CN114137408A - Method and device for testing effectiveness of black module number overrun tripping function of valve control system - Google Patents

Method and device for testing effectiveness of black module number overrun tripping function of valve control system Download PDF

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Publication number
CN114137408A
CN114137408A CN202111446688.2A CN202111446688A CN114137408A CN 114137408 A CN114137408 A CN 114137408A CN 202111446688 A CN202111446688 A CN 202111446688A CN 114137408 A CN114137408 A CN 114137408A
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China
Prior art keywords
control system
valve control
valve
direct current
flexible direct
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CN202111446688.2A
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Chinese (zh)
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CN114137408B (en
Inventor
毕超豪
徐义良
吴嘉琪
杨柳
陆国俊
周月宾
吴彦伟
薛云涛
王流火
付志超
庞鹏
黄滔
谢榕昌
凌怡珍
熊志武
胡苏凯
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China South Power Grid International Co ltd
Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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China South Power Grid International Co ltd
Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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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
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3275—Fault detection or status indication
    • 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
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a method and a device for testing the effectiveness of the black module number overrun tripping function of a valve control system, wherein the method comprises the following steps: based on a flexible direct current converter valve simulation model, disconnecting uplink communication between N power modules in the flexible direct current converter valve and a valve control system, wherein N is greater than the number overrun trip threshold value of black modules of the valve control system; operating the simulation model, starting the valve control system and the converter control device, and detecting the black module through the valve control system; when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding a tripping threshold value, judging whether the unlocking state of the flexible direct current converter valve is a locking state or not, and whether a breaker on an alternating current side circuit of the flexible direct current converter valve trips or not; and when the unlocking and locking state of the flexible direct current converter valve is the locking state and the breaker trips, judging that the number of the black modules exceeds the limit tripping function to be normal. The invention can objectively test the effectiveness of the black module number overrun tripping function of the valve control system before actual engineering operation.

Description

Method and device for testing effectiveness of black module number overrun tripping function of valve control system
Technical Field
The invention relates to the technical field of testing of flexible direct current converter valves, in particular to a method and a device for testing the effectiveness of a black module number overrun tripping function of a valve control system.
Background
The method comprises the steps that the number of black modules of a valve control system of the flexible direct current converter valve exceeds the limit tripping function, the valve control system detects the uplink communication state of a power module of the flexible direct current converter valve in the charging process of the flexible direct current converter valve, the power module with uncertain uplink communication state is generally defined as the black module, if the number of the black modules detected by the valve control system exceeds a set value, the flexible direct current converter valve is protected through the number of black modules exceeding the limit tripping function, and the phenomenon that the black module is out of control due to the fact that the valve control system cannot know the uplink communication state when the flexible direct current converter valve is in a charging stage, and therefore the flexible direct current converter valve is damaged is avoided.
Therefore, it is necessary to provide a testing method for testing the effectiveness of the number-exceeding tripping function of the black modules of the valve control system before the actual project is put into operation, but there is no method for testing the effectiveness of the number-exceeding tripping function of the black modules of the valve control system in the prior art, so that it cannot be ensured that the flexible direct current converter valve can be tripped in time by the number-exceeding tripping function of the black modules of the valve control system when the number of the black modules exceeds a set value in the actual operation process of the flexible direct current converter valve, thereby protecting the flexible direct current converter valve.
Disclosure of Invention
The invention provides a method and a device for testing the effectiveness of the number-of-black-module over-limit tripping function of a valve control system, which are used for solving the problem that no method for testing the effectiveness of the number-of-black-module over-limit tripping function of the valve control system exists in the prior art, and can objectively test the effectiveness of the number-of-black-module over-limit tripping function of the valve control system before actual engineering operation, so that the flexible direct current converter valve can be effectively tripped in time through the number-of-black-module over-limit tripping function of the valve control system in the actual operation process of the flexible direct current converter valve when the number of black modules exceeds a set value, and the flexible direct current converter valve is protected.
In order to solve the above technical problem, a first aspect of an embodiment of the present invention provides a method for testing the effectiveness of a black module number overrun trip function of a valve control system, including:
disconnecting the flexible direct current converter valve simulation model based on the presettingUplink communication between N power modules and valve control system in flexible direct current converter valve, wherein N is>Nset，NsetExceeding a tripping threshold value for the number of black modules of a preset valve control system;
operating the flexible direct current converter valve simulation model, starting the valve control system and a converter control device for controlling a breaker arranged on an alternating current side circuit of the flexible direct current converter valve to trip, and detecting a black module in the flexible direct current converter valve through the valve control system;
when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding a tripping threshold value, acquiring the unlocking and locking state of the flexible direct current converter valve and the switching state of the circuit breaker, and judging whether the unlocking and locking state of the flexible direct current converter valve is the locking state or not and whether the circuit breaker trips or not;
and when the unlocking and locking state of the flexible direct current converter valve is the locking state and the breaker trips, judging that the black module number overrun tripping function of the valve control system is normal.
Preferably, the acquiring the unlocking state of the flexible dc converter valve and the switching state of the circuit breaker on the ac line of the flexible dc converter valve specifically includes:
receiving, by the valve control system, an unblocking state sent by the flexible direct current converter valve and a switching state of the circuit breaker sent by the converter control device;
generating a first message comprising the unlocking state and a second message comprising the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
Preferably, the detecting of the black module in the flexible direct current converter valve by the valve control system specifically includes:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
Preferably, before disconnecting uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, the test method further includes:
a real-time simulator is adopted to construct a flexible direct current converter valve simulation model;
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
Preferably, the disconnecting of the uplink communication optical fiber between the N power modules and the valve control system in the flexible direct current converter valve based on the preset flexible direct current converter valve simulation model specifically includes:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
The second aspect of the embodiments of the present invention provides a device for testing the effectiveness of the black module number overrun trip function of a valve control system, which includes:
an uplink communication interruption module for interrupting uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, wherein N is>Nset，NsetExceeding a tripping threshold value for the number of black modules of a preset valve control system;
the black module detection module is used for operating the flexible direct current converter valve simulation model, starting the valve control system and a converter control device for controlling a breaker arranged on an alternating current side circuit of the flexible direct current converter valve to trip, and detecting the black module in the flexible direct current converter valve through the valve control system;
the state information acquisition module is used for acquiring the unlocking and locking state of the flexible direct current converter valve and the switching state of the circuit breaker when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding the tripping threshold, and judging whether the unlocking and locking state of the flexible direct current converter valve is the locking state or not and whether the circuit breaker is tripped or not;
and the test result judging module is used for judging that the black module number overrun tripping function of the valve control system is normal when the unlocking state of the flexible direct current converter valve is the locking state and the breaker trips.
Preferably, the state information obtaining module is configured to obtain an unlocking state of the flexible dc converter valve and a switching state of the circuit breaker, and specifically includes:
receiving, by the valve control system, an unblocking state sent by the flexible direct current converter valve and a switching state of the circuit breaker sent by the converter control device;
generating a first message comprising the unlocking state and a second message comprising the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
Preferably, the black module detection module is configured to detect a black module in the flexible dc converter valve through the valve control system, and specifically includes:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
Preferably, the test device further comprises a simulation model building module and a communication connection module;
the simulation model building module is used for building a flexible direct current converter valve simulation model by adopting a real-time simulator;
the communication connection module is used for:
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
Preferably, the uplink communication interruption module is configured to disconnect uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, and specifically includes:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
Compared with the prior art, the method for testing the effectiveness of the black module number overrun tripping function of the valve control system has the advantages that the effectiveness of the black module number overrun tripping function of the valve control system can be objectively tested before actual engineering operation, the flexible direct current converter valve can be effectively tripped in time through the black module number overrun tripping function of the valve control system in the actual operation process when the number of the black modules exceeds a set value, and therefore the flexible direct current converter valve is protected.
Drawings
Fig. 1 is a schematic flow chart of a method for testing the effectiveness of the black module number overrun trip function of the valve control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a testing device for testing the effectiveness of the black module number overrun trip function of the valve control system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a first aspect of the embodiment of the present invention provides a method for testing the effectiveness of the black module number overrun trip function of a valve control system, including steps S1 to S4, which are specifically as follows:
step S1, based on the preset flexible direct current converter valve simulation model, disconnecting the uplink communication between the N power modules and the valve control system in the flexible direct current converter valve, wherein N is>Nset，NsetThe number of black modules of the valve control system is a preset overrun threshold value.
Specifically, in order to trigger the black module number overrun trip function of the valve control system in the test process, before the test is started, the uplink communication between the N power modules of any bridge arm of the flexible direct current converter valve in the preset flexible direct current converter valve simulation model and the valve control system needs to be disconnected, wherein the uplink communication comprises direct connection uplink communication and cross uplink communication, and the N power modules comprise direct connection uplink communication and cross uplink communication>Nset，NsetThe number of black modules of the valve control system is a preset overrun threshold value.
It should be noted that the black module number overrun trip threshold of the valve control system in the embodiment of the present invention is set according to the operation experience of the previous engineering, and the threshold is usually 2 to 3.
Preferably, before disconnecting uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, the test method further includes:
a real-time simulator is adopted to construct a flexible direct current converter valve simulation model;
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
It should be noted that, in order to test the secondary equipment such as the valve control system before the actual engineering operation, a real-time simulator such as RT-LAB or RTDS is required to build a real-time simulation model of the electrical primary system such as the flexible dc converter valve to simulate the real electrical primary system, and then the interface device of the real-time simulator is connected to the valve control system through the uplink communication fiber and the downlink communication fiber to realize the mutual transmission of data and information between the simulated electrical primary system and the real secondary system, so that the valve control system can issue a control command to the real-time simulation model of the electrical primary system and receive the state information, such as the switching state and the module voltage value, sent by the real-time simulation model of the electrical primary system.
Specifically, the embodiment of the invention builds the flexible direct current converter valve simulation model by using a component model library of software in upper computer software of the real-time simulator. Because the flexible direct current converter valve simulation model, the valve control system and the converter control device are independent of each other, a communication relationship needs to be established among the flexible direct current converter valve simulation model, the valve control system and the converter control device, the interface device of the real-time simulator is connected with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber, the valve control system is connected with the converter control device through the uplink communication optical fiber and the downlink communication optical fiber, and the interface device of the real-time simulator is connected with the converter control device through a communication cable such as a DB37 cable.
Preferably, the disconnecting of the uplink communication optical fiber between the N power modules and the valve control system in the flexible direct current converter valve based on the preset flexible direct current converter valve simulation model specifically includes:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
Specifically, the flexible direct current converter valve simulation model is interacted with the valve control system through the communication optical fiber between the interface device of the real-time simulator and the valve control system, so that the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system is disconnected, that is, the uplink communication between the N power modules in the flexible direct current converter valve in the simulation model and the valve control system can be cut off.
And S2, operating the flexible direct current converter valve simulation model, starting the valve control system and a converter control device for controlling a breaker arranged on an alternating current circuit of the flexible direct current converter valve to trip, and detecting a black module in the flexible direct current converter valve through the valve control system.
Specifically, the flexible direct current converter valve simulation model is operated, the valve control system and the converter control device for controlling the tripping of the circuit breaker arranged on the alternating current side circuit of the flexible direct current converter valve are started, the flexible direct current converter valve in the simulation model enters an uncontrolled charging stage, and the black module in the flexible direct current converter valve is detected through the valve control system.
It should be noted that the uncontrolled charging stage refers to a process from the time when a breaker on an ac line of the flexible dc converter valve is switched on to start charging until a controllable charging instruction of the flexible dc converter valve is issued by the valve control system, and in this stage, the flexible dc converter valve is kept in a locked state.
Preferably, the detecting of the black module in the flexible direct current converter valve by the valve control system specifically includes:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
Specifically, the valve control system detects the uplink communication state of each power module in the flexible direct current converter valve, and since the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system is cut off before step S2, when any one of the N power modules is detected, the uplink communication state of the current power module cannot be obtained by the valve control system, that is, the uplink communication state of the current power module is an interrupted state, the current power module is used as a black module.
Step S3, when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding the tripping threshold, obtaining the unlocking state of the flexible direct current converter valve and the switching state of the breaker, and judging whether the unlocking state of the flexible direct current converter valve is the locking state or not and whether the breaker is tripped or not.
Specifically, in order to determine whether the number of black modules of the valve control system exceeds the tripping limit function, it is necessary to determine whether the unlocking state of the flexible dc converter valve is the locking state and whether the circuit breaker trips, and therefore in the embodiment of the present invention, when the number of black modules detected by the valve control system is greater than the number of black modules of the valve control system exceeds the tripping threshold, the unlocking state of the flexible dc converter valve and the switching state of the circuit breaker are obtained, and whether the unlocking state of the flexible dc converter valve is the locking state and whether the circuit breaker trips is determined.
It should be noted that, when the number of the black modules detected by the valve control system is greater than the black module number overrun trip threshold value of the valve control system, if the black module number overrun trip function of the valve control system is normal, the valve control system sends a locking instruction to the flexible direct current converter valve, and sends a request signal of "black module number overrun request trip" to the converter control device. The method comprises the steps that the flexible direct current converter valve is locked after receiving a locking instruction, the flexible direct current converter valve is fed back to a valve control system to be in a current locking state, a converter control device sends a breaker tripping control instruction to a control unit of a breaker arranged on an alternating current side line of the flexible direct current converter valve after receiving a request signal of 'black module number overrun request tripping', the control unit controls the breaker to trip according to the breaker tripping control instruction, and information of the breaker tripping is fed back to the valve control system through the converter control device.
Preferably, the acquiring the unlocking state of the flexible dc converter valve and the switching state of the circuit breaker on the ac line of the flexible dc converter valve specifically includes steps S31 to S33:
a step S31 of receiving, by the valve control system, the unblocking state sent by the flexible dc converter valve and the switching state of the circuit breaker sent by the converter control device;
step S32, generating a first message including the unlocking state and a second message including the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and step S33, acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
It should be noted that the message refers to a segment of text that shows information such as the state of the flexible dc converter valve, fault information, and the state of the breaker switch, which appears on the background monitoring interface of the valve control system.
And step S4, when the unlocking state of the flexible direct current converter valve is the locking state and the circuit breaker trips, judging that the black module number overrun tripping function of the valve control system is normal.
Specifically, when a message on a background monitoring interface of the valve control system shows that the unlocking state of the flexible direct current converter valve is the locking state and the breaker trips, it is indicated that the black module number overrun tripping function of the valve control system is effective, the flexible direct current converter valve is successfully locked and the breaker arranged on the alternating current side circuit of the flexible direct current converter valve is controlled to trip by executing the function, the flexible direct current converter valve is ensured to be disconnected with the alternating current side power supply, therefore, the black module number overrun tripping function of the valve control system is judged to be normal, and the test is passed.
It should be noted that when the unlocking and locking state of the flexible direct current converter valve is the unlocking state or the circuit breaker is not tripped, it is indicated that the valve control system cannot normally execute the black module number overrun tripping function, or the flexible direct current converter valve and/or the circuit breaker cannot normally receive the control instruction and execute the corresponding control operation, so that it is determined that the black module number overrun tripping function of the valve control system is abnormal, and the test does not pass.
