CN203352172U - Auxiliary power wiring structure for large thermal power plant - Google Patents
Auxiliary power wiring structure for large thermal power plant Download PDFInfo
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- CN203352172U CN203352172U CN2013204478032U CN201320447803U CN203352172U CN 203352172 U CN203352172 U CN 203352172U CN 2013204478032 U CN2013204478032 U CN 2013204478032U CN 201320447803 U CN201320447803 U CN 201320447803U CN 203352172 U CN203352172 U CN 203352172U
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- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
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Abstract
The utility model discloses an auxiliary power wiring structure for a large thermal power plant. The structure at least comprises an even number, no less than two, of generator sets. A generator outlet circuit breaker is arranged at each generator outlet. An enclosed busbar is connected between the circuit breaker of the generator set and a main transformer. The primary side of a high-voltage station service transformer is connected with the enclosed busbar. The secondary side of the high-voltage station service transformer is connected with a station service operation A segment and a station service operation B segment through a nonsegregated busbar. The station service operation A segment and the station service operation B segment of each generator set are connected with the station service operation A segment and the station service operation B segment of another generator set through a nonsegregated busbar, respectively. The joints of the station service operation A segment and the station service operation B segment of each generator set and the nonsegregated busbar are provided with circuit breakers. In this way, a hand-in-hand structure is formed between the station service operation segments of two generator sets. According to the utility model, the auxiliary power wiring is simplified, the floor space of the equipment and the initial investment of building a power plant are decreased, and the operation expense after the installation of the power plant is reduced.
Description
Technical field
The utility model belongs to the Power Station Design field, relates to a kind of large thermal power plant station service wiring construction.
Background technology
Station service refers to that power plant is starting, turn round, stop labour, in maintenance process, drags the required electricity consumption of the power consumption equipments such as operation, operation, test, maintenance, illumination of the motor of station-service plant equipment and full factory.Visible, the reliability service of power plant be unable to do without reliable station service.Yet the wiring construction of station service is closely related with the station service power supply again, therefore, the station service wiring need meet reliability, the flexibility of operation and the requirement of economic rationality to power supply.When the research wiring construction, for clear, convenient, usually three-phase circuit figure is reduced to line chart and is described.
The station service wiring not only requires to meet power plant's reliability service, also meet the flexibility of operation and the economy of building power plant simultaneously, particularly requiring to build under the environment of life cycle management maximizing the benefits power plant at present, the wiring of appropriate design station service, the initial investment of minimizing power plant reaches operation and maintenance cost in the future becomes focus.
Large thermal power plant when generator outlet circuit breaker (Generator Circuit-Breakers, GCB) is set, shutdown transformer of operated by rotary motion or have the spare transformer of stopping function concurrently.The power supply of shutting down transformer draws and is connected to two kinds of structures: do not establish high voltage bus in factory 1., electric energy adopts generator-circuit breaker-transformer-sets of lines form directly to send, now set shutdown transformer need to arrange special circuit and draws and connect from electrical network, build special circuit and will increase certain investment cost, simultaneously, " separating the factory and network, surf the Net at a competitive price " today, it is inevitable collecting " basic charge as per installed capacity ", take and build 2 * 1000MW unit as example, press the basic charge as per installed capacity 20 yuan/kVA month, 30 years meters of economical operation, the basic charge as per installed capacity of paying in the life cycle management domestic demand is converted present worth: 21,075 ten thousand yuan, 2. while in factory, high voltage bus being set, electric energy is sent via high voltage distribution installation again, now shuts down transformer and generally from power distribution equipment in power plant, draws and connect, and saves the expense and the basic charge as per installed capacity that set up special circuit, reach increase equipment in power distribution equipment but the shutdown transformer will be set, increased investment.Therefore, during new power plant construction, under the prerequisite that guarantees station service reliability and operational flexibility, how evading " basic charge as per installed capacity " and reduce cost becomes the problem that the large thermal power plant design needs emphasis to consider.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and the station service wiring construction that in a kind of power reliable, flexible operation and life cycle management, investment and operating cost economize most is provided.
A kind of large thermal power plant station service wiring construction, at least comprise two and above even number platform generating set, every generator outlet is equipped with generator outlet circuit breaker GCB, and every generating set all adopts the wiring construction of generator-circuit breaker-transformer, be connected with enclosed busbar between the circuit breaker of described generating set and main transformer, the former limit of HV Auxiliary Transformer is connected with enclosed busbar; The secondary of HV Auxiliary Transformer is connected with station-service work B section with station-service work A section by common box bus; The station-service work A section of every generating set is connected with station-service work B section with the station-service work A section of another generating set respectively by common box bus with station-service work B section;
Every generating set station-service work A section and station-service work B section and common box bus junction are equipped with circuit breaker.
The large electric power plant unit refers to 600MW level and above thermal power generation unit;
Station-service active section electric pressure adopts 6kV or 10kV.
Beneficial effect
The utility model provides a kind of large thermal power plant station service wiring construction, at least comprise two and above even number platform generating set, every generator outlet is equipped with the generator outlet circuit breaker, and every generating set all adopts the wiring construction of generator-circuit breaker-transformer, be connected with enclosed busbar between the circuit breaker of described generating set and main transformer, the former limit of HV Auxiliary Transformer is connected with enclosed busbar; The secondary of HV Auxiliary Transformer is connected with station-service work B section with station-service work A section by common box bus; The station-service work A section of every generating set is connected with station-service work B section with the station-service work A section of another generating set respectively by common box bus with station-service work B section; Every generating set station-service work A section and station-service work B section and common box bus junction are equipped with circuit breaker.Adopt wiring construction described in the utility model greatly to simplify the station service wiring; Between two units, the station-service active section is connected to each other; having formed HV Auxiliary Transformer shuts down standby each other; save to arrange and shut down transformer or spare transformer; not only reduced the initial investment of occupation area of equipment and new power plant construction; and avoided power plant to build up rear produced basic charge as per installed capacity problem, make power plant reach maximizing the benefits in life cycle.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, for structural representation of the present utility model, a kind of large thermal power plant station service wiring construction, at least comprise two and above even number platform generating set, every generator outlet is equipped with the generator outlet circuit breaker, and every generating set all adopts the wiring construction of generator-circuit breaker-transformer, be connected with enclosed busbar between the circuit breaker of described generating set and main transformer, the former limit of HV Auxiliary Transformer is connected with enclosed busbar; The secondary of HV Auxiliary Transformer is connected with station-service work B section with station-service work A section by common box bus; The station-service work A section of every generating set is connected with station-service work B section with the station-service work A section of another generating set respectively by common box bus with station-service work B section;
Every generating set station-service work A section and station-service work B section and common box bus junction are equipped with circuit breaker.
The large electric power plant unit refers to 600MW level and above thermal power generation unit;
Station-service active section electric pressure adopts 6kV or 10kV.
Shut down transformer or spare transformer in the situation that do not establish, the station-service active section between two units is connected to each other and forms the station service wiring of " handing in hand ".
The wiring of " handing in hand " of above-mentioned station service at least includes two generating sets, and it can extend to four units or multicomputer more, but is connected to each other for the station-service active section between every two units, forms " handing in hand " wiring.
It is standby each other that the station-service active section of above-mentioned every unit is connected to each other by common box bus the high-voltage Auxiliary Working transformer that refers to two units; when a unit need to be shut down stand-by power supply, by another unit HV Auxiliary Transformer, to it, provide and shut down required power supply.Compare with traditional design method to save the shutdown transformer is set, reduce the new power plant construction initial investment, the basic charge as per installed capacity that need to pay while saving operation has reduced the equipment land area simultaneously.
Claims (1)
1. a large thermal power plant station service wiring construction, it is characterized in that, at least comprise two and above even number platform generating set, every generator outlet is equipped with the generator outlet circuit breaker, and every generating set all adopts the wiring construction of generator-circuit breaker-transformer, be connected with enclosed busbar between the circuit breaker of described generating set and main transformer, the former limit of HV Auxiliary Transformer is connected with this enclosed busbar; The secondary of HV Auxiliary Transformer is connected with station-service work B section with station-service work A section by common box bus; The station-service work A section of every generating set is connected with station-service work B section with the station-service work A section of another generating set respectively by common box bus with station-service work B section;
Every generating set station-service work A section and station-service work B section and common box bus junction are equipped with circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204478032U CN203352172U (en) | 2013-07-25 | 2013-07-25 | Auxiliary power wiring structure for large thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204478032U CN203352172U (en) | 2013-07-25 | 2013-07-25 | Auxiliary power wiring structure for large thermal power plant |
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| CN203352172U true CN203352172U (en) | 2013-12-18 |
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| CN2013204478032U Expired - Fee Related CN203352172U (en) | 2013-07-25 | 2013-07-25 | Auxiliary power wiring structure for large thermal power plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612137A (en) * | 2017-11-06 | 2018-01-19 | 国网福建省电力有限公司 | A kind of high reliability pressurized-water reactor nuclear power plant station service electric power system |
| CN110601235A (en) * | 2019-10-15 | 2019-12-20 | 西安热工研究院有限公司 | Super capacitor auxiliary frequency modulation system suitable for multiple units of thermal power plant |
| CN112865077A (en) * | 2021-01-13 | 2021-05-28 | 西安热工研究院有限公司 | Locking method for factory power supply system switch in hand-pulling mode |
| CN114156918A (en) * | 2021-11-25 | 2022-03-08 | 中盐华能储能科技有限公司 | Transformer of salt cavern compressed air energy storage power station and low-voltage station service configuration method |
| CN114336617A (en) * | 2022-01-12 | 2022-04-12 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
-
2013
- 2013-07-25 CN CN2013204478032U patent/CN203352172U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612137A (en) * | 2017-11-06 | 2018-01-19 | 国网福建省电力有限公司 | A kind of high reliability pressurized-water reactor nuclear power plant station service electric power system |
| CN110601235A (en) * | 2019-10-15 | 2019-12-20 | 西安热工研究院有限公司 | Super capacitor auxiliary frequency modulation system suitable for multiple units of thermal power plant |
| CN112865077A (en) * | 2021-01-13 | 2021-05-28 | 西安热工研究院有限公司 | Locking method for factory power supply system switch in hand-pulling mode |
| CN112865077B (en) * | 2021-01-13 | 2023-08-08 | 西安热工研究院有限公司 | Locking method of factory power system switch in hand-in-hand mode |
| CN114156918A (en) * | 2021-11-25 | 2022-03-08 | 中盐华能储能科技有限公司 | Transformer of salt cavern compressed air energy storage power station and low-voltage station service configuration method |
| CN114336617A (en) * | 2022-01-12 | 2022-04-12 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
| CN114336617B (en) * | 2022-01-12 | 2024-02-02 | 中国核电工程有限公司 | Power supply system of nuclear energy heat supply plant |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP HUNAN ELECTRIC POWE Free format text: FORMER NAME: HUNAN ELECTRIC POWER PROSPECTING DESIGN INST. |
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| CP03 | Change of name, title or address |
Address after: 410007 No. 471 West labour Road, Hunan, Changsha Patentee after: HUNAN ELECTRIC POWER DESIGN INSTITUTE OF CHINA ENERGY EGINEERING Corp.,Ltd. Address before: The 410000 West Hunan province Changsha Yuhua District No. 471 Patentee before: Hunan Electric Power Design Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |