CN114137408B - Method and device for testing effectiveness of over-limit tripping function of black module number of valve control system - Google Patents
Method and device for testing effectiveness of over-limit tripping function of black module number of valve control system Download PDFInfo
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- CN114137408B CN114137408B CN202111446688.2A CN202111446688A CN114137408B CN 114137408 B CN114137408 B CN 114137408B CN 202111446688 A CN202111446688 A CN 202111446688A CN 114137408 B CN114137408 B CN 114137408B
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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
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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
- G01R31/3272—Apparatus, systems or circuits therefor
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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
- 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
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Abstract
The invention discloses a method and a device for testing the effectiveness of a 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 a threshold value of over-limit tripping of the number of black modules in the valve control system; running a simulation model, starting a valve control system and an inverter control device, and detecting a black module through the valve control system; when the number of the black modules detected by the valve control system is larger than the threshold value of the threshold value, judging whether the unlocking state of the flexible direct current converter valve is a locking state or not, and judging whether a circuit breaker on an alternating current side line of the flexible direct current converter valve trips or not; when the unlocking state of the flexible direct current converter valve is the locking state and the circuit breaker trips, the over-limit tripping function of the number of the black modules is judged to be normal. The invention can objectively test the effectiveness of the over-limit tripping function of the number of the black modules of the valve control system before actual engineering operation.
Description
Technical Field
The invention relates to the technical field of flexible direct current converter valve testing, 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 over-limit tripping function of the number of the black modules of the valve control system of the flexible direct current converter valve is an important function, in the charging process of the flexible direct current converter valve, the valve control system detects the uplink communication state of the power module of the flexible direct current converter valve, the power module with unknown uplink communication interruption state is generally defined as the black module, if the valve control system detects that the number of the black modules exceeds a set value, the flexible direct current converter valve is protected through the over-limit tripping function of the number of the black modules, and the situation that the black module is out of control due to the fact that the valve control system cannot know the uplink communication state of the flexible direct current converter valve when the flexible direct current converter valve is in a charging stage is avoided, and further the accident that the flexible direct current converter valve is damaged is caused.
Therefore, it is necessary to provide a testing method for testing the effectiveness of the over-limit tripping function of the number of the black modules of the valve control system before actual engineering operation, however, in the prior art, no method for testing the effectiveness of the over-limit tripping function of the number of the black modules of the valve control system is available, so that the flexible direct current converter valve cannot be ensured, and when the number of the black modules exceeds a set value in the actual operation process, the flexible direct current converter valve can be effectively tripped in time by the over-limit tripping function of the number of the black modules of the valve control system, thereby protecting the flexible direct current converter valve.
Disclosure of Invention
The invention provides a method and a device for testing the effectiveness of a black module number overrun tripping function of a valve control system, which are used for solving the problem that the prior art does not have a method for testing the effectiveness of the black module number overrun tripping function of the valve control system, and can objectively test the effectiveness of the black module number overrun 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 black module number overrun tripping function 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, and the flexible direct current converter valve is protected.
In order to solve the above technical problems, a first aspect of the present invention provides a method for testing the validity of a black module number overrun tripping function of a valve control system, including:
based on a preset simulation model of the flexible direct current converter valve, disconnecting uplink communication between N power modules in the flexible direct current converter valve and the valve control system, wherein N is as follows>N set ，N set An overrun 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 line 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 threshold value of the threshold value, the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker are obtained, whether the unlocking state of the flexible direct current converter valve is the locking state or not is judged, and whether the circuit breaker trips or not is judged;
and 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.
Preferably, the obtaining the unblocked state of the flexible dc converter valve and the switch state of the circuit breaker on the ac side line of the flexible dc converter valve specifically includes:
receiving, by the valve control system, an unblocked state sent by the flexible dc 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 by the valve control system according to the unlocking state and the switching state respectively, 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, by the valve control system, a black module in the flexible dc converter valve specifically includes:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
Preferably, the testing method further includes, before breaking uplink communications between N power modules in the flexible direct current converter valve and the valve control system based on a preset flexible direct current converter valve simulation model:
constructing a flexible direct current converter valve simulation model by adopting a real-time simulator;
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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
Preferably, the disconnecting the uplink communication optical fibers 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 N power modules in the flexible direct current converter valve and the valve control system.
The second aspect of the embodiment of the invention provides a device for testing the effectiveness of a black module number overrun tripping function of a valve control system, which comprises the following components:
the uplink communication interruption module is used for disconnecting uplink communication between N power modules in the flexible direct current converter valve and the valve control system based on a preset flexible direct current converter valve simulation model, wherein N is>N set ，N set An overrun tripping threshold value for the number of black modules of a preset valve control system;
the black module detection module is used for running the flexible direct current converter valve simulation model, starting the valve control system and the converter control device for controlling the tripping of a circuit breaker arranged on an alternating current side line of the flexible direct current converter valve, 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 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 threshold value of the threshold value, and judging whether the unlocking 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 circuit 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 unblocked state sent by the flexible dc 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 by the valve control system according to the unlocking state and the switching state respectively, 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, by using the valve control system, a black module in the flexible dc converter valve, specifically:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
Preferably, the test device further comprises a simulation model construction module and a communication connection module;
the simulation model construction module is used for constructing 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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
Preferably, the uplink communication interruption module is configured to disconnect uplink communications 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, and specifically is:
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 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 over-limit tripping function of the number of the black modules of the valve control system has the advantages that the effectiveness of the over-limit tripping function of the number of the black modules of the valve control system can be objectively tested before actual engineering operation, the flexible direct current converter valve is ensured to trip in time through the over-limit tripping function of the number 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, and therefore the flexible direct current converter valve is protected.
Drawings
Fig. 1 is a flow chart of a method for testing the effectiveness of a threshold-controlled system black module number overrun tripping function according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for testing the effectiveness of a threshold-controlled system black module number overrun tripping function according to an embodiment of the present 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.
Referring to fig. 1, a first aspect 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 steps S1 to S4, specifically including the following steps:
step S1, based on a preset simulation model of the flexible direct current converter valve, disconnecting uplink communication between N power modules in the flexible direct current converter valve and a valve control system, wherein N is as follows>N set ，N set And (5) exceeding a tripping threshold value for the number of black modules of the preset valve control system.
Specifically, in order to trigger the black module number overrun trip function of the valve control system in the test process, upstream communication between the valve control system and N power modules of any bridge arm of the flexible direct current converter valve in a preset flexible direct current converter valve simulation model needs to be disconnected before the test starts, including direct connection upstream communication and cross upstream communication, where N is the number of the power modules in the flexible direct current converter valve simulation model>N set ，N set And (5) exceeding a tripping threshold value for the number of black modules of the preset valve control system.
It should be noted that, in the embodiment of the present invention, the threshold value of the threshold value for the threshold value is set according to the operation experience of the previous engineering, and is usually 2 to 3.
Preferably, the testing method further includes, before breaking uplink communications between N power modules in the flexible direct current converter valve and the valve control system based on a preset flexible direct current converter valve simulation model:
constructing a flexible direct current converter valve simulation model by adopting a real-time simulator;
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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
It should be noted that, to test such secondary devices as the valve control system before actual engineering operation, a real-time simulation model of an electrical primary system such as a flexible direct current converter valve needs to be built by adopting a real-time simulator such as RT-LAB or RTDS, so as to simulate a real electrical primary system, and then an 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 to realize mutual transmission of data and information between the simulated electrical primary system and the real secondary system, so that the valve control system can send a control command to the real-time simulation model of the electrical primary system, and simultaneously receive state information such as a switch state and a module voltage value sent by the real-time simulation model of the electrical primary system.
Specifically, the embodiment of the invention builds a flexible direct current converter valve simulation model in upper computer software of a real-time simulator by using a component model library of the software. Because the flexible direct current converter valve simulation model, the valve control system and the converter control device are mutually independent, a communication relation needs to be established among the three, 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 the uplink communication optical fibers 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 N power modules in the flexible direct current converter valve and the valve control system.
Specifically, the simulation model of the flexible direct current converter valve 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, and the uplink communication between 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 tripping of a circuit breaker arranged on an alternating current side line of the flexible direct current converter valve, and detecting a black module in the flexible direct current converter valve through the valve control system.
The flexible direct current converter valve simulation model is operated, the valve control system and the converter control device for controlling tripping of a circuit breaker arranged on an alternating current side line 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 a black module in the flexible direct current converter valve is detected through the valve control system.
The uncontrolled charging stage refers to a process from when a breaker on an ac side line of the flexible dc converter valve is closed to start charging, to when the valve control system issues a controllable charging instruction for the flexible dc converter valve, in which the flexible dc converter valve is kept in a closed state.
Preferably, the detecting, by the valve control system, a black module in the flexible dc converter valve specifically includes:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
Specifically, the valve control system detects the uplink communication state of each power module in the flexible direct current converter valve, and because the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system is disconnected 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 through the valve control system, that is, the uplink communication state of the current power module is an interrupt state, and the current power module is used as a black module.
And step S3, when the number of the black modules detected by the valve control system is larger than the threshold value of the threshold value, acquiring the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker, and judging whether the unlocking state of the flexible direct current converter valve is the locking state or not, and whether the circuit breaker trips or not.
Specifically, in order to judge whether the over-limit tripping function of the number of black modules of the valve control system is normal, whether the unblocking state of the flexible direct current converter valve is the blocking state or not and whether the circuit breaker trips or not are needed to be judged, so when the number of the black modules detected by the valve control system is larger than the over-limit tripping threshold value of the number of the black modules of the valve control system, the unblocking state of the flexible direct current converter valve and the switching state of the circuit breaker are obtained, and whether the unblocking state of the flexible direct current converter valve is the blocking state or not and whether the circuit breaker trips or not is judged.
When the number of the black modules detected by the valve control system is larger than the threshold value of the threshold value, if the number of the black modules of the valve control system exceeds the limit tripping function normally, the valve control system will send a latching command to the flexible dc converter valve and a request signal to the converter control device for "black module number overrun request trip". The flexible direct current converter valve is locked after receiving the locking instruction, and the current state of the flexible direct current converter valve is fed back to the valve control system, the 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', and the control unit controls the breaker to trip according to the breaker tripping control instruction and feeds back information of the breaker tripping to the valve control system through the converter control device.
Preferably, the step of obtaining the unblocked state of the flexible dc converter valve and the switching state of the circuit breaker on the ac side line of the flexible dc converter valve specifically includes steps S31 to S33:
step S31 of receiving, by the valve control system, an unblocked state transmitted by the flexible dc converter valve and a switching state of the circuit breaker transmitted by the converter control device;
step S32, generating a first message comprising the unlocking state and a second message comprising the switching state by the valve control system according to the unlocking state and the switching state respectively, and sending the first message and the second message to a background monitoring interface of the valve control system;
and step S33, obtaining 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.
The message refers to a section of text which is displayed on a background monitoring interface of the valve control system and is used for describing information such as the state of the flexible direct current converter valve, fault information, the state of a breaker switch and the like.
And S4, when the unlocking state of the flexible direct current converter valve is a 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 unblocking state of the flexible direct current converter valve is in a blocking state and the circuit breaker trips, the over-limit tripping function of the number of the black modules of the valve control system is effective, the flexible direct current converter valve is successfully blocked and the circuit breaker arranged on an alternating current side line of the flexible direct current converter valve is controlled to trip through executing the function, and the flexible direct current converter valve is ensured to be disconnected with an alternating current side power supply, so that the over-limit tripping function of the number of the black modules of the valve control system is judged to be normal, and the test is passed.
When the unlocking state of the flexible direct current converter valve is an unlocking state or the circuit breaker is not tripped, the valve control system cannot normally execute the over-limit tripping function of the black module number, or the flexible direct current converter valve and/or the circuit breaker cannot normally receive a control instruction and execute corresponding control operation, so that the abnormal over-limit tripping function of the black module number of the valve control system is judged, and the test is failed.
According to the method for testing the validity of the over-limit tripping function of the number of the black modules of the valve control system, the validity of the over-limit tripping function of the number of the black modules of the valve control system can be objectively tested before actual engineering operation, and the flexible direct current converter valve is ensured to be tripped in time through the over-limit tripping function of the number 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, 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 a black module number overrun trip function of a valve control system, including:
an uplink communication interruption module 201, configured to disconnect uplink communications between N power modules and a valve control system in the flexible dc converter valve based on a preset flexible dc converter valve simulation model, where N>N set ，N set An overrun 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, and start the valve control system and a converter control device for controlling tripping of a circuit breaker disposed on an ac side line of the flexible dc converter valve, 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 unblocked state of the flexible dc converter valve and a switch state of the circuit breaker when the number of the black modules detected by the valve control system is greater than the threshold value of the threshold value, and determine whether the unblocked state of the flexible dc converter valve is a blocked state, and whether the circuit breaker trips;
and the test result judging module 204 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 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 unblocked state sent by the flexible dc 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 by the valve control system according to the unlocking state and the switching state respectively, 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, by using the valve control system, a black module in the flexible dc converter valve, specifically:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
Preferably, the test device further comprises a simulation model construction module 205 and a communication connection module 206;
the simulation model construction module 205 is used for constructing a flexible direct current converter valve simulation model by adopting 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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
Preferably, the uplink communication interruption module 201 is configured to disconnect uplink communications between N power modules and the valve control system in the flexible dc converter valve 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 N power modules in the flexible direct current converter valve and the valve control system.
