高压直流断路器中电磁斥力快速驱动器研究  

Research on an Ultrafast Driver for HVDC Circuit Breaker with Electromagnetic Repulsion Mechanism

作　　者：黄瑜珑[1] 张祖安[1] 温伟杰[1] 高树同 程铁汉 刘家妤[3] 

机构地区：[1]清华大学电机系电力系统国家重点试验室,北京100084 [2]河南省平高电气股份有限公司,平顶山467001 [3]上海市电力公司电力科学研究院,上海200437

出　　处：《高电压技术》2014年第10期3171-3178,共8页High Voltage Engineering

基　　金：国家电网公司科技项目(20122001796);国家高技术研究发展计划(863计划)(2011AA05A121)~~

摘　　要：应用在基于电压源型换流的多端直流输电系统中的高压直流断路器,其关键部件机械式快速隔离开关在断路器开断故障电流时需要在几ms内分闸到位。为此,提出了基于电磁斥力的快速驱动器作为快速隔离开关的操动机构。通过对电磁斥力机构的线圈、金属盘、控制电流和行程特性的基于等效电路法的建模仿真及装置试验,研究了其在几ms内操动行程达25 mm的可行性。结果表明:仿真结果和试验结果具有一致性;电磁斥力快速驱动器的操动行程能在几ms内达到25 mm。在验证了仿真方法正确的基础上,根据仿真结果提出了电磁斥力机构的一般设计原则:线圈的内径和金属盘的内径,线圈的外径和金属盘的外径都应该设计成一样大;金属盘的厚度对于不同的设计对应有最优的参数;线圈和金属盘的初始距离应尽量小。As a key component of the HVDC circuit breaker used in voltage source converter based multi-terminal HVDC（VSC-MTDC） transmission system, mechanical fast disconnector needs to complete opening in a few milliseconds whenthe HVDC circuit breaker interrupts the fault current. Hence, we proposed an ultrafast driver with electromagnetic repul-sion mechanism as the actuator for fast disconnector. We studied the electromagnetic repulsion mechanism＇s coil, metaldisk, control current and displacement characteristics through numerical simulation based on the equivalent circuit me-thod and some experiments with prototypes, and discussed the possibility of the actuator stroke reaching to 25 mm in fewmilliseconds. It is found that the results of numerical simulation are in accordance with the experimental results, as well asthat the actuator is able to actuate 25 mm in a few milliseconds. By using the verified simulation method, some generalprinciples for designing the electromagnetic repulsion mechanism based on the simulation results can be proposed： theinner diameter of coil should be the same as that of metal plate, so is the outer diameters of coil and metal plate; the metalplate has optimum thickness according to different mechanisms, while the initial distance between coil and metal plateshould be as small as possible.

关 键 词：多端直流输电 高压直流断路器 电磁斥力 快速驱动器 等效电路法 设计原则 

分 类 号：TM561[电气工程—电器]