摘要
江苏电网直流输电发展迅猛,未来将通过直流输电受入大量功率。在电网运行过程中,交流电网故障将通过换流站母线对直流输电运行产生影响,可能造成直流输电发生换相失败等,而目前电力系统稳定分析所采用的机电暂态仿真手段可能无法准确反映该动态过程。文中分别采用机电仿真软件BPA和机电-电磁混合仿真软件PSModel(power system model)2种仿真工具,对比仿真分析和研究了江苏电网交流故障对直流输电运行的影响,相关结论为电网运行分析工作提供建议和参考。
With the rapid development of HVDC（ high voltage direct current） in Jiangsu Power Grid,large amount of electric power would be integrated through HVDC in the future. It is found that fault of the AC power grid would affect the operation of HVDC through the bus voltage of the converter station,which may lead to commutation failure. However,electromechanical simulations,which are used for power system stability analysis nowadays,may not be able to accurately reflect the dynamic process. In this paper, by using BPA and PSModel, electromechanical simulations as well as electromechanical and electromagnetic hybrid simulations are performed to study the impact of Jiangsu Power Grid fault on the operation of HVDC,and the conclusions are supposed to be helpful for power system analysis.
出处
《电力工程技术》
2017年第3期7-11,27,共6页
Electric Power Engineering Technology
基金
国家自然科学基金资助项目(51607092)
国家电网公司科技项目(考虑宽频特性交互影响的交直流混联电网仿真技术研究)
关键词
特高压直流
换相失败
机电仿真
机电-电磁混合仿真
ultra-high voltage direct current（UHVDC）
commutation failure
electromechanical simulation
electromechani cal and electromagnetic hybrid simulation
