WO2020082856A1 - Quick switch module and high-voltage short circuit current limiting device, and control method thereof - Google Patents
Quick switch module and high-voltage short circuit current limiting device, and control method thereof Download PDFInfo
- Publication number
- WO2020082856A1 WO2020082856A1 PCT/CN2019/099572 CN2019099572W WO2020082856A1 WO 2020082856 A1 WO2020082856 A1 WO 2020082856A1 CN 2019099572 W CN2019099572 W CN 2019099572W WO 2020082856 A1 WO2020082856 A1 WO 2020082856A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- fast
- current limiting
- voltage
- short
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Definitions
- the invention relates to the field of short-circuit fault current limiting of an AC power system, in particular to a fast switching module, a high-voltage short-circuit current limiting device and a control method thereof.
- short circuit is one of the most common serious faults that endanger the safe and stable operation of the power system and cause large-scale blackouts.
- the severity of the damage to the power system caused by a short-circuit fault mainly depends on the magnitude of the short-circuit current.
- the level of short-circuit current is constantly increasing, and the short-circuit current level of power grids in many regions, especially in coastal economically developed areas, has approached or even exceeded the maximum allowable level prescribed by the power regulations.
- the fault current limiter is an electrical device connected in series in the line. Compared with the ordinary current limiting reactor, it has the functions of starting, normal operation and returning from the fault current limiting state to the normal operating state without any adverse effects on the power system. .
- fault current limiters can be divided into superconducting current limiters, solid state current limiters, PTC thermistor current limiters and arc current transfer type current limiters according to the principle of formation.
- fault current limiters of different principles have different configurations, they are basically limited by the way of finally putting impedance in the short circuit, but the way of putting impedance is different, such as quenching input impedance using superconducting materials, using electricity
- superconducting current limiter is the integration of detection, conversion and current limit, which can play the role of current limiting in milliseconds, but it is difficult to apply high voltage and current setting; solid state current limiter has a fast response speed and can automatically exit after removing the fault.
- the power electronic switch series and parallel technology is difficult, and the reliability is not high;
- the structure of the PTC thermistor is simple, no fault detection equipment is needed, the response speed is fast, but the overvoltage is large and repeat Poor usability, high voltage is difficult to apply;
- the arc current transfer topology is relatively simple, and the normal operating loss is small, but it is greatly affected by the arc voltage, and it is not suitable for high voltage occasions.
- the fault current limiting device using a mechanical switch shunt reactor type has low loss, but due to the high-voltage mechanical switch opening time of up to tens of milliseconds, it cannot meet the needs of rapid current limiting.
- the embodiments of the present invention are expected to provide a high-voltage short-circuit current limiting device and control method, which has low loss during normal operation, adopts multi-break series connection and isolation for energy supply, and places the fast switching operation control mechanism and the switch body in The high potential eliminates the insulating pull rod of the fast switch, which greatly improves the opening speed of the fast switch, and can achieve flexible control of high-voltage rapid current limiting and current limiting depth.
- the technical solution adopted by the present invention is: a high-voltage short-circuit current limiting device, including at least one fast switching module and at least one current limiting reactor;
- the fast switch modules are connected in series;
- the current limiting reactor is connected in parallel with the fast switch module
- the fast switch module includes: 2 electromagnetic repulsive fast switches, 1 energy storage unit and 1 isolated energy supply transformer; the 2 electromagnetic repulsive fast switches are connected in series; the 2 electromagnetic repulsive fast switches have no insulated rods,
- the same energy storage unit provides the electromagnetic pulse energy required for opening and closing; the energy storage unit and the two electromagnetic repulsion switches are connected in series at an intermediate potential; the output end of the isolation transformer is connected to the energy storage unit, and the input end is grounded Electrical energy.
- the fast switch module further includes two voltage equalizing capacitors, and the two voltage equalizing capacitors are respectively connected in parallel across the two electromagnetic repulsion switches.
- the number of the current limiting reactor is the same as that of the fast switching module; the current limiting reactor is connected in parallel with a single fast switching module.
- the number of the fast switching modules is N times the number of current limiting reactors, where N is an integer and greater than or equal to 2; the current limiting reactor is connected in parallel with N fast switching modules to form a parallel unit, and the parallel connection Units are connected in series.
- the number of the current limiting reactors is consistent with the number of electromagnetic repulsion switches; the current limiting reactor is connected in parallel with a single electromagnetic repulsion switch.
- the above-mentioned high-voltage short-circuit current limiting device further includes a fast switch branch current detection device and a total current detection device; the fast switch branch current detection device measures the fast switch branch current, the total The current detection device measures the system line current.
- the device further includes a set of master control system; the master control system receives the signals of the fast switch branch current detection device and the master current detection device, and judges the current signal; the master control system is connected to the fast
- the energy storage unit in the switch module sends a quick switch action command and receives signals of the fast switch position status and energy storage status.
- the present invention also proposes a control method for a high-voltage short-circuit current limiting device.
- the control method specifically includes the following steps:
- Step 1 The fast switch module is in position and the system current flows through the fast switch
- Step 2 A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system sends the opening command to the energy storage and control of each fast switch module, the electromagnetic repulsion switch quickly opens to the rated opening distance, and the current is naturally transferred to the current limiting reactor after the current crosses zero ;
- Step 3 After the short-circuit fault is removed, the master control system controls the quick switch module to close according to the system voltage and current returning to normal values, and then bypasses the current limiting reactor.
- the current criterion in the second step includes: current amplitude, phase and / or current change rate criterion.
- the invention also proposes a control method of a high-voltage short-circuit current limiting device.
- the control method specifically includes the following steps:
- Step 21 The fast switch module is in position and the system current flows through the fast switch
- Step 22 A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system first sends a trip command to a single fast switch module, first put in a group of parallel current limiting reactors, if the current limit rate meets the requirements, the current limiting reactors will no longer be put in, if the short circuit current still exceeds the standard , The master control system continues to send opening commands to other fast switch modules, and the corresponding electromagnetic repulsion switch quickly opens the current limiting reactor;
- Step 23 After the short-circuit fault is removed, the master control system controls the quick switch module to close after the system voltage and current return to normal values, and then bypasses the current limiting reactor.
- the current criterion in step 22 includes: current amplitude, phase and / or current rate of change criterion.
- the invention also provides a quick switch module for a high-voltage short-circuit current limiting device, which includes: an electromagnetic repulsive fast switch connected in series; an energy storage unit connected to the electromagnetic repulsive fast switch to provide the electromagnetic repulsive fast switch The electromagnetic pulse energy required for opening and closing; the isolated energy supply transformer has an input terminal and an output terminal, the output terminal is electrically connected to the energy storage unit, and the input terminal is grounded.
- the number of modules and the parallel connection with current limiting reactor can be flexibly configured according to the actual voltage level and current limiting depth requirements, which is easy to expand the high voltage and current level;
- the operating mechanism of the fast switching module is raised to a high potential, and the insulating parts of the mechanism are eliminated, which can greatly shorten the opening time and speed up the short-circuit current limiting speed;
- the isolation power supply transformer is adopted, and the system can still be operated for opening and closing when the system is not energized.