The method for testing the effectiveness of the black module number overrun trip function of the valve control system can objectively test the effectiveness of the black module number overrun trip function of the valve control system before actual engineering operation, and ensure that the flexible direct current converter valve can effectively trip the flexible direct current converter valve in time through the black module number overrun trip function of the valve control system when the number of the black modules exceeds a set value in the actual operation process, so that the flexible direct current converter valve is protected.
Referring to fig. 2, a second aspect of the embodiment of the present invention provides a device for testing the effectiveness of the black module number overrun trip function of a valve control system, including:
an uplink communication interruption module 201, configured to disconnect uplink communication between N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, where N is>Nset，NsetExceeding a tripping threshold value for the number of black modules of a preset valve control system;
a black module detection module 202, configured to run the flexible dc converter valve simulation model, start the valve control system and a converter control device for controlling a circuit breaker arranged on an ac line of the flexible dc converter valve to trip, and detect a black module in the flexible dc converter valve through the valve control system;
the state information obtaining module 203 is configured to obtain an unlocking state of the flexible direct current converter valve and a switching state of the circuit breaker when the number of the black modules detected by the valve control system is greater than the number of the black modules in the valve control system, and determine whether the unlocking state of the flexible direct current converter valve is a locking state or not and whether the circuit breaker is tripped or not;
and the test result determining module 204 is configured to determine that the black module number overrun tripping function of the valve control system is normal when the unlocking state of the flexible direct current converter valve is the locking state and the circuit breaker trips.
Preferably, the state information obtaining module 203 is configured to obtain an unlocking state of the flexible dc converter valve and a switching state of the circuit breaker, and specifically includes:
receiving, by the valve control system, an unblocking state sent by the flexible direct current converter valve and a switching state of the circuit breaker sent by the converter control device;
generating a first message comprising the unlocking state and a second message comprising the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
Preferably, the black module detecting module 202 is configured to detect a black module in the flexible dc converter valve through the valve control system, specifically:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
Preferably, the test device further comprises a simulation model building module 205 and a communication connection module 206;
the simulation model building module 205 is configured to build a flexible direct current converter valve simulation model by using a real-time simulator;
the communication connection module 206 is configured to:
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
Preferably, the uplink communication interruption module 201 is configured to disconnect uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, specifically:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
It should be noted that, the testing apparatus for testing the effectiveness of the number-of-black-module overrun function of the valve control system according to the embodiment of the present invention can implement all the processes of the testing method for testing the effectiveness of the number-of-black-module overrun function of the valve control system according to any one of the embodiments, and the functions and the implemented technical effects of each module in the testing apparatus are respectively the same as those of the testing method for testing the effectiveness of the number-of-black-module overrun function of the valve control system according to the embodiment, and are not described herein again.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A method for testing the effectiveness of the black module number overrun tripping function of a valve control system is characterized by comprising the following steps:
based on a preset flexible direct current converter valve simulation model, disconnecting uplink communication between N power modules and a valve control system in the flexible direct current converter valve, wherein N is>Nset，NsetExceeding a tripping threshold value for the number of black modules of a preset valve control system;
operating the flexible direct current converter valve simulation model, starting the valve control system and a converter control device for controlling a breaker arranged on an alternating current side circuit of the flexible direct current converter valve to trip, and detecting a black module in the flexible direct current converter valve through the valve control system;
when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding a tripping threshold value, acquiring the unlocking and locking state of the flexible direct current converter valve and the switching state of the circuit breaker, and judging whether the unlocking and locking state of the flexible direct current converter valve is the locking state or not and whether the circuit breaker trips or not;
and when the unlocking and locking state of the flexible direct current converter valve is the locking state and the breaker trips, judging that the black module number overrun tripping function of the valve control system is normal.
