CN111162530A - Power access system for accessing generator outlet to peak regulation facility - Google Patents
Power access system for accessing generator outlet to peak regulation facility Download PDFInfo
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- CN111162530A CN111162530A CN202010039068.6A CN202010039068A CN111162530A CN 111162530 A CN111162530 A CN 111162530A CN 202010039068 A CN202010039068 A CN 202010039068A CN 111162530 A CN111162530 A CN 111162530A
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- peak shaving
- facility
- voltage
- shaving facility
- transformer
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- 238000004146 energy storage Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000008235 industrial water Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 241000208199 Buxus sempervirens Species 0.000 claims 5
- 239000003245 coal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000034 method Methods 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 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 invention discloses a power access system for accessing an outlet of a generator to a peak regulation 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 is controlled to be connected with the 220kV high-voltage bus in a switching mode through a circuit breaker; the system further comprises: the peak regulation facility transformer is connected with the main transformer through a common box seal nut; and a peak shaving facility connected to the peak shaving facility transformer; the system of the invention seals the peak regulation transformer and the peak regulation facility generator outlet nut, and can turn off the switch in the non-peak regulation time period, thereby avoiding the no-load loss of the peak regulation transformer; the system is reliable, the fault of the peak shaving facility can be disconnected through the GCB, and the safe operation of the generator set is not influenced.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a power access system with a generator outlet connected to a peak shaving facility.
Background
At present, the new energy power generation in China is rapidly developed, and the coal electricity production capacity is surplus. When the proportion of new energy in a power grid is gradually enlarged, the demand on a peak shaving power supply is gradually increased, and compared with power supplies such as new energy, the coal-electricity peak shaving performance is better. For countries where coal is the primary energy source, highly regulated coal power plants are the most realistic and feasible option.
Due to the fact that the coal-electricity unit bears the functions of high-speed increasing non-fossil energy power generation deep peak regulation, standby and the like, the thermal power unit, particularly the coal-electricity unit, can continuously operate under low load in the coming years or the deep peak regulation becomes a normal state. And spare intervals are not reserved in the switching stations of most of domestic active coal-electric units, and meanwhile, enough space is not provided in the switching stations to expand new intervals, so that electric energy storage and electric heat storage peak regulation facilities cannot be additionally arranged in a power plant.
Disclosure of Invention
The invention aims to provide a power access system which is simple in system, flexible in operation and capable of achieving independent operation of units.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to an electric power access system for accessing an outlet of a generator to a peak shaving facility, which mainly comprises:
220kV high-voltage bus;
the generator is electrically connected with the 220kV high-voltage bus through a main transformer;
the generator is controlled to be connected with the 220kV high-voltage bus in a switching mode through a circuit breaker;
the system further comprises:
the peak regulation facility transformer is connected with the main transformer through a common box seal nut; and
the peak shaving facility is connected with the peak shaving facility transformer;
a circuit 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 nut is connected with the first unit transformer, the other end of the common box sealing nut 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 switched on and switched off through a circuit breaker;
the common box sealing nut is connected with the second unit transformer, the other end of the common box sealing nut 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 switched on and switched off through a circuit breaker.
Furthermore, the output end of the first unit GCB switch and the output end of the second unit GCB switch are both connected with a current transformer.
Furthermore, the first peak shaving facility is electrically connected with a first peak shaving facility high-voltage standby power supply, first peak shaving facility high-voltage auxiliary equipment and a first high-voltage electricity storage peak shaving facility through a first peak shaving facility high-voltage bus;
the first peak shaving facility high-voltage bus is connected with a low-voltage PC first section 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 electricity 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 electricity energy storage peak shaving facility and the first low-voltage transformer are connected in parallel.
Further, the second peak shaving facility is electrically connected with a second peak shaving facility high-voltage standby power supply, a second peak shaving facility high-voltage auxiliary device and a second high-voltage electricity storage peak shaving facility through a second peak shaving facility high-voltage bus;
and the high-voltage bus of the second peak shaving facility is connected with a second low-voltage PC 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 electricity energy storage peak shaving facility and the second low-voltage transformer are all connected with the second peak shaving facility high-voltage bus through a circuit breaker;
the second peak shaving facility high-voltage standby power supply, the second peak shaving facility high-voltage auxiliary equipment, the second high-voltage electricity energy storage peak shaving facility and the second low-voltage transformer are connected in parallel.