It should be noted that, the device for testing the validity of the threshold-value-controlled system black module number overrun tripping function provided by the embodiment of the present invention can implement all the processes of the method for testing the validity of the threshold-value-controlled system black module number overrun tripping function described in any one of the embodiments, and the functions and the implemented technical effects of each module in the device are respectively the same as those of the method for testing the validity of the threshold-value-controlled system black module number overrun tripping function described in the embodiment, and are not repeated herein.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. A method for testing the effectiveness of a black module number overrun tripping function of a valve control system is characterized by comprising the following steps:
based on a preset simulation model of the flexible direct current converter valve, disconnecting uplink communication between N power modules in the flexible direct current converter valve and the valve control system, wherein N is as follows>N set ，N set An overrun 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 line 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 threshold value of the threshold value, the unlocking state of the flexible direct current converter valve and the switching state of the circuit breaker are obtained, whether the unlocking state of the flexible direct current converter valve is the locking state or not is judged, and whether the circuit breaker trips or not is judged;
when the unlocking state of the flexible direct current converter valve is a locking state and the circuit breaker trips, judging that the black module number overrun tripping function of the valve control system is normal;
the detecting, by the valve control system, the black module in the flexible direct current converter valve specifically includes:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
2. The method for testing the effectiveness of the over-limit trip function of the number of black modules of the valve control system according to claim 1, wherein the step of obtaining the unblocked 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 comprises the following steps:
receiving, by the valve control system, an unblocked state sent by the flexible dc 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 by the valve control system according to the unlocking state and the switching state respectively, 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 a black module count overrun trip function of a valve control system according to claim 1, wherein the method for testing the effectiveness of the black module count overrun trip function of the valve control system further comprises, before breaking uplink communications between N power modules in the flexible dc converter valve and the valve control system based on a predetermined flexible dc converter valve simulation model:
constructing a flexible direct current converter valve simulation model by adopting a real-time simulator;
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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
4. The method for testing the effectiveness of the over-limit tripping function of the number of black modules of the valve control system according to claim 3, 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 a preset simulation model of the flexible direct current converter valve is specifically as follows:
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 N power modules in the flexible direct current converter valve and the valve control system.
5. The utility model provides a testing arrangement of valve control system black module number overrun tripping operation function validity which characterized in that includes:
the uplink communication interruption module is used for disconnecting uplink communication between N power modules in the flexible direct current converter valve and the valve control system based on a preset flexible direct current converter valve simulation model, wherein N is>N set ，N set An overrun tripping threshold value for the number of black modules of a preset valve control system;
the black module detection module is used for running the flexible direct current converter valve simulation model, starting the valve control system and the converter control device for controlling the tripping of a circuit breaker arranged on an alternating current side line of the flexible direct current converter valve, 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 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 threshold value of the threshold value, and judging whether the unlocking state of the flexible direct current converter valve is the locking state or not and whether the circuit breaker is tripped or not;
the test result judging module is used for judging that the number of the black modules of the valve control system exceeds the limit tripping function normally when the unlocking state of the flexible direct current converter valve is a locking state and the circuit breaker trips;
the black module detection module is used for detecting a black module in the flexible direct current converter valve through the valve control system, and specifically comprises the following components:
and detecting the uplink communication state of each power module in the flexible direct current converter valve through the valve control system, and taking the current power module as a black module when the valve control system detects that the uplink communication state of the current power module is in an interruption state.
6. The device for testing the validity of the over-limit tripping function of the number of the black modules of the valve control system according to claim 5, wherein the status information obtaining module is configured to obtain the unblocking status of the flexible direct current converter valve and the switching status of the circuit breaker, and specifically comprises:
receiving, by the valve control system, an unblocked state sent by the flexible dc 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 by the valve control system according to the unlocking state and the switching state respectively, 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.
7. The device for testing the effectiveness of the over-limit tripping function of the black module number of the valve control system according to claim 5, wherein the device for testing further comprises a simulation model construction module and a communication connection module;
the simulation model construction module is used for constructing 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;
connecting the valve control system with the converter control device through an uplink communication optical fiber and a downlink communication optical fiber;
the interface device of the real-time simulator is connected with the converter control device through a communication cable.
8. The device for testing the effectiveness of the over-limit tripping function of the number of black modules of the valve control system according to claim 7, wherein the uplink communication interruption module is used for interrupting the uplink communication between the N power modules in the flexible direct current converter valve and the valve control system based on a preset simulation model of the flexible direct current converter valve, specifically comprising:
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 N power modules in the flexible direct current converter valve and the valve control system.
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