CN218276088U - Diesel generator heavy load start microgrid system and device - Google Patents
Diesel generator heavy load start microgrid system and device Download PDFInfo
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- CN218276088U CN218276088U CN202122351545.5U CN202122351545U CN218276088U CN 218276088 U CN218276088 U CN 218276088U CN 202122351545 U CN202122351545 U CN 202122351545U CN 218276088 U CN218276088 U CN 218276088U
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Abstract
The utility model relates to a circuit design technical field, concretely relates to diesel generator heavy load starts microgrid system and device, this system includes: photovoltaic power generation system, battery energy storage system, energy storage inverter system and diesel generator system. By adopting the circuit of the embodiment, the normal work of the load is ensured by matching and mutually switching power supply between the photovoltaic power generation system and the diesel generator system; and the output of the energy storage system is matched in the switching process, so that the output of the diesel engine system and the output of the photovoltaic power generation system are smoothly switched, and the technical problem of heavy-load starting of the diesel engine is solved.
Description
Technical Field
The utility model relates to a circuit design technical field, concretely relates to diesel generator heavy load starts microgrid system and device.
Background
Nowadays, the demand for electric power is increasing due to rapid development of economy of various countries in the world, but the construction of national electric power systems is not perfect due to various reasons in part of countries, and the national electric power systems in part of regions cannot meet the production and living requirements of the countries, so that the countries need to establish own micro-grid systems to provide stable energy.
SUMMERY OF THE UTILITY MODEL
The application provides a diesel generator heavy load starts microgrid system and device, its aim at solves the problem that the diesel generator heavy load starts for diesel generator can smooth start.
A diesel generator heavy load start microgrid system comprises: the system comprises a photovoltaic power generation system, a battery energy storage system, an energy storage inverter system and a diesel generator system;
the photovoltaic power generation system is electrically connected with the energy storage inversion system, the battery energy storage system, the energy storage inverter system and the diesel generator system, and is used for providing direct current for a load through photovoltaic power generation; the output end of the diesel generator system is connected with the energy storage inverter system and the battery energy storage system, and the diesel generator system is used for generating electricity through diesel to provide direct current for a load; the battery energy storage system is used for storing redundant electric energy of the photovoltaic power generation system and the diesel generator system; the energy storage inverter system is used for converting direct current provided by the photovoltaic power generation system and the diesel generator system into adaptive alternating current and supplying the adaptive alternating current to a load.
In one embodiment, the photovoltaic power generation system comprises a photovoltaic panel and a DC/DC converter, wherein an output end of the photovoltaic panel is connected with an input end of the DC/DC converter, the photovoltaic panel is used for converting light energy into electric energy, and the DC/DC converter is used for converting voltage output by the photovoltaic panel.
In one embodiment, the diesel generator system comprises a diesel generator and an AC/DC converter, wherein the output end of the diesel generator is connected with the AC/DC converter, and the AC/DC converter is used for converting the alternating current output by the diesel generator into direct current.
In one embodiment, the battery energy storage system comprises a lithium battery and a battery management system, wherein the battery management system is connected with the output ends of the DC/DC converter and the AC/DC converter; the lithium battery is used for storing electric energy, and the battery management system is used for controlling and managing input and output currents of the lithium battery.
A diesel generator heavy load starting device comprises the diesel generator heavy load starting microgrid system.
According to the diesel generator heavy load start microgrid system of above-mentioned embodiment, it includes: photovoltaic power generation system, battery energy storage system, energy storage inverter system and diesel generator system. The photovoltaic power generation system is electrically connected with the energy storage inversion system, the battery energy storage system, the energy storage inverter system and the diesel generator system, and is used for providing direct current for a load through photovoltaic power generation; the output end of the diesel generator system is connected with the energy storage inverter system and the battery energy storage system, and the diesel generator system is used for generating electricity through diesel to provide direct current for a load; the battery energy storage system is used for storing redundant electric energy of the photovoltaic power generation system and the diesel generator system; the energy storage inverter system is used for converting direct current provided by the photovoltaic power generation system and the diesel generator system into adaptive alternating current and supplying the adaptive alternating current to a load. By adopting the circuit of the embodiment, the normal work of the load is ensured by matching and mutually switching power supply between the photovoltaic power generation system and the diesel generator system; and the output of the energy storage system is matched in the switching process, so that the output of the diesel engine system and the output of the photovoltaic power generation system are smoothly switched, and the technical problem of heavy-load starting of the diesel engine is solved.
