SVG配置容量对LCC换相失败抵御能力仿真研究OA
Simulation Study on the Ability of SVG Configuration Capacity to Resist LCC Commutation Failure
基于电网换相换流器的高压直流输电(LCC-HVDC)是当下高压直流输电的重要技术形式.由于换流阀由半控型器件晶闸管构成,逆变侧换流站换相失败故障成为影响LCC正常安全运行的关键问题.配置静态无功发生器(SVG)进行无功补偿能够有效提升换流站换相失败抵御能力.从机理上探讨了SVG无功补偿对LCC换相失败故障的影响,并进行了仿真验证.首先,建立LCC数学模型并分析换相失败现象的产生机理;其次,分析了SVG无功补偿对换相失败过程的影响;最后,在Simulink中搭建模型进行了仿真验证.
Line commutated capacitor high-voltage direct current(LCC-HVDC)is an important technical form of high-voltage direct current transmission.Since the converter valve was composed of semi-controlled device thyristors,the commutation failure of the inverter-side converter station has become a key issue affecting the normal and safe operation of LCC.Configuring static var generator(SVG)for reactive power compensation can effectively improve the converter station's ability to resist commutation failure.The influence of SVG reactive power compensation was discussed on LCC commutation failure from a mechanism perspective,and simulation verification was conducted.First,the mathematical model of LCC was established and the mechanism of commutation failure was analyzed.Secondly,the influence of SVG reactive power compensation on the commutation failure process was analyzed.Finally,the model was built in Simulink for simulation verification.
李海烽;陈斌;陈晋;胡曦文;刘又宾
中国能源建设集团江苏省电力设计院有限公司,江苏 南京 211102中国能源建设集团江苏省电力设计院有限公司,江苏 南京 211102中国能源建设集团江苏省电力设计院有限公司,江苏 南京 211102中国能源建设集团江苏省电力设计院有限公司,江苏 南京 211102南京工程学院电气工程学院,江苏 南京 211167
信息技术与安全科学
基于电网换相换流器的高压直流输电换相失败无功补偿静态无功发生器
line commutated capacitor high-voltage direct current(LCC-HVDC)commutation failurereactive power compensationstatic var generator(SVG)
《电气传动》 2026 (2)
12-19,8
江苏省基础研究计划(自然科学基金)项目(BK20210048)中电工程科研项目"嵌入式交改直关键技术研究"(DG2-D04-2023)
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