CN105337306A - Optical storage integrated power generation system - Google Patents
Optical storage integrated power generation system Download PDFInfo
- Publication number
- CN105337306A CN105337306A CN201510696179.3A CN201510696179A CN105337306A CN 105337306 A CN105337306 A CN 105337306A CN 201510696179 A CN201510696179 A CN 201510696179A CN 105337306 A CN105337306 A CN 105337306A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- storage device
- energy storage
- energy
- generation system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An optical storage integrated power generation system comprises a photovoltaic array, a DC/DC converter, an energy storage device, a DC/AC converter and an energy management system. An input end of the DC/DC converter is connected with the photovoltaic array, an output end of the DC/DC converter is connected with an input end of the DC/AC converter through the energy storage device, an output end of the energy storage device is connected with the input end of the DC/AC converter, and the DC/AC converter is connected with a public connecting point. The DC/AC converter captures electric energy of the photovoltaic array maximally and executes charging management of the energy storage device. The energy storage device stores electric energy of the optical storage integrated power generation system. The DC/AC converter receives electric energy of the DC/DC converter and the energy storage device, and outputs the electric energy to the public connecting point connected with an external public large power grid. The energy management system achieves data exchange of the photovoltaic array, the DC/DC converter, the energy storage device and the DC/AC converter through a communication network, develops operation and dispatching strategies of the optical storage integrated power generation system, and achieves operation management of the optical storage integrated power generation system.
Description
Technical field
The present invention relates to a kind of light storage integrated power generation system, especially light storage micro-capacitance sensor, controllable light storage integrated power generation system.
Background technology
World's conventional energy resource short supply crisis is day by day serious, and a large amount of exploitation of fossil energy have become the one of the main reasons causing natural environment pollution and environment for human survival to worsen, and finding emerging energy has become world's hot issue.In various new forms of energy, solar energy power generating has the advantages such as pollution-free, sustainable, total amount large, distribution wide, application form is various, is subject to the great attention of countries in the world.Along with the ratio of photovoltaic generation access electrical network improves constantly, the intermittence of photovoltaic generation and not confirmability bring a lot of problem to the stability of power system, and light storage integrated power generation system by stored energy and distributing rationally realize indigenous energy produce with can load in a basic balance, strengthen the friendly of photovoltaic generating system.
For photovoltaic parallel in system, by configuring the energy-storage system composition controllable light storage integrated power generation system of certain capacity, photovoltaic generation is made to have the characteristic the same with conventional power generation systems, possesses schedulable ability, reduce the grid-connected impact to bulk power grid, solve the problem that extensive regenerative resource intermittence, fluctuation, uncertainty and power electronics interface bring to electrical network, improve the confidence level of regenerative resource and dissolve in the safety of user side.
For micro-grid system, in line with suiting measures to local conditions, the principle of scientific design, sets up light storage micro-capacitance sensor, can flexibly interactive with public electric wire net as required and relatively independent operation.The micro-capacitance sensor project formed by light storage integrated power generation system can rely on existing distribution network construction, also can in conjunction with newly-built isolated power network construction; Can be single light storage micro-capacitance sensor, that also can be that in a certain region multiple light storage micro-capacitance sensor forms be electrical network group.
In recent years, under the trend of energy and environment problem, photovoltaic generation obtains development at full speed in China, but corresponding problem is also more and more obvious, causes abandoning light problem of rationing the power supply serious.Light storage integrated power generation system can regard the upgrade version of photovoltaic parallel in system as, by EMS by solar energy freely utilizes and the efficiency utilization of conventional energy resource combines, promotion solar energy at high proportion and more efficiently utilization.The stability of photovoltaic generating system at high proportion and the research of light storage micro-grid system are just being become to the discussion focus of academia, but also resting on research and demonstration phase.
