CN111162530B - Power access system for generator outlet to access peak shaving facility - Google Patents
Power access system for generator outlet to access peak shaving facility Download PDFInfo
- Publication number
- CN111162530B CN111162530B CN202010039068.6A CN202010039068A CN111162530B CN 111162530 B CN111162530 B CN 111162530B CN 202010039068 A CN202010039068 A CN 202010039068A CN 111162530 B CN111162530 B CN 111162530B
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- voltage
- peak shaving
- facility
- peak
- transformer
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- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000004146 energy storage Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000008235 industrial water Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The application discloses a power access system for an outlet of a generator to access a peak shaving facility, which comprises a 220kV high-voltage bus and a generator electrically connected with the 220kV high-voltage bus through a main transformer; the generator controls the on-off of the 220kV high-voltage bus through a circuit breaker; the system further comprises: the peak regulation facility transformer is connected with the main transformer through a common box sealing mother; and peak shaving facilities connected with the peak shaving facility transformer; the system of the application seals the peak-shaving transformer and the outlet of the peak-shaving facility generator, and can disconnect the switch in the non-peak-shaving time period to avoid the no-load loss of the peak-shaving transformer; the system is reliable, and the peak shaving facility fault can be disconnected through the GCB, so that the safe operation of the generator set is not affected.
Description
Technical Field
The application relates to the technical field of power systems, in particular to a power access system for a generator outlet to access peak shaving facilities.
Background
At present, new energy power generation in China rapidly develops, and coal power capacity is excessive. When the proportion of the new energy in the power grid is gradually enlarged, the demand for peak regulation power supply is gradually increased, and compared with the power supplies such as the new energy, the coal power has better peak regulation performance. For countries with coal as the primary energy source, highly regulated coal power plants are the most realistic viable option.
Because the coal motor unit bears the functions of deep peak shaving, standby and the like of high-speed growing non-fossil energy power generation, the thermal power unit, particularly the coal motor unit, continuously runs under low load or deep peak shaving in the next years becomes normal. The switch stations of most of the domestic active coal motor units are not reserved with spare intervals, and meanwhile, the switch stations are not provided with enough spaces to expand new intervals, so that the electric energy storage and electric heat storage peak regulation facilities cannot be additionally arranged in the power plant.
Disclosure of Invention
The application aims to provide a power access system which is simple in system, flexible in operation and capable of independently operating in units, and an outlet of a generator is connected to a peak shaving facility.
In order to achieve the above object, the present application provides the following technical solutions:
the application relates to a power access system for a generator outlet to access a peak shaving facility, which mainly comprises:
220kV high-voltage bus;
a generator electrically connected with the 220kV high-voltage bus through a main transformer;
the generator controls the on-off of the 220kV high-voltage bus through a circuit breaker;
the system further comprises:
the peak regulation facility transformer is connected with the main transformer through a common box sealing mother; and
peak shaving facilities connected with the peak shaving facility transformer;
a breaker is arranged between the peak shaving facility transformer and the peak shaving facility to control the communication state;
the peak shaving facility is connected with an electric boiler peak shaving system.
Further, the 220kV high-voltage bus is connected with two groups of generators, namely a first unit generator and a second unit generator;
the main transformer connected with the first unit generator is a first unit main transformer;
the main transformer connected with the second unit generator is a second unit main transformer;
the common box sealing busbar is connected with the first unit transformer, the other end of the common box sealing busbar is connected with a first unit GCB switch, and the first unit GCB switch is connected with a first peak shaving facility through a first peak shaving facility transformer and is controlled to be on-off through a circuit breaker;
the common box sealing busbar is connected with the second unit transformer, the other end of the common box sealing busbar is connected with a second unit GCB switch, and the second unit GCB switch is connected with a second peak shaving facility through a second peak shaving facility transformer and is controlled to be on-off through a circuit breaker.
Further, the output end of the first unit GCB switch and the output end of the second unit GCB switch are connected with current transformers.
Further, the first peak shaving facility is electrically connected with a first peak shaving facility high-voltage standby power supply, a first peak shaving facility high-voltage auxiliary equipment and a first high-voltage electric energy storage peak shaving facility through a first peak shaving facility high-voltage bus;
the high-voltage bus of the first peak shaving facility is connected with a first section of a low-voltage PC through a first low-voltage transformer.
