CN113555898B - Island black starting method of high-pressure gas generator set - Google Patents
Island black starting method of high-pressure gas generator set Download PDFInfo
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- CN113555898B CN113555898B CN202110786420.7A CN202110786420A CN113555898B CN 113555898 B CN113555898 B CN 113555898B CN 202110786420 A CN202110786420 A CN 202110786420A CN 113555898 B CN113555898 B CN 113555898B
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- 238000001514 detection method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000000819 phase cycle Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 21
- 230000001105 regulatory effect Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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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
- 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
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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
- H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel generators
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an island black starting method of a high-pressure gas generator set, which relates to the technical field of generator sets, in particular to S1, determining a high-pressure generator set to be started; s2, distributing switches; s3, detecting the state of the unit; s4, starting a low-pressure diesel black start generator set; s5, starting auxiliary equipment of the unit, S6 and finishing the black start mode. According to the island black start method of the high-pressure gas generator set, the low-pressure diesel generator set and an auxiliary transformer low-pressure system power supply in a factory are adopted for parallel operation at the low pressure side so as to solve the problem that the low-pressure diesel generator set and the high-pressure generator set generate power supply parallel operation, a parallel operation control screen is adopted for parallel operation control of the low-pressure black start diesel generator set and the transformer low pressure side, the low-pressure diesel black start generator set and the transformer low pressure side are reversely parallel operation, and the cabinet control screen detects that the transformer low pressure side has voltage, so that parallel operation is effectively realized in time, a load transfer switching flow is smooth, efficiency is high, and influence on a system is small.
Description
Technical Field
The invention relates to the technical field of generator sets, in particular to an island black start method of a high-pressure gas generator set.
Background
The high-pressure gas generator set fully utilizes various natural gas or harmful gas as fuel to generate electricity, power is required to be provided for auxiliary equipment of the high-pressure gas generator set before the high-pressure gas generator set is started, the auxiliary equipment of the high-pressure gas generator set such as an air inlet fan, an air exhaust fan, a high-temperature water circulating water pump, a low-temperature water circulating water pump and the like provide power to enable the high-pressure gas generator set to operate, the generator set with a self-starting function is enabled to be self-started in an electric power system through an island black starting mode, and then the generator set without self-starting capability is driven, so that the recovery operation of the high-pressure gas generator set is achieved.
The existing high-pressure gas generator set needs to realize self-starting through a island black start mode when encountering a power failure condition, but the problem that the current needs to be solved in time is solved because the influence is not caused when the power supply is connected between the low-pressure generator set and the high-pressure generator set.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an island black start method of a high-pressure gas generator set, which solves the problems that the prior high-pressure gas generator set needs to realize self start through an island black start mode when meeting the power failure condition in the background art, but how to realize power supply parallel operation between a low-pressure generator set and a high-pressure generator set does not influence each other at the same time, and is needed to be solved in time at present.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the island black start method of the high-pressure gas generator set comprises the following operation steps:
s1, determining a high-voltage generator set to be started:
firstly, determining a high-voltage generator set to be started, checking the corresponding frame switch position and feeder switch position, and placing the vacuum circuit breakers VCB1-VCB8 of the used set and cabinet at the working position according to the set to be started, wherein the output cabinets 1-3 are locally controlled, and the corresponding output cabinet vacuum circuit breakers VCB17, VCB18 and VCB19 are working positions;
s2, switch distribution:
the wire inlet cabinet of the low-voltage distribution system in the system 1 is remotely controlled, the frame circuit breaker is a working position, the molded case circuit breaker corresponding to the switch of the low-voltage distribution feeder cabinet 431 in the system 1 is a working position and is in a closing state, and the feeder switches in the rest low-voltage distribution systems are arranged in the working position or the testing position according to the requirement;
s3, detecting a unit state:
checking the state of the unit before starting the low-voltage diesel black start generator set, wherein the black start generator set outputs that a power frame breaker is in a working position, a voltage detection signal on a cabinet door, a control signal and a feedback signal knob switch of a low-voltage wire inlet cabinet are arranged in a system 1, and a 432 switch in a low-voltage power distribution system corresponding to the system 2 is arranged in an off position;
s4, starting the low-pressure diesel black start generator set:
the low-voltage diesel black start generator set and the cabinet control screen are provided with three control modes, wherein the automatic mode is selected for automatic control, semi-automatic control and manual control, the cabinet control screen detects that the voltage at the inlet side of the inlet cabinet of the low-voltage distribution system in the system 1 is in a mains supply state, the low-voltage diesel black start generator set is started after 5 seconds, after the voltage of the generator set is stable, the black start and cabinet control screen controls the switch-on 403 switch of the black start output switch cabinet, at the moment, the 401 low-voltage inlet switch in the low-voltage distribution system is in a switch-off state, the cabinet control system detects the working position states of the 431 switch and the 432 switch and whether the switch is switched on or not before the switch-on 403 switch is switched on, and the switch-on 403 switch is strictly forbidden when the two switches are in a switch-on position;
s5, starting auxiliary equipment of the unit:
when the 403 switch is switched on, a bus of the low-voltage distribution system in the system 1 is electrified, and a power supply is sent to an auxiliary power cabinet of the high-voltage generator set through a feeder switch of the low-voltage distribution system so that the high-voltage generator set to be started starts a pre-started fan, a water pump and equipment which needs to be started in advance to work;
s6, completing a black start mode:
after the high-voltage generator set in the system 1 generates electricity, a high-voltage bus in the system 1 is electrified, an output cabinet 1 and a vacuum circuit breaker VCB17 are subjected to transformer electrification after inspection, a wire inlet end of a low-voltage wire inlet cabinet in a low-voltage distribution system in the system 1 is electrified, at the moment, the low-voltage diesel black start generator set is electrified with an upper opening of a low-voltage wire inlet switch detected by a cabinet control panel, after the set detection time, the cabinet control panel adjusts the rotating speed and voltage of the black start generator set, so that the rotating speed and the voltage of the black start generator set are in a phase angle with an upper opening power supply of the low-voltage wire inlet switch in the low-voltage distribution system, the phase sequence is in a condition range of setting parameters of the cabinet control panel, at the moment, the cabinet control panel immediately outputs a closing signal, then the frame circuit breaker corresponding to the 401 low-voltage wire inlet switch is immediately closed, and at the same time, the cabinet control panel slowly transfers the load carried by the low-voltage diesel black start generator set to a low-voltage transformer side power supply used by the low-voltage distribution system to carry the load, when the load carried on the black start generator set is reduced below the set range, the cabinet control panel 403 controls the cabinet to switch to open the corresponding frame circuit breaker immediately, and the black start generator set is immediately started, and the process is completed.
Optionally, in the step S1, the high-voltage generator sets are parallel cabinets 1 to 8 in the system 1.
Optionally, the control modes of the cabinet combining 1 to the cabinet combining 8 are remote control.
Optionally, in step S1, the output cabinet 1-the output cabinet 3 are high-voltage feeder cabinets in the system 1, the system 1 is a high-voltage system, and the system 2 is a low-voltage system.
Optionally, in step S3, the 432 switch in the low-voltage power distribution system is a diesel black-start generator set inverted power transmission molded case circuit breaker in the system 2.
Optionally, in step S4, an automatic mode control and a semiautomatic mode control are performed in three control modes.
Optionally, in the step S4, the same padlock is used between the 431 switch and the 432 switch, so that they cannot work simultaneously.
Optionally, in step S4, when both the 431 switch and the 432 switch are at the closing position, the 403 switch is strictly prohibited from closing, and the closing is not allowed, which belongs to the electrical interlocking control.
Optionally, in step S4, the low-voltage diesel black start generator set is started after a delay time of 5 seconds, where the delay time may be changed in setting.
Optionally, the island black start method of the high-pressure gas generator set is applied to the field of park power plants or factory self-power stations.
The invention provides a island black start method of a high-pressure gas generator set, which has the following beneficial effects:
according to the island black start method of the high-pressure gas generator set, the low-pressure diesel generator set and an auxiliary transformer low-pressure system power supply in a factory are adopted for carrying out low-pressure side parallel operation so as to solve the problem that the low-pressure diesel generator set and the high-pressure generator set generate power supply parallel operation, a parallel cabinet control screen is adopted for carrying out parallel operation control on the low-pressure black start diesel generator set and the transformer low-pressure side, a black start power supply is provided for the low-pressure system through the low-pressure diesel black start generator set and the transformer low-pressure side in a reverse parallel operation mode, when the transformer is electrified and the cabinet control screen detects that the voltage on the transformer low-pressure side is the same, the voltage and the rotating speed of the low-pressure diesel black start generator set are regulated, the parallel operation is carried out on the low-pressure side of the transformer, after the parallel operation is successful, the load carried on the low-pressure diesel generator set is smoothly transferred to the transformer low-pressure side power supply, a diesel generator set switch is separated, and the low-pressure diesel black start generator set is stopped.
Drawings
FIG. 1 is a schematic diagram of the overall flow of the present invention;
FIG. 2 is an enlarged schematic flow chart of FIG. 1A according to the present invention;
FIG. 3 is an enlarged schematic flow chart of the process of FIG. 1B according to the present invention;
FIG. 4 is an enlarged schematic flow chart of the process of FIG. 1C according to the present invention;
FIG. 5 is an enlarged schematic flow chart of the process of FIG. 1D according to the present invention;
FIG. 6 is an enlarged schematic view of the process of FIG. 1 at E according to the present invention;
FIG. 7 is an enlarged schematic view of the process of FIG. 1 at F in accordance with the present invention;
FIG. 8 is an enlarged schematic flow chart of the process G in FIG. 1 according to the present invention;
fig. 9 is an enlarged schematic flow chart at H in fig. 1 according to the present invention.
Detailed Description
Referring to fig. 1 to 9, the present invention provides a technical solution: the island black start method of the high-pressure gas generator set comprises the following operation steps:
s1, determining a high-voltage generator set to be started:
firstly, determining a high-voltage generator set to be started, checking the corresponding frame switch position and feeder switch position, and placing the vacuum circuit breakers VCB1-VCB8 of the used set and cabinet at the working position according to the set to be started, wherein the output cabinets 1-3 are locally controlled, and the corresponding output cabinet vacuum circuit breakers VCB17, VCB18 and VCB19 are working positions;
s2, switch distribution:
the wire inlet cabinet of the low-voltage distribution system in the system 1 is remotely controlled, the frame circuit breaker is a working position, the molded case circuit breaker corresponding to the switch of the low-voltage distribution feeder cabinet 431 in the system 1 is a working position and is in a closing state, and the feeder switches in the rest low-voltage distribution systems are arranged in the working position or the testing position according to the requirement;
s3, detecting a unit state:
checking the state of the unit before starting the low-voltage diesel black start generator set, wherein the black start generator set outputs that a power frame breaker is in a working position, a voltage detection signal on a cabinet door, a control signal and a feedback signal knob switch of a low-voltage wire inlet cabinet are arranged in a system 1, and a 432 switch in a low-voltage power distribution system corresponding to the system 2 is arranged in an off position;
s4, starting the low-pressure diesel black start generator set:
the low-voltage diesel black start generator set and the cabinet control screen are provided with three control modes, wherein the automatic mode is selected for automatic control, semi-automatic control and manual control, the cabinet control screen detects that the voltage at the inlet side of the inlet cabinet of the low-voltage distribution system in the system 1 is in a mains supply state, the low-voltage diesel black start generator set is started after 5 seconds, after the voltage of the generator set is stable, the black start and cabinet control screen controls the switch-on 403 switch of the black start output switch cabinet, at the moment, the 401 low-voltage inlet switch in the low-voltage distribution system is in a switch-off state, the cabinet control system detects the working position states of the 431 switch and the 432 switch and whether the switch is switched on or not before the switch-on 403 switch is switched on, and the switch-on 403 switch is strictly forbidden when the two switches are in a switch-on position;
s5, starting auxiliary equipment of the unit:
when the 403 switch is switched on, a bus of the low-voltage distribution system in the system 1 is electrified, and a power supply is sent to an auxiliary power cabinet of the high-voltage generator set through a feeder switch of the low-voltage distribution system so that the high-voltage generator set to be started starts a pre-started fan, a water pump and equipment which needs to be started in advance to work;
s6, completing a black start mode:
after the high-voltage generator set in the system 1 generates electricity, a high-voltage bus in the system 1 is electrified, an output cabinet 1 and a vacuum circuit breaker VCB17 are subjected to transformer electrification after inspection, a wire inlet end of a low-voltage wire inlet cabinet in a low-voltage distribution system in the system 1 is electrified, at the moment, the low-voltage diesel black start generator set is electrified with an upper opening of a low-voltage wire inlet switch detected by a cabinet control panel, after the set detection time, the cabinet control panel adjusts the rotating speed and voltage of the black start generator set, so that the rotating speed and the voltage of the black start generator set are in a phase angle with an upper opening power supply of the low-voltage wire inlet switch in the low-voltage distribution system, the phase sequence is in a condition range of setting parameters of the cabinet control panel, at the moment, the cabinet control panel immediately outputs a closing signal, then the frame circuit breaker corresponding to the 401 low-voltage wire inlet switch is immediately closed, and at the same time, the cabinet control panel slowly transfers the load carried by the low-voltage diesel black start generator set to a low-voltage transformer side power supply used by the low-voltage distribution system to carry the load, when the load carried on the black start generator set is reduced below the set range, the cabinet control panel 403 controls the cabinet to switch to open the corresponding frame circuit breaker immediately, and the black start generator set is immediately started, and the process is completed.
In step S1, the high-voltage generator sets are the parallel cabinets 1 to 8 in the system 1.
The control modes of the parallel cabinets 1 to 8 are remote control.
In step S1, the output cabinet 1-3 is a high voltage feeder cabinet in the system 1, the system 1 is a high voltage system, and the system 2 is a low voltage system.
In step S3, the 432 switch in the low-voltage power distribution system is a reverse power transmission molded case circuit breaker of the diesel black start generator set in the system 2.
In step S4, automatic mode control and semiautomatic mode control among the three control modes are performed.
In step S4, the same padlock is used between the 431 switch and the 432 switch, so that the 431 switch and the 432 switch cannot work simultaneously.
In step S4, when both the 431 switch and the 432 switch are at the closing position, the 403 switch is strictly forbidden to close, and the closing is not allowed, which belongs to the electrical interlocking control.
In step S4, the low-voltage diesel black start generator set is started after the delay time is 5 seconds, wherein the delay time can be changed in setting.
The island black start method of the high-pressure gas generator set is applied to the field of park power plants or factory self-use power stations.
According to the island black start method of the high-pressure gas generator set, the low-pressure diesel generator set and an auxiliary transformer low-pressure system power supply in a factory are adopted for carrying out low-pressure side parallel operation so as to solve the problem that the low-pressure diesel generator set and the high-pressure generator set generate power supply parallel operation, a parallel cabinet control screen is adopted for carrying out parallel operation control on the low-pressure black start diesel generator set and the transformer low-pressure side, a black start power supply is provided for the low-pressure system through the low-pressure diesel black start generator set and the transformer low-pressure side in a reverse parallel operation mode, when the transformer is electrified and the cabinet control screen detects that the voltage on the transformer low-pressure side is the same, the voltage and the rotating speed of the low-pressure diesel black start generator set are regulated, the parallel operation is carried out on the low-pressure side of the transformer, after the parallel operation is successful, the load carried on the low-pressure diesel generator set is smoothly transferred to the transformer low-pressure side power supply, a diesel generator set switch is separated, and the low-pressure diesel black start generator set is stopped.
In summary, the island black start method of the high-pressure gas generator set comprises the following operation steps:
determining a high-voltage generator set to be started: firstly, determining a high-voltage generator set to be started, checking the corresponding frame switch position and feeder switch position, and placing the vacuum circuit breakers VCB1-VCB8 of the used set and cabinet at the working position according to the set to be started, wherein the output cabinets 1-3 are locally controlled, and the corresponding output cabinet vacuum circuit breakers VCB17, VCB18 and VCB19 are working positions;
switch distribution: the wire inlet cabinet of the low-voltage distribution system in the system 1 is remotely controlled, the frame circuit breaker is a working position, the molded case circuit breaker corresponding to the switch of the low-voltage distribution feeder cabinet 431 in the system 1 is a working position and is in a closing state, and the feeder switches in the rest low-voltage distribution systems are arranged in the working position or the testing position according to the requirement;
and (3) detecting the state of the unit: checking the state of the unit before starting the low-voltage diesel black start generator set, wherein the black start generator set outputs that a power frame breaker is in a working position, a voltage detection signal on a cabinet door, a control signal and a feedback signal knob switch of a low-voltage wire inlet cabinet are arranged in a system 1, and a 432 switch in a low-voltage power distribution system corresponding to the system 2 is arranged in an off position;