National grid establishes wind-light storage transmission demonstration system in Zhangbei County, Hebei province, be intended to solve large-scale photovoltaic or wind-electricity integration problem by concentrated energy-storage system, but effect and effect are also not obvious, still do not solve a grid-connected difficult problem for the extensive regenerative resource in Zhangbei County.Chinese patent CN103337886A proposes a kind of industrial park wind-light storage micro-grid system; main set forth system composition and framework; its framework is mainly based on the topology of pure ac bus; and do not propose the concrete equipping rules of system, control strategy, mode of operation and flow process, be difficult to reproducibility and the large-scale promotion of the system that realizes.
Summary of the invention
Utilize Problems existing for current photovoltaic generation scale, the present invention proposes the light that a kind of ac bus mixes with DC bus and store up integrated power generation system.The present invention is reasonable in design, electricity generation system efficiency is high, can modularization plug and play, be convenient to large-scale promotion.
Technical scheme of the present invention is as follows:
A kind of light storage integrated power generation system, comprising: photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer, and EMS.
Photovoltaic array as energy input interface, for solar energy is converted to electric energy.The input of DC/DC current transformer is connected with photovoltaic array, the output of DC/DC current transformer is connected by the input of energy storage device with DC/AC current transformer, the output of energy storage device is connected with the input of DC/AC current transformer, and DC/AC current transformer is connected with points of common connection.DC/AC current transformer is responsible for the electric energy of capture photovoltaic array to greatest extent simultaneously, performs the Charge Management to energy storage device.The electric energy of energy storage device to light storage integrated power generation system of the present invention stores, thus realizes the decoupling zero of energy input and output; DC/AC current transformer accepts DC/DC current transformer and the two-part electric energy of energy storage device, and export electric energy to public interface, this public interface is the ac output end of light storage integrated power generation system, is connected with the public bulk power grid in outside by this unique port.EMS realizes the data interaction to described photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer by communication network, formulate optimized operation and the scheduling strategy of light of the present invention storage integrated power generation system, realize the operational management to this light storage integrated power generation system.
Described energy storage device can be the various stored energy form such as lithium ion battery, plumbic acid/carbon, liquid stream, and the minimum voltage that energy storage device allows depends on its rear class DC/AC current transformer inverter output voltage value.Light storage integrated power generation system is applicable to grid-connected with micro-capacitance sensor two kinds of application forms, but under two kinds of application scenarios the effect of energy storage device and capacity configuration principle all different, be respectively described below.
When light storage integrated power generation system is applied to grid-connected system, the effect of energy storage device is mainly in order to effectively suppress the not stationarity of photovoltaic generation.Therefore, under light storage integrated power generation system is only operated in grid-connect mode, corresponding control strategy is performed by EMS, make whole photovoltaic generating system controlled at the power at public interface place, smoothly by variable power supply and or the power fluctuation that causes of variable load, stablize electrical network, thus improve photovoltaic generating system penetrance and utilance.In addition energy storage device can also according to electrical network demand, and by idle control for electrical network provides voltage support, this control model can be used for grid-connected waveform optimization, filtering, peak regulation and the adjustment quality of power supply.Consider the principle of economy and reliability, in these situations, the design capacity of energy storage device is unsuitable excessive, take power electronics as interface due to photovoltaic generation unit, maximum photovoltaic power point tracking response speed is within 1 second, and the capacity of energy storage device should be able to minimum support photovoltaic rated capacity 10 minutes.When light of the present invention storage integrated power generation system is applied to micro-grid system, except and except the control method of net state, under independent operating state, energy storage device also will provide continual electric power to support to the local load of micro-capacitance sensor inside.Now the Capacity Selection of energy storage device depends primarily on two factors, and one is the longest interruption duration of micro-grid system; Next is the maximum overcast and rainy days of the local sun.Therefore for interconnection type micro-capacitance sensor, the capacity of energy storage device can be designed to the product of the power of the longest local interruption duration and local load, is 10 minutes ~ 2 hours for general applicable cases energy storage supporting time; For self micro-grid system, the capacity of energy storage device should be able to ensure to power 4 ~ 8 hours to local important load continuously when not having sunlight.