Further, the first peak shaving facility high-voltage standby power supply, the first peak shaving facility high-voltage auxiliary equipment, the first high-voltage energy storage peak shaving facility and the first low-voltage transformer are all connected with the first peak shaving facility high-voltage bus through a circuit breaker;
the first peak shaving facility high-voltage standby power supply, the first peak shaving facility high-voltage auxiliary equipment, the first high-voltage energy storage peak shaving facility and the first low-voltage transformer are connected in parallel.
Further, the second peak shaver facility is electrically connected with a second peak shaver facility high-voltage standby power supply, a second peak shaver facility high-voltage auxiliary equipment and a second high-voltage electric energy storage peak shaver facility through a second peak shaver facility high-voltage bus;
and the second peak shaving facility high-voltage bus is connected with a low-voltage PC second section through a second low-voltage transformer.
Further, the second peak shaving facility high-voltage standby power supply, the second peak shaving facility high-voltage auxiliary equipment, the second high-voltage energy storage peak shaving facility and the second low-voltage transformer are all connected with the second peak shaving facility high-voltage bus through circuit breakers;
and the second peak regulation facility high-voltage standby power supply, the second peak regulation facility high-voltage auxiliary equipment, the second high-voltage energy storage peak regulation facility and the second low-voltage transformer are connected in parallel.
Further, the electric boiler peak regulation system is connected with the first peak regulation facility high-voltage bus and the second peak regulation facility high-voltage bus through a first circuit and a second circuit respectively, and circuit breakers for controlling the on-off of the first circuit and the second circuit are arranged on the first circuit and the second circuit respectively;
the electric boiler peak shaving system comprises:
peak regulating bus of electric boiler;
the electric boiler is electrically connected with the electric boiler peak regulation bus;
an electric steam booster electrically connected with the electric boiler peak regulating bus;
the electric boiler is connected with the electric steam booster to output industrial steam;
the industrial water supply equipment is communicated with the electric boiler through a water supply booster pump so as to convey water to be heated to the electric boiler.
In the technical scheme, the power access system for the generator outlet access peak shaving facility has the following beneficial effects:
the system of the application seals the peak-shaving transformer and the outlet of the peak-shaving facility generator, and can disconnect the switch in the non-peak-shaving time period to avoid the no-load loss of the peak-shaving transformer; the system is reliable, and the peak shaving facility fault can be disconnected through the GCB, so that the safe operation of the generator set is not influenced;
the system is simple, flexible in operation, capable of operating independently in units, and suitable for all power plants with peak regulation requirements, and is not limited by the space of the high-voltage switch station.
The system can be compactly arranged, fully utilizes the space of the side face of the main transformer of the power plant generator, and improves the field utilization rate.
The peak regulation system of the electric boiler is additionally arranged in the peak regulation system, so that industrial water can be converted into high-temperature steam for standby.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic circuit diagram of a power access system for accessing a peak shaving facility to a generator outlet according to an embodiment of the present application.
Reference numerals illustrate:
101. a first unit generator; 102. a first unit main transformer; 103. 220kV high-voltage bus; 104. a first unit GCB switch; 105. a first peak shaving facility transformer; 106. a first peak shaving facility high voltage bus; 107. a first peak shaving facility high voltage backup power supply; 108. a first peak shaver facility high-voltage auxiliary device; 109. a first high voltage electric energy storage peak shaving facility; 110. a first low voltage transformer; 111. a low voltage PC first stage;
201. a second unit generator; 202. a second unit main transformer; 204. a second unit GCB switch; 205. a second peak shaving facility transformer; 206. a second peak shaving facility high voltage bus; 207. a second peak shaving facility high voltage standby power supply; 208. a second peak shaver facility high-voltage auxiliary device; 209. the second high-voltage electric energy storage peak regulation facility; 210. a second low voltage transformer; 211. a low voltage PC second stage;
301. a circuit breaker; 302. a common box bus; 303. a current transformer;
401. a first circuit; 402. a second circuit; 403. an electric boiler; 404. an electric steam booster; 405. and (5) feeding water booster pumps.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
See fig. 1;
the embodiment of the application discloses a power access system for a generator outlet to access a peak shaving facility, which mainly comprises:
220kV high-voltage bus 103;
a generator electrically connected with the 220kV high-voltage bus 103 through a main transformer;
the generator is controlled to be connected with the 220kV high-voltage bus 103 through a circuit breaker;
the system further comprises:
peak shaving facility transformers connected with the main transformer through a common box sealing mother 302; and
peak shaving facilities connected with the peak shaving facility transformer;
a circuit breaker 301 is installed between the peak shaving facility transformer and the peak shaving facility to control the communication state.