starting a low-voltage diesel black start generator set: the low-voltage diesel black start generator set and the cabinet control screen are provided with three control modes, wherein the automatic mode is selected for automatic control, semi-automatic control and manual control, the cabinet control screen detects that the voltage at the inlet side of the inlet cabinet of the low-voltage distribution system in the system 1 is in a mains supply state, the low-voltage diesel black start generator set is started after 5 seconds, after the voltage of the generator set is stable, the black start and cabinet control screen controls the switch-on 403 switch of the black start output switch cabinet, at the moment, the 401 low-voltage inlet switch in the low-voltage distribution system is in a switch-off state, the cabinet control system detects the working position states of the 431 switch and the 432 switch and whether the switch is switched on or not before the switch-on 403 switch is switched on, and the switch-on 403 switch is strictly forbidden when the two switches are in a switch-on position;
starting auxiliary equipment of a unit: when the 403 switch is switched on, a bus of the low-voltage distribution system in the system 1 is electrified, and a power supply is sent to an auxiliary power cabinet of the high-voltage generator set through a feeder switch of the low-voltage distribution system so that the high-voltage generator set to be started starts a pre-started fan, a water pump and equipment which needs to be started in advance to work;
the black start mode is completed: after the high-voltage generator set in the system 1 generates electricity, a high-voltage bus in the system 1 is electrified, an output cabinet 1 and a vacuum circuit breaker VCB17 are subjected to transformer electrification after inspection, a wire inlet end of a low-voltage wire inlet cabinet in a low-voltage distribution system in the system 1 is electrified, at the moment, the low-voltage diesel black start generator set is electrified with an upper opening of a low-voltage wire inlet switch detected by a cabinet control panel, after the set detection time, the cabinet control panel adjusts the rotating speed and voltage of the black start generator set, so that the rotating speed and the voltage of the black start generator set are in phase angles with an upper opening power supply of the low-voltage wire inlet switch in the low-voltage distribution system, the phase sequence and the voltage amplitude are within a condition range of setting parameters of the cabinet, at the moment, the cabinet control panel immediately outputs a closing signal, then the frame circuit breaker corresponding to the 401 low-voltage wire inlet switch is immediately closed, and simultaneously the cabinet control panel slowly transfers the load carried by the low-voltage diesel black start generator set to a low-voltage transformer side power supply used by the low-voltage distribution system to carry the load, when the load carried by the black start generator set is reduced below the set range, the cabinet control panel 403 controls the cabinet switch to be opened, and the frame circuit breaker corresponding to the low-voltage black start generator set is immediately opened, and the system is immediately started;
according to the island black start method of the high-pressure gas generator set, the low-pressure diesel generator set and an auxiliary transformer low-pressure system power supply in a factory are adopted for carrying out low-pressure side parallel operation so as to solve the problem that the low-pressure diesel generator set and the high-pressure generator set generate power supply parallel operation, a parallel cabinet control screen is adopted for carrying out parallel operation control on the low-pressure black start diesel generator set and the transformer low-pressure side, a black start power supply is provided for the low-pressure system through the low-pressure diesel black start generator set and the transformer low-pressure side in a reverse parallel operation mode, when the transformer is electrified and the cabinet control screen detects that the voltage on the transformer low-pressure side is the same, the voltage and the rotating speed of the low-pressure diesel black start generator set are regulated, the parallel operation is carried out on the low-pressure side of the transformer, after the parallel operation is successful, the load carried on the low-pressure diesel generator set is smoothly transferred to the transformer low-pressure side power supply, a diesel generator set switch is separated, and the low-pressure diesel black start generator set is stopped.
Claims (9)
1. A island black start method of a high-pressure gas generator set is characterized in that: the method comprises the following operation steps:
s1, determining a high-voltage generator set to be started:
firstly, determining a high-voltage generator set to be started, checking the corresponding frame switch position and feeder switch position, and placing the vacuum circuit breakers VCB1-VCB8 of the used set and cabinet at the working position according to the set to be started, wherein the output cabinets 1-3 are locally controlled, and the corresponding output cabinet vacuum circuit breakers VCB17, VCB18 and VCB19 are working positions;
s2, switch distribution:
the wire inlet cabinet of the low-voltage distribution system in the system 1 is remotely controlled, the frame circuit breaker is a working position, the molded case circuit breaker corresponding to the switch of the low-voltage distribution feeder cabinet 431 in the system 1 is a working position and is in a closing state, and the feeder switches in the rest low-voltage distribution systems are arranged in the working position or the testing position according to the requirement;
s3, detecting a unit state:
checking the state of the unit before starting the low-voltage diesel black start generator set, wherein the black start generator set outputs that a power frame breaker is in a working position, a voltage detection signal on a cabinet door, a control signal and a feedback signal knob switch of a low-voltage wire inlet cabinet are arranged in a system 1, and a 432 switch in a low-voltage power distribution system corresponding to the system 2 is arranged in an off position;
s4, starting the low-pressure diesel black start generator set:
the low-voltage diesel black start generator set and the cabinet control screen are provided with three control modes, wherein the automatic mode is selected for automatic control, semi-automatic control and manual control, the cabinet control screen detects that the voltage at the inlet side of the inlet cabinet of the low-voltage distribution system in the system 1 is in a mains supply state, the low-voltage diesel black start generator set is started after 5 seconds, after the voltage of the generator set is stable, the black start and cabinet control screen controls the switch-on 403 switch of the black start output switch cabinet, at the moment, the 401 low-voltage inlet switch in the low-voltage distribution system is in a switch-off state, the cabinet control system detects the working position states of the 431 switch and the 432 switch and whether the switch is switched on or not before the switch-on 403 switch is switched on, and the switch-on 403 switch is strictly forbidden when the two switches are in a switch-on position;
s5, starting auxiliary equipment of the unit:
when the 403 switch is switched on, a bus of a low-voltage distribution system in the system 1 is electrified, and a power supply is sent to an auxiliary power cabinet of the high-voltage generator set through a feeder switch of the low-voltage distribution system so as to start a pre-started fan and a water pump of the high-voltage generator set to be started;
s6, completing a black start mode:
after the high-voltage generator set in the system 1 generates electricity, a high-voltage bus in the system 1 is electrified, an output cabinet 1 and a vacuum circuit breaker VCB17 are subjected to transformer electrification after inspection, a wire inlet end of a low-voltage wire inlet cabinet in a low-voltage distribution system in the system 1 is electrified, at the moment, the low-voltage diesel black start generator set is electrified with an upper opening of a low-voltage wire inlet switch detected by a cabinet control panel, after the set detection time, the cabinet control panel adjusts the rotating speed and voltage of the black start generator set, so that the rotating speed and the voltage of the black start generator set are in a phase angle with an upper opening power supply of the low-voltage wire inlet switch in the low-voltage distribution system, the phase sequence is in a condition range of setting parameters of the cabinet control panel, at the moment, the cabinet control panel immediately outputs a closing signal, then the frame circuit breaker corresponding to the 401 low-voltage wire inlet switch is immediately closed, and at the same time, the cabinet control panel slowly transfers the load carried by the low-voltage diesel black start generator set to a low-voltage transformer side power supply used by the low-voltage distribution system to carry the load, when the load carried on the black start generator set is reduced below the set range, the cabinet control panel 403 controls the cabinet to switch to open the corresponding frame circuit breaker immediately, and the black start generator set is immediately started, and the process is completed.
2. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S1, the high-voltage generator sets are the parallel cabinets 1 to 8 in the system 1.
3. The island black start method of a high-pressure gas generator set according to claim 2, wherein: the control modes of the cabinet combining 1 to the cabinet combining 8 are remote control.
4. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S1, the output cabinet 1-3 is a high-voltage feeder cabinet in the system 1, the system 1 is a high-voltage system, and the system 2 is a low-voltage system.
5. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S3, the 432 switch in the low-voltage power distribution system is a reverse power transmission molded case circuit breaker of the diesel black start generator set in the system 2.
6. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S4, the same padlock is used between the 431 switch and the 432 switch, so that the 431 switch and the 432 switch cannot work simultaneously.
7. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S4, when the 431 switch and the 432 switch are both at the closing position, the 403 switch is strictly forbidden to close, and the closing is not allowed, which belongs to the electrical interlocking control.
8. The island black start method of a high-pressure gas generator set according to claim 1, wherein: in the step S4, the low-voltage diesel black start generator set is started after a delay time of 5 seconds, wherein the delay time can be changed in setting.
9. The island black start method of a high-pressure gas generator set according to any one of claims 1 to 8, wherein: the island black start method of the high-pressure gas generator set is applied to the field of park power plants or factory self-use power stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786420.7A CN113555898B (en) | 2021-07-12 | 2021-07-12 | Island black starting method of high-pressure gas generator set |
Applications Claiming Priority (1)
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