- FIG. 1 is a schematic structural diagram 1 of a high-voltage short-circuit current limiting device according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram 1 of a fast switching module in a high-voltage short-circuit current limiting device according to an embodiment of the present invention
- FIG. 3 is a second schematic structural diagram of a high-voltage short-circuit current limiting device according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram 3 of a high-voltage short-circuit current limiting device according to an embodiment of the present invention.
- FIG. 5 is a fourth schematic structural diagram of a high-voltage short-circuit current limiting device according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a fast switching module for a high-voltage short-circuit current limiting device according to an embodiment of the present invention.
- 10-fast switch module 20-total current detection device, 30-fast switch branch current detection device, 40-total control system, 50-current limiting reactor, 101-voltage equalizing capacitor, 102-electromagnetic repulsion switch body , 103-fast switching energy storage unit, 104-isolated energy supply transformer.
- the invention proposes a high-voltage short-circuit current limiting device.
- the high-voltage short-circuit current limiting device includes at least one fast switching module 10, at least one current limiting reactor 50, and one fast switching branch current detection device 30 and One total current detection device 20, one total control system 40.
- the fast switch module includes two electromagnetic repulsion switches 102 connected in series, and the two electromagnetic repulsion switches are provided with a set of energy storage units 103 for opening and closing energy, and the electromagnetic repulsion switches can be divided within 5 ms. Brake to rated opening distance.
- the energy storage unit is connected to two electromagnetic repulsion switches in series at the middle point of the same potential, and an isolated power supply transformer 104 provides the required power.
- the isolated power supply transformer withstands the system-to-earth operating voltage, the input side is grounded potential power supply, and the output side is connected to the energy storage and control unit at the system voltage high potential like the fast switch. There is no need to use an insulated drawbar to isolate the power supply, which reduces the speed The operation work required for the opening of the switch significantly increases the opening time.
- the current limiting reactor 50 is connected in parallel with the total branch of all fast switch modules in series, and the electromagnetic repulsion switches in each fast switch module are connected in parallel with a voltage equalizing capacitor 101 to ensure multiple breaks Consistency of pressure equalization in series.
- a current limiting reactor 50 is connected in parallel with each fast switching module 10, and the number of current limiting reactors is the same as the number of fast switching modules.
- the current limiting reactor 50 is connected in parallel with each electromagnetic repulsion switch in the fast switch module, the number is consistent with the electromagnetic repulsion switch. In this embodiment, since each electromagnetic repulsion switch is connected in parallel If the same current limiting reactor is used, the voltage equalizing capacitor can be eliminated.
- the number of the fast switching modules is N times the number of current limiting reactors, where N is an integer and greater than or equal to 2; the current limiting reactor and N fast switches
- the modules are connected in parallel to form a parallel unit, and the parallel units are connected in series.
- N is 2.
- the series branch of the fast switch module is provided with a current detection device, and the external is provided with a total current detection device.
- the first step of the control method during normal operation, the fast switch modules are all in position, the current flows through the fast switch, and the loss is very small.
- Step 2 The system has a short-circuit fault, the total current detection device or the fast switch module branch current detection device sends the current signal to the main control system, and the main control system determines whether the short-circuit current has reached the current amplitude, current change rate and other criteria Action threshold. After reaching the threshold value, as shown in Figure 1, the master control system sends the opening command to the energy storage and control of each fast switch module. The electromagnetic repulsion switch opens to the rated opening distance within 5ms.
- the master control system can first send a trip command to a single fast switch module, and first put in a group of parallel current-limiting reactors, such as current When the limit rate meets the requirements, the current-limiting reactor can no longer be put in. If the short-circuit current still exceeds the standard, the master control system can continue to generate opening commands to other fast switch modules. The corresponding electromagnetic repulsion switch quickly opens the current-limiting reactor, so that it can be Realize the current limiting effect from shallow to deep.
- Step 3 After the short-circuit fault is removed, the master control system controls the quick switch module to close according to the system voltage and current to return to normal values, and then bypasses the current limiting reactor.
- FIG. 6 is a schematic diagram of a fast switching module for a high-voltage short-circuit current limiting device according to an embodiment of the present invention. As shown in FIG. 6, the module includes: electromagnetic repulsive fast switches 601 and 602 connected in series, an energy storage unit 611, and an isolated energy supply transformer 621.
- the energy storage unit 611 is connected to the electromagnetic repulsive fast switches 601 and 602, and provides the electromagnetic pulse energy required for the opening / closing of the electromagnetic repulsive fast switches 601 and 602.
- the output end of the isolation energy supply transformer 621 is electrically connected to the energy storage unit 611, and the input end is grounded.
- the electromagnetic repulsion switches 601 and 602 can be opened to the rated opening distance within 5 ms.
- the module may further include voltage equalizing capacitors 631 and 632, which are connected in parallel with the electromagnetic repulsive fast switches 601 and 602, respectively.
- the module may also include three or more electromagnetic repulsion fast switches connected in series.
- the module may also include a voltage equalizing capacitor with the same number of electromagnetic repulsive fast switches, and are respectively connected in parallel with a plurality of electromagnetic repulsive fast switches.
- the module may further include two or more energy storage units, and two or more isolation function transformers.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present application discloses a high-voltage short circuit current limiting device and a control method thereof, and a quick switch module for the high-voltage short circuit current limiting device. The high-voltage short circuit current limiting device comprises at least one quick switch module, at least one current limiting reactor connected in parallel to the at least one quick switch module, at least one quick switch branch current detection device, and at least one total current detection device. Each quick switch module comprises two electromagnetically repulsive quick switches connected in series, two voltage sharing capacitors, one energy storage and control unit, and one isolation power supply transformer. Each current limiting reactor can be connected in parallel to a branch connecting all of the quick switch modules in series, or connected in parallel to one of the quick switch modules, and can also be connected in parallel to one electromagnetically repulsive quick switch. The device quickly suppresses a short circuit current at a high voltage level. The number and wiring technique of the quick switch modules and the current limiting reactors can also be adjusted according to an actual application scenario. The invention has a flexible and controllable current limiting depth, a simple structure, and easily suppresses a high-voltage short circuit current.
Description
本发明涉及交流电力系统短路故障限流领域，尤其涉及一种快速开关模块、高压短路电流限制装置及其控制方法。The invention relates to the field of short-circuit fault current limiting of an AC power system, in particular to a fast switching module, a high-voltage short-circuit current limiting device and a control method thereof.
在各种各样的电力系统事故中，短路是危及电力系统安全稳定运行、导致大面积停电事故最为常见的严重故障之一。短路故障对电力系统破坏的严重程度，主要取决于短路电流的大小。近年来，随着我国电力建设的不断发展、用电负荷不断增加、低阻抗大容量变压器的应用、发电厂及发电机单机容量的不断增大以及各大区电网的互联等，使得电力系统中的短路电流水平不断提高，许多地区特别是沿海经济发达地区电网的短路电流水平已经直逼甚至超过电力规程所规定的最大允许水平的严重情况，给电力系统安全、稳定运行以及电力系统中各种电气设备如断路器、变压器、变电站母线、线路构架、导线和支承绝缘子以及接地网等提出了更为苛刻的要求，并已成为我国各大区电网，特别是经济发达地区电力系统安全、稳定运行的严重隐患和关键技术难题之一，同时在某些情况下实际上已成为制约电力建设和进一步发展的瓶颈。Among various power system accidents, short circuit is one of the most common serious faults that endanger the safe and stable operation of the power system and cause large-scale blackouts. The severity of the damage to the power system caused by a short-circuit fault mainly depends on the magnitude of the short-circuit current. In recent years, with the continuous development of China's power construction, increasing power consumption, the application of low-impedance large-capacity transformers, the continuous increase of single-unit capacity of power plants and generators, and the interconnection of power grids in various regions, etc. The level of short-circuit current is constantly increasing, and the short-circuit current level of power grids in many regions, especially in coastal economically developed areas, has approached or even exceeded the maximum allowable level prescribed by the power regulations. This has given power systems safe, stable operation and various power system Electrical equipment such as circuit breakers, transformers, substation busbars, line architecture, conductors and supporting insulators, and grounding grids have put forward more stringent requirements, and have become the power grids in major regions of China, especially the safe and stable operation of power systems in economically developed areas One of the serious hidden dangers and key technical difficulties, and in some cases has actually become a bottleneck restricting power construction and further development.
宏观上讲,有效限制短路电流不仅仅可以解决电力系统短路容量超标问题,而且还可能大大降低电网中各种电气设备如变压器、断路器等对短路电流的设计容量标准,从而带来更大的经济效益和社会效益。因此对短路电流的限流技术,长期以来都是国内外电力系统和科研工作者关注的一个热点问题。Macroscopically speaking, effectively limiting the short-circuit current can not only solve the problem of excessive short-circuit capacity of the power system, but also greatly reduce the design capacity standards for short-circuit current of various electrical equipment such as transformers and circuit breakers in the power grid, thereby bringing greater Economic and social benefits. Therefore, the current limiting technology of short-circuit current has long been a hot issue of concern for power systems and scientific researchers at home and abroad.
故障限流器是一种串接在线路中的电气设备,与普通限流电抗器相比,它具备启动、正常运行以及从故障限流状态返回到正常运行状态时应对电力系统无任何不利影响。目前故障限流器根据构成原理可分为：超导限流器、固态限流 器、PTC热敏电阻限流器和电弧电流转移型限流器。虽然各种原理的故障限流器构成不同，但基本都是以最终在短路回路中投入阻抗的方式进行限流，只是投入阻抗的方式不同，如采用超导材料的失超投入阻抗、采用电力电子半导体器件投入阻抗以及采用快速开关转移短路电流投入阻抗等等。The fault current limiter is an electrical device connected in series in the line.Compared with the ordinary current limiting reactor, it has the functions of starting, normal operation and returning from the fault current limiting state to the normal operating state without any adverse effects on the power system. . At present, fault current limiters can be divided into superconducting current limiters, solid state current limiters, PTC thermistor current limiters and arc current transfer type current limiters according to the principle of formation. Although the fault current limiters of different principles have different configurations, they are basically limited by the way of finally putting impedance in the short circuit, but the way of putting impedance is different, such as quenching input impedance using superconducting materials, using electricity The input impedance of electronic semiconductor devices and the use of fast switching to transfer short-circuit current input impedance and so on.
超导限流器优点是检测、转换、限流一体化，能在毫秒级内起到限流作用，但高压应用、电流整定困难；固态限流器反应速度快，切除故障后能自动退出，但依赖故障检测设备，切除故障产生很高过电压，电力电子开关串并联技术难度大，可靠性不高；PTC热敏电阻结构简单，无需故障检测设备，反应速度快，但过电压大，重复使用性差，高压难以应用；电弧电流转移型拓扑结构相对简单，正常运行损耗小，但受电弧电压影响较大，高电压场合不适用。The advantage of superconducting current limiter is the integration of detection, conversion and current limit, which can play the role of current limiting in milliseconds, but it is difficult to apply high voltage and current setting; solid state current limiter has a fast response speed and can automatically exit after removing the fault. However, relying on the fault detection equipment to remove the fault produces a very high overvoltage, the power electronic switch series and parallel technology is difficult, and the reliability is not high; the structure of the PTC thermistor is simple, no fault detection equipment is needed, the response speed is fast, but the overvoltage is large and repeat Poor usability, high voltage is difficult to apply; the arc current transfer topology is relatively simple, and the normal operating loss is small, but it is greatly affected by the arc voltage, and it is not suitable for high voltage occasions.
采用机械开关并联电抗器型的故障限流装置损耗低，但由于高压机械开关分闸时间长达数十个毫秒，无法满足快速限流的需要。The fault current limiting device using a mechanical switch shunt reactor type has low loss, but due to the high-voltage mechanical switch opening time of up to tens of milliseconds, it cannot meet the needs of rapid current limiting.
基于上述问题，本案由此产生。Based on the above problems, this case arises from this.
发明内容Summary of the invention
为解决上述技术问题，本发明实施例期望提供一种高压短路电流限制装置及控制方法，正常工作时损耗小，采用多断口串联和隔离供能，将快速开关操作控制机构与开关本体均放置于高电位，取消了快速开关的绝缘拉杆，大大提升了快速开关的分闸速度，能够实现高压快速限流和限流深度的灵活控制。In order to solve the above technical problems, the embodiments of the present invention are expected to provide a high-voltage short-circuit current limiting device and control method, which has low loss during normal operation, adopts multi-break series connection and isolation for energy supply, and places the fast switching operation control mechanism and the switch body in The high potential eliminates the insulating pull rod of the fast switch, which greatly improves the opening speed of the fast switch, and can achieve flexible control of high-voltage rapid current limiting and current limiting depth.
为了达成上述目的，本发明采用的技术方案为：一种高压短路电流限制装置，包括至少1个快速开关模块，至少1个限流电抗器；In order to achieve the above object, the technical solution adopted by the present invention is: a high-voltage short-circuit current limiting device, including at least one fast switching module and at least one current limiting reactor;
所述快速开关模块之间串联连接；The fast switch modules are connected in series;
所述限流电抗器与快速开关模块并联；The current limiting reactor is connected in parallel with the fast switch module;
所述快速开关模块包括：2个电磁斥力快速开关、1个储能单元和1个隔离供能变压器；所述2个电磁斥力快速开关串联连接；所述2个电磁斥力快速开 关无绝缘拉杆，由同1个储能单元提供分、合闸所需电磁脉冲能量；所述储能单元与2个电磁斥力开关串联中间点等电位；所述隔离变压器输出端接储能单元，输入端接地电位电能。The fast switch module includes: 2 electromagnetic repulsive fast switches, 1 energy storage unit and 1 isolated energy supply transformer; the 2 electromagnetic repulsive fast switches are connected in series; the 2 electromagnetic repulsive fast switches have no insulated rods, The same energy storage unit provides the electromagnetic pulse energy required for opening and closing; the energy storage unit and the two electromagnetic repulsion switches are connected in series at an intermediate potential; the output end of the isolation transformer is connected to the energy storage unit, and the input end is grounded Electrical energy.
进一步地，所述快速开关模块还包括2个均压电容，所述2个均压电容分别并联在所述2个电磁斥力开关两端。Further, the fast switch module further includes two voltage equalizing capacitors, and the two voltage equalizing capacitors are respectively connected in parallel across the two electromagnetic repulsion switches.
进一步地，所述限流电抗器只有一个，所述限流电抗器与全部快速开关模块串联后的支路并联。Further, there is only one current-limiting reactor, and the current-limiting reactor is connected in parallel with the branches after all the fast switch modules are connected in series.
进一步地，所述限流电抗器数量与快速开关模块一致；所述限流电抗器与单个快速开关模块并联。Further, the number of the current limiting reactor is the same as that of the fast switching module; the current limiting reactor is connected in parallel with a single fast switching module.
进一步地，所述快速开关模块数量为限流电抗器数量的N倍，其中，N为整数且大于等于2；所述限流电抗器与N个快速开关模块并联，构成并联单元，所述并联单元之间串联。Further, the number of the fast switching modules is N times the number of current limiting reactors, where N is an integer and greater than or equal to 2; the current limiting reactor is connected in parallel with N fast switching modules to form a parallel unit, and the parallel connection Units are connected in series.
进一步地，所述限流电抗器数量与电磁斥力开关数量一致；所述限流电抗器与单个电磁斥力开关并联。Further, the number of the current limiting reactors is consistent with the number of electromagnetic repulsion switches; the current limiting reactor is connected in parallel with a single electromagnetic repulsion switch.
进一步地，上述的一种高压短路电流限制装置还包括1个快速开关支路电流检测装置，1个总电流检测装置；所述快速开关支路电流检测装置测量快速开关支路电流，所述总电流检测装置测量系统线路电流。Further, the above-mentioned high-voltage short-circuit current limiting device further includes a fast switch branch current detection device and a total current detection device; the fast switch branch current detection device measures the fast switch branch current, the total The current detection device measures the system line current.
进一步地，所述装置还包括1套总控系统；所述总控系统接收快速开关支路电流检测装置和总电流检测装置信号，并对电流信号进行判断；所述总控系统连接所述快速开关模块中的储能单元，发送快速开关动作命令，并接收快速开关位置状态、储能状态信号。Further, the device further includes a set of master control system; the master control system receives the signals of the fast switch branch current detection device and the master current detection device, and judges the current signal; the master control system is connected to the fast The energy storage unit in the switch module sends a quick switch action command and receives signals of the fast switch position status and energy storage status.
本发明同时提出了一种高压短路电流限制装置的控制方法，所述控制方法具体包括以下步骤：The present invention also proposes a control method for a high-voltage short-circuit current limiting device. The control method specifically includes the following steps:
第1步：快速开关模块处于合位，系统电流流过快速开关；Step 1: The fast switch module is in position and the system current flows through the fast switch;
第2步：系统发生短路故障，所述总电流检测装置或快速开关模块支路电流检测装置将电流信号发送至总控系统，所述总控系统根据电流判据判断短路电流是否达到动作门槛值；到达门槛值后，总控系统向每个快速开关模块中储能及控制发送分闸指令，电磁斥力开关快速分闸到额定开距，待电流过零后自然将电流转移至限流电抗器；Step 2: A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system sends the opening command to the energy storage and control of each fast switch module, the electromagnetic repulsion switch quickly opens to the rated opening distance, and the current is naturally transferred to the current limiting reactor after the current crosses zero ;
第3步：短路故障切除后，所述总控系统根据系统电压和电流恢复至正常值后控制快速开关模块合闸，重新将限流电抗器旁路。Step 3: After the short-circuit fault is removed, the master control system controls the quick switch module to close according to the system voltage and current returning to normal values, and then bypasses the current limiting reactor.
进一步地，所述第2步中的电流判据包括：电流幅值、相位和/或电流变化率判据。Further, the current criterion in the second step includes: current amplitude, phase and / or current change rate criterion.
本发明还提出了一种高压短路电流限制装置的控制方法，所述控制方法具体包括以下步骤：The invention also proposes a control method of a high-voltage short-circuit current limiting device. The control method specifically includes the following steps:
第21步：快速开关模块处于合位，系统电流流过快速开关；Step 21: The fast switch module is in position and the system current flows through the fast switch;
第22步：系统发生短路故障，所述总电流检测装置或快速开关模块支路电流检测装置将电流信号发送至总控系统，所述总控系统根据电流判据判断短路电流是否达到动作门槛值；到达门槛值后，总控系统先向单个快速开关模块发送分闸指令，首先投入1组并联限流电抗器，如电流限制率达到要求则不再投入限流电抗器，如短路电流仍超标，总控系统继续向其他快速开关模块发送分闸指令，相应的电磁斥力开关快速分闸将限流电抗器投入；Step 22: A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system first sends a trip command to a single fast switch module, first put in a group of parallel current limiting reactors, if the current limit rate meets the requirements, the current limiting reactors will no longer be put in, if the short circuit current still exceeds the standard , The master control system continues to send opening commands to other fast switch modules, and the corresponding electromagnetic repulsion switch quickly opens the current limiting reactor;
第23步：短路故障切除后，所述总控系统根据系统电压和电流恢复至正常值后控制快速开关模块合闸，重新将限流电抗器旁路。Step 23: After the short-circuit fault is removed, the master control system controls the quick switch module to close after the system voltage and current return to normal values, and then bypasses the current limiting reactor.
进一步地，所述第22步中的电流判据包括：电流幅值、相位和/或电流变化率判据。Further, the current criterion in step 22 includes: current amplitude, phase and / or current rate of change criterion.
本发明还提供了一种用于高压短路电流限制装置的快速开关模块，包括：串联连接的电磁斥力快速开关；储能单元，与所述电磁斥力快速开关连接，为所述电磁斥力快速开关提供分、合闸所需电磁脉冲能量；隔离供能变压器，具有输入端和输出端，所述输出端与所述储能单元电连接，所述输入端接地。The invention also provides a quick switch module for a high-voltage short-circuit current limiting device, which includes: an electromagnetic repulsive fast switch connected in series; an energy storage unit connected to the electromagnetic repulsive fast switch to provide the electromagnetic repulsive fast switch The electromagnetic pulse energy required for opening and closing; the isolated energy supply transformer has an input terminal and an output terminal, the output terminal is electrically connected to the energy storage unit, and the input terminal is grounded.
利用上述高压短路电流限制装置、控制方法及快速开关模块，可以至少部分地达到以下有益效果：With the above high-voltage short-circuit current limiting device, control method and fast switching module, the following beneficial effects can be achieved at least in part:
1、采用一拖二的快速开关模块，可根据实际电压等级和限流深度的要求灵活配置模块数量以及与限流电抗器的并联方式，易于高电压大电流等级的扩展；1. Using one-for-two fast switching module, the number of modules and the parallel connection with current limiting reactor can be flexibly configured according to the actual voltage level and current limiting depth requirements, which is easy to expand the high voltage and current level;
2、采用隔离供能变压器方式，将快速开关模块的操作机构提升至高电位，取消机构绝缘部件，可大大缩短分闸时间，加快短路电流限制速度；2. Using the isolated power supply transformer method, the operating mechanism of the fast switching module is raised to a high potential, and the insulating parts of the mechanism are eliminated, which can greatly shorten the opening time and speed up the short-circuit current limiting speed;
3、采用隔离供能变压器，系统不带电时，仍可以进行分合闸操作。3. The isolation power supply transformer is adopted, and the system can still be operated for opening and closing when the system is not energized.
图1为本发明实施例提供的一种高压短路电流限制装置结构示意图一；1 is a schematic structural diagram 1 of a high-voltage short-circuit current limiting device according to an embodiment of the present invention;
图2为本发明实施例提供的一种高压短路电流限制装置中快速开关模块结构示意图一；2 is a schematic structural diagram 1 of a fast switching module in a high-voltage short-circuit current limiting device according to an embodiment of the present invention;
图3为本发明实施例提供的一种高压短路电流限制装置结构示意图二；3 is a second schematic structural diagram of a high-voltage short-circuit current limiting device according to an embodiment of the present invention;
图4为本发明实施例提供的一种高压短路电流限制装置结构示意图三；4 is a schematic structural diagram 3 of a high-voltage short-circuit current limiting device according to an embodiment of the present invention;
图5为本发明实施例提供的一种高压短路电流限制装置结构示意图四；5 is a fourth schematic structural diagram of a high-voltage short-circuit current limiting device according to an embodiment of the present invention;
图6为本发明实施例提供的一种用于高压短路电流限制装置的快速开关模块的原理示意图。FIG. 6 is a schematic diagram of a fast switching module for a high-voltage short-circuit current limiting device according to an embodiment of the present invention.
其中：10-快速开关模块，20-总电流检测装置，30-快速开关支路电流检测装置，40-总控系统，50-限流电抗器，101-均压电容，102-电磁斥力开关本体，103-快速开关储能单元，104-隔离供能变压器。Among them: 10-fast switch module, 20-total current detection device, 30-fast switch branch current detection device, 40-total control system, 50-current limiting reactor, 101-voltage equalizing capacitor, 102-electromagnetic repulsion switch body , 103-fast switching energy storage unit, 104-isolated energy supply transformer.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention.
本发明提出了一种高压短路电流限制装置。本发明实施例中，如图1、3和4所示，高压短路电流限制装置包含至少1个快速开关模块10，至少1个限流电抗器50，1个快速开关支路电流检测装置30和1个总电流检测装置20，1个总控系统40。The invention proposes a high-voltage short-circuit current limiting device. In the embodiment of the present invention, as shown in FIGS. 1, 3, and 4, the high-voltage short-circuit current limiting device includes at least one fast switching module 10, at least one current limiting reactor 50, and one fast switching branch current detection device 30 and One total current detection device 20, one total control system 40.
本发明实施例中，如图2所示，快速开关模块包括2个电磁斥力开关102串联，2个电磁斥力开关由1套储能单元103提供分合闸能量，电磁斥力开关能够在5ms内分闸到额定开距。储能单元与2个电磁斥力开关串联中间点等电位，并由1个隔离供能变压器104提供所需电能。正常工作时，隔离供能变压器承受系统对地工作电压，输入侧接地电位电源，输出侧接与快速开关一样处于系统电压高电位的储能及控制单元，无需采用绝缘拉杆隔离电源，降低了快速开关分闸所需的操作功，显著提高分闸时间。In the embodiment of the present invention, as shown in FIG. 2, the fast switch module includes two electromagnetic repulsion switches 102 connected in series, and the two electromagnetic repulsion switches are provided with a set of energy storage units 103 for opening and closing energy, and the electromagnetic repulsion switches can be divided within 5 ms. Brake to rated opening distance. The energy storage unit is connected to two electromagnetic repulsion switches in series at the middle point of the same potential, and an isolated power supply transformer 104 provides the required power. During normal operation, the isolated power supply transformer withstands the system-to-earth operating voltage, the input side is grounded potential power supply, and the output side is connected to the energy storage and control unit at the system voltage high potential like the fast switch. There is no need to use an insulated drawbar to isolate the power supply, which reduces the speed The operation work required for the opening of the switch significantly increases the opening time.
本发明实施例中，如图1所示，限流电抗器50与全部快速开关模块串联的总支路并联，每个快速开关模块中的电磁斥力开关均并联了均压电容101，保证多断口串联的均压一致性。In the embodiment of the present invention, as shown in FIG. 1, the current limiting reactor 50 is connected in parallel with the total branch of all fast switch modules in series, and the electromagnetic repulsion switches in each fast switch module are connected in parallel with a voltage equalizing capacitor 101 to ensure multiple breaks Consistency of pressure equalization in series.
在另一实施例中，如图3所示，限流电抗器50与每个快速开关模块10并联，限流电抗器数量与快速开关模块数量一致。In another embodiment, as shown in FIG. 3, a current limiting reactor 50 is connected in parallel with each fast switching module 10, and the number of current limiting reactors is the same as the number of fast switching modules.
在另一实施例中，如图4所示，限流电抗器50与快速开关模块中的每个电磁斥力开关并联，数量与电磁斥力开关一致，该实施例中由于每个电磁斥力开关均并联了相同的限流电抗器，则可取消均压电容。In another embodiment, as shown in FIG. 4, the current limiting reactor 50 is connected in parallel with each electromagnetic repulsion switch in the fast switch module, the number is consistent with the electromagnetic repulsion switch. In this embodiment, since each electromagnetic repulsion switch is connected in parallel If the same current limiting reactor is used, the voltage equalizing capacitor can be eliminated.
在另一实施例中，如图5所示，所述快速开关模块数量为限流电抗器数量 的N倍，其中，N为整数且大于等于2；所述限流电抗器与N个快速开关模块并联，构成并联单元，所述并联单元之间串联。本施例中N取2。In another embodiment, as shown in FIG. 5, the number of the fast switching modules is N times the number of current limiting reactors, where N is an integer and greater than or equal to 2; the current limiting reactor and N fast switches The modules are connected in parallel to form a parallel unit, and the parallel units are connected in series. In this embodiment, N is 2.
本发明实施例中，如图1所示，快速开关模块串联支路装有电流检测装置，外部装有总电流检测装置。In the embodiment of the present invention, as shown in FIG. 1, the series branch of the fast switch module is provided with a current detection device, and the external is provided with a total current detection device.
本发明实施例中，控制方法第1步：正常工作时，快速开关模块全部处于合位，电流流过快速开关，损耗非常小。In the embodiment of the present invention, the first step of the control method: during normal operation, the fast switch modules are all in position, the current flows through the fast switch, and the loss is very small.
第2步：系统发生短路故障，总电流检测装置或快速开关模块支路电流检测装置将电流信号发送至总控系统，总控系统根据电流幅值、电流变化率等判据判断短路电流是否达到动作门槛值。到达门槛值后，如图1所示，总控系统向每个快速开关模块中储能及控制发送分闸指令，电磁斥力开关在5ms内分闸到额定开距，待电流过零后自然将电流转移至限流电抗器；在另一实施例中，如图3或4所示，总控系统可先向单个快速开关模块发送分闸指令，首先投入1组并联限流电抗器，如电流限制率达到要求可不再投入限流电抗器，如短路电流仍超标，总控系统可继续向其他快速开关模块发生分闸指令，相应的电磁斥力开关快速分闸将限流电抗器投入，从而可实现由浅到深的限流效果。Step 2: The system has a short-circuit fault, the total current detection device or the fast switch module branch current detection device sends the current signal to the main control system, and the main control system determines whether the short-circuit current has reached the current amplitude, current change rate and other criteria Action threshold. After reaching the threshold value, as shown in Figure 1, the master control system sends the opening command to the energy storage and control of each fast switch module. The electromagnetic repulsion switch opens to the rated opening distance within 5ms. After the current crosses zero, it will naturally The current is transferred to the current-limiting reactor; in another embodiment, as shown in Figure 3 or 4, the master control system can first send a trip command to a single fast switch module, and first put in a group of parallel current-limiting reactors, such as current When the limit rate meets the requirements, the current-limiting reactor can no longer be put in. If the short-circuit current still exceeds the standard, the master control system can continue to generate opening commands to other fast switch modules. The corresponding electromagnetic repulsion switch quickly opens the current-limiting reactor, so that it can be Realize the current limiting effect from shallow to deep.
第3步：短路故障切除后，总控系统根据系统电压和电流恢复至正常值后控制快速开关模块合闸，重新将限流电抗器旁路。Step 3: After the short-circuit fault is removed, the master control system controls the quick switch module to close according to the system voltage and current to return to normal values, and then bypasses the current limiting reactor.
图6为本发明实施例提供的一种用于高压短路电流限制装置的快速开关模块的原理示意图。如图6所示，该模块包括：串联连接的电磁斥力快速开关601和602、储能单元611、隔离供能变压器621。FIG. 6 is a schematic diagram of a fast switching module for a high-voltage short-circuit current limiting device according to an embodiment of the present invention. As shown in FIG. 6, the module includes: electromagnetic repulsive fast switches 601 and 602 connected in series, an energy storage unit 611, and an isolated energy supply transformer 621.
储能单元611与电磁斥力快速开关601和602连接，为电磁斥力快速开关601和602提供分/合闸所需电磁脉冲能量。The energy storage unit 611 is connected to the electromagnetic repulsive fast switches 601 and 602, and provides the electromagnetic pulse energy required for the opening / closing of the electromagnetic repulsive fast switches 601 and 602.
隔离供能变压器621的输出端与储能单元611电连接，输入端接地。The output end of the isolation energy supply transformer 621 is electrically connected to the energy storage unit 611, and the input end is grounded.
可选地，电磁斥力开关601和602能够在5ms内分闸到额定开距。Alternatively, the electromagnetic repulsion switches 601 and 602 can be opened to the rated opening distance within 5 ms.
可选地，该模块还可以包括均压电容631和632，分别与电磁斥力快速开关601和602并联连接。Optionally, the module may further include voltage equalizing capacitors 631 and 632, which are connected in parallel with the electromagnetic repulsive fast switches 601 and 602, respectively.
可选地，该模块还可以包括串联连接的三个或者三个以上电磁斥力快速开关。Optionally, the module may also include three or more electromagnetic repulsion fast switches connected in series.
进一步地，该模块还可以包括与电磁斥力快速开关数量相同的均压电容，分别与多个电磁斥力快速开关并联连接。Further, the module may also include a voltage equalizing capacitor with the same number of electromagnetic repulsive fast switches, and are respectively connected in parallel with a plurality of electromagnetic repulsive fast switches.
可选地，该模块还可以包括两个或者两个以上储能单元，以及两个或者两个以上隔离功能变压器。Optionally, the module may further include two or more energy storage units, and two or more isolation function transformers.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.
Claims (17)
- 一种用于高压短路电流限制装置的快速开关模块，包括：A fast switching module for high-voltage short-circuit current limiting device, including:串联连接的电磁斥力快速开关；Electromagnetic repulsion fast switch connected in series;储能单元，与所述电磁斥力快速开关连接，为所述电磁斥力快速开关提供分、合闸所需电磁脉冲能量；The energy storage unit is connected to the electromagnetic repulsive fast switch to provide the electromagnetic pulse energy required for opening and closing of the electromagnetic repulsive fast switch;隔离供能变压器，具有输入端和输出端，所述输出端与所述储能单元电连接，所述输入端接地。The isolated energy supply transformer has an input end and an output end, the output end is electrically connected to the energy storage unit, and the input end is grounded.
- 根据权利要求1所述的快速开关模块，其中所述电磁斥力快速开关为两个，所述储能单元为一个，与所述两个电磁斥力快速开关的串联中间点等电位，所述隔离供能变压器为一个。The quick switch module according to claim 1, wherein there are two electromagnetic repulsive fast switches and one energy storage unit, which is equipotential to the series intermediate point of the two electromagnetic repulsive fast switches, and the isolation is provided One transformer can be used.
- 根据权利要求2所述的快速开关模块，还包括：The quick switch module according to claim 2, further comprising:均压电容，与所述电磁斥力快速开关并联连接。The voltage equalizing capacitor is connected in parallel with the electromagnetic repulsive fast switch.
- 根据权利要求3所述的快速开关模块，其中所述均压电容为两个，分别并联在所述两个电磁斥力快速开关两端。The fast switching module according to claim 3, wherein the voltage equalizing capacitors are two, respectively connected in parallel across the two electromagnetic repulsive fast switches.
- 根据权利要求1所述的快速开关模块，其中所述电磁斥力快速开关由闭合状态进入分闸状态的时间小于五毫秒。The fast switch module according to claim 1, wherein the time for the electromagnetic repulsive fast switch to enter the open state from the closed state is less than five milliseconds.
- 一种高压短路电流限制装置，其特征在于，包括至少1个快速开关模块，至少1个限流电抗器；A high-voltage short-circuit current limiting device, characterized in that it includes at least one fast switching module and at least one current limiting reactor;所述快速开关模块之间串联连接；The fast switch modules are connected in series;所述限流电抗器与快速开关模块并联；The current limiting reactor is connected in parallel with the fast switch module;所述快速开关模块包括：2个电磁斥力快速开关、1个储能单元和1个隔离供能变压器；所述2个电磁斥力快速开关串联连接；所述2个电磁斥力快速开关无绝缘拉杆，由同1个储能单元提供分、合闸所需电磁脉冲能量；所述储能单元与2个电磁斥力开关串联中间点等电位；所述隔离变压器输出端接储能单元，输入端接地电位电能。The fast switch module includes: 2 electromagnetic repulsive fast switches, 1 energy storage unit and 1 isolated energy supply transformer; the 2 electromagnetic repulsive fast switches are connected in series; the 2 electromagnetic repulsive fast switches have no insulated rods, The same energy storage unit provides the electromagnetic pulse energy required for opening and closing; the energy storage unit and the two electromagnetic repulsion switches are connected in series at an intermediate potential; the output end of the isolation transformer is connected to the energy storage unit, and the input end is grounded Electrical energy.
- 根据权利要求6所述的一种高压短路电流限制装置，其特征在于，所述快速开关模块还包括2个均压电容，所述2个均压电容分别并联在所述2个电磁斥力开关两端。The high-voltage short-circuit current limiting device according to claim 6, characterized in that the fast switch module further includes two voltage equalizing capacitors, and the two voltage equalizing capacitors are connected in parallel between the two electromagnetic repulsion switches. end.
- 根据权利要求6所述的一种高压短路电流限制装置，其特征在于，所述限流电抗器只有一个，所述限流电抗器与全部快速开关模块串联后的支路并联。The high-voltage short-circuit current limiting device according to claim 6, characterized in that there is only one current limiting reactor, and the current limiting reactor is connected in parallel with all branches connected in series with all fast switch modules.
- 根据权利要求6所述的一种高压短路电流限制装置，其特征在于，所述限流电抗器数量与快速开关模块一致；所述限流电抗器与单个快速开关模块并联。The high-voltage short-circuit current limiting device according to claim 6, wherein the number of the current limiting reactors is the same as that of the fast switching module; the current limiting reactor is connected in parallel with a single fast switching module.
- 根据权利要求6所述的一种高压短路电流限制装置，其特征在于，所述快速开关模块数量为限流电抗器数量的N倍，其中，N为整数且大于等于2；所述限流电抗器与N个快速开关模块并联，构成并联单元，所述并联单元之间串联。The high-voltage short-circuit current limiting device according to claim 6, wherein the number of the fast switching modules is N times the number of current-limiting reactors, where N is an integer and greater than or equal to 2; the current-limiting reactance The device is connected in parallel with N fast switching modules to form a parallel unit, and the parallel units are connected in series.
- 根据权利要求6所述的一种高压短路电流限制装置，其特征在于，所述限流电抗器数量与电磁斥力开关数量一致；所述限流电抗器与单个电磁斥力开关并联。The high-voltage short-circuit current limiting device according to claim 6, wherein the number of the current-limiting reactors is the same as the number of electromagnetic repulsion switches; the current-limiting reactor is connected in parallel with a single electromagnetic repulsion switch.
- 根据权利要求6至10任一项所述的一种高压短路电流限制装置，其特征在于，还包括1个快速开关支路电流检测装置，1个总电流检测装置；所述快速开关支路电流检测装置测量快速开关支路电流，所述总电流检测装置测量 系统线路电流。The high-voltage short-circuit current limiting device according to any one of claims 6 to 10, further comprising a fast switching branch current detection device and a total current detection device; the fast switching branch current The detection device measures the current of the fast switching branch, and the total current detection device measures the system line current.
- 根据权利要求12的一种高压短路电流限制装置，其特征在于，所述装置还包括1套总控系统；所述总控系统接收快速开关支路电流检测装置和总电流检测装置信号，并对电流信号进行判断；所述总控系统连接所述快速开关模块中的储能单元，发送快速开关动作命令，并接收快速开关位置状态、储能状态信号。A high-voltage short-circuit current limiting device according to claim 12, characterized in that the device further includes a set of master control system; the master control system receives signals from the fast switching branch current detection device and the total current detection device, and Judging by the current signal; the master control system is connected to the energy storage unit in the quick switch module, sends the quick switch action command, and receives the quick switch position status and energy storage status signals.
- 基于权利要求13所述一种高压短路电流限制装置的控制方法，其特征在于，所述控制方法具体包括以下步骤：A control method of a high-voltage short-circuit current limiting device according to claim 13, wherein the control method specifically includes the following steps:第1步：快速开关模块处于合位，系统电流流过快速开关；Step 1: The fast switch module is in position and the system current flows through the fast switch;第2步：系统发生短路故障，所述总电流检测装置或快速开关模块支路电流检测装置将电流信号发送至总控系统，所述总控系统根据电流判据判断短路电流是否达到动作门槛值；到达门槛值后，总控系统向每个快速开关模块中储能及控制发送分闸指令，电磁斥力开关快速分闸到额定开距，待电流过零后自然将电流转移至限流电抗器；Step 2: A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system sends the opening command to the energy storage and control of each fast switch module, the electromagnetic repulsion switch quickly opens to the rated opening distance, and the current is naturally transferred to the current limiting reactor after the current crosses zero ;第3步：短路故障切除后，所述总控系统根据系统电压和电流恢复至正常值后控制快速开关模块合闸，重新将限流电抗器旁路。Step 3: After the short-circuit fault is removed, the master control system controls the quick switch module to close according to the system voltage and current returning to normal values, and then bypasses the current limiting reactor.
- 基于权利要求14所述一种高压短路电流限制装置的控制方法，其特征在于，所述第2步中的电流判据包括：电流幅值、相位和/或电流变化率判据。The control method for a high-voltage short-circuit current limiting device according to claim 14, wherein the current criterion in the second step includes: current amplitude, phase and / or current rate of change criterion.
- 根据权利要求13所述一种高压短路电流限制装置的控制方法，其特征在于，所述控制方法具体包括以下步骤：A control method of a high-voltage short-circuit current limiting device according to claim 13, wherein the control method specifically includes the following steps:第21步：快速开关模块处于合位，系统电流流过快速开关；Step 21: The fast switch module is in position and the system current flows through the fast switch;第22步：系统发生短路故障，所述总电流检测装置或快速开关模块支路电 流检测装置将电流信号发送至总控系统，所述总控系统根据电流判据判断短路电流是否达到动作门槛值；到达门槛值后，总控系统先向单个快速开关模块发送分闸指令，首先投入1组并联限流电抗器，如电流限制率达到要求则不再投入限流电抗器，如短路电流仍超标，总控系统继续向其他快速开关模块发送分闸指令，相应的电磁斥力开关快速分闸将限流电抗器投入；Step 22: A short-circuit fault occurs in the system, the total current detection device or the branch current detection device of the fast switch module sends a current signal to the total control system, and the total control system determines whether the short-circuit current reaches the action threshold according to the current criterion ; After reaching the threshold, the master control system first sends a trip command to a single fast switch module, first put in a group of parallel current limiting reactors, if the current limit rate meets the requirements, the current limiting reactors will no longer be put in, if the short circuit current still exceeds the standard , The master control system continues to send opening commands to other fast switch modules, and the corresponding electromagnetic repulsion switch quickly opens the current limiting reactor;第23步：短路故障切除后，所述总控系统根据系统电压和电流恢复至正常值后控制快速开关模块合闸，重新将限流电抗器旁路。Step 23: After the short-circuit fault is removed, the master control system controls the quick switch module to close after the system voltage and current return to normal values, and then bypasses the current limiting reactor.
- 基于权利要求16所述一种高压短路电流限制装置的控制方法，其特征在于，所述第22步中的电流判据包括：电流幅值、相位和/或电流变化率判据。The control method of the high-voltage short-circuit current limiting device according to claim 16, wherein the current criterion in the step 22 includes: current amplitude, phase and / or current rate of change criterion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242966.0A CN111092416B (en) | 2018-10-24 | 2018-10-24 | High-voltage short-circuit current limiting device and control method |
| CN201811242966.0 | 2018-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020082856A1 true WO2020082856A1 (en) | 2020-04-30 |
Family
ID=70330235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/099572 WO2020082856A1 (en) | 2018-10-24 | 2019-08-07 | Quick switch module and high-voltage short circuit current limiting device, and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111092416B (en) |
| WO (1) | WO2020082856A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114267559B (en) * | 2021-12-22 | 2023-05-02 | 西安交通大学 | A quick switch formula fault current limiting device for superhigh pressure system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023000A (en) * | 2013-01-09 | 2013-04-03 | 宁夏电力公司电力科学研究院 | Power grid current limiting device, power grid current limiter and power grid current limiting system |
| JP6042041B1 (en) * | 2016-02-05 | 2016-12-14 | 三菱電機株式会社 | DC circuit breaker |
| CN107154609A (en) * | 2017-05-02 | 2017-09-12 | 华北电力大学 | A kind of high reliability high-speed switch type fault current limiter |
| CN107171277A (en) * | 2017-07-03 | 2017-09-15 | 安徽恒凯电力保护设备有限公司 | A kind of zero loss depth current-limiting protection device that technology is cut-off based on Mintrop wave |
| CN108054741A (en) * | 2017-12-18 | 2018-05-18 | 安徽伊格瑞德电气设备有限公司 | One kind is based on multi-break high-pressure system current-limiting apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10135367B2 (en) * | 2013-12-16 | 2018-11-20 | Woodward, Inc. | Integrated soft start and safety shutdown |
| CN207367766U (en) * | 2016-09-29 | 2018-05-15 | 国家电网公司 | A kind of built-in transformer current-limiting apparatus |
| CN107293440B (en) * | 2017-08-14 | 2018-12-28 | 国家电网公司 | 363kV breaker based on rapid repulsion switch |
-
2018
- 2018-10-24 CN CN201811242966.0A patent/CN111092416B/en active Active
-
2019
- 2019-08-07 WO PCT/CN2019/099572 patent/WO2020082856A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023000A (en) * | 2013-01-09 | 2013-04-03 | 宁夏电力公司电力科学研究院 | Power grid current limiting device, power grid current limiter and power grid current limiting system |
| JP6042041B1 (en) * | 2016-02-05 | 2016-12-14 | 三菱電機株式会社 | DC circuit breaker |
| CN107154609A (en) * | 2017-05-02 | 2017-09-12 | 华北电力大学 | A kind of high reliability high-speed switch type fault current limiter |
| CN107171277A (en) * | 2017-07-03 | 2017-09-15 | 安徽恒凯电力保护设备有限公司 | A kind of zero loss depth current-limiting protection device that technology is cut-off based on Mintrop wave |
| CN108054741A (en) * | 2017-12-18 | 2018-05-18 | 安徽伊格瑞德电气设备有限公司 | One kind is based on multi-break high-pressure system current-limiting apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 艾绍贵等 (AI, SHAOGUI ET AL.): "330kV开关型零损耗故障限流装置的研制及人工短路试验 (Development and Short-circuit Experiment of 330 kV Switch-type No-loss Fault Current Limiter)", 智能电网 (SMART GRID), vol. 3, no. 4, 30 April 2015 (2015-04-30) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111092416B (en) | 2021-07-27 |
| CN111092416A (en) | 2020-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3490091B1 (en) | Novel combined dc circuit breaker and application method therefor | |
| Jovcic et al. | Low-energy protection system for DC grids based on full-bridge MMC converters | |
| CN206498192U (en) | A kind of hybrid DC superconducting current limiter based on energy fast transfer | |
| CN112886550B (en) | MMC flexible direct-current power grid self-adaptive fault clearing method based on source network coordination | |
| US20120187089A1 (en) | High-voltage, super-voltage and heavy current breaker | |
| CN107863761B (en) | High-voltage direct-current breaker with saturation reactor | |
| Li et al. | Application of flux-coupling-type superconducting fault current limiter on shipboard MVDC integrated power system | |
| US10756537B2 (en) | Short circuit fault current limiter | |
| WO2014107854A1 (en) | Power grid current-limiting apparatus, power grid current limiter, and power grid current-limiting system | |
| CN103023000B (en) | Grid current limiting device and grid current limiting device and grid current limiting system | |
| CN104900444A (en) | Direct current (DC) breaker topology structure and DC breaker control method | |
| CN102222893A (en) | Quick fault current restrictor based on carrier isolator | |
| CN108766830B (en) | Coupling type high-voltage direct-current breaker | |
| CN102570484B (en) | Control method of 10kV switch device | |
| CN108292845B (en) | Interconnection device for high voltage direct current electrical network | |
| CN105680411A (en) | DC solid state circuit breaker and broken circuit control method | |
| CN106921150A (en) | A kind of hybrid DC superconducting current limiter based on energy fast transfer | |
| CN103560512A (en) | High-reliability closed loop wiring method of medium voltage distribution network | |
| WO2020082856A1 (en) | Quick switch module and high-voltage short circuit current limiting device, and control method thereof | |
| Firouzi et al. | Effect of superconducting fault current limiters on successful interruption of circuit breakers | |
| CN110970880B (en) | Converter station containing RL type superconducting current limiter and DC circuit breaker and DC fault processing strategy thereof | |
| CN116316465A (en) | Current-limiting circuit breaker suitable for direct current interconnection and fault clearing method thereof | |
| CN1136638C (en) | Total-state compensating arc-extinguishing coil automatic tuning device | |
| CN106208106A (en) | A kind of paralleling compensating device based on compensation/current-limiting reactor | |
| Zhang et al. | Multi-Port Hybrid DC Circuit Breaker for DC Distribution Network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19875328 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19875328 Country of ref document: EP Kind code of ref document: A1 |