CN112910004B - Method for synthesizing manual shutdown signal and accident shutdown signal of 600MW thermal generator set - Google Patents
Method for synthesizing manual shutdown signal and accident shutdown signal of 600MW thermal generator set Download PDFInfo
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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
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- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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Abstract
The invention discloses a method for synthesizing manual shutdown signals and accident shutdown signals of a 600MW thermal generator set; the method comprises the following steps: s11, boosting electric energy generated by a 600MW generator to 500kV through a No. 5 main transformer; s12, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent, any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position; s13, receiving a circuit breaker 5065 closing signal, and resetting the RS trigger to a 'unit manual shutdown signal'; s14, when a 'unit manual shutdown signal' is not sent, a 'space maintenance pressing plate' is not put in, any one of two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in a combined position, a circuit breaker 5065 split signal is received, and an RS trigger sends a 'unit accident shutdown signal'; the technical scheme of the invention can effectively improve the accuracy of fault warning of the high-capacity unit and accelerate the accident positioning and analysis of power grid dispatching operators on duty.
Description
Technical Field
The invention belongs to the technical field of remote transmission signals output by a control system of a thermal power generating unit, and particularly relates to a method for synthesizing a manual shutdown signal and an accident shutdown signal of a 600MW thermal power generating unit.
Background
When abnormal shutdown occurs in the operation of the generating set, the line, the main transformer and other equipment of the power plant, an accident total signal is generated. The accident alarm is generated when the accident happens to the power plant, the accident total signal is sent to the dispatching master station through the telemechanical device, and the dispatching master station pushes pictures and starts alarm sounds according to the accident total signal. The total accident signal includes: the interval accident signals and the total accident signals of the whole plant are used for identifying the manual shutdown mode commonly adopted by the current power plant, the safety shutdown is realized by means of program reverse power protection action, and the manual shutdown signals are required to be added. The accident total signal is a sign signal for the shift of work to accident handling and is required to be correct, reliable and quick. At present, most power plants only have 'accident total signals', and the protection signals used by all the power plants are not unified in standardization and are not unified by the simple synthesis of the protection action signals 'logical OR' in the power plants, so that the judgment of dispatching operators is affected, and along with the increase of the installed capacity of a power grid and the further improvement of the automation level, the shutdown attribute of the power generator set is automatically sent to corresponding dispatching operators on duty when the thermal generator set running on the grid is separated and shutdown, thereby being beneficial to the dispatching operators on duty to quickly perform accident positioning and analysis and ensuring the safe and stable operation of the power grid, and various manual shutdown signals and accident shutdown signals of the thermal generator sets on the market still have various problems.
The method for judging the abnormal shutdown signal of the power plant equipment disclosed by the authority bulletin No. CN111769525A is used for realizing the aim of ensuring that the total accident signal can be correctly reported under various working conditions and eliminating the false alarm and missing alarm conditions, wherein the total judgment condition synthesis of line switch interval accidents, the total judgment condition synthesis of main transformer switch interval accidents, the total judgment condition synthesis of generator interval accidents, the total judgment condition synthesis of starting and standby switch interval accidents and the total judgment condition synthesis of bus-tie interval accidents solve the problems that the prior various working conditions cannot be accurately reported and the false alarm frequently occur, but do not solve the problems that the conventional thermal generator set running on a network is separated and shutdown, and the shutdown attribute needs to be manually reported to a power grid dispatching attendant. The method is limited by factors such as personnel technical level, can not meet the requirements of rapidness and accuracy, and can influence the judgment and treatment of power grid dispatching operators on duty to a certain extent, so that the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set is provided.