Specifically, the embodiment discloses a system for connecting a peak shaving facility transformer and a peak shaving facility to corresponding generator output ends through a common box sealing nut, which can freely switch circuits according to peak shaving requirements and is more flexible to operate. The system mainly comprises a 220kV high-voltage bus 103 and a generator electrically connected with the 220kV high-voltage bus 103 through a wire, and meanwhile, the generator is connected with the 220kV high-voltage bus 103 through a main transformer so as to regulate output voltage/current through the main transformer. In order to be able to adapt to the peak shaving requirements, the output of the generator is connected to a peak shaving facility transformer and a peak shaving facility via a common box enclosure 302, wherein the switch is controlled via a GCB switch on the branch and a circuit breaker is installed on each line. The system can be used independently, can also be started for use simultaneously according to actual power supply requirements, and has better applicability, simplified structure and flexible operation.
Preferably, in this embodiment, the 220kV high-voltage bus 103 is connected to two sets of generators, which are the first set generator 101 and the second set generator 201 respectively;
the main transformer connected with the first unit generator 101 is a first unit main transformer 102;
the main transformer connected with the second unit generator 201 is a second unit main transformer 202;
the common box sealing mother 302 is connected with the first unit generator 101, the other end of the common box sealing mother 302 is connected with the first unit GCB switch 104, and the first unit GCB switch 104 is connected with a first peak shaving facility through a first peak shaving facility transformer 105 and is controlled to be on-off through a circuit breaker 301;
the co-box sealing mother 302 is connected with the second unit generator 201, the other end of the co-box sealing mother 302 is connected with the second unit GCB switch 204, and the second unit GCB switch 204 is connected with a second peak shaving facility through a second peak shaving facility transformer 205 and is controlled to be on-off through a circuit breaker 301.
The output end of the first unit GCB switch 104 and the output end of the second unit GCB switch 204 are both connected with a current transformer 303.
Further, it is: the first peak shaver facility is electrically connected with a first peak shaver facility high-voltage standby power supply 107, a first peak shaver facility high-voltage auxiliary equipment 108 and a first high-voltage electric energy storage peak shaver facility 109 through a first peak shaver facility high-voltage bus 106;
the first peak shaver facility high-voltage bus 106 is connected to a low-voltage PC first section 111 through a first low-voltage transformer 110.
The first peak shaving facility high-voltage standby power supply 107, the first peak shaving facility high-voltage auxiliary equipment 108, the first high-voltage electric energy storage peak shaving facility 109 and the first low-voltage transformer 110 are all connected with the first peak shaving facility high-voltage bus 106 through a circuit breaker 301;
the first peak shaving facility high voltage standby power supply 107, the first peak shaving facility high voltage auxiliary equipment 108, the first high voltage electric energy storage peak shaving facility 109 and the first low voltage transformer 110 are connected in parallel.
Further, it is: the second peak shaver facility is electrically connected with a second peak shaver facility high-voltage standby power supply 207, a second peak shaver facility high-voltage auxiliary equipment 208 and a second high-voltage energy storage peak shaver facility 209 through a second peak shaver facility high-voltage bus 206;
the second peak shaving facility high voltage bus 206 is connected to a low voltage PC second section 211 through a second low voltage transformer 210.
The second peak regulation facility high-voltage standby power supply 207, the second peak regulation facility high-voltage auxiliary equipment 208, the second high-voltage energy storage peak regulation facility 209 and the second low-voltage transformer 210 are all connected with the second peak regulation facility high-voltage bus 206 through the circuit breaker 301;
the second peak shaving facility high voltage standby power supply 207, the second peak shaving facility high voltage auxiliary device 208, the second high voltage electric energy storage peak shaving facility 209, and the second low voltage transformer 210 are connected in parallel.
The embodiment specifically introduces a peak shaving facility transformer and a peak shaving facility connecting structure connected with the corresponding generator, which can randomly switch lines according to actual power supply requirements and peak shaving requirements, and has better applicability.
