WO2019037728A1 - 一种直流断路器重合闸控制方法及装置、存储介质 - Google Patents

一种直流断路器重合闸控制方法及装置、存储介质 Download PDF

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Publication number
WO2019037728A1
WO2019037728A1 PCT/CN2018/101612 CN2018101612W WO2019037728A1 WO 2019037728 A1 WO2019037728 A1 WO 2019037728A1 CN 2018101612 W CN2018101612 W CN 2018101612W WO 2019037728 A1 WO2019037728 A1 WO 2019037728A1
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electronic switch
preset
switch module
fault current
turned
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PCT/CN2018/101612
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English (en)
French (fr)
Inventor
单云海
魏晓光
高冲
周万迪
张升
李弸智
陈龙龙
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全球能源互联网研究院有限公司
国家电网有限公司
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Publication of WO2019037728A1 publication Critical patent/WO2019037728A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection

Definitions

  • the present application relates to the field of power electronics, and in particular, to a DC circuit breaker reclosing control method and device, and a storage medium.
  • the multi-terminal flexible DC grid technology based on voltage source converter can realize multi-power supply and multi-drop power receiving, and has the characteristics of flexible control, high redundancy and high reliability. It has become a solution for large-scale renewable energy integration and An effective means of consumption, however, DC grids have high requirements for fault response time. Therefore, high-voltage DC circuit breakers are one of the key equipments to ensure stable, safe and reliable operation of flexible DC transmission systems.
  • the existing high-voltage DC circuit breakers are mixed with mechanical switches and fully-controlled power electronic switches, which combine the low-loss characteristics of mechanical switches with the fast breaking characteristics of power electronic switches. It is currently the most effective DC splitting in high-voltage flexible DC transmission systems. In addition to features such as fast and low loss, high current breaking, etc., it also has a fast reclosing capability; most of the transmission line faults applied to flexible multi-terminal DC and DC grids with large-capacity overhead lines are instantaneous. Sexual faults account for about 80% to 90% of the total number of failures. Most of these transient faults are caused by lightning flashovers on the surface of the insulator, discharge from the branches to the branches, hits caused by strong winds, birds and branches, etc.
  • the hybrid DC circuit breaker developed at this stage has the fault of cutting the kiloamperes or more within the millisecond level.
  • the current capability lays a solid foundation for the application of flexible DC power supply technology.
  • the DC circuit breaker is composed of a mechanical switch (K), an isolating knife gate (K1 and K2), a power electronics sub-module (SM) and a lightning arrester (MOV) unit, including 3 parallel branches, main branch 1, transfer branch 2 and energy absorption branch 3, wherein the main branch 1 is composed of a fast mechanical switch K and power electronics in a matrix combination or a series connection or a series connection of the first electron
  • the switch module (Tm) effectively improves the reliability of the steady-state operation and breaking of the DC circuit breaker and reduces the on-state loss during steady-state operation of the hybrid DC circuit breaker;
  • the transfer branch 2 consists of a plurality of at least one series power electronic
  • the second electronic switch modules (S1, S2...Sn) of the device sub-module are formed in series;
  • the energy absorption branch is formed by a plurality of sets of variable resistors, and each group is connected in parallel to each end of the second electronic switch module of the transfer branch; wherein the
  • FIG. 2(a) consists of a set of IGBTs connected in series with another set of IGBTs in anti-series; one implementation is shown in Figure 2(b), consisting of four fully-controlled power electronics IGBTs and buffers. a voltage equalizing branch; an implementation, as shown in FIG. 2(c), consisting of four diodes (Diode) forming a full bridge module, one or more IGBTs connected in parallel and a buffer equalizing branch connected to the full bridge module, Between the lower arms.
  • the buffer equalization branch includes three implementations such as shown in Figure 3.
  • Figure 3(a) contains only one non-linear resistor;
  • Figure 3(b) contains only one damping capacitor C;
  • Figure 3(c) consists of damping resistor R and Damping capacitor C is connected in series with diode D in parallel.
  • the multi-terminal flexible DC grid based on the commutation technology of the voltage source converter usually has a high equivalent capacitive reactance, which is not only from the converter side but also contains the distributed capacitance on the transmission line.
  • a large inrush current from the AC side is caused, in order to suppress the surge current.
  • the peak value is generally increased by adding a resistor to the AC side of the inverter. When the inrush current is suppressed, it is bypassed by the bypass switch. However, if a resistor and a bypass switch are also pre-inserted on the DC side, an extra is added.
  • the high-voltage DC circuit breaker should have the capability of limiting the current limit while ensuring the function of reclosing. It provides effective protection for fast restart of DC system.
  • the technical problem to be solved by the present application is that the existing high voltage DC circuit breaker reclosing control process does not have the capability of current limiting and voltage limiting, and reduces the reliability of the flexible direct current power transmission system operation.
  • a DC circuit breaker reclosing control method including:
  • the second electronic switch module that is not turned on is turned on.
  • the step of determining whether the fault current of the faulty power transmission line is greater than a preset threshold comprises:
  • the method further comprises:
  • the second electronic switch module that is turned on is blocked when the fault current is greater than the predetermined threshold.
  • the method comprises:
  • the rate of change of the fault current in the preset time is still greater than the preset threshold, and controlling to block the second power electronic device module that is turned on again And isolation knife gates.
  • the method further comprises:
  • the rate of change of the fault current in the preset time is not greater than the preset threshold, and the second electronic switch module that is not turned on is turned on. .
  • the method includes:
  • the first electronic switch module and the mechanical switch that sequentially control the main branch are locked according to a preset time until the time after the lock meets the preset operation time of the mechanical switch, and the transfer is blocked.
  • the second electronic switch module of the branch is locked according to a preset time until the time after the lock meets the preset operation time of the mechanical switch, and the transfer is blocked.
  • the present application also provides a DC circuit breaker reclosing control device, including:
  • the first determining unit is configured to determine whether the second electronic switch module of the transfer branch is blocked
  • a first control unit configured to: when the blocking time is not less than the preset blocking time, turn on the first portion of the second electronic switch module; wherein the first portion of the second electronic switch that is currently turned on a voltage that is less than the initial latching quantity and is applied to the non-conducting second electronic switch module in parallel with a voltage greater than an operating voltage of the variable resistor;
  • the second determining unit is configured to determine whether the fault current of the faulty transmission line is greater than a preset threshold in a preset time;
  • the second control unit is configured to turn on the second electronic switch module that is not turned on when the fault current is not greater than the preset threshold.
  • the second determining unit comprises:
  • a first determining subunit configured to determine whether a peak value of a fault current of the faulty power transmission line is greater than a preset peak value
  • the second determining subunit is configured to determine whether the rate of change of the fault current of the faulty power transmission line within a preset time is greater than a preset rate of change.
  • the method further comprises:
  • the third control unit is configured to block the turned-on second electronic switch module when the fault current is greater than the preset threshold.
  • the method further comprises:
  • a second monitoring unit configured to monitor whether the blocking time is less than the preset blocking time
  • a fourth control unit configured to turn on the second portion of the second electronic switch module again when the blocking time is not less than the preset blocking time; wherein the second portion of the second electronic switch is turned on The second conductive quantity is less than the initial latching quantity, and the voltage of the variable resistor applied to the second electronic switch module not connected in parallel is greater than the operating voltage of the variable resistor;
  • a third determining unit configured to determine whether the fault current is greater than a preset threshold
  • a fifth control unit configured to block the second electronic switch module that is turned on again when the fault current is greater than the preset threshold
  • a fourth determining unit repeating, monitoring whether the blocking time is less than the preset blocking time until the said fault current is greater than the preset threshold, and blocking the second power that is turned on again
  • the step of the electronic device module determines whether the number of repetitions reaches a preset number of times
  • a sixth control unit configured to: when the number of repetitions reaches the preset number of times, the fault current is still greater than the preset threshold, and control to block the second power electronic device module and isolation that is turned on again Knife gate.
  • the method further comprises:
  • a seventh control unit configured to: when the number of repetitions does not reach the preset number of times, the fault current change rate is not greater than the preset threshold, and the second electronic switch module that is not turned on is turned on .
  • the method includes:
  • the fifth determining unit is configured to determine whether the transmission line is faulty
  • the eighth control unit is configured to, when the power transmission line fails, sequentially control the first electronic switch module and the mechanical switch of the main branch to be locked according to a preset time until the time after the locking meets the preset action of the mechanical switch At time, the second electronic switch module of the transfer branch is blocked.
  • the application provides a DC circuit breaker reclosing control device, comprising: a processor and a memory for storing a computer program capable of running on the processor,
  • processor is configured to perform the steps of the foregoing method when the computer program is run.
  • the application provides a storage medium storing computer executable instructions that, when executed, implement the aforementioned method steps.
  • the DC circuit breaker reclosing control method and device and the storage medium provided by the embodiment of the present application determine whether the second electronic switch module of the transfer branch is blocked, and when the second electronic switch of the transfer branch is blocked, the monitoring is performed. Whether the blocking time is less than the preset blocking time, and when the blocking time is not less than the preset blocking time, turning on the second electronic switch module, wherein the first conductive quantity of the second electronic switch that is currently turned on is smaller than the initial blocking quantity and The voltage of the variable resistor applied in parallel to the non-conducting second electronic switch module is greater than the operating voltage of the variable resistor, and determining whether the fault current of the faulty power transmission line is greater than a preset threshold, when the fault current is not greater than a preset threshold That is, the faulty fault line only has a temporary fault, and the fault has disappeared, the current grows slowly and tends to a smooth normal current, and the second electronic switch module that is not turned on is turned on, and the conduction branch of the conduction is detected.
  • the fault current of the road and the size of the preset threshold determine whether the fault line is a temporary fault or a permanent fault, not It is required to conduct all the second electronic switch modules in the transfer branch, which avoids the impact of the large surge current generated during the circuit breaker reclosing process on other equipments, specifically, avoids the circuit breaker reclosing process.
  • the large inrush current generated and the excessive voltage change rate dv/dt affect other equipment (or avoid the impact of large electrical stress on other equipment during the circuit breaker reclosing process), thus solving the existing
  • the control of the high voltage DC circuit breaker reclosing does not have the problem of the current limiting and voltage limiting capability, and improves the reliability of the flexible DC transmission system operation.
  • FIG. 1 is a schematic diagram of a topology structure of a DC circuit breaker according to an embodiment of the present application
  • FIGS. 2A-2C are schematic diagrams showing the topology of a power electronic device according to an embodiment of the present application.
  • 3A-3C are schematic structural diagrams of a buffer equalization branch provided by an embodiment of the present application.
  • 4a is a flow chart 1 of a DC circuit breaker reclosing control method provided by an embodiment of the present application
  • 4b is a second flowchart of a DC circuit breaker reclosing control method according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of a DC circuit breaker reclosing in a permanent fault according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of a DC circuit breaker reclosing in a temporary fault according to an embodiment of the present application
  • FIG. 7 is a schematic structural diagram of a DC circuit breaker reclosing control device according to another embodiment of the present application.
  • the embodiment of the present application provides a DC circuit breaker reclosing control method, which is applied to the structure described in FIG. 1 , FIG. 2 and FIG. 3 .
  • the specific control method is as shown in FIG. 4 a , and includes:
  • step S11 Determine whether the second electronic switch module of the transfer branch is blocked. When the second electronic switch of the transfer branch is blocked, step S12 is performed.
  • the first electronic switch module and the mechanical switch of the main branch are first blocked, and in order to realize the arc-free breaking of the mechanical switch, the first electronic body is usually first blocked.
  • the mechanical switch K is blocked when it flows through the current, that is, when the main branch current is equal to 0, after completely transferring to the transfer branch;
  • the two electronic switch modules S1, S2, S3, S4, and S5 are in an on state at this time, and the fault current flows into the transfer branch 2 until the time t1 is reached, all of which are blocked, because the second electronic switch module is mechanically closed and closed, the time delay is blocked.