Furthermore, the electric boiler peak shaving system is respectively connected with the first peak shaving facility high-voltage bus and the second peak shaving facility high-voltage bus through a first circuit and a second circuit, and the first circuit and the second circuit are both provided with circuit breakers for controlling the connection and disconnection of the first circuit and the second circuit;
the electric boiler peak shaving system comprises:
a peak shaving bus of the electric boiler;
the electric boiler is electrically connected with the peak regulation bus of the electric boiler;
the electric steam booster is electrically connected with the electric boiler peak regulation 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 accessing the generator outlet to the peak shaving facility has the following beneficial effects:
the system of the invention seals the peak regulation transformer and the peak regulation facility generator outlet nut, and can turn off the switch in the non-peak regulation time period, thereby avoiding the no-load loss of the peak regulation transformer; the system is reliable, the fault of the peak regulation facility can be disconnected through the GCB, and the safe operation of the generator set is not influenced;
the system is simple, flexible to operate, capable of operating independently in units, suitable for all power plants with peak shaving requirements and not limited by the space of a high-voltage switch station.
The system can be compactly arranged, fully utilizes the space of the side surface of the main transformer of the generator of the power plant, and improves the site utilization rate.
The invention adds an electric boiler peak regulation system in the peak regulation system, and can convert industrial water into high-temperature steam for standby.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic circuit diagram of an electric power access system of a peak shaving facility accessed to an outlet of a generator according to an embodiment of the present invention.
Description of reference numerals:
101. a first group generator; 102. a first group main transformer; 103. 220kV high-voltage bus; 104. a first unit GCB switch; 105. a first peak shaving utility transformer; 106. a first peak shaving facility high voltage bus; 107. a first peak shaving facility high voltage standby power supply; 108. a first peak shaving facility high voltage auxiliary equipment; 109. a first high-voltage 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 utility 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 shaving facility high voltage auxiliary equipment; 209. a second high-voltage energy storage peak shaving 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. a feed water booster pump.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1;
the embodiment of the invention discloses an electric power access system for accessing an outlet of a generator to a peak shaving facility, which mainly comprises:
a 220kV high-voltage bus 103;
the generator is 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:
a peak shaving facility transformer connected with the main transformer through a common box seal nut 302; and
the peak shaving facility is 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, this embodiment discloses a system that connects peak shaving facility transformer and peak shaving facility to corresponding generator output through box sealing mother altogether, and it can freely switch over the circuit according to the peak shaving requirement, and the operation is more nimble. 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 meet the peak shaving requirement, a peak shaving facility transformer and a peak shaving facility are connected to the output end of the generator through a common box sealing nut 302, wherein a switch is controlled on the branch through a GCB switch, and a circuit breaker is installed on each line. The system can be used independently, can also be started and used simultaneously according to actual power supply requirements, and has the advantages of better applicability, simplified structure and flexible operation.
Preferably, in this embodiment, the 220kV high-voltage bus 103 is connected with 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 nut 302 is connected with the first unit generator 101, the other end of the common box sealing nut 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 switched on and switched off through a circuit breaker 301;
the common box sealing nut 302 is connected with the second unit generator 201, the other end of the common box sealing nut 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 switched on and switched 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, the method comprises the following steps: 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 electricity storage peak shaving facility 109 through a first peak shaving facility high-voltage bus 106;
the first peaking 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 electricity 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 electricity energy storage peak shaving facility 109 and the first low-voltage transformer 110 are connected in parallel.
Further, the method comprises the following steps: the second peak shaving facility is electrically connected with a second peak shaving facility high-voltage standby power supply 207, a second peak shaving facility high-voltage auxiliary device 208 and a second high-voltage electricity storage peak shaving facility 209 through a second peak shaving facility high-voltage bus 206;
the second peaking 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 shaving facility high-voltage standby power supply 207, the second peak shaving facility high-voltage auxiliary equipment 208, the second high-voltage electricity energy storage peak shaving facility 209 and the second low-voltage transformer 210 are connected with a 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 electricity energy storage peak shaving facility 209 and the second low-voltage transformer 210 are connected in parallel.
The embodiment specifically introduces the connection structure of the peak shaving facility transformer and the peak shaving facility connected with the corresponding generator, and the connection structure can switch lines at will according to actual power supply requirements and peak shaving requirements, so that the applicability is better.
In addition, the peak shaving facility of the present 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 the first circuit 401 and the second circuit 402 are both provided with a circuit breaker 301 for controlling the on-off of the first circuit 401 and the second circuit 402;
the electric boiler peak shaving system comprises:
a peak shaving bus of the electric boiler;
the electric boiler 403 is electrically connected with the peak shaving bus of the electric boiler;
an electric steam booster 404 electrically connected with the electric boiler peak regulation bus;
the electric boiler 403 is connected with an electric steam booster 404 to output industrial steam;
the industrial water supply equipment communicates with the electric boiler 405 through a feed water pressurizing pump 405 to deliver water to be heated to the electric boiler 403.