Drawings
FIG. 1 is a schematic diagram of the overall system structure according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a system according to an embodiment of the present disclosure;
FIG. 3 is a flow diagram of a system of an embodiment of the present application in one mode of operation;
fig. 4 is a flow chart of the system of the embodiment of the present application in another operating mode.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the described features, operations, or characteristics may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The first embodiment is as follows:
referring to fig. 1, the present embodiment provides a diesel generator heavy load start microgrid system, which includes: photovoltaic power generation system, battery energy storage system, energy storage inverter system and diesel generator system. The photovoltaic power generation system is electrically connected with the energy storage inversion system, the battery energy storage system, the energy storage inverter system and the diesel generator system and is used for providing direct current for a load through photovoltaic power generation; the output end of the diesel generator system is connected with the energy storage inverter system and the battery energy storage system, and the diesel generator system is used for generating electricity through diesel to provide direct current for a load; the battery energy storage system is used for storing redundant electric energy of the photovoltaic power generation system and the diesel generator system; the energy storage inverter system is used for converting direct current provided by the photovoltaic power generation system and the diesel generator system into adaptive alternating current and supplying the adaptive alternating current to a load.
Specifically, as shown in fig. 2, the photovoltaic power generation system of the present embodiment includes a photovoltaic panel and a DC/DC converter, an output end of the photovoltaic panel is connected to an input end of the DC/DC converter, the photovoltaic panel is configured to convert light energy into electric energy, and the DC/DC converter is configured to convert a voltage output by the photovoltaic panel.
The diesel generator system of the embodiment comprises a diesel generator and an AC/DC converter, wherein an output end of the diesel generator is connected with the AC/DC converter, and the AC/DC converter is used for converting alternating current output by the diesel generator into direct current.
The battery energy storage system of the embodiment comprises a lithium battery and a battery management system, wherein the battery management system BMS is connected with the output ends of a DC/DC converter and an AC/DC converter; the lithium battery is used for storing electric energy, and the battery management system is used for controlling and managing input and output currents of the lithium battery.
Referring to fig. 3, when the system of this embodiment works in a mode in which the photovoltaic power generation system works to supply power to a load, the load supply mode of the photovoltaic power generation system is generally in a stage in which the photovoltaic energy and the energy of the energy storage battery are sufficient, in this stage, the energy storage inverter system detects the load power and the required battery charging power, and sends the total required power to the DC/DC converter in the photovoltaic power generation system in real time, and the photovoltaic power generation system performs maximum output according to the required power. When the output power of the photovoltaic power generation system is larger than the load power, redundant photovoltaic energy is stored in the storage battery. When the photovoltaic power is less than the load power, the lithium battery discharges to supplement the insufficient part. When the output energy of the photovoltaic power generation system and the lithium battery is insufficient to support the load power, the energy storage inverter system sends a starting signal to the diesel generator system and sends the required power to the generator system in a step increasing mode (after the output power of the diesel engine is detected to reach a target value, the target value is increased, so that the output power of the diesel generator is finally equal to the load power). The AC/DC converter of the diesel generator system responds to a power demand instruction of the energy storage inverter system in real time so as to achieve the purpose that the load power is smoothly transited to be driven by the diesel generator.
Referring to fig. 4, when the output energy of the photovoltaic power generation system and the lithium battery is insufficient to support the load power, all the load power is provided by the diesel generator during this time period. It is also contemplated to use a diesel generator to supplement the lithium battery. And when the energy of the photovoltaic power generation system is enough, the energy storage inverter system sends an oil turning-off machine instruction. The AC/DC converter of the diesel generator system steps down the power output of the diesel generator in response to the command. When the power of the diesel generator is reduced, the light storage system gradually increases the output to supplement the power reduction part of the diesel generator. And the diesel generator is shut down until the output power of the diesel generator is very small. At the moment, the photovoltaic power generation system outputs energy to drive a load, so that the diesel generator outputs low power until the diesel generator stops.