2. The method for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 1, wherein the obtaining of the unblocking state of the flexible direct current converter valve and the switching state of the circuit breaker on the alternating current side line of the flexible direct current converter valve specifically includes:
receiving, by the valve control system, an unblocking state sent by the flexible direct current converter valve and a switching state of the circuit breaker sent by the converter control device;
generating a first message comprising the unlocking state and a second message comprising the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
3. The method for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 2, wherein the black module in the flexible direct current converter valve is detected by the valve control system, and specifically comprises:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
4. The method for testing the effectiveness of the black module number overrun trip function of the valve control system as claimed in claim 3, wherein the testing method further comprises, before disconnecting the uplink communication between the N power modules in the flexible dc converter valve and the valve control system based on a preset flexible dc converter valve simulation model:
a real-time simulator is adopted to construct a flexible direct current converter valve simulation model;
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
5. The method for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 4, wherein the method for disconnecting the uplink communication optical fibers between the N power modules in the flexible direct current converter valve and the valve control system based on the preset flexible direct current converter valve simulation model specifically comprises:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
6. The utility model provides a black module number of valve accuse system overrun trip function validity's testing arrangement which characterized in that includes:
an uplink communication interruption module for interrupting uplink communication between the N power modules and the valve control system in the flexible direct current converter valve based on a preset flexible direct current converter valve simulation model, wherein N is>Nset，NsetExceeding a tripping threshold value for the number of black modules of a preset valve control system;
the black module detection module is used for operating the flexible direct current converter valve simulation model, starting the valve control system and a converter control device for controlling a breaker arranged on an alternating current side circuit of the flexible direct current converter valve to trip, and detecting the black module in the flexible direct current converter valve through the valve control system;
the state information acquisition module is used for acquiring the unlocking and locking state of the flexible direct current converter valve and the switching state of the circuit breaker when the number of the black modules detected by the valve control system is larger than the number of the black modules of the valve control system exceeding the tripping threshold, and judging whether the unlocking and locking state of the flexible direct current converter valve is the locking state or not and whether the circuit breaker is tripped or not;
and the test result judging module is used for judging that the black module number overrun tripping function of the valve control system is normal when the unlocking state of the flexible direct current converter valve is the locking state and the breaker trips.
7. The apparatus for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 6, wherein the state information acquiring module is configured to acquire an unlocking state of the flexible dc converter valve and an opening/closing state of the circuit breaker, and specifically includes:
receiving, by the valve control system, an unblocking state sent by the flexible direct current converter valve and a switching state of the circuit breaker sent by the converter control device;
generating a first message comprising the unlocking state and a second message comprising the switching state according to the unlocking state and the switching state respectively through the valve control system, and sending the first message and the second message to a background monitoring interface of the valve control system;
and acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker according to the first message and the second message displayed on the background monitoring interface.
8. The device for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 7, wherein the black module detection module is used for detecting the black module in the flexible direct current converter valve through the valve control system, and specifically comprises:
and respectively detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and when the uplink communication state of the current power module is detected to be an interrupt state through the valve control system, taking the current power module as a black module.
9. The valve control system black module number overrun trip function effectiveness testing device of claim 8, wherein the testing device further comprises a simulation model building module and a communication connection module;
the simulation model building module is used for building a flexible direct current converter valve simulation model by adopting a real-time simulator;
the communication connection module is used for:
connecting an interface device of the real-time simulator with the valve control system through an uplink communication optical fiber and a downlink communication optical fiber;
the valve control system is connected with a converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
and connecting the interface device of the real-time simulator with the converter control device through a communication cable.
10. The apparatus for testing the effectiveness of the black module number overrun trip function of the valve control system according to claim 9, wherein the uplink communication interruption module is configured to disconnect uplink communication between N power modules in the flexible dc converter valve and the valve control system based on a preset flexible dc converter valve simulation model, specifically:
and disconnecting the uplink communication optical fiber between the interface device of the real-time simulator and the valve control system so as to disconnect the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system.
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