Described DC/DC current transformer adopts BUCK step-down or BOOST booster circuit, can only realize the one-way flow of energy, and multichannel DC/DC circuit in parallel runs and adopts the form of crisscross parallel to realize; Described DC/DC current transformer adopts Digital Control, has maximum photovoltaic power point tracking, charge in batteries management strategy function.
Described DC/AC current transformer adopts H bridge or three-phase half-bridge circuit, connects Δ/Y isolation boosting transformer access common connecting point, can realize the two-way flow of energy after LC low-pass filtering; Described DC/AC current transformer employing Digital Control can be independent, grid-connected according to the Determines of common connecting point or take over seamlessly operation, is that inversion or rectification run according to the Determines of energy storage device.
Described common connecting point place accesses public electric wire net, other electricity generation systems or independently load by switch.For micro-grid system, switching requirements is herein rapid combination switch, and on off state carries out communication by the form of I/O port passive node and DC/AC current transformer.
The charging of described energy storage device also can be realized by DC/AC current transformer by DC/DC current transformer, and this depends primarily on the light storage running status of integrated power generation system and the dispatch command of EMS; Light storage integral system preferentially adopts DC/DC current transformer execution MPPT maximum power point tracking algorithm to charge to energy storage device; Under independent operating state, under guaranteed load electric power thus supplied, charge to energy storage device to greatest extent; Under the state of being incorporated into the power networks, perform MPPT maximum power point tracking algorithm always, charge to energy storage device according to optimum charging strategy, and unnecessary energy is defeated by DC/AC current transformer.Under the state that is incorporated into the power networks, DC/AC current transformer can according to the dispatch command of EMS to energy storage device realize timing all fill/all put charge and discharge control strategy.
Not only connect each other but also independent of one another between the photovoltaic array of light of the present invention storage integrated power generation system, DC/DC current transformer, energy storage device, DC/AC current transformer and EMS each several part.Described light storage integrated power generation system, when communication is normal, formulates optimum operation and scheduling strategy by EMS; When there is communication failure, the equipment such as DC/DC current transformer and DC/AC current transformer still can by respective control system stable operation.Concrete control method is as follows:
EMS is the core that light of the present invention storage integrated power generation system running optimizatin and management control, collected and the service data information of analyzing and processing photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer and common connecting point by RS485 communication network, formulate optimum operation and scheduling strategy, and issue control command to corresponding DC/DC current transformer and DC/AC current transformer by RS485 communication network.
EMS is by the detection analysis to common connecting point place voltage and frequency information, judge that whether the electrical network at public interface place is normal, judge that light storage integrated power generation system is in independent operating and is still incorporated into the power networks according to electric network state, if electrical network is normal, operate in and net state; Otherwise, operate in separate state.
Then, EMS formulates corresponding scheduling strategy according to operational mode.Under independent operation mode, EMS, according to the photovoltaic array in light storage integrated power generation system and the power dynamic equilibrium principle between energy storage device, formulates the optimum charging control strategy to DC/DC current transformer; DC/AC current transformer realizes voltage/frequency networking on the one hand and controls, and on the other hand by judging the alternating voltage at public interface place and the detection of frequency, realizes controlling the voltage stabilizing of energy storage device voltage.
Under the pattern of being incorporated into the power networks, DC/DC current transformer performs maximum photovoltaic power point track algorithm all the time, charges to energy storage device according to optimum charging strategy, and by unnecessary Energy transfer to DC/AC current transformer.For different application scenarios, EMS makes different optimized operation strategies, when needing the stable output ensureing photovoltaic array, when ensureing that photovoltaic array energy is connected to the grid to greatest extent, DC/AC current transformer performs the scheduling strategy to common connecting point place constant power output; When needs realize activating optimal control to energy storage device, DC/AC current transformer, by the power dispatching instruction of EMS, performs all filling or all putting energy storage device; When needing the quality of power supply ensureing common connecting point place, DC/AC current transformer performs corresponding electrical network friendly control strategy, makes the quality of power supply of also site reach the requirement of setting; When needs realize peak load shifting by energy storage device, DC/AC current transformer is according to the meritorious and idle output accordingly of transfer strategy execution.