  • the mechanical switch K When the later time satisfies the preset operation time of the mechanical switch, the mechanical switch K is reliably disconnected; wherein the locking of the second electronic switch occurs in the mechanical opening and closing lock, and the movement When hoe reaches a preset distance apart, only second electronic switch closed, i.e., the transfer of all the branch power electronic devices;
  • the monitoring blocking time is less than the preset blocking time.
  • step S13 is performed.
  • the blocking time should satisfy the absorption energy balance of the variable resistor and the deionization time of the system as much as possible.
  • the sorting method and the fixed duration method can be used to determine the blocking time.
  • variable resistance absorption energy and recovery time and the system deionization time are optimized, and the variable resistance after returning to the initial state is re-input;
  • the fixed time method can pre-calculate the energy absorbed by the variable resistor and the system deionization time, and In this way, the order of input of each arrester and the waiting time of the system deionization are preset.
  • the first part of the second electronic switch module is turned on; wherein the first conductive portion of the first portion of the first conductive switch is less than the initial latching amount and is applied to the second non-conducting
  • the voltage of the variable resistor connected in parallel with the electronic switch module is greater than the operating voltage of the variable resistor.
  • the second electronic switch modules S1 and S2 can be controlled to be turned on, and the voltage of the variable resistor applied to the second electronic switch module not connected in parallel is (for example, 450 kV) greater than that of the variable resistor.
  • the voltage for example, 150 kV
  • the variable resistor MOV is broken down, and the fault current flows into the S1-S2-MOV3-MOV4-MOV5, and the second electronic switch module can be arbitrarily selected, and only the above conditions are satisfied.
  • step S14 Determine whether the fault current of the faulty power transmission line is greater than a preset threshold.
  • the method may include: determining whether a peak value of the fault current of the faulty power transmission line is greater than a preset peak value, or determining a fault current of the faulty power transmission line. If the fault current is greater than the preset threshold, step S15 is performed; when the fault current is greater than the preset threshold, step S16 is performed. The rate of change of the current in the path S1-S2-MOV3-MOV4-MOV5 is detected.
  • the DC circuit breaker reclosing control method determines whether the second electronic switch module of the transfer branch is blocked, and when the second electronic switch of the transfer branch is blocked, whether the monitoring lock time is less than the preset lockout Time, when the blocking time is not less than the preset blocking time, turning on the second electronic switch module, wherein the first conductive quantity of the second electronic switch that is currently turned on is less than the initial blocking quantity and is applied to the unconducted
  • the voltage of the variable resistor connected in parallel with the two electronic switch modules is greater than the operating voltage of the variable resistor, and it is determined whether the fault current of the faulty transmission line is greater than a preset threshold. When the fault current is not greater than a preset threshold, the faulty fault line occurs. Only a temporary fault has occurred, and the fault has disappeared, the current is growing slowly and tends to a smooth normal current, turning on the second electronic switch module that is not conducting.
  • the fault line By detecting the fault current of the turned-on branch branch and the preset threshold value, it is determined whether the fault line is a temporary fault or a permanent fault, and it is not necessary to conduct all the second electronic switch modules in the transfer branch, thereby avoiding the circuit breaker.
  • the large inrush current generated during the reclosing process affects other equipment.
  • step S17 Monitor whether the blocking time is less than the preset blocking time. When the blocking time is not less than the preset blocking time, step S18 is performed.
  • step S21 repeating the monitoring whether the blocking time is less than the preset blocking time until the said fault current is greater than the preset threshold, and latching the second power electronic device module that is turned on again
  • the number of repetitions does not reach the preset number of times, it may be determined based on whether the fault current is greater than a preset threshold, and specifically, when the fault current is greater than the preset threshold, Controlling the second power electronic device module and the isolating switch that are turned on again, when the fault current is not greater than the preset threshold, turning on the remaining second power electronic device module, and then turning on the mechanical switch And the first power electronic device realizes the operation of the circuit breaker.
  • the fault current is greater than the preset threshold, and the second power electronics module and the isolation knife that are turned on are controlled to be blocked. At this time, it is determined that the circuit breaker is reclosed in a permanent fault, and the second power electronic device module is blocked again to block the isolating knife gate, and the reclosing switching operation is completed to avoid the influence of leakage current on the thermal effect of the variable resistor.
  • the present application further provides a DC circuit breaker reclosing control device, as shown in FIG. 7, comprising:
  • the first determining unit 21 is configured to determine whether the second electronic switch module of the transfer branch is blocked
  • the first control unit 23 is configured to turn on the first part of the second electronic switch module when the blocking time is not less than the preset blocking time; wherein the first part of the second electronic switch that is currently turned on The first conductive quantity is less than the initial latching quantity, and the voltage of the variable resistor connected in parallel to the non-conducting second electronic switch module is greater than the operating voltage of the variable resistor;
  • the second determining unit 24 is configured to determine whether the fault current of the faulty power transmission line is greater than a preset threshold
  • the second control unit 25 is configured to turn on the second electronic switch module that is not turned on when the fault current is not greater than the preset threshold.
  • the second determining unit comprises:
  • a first determining subunit configured to determine whether a peak value of a fault current of the faulty power transmission line is greater than a preset peak value
  • the second determining subunit is configured to determine whether the rate of change of the fault current of the faulty power transmission line within a preset time is greater than a preset rate of change.
  • the method further comprises:
  • the third control unit is configured to block the turned-on second electronic switch module when the fault current is greater than the preset threshold.
