摘要
高压直流控制系统通过同步触发控制实现对换流器的控制作用。文中分别从同步和触发2个环节对2种具有代表意义的同步触发控制原理进行详细介绍,其中一种的特色是在同步环节采用环前滤波器进行谐波滤除和不平衡处理,触发环节为等间隔触发,以SIEMENS同步触发控制为代表;另外一种的特色是在触发环节含有辅助触发控制和触发角限制,同步环节无环前滤波器,以ABB同步触发控制为代表。然后,对2种同步触发控制在交流故障下的性能进行分析和对比,并将2种同步触发控制的特点进行结合,提出了改进型同步触发控制,建立了其小信号模型。最后,进行了阶跃响应仿真对比和交流故障测试,仿真测试结果验证了改进系统抑制后续换相失败的能力更强,同时验证了改进方向的正确性。
The control function of the high voltage direct current(HVDC) control system to the converter is realized by synchronous firing control. This paper describes two representative synchronous firing control principles in detail from the two links of synchronizing and firing. One of them has the characteristics that harmonic filtering and unbalance processing are carried out by the prefilter in the synchronizing link, and the firing link is equal-interval firing, which is represented by the SIEMENS synchronous firing control. The other has the feature that the firing link contains auxiliary firing control and firing angle limitation,and the synchronous link has no prefilter, which is represented by the ABB synchronous firing control. Then the performances of two types of synchronous firing control are analyzed and compared under AC faults. The characteristics of two types of synchronous firing control are combined, and an improved synchronous firing control is proposed. Then its small-signal model is established. Finally, the step response simulation comparison and AC fault test are carried out. The simulation and test results verify that the improved system has a stronger ability to suppress subsequent commutation failures, and the improvement direction is corrective.
作者
吴秋媚
余震霄
傅闯
文兆新
郑睿娜
汪娟娟
WU Qiumei;YU Zhenxiao;FU Chuang;WEN Zhaoxin;ZHENG Ruina;WANG Juanjuan(School of Electric Power,South China University of Technology,Guangzhou 510641,China;State Key Laboratory of HVDC(Electric Power Research Institute of China Southern Power Grid Company Limited),Guangzhou 510663,China;Yunnan Electric Power Dispatching and Control Center,Kunming 650011,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2023年第1期183-191,共9页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51777079)
广东省自然科学基金资助项目(2020A1515011541)
国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U1766213)。
关键词
高压直流输电
同步触发控制
交流故障
触发脉冲
最小换相裕度控制
换相失败
high voltage direct current(HVDC)transmission
synchronous firing control
AC fault
firing pulse
minimum commutation margin control
commutation failure
作者简介
吴秋媚(1998—),女,硕士研究生,主要研究方向:高压直流输电。E-mail:3220283272@qq.com;余震霄(1998—),男,硕士研究生,主要研究方向:高压直流输电。E-mail:812248395@qq.com;傅闯(1973—),男,博士,教授级高级工程师,主要研究方向:电力系统稳定与控制、高压直流输电等。E-mail:fuchuang@csg.cn;通信作者:汪娟娟(1974—),女,博士,教授,主要研究方向:电力系统稳定与控制、高压直流输电等。E-mail:epjjwang@scut.edu.cn。