When communication failure, described DC/AC current transformer mainly performs the energy conversion function based on power electronic equipment, common connecting point place needs installation and measuring unit to detect the electric network state outside switch, when detecting that electrical network is abnormal, detecting unit can send instruction cut-off switch, by I/O port passive node, electric network state is passed to DC/AC current transformer, DC/AC current transformer performs by grid-connected to independently switching; Otherwise, when detecting that power system restoration is normal, detecting unit can control to wait for the consistent rear Closing Switch of the voltage-phase of switch both sides according to beat frequency, by I/O port passive node, electric network state is passed to DC/AC current transformer, the voltage given value of independent operating is set to grid voltage amplitude and performs by independently to grid-connected switching by DC/AC current transformer.
Light storage integrated power generation system of the present invention can carry out flexible configuration to photovoltaic generation in system and capacity of energy storing device, control electricity generation system to work under various modes, thus the operational mode of whole electricity generation system can be controlled neatly according to the situation of grid condition, environmental aspect and electricity generation system itself, realize the operation of more efficient Simultaneous Stabilization.
Accompanying drawing explanation
The composition of Fig. 1 light storage integrated power generation unit;
Fig. 2 light storage micro-capacitance sensor typical apply system;
Fig. 3 EMS control strategy flow chart;
Fig. 4 micro-capacitance sensor operational mode decision flow chart;
The operational mode block diagram of Fig. 5 DC/AC current transformer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, light storage integrated power generation system of the present invention mainly comprises: photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer, and EMS.
Photovoltaic array as energy input interface, for solar energy is converted to electric energy.The input of DC/DC current transformer is connected with photovoltaic array, and the output energy storage device of DC/DC current transformer is connected with the input of DC/AC current transformer, and the output of energy storage device is connected with the input of DC/AC current transformer, and DC/AC current transformer points of common connection connects.DC/DC current transformer is responsible for the electric energy of capture photovoltaic array to greatest extent simultaneously, performs the Charge Management to energy storage device.Energy storage device stores the electric energy in light storage integrated power generation system of the present invention, thus realizes the decoupling zero of energy input and output.DC/AC current transformer accepts DC/DC current transformer and the two-part electric energy of energy storage device, and exports electric energy to public interface.This public interface is the ac output end of light storage integrated power generation system, is connected with the public bulk power grid in outside by this unique port.EMS realizes the data interaction to photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer by communication network, formulates optimized operation and the scheduling strategy of system, realizes the operational management to this light storage integrated power generation system.
Fig. 2 is according to the typical apply case of light storage one electricity generation system of the present invention in micro-capacitance sensor.As shown in Figure 2, the part of whole micro-capacitance sensor mainly comprises: light storage integrated power generation system, n group pure parallel network power generation branch road and local load three parts.Wherein said light storage integrated power generation system is as networking unit during micro-grid system independent operating; The pure parallel network power generation branch road of n group as and net unit, the photovoltaic array of each branch road is incorporated to public interface by photovoltaic combining inverter with current source mode.Whole micro-capacitance sensor accesses public bulk power grid by unique common connecting point, and is separated with bulk power grid by local load by grid-connected switch.When bulk power grid is normal, grid-connected switch closes, and light storage one electricity generation system is incorporated into the power networks; Work as electric network fault, grid-connected switch disconnects, and light storage one electricity generation system independent operating, powers to local load by micro-capacitance sensor.
Fig. 3 is EMS control strategy flow chart.EMS is usually completed by home server outfit peripheral interface units and excavates processing capacity to the backstage of data acquisition and data that whole light stores up integrated power generation system; according to the data message collected through logical algorithm, by local performance element realization to functions such as the power dispatching of equipment and Control protection.