Disclosure of Invention
The invention aims to provide a method for synthesizing a manual shutdown signal and an accident shutdown signal of a 600MW thermal generator set, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set comprises the following steps that electric energy generated by a 600MW generator passes through a No. 5 main transformer and electric energy generated by the 600MW generator passes through a No. 6 main transformer, and the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set runs through the No. 5 main transformer:
the electric energy generated by the S11 and 600MW generator is boosted to 500kV through a No. 5 main transformer and can be respectively sent to a first section bus and a second section bus of 500kV through a circuit breaker 5065;
s12, when the active load of the generator set is smaller than 100MW and the MFT action signal of the boiler is sent out, after the expansion is carried out for 60 seconds, two blades 50651 and 50652 on the bus side of the circuit breaker 5065 are located at any position;
s13, when any one of two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, receiving a combined position signal of the circuit breaker 5065, and resetting the 'unit manual shutdown signal' by an RS trigger and keeping;
s14, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, the circuit breaker 5065 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the delay is automatically reset after 15 seconds, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being wrongly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
Preferably, the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set is operated by a No. 6 main transformer and comprises the following steps:
the electric energy generated by the S21 and 600MW generator is boosted to 500kV through a No. 6 main transformer, and can be respectively sent to a 500kV three-section bus and a four-section bus through a circuit breaker 5066;
s22, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent out, after the expansion is carried out for 60 seconds, two blades 50663 and 50664 on the bus side of the circuit breaker 5066 are located at any position;
s23, when any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, receiving a combined position signal of the circuit breaker 5066, and resetting the RS trigger to a 'manual machine set shutdown signal', and keeping;
s24, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, the circuit breaker 5066 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the 15 seconds of delay is automatically reset, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being mistakenly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
Preferably, the unit manual shutdown signal is sent out after the active load of the generator unit is smaller than 100MW and the boiler MFT action signal is combined and tidied.
Preferably, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is combined after receiving a signal that the active load of the generator set is less than 100MW and a combined signal of the boiler MFT action signal.
Preferably, the circuit breaker 5066 combining signal is combined with the combining signals of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066, and the signal with the active load smaller than 100MW of the generator set and the combined and consolidated signal of the boiler MFT action signal are combined together to trigger the manual shutdown signal of the set.
Preferably, the interval overhaul pressing plate is put into use when the manual shutdown signal triggers the manual shutdown signal of the unit after being sent out.
Preferably, the unit accident shutdown signal is generated when the manual shutdown signal is not generated and the interval maintenance pressing plate is not used, and at this time, the circuit breaker 5066 close signal and the two blades 50663 and 50664 close signals on the bus side of the circuit breaker 5066 and the accident shutdown signal for transmission are combined together when the manual shutdown signal is not generated and the interval maintenance pressing plate is not used and combined and arranged signals are combined together so as to trigger the accident shutdown signal.
Preferably, the unit accident shutdown signal is delayed for three seconds after being generated and then returned to the RS trigger for judgment.
Preferably, the control method of the electric energy generated by the 600MW generator through the unit manual shutdown signal of the No. 5 main transformer is the same as that of the electric energy generated by the 600MW generator through the No. 6 main transformer.
Preferably, the unit accident shutdown signal of the electric energy generated by the 600MW generator through the No. 5 main transformer is the same as the control method of the electric energy generated by the 600MW generator through the No. 6 main transformer.
Compared with the prior art, the invention has the beneficial effects that:
according to the technical scheme, when the thermal generator set is normally shut down and standby, when the load of the set is less than 100MW, a 'set manual shutdown signal' is automatically sent to a power grid dispatching operator, and the set manual shutdown signal is maintained; and automatically resetting the previously transmitted 'manual shutdown signal of the unit' after the unit is started and connected. If the unit trips abnormally due to a certain sudden fault, a unit accident stop signal is automatically sent to a power grid dispatching attendant, and the unit is automatically reset after 15 seconds. The fault alarm accuracy of the high-capacity unit can be effectively improved, the accident positioning and analysis of power grid dispatching operators on duty can be accelerated, the practicability level of the comprehensive intelligent alarm function of dispatching can be improved, and the safe and stable operation of the power grid can be ensured.