In the embodiment, in the time period when the energy of the photovoltaic power generation system and the energy storage system of the battery is sufficient, the electric energy transmitted by the photovoltaic power generation system is preferentially utilized to drive the load, the redundant photovoltaic energy is stored in the battery, and when the output energy of the photovoltaic power generation system is insufficient to provide the load, the battery discharges to drive the load. And starting the diesel generator system in the period of insufficient energy of the photovoltaic power generation system and the energy storage system, gradually increasing the conversion power through the AC/DC converter until the output power of the diesel generator is equal to the load power, and continuously supplementing the part with insufficient load by the photovoltaic power generation system and the battery energy storage system in the power-up stage of the diesel generator. When the output energy of the photovoltaic power generation system and the battery energy storage system can drive a load, the energy storage inverter system sends a control instruction to gradually reduce the AC/DC output power, so that the output power of the diesel generator is gradually reduced, heavy-load shutdown of the oil engine is avoided, and smooth switching of the diesel engine system, the photovoltaic power generation system and the battery energy storage system is finally realized when the diesel engine system works with the load. The system that this embodiment provided has pollution abatement, solves diesel engine heavy load start-up problem, full automatic operation's advantage. The output power of the diesel engine is effectively smoothed, and the problems of heavy-load starting and shutdown of the oil extraction machine are well solved.
Example two:
the embodiment provides a heavy-load starting device for a diesel generator, which includes the diesel generator heavy-load starting microgrid system provided in the first embodiment.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (5)
1. The utility model provides a diesel generator heavy load starts microgrid system which characterized in that includes: the system comprises a photovoltaic power generation system, a battery energy storage system, an energy storage inverter system and a diesel generator system;
the photovoltaic power generation system is electrically connected with the energy storage inversion system, the battery energy storage system, the energy storage inverter system and the diesel generator system, and is used for providing direct current for a load through photovoltaic power generation; the output end of the diesel generator system is connected with the energy storage inverter system and the battery energy storage system, and the diesel generator system is used for generating electricity through diesel to provide direct current for a load; the battery energy storage system is used for storing redundant electric energy of the photovoltaic power generation system and the diesel generator system; the energy storage inverter system is used for converting direct current provided by the photovoltaic power generation system and the diesel generator system into adaptive alternating current and supplying the adaptive alternating current to a load.
2. The diesel generator heavy load start microgrid system according to claim 1, characterized in that the photovoltaic power generation system comprises a photovoltaic panel and a DC/DC converter, an output end of the photovoltaic panel is connected with an input end of the DC/DC converter, the photovoltaic panel is used for converting light energy into electric energy, and the DC/DC converter is used for converting voltage output by the photovoltaic panel.
3. The diesel generator heavy load start microgrid system of claim 2, wherein the diesel generator system comprises a diesel generator and an AC/DC converter, an output end of the diesel generator is connected with the AC/DC converter, and the AC/DC converter is used for converting alternating current output by the diesel generator into direct current.
4. The diesel generator heavy load start microgrid system of claim 3, wherein the battery energy storage system comprises a lithium battery and a battery management system, and the battery management system is connected with the output ends of the DC/DC converter and the AC/DC converter; the lithium battery is used for storing electric energy, and the battery management system is used for controlling and managing input and output currents of the lithium battery.
5. A diesel generator heavy load starting device, characterized by comprising the diesel generator heavy load starting microgrid system defined in any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351545.5U CN218276088U (en) | 2021-09-27 | 2021-09-27 | Diesel generator heavy load start microgrid system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351545.5U CN218276088U (en) | 2021-09-27 | 2021-09-27 | Diesel generator heavy load start microgrid system and device |
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| Publication Number | Publication Date |
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| CN218276088U true CN218276088U (en) | 2023-01-10 |
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| CN202122351545.5U Active CN218276088U (en) | 2021-09-27 | 2021-09-27 | Diesel generator heavy load start microgrid system and device |
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2021
- 2021-09-27 CN CN202122351545.5U patent/CN218276088U/en active Active
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