Fig. 4 is the flow chart that micro-capacitance sensor operational mode judges, micro-capacitance sensor is mainly divided into following four kinds of running statuses:
A) be incorporated into the power networks: when light storage one electricity generation system of the present invention is incorporated into the power networks, DC/AC current transformer is in the state of being incorporated into the power networks, according to the state-of-charge of energy storage device storage battery, EMS judges that DC/AC current transformer is the need of charging to storage battery and charging in which way; For not needing the grid-connected branch road accepting power dispatching, photovoltaic combining inverter wherein generates electricity with maximum power, to needing the grid-connected branch road accepting power dispatching instruction, dispatch command sends to photovoltaic combining inverter to control generated output according to instruction by EMS.
B) switched to independent operation mode by the pattern of being incorporated into the power networks: and if net state under EMS electrical breakdown or electric network fault detected, then control grid-connected switch to disconnect, DC/AC current transformer automatically switches to independent operation mode simultaneously, starts set up system voltage with voltage source form; Photovoltaic combining inverter is shut down because of dead electricity, and EMS is after DC/AC current transformer has started, and control photovoltaic combining inverter and restart, micro-capacitance sensor enters independent operation mode.
C) independent operation mode: during micro-capacitance sensor independent operating, the management principle of EMS is the dynamic equilibrium being maintained microgrid power by the management of power supply and load, ensures the stable of busbar voltage and frequency.Now DC/AC current transformer voltage source runs, and exports three-phase alternating voltage networking, photovoltaic combining inverter parallel running.Now EMS is according to the generated output size of payload and photovoltaic array, needs to manage photovoltaic array and load.
In this case light storage one electricity generation system of the present invention is divided into two kinds of operational modes, one is the power output that load power is greater than photovoltaic array, now respectively organize photovoltaic combining inverter to generate electricity with maximum power, DC/AC current transformer supplements the power demand of load remainder, energy storage device release electric energy, the state of EMS Real-Time Monitoring energy storage device, when energy storage device discharges into cut-ff voltage, EMS starts load management, namely according to actual conditions, different load is classified, the power supply of preferential important sensitive load, first insignificant load is excised until energy storage device stops electric discharge, two is the power that the power of load consumption is less than the output of photovoltaic array, now DC/AC current transformer can charge to energy storage device, equally, EMS detects energy storage device state in real time, after energy storage device electricity is full of, the power stage of EMS restriction photovoltaic combining inverter, to the grid-connected branch road that can accept to dispatch, the output that this photovoltaic sends out branch road is controlled according to payload, to the photovoltaic generation branch road that can not accept to dispatch, EMS is by controlling its start or the control realized generated output of shutting down.For by the electricity generation system organized photovoltaic combining inverter more and form, for starting the impact to busbar voltage while reducing many group photovoltaic combining inverters, need according to actual conditions, as the control performance, quantity, power grade etc. of photovoltaic combining inverter, substep is carried out to it and controls.
D) independent operation mode switches to the pattern that is incorporated into the power networks: after under independent operating state, EMS detects that line voltage is normal, first the DC/AC current transformer operational mode of light storage one electricity generation system of the present invention is switched to and be incorporated into the power networks, DC/AC current transformer adjusts the voltage synchronous of output voltage and bulk power grid automatically, then EMS closes grid-connected switch, all devices is incorporated into the power networks, and micro-capacitance sensor enters the pattern of being incorporated into the power networks.
Fig. 5 is the operational mode block diagram of DC/AC current transformer, and the present invention adopts and double modely takes over seamlessly control method.DC/AC current transformer at networking unit and and need switch between net unit.When micro-capacitance sensor runs on independent operation mode, DC/AC current transformer runs with networking mode; When micro-capacitance sensor runs on grid-connect mode, DC/AC current transformer runs with synchronizing mode.The double mode control objectives taking over seamlessly technology to ensure DC/AC current transformer taking over seamlessly under two kinds of different operating modes.According to the definition of micro-capacitance sensor, this process can be regarded as the cooperation control process between mode switch and grid-connected switch.Mode switch belongs to logic switch, is used for switching the working method of current transformer; Grid-connected switch is only the switch in real physical meaning, is used for opening or turning off the connection with bulk power grid.