Drawings
FIG. 1 is a schematic diagram of an electrical sequential wiring structure of a generator transformer bank of the present invention;
FIG. 2 is a schematic diagram of a synthetic logic structure of an artificial shutdown signal of the machine set according to the present invention;
FIG. 3 is a schematic diagram of a logic structure for synthesizing an accident shutdown signal of the unit;
FIG. 4 is a schematic diagram of the steps of the manual shutdown signal synthesis and the unit accident shutdown signal synthesis of the main transformer unit No. 5 of the invention;
fig. 5 is a schematic diagram of steps of manual shutdown signal synthesis and unit accident shutdown signal synthesis of the main transformer unit No. 6 of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 5, the invention provides a method for synthesizing an artificial shutdown signal and an accident shutdown signal of a 600MW thermal generator set, which comprises the following steps that electric energy generated by a 600MW generator passes through a No. 5 main transformer and electric energy generated by the 600MW generator passes through a No. 6 main transformer, and the method for synthesizing the artificial shutdown signal and the accident shutdown signal of the 600MW thermal generator set runs through the No. 5 main transformer:
the electric energy generated by the S11 and 600MW generator is boosted to 500kV through a No. 5 main transformer and can be respectively sent to a first section bus and a second section bus of 500kV through a circuit breaker 5065;
s12, when the active load of the generator set is smaller than 100MW and the MFT action signal of the boiler is sent out, after the expansion is carried out for 60 seconds, two blades 50651 and 50652 on the bus side of the circuit breaker 5065 are located at any position;
s13, when any one of two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, receiving a combined position signal of the circuit breaker 5065, and resetting the 'unit manual shutdown signal' by an RS trigger and keeping;
s14, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, the circuit breaker 5065 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the delay is automatically reset after 15 seconds, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being wrongly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
In order to realize the control operation of the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set through the No. 6 main transformer, in this embodiment, preferably, the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set through the No. 6 main transformer comprises the following steps:
the electric energy generated by the S21 and 600MW generator is boosted to 500kV through a No. 6 main transformer, and can be respectively sent to a 500kV three-section bus and a four-section bus through a circuit breaker 5066;
s22, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent out, after the expansion is carried out for 60 seconds, two blades 50663 and 50664 on the bus side of the circuit breaker 5066 are located at any position;
s23, when any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, receiving a combined position signal of the circuit breaker 5066, and resetting the RS trigger to a 'manual machine set shutdown signal', and keeping;
s24, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, the circuit breaker 5066 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the 15 seconds of delay is automatically reset, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being mistakenly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
In this embodiment, preferably, the unit manual shutdown signal is sent out after the active load of the generator set is less than 100MW and the boiler MFT action signal is combined and consolidated by the signal of the active load of the generator set less than 100MW and the boiler MFT action signal.
In this embodiment, preferably, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 performs the combination after receiving the signal that the active load of the generator set is less than 100MW and the combined signal of the MFT action signal of the boiler.
In this embodiment, preferably, the combined signal of the circuit breaker 5066 is combined with the combined signals of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066, and the combined and consolidated signal of the generator set active load smaller than 100MW and the boiler MFT action signal, so as to trigger the manual shutdown signal of the set.
In this embodiment, preferably, the interval maintenance pressing plate is put into use when the manual shutdown signal triggers the manual shutdown signal of the unit after being sent out.
In this embodiment, preferably, the unit accident shutdown signal is generated when the manual shutdown signal is not generated and the interval maintenance pressing plate is not used, and at this time, the circuit breaker 5066 combination signal and the two switch blades 50663 and 50664 on the bus side of the circuit breaker 5066 combination signal and the accident shutdown signal for transmission are combined together when the manual shutdown signal is not generated and the interval maintenance pressing plate is not used and combined together so as to trigger the accident shutdown signal.
In this embodiment, preferably, the unit accident shutdown signal is delayed for three seconds after being generated and then returned to the RS trigger for determination.
In this embodiment, preferably, the power generated by the 600MW generator is controlled by the same method as the power generated by the 600MW generator by the 6 th main transformer through the unit manual shutdown signal of the 5 th main transformer.
In this embodiment, preferably, the unit accident shutdown signal of the electric energy generated by the 600MW generator through the No. 5 main transformer is the same as the control method of the electric energy generated by the 600MW generator through the No. 6 main transformer.
The working principle and the using flow of the invention are as follows:
the method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set comprises the following steps of:
the electric energy generated by the S11 and 600MW generator is boosted to 500kV through a No. 5 main transformer and can be respectively sent to a first section bus and a second section bus of 500kV through a circuit breaker 5065;
s12, when the active load of the generator set is smaller than 100MW and the MFT action signal of the boiler is sent out, after the expansion is carried out for 60 seconds, two blades 50651 and 50652 on the bus side of the circuit breaker 5065 are located at any position;
s13, when any one of two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, receiving a combined position signal of the circuit breaker 5065, and resetting the 'unit manual shutdown signal' by an RS trigger and keeping;
s14, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, the circuit breaker 5065 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the delay is automatically reset after 15 seconds, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being wrongly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set comprises the following steps of:
the electric energy generated by the S21 and 600MW generator is boosted to 500kV through a No. 6 main transformer, and can be respectively sent to a 500kV three-section bus and a four-section bus through a circuit breaker 5066;
s22, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent out, after the expansion is carried out for 60 seconds, two blades 50663 and 50664 on the bus side of the circuit breaker 5066 are located at any position;
s23, when any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, receiving a combined position signal of the circuit breaker 5066, and resetting the RS trigger to a 'manual machine set shutdown signal', and keeping;
s24, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, the circuit breaker 5066 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the 15 seconds of delay is automatically reset, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being mistakenly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications and variations may be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set is characterized by comprising the following steps of:
the electric energy generated by the S11 and 600MW generator is boosted to 500kV through a No. 5 main transformer and can be respectively sent to a first section bus and a second section bus of 500kV through a circuit breaker 5065;
s12, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent out, after the expansion is carried out for 60 seconds, controlling any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 to be in the combined position;
s13, when any one of two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, receiving a combined position signal of the circuit breaker 5065, and resetting the 'unit manual shutdown signal' by an RS trigger and keeping;
s14, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50651 and 50652 on the bus side of the circuit breaker 5065 is in the combined position, the circuit breaker 5065 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the delay is automatically reset after 15 seconds, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being wrongly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
2. The method for synthesizing a 600MW thermal generator set manual shutdown signal and an accident shutdown signal according to claim 1, wherein the method for synthesizing the 600MW thermal generator set manual shutdown signal and the accident shutdown signal operates through a No. 6 main transformer, and comprises the following steps:
the electric energy generated by the S21 and 600MW generator is boosted to 500kV through a No. 6 main transformer, and can be respectively sent to a 500kV three-section bus and a four-section bus through a circuit breaker 5066;
s22, when the active load of the generator set is smaller than 100MW and the action signal of the boiler MFT is sent out, after the expansion is carried out for 60 seconds, controlling the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 to be in the combined position;
s23, when any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, receiving a combined position signal of the circuit breaker 5066, and resetting the RS trigger to a 'manual machine set shutdown signal', and keeping;
s24, when a 'unit manual shutdown signal' is not sent, the 'unit interval overhaul pressing plate' is not put into, any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is in the combined position, the circuit breaker 5066 split signal is received again after 3 seconds of delay, the RS trigger sends the 'unit accident shutdown signal', the 15 seconds of delay is automatically reset, the 'unit interval overhaul pressing plate' is added, during the unit interval overhaul, the interval overhaul pressing plate is put into manually, and the 'unit accident shutdown signal' is prevented from being mistakenly sent by the unit interval transmission test, so that the signal is ensured to be triggered correctly.
3. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 2, wherein the method comprises the following steps: the unit manual shutdown signal is generated when the active load of the generator unit is smaller than 100MW and the boiler MFT action signal is sent out, and the signal with the active load smaller than 100MW of the generator unit and the boiler MFT action signal are combined and tidied and then are conveyed out.
4. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 2, wherein the method comprises the following steps: any one of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 is combined after receiving a signal with the active load smaller than 100MW of the generator set and a combined signal of the boiler MFT action signal.
5. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 4, wherein the method comprises the following steps: and the circuit breaker 5066 combining signal is combined with the combining signals of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066, and the signal with the active load smaller than 100MW of the generator set and the combined and tidied signal of the boiler MFT action signal are combined together to trigger the manual shutdown signal of the generator set.
6. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 5, wherein the method comprises the following steps: when the manual shutdown signal triggers the manual shutdown signal of the unit after being sent out, the interval overhaul pressing plate is put into use.
7. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 2, wherein the method comprises the following steps: the unit accident shutdown signal is triggered under the following conditions: the manual shutdown signal is not sent out, the interval overhaul pressure plate is not used, and the circuit breaker 5066 closing signal is combined with the signals obtained by combining and sorting the closing signals of the two blades 50663 and 50664 on the bus side of the circuit breaker 5066 together to trigger the unit accident shutdown signal.
8. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 7, wherein the method comprises the following steps: and the unit accident shutdown signal is delayed for three seconds after being generated and then returned to the RS trigger for judgment.
9. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 1, wherein the method comprises the following steps: the unit manual shutdown signal of the electric energy generated by the 600MW generator through the No. 5 main transformer is the same as the control method of the electric energy generated by the 600MW generator through the No. 6 main transformer.
10. The method for synthesizing the manual shutdown signal and the accident shutdown signal of the 600MW thermal generator set according to claim 1, wherein the method comprises the following steps: the unit accident shutdown signal of the electric energy generated by the 600MW generator through the No. 5 main transformer is the same as the control method of the electric energy generated by the 600MW generator through the No. 6 main transformer.
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| CN111245023A (en) * | 2020-03-24 | 2020-06-05 | 中国能源建设集团广东省电力设计研究院有限公司 | Microgrid parallel-parallel operation switching system and switching method |
| CN112200032A (en) * | 2020-09-28 | 2021-01-08 | 辽宁石油化工大学 | Attention mechanism-based high-voltage circuit breaker mechanical state online monitoring method |
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