CN117674244A

CN117674244A - HCC valve control system and method

Info

Publication number: CN117674244A
Application number: CN202311685021.7A
Authority: CN
Inventors: 马元社; 吴新天; 高奇; 崔斌; 张娟; 王小强; 赵可欣
Original assignee: China XD Electric Co Ltd; Xian XD Power Systems Co Ltd
Current assignee: China Electric Equipment Group Co ltd; China XD Electric Co Ltd; Xian XD Power Systems Co Ltd
Priority date: 2023-12-08
Filing date: 2023-12-08
Publication date: 2024-03-08

Abstract

The application provides an HCC valve control system and method, which can acquire a converter valve phase-change angle signal from a secondary interface signal, and cooperate with a bridge arm current digital signal and a return state signal of an IGCT device to realize the converter failure suppression function of the IGCT converter valve, and can also perform normal state monitoring on the converter valve according to the return state signal, a conduction signal and the bridge arm current digital signal. According to the method and the device, under the condition of minimum change degree, the HCC valve can be replaced by the existing LCC valve, the HCC converter valve is controlled to resist the commutation failure, so that the stability of a power grid can be effectively improved, a large amount of resources are saved, and the economic loss is reduced.

Description

HCC valve control system and method

Technical Field

The application belongs to a control system, and particularly relates to an HCC valve control system and method.

Background

The modern power transmission system consists of a direct current transmission part and an alternating current transmission part which are mutually matched, and in the power transmission process, a converter valve is responsible for completing the mutual conversion between alternating current and direct current, and is core equipment of a direct current transmission project. Commutation failure is a common fault of a conventional LCC converter valve, and continuous commutation failure faults can cause power to drop greatly, which is a serious threat to grid operation. The problem of commutation failure of a conventional power grid converter valve can be solved by adopting a novel commutation technical route. Some flexible commutation technologies are based on fully-controlled devices and flexible commutation topologies, and realize that the on-off of alternating-current side current is controllable, such as a modularized multi-level converter valve and the like. However, the flexible direct current transmission system has higher equipment scale and complexity than the conventional direct current equipment, and has higher cost and limited application. Other methods for solving the commutation failure can also adopt a novel reverse-sequence semiconductor device IGCT with the capability of actively turning off current, and carry out transformation and upgrading on the basis of the original converter valve to form the hybrid commutation HCC converter valve. However, existing LCC valve controls often fail to meet the return signal processing requirements of HCC converter valves.

Disclosure of Invention

An object of the present application is to solve the problems in the prior art and to provide an HCC valve control system and method.

In order to achieve the above purpose, the present application is implemented by adopting the following technical scheme:

in a first aspect, the present application proposes an HCC valve control system, including a sampling conversion module, a main control module, a transmitting module, a logic control module, and a receiving module;

the sampling conversion module is connected with the light CT, is used for sampling bridge arm current and converting the bridge arm current into a bridge arm current digital signal which can be identified by a preset strategy in the main control module;

the receiving module is used for receiving the return state signal of the IGCT device;

the logic control module is used for interacting a secondary interface signal with the polar control and acquiring a converter valve phase-change angle signal and a conduction signal from the secondary interface signal; and returning the opening control signal and the forced commutation command generated by the main control module to the polar control;

the main control module is used for generating an opening control signal for the IGCT according to the return state signal and the conduction signal and in combination with a preset strategy; determining whether to generate a forced commutation command according to the commutation angle signal of the converter valve, the bridge arm current digital signal and the return state signal;

the transmitting module is used for converting the opening control signal and the forced commutation command into optical pulse signals and transmitting the optical pulse signals to the IGCT.

Further, the sampling conversion module, the main control module, the logic control module, the receiving module and the transmitting module are respectively provided with two sampling conversion modules, the main control module, the logic control module, the receiving module and the transmitting module, and are respectively in one-to-one correspondence;

the two sampling conversion modules simultaneously receive bridge arm currents;

the two receiving modules simultaneously receive return state signals of the IGCT device;

the two logic control modules interact secondary interface signals with the polar control at the same time;

the two main control modules determine the main control module in a working state through a secondary interface signal of polar control, and the main control module in the working state generates an opening control signal and a forced commutation command for the IGCT;

and the two emission modules, which correspond to the main control module in a working state, convert the opening control signal and the forced commutation command into optical pulse signals and send the optical pulse signals to the IGCT.