Claims (7)
1. a light storage integrated power generation system, is characterized in that, described light storage integrated power generation system comprises photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer, and EMS; The input of DC/DC current transformer is connected with photovoltaic array, the output of DC/DC current transformer is connected by the input of energy storage device with DC/AC current transformer, the output of energy storage device is connected with the input of DC/AC current transformer, and DC/AC current transformer is connected with points of common connection; DC/AC current transformer is responsible for the electric energy of capture photovoltaic array to greatest extent simultaneously, performs the Charge Management to energy storage device; The electric energy of energy storage device to described light storage integrated power generation system stores; DC/AC current transformer accepts DC/DC current transformer and the two-part electric energy of energy storage device, and exports electric energy to public interface, and this public interface connects with the public bulk power grid in outside; EMS realizes the data interaction to described photovoltaic array, DC/DC current transformer, energy storage device, DC/AC current transformer by communication network, formulate operation and the scheduling strategy of described light storage integrated power generation system, realize the operational management to this light storage integrated power generation system.
2. light storage integrated power generation system according to claim 1, it is characterized in that, described DC/DC current transformer adopts BUCK step-down or BOOST booster circuit, can only realize the one-way flow of energy.
3. light storage integrated power generation system according to claim 1, it is characterized in that, the minimum voltage that described energy storage device allows depends on its rear class DC/AC current transformer inverter output voltage value; For self micro-grid system, the capacity of energy storage device should be able to ensure to power 4 ~ 8 hours to local important load continuously when not having sunlight; For interconnection type micro-grid system, the capacity of energy storage device should be able to minimum support photovoltaic rated capacity 10 minutes.
4. light storage integrated power generation system according to claim 1, it is characterized in that, described DC/AC current transformer adopts H bridge or three-phase half-bridge circuit, connects Δ/Y isolation boosting transformer access common connecting point, can realize the two-way flow of energy after LC low-pass filtering.
5. light storage integrated power generation system according to claim 1, it is characterized in that, described common connecting point accesses public electric wire net by switch, and on off state passes through form and the communication of DC/AC current transformer of I/O port passive node.
6. light storage integrated power generation system according to claim 1, it is characterized in that, described EMS is by the detection analysis to common connecting point place voltage and frequency information, judge that whether the electrical network at public interface place is normal, judge that described light storage integrated power generation system is in independent operating and is still incorporated into the power networks according to electric network state, if electrical network is normal, operate in and net state; Otherwise, operate in separate state; Under independent operation mode, EMS formulates the optimum charging control strategy to DC/DC current transformer according to the photovoltaic array in described light storage integrated power generation system and the power dynamic equilibrium principle between energy storage device; DC/AC current transformer realizes voltage/frequency networking on the one hand and controls, and on the other hand by judging the alternating voltage at public interface place and the detection of frequency, realizes controlling the voltage stabilizing of energy storage device voltage.
