摘要
基于集成门极换流晶闸管(IGCT)的混合换相换流阀(HCC)具备主动关断的能力,因此可以解决常规高压直流输电技术领域的换相失败技术难题,但是现有的试验技术方法无法对其主动关断能力进行有效验证。针对这一问题,此处开展了HCC电气设计和组件研制,并且提出一种基于合成回路试验平台的新型换流阀主动关断验证方法。创新试验方法通过调整控制时序,利用电流源和电压源的叠加产生足够大的关断电流,从而对HCC换流阀组件主动关断换流能力进行充分验证。试验结果显示,新型换流阀组件可以关断5 000 A以上的大电流,并且可以连续作用3个周期以上。试验结果证明了HCC具有足够的关断能力,可以解决所有交流系统故障导致的换相失败问题。
The hybrid commutated converter(HCC)based on integrated gate commutated thyristor(IGCT)has the ab-ility to actively turn off,which can solve the technical difficulty of commutation failure in conventional high-voltage direct current transmission technology.However,existing experimental methods cannot effectively verify its active turn-ing off ability.In response to this issue,HCC electrical design and component development is carried out,and pro-posed a new active turn-off verification method for converter valve component based on a synthetic circuit test plat-form.The innovative experimental method adjusts the control timing and utilizes the superposition of current and volt-age sources to generate a sufficiently large turn-off current,thereby fully verifying the active turn-off and commutation capability of HCC valve component assembly.The experimental results show that novel converter valve component can turn off large currents of over 5000 A and can function continuously for more than 3 cycles.The test results demon-strate that HCC has sufficient turnoff capability to solve all commutation failure problems caused by AC system faults.
作者
王森
王宗泽
张嘉涛
姚德贵
WANG Sen;WANG Zong-ze;ZHANG Jia-tao;YAO De-gui(State Grid Henan Electric Power Company,Zhengzhou 450018,China;不详)
出处
《电力电子技术》
2024年第10期15-18,共4页
Power Electronics
基金
国家电网有限公司科技项目(SGHADK00PJJS22-00519)
国家自然科学基金联合基金集成项目(U2166600-01)。
关键词
高压直流输电
换相失败
混合换相换流阀
high-voltage direct current
transmission commutation failure
hybrid commutated converter