In addition, the peak shaving facility of the embodiment is connected with an electric boiler peak shaving system, the electric boiler peak shaving system is respectively connected with the first peak shaving facility high voltage bus 106 and the second peak shaving facility high voltage bus 206 through a first circuit 401 and a second circuit 402, and a breaker 301 for controlling the on-off of the first circuit 401 and the second circuit 402 is arranged on the first circuit 401 and the second circuit 402;
the peak shaving system of the electric boiler comprises:
peak regulating bus of electric boiler;
an electric boiler 403 electrically connected to the electric boiler peak shaver bus;
an electric steam booster 404 electrically connected to the electric boiler peak shaver bus;
the electric boiler 403 is connected with the electric steam booster 404 to output industrial steam;
the industrial water supply communicates with the electric boiler 405 through a water supply booster pump 405 to deliver water to be heated to the electric boiler 403.
In the technical scheme, the power access system for the generator outlet access peak shaving facility has the following beneficial effects:
the system of the application seals the peak-shaving transformer and the outlet of the peak-shaving facility generator, and can disconnect the switch in the non-peak-shaving time period to avoid the no-load loss of the peak-shaving transformer; the system is reliable, and the peak shaving facility fault can be disconnected through the GCB, so that the safe operation of the generator set is not influenced;
the system is simple, flexible in operation, capable of operating independently in units, and suitable for all power plants with peak regulation requirements, and is not limited by the space of the high-voltage switch station.
The system can be compactly arranged, fully utilizes the space of the side face of the main transformer of the power plant generator, and improves the field utilization rate.
The peak regulation system of the electric boiler is additionally arranged in the peak regulation system, so that industrial water can be converted into high-temperature steam for standby.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (2)
1. The utility model provides a power access system of generator export access peak shaving facility which characterized in that, this system mainly includes:
220kV high-voltage bus (103);
a generator electrically connected with the 220kV high-voltage bus (103) through a main transformer;
the generator controls the on-off of the 220kV high-voltage bus (103) through a circuit breaker (301);
the system further comprises:
the peak regulation facility transformer is connected with the main transformer through a common box sealing mother (302); and
peak shaving facilities connected with the peak shaving facility transformer;
a breaker (301) is arranged between the peak shaving facility transformer and the peak shaving facility to control the communication state;
the peak regulation facility is connected with an electric boiler peak regulation system;
the 220kV high-voltage bus (103) is connected with two groups of generators, namely a first unit generator (101) and a second unit generator (201);
the main transformer connected with the first unit generator (101) is a first unit main transformer (102);
the main transformer connected with the second unit generator (201) is a second unit main transformer (202);
the common box sealing mother (302) is connected with the output end of the first unit generator (101), the other end of the common box sealing mother (302) is connected with a first unit GCB switch (104), and the first unit GCB switch (104) is connected with a first peak shaving facility through a first peak shaving facility transformer (105) and is controlled to be on-off through a circuit breaker (301);
the common box sealing mother (302) is connected with the second unit generator (201), the other end of the common box sealing mother (302) is connected with a second unit GCB switch (204), and the second unit GCB switch (204) is connected with a second peak shaving facility through a second peak shaving facility transformer (205) and is controlled to be on-off through a circuit breaker (301);
the first peak shaving facility is electrically connected with a first peak shaving facility high-voltage standby power supply (107), a first peak shaving facility high-voltage auxiliary device (108) and a first high-voltage electric energy storage peak shaving facility (109) through a first peak shaving facility high-voltage bus (106);
the first peak shaving facility high-voltage bus (106) is connected with a low-voltage PC first section (111) through a first low-voltage transformer (110);
the first peak shaving facility high-voltage standby power supply (107), the first peak shaving facility high-voltage auxiliary equipment (108), the first high-voltage energy storage peak shaving facility (109) and the first low-voltage transformer (110) are connected with the first peak shaving facility high-voltage bus (106) through a circuit breaker (301);
the first peak shaving facility high-voltage standby power supply (107), the first peak shaving facility high-voltage auxiliary equipment (108), the first high-voltage electric energy storage peak shaving facility (109) and the first low-voltage transformer (110) are connected in parallel;