Further, the secondary interface signal for interaction with the pole control comprises:

the HCC valve control secondary interface signal also comprises an active shutoff function abnormality indication signal and a forced commutation command feedback signal;

the HCC valve control secondary interface signal is transmitted in a time division multiplexing and frequency division multiplexing mode, and the converter valve phase-change angle signal and the conduction signal multiplex the same optical fiber.

Further, the logic control module adopts a CLC interface board.

Further, the sampling conversion module comprises an IO board card and an arbitration device;

the arbitration device is used for selecting two light CT from a plurality of light CT of each bridge arm of the converter valve as sampling targets of the two IO plates;

the IO board card collects bridge arm current values, converts the bridge arm current values into bridge arm current digital signals which can be identified by a preset strategy in the main control module, and judges the current rising rate and the positive and negative zero crossing points of the current in real time and sends the current rising rate and the positive and negative zero crossing points to the main control module.

Further, the light emitting module comprises a light emitting plate, an optical fiber and a light distributor;

the emitting plates are in redundant configuration, and three light emitting devices positioned on different light emitting plates realize the control of 12 IGCT devices in the same valve assembly;

the optical distributor is a physical device for dividing 3 paths of control optical pulses from the optical transmitting plate into the same 12 paths of optical signals and transmitting the same 12 paths of optical signals to 12 IGCT devices.

Further, the system also comprises a self-monitoring module;

the self-monitoring module is used for monitoring working states of the sampling conversion module, the main control module, the transmitting module, the logic control module and the receiving module.

Further, the system also comprises an auxiliary monitoring module;

the auxiliary monitoring module is used for monitoring the water leakage condition of the valve tower and the action condition of the lightning arrester, and starting the recording of the secondary interface signal, the return signal, the on signal, the off signal and the current value when the HCC valve control system fails.

Further, the sampling conversion module, the main control module, the transmitting module, the logic control module, the receiving module and the monitoring module are all arranged in the VCM case;

the auxiliary monitoring module is arranged in the VMU case.

In a second aspect, the present application proposes an HCC valve control method comprising:

sampling bridge arm current, and converting the bridge arm current into a bridge arm current digital signal which can be identified by a preset strategy;

receiving a return status signal of the IGCT device;

acquiring a converter valve phase-change angle signal and a conduction signal from the secondary interface signal;

generating an opening control signal for the IGCT according to the return state signal and the conduction signal and combining a preset strategy, converting the opening control signal into an optical pulse signal, and then transmitting the optical pulse signal to the IGCT; determining whether to generate a forced commutation command according to the commutation angle signal of the converter valve, the bridge arm current digital signal and the return state signal, and if so, converting the forced commutation command into an optical pulse signal and then transmitting the optical pulse signal to an IGCT; and returning the generated opening control signal and the forced commutation command to the polar control so that the polar control judges whether the triggering and forced commutation logic of the valve control system is normal or not.

Compared with the prior art, the application has the following beneficial effects:

the application provides an HCC valve control system, can acquire the converter valve phase angle signal from secondary interface signal, cooperate bridge arm electric current digital signal and IGCT device's return status signal, can realize the suppression function of commutation failure, simultaneously, also can carry out normal state monitoring to the converter valve according to return status signal and turn on the signal. According to the method and the device, under the condition of minimum change degree, the HCC valve can be replaced by the existing LCC valve, the HCC converter valve is controlled to resist the commutation failure, so that the stability of a power grid can be effectively improved, a large amount of resources are saved, and the economic loss is reduced.

The application also provides an HCC valve control method, which has all the advantages of the HCC valve control system.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and should therefore not be considered limiting in scope, and that other related drawings can be obtained according to these drawings without the inventive effort of a person skilled in the art.

FIG. 1 is a schematic diagram of a first embodiment of an HCC valve control system according to the present application;

FIG. 2 is a schematic diagram of a second embodiment of an HCC valve control system according to the present application; a step of

FIG. 3 is a schematic diagram of a third embodiment of an HCC valve control system according to the present application;

FIG. 4 is a signal frequency schematic diagram of a converter valve phase change angle signal and the remaining secondary interface signals in an embodiment of an HCC valve control system according to the present application;

FIG. 5 is a schematic diagram of a redundant communication mechanism between an HCC valve control system and an optical CT in an embodiment of the HCC valve control system;

fig. 6 is a timing diagram of a valve-controlled quench commutation failure in an embodiment of an HCC valve-controlled system according to the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present application, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The converter valve is core equipment of direct current transmission engineering, and the main function is to realize conversion between three-phase alternating current and direct current. Thyristors, valve controls and pole controls are important components in converter valves. The thyristor is a main power electronic device in the converter valve, and the on and off of the current are controlled by a trigger signal issued by the valve control system, so that the function of the converter valve is realized, and the alternating current is converted into the direct current or the direct current is converted into the alternating current. The polar control is a logic controller for controlling the converter valve and is used for realizing the directional control of the electric energy.

The thyristor device of the LCC converter valve cannot be actively turned off, current crosses zero in the normal phase conversion process, and the thyristor bears reverse voltage for natural phase conversion. When the voltage of the power grid drops, the thyristor cannot thoroughly turn off the current, and commutation failure can be caused. The HCC converter valve is an IGCT-based converter, and is formed by connecting a plurality of IGCTs in series. HCC converter valves employ more advanced power electronics, have higher voltage and current levels, faster switching speeds, and less losses than LCC converter valves. The IGCT device of the HCC converter valve has an active turn-off function, and can complete phase conversion in an active turn-off mode when the voltage of a power grid drops and the natural phase conversion capability is insufficient. Therefore, the HCC converter valve needs to correspondingly predict the failure fault of the commutation by the HCC valve control, and an active shutdown command is issued to the IGCT in advance, so that the converter valve actively completes the commutation. Based on the above, the application provides an HCC valve control system with the commutation failure inhibition capability, so that the commutation valve has the function of resisting the commutation failure fault.

The present application is described in further detail below with reference to examples and figures.

As shown in fig. 1, as a first embodiment of an HCC valve control system of the present application, a sampling conversion module, a main control module, a transmitting module, a logic control module, and a receiving module may be included.

The sampling conversion module is connected with the light CT, is used for sampling bridge arm current and converting the bridge arm current into bridge arm current digital signals which can be identified by a preset strategy in the main control module. In practical application, the preset strategy can be set according to the required control effect, and the threshold value, the coordination relation and the like of each signal can be set so as to achieve the purpose of control.

And the receiving module is used for receiving the return state signal of the IGCT device.

It should be noted that the return status signal and the turn-on signal issued by the polar control of the IGCT device are both important parts of the IGCT control link. The return state signal is a signal sent by the IGCT device to the valve control system, and is used for indicating the state of the device, such as on, off, etc. Typically generated by circuitry or sensors internal to the IGCT and sent to a valve control system for monitoring and processing. The conduction signal issued by the polar control is used for controlling the conduction and the disconnection of the IGCT device. The valve control equipment generates corresponding pulse according to the conducting signal issued by the polar control and sends the pulse to the driving circuit of the IGCT device for conversion and execution. In practical application, the return state signal and the conduction signal can ensure safe and stable operation of the IGCT device.

The logic control module is used for interacting the secondary interface signal with the polar control and acquiring a converter valve phase-change angle signal and a conduction signal from the secondary interface signal; in addition, the turn-on control signal and the forced commutation command signal generated by the main control module are returned to the polar control through the logic control module.

It should be noted that, the secondary interface signal is used for the interaction control signal in the polar control, and generally includes a trigger pulse signal, a state feedback signal, a fault signal, a protection signal, and the like, from which the converter valve phase-change angle signal can be obtained.

The main control module is used for generating an opening control signal for the IGCT according to the return state signal and the conduction signal and in combination with a preset strategy; and determining whether to generate a forced commutation command according to the commutation angle signal of the converter valve, the bridge arm current digital signal and the return state signal.

The main control module can not only normally control and monitor the converter valve, but also inhibit the failure of the converter.

