| 自取能自触发式晶闸管过压保护电路 |
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| 引用本文： | 程志明,孙辉,孟子玉,程金海,周先杰,曹利芹.自取能自触发式晶闸管过压保护电路[J].电气传动,2020(1):100-102. |
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| 作者姓名： | 程志明 孙辉 孟子玉 程金海 周先杰 曹利芹 |
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| 作者单位： | 天津电气科学研究院有限公司;歌美飒风电（天津）有限公司;敬业集团 |
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| 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。
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| 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 |
Self-powered & Self-trigger for SCR Overvoltage Protection Circuit |
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| CHENG Zhiming,SUN Hui,MENG Ziyu,CHENG Jinhai,ZHOU Xianjie,CAO Liqin.Self-powered & Self-trigger for SCR Overvoltage Protection Circuit[J].Electric Drive,2020(1):100-102. |
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| Authors: | CHENG Zhiming SUN Hui MENG Ziyu CHENG Jinhai ZHOU Xianjie CAO Liqin |
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| Affiliation: | (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) |
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| Abstract: | 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. |
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| Keywords: | reverse recovery charge thyristor break-over diode(BOD) self-powered self-trigger digitization |
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