the second peak shaving facility is electrically connected with a second peak shaving facility high-voltage standby power supply (207), second peak shaving facility high-voltage auxiliary equipment (208) and a second high-voltage electric energy storage peak shaving facility (209) through a second peak shaving facility high-voltage bus (206);
the second peak shaving facility high-voltage bus (206) is connected with a low-voltage PC second section (211) through a second low-voltage transformer (210);
the second peak shaving facility high-voltage standby power supply (207), the second peak shaving facility high-voltage auxiliary equipment (208), the second high-voltage energy storage peak shaving facility (209) and the second low-voltage transformer (210) are all connected with the second peak shaving facility high-voltage bus (206) through a circuit breaker (301);
the second peak shaving facility high-voltage standby power supply (207), the second peak shaving facility high-voltage auxiliary equipment (208), the second high-voltage electric energy storage peak shaving facility (209) and the second low-voltage transformer (210) are connected in parallel;
the electric boiler peak regulation system is connected with the first peak regulation facility high-voltage bus (106) and the second peak regulation facility high-voltage bus (206) through a first circuit and a second circuit respectively, and a breaker (301) for controlling the on-off of the first circuit (401) and the second circuit (402) is arranged on the first circuit (401) and the second circuit (402);
the electric boiler peak shaving system comprises:
peak regulating bus of electric boiler;
an electric boiler (403) electrically connected to the electric boiler peak shaver bus;
an electric steam booster (404) electrically connected to the electric boiler peak shaver bus;
the electric boiler (403) is connected with the electric steam booster (404) to output industrial steam;
an industrial water supply communicates with the electric boiler (403) via a water supply booster pump (405) to deliver water to be heated to the electric boiler (403).
2. The power access system of the generator outlet access peak shaving facility according to claim 1, wherein the output end of the first unit GCB switch (104) and the output end of the second unit GCB switch (204) are both connected with a current transformer (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039068.6A CN111162530B (en) | 2020-01-14 | 2020-01-14 | Power access system for generator outlet to access peak shaving facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039068.6A CN111162530B (en) | 2020-01-14 | 2020-01-14 | Power access system for generator outlet to access peak shaving facility |
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| Publication Number | Publication Date |
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| CN111162530A CN111162530A (en) | 2020-05-15 |
| CN111162530B true CN111162530B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010039068.6A Active CN111162530B (en) | 2020-01-14 | 2020-01-14 | Power access system for generator outlet to access peak shaving facility |
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| CN111987790B (en) * | 2020-08-11 | 2024-02-20 | 云南电网有限责任公司丽江供电局 | Get electric installation in looped netowrk cabinet |
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| JP2004242397A (en) * | 2003-02-04 | 2004-08-26 | Hitachi Ltd | Power facility for emergency motor of power generation plant |
| CN107834584A (en) * | 2017-11-30 | 2018-03-23 | 赫普科技发展（北京）有限公司 | Auxiliary peak-frequency regulation facility system based on AGC controls |
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| CN207853482U (en) * | 2018-02-07 | 2018-09-11 | 沈阳汇智源电力工程技术服务有限公司 | A kind of electric heat storage peak adjusting device electricity getting system |
| CN108879745A (en) * | 2018-09-12 | 2018-11-23 | 党祺云 | A kind of comprehensive generating system and method improving peak load regulation economy |
| CN209488186U (en) * | 2019-04-12 | 2019-10-11 | 西安热工研究院有限公司 | A kind of power plant AGC energy storage auxiliary frequency modulation system |
-
2020
- 2020-01-14 CN CN202010039068.6A patent/CN111162530B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004242397A (en) * | 2003-02-04 | 2004-08-26 | Hitachi Ltd | Power facility for emergency motor of power generation plant |
| CN107834584A (en) * | 2017-11-30 | 2018-03-23 | 赫普科技发展（北京）有限公司 | Auxiliary peak-frequency regulation facility system based on AGC controls |
| CN108063459A (en) * | 2017-12-01 | 2018-05-22 | 国网辽宁省电力有限公司 | A kind of control method for improving power plant's depth peak modulation capacity |
| CN207853482U (en) * | 2018-02-07 | 2018-09-11 | 沈阳汇智源电力工程技术服务有限公司 | A kind of electric heat storage peak adjusting device electricity getting system |
| CN108879745A (en) * | 2018-09-12 | 2018-11-23 | 党祺云 | A kind of comprehensive generating system and method improving peak load regulation economy |
| CN209488186U (en) * | 2019-04-12 | 2019-10-11 | 西安热工研究院有限公司 | A kind of power plant AGC energy storage auxiliary frequency modulation system |
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