  • the device further includes: a first monitoring unit 22 configured to monitor whether the blocking time is less than a preset blocking time when the second electronic switch of the branching branch is blocked;
  • the method further comprises:
  • a second monitoring unit configured to monitor whether the blocking time is less than the preset blocking time
  • a fourth control unit configured to turn on the second portion of the second electronic switch module again when the blocking time is not less than the preset blocking time; wherein the second portion of the second electronic switch is turned on The second conductive quantity is less than the initial latching quantity, and the voltage of the variable resistor applied to the second electronic switch module not connected in parallel is greater than the operating voltage of the variable resistor;
  • a third determining unit configured to determine whether the fault current is greater than a preset threshold
  • a fifth control unit configured to block the second electronic switch module that is turned on again when the fault current is greater than the preset threshold
  • a fourth determining unit repeating, monitoring whether the blocking time is less than the preset blocking time until the said fault current is greater than the preset threshold, and blocking the second power that is turned on again
  • the step of the electronic device module determines whether the number of repetitions reaches a preset number of times
  • a sixth control unit configured to: when the number of repetitions reaches the preset number of times, the fault current is still greater than the preset threshold, and control to block the second power electronic device module isolation knife that is turned on again brake.
  • the method further comprises:
  • a seventh control unit configured to: when the number of repetitions does not reach the preset number of times, the fault current change rate is not greater than the preset threshold, and the second electronic switch module that is not turned on is turned on .
  • the method includes:
  • the fifth determining unit is configured to determine whether the transmission line is faulty
  • the eighth control unit is configured to, when the power transmission line fails, sequentially control the first electronic switch module and the mechanical switch of the main branch to be locked according to a preset time until the time after the locking meets the preset action of the mechanical switch At time, the second electronic switch module of the transfer branch is blocked.
  • the DC circuit breaker reclosing control device determines whether the second electronic switch module of the transfer branch is blocked, and when the second electronic switch of the transfer branch is blocked, whether the monitoring lockout time is less than the preset lockout. Time, when the blocking time is not less than the preset blocking time, turning on the second electronic switch module, wherein the first conductive quantity of the second electronic switch that is currently turned on is less than the initial blocking quantity and is applied to the unconducted.
  • the voltage of the variable resistor connected in parallel with the two electronic switch modules is greater than the operating voltage of the variable resistor, and it is determined whether the fault current of the faulty transmission line is greater than a preset threshold. When the fault current is not greater than a preset threshold, the faulty fault line occurs.
  • the control process does not have the problem of the ability of current limiting and voltage limiting, and improves the reliability of the operation of the flexible direct current transmission system.
  • a DC circuit breaker reclosing control device includes: a processor and a memory for storing a computer program capable of running on the processor,
  • the present invention provides a storage medium, where the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed, the method steps of the foregoing embodiments are implemented.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present application in essence or the contribution to the prior art can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic).
  • the disc, the optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in various embodiments of the present invention.

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Abstract

本申请公开了一种直流断路器重合闸控制方法及装置、存储介质，其中所述方法包括：判断转移支路的第二电子开关模块是否发生闭锁，当转移支路的第二电子开关发生闭锁时，监测闭锁时间是否小于预设闭锁时间，当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块，判断发生故障的输电线路的故障电流是否大于预设阈值，当故障电流不大于预设阈值时，导通未导通的所述第二电子开关模块，解决了现有高压直流断路器重合闸的控制过程中不具备限流限压的能力，降低了柔性直流输电系统运行的可靠性的问题。

Description

一种直流断路器重合闸控制方法及装置、存储介质
相关申请的交叉引用
本申请基于申请号为201710716994.0、申请日为2017年08月21日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及电力电子技术领域，尤其涉及一种直流断路器重合闸控制方法及装置、存储介质。
背景技术
基于电压源换流器的多端柔性直流电网技术，能够实现多电源供电和多落点受电，且控制灵活、冗余较多和可靠性高等特点，已经成为解决大规模可再生能源并网与消纳的一种有效手段，然而直流电网对故障响应时间要求较高，因此，高压直流断路器成为保证柔性直流输电系统稳定安全可靠运行的关键设备之一。
现有高压直流断路器混合采用机械开关和全控型电力电子开关，其兼具了机械开关的低损耗特性和电力电子开关的快速分断特性，是目前应用高压柔性直流输电系统中直流分断最为有效的技术途径，除了具备快速和低损耗、强电流分断等特性外，还具备了快速重合闸能力；在应用于含有大容量的架空线路的柔性多端直流和直流电网的输电线路故障大多数属瞬时性故障，约占总故障次数的80％～90％以上，这些瞬时性故障多数由雷电引起的绝缘子表面闪络、线路对树枝放电、大风引起的碰线、鸟害和树枝等物掉落在导线上以及绝缘子表面污染等原因引起，这些故障被继电保护动作断开断路器后，故障点去游离，电弧熄灭，绝缘强度恢复，故障自行 消除。此时，如把输电线路的断路器合上，就能恢复供电，从而减少停电时间，提高供电可靠性，现阶段研制出的混合式直流断路器均具有在毫秒级以内切断千安级以上故障电流能力，为柔性直流供电技术的应用奠定了坚实的基础。
现有高压直流断路器，如图1所示，直流断路器由机械开关(K)、隔离刀闸(K1和K2)、电力电子器件子模块(SM)和避雷器(MOV)单元构成，包含有3条并联支路，主支路1、转移支路2和能量吸收支路3其中，主支路1由快速机械开关K和电力电子器件以矩阵组合或串并联、串联形式构成的第一电子开关模块(Tm)，有效的提高直流断路器稳态运行和分断的可靠性以及降低混合式直流断路器稳态运行时的通态损耗；转移支路2由多个包含有至少一个串联电力电子器件子模块的第二电子开关模块(S1、S2…Sn)串联构成；能量吸收支路由多组可变电阻构成，每组并联连接于转移支路每一个第二电子开关模块两端；其中电力电子器件子模块SM包含多种拓扑型式。一种实施例如图2(a)所示，由一组IGBT串联与另一组IGBT反串联组成；一种实施例如图2(b)所示，由4个全控型电力电子器件IGBT和缓冲均压支路组成；一种实施例如图2(c)所示，由4个二极管(Diode)组成全桥模块，一个或多个IGBT并联再和缓冲均压支路连接于全桥模块上、下桥臂之间。缓冲均压支路包含三种是实施例如图3所示，图3(a)只含有一个非线性电阻；图3(b)只含有一个阻尼电容C；图3(c)由阻尼电阻R与阻尼电容C并联后与二极管D串联组成.
然而，基于电压源换流器的换流技术的多端柔性直流电网，通常具有很高的等效容抗，该等效电容不但来自于换流器侧，还包含着传输线路上的分布电容，故在基于电压源换流器的直流输电系统初始启动充电或因临时故障重新启动充电阶段，由于大电容的存在，会导致一个来自于交流侧较大的浪涌电流，为了抑制该浪涌电流的峰值，一般会在换流器的交流侧增加一个电阻，当抑制完浪涌电流后再被旁路开关旁路掉，但如果在直流 侧也同样预插一个电阻和旁路开关，增加了额外成本以及换流站的占地面积。另外在终端出现开路故障的重合闸过程中，由于电压波的全反射会导致一个约2倍标准值的过电压，故在高压直流断路器在重合于故障线路过程中，浪涌电流与过电压增大了对柔性直流输电系统中其他设备的电气应力，降低了柔性直流输电系统运行的可靠性，故高压直流断路器在保证具有重合闸功能的同时，还应具备限流限压的能力，为实现直流系统快速重启提供有效保障。
发明内容
因此，本申请要解决的技术问题在于现有高压直流断路器重合闸的控制过程中不具备限流限压的能力，降低了柔性直流输电系统运行的可靠性的问题。
有鉴于此，本申请提供一种直流断路器重合闸控制方法，包括：
判断转移支路的第二电子开关模块是否发生闭锁；
当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压；
判断发生故障的输电线路的故障电流是否大于预设阈值；
当所述故障电流不大于所述预设阈值时，导通所述未导通的所述第二电子开关模块。
优选地，所述判断发生故障的输电线路的故障电流是否大于预设阈值的步骤，包括：
判断发生故障的输电线路的故障电流的峰值是否大于预设峰值；或者
判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率。
优选地，还包括：
当所述故障电流大于所述预设阈值时，闭锁所述导通的所述第二电子开关模块。
优选地，当闭锁所述导通的所述第二电子开关模块的步骤之后，包括：
监测所述闭锁时间是否小于所述预设闭锁时间；
当所述闭锁时间不小于所述预设闭锁时间时，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压；
判断所述故障电流在预设时间内变化率是否大于预设阈值；
当所述故障电流在所述预设时间内变化率大于所述预设阈值时，再次闭锁所述再次导通的所述第二电子开关模块；
重复所述监测所述闭锁时间是否小于所述预设闭锁时间直至所述当所述故障电流变化率大于所述预设阈值时，再次闭锁所述再次导通的所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数；
当所述重复次数达到所述预设次数时，所述故障电流在所述预设时间内变化率仍大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸。
优选地，还包括：
当所述重复次数未达到所述预设次数时，所述故障电流在所述预设时间内变化率不大于所述预设阈值，导通所述未导通的所述第二电子开关模块。
优选地，所述判断转移支路的第二电子开关模块是否发生闭锁的步骤之前，包括：
判断输电线路是否发生故障；
当所述输电线路发生故障时，依次控制主支路的第一电子开关模块和 机械开关按照预设时间闭锁，直至闭锁后的时间满足所述机械开关的预设动作时间时，闭锁所述转移支路的所述第二电子开关模块。
相应地，本申请还提供直流断路器重合闸控制装置，包括：
第一判断单元，配置为判断转移支路的第二电子开关模块是否发生闭锁；
第一控制单元，配置为当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压；
第二判断单元，配置为判断发生故障的输电线路的故障电流在预设时间内变化率是否大于预设阈值；
第二控制单元，配置为当所述故障电流不大于所述预设阈值时，导通所述未导通的所述第二电子开关模块。
优选地，所述第二判断单元包括：
第一判断子单元，配置为判断发生故障的输电线路的故障电流的峰值是否大于预设峰值；或者
第二判断子单元，配置为判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率。
优选地，还包括：
第三控制单元，配置为当所述故障电流大于所述预设阈值时，闭锁所述导通的所述第二电子开关模块。
优选地，还包括：
第二监测单元，配置为监测所述闭锁时间是否小于所述预设闭锁时间；
第四控制单元，配置为当所述闭锁时间不小于所述预设闭锁时间时，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第 二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压；
第三判断单元，配置为判断所述故障电流是否大于预设阈值；
第五控制单元，配置为当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电子开关模块；
第四判断单元，重复所述监测所述闭锁时间是否小于所述预设闭锁时间直至所述当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数；
第六控制单元，配置为当所述重复次数达到所述预设次数时，所述故障电流仍大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸。
优选地，还包括：
第七控制单元，配置为当所述重复次数未达到所述预设次数时，所述故障电流变化率不大于所述预设阈值，导通所述未导通的所述第二电子开关模块。
优选地，在第一判断单元执行操作之前，包括：
第五判断单元，配置为判断输电线路是否发生故障；
第八控制单元，配置为当所述输电线路发生故障时，依次控制主支路的第一电子开关模块和机械开关按照预设时间闭锁，直至闭锁后的时间满足所述机械开关的预设动作时间时，闭锁所述转移支路的所述第二电子开关模块。
本申请提供一种直流断路器重合闸控制装置，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，
其中，所述处理器用于运行所述计算机程序时，执行前述方法的步骤。
本申请提供一种存储介质，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实现前述方法步骤。
本申请实施例提供的一种直流断路器重合闸控制方法及装置、存储介 质，通过判断转移支路的第二电子开关模块是否发生闭锁，当转移支路的第二电子开关发生闭锁时，监测闭锁时间是否小于预设闭锁时间，当闭锁时间不小于预设闭锁时间时，导通第二电子开关模块，其中当前导通的所述第二电子开关的第一导通数量小于初始闭锁数量且施加到未导通的第二电子开关模块并联的可变电阻的电压大于可变电阻的动作电压，判断发生故障的输电线路的故障电流是否大于预设阈值，当故障电流不大于预设阈值时，即发生故障的故障线路只是发生了临时性的故障，且故障已经消失，电流增长缓慢并倾向于平稳的正常电流，导通未导通的第二电子开关模块，通过检测导通的转移支路的故障电流与预设阈值的大小判定故障线路是临时性故障还是永久性故障，不需要导通转移支路中所有的第二电子开关模块，避免了断路器重合闸过程中产生的较大的浪涌电流对其他设备造成影响，具体来说，避免了由于断路器重合闸过程中产生的较大浪涌电流和过快的电压变化率dv/dt对其他设备造成影响(或者，避免了断路器重合闸过程中产生较大的电气应力对其他设备造成影响)，从而解决现有高压直流断路器重合闸的控制过程中不具备限流限压的能力的问题，并且提升柔性直流输电系统运行的可靠性。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种直流断路器拓扑结构示意图；
图2A-2C是本申请实施例提供的一种电力电子器件的拓扑结构示意 图；
图3A-3C是本申请实施例提供的一种缓冲均压支路的结构示意图；
图4a是本申请实施例提供的一种直流断路器重合闸控制方法的流程图一；
图4b是本申请实施例提供的一种直流断路器重合闸控制方法的流程图二；
图5是本申请实施例提供的一种直流断路器重合闸于永久性故障示意图；
图6是本申请实施例提供的一种直流断路器重合闸于临时性故障示意图；
图7是本申请另一实施例提供的一种直流断路器重合闸控制装置的结构示意图。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例提供一种直流断路器重合闸控制方法，应用于图1、图2图3所述的结构，具体控制方法如图4a所示，包括：
S11，判断转移支路的第二电子开关模块是否发生闭锁，当所述转移支路的第二电子开关发生闭锁时，执行步骤S12。
如图5或图6所示，当输电系统的某一输电线路发生故障时，先闭锁主支路的第一电子开关模块和机械开关，为了实现机械开关无弧分断，通常先闭锁第一电子开关模块；其中，机械开关无弧分断则意味无电流流过； 例如图5所示以五组第二电子开关模块为例，当故障发生于t0时刻后第一电子开关模块Tm随即闭锁，在t0-t1之间某一时刻机械开关K闭锁，这里，需要指出的是，机械开关K是在其流过电流，即主支路电流等于0时，完全转移至转移支路之后进行闭锁；第二电子开关模块S1、S2、S3、S4、S5此时处于导通状态，故障电流流入转移支路2中直至到达t1时刻全部闭锁，由于第二电子开关模块较机械开关闭锁时间延迟，即闭锁后的时间满足所述机械开关的预设动作时间时，保证了机械开关K可靠断开；其中，所述第二电子开关的闭锁发生在机械开关闭锁、且动静锄头达到预设开距时，才会对第二电子开关进行闭锁，即转移支路所有电力电子器件；
当第二电子开关模块于t1时刻全部闭锁之后，由能量吸收支路的可变电阻产生反向电压，制使得电压过零点，使得故障电流于t2时刻切断。
S12，监测闭锁时间是否小于预设闭锁时间，当所述闭锁时间不小于所述预设闭锁时间时，执行步骤S13。为了最大程度利用可变电阻继而切断故障电流，闭锁时间需尽量满足可变电阻的吸收能量平衡和系统的去离子化时间，可利用排序法和固定时长法确定闭锁时间，其中，排序法是将可变电阻吸收能量和恢复时间以及系统去离子化时间进行优化，将恢复至初始状态后的可变电阻重新投入；固定时长法可预先计算可变电阻吸收的能量和系统去离子化时间，并以此来预设各避雷器的投入次序和等待系统去离子化时间。
S13，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压。
如图5所示，可控制第二电子开关模块S1、S2导通，施加到未导通的所述第二电子开关模块并联的可变电阻的电压为(例如450kV)大于可变电阻的动作电压(例如150kV)，可变电阻MOV被击穿，此时故障电流流 入S1-S2-MOV3-MOV4-MOV5，导通第二电子开关模块可以任意选择，只需满足上述条件即可。
S14，判断发生故障的输电线路的故障电流是否大于预设阈值，具体可以包括：判断发生故障的输电线路的故障电流的峰值是否大于预设峰值，或者是判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率，当所述故障电流不大于所述预设阈值时，执行步骤S15；当所述故障电流大于所述预设阈值时，执行步骤S16。检测通路S1-S2-MOV3-MOV4-MOV5中电流的变化率。
S15，导通所述未导通的所述第二电子开关模块。当故障电流在预设时间内变化率不大于预设阈值时，则判定直流断路器重合闸于临时性故障，导通剩余的第二电力电子器件模块，再依次导通机械开关和第一电力电子器件实现断路器运行。此时导通未导通的所有的第二电子开关模块，继而触发已闭锁的主支路导通，系统恢复正常工作。如图6所示当于t3时刻导通S1、S2，t3到t4时刻这段时间，能够为系统提供时间判断是否重合闸于临时故障；由于判定直流断路器重合闸于临时性故障，此时S3、S4、S5在一定的去离子时间后相继于t4、t5、t6时刻分别导通，继而随后触发Tm、K于t7时刻导通，其中，S3、S4、S5分别导通，能够减少断路器两端电压变化率dv/dt，实现软导通，并且还能够多次判断是否还处于临时故障。
S16，闭锁所述导通的所述第二电子开关模块。当故障电流大于预设阈值时，表明线路发生永久性故障，则直流断路器不需要进行重合闸操作，控制闭锁所述第二电力电子器件模块和隔离刀闸。如图5所示，当满足可变电阻能量吸收时间的情况下，S1、S2可于t3、t5时刻导通，也可以导通其他的第二电子开关模块，由于判定发生永久性故障，故第一电子开关模块与机械开关永久性闭锁。
本申请实施例提供的直流断路器重合闸控制方法，通过判断转移支路的第二电子开关模块是否发生闭锁，当转移支路的第二电子开关发生闭锁 时，监测闭锁时间是否小于预设闭锁时间，当闭锁时间不小于预设闭锁时间时，导通第二电子开关模块，其中当前导通的所述第二电子开关的第一导通数量小于初始闭锁数量且施加到未导通的第二电子开关模块并联的可变电阻的电压大于可变电阻的动作电压，判断发生故障的输电线路的故障电流是否大于预设阈值，当故障电流不大于预设阈值时，即发生故障的故障线路只是发生了临时性的故障，且故障已经消失，电流增长缓慢并倾向于平稳的正常电流，导通未导通的第二电子开关模块。
通过检测导通的转移支路的故障电流与预设阈值的大小，判定故障线路是临时性故障还是永久性故障，不需要导通转移支路中所有的第二电子开关模块，避免了断路器重合闸过程中产生的较大的浪涌电流对其他设备造成影响，具体来说，避免了由于断路器重合闸过程中产生的较大浪涌电流和过快的电压变化率dv/dt对其他设备造成影响(或者可以理解为，避免了断路器重合闸过程中产生较大的电气应力对其他设备造成影响)，从而解决现有高压直流断路器重合闸的控制过程中不具备限流限压的能力的问题，并且提升柔性直流输电系统运行的可靠性。
