本文選題：模塊化多電平換流器 + 柔性直流輸電��； 參考：《電網(wǎng)技術(shù)》2017年07期

【摘要】：直流雙極短路故障是柔性直流輸電(voltage source converter based high voltage direct current,VSC-HVDC)系統(tǒng)最嚴重的故障之一。具有橋臂阻尼的半橋型模塊化多電平換流器在故障后能加快故障電流的衰減速度,實現(xiàn)系統(tǒng)快速重啟動�；诤瑯虮圩枘岬腍BMMC(half bridge sub-module modular multilevel converter)-HVDC系統(tǒng)建立了一套完整的直流雙極短路故障機理分析的解析模型,分別對換流器閉鎖前,換流器閉鎖后和交流斷路器斷開后3個階段的故障機理進行了詳細分析,并給出了每個階段對應的橋臂電流解析表達式。通過此解析模型,可快速準確地計算直流雙極短路故障發(fā)生后的故障電流及故障衰減時間,為其工程應用提供理論依據(jù)。最后,基于Matlab/Simulink仿真軟件搭建了含橋臂阻尼的HBMMC-HVDC系統(tǒng)仿真模型,通過仿真驗證了該解析模型的可行性與準確性。
[Abstract]:DC bipolar short circuit fault is one of the most serious faults in the voltage source converter based high voltage direct current, VSC-HVDC system. The half bridge modular multilevel converter with bridge arm damping can accelerate the failure and deceleration of the fault current after the fault, and realize the rapid restart of the system. Based on the bridge arm resistance The HBMMC (half bridge sub-module modular multilevel converter) -HVDC system has established a complete set of analytical models for the analysis of the fault mechanism of the DC bipolar short circuit. The fault mechanism of the 3 stages after the interlocking of the converter, the interlock and the interrupting of the AC circuit breaker are analyzed in detail, and each stage is given. The analytical expression of the bridge arm current should be expressed. Through this analytical model, the fault current and the failure time of the DC bipolar short-circuit fault can be quickly and accurately calculated. The theoretical basis for its engineering application is provided. Finally, a simulation model of the HBMMC-HVDC system with bridge arm resistance to Nepal is built based on the Matlab/Simulink simulation software. The feasibility and accuracy of the analytical model are proved.
【作者單位】： 西安許繼電力電子技術(shù)有限公司;許繼集團有限公司;國網(wǎng)山東省電力公司電力科學研究院;
【基金】：國家科技重大專項(2015ZX02301003)~~
【分類號】：TM721.1

【相似文獻】

相關期刊論文 前10條

1 楊振萍,潘學軍;交流電橋臂的配置與靈敏度[J];四川師范大學學報(自然科學版);1999年02期

2 官二勇;宋平崗;葉滿園;;基于三次諧波注入法的三相四橋臂逆變電源[J];電工技術(shù)學報;2005年12期

3 羅耀華;許鐵巖;;一種三相四橋臂空間矢量脈寬調(diào)制方法[J];電力電子技術(shù);2013年01期

4 余雷;肖蕙蕙;李山;;三相四橋臂逆變電源控制策略[J];重慶理工大學學報(自然科學);2013年04期

5 劉秀，

本文編號：1931082