In the technical scheme, the power access system for accessing the generator outlet to the peak shaving facility has the following beneficial effects:
the system of the invention seals the peak regulation transformer and the peak regulation facility generator outlet nut, and can turn off the switch in the non-peak regulation time period, thereby avoiding the no-load loss of the peak regulation transformer; the system is reliable, the fault of the peak regulation facility can be disconnected through the GCB, and the safe operation of the generator set is not influenced;
the system is simple, flexible to operate, capable of operating independently in units, suitable for all power plants with peak shaving requirements and not limited by the space of a high-voltage switch station.
The system can be compactly arranged, fully utilizes the space of the side surface of the main transformer of the generator of the power plant, and improves the site utilization rate.
The invention adds an electric boiler peak regulation system in the peak regulation system, and can convert industrial water into high-temperature steam for standby.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. An electric power access system for accessing an outlet of a generator to a peak shaver facility, the system mainly comprises:
a 220kV high voltage bus (103);
the generator is 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) in a switching mode through a circuit breaker (301);
the system further comprises:
the peak shaving facility transformer is connected with the main transformer through a common box sealing nut (302); and
the peak shaving facility is connected with the peak shaving facility transformer;
a circuit breaker (301) 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.
2. The power access system of a generator outlet access peak shaver facility as claimed in claim 1, characterized in that two groups of generators, namely a first group generator (101) and a second group generator (201), are connected to the 220kV high voltage bus (103);
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 nut (302) is connected with the output end of the first unit generator (101), the other end of the common box sealing nut (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 switched on and switched off through a circuit breaker (301);
the common-box seal nut (302) is connected with the second unit generator (201), the other end of the common-box seal nut (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 switched on and off through a circuit breaker (301).
3. The power access system of a generator outlet access peak shaver facility as claimed in claim 2, characterized in that the output of the first set of GCB switches (104) and the output of the second set of GCB switches (204) are connected with current transformers (303).
4. The power access system of the generator outlet access peak shaving facility according to claim 2, characterized in that 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 electrical 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).
5. The power access system of a generator outlet access peak shaving facility according to claim 4, characterized in that the first peak shaving facility high voltage backup power supply (107), the first peak shaving facility high voltage auxiliary equipment (108), the first high voltage electrical energy storage peak shaving facility (109), 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 electricity energy storage peak shaving facility (109) and the first low-voltage transformer (110) are connected in parallel.
6. The power access system of the generator outlet access peak shaving facility according to claim 5, characterized in that the second peak shaving facility is electrically connected with a second peak shaving facility high-voltage standby power supply (207), a second peak shaving facility high-voltage auxiliary device (208) and a second high-voltage electrical energy storage peak shaving facility (209) through a second peak shaving facility high-voltage bus (206);
and 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).
7. The power access system of a generator outlet access peak shaving facility according to claim 6, characterized in that the second peak shaving facility high voltage backup power supply (207), the second peak shaving facility high voltage auxiliary equipment (208), the second high voltage electrical 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 electricity energy storage peak shaving facility (209) and the second low-voltage transformer (210) are connected in parallel.
8. The power access system of a generator outlet access peak shaving facility according to claim 7, characterized in that the electric boiler peak shaving system is 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 and a second circuit respectively, and a circuit breaker (301) for controlling the on-off of the first circuit (401) and the second circuit (402) is installed on each of the first circuit (401) and the second circuit (402);
the electric boiler peak shaving system comprises:
a peak shaving bus of the electric boiler;
the electric boiler (403) is electrically connected with the electric boiler peak regulation bus;
an electric steam booster (404) electrically connected with the electric boiler peak shaving bus;
the electric boiler (403) is connected with the electric steam booster (404) to output industrial steam;
the industrial water supply equipment is communicated with the electric boiler (403) through a feed water booster pump (405) to deliver water to be heated to the electric boiler (403).
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 true CN111162530A (en) | 2020-05-15 |
| CN111162530B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987790A (en) * | 2020-08-11 | 2020-11-24 | 云南电网有限责任公司丽江供电局 | Power taking device in ring main unit |
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2020
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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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111987790A (en) * | 2020-08-11 | 2020-11-24 | 云南电网有限责任公司丽江供电局 | Power taking device in ring main unit |
| 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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| Publication number | Publication date |
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| CN111162530B (en) | 2023-09-19 |
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