直流断路器用IGBT正向恢复特性实验建模

doi:10.11930/j.issn.1004-9649.202006108

中国电力 ›› 2021, Vol. 54 ›› Issue (1): 54-61.DOI: 10.11930/j.issn.1004-9649.202006108

• 国家“十三五”智能电网重大专项专栏：（四）柔性直流电网技术、装备与工程 • 上一篇下一篇

直流断路器用IGBT正向恢复特性实验建模

沈弘¹, 仝翠芝¹, 东野忠昊¹, 齐磊¹, 王谦²

1. 新能源电力系统国家重点实验室（华北电力大学），北京 102206;
2. 国网北京电力科学研究院，北京 100075

收稿日期:2020-06-05 修回日期:2020-11-03 出版日期:2021-01-05 发布日期:2021-01-11
作者简介:沈弘(1995—)，男，博士研究生，从事先进输变电装备电磁兼容技术的研究，E-mail：shenhong1995@outlook.com;齐磊(1978—)，男，通信作者，博士，教授，从事大容量柔性输电装备研制及电磁特性研究，E-mail：qilei_ncepu@126.com
基金资助:
国家电网公司科技项目(±500 kV柔直工程电磁环境及特殊设备性能检测与评估技术研究，52010118001P)

Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker

SHEN Hong¹, TONG Cuizhi¹, DONGYE Zhonghao¹, QI Lei¹, WANG Qian²

1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;
2. State Grid Beijing Electric Power Research Institute, Beijing 100075, China

Received:2020-06-05 Revised:2020-11-03 Online:2021-01-05 Published:2021-01-11
Supported by:
This work is supported by Science and Technology Project of SGCC (Research on Electromagnetic Environment and Special Equipment Performance Testing and Evaluation Technology of ±500 kV VSC-HVDC Project, No.52010118001P).

摘要/Abstract

摘要： 直流断路器是柔性直流电网故障清除的主流手段。混合式直流断路器动作前，转移支路IGBT处在正栅极电压的零电压零电流状态，当转移支路电流开始上升时，由IGBT正向恢复过程产生的集-射极电压过冲一旦满足IGBT过流监测判据，将会引起保护误动进而降低装备运行可靠性。针对直流断路器工况下IGBT出现的正向恢复现象，通过建立的IGBT大电流开通实验平台获取了不同电流上升过程中IGBT集-射极电压波形，基于分阶段数学表征建立了能够反映IGBT正向恢复特性的I-U映射关系。与实测结果相比，该模型计算所得的集-射极电压峰值相对误差小于10%，高于过流监测阈值电压的持续时间相对误差小于15%，可支撑直流断路器所用IGBT的过流监测判据的合理制定。

关键词: 直流断路器, 正向恢复, 行为模型, IGBT, 过流监测

Abstract: DC circuit breaker is the main means to clear the faults in VSC-HVDC power grid. Before action of the hybrid DC circuit breaker, the IGBT in the transfer branch is in a state of zero voltage and zero current. When the current of the transfer branch begins to rise, and once the voltage overshoot of collector-emitter produced in the forward recovery process of IGBT meets the IGBT's over-current monitoring criterion, the protection will malfunction, consequently reducing the operating reliability. Aiming at the forward recovery phenomenon of IGBT, a high-current turn-on experimental platform of IGBT is built to obtain the IGBT’s collector-emitter voltage waveforms corresponding to different current waveforms. Based on the staged mathematical fitting, an I-U mapping relationship that reflects the forward recovery characteristics of the IGBT is established. Compared with the experimental results, the relative error of peak collector-emitter voltage is less than 10%, and the duration relative error of over-current monitoring threshold voltage is less than 15%. The model can help to reasonably formulate the over-current monitoring criterion of IGBT used in DC circuit breaker.

Key words: DC circuit breaker, forward recovery, behavioral model, IGBT, over-current monitoring

沈弘, 仝翠芝, 东野忠昊, 齐磊, 王谦. 直流断路器用IGBT正向恢复特性实验建模[J]. 中国电力, 2021, 54(1): 54-61.

SHEN Hong, TONG Cuizhi, DONGYE Zhonghao, QI Lei, WANG Qian. Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker[J]. Electric Power, 2021, 54(1): 54-61.

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直流断路器用IGBT正向恢复特性实验建模

Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker

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直流断路器用IGBT正向恢复特性实验建模

Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker

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