为了提高故障检测的可靠性，避免由于临时性故障线路恢复时间大于断路器的重合闸时间，导致只根据一次闭合后检测出电流变化率大于预设阈值，则直接判断为永久性故障，影响输电系统正常使用，当闭锁导通的所述第二电子开关模块的步骤之后，进行预定次数的重合闸操作，如图4b所示，具体包括以下步骤：
S17，监测所述闭锁时间是否小于所述预设闭锁时间，当所述闭锁时间不小于所述预设闭锁时间时，执行步骤S18。
S18，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压，其中当前第二导通数量与第一导通数量可以相同，也可以不同，只 需满足上述条件即可。
S19，判断所述故障电流是否大于预设阈值，当所述故障电流大于所述预设阈值时，
S20，再次闭锁所述再次导通的所述第二电子开关模块；
S21，重复所述监测所述闭锁时间是否小于所述预设闭锁时间直至所述当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数，当所述重复次数达到所述预设次数时，判断故障电流是否大于预设阀值，如果大于阀值，执行步骤S22，如果小于阀值，执行步骤S23；
还需要指出的是，当所述重复次数未达到所述预设次数的时候，也可以基于故障电流是否大于预设阀值来判断，具体可以包括，当故障电流大于所述预设阈值时，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸，当故障电流不大于所述预设阈值时，导通剩余的第二电力电子器件模块，再依次导通机械开关和第一电力电子器件实现断路器运行。
S22，所述故障电流大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸。此时判定断路器重合闸于永久性故障，再次闭锁第二电力电子器件模块之后闭锁隔离刀闸，完成重合闸分断操作，避免漏电流对可变电阻产生热效应等影响。
S23，导通剩余的第二电力电子器件模块，再依次导通机械开关和第一电力电子器件实现断路器运行。
相应地，本申请还提供一种直流断路器重合闸控制装置，如图7所示，包括：
第一判断单元21，配置为判断转移支路的第二电子开关模块是否发生闭锁；
第一控制单元23，配置为当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第 二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压；
第二判断单元24，配置为判断发生故障的输电线路的故障电流是否大于预设阈值；
第二控制单元25，配置为当所述故障电流不大于所述预设阈值时，导通所述未导通的所述第二电子开关模块。
优选地，所述第二判断单元包括：
第一判断子单元，配置为判断发生故障的输电线路的故障电流的峰值是否大于预设峰值；或者
第二判断子单元，配置为判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率。
优选地，还包括：
第三控制单元，配置为当所述故障电流大于所述预设阈值时，闭锁所述导通的所述第二电子开关模块。
所述装置还包括：第一监测单元22，配置为当所述转移支路的第二电子开关发生闭锁时，监测闭锁时间是否小于预设闭锁时间；
优选地，还包括：
第二监测单元，配置为监测所述闭锁时间是否小于所述预设闭锁时间；
第四控制单元，配置为当所述闭锁时间不小于所述预设闭锁时间时，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压；
第三判断单元，配置为判断所述故障电流是否大于预设阈值；
第五控制单元，配置为当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电子开关模块；
第四判断单元，重复所述监测所述闭锁时间是否小于所述预设闭锁时 间直至所述当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数；
第六控制单元，配置为当所述重复次数达到所述预设次数时，所述故障电流仍大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块隔离刀闸。
优选地，还包括：
第七控制单元，配置为当所述重复次数未达到所述预设次数时，所述故障电流变化率不大于所述预设阈值，导通所述未导通的所述第二电子开关模块。
优选地，在第一判断单元执行操作之前，包括：
第五判断单元，配置为判断输电线路是否发生故障；
第八控制单元，配置为当所述输电线路发生故障时，依次控制主支路的第一电子开关模块和机械开关按照预设时间闭锁，直至闭锁后的时间满足所述机械开关的预设动作时间时，闭锁所述转移支路的所述第二电子开关模块。
本申请实施例提供的直流断路器重合闸控制装置，通过判断转移支路的第二电子开关模块是否发生闭锁，当转移支路的第二电子开关发生闭锁时，监测闭锁时间是否小于预设闭锁时间，当闭锁时间不小于预设闭锁时间时，导通第二电子开关模块，其中当前导通的所述第二电子开关的第一导通数量小于初始闭锁数量且施加到未导通的第二电子开关模块并联的可变电阻的电压大于可变电阻的动作电压，判断发生故障的输电线路的故障电流是否大于预设阈值，当故障电流不大于预设阈值时，即发生故障的故障线路只是发生了临时性的故障，且故障已经消失，电流增长缓慢并倾向于平稳的正常电流，导通未导通的第二电子开关模块，通过检测导通的转移支路的故障电流与预设阈值的大小，判定故障线路是临时性故障还是永久性故障，不需要导通转移支路中所有的第二电子开关模块，避免了断路 器重合闸过程中产生的较大的浪涌电流对其他设备造成影响，具体来说，避免了由于断路器重合闸过程中产生的较大浪涌电流和过快的电压变化率dv/dt对其他设备造成影响(或者，避免了断路器重合闸过程中产生较大的电气应力对其他设备造成影响)，从而解决现有高压直流断路器重合闸的控制过程中不具备限流限压的能力的问题，并且提升柔性直流输电系统运行的可靠性。
本发明本申请实施例中一种直流断路器重合闸控制装置，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，
其中，所述处理器用于运行所述计算机程序时，执行前述实施例的方法步骤，这里不再进行赘述。
本发明本申请实施例提供的一种存储介质，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实施前述实施例的方法步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者服务器不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者服务器所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者服务器中还存在另外的相同要素。
上述本发明本申请实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以 是手机，计算机，服务器，空调器，或者网络设备等)执行本发明本申请各个实施例所述的方法。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本申请创造的保护范围之中。

Claims (14)

  1. 一种直流断路器重合闸控制方法，包括：
    判断转移支路的第二电子开关模块是否发生闭锁；
    当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压；
    判断发生故障的输电线路的故障电流是否大于预设阈值；
    当所述故障电流不大于所述预设阈值时，导通所述未导通的所述第二电子开关模块。
  2. 根据权利要求1所述的方法，其中，所述判断发生故障的输电线路的故障电流是否大于预设阈值，包括：
    判断发生故障的输电线路的故障电流的峰值是否大于预设峰值；或者
    判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率。
  3. 根据权利要求1所述的方法，其中，所述方法还包括：
    当所述故障电流大于所述预设阈值时，闭锁导通的所述第二电子开关模块。
  4. 根据权利要求3所述的方法，其中，当闭锁导通的所述第二电子开关模块的步骤之后，所述方法还包括：
    监测所述闭锁时间是否小于所述预设闭锁时间；
    当所述闭锁时间不小于所述预设闭锁时间时，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压；
    判断所述故障电流是否大于预设阈值；
    当所述故障电流大于所述预设阈值时，再次闭锁所述第二部分所述第二电子开关模块；
    监测所述闭锁时间是否小于所述预设闭锁时间直至所述当所述故障电流大于所述预设阈值时，再次闭锁所述第二部分所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数；
    当所述重复次数达到所述预设次数时，所述故障电流仍大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸。
  5. 根据权利要求4所述的方法，其中，所述方法还包括：
    当所述重复次数未达到所述预设次数时，所述故障电流变化率不大于所述预设阈值，导通所述未导通的所述第二电子开关模块。
  6. 根据权利要求1所述的方法，其中，所述判断转移支路的第二电子开关模块是否发生闭锁的步骤之前，所述方法还包括：
    判断输电线路是否发生故障；
    当所述输电线路发生故障时，依次控制主支路的第一电子开关模块和机械开关按照预设时间闭锁，直至闭锁后的时间满足所述机械开关的预设动作时间时，闭锁所述转移支路的所述第二电子开关模块。
  7. 一种直流断路器重合闸控制装置，包括：
    第一判断单元，配置为判断转移支路的第二电子开关模块是否发生闭锁；
    第一控制单元，配置为当所述闭锁时间不小于所述预设闭锁时间时，导通第一部分所述第二电子开关模块；其中，当前导通的第一部分所述第二电子开关的第一导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块所并联的可变电阻的电压大于所述可变电阻的动作电压；
    第二判断单元，配置为判断发生故障的输电线路的故障电流是否大于预设阈值；
    第二控制单元，配置为当所述故障电流不大于所述预设阈值时，导通所述未导通的所述第二电子开关模块。
  8. 根据权利要求7所述的装置，其中，所述第二判断单元包括：
    第一判断子单元，配置为判断发生故障的输电线路的故障电流的峰值是否大于预设峰值；或者
    第二判断子单元，配置为判断发生故障的输电线路的故障电流在预设时间内的变化率是否大于预设变化率。
  9. 根据权利要求7所述的装置，其中，还包括：
    第三控制单元，配置为当所述故障电流大于所述预设阈值时，闭锁所述导通的所述第二电子开关模块。
  10. 根据权利要求9所述的装置，其中，还包括：
    第二监测单元，配置为监测所述闭锁时间是否小于所述预设闭锁时间；
    第四控制单元，配置为当所述闭锁时间不小于所述预设闭锁时间时，再次导通第二部分所述第二电子开关模块；其中，导通的第二部分所述第二电子开关的第二导通数量小于初始闭锁数量、且施加到未导通的所述第二电子开关模块并联的可变电阻的电压大于所述可变电阻的动作电压；
    第三判断单元，配置为判断所述故障电流是否大于预设阈值；
    第五控制单元，配置为当所述故障电流大于所述预设阈值时，再次闭锁所述第二部分所述第二电子开关模块；
    第四判断单元，重复所述监测所述闭锁时间是否小于所述预设闭锁时间直至所述当所述故障电流大于所述预设阈值时，再次闭锁所述再次导通的所述第二电力电子器件模块的步骤，判断重复次数是否达到预设次数；
    第六控制单元，配置为当所述重复次数达到所述预设次数时，所述故障电流仍大于所述预设阈值，控制闭锁所述再次导通的所述第二电力电子器件模块和隔离刀闸。
  11. 根据权利要求10所述的装置，其中，还包括：
    第七控制单元，配置为当所述重复次数未达到所述预设次数时，所述故障电流变化率不大于所述预设阈值，导通所述未导通的所述第二电子开关模块。
  12. 根据权利要求7所述的装置，其中，在第一判断单元执行操作之前，包括：
    第五判断单元，配置为判断输电线路是否发生故障；
    第八控制单元，配置为当所述输电线路发生故障时，依次控制主支路的第一电子开关模块和机械开关按照预设时间闭锁，直至闭锁后的时间满足所述机械开关的预设动作时间时，闭锁所述转移支路的所述第二电子开关模块。
  13. 一种直流断路器重合闸控制装置，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，
    其中，所述处理器用于运行所述计算机程序时，执行权利要求1-6任一项所述方法的步骤。
  14. 一种存储介质，所述存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实现权利要求1-6任一项所述的方法步骤。
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