7. light storage integrated power generation system according to claim 6, it is characterized in that, under the pattern of being incorporated into the power networks, described DC/DC current transformer performs maximum photovoltaic power point track algorithm, charge to energy storage device according to optimum charging strategy, and by unnecessary Energy transfer to DC/AC current transformer; For different application scenarios, EMS makes different operation reserve: when needing the stable output ensureing photovoltaic array, ensure that photovoltaic array energy is connected to the grid to greatest extent, DC/AC current transformer performs the scheduling strategy to common connecting point place constant power output; When needs realize energy storage device active control, DC/AC current transformer, by the power dispatching instruction of EMS, performs all filling or all putting energy storage device; When needing the quality of power supply ensureing common connecting point place, DC/AC current transformer performs corresponding electrical network friendly control strategy, makes the quality of power supply of also site reach the requirement of setting; When needs realize peak load shifting by energy storage device, DC/AC current transformer is according to the meritorious and idle output accordingly of transfer strategy execution;
When communication failure, described DC/AC current transformer mainly performs the energy conversion function based on power electronic equipment, the detecting unit that common connecting point place installs detects the electric network state outside switch, when detecting that electrical network is abnormal, send instruction cut-off switch, by I/O port passive node by state transfer to DC/AC current transformer, perform by grid-connected to independently switching; When detecting that power system restoration is normal, Closing Switch after detecting unit is consistent according to the voltage-phase of beat frequency control switch both sides, by I/O port passive node by state transfer to DC/AC current transformer, the voltage given value of independent operating be set to grid voltage amplitude and perform by independently to grid-connected switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510696179.3A CN105337306A (en) | 2015-10-23 | 2015-10-23 | Optical storage integrated power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510696179.3A CN105337306A (en) | 2015-10-23 | 2015-10-23 | Optical storage integrated power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105337306A true CN105337306A (en) | 2016-02-17 |
Family
ID=55287677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510696179.3A Pending CN105337306A (en) | 2015-10-23 | 2015-10-23 | Optical storage integrated power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105337306A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374517A (en) * | 2016-11-15 | 2017-02-01 | 湖南省德沃普储能有限公司 | Battery energy storage system for alleviating problem of photovoltaic power generation abandoning and limiting and control method therefor |
| CN106451513A (en) * | 2016-12-08 | 2017-02-22 | 北京索英电气技术有限公司 | Mixed UPS (uninterrupted power supply) energy storage system and method thereof |
| CN106712102A (en) * | 2017-03-09 | 2017-05-24 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning power limit of photovoltaic power station |
| CN106786701A (en) * | 2017-01-17 | 2017-05-31 | 无锡协鑫分布式能源开发有限公司 | The integrated micro-grid system control strategy of demand sidelight storage |
| CN106961116A (en) * | 2017-01-17 | 2017-07-18 | 无锡协鑫分布式能源开发有限公司 | The integrated micro-grid system of demand sidelight storage |
| CN107528344A (en) * | 2017-09-27 | 2017-12-29 | 中国电力科学研究院 | A kind of light storage integrated generating device is incorporated into the power networks control method and system |
| WO2020077786A1 (en) * | 2018-10-17 | 2020-04-23 | 珠海格力电器股份有限公司 | Energy control method and device, energy management system, and storage medium |
| CN111384752A (en) * | 2020-03-16 | 2020-07-07 | 深圳供电局有限公司 | Power distribution device, power distribution system and power distribution method |
| CN111971869A (en) * | 2018-03-16 | 2020-11-20 | 道达尔太阳能国际公司 | System, device and method for off-grid microgrid management |
| CN113097387A (en) * | 2021-04-02 | 2021-07-09 | 西安电子科技大学 | Anti-irradiation photovoltaic energy storage integrated device and preparation method thereof |
| CN115967154A (en) * | 2023-02-01 | 2023-04-14 | 深圳市恩玖科技有限公司 | Energy storage power supply system and control method based on energy storage power supply system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223679A1 (en) * | 2009-11-25 | 2012-09-06 | Ryo Iwai | Power conversion device, power generation system and charge and discharge control method |
-
2015
- 2015-10-23 CN CN201510696179.3A patent/CN105337306A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223679A1 (en) * | 2009-11-25 | 2012-09-06 | Ryo Iwai | Power conversion device, power generation system and charge and discharge control method |