And the transmitting module is used for converting the opening control signal and the forced commutation command into optical pulse signals and transmitting the optical pulse signals to the IGCT.

As shown in fig. 2, as a second embodiment of the HCC valve control system of the present application, a sampling conversion module, a main control module, a transmitting module, a logic control module, and a receiving module may be included. The sampling conversion module adopts an IO board, the main control module adopts a main control board, the transmitting module adopts a transmitting board, the receiving module adopts a receiving board, and the logic control module adopts a CLC interface board. In practical application, IO board, main control board, transmitting plate, receiving plate and CLC interface board all can set up in VCM quick-witted incasement. The receiving board is mainly responsible for receiving the return state signal of the IGCT device, the main control board mainly generates an opening control signal for the IGCT according to a preset strategy, and the transmitting board mainly is responsible for converting the opening control signal and the forced commutation command into an optical pulse signal and transmitting the optical pulse signal to the IGCT. In addition, the IO board card serving as a current analog quantity acquisition unit can be configured in the system, the IO board can convert the current analog quantity into a digital signal conforming to a strategy, and the digital signal interacts with the main control board through the backboard.

When the HCC valve control system and the converter valve normally operate, the HCC valve control system generates an opening control signal for the IGCT according to a conducting signal issued by the polar control and a return signal returned by the IGCT after unlocking operation. During normal operation, the HCC valve control system monitors the states of all IGCT devices in real time, and when serious faults occur, an alarm signal or a tripping request is generated to the polar control through the logic control module.

It should be noted that, the control signals, such as the on signal, the alarm signal and the trip signal, between the valve control system and the polar control device are collectively referred to as the secondary interface signal, and all interact with the polar control through the CLC interface board. In addition, the secondary interface signal includes both the direction from the polar control to the valve control system and the direction from the valve control system to the polar control. The transmitting module is only connected with the converter valve and has the unique function of converting control signals (on and off) into optical pulse signals to be output.

In practical application, the system also comprises a self-monitoring module for monitoring the working states of the sampling conversion module, the main control module, the transmitting module, the logic control module and the receiving module, namely the self state of the monitoring system, and can also carry out corresponding alarm once serious faults occur.

Regarding the commutation failure suppression function of the HCC valve control system, a logic control module interacts with a polar control to obtain a commutation angle signal of the converter valve from the secondary interface signal, meanwhile, the current state of a bridge arm is monitored in real time through an IO board, a return state signal of the IGCT device is obtained through a receiving board, and whether a forced commutation command is generated or not is determined according to the commutation angle signal of the converter valve, the bridge arm current digital signal and the return state signal, namely, when the commutation failure is judged in the commutation angle, the forced commutation command is issued to the converter valve. In practical application, the acquisition module can communicate with the optical CT on the converter valve through optical fibers to sample bridge arm current in real time. As an example, the optical CT sampling rate is 250kHz, and the communication rate between the optical CT and the IO board may reach 20Mbps.

As shown in fig. 6, in order to implement the HCC valve control to suppress commutation failure function, the present application needs to add a new commutation valve commutation angle signal toff_cp in addition to all secondary interface signals with LCC valve control. To meet the control of a twelve-pulse converter valve control system, twelve corresponding converter valve phase change angle signals toff_cp need to be added, and the signals need to be interacted through optical fibers, however, the addition of the optical fibers can cause the change of a hardware interface between the valve control system and the pole control system, which is not beneficial to the HCC valve control to be connected into the existing pole control-valve control-converter valve control system.

When the converter valve is normally conducted, the pole control protection system can send a conducting signal CP to the valve control system, so that 12 paths of corresponding optical fibers in the twelve-pulse converter valve control system are shared. And in each conduction period of the converter valve, the converter valve enters the phase change angle after the conduction angle is finished, namely, the conduction angle and the phase change angle are not overlapped in time, so that the toff_CP signal corresponding to the single valve can realize optical fiber multiplexing with the CP signal, and the method can greatly improve the reusability of the HCC valve control and LCC valve control secondary interface signal optical fiber system and realize zero change of hardware.

