电力电子装置的过电压保护技术应用 - 华北电力设计院.pdf

中国• 海南 中国科协2004 年学术年会电力分会场暨中国电机工程学会 2004 年学术年会论文集 739 电力电子装置的过电压保护技术应用 蓝元良，印永华，汤广福，武守远 （中国电力科学研究院，北京 100085 ） THE APPLICATION OF OVERVOLTAGE PROTECTION OF THE POWER ELECTRONICS EQUIPMENTS Lan Yuan-liang,Yin Yong-hua,Tang Guang-fu,Wu Shou-yuan ， （China Electric Power Research Institute，Beijing 100085 ） ABSTRACT: In this paper,some conventional equipments of 采用的保护设备有保护间隙、管型避雷器、阀型 overvoltage protection employed in the high voltage power 避雷器、无间隙氧化锌避雷器等。管型避雷器、 system such as gap,gap SiC varistor, gapless ZnO varistor (also 阀型避雷器由于其结构复杂、保护性能差等缺点 called as Metal Oxidized Varistor, MOV) and so on ,are 逐渐退出历史的舞台。由于受环境条件的影响以 summarized and compared with each other. Then the characters 及灭弧性能差等缺点，保护间隙的应用也受到了 of the gapless MOV and thyristor mainly used for overvoltage 限制。现在使用的主动点火保护间隙技术也需要 protection are described respectively.Based on the development of the technology of overvoltage protection of Power 解决高电位点火电源以及点火同步的问题。无间 Electronics (PE) equipment of large capacity,for instance, High 隙氧化锌避雷器因其具有保护性能稳定、吸收浪 Voltage Direct Current(HVDC),Static Var Compensator(S- 涌电流能量大、使用寿命长等优点，现已得到了 VC),Thyristor controlled Series Compensator et al., the main 普遍的应用。近年来由于电力电子技术的发展， schemes of overvoltage protection for such equipments are 特别是晶闸管等电力电子器件的制造水平提高以 explained and classified in the view of the technology of 及价格降低，使其在电力系统中得到了更广泛应 overvoltage protection of PE equipment and the technology of 用。大功率电力电子装置，如高压直流输电 overvoltage protection based on PE equipment .The conclusion （HVDC ） 的 换 流 站 、 静 止 无 功 补 偿 装 置 and outlook of the technology of PE and its overvoltage