自取能自触发式晶闸管过压保护电路  

Self-powered & Self-trigger for SCR Overvoltage Protection Circuit

作　　者：程志明 孙辉 孟子玉 程金海 周先杰 曹利芹 CHENG Zhiming;SUN Hui;MENG Ziyu;CHENG Jinhai;ZHOU Xianjie;CAO Liqin(Tianjin Research Institute of Electric Science Co.,Ltd.,Tianjin 300301,China;Gamesa Wind(Tianjin)Co.,Ltd.,Tianjin 300384,China;Jingye Group,Shijiazhuang 050400,Hebei,China)

机构地区：[1]天津电气科学研究院有限公司,天津300301 [2]歌美飒风电(天津)有限公司,天津300384 [3]敬业集团,河北石家庄050400

出　　处：《电气传动》2020年第1期100-102,共3页Electric Drive

摘　　要：在晶闸管(SCR)的高压串联应用场合,由于反向恢复电荷Qrr的存在,将产生关断过电压,此电压对其串联技术提出了较高的要求。在TCR+FC型静止型动态无功补偿装置(SVC)的实际应用中,尽管已采用了动静态均压、器件冗余等技术,高压串联的晶闸管仍经常被过压击穿。目前,一种以击穿二极管(BOD)元件为核心的自取能自触发式晶闸管过压保护电路得到广泛应用,该电路具有响应快、抗干扰能力强、数字化等诸多优点。In the SCR applications of the high-voltage series,because of the existence of reverse recovery charge Qrr,the off-over-voltage will be produced,this voltage put forward higher requirements to SCR series.In the application of TCR+FC static var compensator(SVC),the SCR is often broken due to over-voltage,although the technologies of voltage-balance or element-redundance is used.In current,the technology of the BOD element as the core of selfpowered&self-trigger for SCR over-voltage protection is used extensively.The circuit has many advantages,such as fast response,strong anti-interference ability,digitization and so on.

关 键 词：反向恢复电荷 晶闸管 击穿二极管 自取能 自触发 数字化 

分 类 号：TM862[电气工程—高电压与绝缘技术]