In practical application, the HCC valve control system processes the multiplexed signal using a CLC interface board, which may perform signal processing using a programmable logic chip FPGA. For example, as shown in fig. 4, when the CLC board card monitors that the optical signal frequency on the corresponding optical fiber is 1MHz, it is regarded as the CP signal is valid; when the CLC board card monitors that the frequency of the corresponding optical signal of the optical fiber is 5MHz, the toff_CP signal is considered to be effective. When the CLC interface board interacts with the polar control, the CLC interface board can interact with the interface board in the polar control. The effective frequency of the CP signal in FIG. 4 is 1MHz, the frequency of the CP signal in the small block in the CP signal is 1MHz, and the period is 1us; the effective frequency of the toff_CP signal is 10kHz, the frequency of the toff_CP signal in the small block in the toff_CP signal is 5MHz, and the period is 0.2us. The CLC interface board realizes photoelectric conversion of the secondary interface, and comprises demodulation and coupling of multiplexing signals in the same optical fiber.

As shown in fig. 3, as a third embodiment of the HCC valve control system of the present application, a sampling conversion module, a main control module, a transmitting module, a logic control module, and a receiving module may be included. The sampling conversion module adopts an IO board, the main control module adopts a main control board, the transmitting module adopts a transmitting board, the receiving module adopts a receiving board, and the logic control module adopts a CLC interface board. In practical application, IO board, main control board, transmitting plate, receiving plate and CLC interface board all can set up in VCM quick-witted incasement. Compared to the second embodiment, the difference is that: a redundant communication mechanism is employed between the HCC valve control system and the optical CT. The logic control module, the sampling conversion module, the main control module, the receiving module and the transmitting module are all provided with two, the two sampling conversion modules sample bridge arm currents at the same time, and only one main control module generates an opening control signal for the IGCT at the same time and determines whether to generate a forced commutation command. As shown in fig. 5, taking a single converter valve D1 as an example, 4 light CT acquisition devices are respectively arranged on the upper bridge arm and the lower bridge arm of the converter valve D1, which accords with the "3+1" redundancy design. It should be noted that, the arbitration device is internally provided with a merging unit, the selection logic of the merging unit for the light CT is 3-out-of-2 redundancy design, 4-way light CT is designed on the converter valve, and the 3-out-of-2 design can be satisfied when 1-way light CT fails, namely, the 3+1 redundancy design is realized.

The arbitration device internally carries out '3 and takes 2' logic judgment, and the uplink communication state of the selected 2 paths of light CT enters an A system and a B system (two redundant communication systems between an HCC valve control system and the light CT generally comprise a sampling conversion module and a main control module) in a VCM chassis corresponding to a converter valve D1. The redundant communication mechanism can ensure that the HCC valve control system can still normally sample the bridge arm current of the converter valve when any one path of light CT fails or has communication faults.

In other embodiments of the HCC valve control system of the present application, an auxiliary monitoring module may be further included, for monitoring a water leakage condition of the valve tower and an action condition of the lightning arrester, and starting a recording of the secondary interface signal, the return signal, the on signal, the off signal, and the current value when the HCC valve control system fails. In practical application, the HCC valve control system mainly realizes control and monitoring of the IGCT device of the converter valve, protects the converter valve when the converter valve has serious faults, and can monitor the running state of the converter valve.

As an example, the auxiliary monitoring module is disposed in the VMU chassis, and the whole HCC valve control system adopts a one-sided two-body screen design, corresponding to a 12-pulse converter valve. The screen cabinet contains 5 cabinets with the numbers of 1N-5N. The 1N-4N chassis is a chassis where the sampling conversion module, the main control module, the transmitting module, the logic control module, the receiving module and the monitoring module are located, namely a VCM chassis. The 5N machine case is a VMU machine case and is used for setting an auxiliary monitoring module and is responsible for realizing valve tower water leakage monitoring, lightning arrester action monitoring and wave recording.

In order to verify the effect of the HCC valve control system, RTDS test (Real Time Digital Simulation test, which is a real-time full-digital power system electromagnetic transient simulation test and is mainly used for electrical equipment simulation test) and pattern test authentication are performed, and the test has the function of inhibiting commutation failure:

the method is characterized in that the communication logic of a valve control secondary interface is modified on the basis of the existing LCC valve control, so that the communication logic meets the requirement of a HCC converter valve secondary interface signal, an IO interface board is added in a VCM case, a current acquisition board card is used for simulating ten paths of single-valve light CT devices, the simulated current quantity in RTDS equipment is read, one path of real light CT is used, an external operational amplifier is used, and the current coefficient is amplified according to comparison of a test system and the real working condition. Through RTDS dynamic disturbance test, the HCC valve control system is verified to have the function of inhibiting commutation failure.

Based on the HCC valve control system, the present application further provides an HCC valve control method, including:

(1) Sampling bridge arm current and converting the bridge arm current into a bridge arm current digital signal which can be identified by a preset strategy.

(2) A return status signal of the IGCT device is received.

(3) And acquiring a converter valve phase-change angle signal and a conduction signal from the secondary interface signal.

(4) When the converter valve works normally, the HCC valve control generates an opening control signal of the twelve-pulse converter valve according to the return state of the IGCT device and the conducting signal issued by the polar control, so as to realize the triggering control of the converter valve; when the converter valve is closed and enters a phase conversion stage, the polar control stops sending a closing signal, and then sends a phase conversion angle indication signal, and the valve control system monitors the bridge arm current and the IGCT return state when the phase conversion angle indication signal is effective. When the converter valve normally performs natural phase conversion, the corresponding single valve is normally locked, the bridge arm current and the IGCT return state accord with the normal phase conversion working condition in a preset strategy, and the valve control does not perform treatment; when the commutation failure fault occurs, the bridge arm current change and the IGCT return state signal enter the commutation failure fault state in the preset strategy, and the valve control generates a forced commutation command to be issued to the corresponding single valve to force the corresponding single valve to be blocked, so that the suppression of the commutation failure fault of the converter valve is completed.

In practical applications, steps (1), (2) and (3) are performed at the same time, and corresponding signals are acquired.

It should be noted that, in several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules may be combined or integrated into another apparatus, or some features may be omitted or not performed. The modules described as separate components may or may not be physically separate, and components shown as modules may be one physical unit or multiple physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each module in the embodiments of the present invention may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The above-mentioned valve control method of the present application may be implemented based on an electronic device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the HCC valve control method as described in any of the above embodiments when executing the computer program.

The electronic device provided by the application may further include: the input port is connected with the processor and is used for transmitting the multi-mode data acquired by the external acquisition equipment to the processor; the display unit is connected with the processor and used for displaying the processing result of the processor to the outside; and the communication module is connected with the processor and is used for realizing communication between the electronic equipment and the outside. The display unit may be a display panel, a laser scanning display, or the like; communication modes adopted by the communication module include, but are not limited to, mobile high definition link technology (HML), universal Serial Bus (USB), high Definition Multimedia Interface (HDMI), wireless connection: wireless fidelity (WiFi), bluetooth communication, bluetooth low energy communication, ieee802.11s based communication.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The HCC valve control system is characterized by comprising a sampling conversion module, a main control module, a transmitting module, a logic control module and a receiving module;

2. The HCC valve control system according to claim 1, wherein the sampling conversion module, the main control module, the logic control module, the receiving module, and the transmitting module are all provided in two and correspond one to one respectively;

the two sampling conversion modules simultaneously receive bridge arm currents;

3. The HCC valve control system according to claim 2, wherein the secondary interface signal for interaction with the polar control comprises:

4. The HCC valve control system according to claim 3, wherein the logic control module employs a CLC interface board.

5. The HCC valve control system according to claim 4, wherein the sampling conversion module comprises an IO board and an arbitration device;

6. The HCC valve control system according to claim 5, wherein the transmit module;

the light emitting module comprises a light emitting plate, an optical fiber and a light distributor;

7. The HCC valve control system of claim 6, further comprising a self-monitoring module;

8. The HCC valve control system of claim 7, further comprising a secondary monitoring module;

9. The HCC valve control system according to claim 8, wherein:

the sampling conversion module, the main control module, the transmitting module, the logic control module, the receiving module and the monitoring module are all arranged in the VCM chassis;

the auxiliary monitoring module is arranged in the VMU case.

10. An HCC valving method, comprising:

receiving a return status signal of the IGCT device;