Non-Patent Citations (1)
| Title |
|---|
| 伍春生: ""光伏混合微电网中模块化组网控制技术研究"", 《NSTL国家科技图书文献中心》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374517A (en) * | 2016-11-15 | 2017-02-01 | 湖南省德沃普储能有限公司 | Battery energy storage system for alleviating problem of photovoltaic power generation abandoning and limiting and control method therefor |
| CN106374517B (en) * | 2016-11-15 | 2019-02-26 | 湖南德沃普新能源有限公司 | A kind of battery energy storage system control method for reducing photovoltaic plant abandoning light and rationing the power supply |
| CN106451513A (en) * | 2016-12-08 | 2017-02-22 | 北京索英电气技术有限公司 | Mixed UPS (uninterrupted power supply) energy storage system and method thereof |
| CN106786701A (en) * | 2017-01-17 | 2017-05-31 | 无锡协鑫分布式能源开发有限公司 | The integrated micro-grid system control strategy of demand sidelight storage |
| CN106961116A (en) * | 2017-01-17 | 2017-07-18 | 无锡协鑫分布式能源开发有限公司 | The integrated micro-grid system of demand sidelight storage |
| CN106712102A (en) * | 2017-03-09 | 2017-05-24 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning power limit of photovoltaic power station |
| CN106712102B (en) * | 2017-03-09 | 2020-04-07 | 四川科陆新能电气有限公司 | Control system and method for reducing light abandoning and electricity limiting of photovoltaic power station |
| CN107528344A (en) * | 2017-09-27 | 2017-12-29 | 中国电力科学研究院 | A kind of light storage integrated generating device is incorporated into the power networks control method and system |
| CN111971869A (en) * | 2018-03-16 | 2020-11-20 | 道达尔太阳能国际公司 | System, device and method for off-grid microgrid management |
| WO2020077786A1 (en) * | 2018-10-17 | 2020-04-23 | 珠海格力电器股份有限公司 | Energy control method and device, energy management system, and storage medium |
| CN111384752A (en) * | 2020-03-16 | 2020-07-07 | 深圳供电局有限公司 | Power distribution device, power distribution system and power distribution method |
| CN113097387A (en) * | 2021-04-02 | 2021-07-09 | 西安电子科技大学 | Anti-irradiation photovoltaic energy storage integrated device and preparation method thereof |
| CN115967154A (en) * | 2023-02-01 | 2023-04-14 | 深圳市恩玖科技有限公司 | Energy storage power supply system and control method based on energy storage power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105337306A (en) | Optical storage integrated power generation system | |
| CN102931653B (en) | Comprehensive coordination control method of wind-solar direct current micro-grid | |
| CN107947221B (en) | Power electronic transformer direct-current fault ride-through method | |
| CN204243874U (en) | A kind of data center high-voltage direct current (DC) power system | |
| CN105743127A (en) | Household new energy power generation intelligent control system and control method | |
| CN102916486B (en) | Intelligent micro-grid diesel-storage coordination control method | |
| Jia et al. | Architecture design for new AC-DC hybrid micro-grid | |
| CN104022527B (en) | Direct current micro-grid system | |
| CN103532214A (en) | Photovoltaic power generation system structure integrating energy storage and grid-connected and off-grid power supply functions and control method | |
| CN104518563A (en) | Electromobile charging system based on new energy application and control method thereof | |
| CN108123497B (en) | Power distribution cabinet for AC/DC hybrid power supply and AC/DC hybrid power supply system | |
| CN105811453A (en) | Distributed energy intelligent access system and access method thereof | |
| CN110417052B (en) | AC/DC hybrid microgrid group series-parallel networking structure, control system and operation control method | |
| CN110912242A (en) | Large-disturbance transient stability coordination control method for DC micro-grid containing hybrid energy storage | |
| CN110289621A (en) | A kind of alternating current-direct current electric energy router of the access containing distributed generation resource | |
| CN209913508U (en) | Micro-grid layered coordination control device | |
| CN203951202U (en) | Micro-mains supply system for a kind of wind light mutual complementing family | |
| CN104333036A (en) | Multi-source coordination control system | |
| CN205407292U (en) | Distributing type energy intelligence access system | |
| WO2019075879A1 (en) | Running mode conversion method for alternating-current/direct-current hybrid microgrid | |
| CN112769161A (en) | Multi-mode energy storage micro-grid system | |
| CN204858718U (en) | Hierarchical supply control device of microgrid load | |
| CN205489571U (en) | Little grid system of high reliability based on centralized ring bus structure | |
| CN108599255A (en) | A kind of micro-grid coordination control method considering electric-gas interconnection | |
| CN103606965B (en) | A kind of networking control method based on the quasi real time energy storage inverter of synchronizing signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |