CN112327160A - Hydropower station black start simulation test system and method of plant hydraulic generator - Google Patents
Hydropower station black start simulation test system and method of plant hydraulic generator Download PDFInfo
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- CN112327160A CN112327160A CN202011305829.4A CN202011305829A CN112327160A CN 112327160 A CN112327160 A CN 112327160A CN 202011305829 A CN202011305829 A CN 202011305829A CN 112327160 A CN112327160 A CN 112327160A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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Abstract
The invention relates to a hydropower station black start simulation test system and method of a service hydraulic generator, which comprises a 400V hydraulic generator, a second 400V service bus, a first 10kV hydraulic generator, a first main transformer and a second 220kV bus; under the conditions that a second 220kV line is sent out and the first 220kV line cannot be powered off, under the condition that the voltage of a second 220kV bus is completely lost, a first 10kV hydraulic generator set does not depend on any external power supply, only a 400V hydraulic generator set is used for dragging second 400V auxiliary equipment of a factory bus to operate, starting, constant-speed, generator excitation and stator voltage building starting procedures of the first 10kV hydraulic generator set are completed, voltage with stable frequency and correct indication value is built for the second 220kV bus on the local side, the black starting capability of the first 10kV hydraulic generator set is verified, and an environment-friendly black starting power supply can be provided for a power grid; and a 400V station-service hydraulic generator is configured to perform a black start test under the condition that a delivery line is not powered off.
Description
Technical Field
The invention belongs to the technical field of hydropower station black start, and particularly relates to a hydropower station black start simulation test system and method of a station hydraulic generator.
Background
Due to increasingly prominent environmental problems, organizations and countries make a plurality of policies aiming at the environmental problems, and the policies are aimed at protecting the environment, reducing carbon emission, maintaining sustainable development of energy, establishing environment-friendly energy and realizing harmony between human and nature. China announces the aim of reducing emission intensity of 2020 carbon emission to the world in response to the call of the world environment organization, and develops new energy from terrestrial photovoltaic and wind power to coastal offshore wind power projects for the purpose. The new energy is continuously accessed to the traditional power grid, and the power grid regulation and control difficulty is increased due to the randomness of power generation, so that the importance of the power grid in responding to black start defense of large-scale accidents is further highlighted. Most of the units with black start capability in China are hydroelectric generating units accounting for 16.26 percent, the gas turbine is limited by natural gas resources, the accounts of various provinces in China are few, and the hydroelectric generating set comprehensively becomes a main power supply for the power grid in China to cope with major power failure accidents by virtue of natural advantages. In order to efficiently cope with the increasingly steep black start capability of the power grid, the hydroelectric generating set is required to carry out black start capability construction work, and an environment-friendly and reliable high-quality black start power supply is provided for the power grid. The existing hydropower station black start technology has the following problems: (1) when the self energy storage of the hydropower station can not ensure the starting, the starting work needs to be carried out by virtue of a diesel generator, the diesel generator belongs to a power supply which is intermittently started in the hydropower station, and the diesel generator is limited by maintenance, weather and other reasons, and events which can not be started at key moment frequently occur; (2) the conventional hydropower station emergency power supply is generally a diesel generator, the advantage of natural energy storage of a dam is not considered, and a 400V station hydraulic generator can be configured to deal with an emergency accident that the hydropower station cannot be started in the diesel generator; (3) the traditional black start test has to vacate the line for testing, and therefore the black start test can be usually carried out when the line is powered off.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a hydropower station black start simulation test system and method of a plant hydraulic generator, which can replace a black start power supply diesel generator by configuring a 400V plant hydraulic generator, perform a black start test under the condition that a delivery line is not powered off, and verify that the hydropower station has the black start capability required by a power grid under the condition of power loss.
The invention is realized by the following technical scheme:
a hydropower station black start simulation test system of a service hydraulic generator comprises a 400V hydraulic generator, a second 400V service bus, a first 10kV hydraulic generator and a second 220kV bus;
the 400V hydraulic generator is connected with the second 400V service bus through a safety air switch;
the first 10kV hydraulic generator is connected with the second 220kV bus through a first outlet circuit breaker, a first 10kV disconnecting link, a first main transformer, a first 220kV circuit breaker and a first 220kV disconnecting link in sequence;
the 400V hydraulic generator is used for providing power for an auxiliary machine of a second 400V service bus of the first 10kV hydraulic generator.
Preferably, the system also comprises a first bus coupler disconnecting link, a first 220kV bus, a second 220kV disconnecting link, a third 400V station bus, a third 10kV disconnecting link, a first 10kV circuit breaker, a fourth 10kV disconnecting link, a first 10kV station bus and a second 400V interconnection disconnecting link;
one end of the first bus-coupled disconnecting link is connected with the second 220kV bus, and the other end of the first bus-coupled disconnecting link is connected with the first 220kV bus through the 220kV bus-coupled circuit breaker and the second bus-coupled disconnecting link;
one end of the second 220kV disconnecting link is connected with the first 220kV bus, and the other end of the second 220kV disconnecting link is connected with a common point between the first 220kV circuit breaker and the first 220kV disconnecting link;
the third 400V station-service bus is connected with the first 10kV station-service bus sequentially through a first 400V interconnection switch, a first 400V interconnection disconnecting link, a first 400V station-service bus, a first 400V disconnecting link, a first 400V switch, a second 400V disconnecting link, a first 400V station-service transformer, a second 10kV disconnecting link, a fifth 10kV disconnecting link, a first station-service 10kV isolation transformer, a second 10kV circuit breaker and a sixth 10kV disconnecting link;
the first 10kV station bus is connected with the third 400V station bus sequentially through a seventh 10kV disconnecting link, a third 10kV circuit breaker and a spare transformer;
one end of the fourth 10kV disconnecting link is connected with a common point between the first outlet circuit breaker and the first 10kV disconnecting link, and the other end of the fourth 10kV disconnecting link is connected with a common point between the second 10kV disconnecting link and the fifth 10kV disconnecting link through the first 10kV circuit breaker;
one section of the second 400V interconnection disconnecting link is connected with the third 400V service bus, and the other end of the second 400V interconnection disconnecting link is connected with the second 400V service bus through the second 400V interconnection switch and the third 400V interconnection disconnecting link.
Further, the system also comprises a third 400V disconnecting link, a tenth 10kV disconnecting link, a second 10kV service bus, a first 10kV connecting disconnecting link, a 10kV connecting circuit breaker, a second 10kV connecting disconnecting link, a second 10kV hydro-generator, a fourth 220kV disconnecting link, a fifth 220kV disconnecting link, a third 220kV circuit breaker, a second 220kV line, an eighth 220kV disconnecting link, a fourth 220kV circuit breaker and a first 220kV line;
one end of the third 400V disconnecting link is connected with the second 400V station bus, and the other end of the third 400V disconnecting link is connected with the second 10kV station bus through a second 400V switch, a fourth 400V disconnecting link, a second 400V station transformer, an eighth 10kV disconnecting link, an eleventh 10kV disconnecting link, a second station 10kV isolating transformer, a fifth 10kV circuit breaker and a twelfth 10kV disconnecting link in sequence;
the second 10kV hydraulic generator is connected with the second 220kV bus through a second outlet circuit breaker, a thirteenth 10kV disconnecting link, a second main transformer, a second 220kV circuit breaker and a third 220kV disconnecting link in sequence;
one end of the fourth 220kV disconnecting link is connected with the first 220kV bus, and the other end of the fourth 220kV disconnecting link is connected with a common point between the second 220kV circuit breaker and the third 220kV disconnecting link;
one end of the tenth 10kV disconnecting link is connected with a common point between the second outlet circuit breaker and the thirteenth 10kV disconnecting link, and the other end of the tenth 10kV disconnecting link is connected with a common point between the eighth 10kV disconnecting link and the eleventh 10kV disconnecting link through the fourth 10kV circuit breaker and the ninth 10kV disconnecting link;
one end of the fifth 220kV disconnecting link is connected with the second 220kV bus, and the other end of the fifth 220kV disconnecting link is connected with the first 220kV bus through a sixth 220kV disconnecting link;
one end of the third 220kV breaker is connected with a common point between the fifth 220kV disconnecting link and the sixth 220kV disconnecting link, and the other end of the third 220kV breaker is connected with the second 220kV line through the third 220kV breaker and the seventh 220kV disconnecting link;
one end of the eighth 220kV disconnecting link is connected with the second 220kV bus, and the other end of the eighth 220kV disconnecting link is connected with the first 220kV bus through a ninth 220kV disconnecting link;
one end of the fourth 220kV breaker is connected with a common point between the eighth 220kV disconnecting link and the ninth 220kV disconnecting link, and the other end of the fourth 220kV breaker is connected with the first 220kV line through the tenth 220kV disconnecting link.
Further, the rated output voltage of the 400V hydraulic generator is 400V, the rated output voltage of the first 10kV hydraulic generator is 10.5kV, the transformation ratio of the first main transformer is 242kV/10.5kV, the transformation ratios of the first 400V station transformer, the standby transformer and the second 400V station transformer are 10.5kV/0.4kV, and the transformation ratios of the first station 10kV isolation transformer and the second station 10kV isolation transformer are 10.5kV/10.5 kV.
Further, before the first 10kV hydro-generator and the first main transformer with the second 220kV bus are in black start, the safety air switch, the second 220kV disconnecting link, the first 400V interconnection switch, the third 10kV circuit breaker, the second 400V interconnection switch, the 10kV interconnection circuit breaker, the third 220kV disconnecting link, the sixth 220kV disconnecting link, and the eighth 220kV disconnecting link are all in a disconnected state; the first outlet breaker, the first 10kV disconnecting link, the first 220kV breaker, the first 220kV disconnecting link, the first female disconnecting link, the 220kV female disconnecting link breaker, the second female disconnecting link, the first 400V connecting disconnecting link, the first 400V switch, the second 400V disconnecting link, the second 10kV disconnecting link, the third 10kV disconnecting link, the first 10kV breaker, the fourth 10kV disconnecting link, the fifth 10kV disconnecting link, the second 10kV breaker, the sixth 10kV disconnecting link, the seventh 10kV disconnecting link, the second 400V connecting disconnecting link, the third 400V disconnecting link, the second 400V switch, the fourth 400V disconnecting link, the eighth 10kV disconnecting link, the ninth 10kV disconnecting link, the fourth 10kV breaker, the tenth 10kV disconnecting link, the eleventh 10kV disconnecting link, the fifth 10kV breaker, the twelfth 10kV disconnecting link, the first 10kV disconnecting link, the second 10kV disconnecting link, and the second outlet breaker, The thirteenth 10kV disconnecting link, the second 220kV breaker, the fourth 220kV disconnecting link, the fifth 220kV disconnecting link, the third 220kV breaker, the seventh 220kV disconnecting link, the ninth 220kV disconnecting link, the fourth 220kV breaker and the tenth 220kV disconnecting link are all in a closed state; first 10kV hydraulic generator and second 10kV hydraulic generator terminal voltage are 10.5kV, second 220kV circuit, first 220kV circuit are in electrified running state, first 10kV factory is with generating line, second 10kV factory is with generating line in electrified running state, second 400V factory is with generating line, first 400V factory is with transformer, second 400V factory is with transformer, first factory is with 10kV isolation transformer, second 220kV generating line, first main transformer, second main transformer all are in electrified running state, third 400V factory is with generating line, spare transformer are in hot standby state.
Further, after the first 10kV hydro-generator and the first main transformer are operated with a second 220kV bus black start isolation switching, the second 10kV circuit breaker, the first 400V switch, the first 10kV circuit breaker, the second 400V switch, the third 400V interconnection disconnecting link, the first outlet circuit breaker, the first 220kV circuit breaker, the fifth 220kV disconnecting link, and the 220kV buscouple circuit breaker are all in an off state; the 10kV interconnection circuit breaker, the third 10kV circuit breaker, the first 400V interconnection switch and the sixth 220kV disconnecting link are all in a closed state.
Further, when the first 10kV hydraulic generator and the first main transformer are provided with a second 220kV bus black start test, the terminal voltage of the 400V hydraulic generator is built to 400V, and the security air switch, the first outlet circuit breaker and the first 220kV circuit breaker are all in a closed state.
A hydropower station black start simulation test method of a plant hydraulic generator comprises the following steps:
1) carrying out black start isolation switching operation on the first 10kV hydro-generator and the first main transformer with a second 220kV bus, and entering the step 2);
2) starting the 400V water turbine generator, building pressure until Uab, Uac and Ubc are all 400V, frequency f is 50Hz, measuring and confirming that the phase sequence is correct, and entering step 3);
3) closing the safety air switch, supplying power to the second 400V service bus by the 400V hydraulic generator, and entering the step 4);
4) opening the guide vane of the first 10kV hydraulic generator, fixing the speed to 214.3r/min, and entering the step 5);
5) the first 10kV hydraulic generator is provided with a first main transformer for zero start-up and boosting, the first 10kV hydraulic generator is excited and built for voltage, and the step 6) is carried out;
6) building voltage of the first 10kV hydraulic generator to 20% of rated voltage, and entering the step 7);
7) building voltage of the first 10kV hydraulic generator to 50% of rated voltage, and entering step 8);
8) building voltage of the first 10kV hydro-generator to 100% of rated voltage, enabling the frequency to be 50Hz, and entering the step 9);
9) closing the first 220kV circuit breaker, wherein the voltage of the second 220kV bus is 220kV, and entering the step 10);
10) and disconnecting the first outlet circuit breaker and the first 220kV circuit breaker, and ending the black start test of the first 10kV hydraulic generator and the first main transformer with the second 220kV bus.
Further, the step 1) comprises the following steps:
101) checking and confirming that the 10kV tie breaker is in an open state, entering step 102);
102) step 103) of switching off the second 10kV breaker and switching on the 10kV interconnection breaker;
103) opening the first 400V switch, closing the third 10kV circuit breaker, closing the first 400V tie switch, opening the first outlet circuit breaker, and entering step 104);
104) the first 10kV circuit breaker is opened, the second 400V interconnection switch is checked and confirmed to be in an open state, the third 400V interconnection knife switch is opened, the second 400V switch is opened, and the step 105 is carried out;
105) opening the first 220kV breaker, closing the sixth 220kV disconnecting link, opening the fifth 220kV disconnecting link, and entering step 106);
106) and (3) disconnecting the 220kV bus-tie circuit breaker, wherein the first 10kV hydraulic generator is in a shutdown state, the second 400V service bus is free of voltage, the second 220kV bus is free of voltage, and the 400V hydraulic generator and the first main transformer are provided with the second 220kV bus to finish the black-start isolation switching operation.
Compared with the prior art, the invention has the following beneficial technical effects:
under the condition that the second 220kV line is sent out and the first 220kV line cannot be powered off, the invention simulates the condition that the voltage of the second 220kV bus is completely lost, the first 10kV water turbine generator set does not depend on any external power supply, only the 400V water turbine generator set drags the second 400V auxiliary equipment of the service bus to operate, the starting program of starting, fixing the speed, exciting the generator and building the voltage of the stator of the first 10kV water turbine generator is completed, the voltage with stable frequency and correct indication value is built for the second 220kV bus at the local side, the black starting capability of the first 10kV water turbine generator set is verified, and the environment-friendly black starting power supply can be provided for a power grid.
The 400V hydraulic generator replaces a traditional diesel generator, supplies power for the first 10kV hydraulic generator auxiliary engine during black start, realizes the starting of the large hydraulic generator set by the small hydraulic generator set, provides a more environment-friendly hydropower station black start system, and can be used for improving a flood discharge door, so that the safety of a dam is ensured.
Furthermore, the invention utilizes the energy storage advantage of the dam of the hydropower station, and the 400V hydraulic generator is configured on the second 400V station bus, so that the problem that the diesel generator cannot be started is solved, the capability of the hydropower station for coping with emergencies is enhanced, and the hydropower station becomes a reliable black-start power supply point.
Furthermore, the hydropower station black start simulation test system of the station hydraulic generator provided by the invention can perform a black start test under the condition that the second 220kV line is sent out and the first 220kV line is not powered off, and the black start is recovered to the second 220kV bus at the local side because the charging impact of the short-distance power transmission line smaller than 50km is small, which is equivalent to the recovery of the power supply of the line.
Drawings
FIG. 1 is a schematic diagram of the black start system of the present invention.
FIG. 2 is a schematic diagram of the system before black start according to the present invention.
FIG. 3 is a schematic diagram of the operation of the black start isolation switching device of the present invention.
FIG. 4 is a schematic diagram of the black start strip bus charging of the present invention.
In the figure: a 400V hydraulic generator 1; a safety air switch 2; a second 400V service bus 3; a first 10kV hydro-generator 4; a first outlet circuit breaker 5; a first 10kV disconnecting link 6; a first main transformer 7; a first 220kV circuit breaker 8; a first 220kV disconnecting link 9; a second 220kV bus 10; a first bus coupler knife switch 11; a 220kV buscouple circuit breaker 12; a second bus coupler switch 13; a first 220kV bus 14; a second 220kV disconnecting link 15; a third 400V service bus 16; a first 400V tie switch 17; a first 400V tie switch 18; a first 400V service bus 19; a first 400V knife gate 20; a first 400V switch 21; a second 400V knife gate 22; a first 400V service transformer 23; a second 10kV knife switch 24; a third 10kV knife switch 25; a first 10kV circuit breaker 26; a fourth 10kV knife gate 27; a fifth 10kV knife switch 28; a first house 10kV isolation transformer 29; a second 10kV circuit breaker 30; a sixth 10kV knife switch 31; a first 10kV service bus 32; a seventh 10kV knife switch 33; a third 10kV circuit breaker 34; a backup transformer 35; a second 400V tie switch 36; a second 400V tie switch 37; a third 400V tie switch 38; a third 400V knife gate 39; a second 400V switch 40; a fourth 400V knife gate 41; a second 400V service transformer 42; an eighth 10kV knife switch 43; a ninth 10kV knife gate 44; a fourth 10kV circuit breaker 45; a tenth 10kV knife switch 46; an eleventh 10kV knife gate 47; a second house 10kV isolation transformer 48; a fifth 10kV circuit breaker 49; a twelfth 10kV knife gate 50; a second 10kV service bus 51; a first 10kV tie switch 52; 10kV tie breaker 53; a second 10kV tie switch 54; a second 10kV hydro-generator 55; a second outlet circuit breaker 56; a thirteenth 10kV knife switch 57; a second main transformer 58; a second 220kV circuit breaker 59; a third 220kV knife switch 60; a fourth 220kV knife switch 61; a fifth 220kV knife switch 62; a sixth 220kV knife switch 63; a third 220kV circuit breaker 64; a seventh 220kV knife switch 65; a second 220kV line 66; an eighth 220kV knife switch 67; a ninth 220kV knife gate 68; a fourth 220kV circuit breaker 69; a tenth 220kV knife gate 70; a first 220kV line 71.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention can solve the problems that a diesel generator is required to be used in the black start of the hydropower station, a 400V station water turbine is not configured in the hydropower station at present for black start and the black start test is carried out without power failure of a line.
The invention relates to a hydropower station black start simulation test system and method of a service hydraulic generator, which comprises a 400V hydraulic generator, a second 400V service bus, a first 10kV hydraulic generator, a first main transformer and a second 220kV bus; under the conditions that a second 220kV line is sent out and the first 220kV line cannot be powered off, under the condition that the voltage of a second 220kV bus is completely lost, a first 10kV hydraulic generator set does not depend on any external power supply, only a 400V hydraulic generator set is used for dragging second 400V auxiliary equipment of a factory bus to operate, starting, constant-speed, generator excitation and stator voltage building starting procedures of the first 10kV hydraulic generator set are completed, voltage with stable frequency and correct indication value is built for the second 220kV bus on the local side, the black starting capability of the first 10kV hydraulic generator set is verified, and an environment-friendly black starting power supply can be provided for a power grid; the 400V station-use hydraulic generator can replace a black-start power supply diesel generator, a black-start test is carried out under the condition that a delivery line is not powered off, and the black-start capability required by a power grid is verified under the condition that the hydropower station is powered off.
The invention discloses a hydropower station black start simulation test system of a service hydraulic generator, which comprises a 400V hydraulic generator 1, a safety air switch 2, a second 400V service bus 3, a first 10kV hydraulic generator 4, a first outlet circuit breaker 5, a first 10kV disconnecting link 6, a first main transformer 7, a first 220kV circuit breaker 8, a first 220kV disconnecting link 9 and a second 220kV bus 10, wherein as shown in figure 1; the 400V hydraulic generator 1 is connected with the second 400V station bus 3 through a safety air switch 2, and the first 10kV hydraulic generator 4 is connected with the second 220kV bus 10 through a first outlet circuit breaker 5, a first 10kV disconnecting link 6, a first main transformer 7, a first 220kV circuit breaker 8 and a first 220kV disconnecting link 9 in sequence; the 400V hydraulic generator 1 is used for providing power for an auxiliary machine of a second 400V station bus 3 of the first 10kV hydraulic generator 4.
In the embodiment, the system further comprises a first bus-coupled disconnecting link 11, a 220kV bus-coupled circuit breaker 12, a second bus-coupled disconnecting link 13, a first 220kV bus 14, a second 220kV disconnecting link 15, a third 400V service bus 16, a first 400V interconnection switch 17, a first 400V interconnection disconnecting link 18, a first 400V service bus 19, a first 400V disconnecting link 20, a first 400V switch 21, a second 400V disconnecting link 22, a first 400V service transformer 23 and a second 10kV disconnecting link 24, a third 10kV disconnecting link 25, a first 10kV circuit breaker 26, a fourth 10kV disconnecting link 27, a fifth 10kV disconnecting link 28, a first service 10kV isolation transformer 29, a second 10kV circuit breaker 30, a sixth 10kV disconnecting link 31, a first 10kV service bus 32, a seventh 10kV disconnecting link 33, a third 10kV circuit breaker 34, a standby transformer 35, a second 400V interconnection disconnecting link 36, a second 400V interconnection switch 37, and a third 400V interconnection disconnecting link 38; one end of the first bus-coupled disconnecting link 11 is connected with the second 220kV bus 10, the other end of the first bus-coupled disconnecting link is connected with the first 220kV bus 14 through a 220kV bus-coupled circuit breaker 12 and a second bus-coupled disconnecting link 13, one end of the second 220kV disconnecting link 15 is connected with the first 220kV bus 14, and the other end of the second 220kV disconnecting link is connected with a common point between the first 220kV circuit breaker 8 and the first 220kV disconnecting link 9; the third 400V station service bus 16 is connected with the first 10kV station service bus 32 through a first 400V interconnection switch 17, a first 400V interconnection switch 18, a first 400V station service bus 19, a first 400V disconnecting link 20, a first 400V switch 21, a second 400V disconnecting link 22, a first 400V station transformer 23, a second 10kV disconnecting link 24, a fifth 10kV disconnecting link 28, a first station 10kV isolation transformer 29, a second 10kV circuit breaker 30 and a sixth 10kV disconnecting link 31 in sequence; the first 10kV service bus 32 is sequentially connected with the third 400V service bus 16 through a seventh 10kV disconnecting link 33, a third 10kV circuit breaker 34 and a spare transformer 35, one end of the fourth 10kV disconnecting link 27 is connected with a common point between the first outlet circuit breaker 5 and the first 10kV disconnecting link 6, and the other end of the fourth 10kV disconnecting link 27 is connected with a common point between the second 10kV disconnecting link 24 and the fifth 10kV disconnecting link 28 through the first 10kV circuit breaker 26; one section of the second 400V interconnection disconnecting link 36 is connected with the third 400V service bus 16, and the other end is connected with the second 400V service bus 3 through a second 400V interconnection switch 37 and a third 400V interconnection disconnecting link 38.
In this embodiment, the apparatus further comprises a third 400V disconnecting link 39, a second 400V switch 40, a fourth 400V disconnecting link 41, a second 400V station transformer 42, an eighth 10kV disconnecting link 43, a ninth 10kV disconnecting link 44, a fourth 10kV circuit breaker 45, a tenth 10kV disconnecting link 46, an eleventh 10kV disconnecting link 47, a second station 10kV isolating transformer 48, a fifth 10kV circuit breaker 49, a twelfth 10kV disconnecting link 50, a second 10kV station bus 51, a first 10kV connecting disconnecting link 52, a 10kV connecting circuit breaker 53, a second 10kV connecting disconnecting link 54, a second 10kV water-wheel generator 55, a second outlet circuit breaker 56, a thirteenth 10kV disconnecting link 57, a second main transformer 58, a second 220kV circuit breaker 59, a third 220kV disconnecting link 60, a fourth 220kV disconnecting link 61, a fifth 220kV disconnecting link 62, a sixth 220kV disconnecting link 63, a third 220kV disconnecting link 64, a seventh 220kV disconnecting link 65, a second 220kV circuit breaker 66 kV circuit breaker 220kV circuit breaker, An eighth 220kV disconnecting link 67, a ninth 220kV disconnecting link 68, a fourth 220kV breaker 69, a tenth 220kV disconnecting link 70 and a first 220kV line 71; one end of the third 400V disconnecting link 39 is connected with the second 400V station bus 3, and the other end of the third 400V disconnecting link 39 is connected with the second 10kV station bus 51 through the third 400V disconnecting link 39, the second 400V switch 40, the fourth 400V disconnecting link 41, the second 400V station transformer 42, the eighth 10kV disconnecting link 43, the eleventh 10kV disconnecting link 47, the second station 10kV isolating transformer 48, the fifth 10kV breaker 49 and the twelfth 10kV disconnecting link 50 in sequence; the second 10kV hydro-generator 55 is connected with the second 220kV bus 10 through a second outlet circuit breaker 56, a thirteenth 10kV disconnecting link 57, a second main transformer 58, a second 220kV circuit breaker 59 and a third 220kV disconnecting link 60 in sequence, one end of the fourth 220kV disconnecting link 61 is connected with the first 220kV bus 14, and the other end is connected with a common point between the second 220kV circuit breaker 59 and the third 220kV disconnecting link 60; one end of the third 400V disconnecting link 39 is connected with the second 400V station bus 3, the other end of the third 400V disconnecting link is connected with the second 10kV station bus 51 through a second 400V switch 40, a fourth 400V disconnecting link 41, a second 400V station transformer 42, an eighth 10kV disconnecting link 43, an eleventh 10kV disconnecting link 47, a second station 10kV isolating transformer 48, a fifth 10kV circuit breaker 49 and a twelfth 10kV disconnecting link 50 in sequence, one end of the tenth 10kV disconnecting link 46 is connected with a common point between the second outlet circuit breaker 56 and the thirteenth 10kV disconnecting link 57, and the other end of the tenth 10kV disconnecting link 46 is connected with a common point between the eighth 10kV disconnecting link 43 and the eleventh 10kV disconnecting link 47 through a fourth 10kV circuit breaker 45 and a ninth 10kV disconnecting link 44; one end of the fifth 220kV disconnecting link 62 is connected with the second 220kV bus 10, the other end of the fifth 220kV disconnecting link is connected with the first 220kV bus 14 through a sixth 220kV disconnecting link 63, one end of the third 220kV circuit breaker 64 is connected with a common point between the fifth 220kV disconnecting link 62 and the sixth 220kV disconnecting link 63, and the other end of the third 220kV circuit breaker 64 is connected with the second 220kV line 66 through the third 220kV circuit breaker 64 and a seventh 220kV disconnecting link 65; one end of the eighth 220kV disconnecting link 67 is connected with the second 220kV bus 10, the other end of the eighth 220kV disconnecting link is connected with the first 220kV bus 14 through a ninth 220kV disconnecting link 68, one end of the fourth 220kV breaker 69 is connected with a common point between the eighth 220kV disconnecting link 67 and the ninth 220kV disconnecting link 68, and the other end of the fourth 220kV breaker 69, the tenth 220kV disconnecting link 70 and the first 220kV line 71 are connected.
In this embodiment, the rated output voltage of the 400V hydraulic generator 1 is 400V, the rated output voltage of the first 10kV hydraulic generator 4 is 10.5kV, the transformation ratio of the first main transformer 7 is 242kV/10.5kV, the transformation ratios of the first 400V service transformer 23, the standby transformer 35 and the second 400V service transformer 42 are 10.5kV/0.4kV, and the transformation ratios of the first service 10kV isolation transformer 29 and the second service 10kV isolation transformer 48 are 10.5kV/10.5 kV.
In this embodiment, the parameters of the first 10kV hydro-generator 4 and the second 10kV hydro-generator 55 are as follows:
in this embodiment, the parameters of the first main transformer 7 and the second main transformer 58 are as follows:
in this embodiment, the parameters of the first factory 10kV isolation transformer 29 and the second factory 10kV isolation transformer 48 are as follows:
in this embodiment, the parameters of the first 400V service transformer 23 and the second 400V service transformer 42 are as follows:
in this embodiment, the parameters of the standby transformer 35 are as follows:
as shown in fig. 2, before the first 10kV hydro-generator 4 and the first main transformer 7 with the second 220kV bus 10 are in black start, the security air switch 2, the second 220kV disconnecting link 15, the first 400V interconnection switch 17, the third 10kV circuit breaker 34, the second 400V interconnection switch 37, the 10kV interconnection circuit breaker 53, the third 220kV disconnecting link 60, the sixth 220kV disconnecting link 63, and the eighth 220kV disconnecting link 67 are all in an off state; the first outlet circuit breaker 5, the first 10kV disconnecting link 6, the first 220kV breaker 8, the first 220kV disconnecting link 9, the first female disconnecting link 11, the 220kV female disconnecting link 12, the second female disconnecting link 13, the first 400V connecting disconnecting link 18, the first 400V disconnecting link 20, the first 400V switch 21, the second 400V disconnecting link 22, the second 10kV disconnecting link 24, the third 10kV disconnecting link 25, the first 10kV breaker 26, the fourth 10kV disconnecting link 27, the fifth 10kV disconnecting link 28, the second 10kV breaker 30, the sixth 10kV disconnecting link 31, the seventh 10kV disconnecting link 33, the second 400V connecting disconnecting link 36, the third 400V connecting disconnecting link 38, the third 400V disconnecting link 39, the second 400V switch 40, the fourth 400V disconnecting link 41, the eighth 10kV disconnecting link 43, the ninth 10kV disconnecting link 44, the fourth 10kV disconnecting link 45, the tenth 10kV disconnecting link 46, the eleventh 10kV disconnecting link 47, the twelfth 10kV disconnecting link 49, and the twelfth 10kV disconnecting link 50 kV disconnecting link 49, The first 10kV interconnection knife switch 52, the second 10kV interconnection knife switch 54, the second outlet breaker 56, the thirteenth 10kV knife switch 57, the second 220kV breaker 59, the fourth 220kV knife switch 61, the fifth 220kV knife switch 62, the third 220kV breaker 64, the seventh 220kV knife switch 65, the ninth 220kV knife switch 68, the fourth 220kV breaker 69 and the tenth 220kV knife switch 70 are all in a closed state; first 10kV hydraulic generator 4 and second 10kV hydraulic generator 55 terminal voltage are 10.5kV, second 220kV circuit 66, first 220kV circuit 71 are in the live-line running state, first 10kV factory is with generating line 32, second 10kV factory is with generating line 51 in the live-line running state, second 400V factory is with generating line 3, first 400V factory is with generating line 19, first 400V factory is with transformer 23, second 400V factory is with transformer 42, first factory is with 10kV isolation transformer 29, second factory is with 10kV isolation transformer 48, second 220kV generating line 10, first 220kV generating line 14, first main transformer 7, second main transformer 58 all are in the live-line running state, third 400V factory is with generating line 16, spare transformer 35 in the hot standby state.
As shown in fig. 3, after the first 10kV hydro-generator 4 and the first main transformer 7 have the second 220kV bus 10 to perform black start isolation switching operation, the second 10kV circuit breaker 30, the first 400V switch 21, the first 10kV circuit breaker 26, the second 400V switch 40, the third 400V interconnection switch 38, the first outlet circuit breaker 5, the first 220kV circuit breaker 8, the fifth 220kV switch 62, and the 220kV buscouple circuit breaker 12 are all in an off state; the 10kV interconnection breaker 53, the third 10kV interconnection breaker 34, the first 400V interconnection switch 17 and the sixth 220kV disconnecting link 63 are all in a closed state.
As shown in fig. 4, when the first 10kV hydro-generator 4 and the first main transformer 7 have the second 220kV bus 10 black start test, the terminal voltage of the 400V hydro-generator 1 is stepped up to 400V, and the safety air switch 2, the first outlet circuit breaker 5, and the first 220kV circuit breaker 8 are all in the closed state.
A hydropower station black start simulation test method of a plant hydraulic generator comprises the following steps:
1) carrying out black start isolation switching operation on the first 10kV hydro-generator 4 and the first main transformer 7 with the second 220kV bus 10, and entering the step 2);
2) starting the 400V hydraulic generator 1, building pressure until all of Uab, Uac and Ubc are 400V, the frequency f is 50Hz, measuring and confirming that the phase sequence is correct, and entering step 3);
3) closing the security air switch 2, supplying power to the second 400V service bus 3 by the 400V hydraulic generator 1, and entering the step 4);
4) opening guide vanes of the first 10kV hydraulic generator 4, fixing the speed to 214.3r/min, and entering the step 5);
5) the first 10kV hydraulic generator 4 is provided with a first main transformer for zero start of voltage boosting, the first 10kV hydraulic generator 4 is excited and built for voltage boosting, and the step 6) is carried out;
6) building voltage of the first 10kV hydraulic generator 4 to 20% of rated voltage, and entering the step 7);
7) building voltage of the first 10kV hydraulic generator 4 to 50% of rated voltage, and entering step 8);
8) the first 10kV hydraulic generator 4 builds voltage to 100% rated voltage, the frequency is 50Hz, and the step 9) is carried out;
9) closing the first 220kV circuit breaker 8, wherein the voltage of the second 220kV bus 10 is 220kV, and entering the step 10);
10) and disconnecting the first outlet circuit breaker 5 and the first 220kV circuit breaker 8, and ending the black start test of the first 10kV hydraulic generator 4 and the first main transformer 7 with the second 220kV bus 10.
In this embodiment, 101) checks and confirms that the 10kV interconnection breaker 53 is in an open state, and proceeds to step 102);
102) opening the second 10kV breaker 30 and closing the 10kV tie breaker 53, step 103);
103) opening the first 400V switch 21, closing the third 10kV circuit breaker 34, closing the first 400V tie switch 17, opening the first outlet circuit breaker 5, entering step 104);
104) opening the first 10kV circuit breaker 26, checking to confirm that the second 400V tie switch 37 is in an open state, opening the third 400V tie switch 38, opening the second 400V switch 40, and proceeding to step 105);
105) opening the first 220kV breaker 8, closing the sixth 220kV disconnecting link 63, opening the fifth 220kV disconnecting link 62, and entering step 106);
106) and (3) disconnecting the 220kV bus coupler circuit breaker 12, stopping the first 10kV hydraulic generator 4, enabling the second 400V service bus 3 to have no voltage, enabling the second 220kV bus 10 to have no voltage, and ending the black-start isolation switching operation of the 400V hydraulic generator 1 and the first main transformer 7 with the second 220kV bus 10.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A hydropower station black start simulation test system of a plant hydraulic generator is characterized by comprising a 400V hydraulic generator (1), a second 400V plant bus (3), a first 10kV hydraulic generator (4) and a second 220kV bus (10);
the 400V hydraulic generator (1) is connected with the second 400V service bus (3) through a security air switch (2);
the first 10kV hydraulic generator (4) is connected with the second 220kV bus (10) through a first outlet circuit breaker (5), a first 10kV disconnecting link (6), a first main transformer (7), a first 220kV circuit breaker (8) and a first 220kV disconnecting link (9) in sequence;
the 400V hydraulic generator (1) is used for providing power for an auxiliary machine of a second 400V service bus (3) of the first 10kV hydraulic generator (4).
2. The hydropower station black start simulation test system of the plant hydro-generator according to claim 1, further comprising a first female connection disconnecting link (11), a first 220kV bus (14), a second 220kV disconnecting link (15), a third 400V plant bus (16), a third 10kV disconnecting link (25), a first 10kV circuit breaker (26), a fourth 10kV disconnecting link (27), a first 10kV plant bus (32) and a second 400V connection disconnecting link (36);
one end of the first bus coupler disconnecting link (11) is connected with the second 220kV bus (10), and the other end of the first bus coupler disconnecting link is connected with the first 220kV bus (14) through a 220kV bus coupler circuit breaker (12) and a second bus coupler disconnecting link (13);
one end of the second 220kV disconnecting link (15) is connected with the first 220kV bus (14), and the other end of the second 220kV disconnecting link is connected with a common point between the first 220kV circuit breaker (8) and the first 220kV disconnecting link (9);
the third 400V service bus (16) is connected with the first 10kV service bus (32) through a first 400V service switch (17), a first 400V service disconnecting link (18), a first 400V service bus (19), a first 400V disconnecting link (20), a first 400V switch (21), a second 400V disconnecting link (22), a first 400V service transformer (23), a second 10kV disconnecting link (24), a fifth 10kV disconnecting link (28), a first service 10kV isolation transformer (29), a second 10kV circuit breaker (30) and a sixth 10kV disconnecting link (31) in sequence;
the first 10kV service bus (32) is connected with the third 400V service bus (16) through a seventh 10kV disconnecting link (33), a third 10kV circuit breaker (34) and a spare transformer (35) in sequence;
one end of the fourth 10kV disconnecting link (27) is connected with a common point between the first outlet circuit breaker (5) and the first 10kV disconnecting link (6), and the other end of the fourth 10kV disconnecting link is connected with a common point between the second 10kV disconnecting link (24) and the fifth 10kV disconnecting link (28) through the first 10kV circuit breaker (26);
one section of the second 400V interconnection disconnecting link (36) is connected with the third 400V station bus (16), and the other end of the second 400V interconnection disconnecting link is connected with the second 400V station bus (3) through a second 400V interconnection switch (37) and a third 400V interconnection disconnecting link (38).
3. The hydropower station black start simulation test system of the plant hydro-generator according to claim 2, further comprising a third 400V disconnecting link (39), a tenth 10kV disconnecting link (46), a second 10kV plant bus (51), a first 10kV connecting disconnecting link (52), a 10kV connecting breaker (53), a second 10kV connecting disconnecting link (54), a second 10kV hydro-generator (55), a fourth 220kV disconnecting link (61), a fifth 220kV disconnecting link (62), a third 220kV breaker (64), a second 220kV line (66), an eighth 220kV disconnecting link (67), a fourth 220kV breaker (69) and a first 220kV line (71);
one end of the third 400V disconnecting link (39) is connected with the second 400V station bus (3), and the other end of the third 400V disconnecting link is connected with the second 10kV station bus (51) through a second 400V switch (40), a fourth 400V disconnecting link (41), a second 400V station transformer (42), an eighth 10kV disconnecting link (43), an eleventh 10kV disconnecting link (47), a second station 10kV isolating transformer (48), a fifth 10kV circuit breaker (49) and a twelfth 10kV disconnecting link (50) in sequence;
the second 10kV hydraulic generator (55) is connected with the second 220kV bus (10) through a second outlet circuit breaker (56), a thirteenth 10kV disconnecting link (57), a second main transformer (58), a second 220kV circuit breaker (59) and a third 220kV disconnecting link (60) in sequence;
one end of the fourth 220kV disconnecting link (61) is connected with the first 220kV bus (14), and the other end of the fourth 220kV disconnecting link is connected with a common point between the second 220kV circuit breaker (59) and the third 220kV disconnecting link (60);
one end of the tenth 10kV disconnecting link (46) is connected with a common point between the second outlet circuit breaker (56) and the thirteenth 10kV disconnecting link (57), and the other end of the tenth 10kV disconnecting link is connected with a common point between the eighth 10kV disconnecting link (43) and the eleventh 10kV disconnecting link (47) through the fourth 10kV circuit breaker (45) and the ninth 10kV disconnecting link (44);
one end of the fifth 220kV disconnecting link (62) is connected with the second 220kV bus (10), and the other end of the fifth 220kV disconnecting link is connected with the first 220kV bus (14) through a sixth 220kV disconnecting link (63);
one end of the third 220kV breaker (64) is connected with a common point between the fifth 220kV disconnecting link (62) and the sixth 220kV disconnecting link (63), and the other end of the third 220kV breaker (64) is connected with the second 220kV line (66) through the third 220kV breaker (64) and the seventh 220kV disconnecting link (65);
one end of the eighth 220kV disconnecting link (67) is connected with the second 220kV bus (10), and the other end of the eighth 220kV disconnecting link is connected with the first 220kV bus (14) through a ninth 220kV disconnecting link (68);
one end of the fourth 220kV breaker (69) is connected with the common point between the eighth 220kV disconnecting link (67) and the ninth 220kV disconnecting link (68), and the other end of the fourth 220kV breaker is connected with the first 220kV line (71) through a tenth 220kV disconnecting link (70).
4. The hydropower station black start simulation test system of the service hydro-generator according to claim 3, wherein the rated output voltage of the 400V hydro-generator (1) is 400V, the rated output voltage of the first 10kV hydro-generator (4) is 10.5kV, the transformation ratio of the first main transformer (7) is 242kV/10.5kV, the transformation ratios of the first 400V service transformer (23), the spare transformer (35) and the second 400V service transformer (42) are 10.5kV/0.4kV, and the transformation ratios of the first service 10kV isolation transformer (29) and the second service 10kV isolation transformer (48) are 10.5kV/10.5 kV.
5. The hydropower station black start simulation test system of the plant hydro-generator according to claim 3, wherein before the first 10kV hydro-generator (4) and the first main transformer (7) are black started with the second 220kV bus (10), the safety air switch (2), the second 220kV disconnecting link (15), the first 400V interconnection switch (17), the third 10kV circuit breaker (34), the second 400V interconnection switch (37), the 10kV interconnection circuit breaker (53), the third 220kV disconnecting link (60), the sixth 220kV disconnecting link (63) and the eighth 220kV disconnecting link (67) are all in an off state; the first outlet circuit breaker (5), the first 10kV disconnecting link (6), the first 220kV circuit breaker (8), the first 220kV disconnecting link (9), the first female disconnecting link (11), the 220kV female disconnecting link (12), the second female disconnecting link (13), the first 400V connecting disconnecting link (18), the first 400V disconnecting link (20), the first 400V switch (21), the second 400V disconnecting link (22), the second 10kV disconnecting link (24), the third 10kV disconnecting link (25), the first 10kV circuit breaker (26), the fourth 10kV disconnecting link (27), the fifth 10kV disconnecting link (28), the second 10kV circuit breaker (30), the sixth 10kV disconnecting link (31), the seventh 10kV disconnecting link (33), the second 400V connecting disconnecting link (36), the third 400V connecting disconnecting link (38), the third 400V disconnecting link (39), the second 400V switch (40), the fourth 400V disconnecting link (41), the eighth 10kV disconnecting link (43), A ninth 10kV disconnecting link (44), a fourth 10kV breaker (45), a tenth 10kV disconnecting link (46), an eleventh 10kV disconnecting link (47), a fifth 10kV breaker (49), a twelfth 10kV disconnecting link (50), a first 10kV connecting disconnecting link (52), a second 10kV connecting disconnecting link (54), a second outlet breaker (56), a thirteenth 10kV disconnecting link (57), a second 220kV breaker (59), a fourth 220kV disconnecting link (61), a fifth 220kV disconnecting link (62), a third 220kV breaker (64), a seventh 220kV disconnecting link (65), a ninth 220kV disconnecting link (68), a fourth 220kV breaker (69) and a tenth 220kV disconnecting link (70) are all in a closed state; the terminal voltage of the first 10kV hydraulic generator (4) and the second 10kV hydraulic generator (55) is 10.5kV, the second 220kV line (66) and the first 220kV line (71) are in a live operation state, the first 10kV service bus (32) and the second 10kV service bus (51) are in a live running state, the second 400V station bus (3), the first 400V station bus (19), the first 400V station transformer (23), the second 400V station transformer (42), the first station 10kV isolation transformer (29), the second station 10kV isolation transformer (48), the second 220kV bus (10), the first 220kV bus (14), the first main transformer (7) and the second main transformer (58) are all in a live running state, and the third 400V station bus (16) and the standby transformer (35) are in a hot standby state.
6. The hydropower station black start simulation test system of the plant hydro-generator according to claim 5, wherein after the first 10kV hydro-generator (4) and the first main transformer (7) are operated with the second 220kV bus (10) black start isolation switching, the second 10kV circuit breaker (30), the first 400V switch (21), the first 10kV circuit breaker (26), the second 400V switch (40), the third 400V interconnection knife switch (38), the first outlet circuit breaker (5), the first 220kV circuit breaker (8), the fifth 220kV knife switch (62) and the 220kV bus-interconnection circuit breaker (12) are in an off state; the 10kV interconnection breaker (53), the third 10kV interconnection breaker (34), the first 400V interconnection switch (17) and the sixth 220kV disconnecting link (63) are all in a closed state.
7. The hydropower station black start simulation test system of the plant hydraulic generator according to claim 6, wherein when the first 10kV hydraulic generator (4) and the first main transformer (7) are subjected to black start test with the second 220kV bus (10), the terminal voltage of the 400V hydraulic generator (1) is built up to 400V, and the safety air switch (2), the first outlet circuit breaker (5) and the first 220kV circuit breaker (8) are all in a closed state.
8. A hydropower station black start simulation test method of a plant hydraulic generator is characterized by comprising the following steps:
1) carrying out black start isolation switching operation on the first 10kV hydro-generator (4) and the first main transformer (7) with the second 220kV bus (10), and entering the step 2);
2) starting the 400V hydraulic generator (1), building pressure until Uab, Uac and Ubc are all 400V, frequency f is 50Hz, measuring and confirming that the phase sequence is correct, and entering step 3);
3) closing the safety air switch (2), supplying power to the second 400V service bus (3) by the 400V hydraulic generator (1), and entering the step 4);
4) opening a guide vane of the first 10kV hydraulic generator (4), and fixing the speed to 214.3r/min, and entering the step 5);
5) the first 10kV hydraulic generator (4) is provided with a first main transformer to perform zero-starting voltage boosting, the first 10kV hydraulic generator (4) is excited and built up to perform voltage, and the step 6 is performed;
6) the first 10kV hydraulic generator (4) builds voltage to 20% of rated voltage, and the step 7) is carried out;
7) the first 10kV hydraulic generator (4) builds voltage to 50% of rated voltage, and the step 8) is carried out;
8) the first 10kV hydraulic generator (4) builds voltage to 100% rated voltage, the frequency is 50Hz, and the step 9) is carried out;
9) closing the first 220kV circuit breaker (8), wherein the voltage of the second 220kV bus (10) is 220kV, and entering the step 10);
10) and disconnecting the first outlet circuit breaker (5) and the first 220kV circuit breaker (8), and ending the black start test of the first 10kV hydraulic generator (4) and the first main transformer (7) with the second 220kV bus (10).
9. The hydropower station black start simulation test method of the plant hydro-generator according to claim 8, wherein the step 1) comprises the following steps:
101) checking and confirming that the 10kV tie breaker (53) is in an open state, entering step 102);
102) -opening said second 10kV breaker (30), closing said 10kV tie breaker (53), step 103;
103) -opening the first 400V switch (21), closing the third 10kV circuit breaker (34), closing the first 400V tie switch (17), opening the first outlet circuit breaker (5), go to step 104;
104) opening the first 10kV breaker (26), checking to confirm that the second 400V tie switch (37) is in an open state, opening the third 400V tie switch (38), opening the second 400V switch (40), and entering step 105;
105) opening the first 220kV breaker (8), closing the sixth 220kV disconnecting link (63), opening the fifth 220kV disconnecting link (62), and entering step 106);
106) and (3) disconnecting the 220kV bus coupler circuit breaker (12), enabling the first 10kV hydraulic generator (4) to be in a shutdown state, enabling the second 400V service bus (3) to have no voltage, enabling the second 220kV bus (10) to have no voltage, and enabling the 400V hydraulic generator (1) and the first main transformer (7) to have the second 220kV bus (10) to carry out black-start isolation switching operation to be finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305829.4A CN112327160A (en) | 2020-11-19 | 2020-11-19 | Hydropower station black start simulation test system and method of plant hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305829.4A CN112327160A (en) | 2020-11-19 | 2020-11-19 | Hydropower station black start simulation test system and method of plant hydraulic generator |
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| CN112327160A true CN112327160A (en) | 2021-02-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116565961A (en) * | 2023-07-07 | 2023-08-08 | 华能澜沧江水电股份有限公司 | One-key starting control method and system for diesel generator with station service bus of hydropower station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116565961A (en) * | 2023-07-07 | 2023-08-08 | 华能澜沧江水电股份有限公司 | One-key starting control method and system for diesel generator with station service bus of hydropower station |
| CN116565961B (en) * | 2023-07-07 | 2023-09-08 | 华能澜沧江水电股份有限公司 | One-key starting control method and system for diesel generator with station service bus of hydropower station |
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