摘要
大规模交直流混联的复杂性和脆弱性使得电网的安全稳定问题日益突出,为快速准确模拟电网的故障特性,提出了特高压交直流混联电网故障反演方法。通过将电网仿真计算数据管理平台(powersystem database,PSDB)的方式离线模型与智能电网调度控制系统(D5000)的实时在线模型进行融合,生成完整准确的故障反演模型。该模型不仅解决了实时在线模型不含暂态参数的问题,而且克服了方式离线模型无法反映电网实时潮流的困难,将故障反演耗时由两三个星期缩短到几秒,大大提高了方式计算人员的工作效率,满足故障反演对时效性和精确性的要求。并基于该模型对电网进行仿真计算分析,准确模拟电网故障发生过程中电气量的变化。该系统已在国家电网仿真中心成功安装并投入使用,针对国调和华中电网进行了故障反演分析,验证了所提方案的科学有效性。
The security and stability problems of power grid have become increasingly prominent for the complexity and fragility of large-scale hybrid AC/DC.In order to quickly and accurately simulate the fault characteristics of power grid,a fault inversion method is proposed for the hybrid UHV AC/DC power grid.A complete and accurate fault inversion model is generated by integrating the mode offline model of Power System Data Base(PSDB)with the real-time online model of Smart Grid Dispatching and Control System,which can not only solve the problem of missing transient parameters of the real-time online model,but also overcome the difficulty that the mode offline model cannot reflect the power flow of power grid in real-time.Besides,this model shortens fault inversion time from 2 to 3 weeks to a few seconds,as a result,greatly improving the working efficiency of the computation staff and meeting the requirements of timeliness and accuracy of fault inversion calculation.The model is used to simulate the power grid,and the results shows that it can accurately simulate the changes of electricity volume in the process of power grid fault.The system has been installed successfully and put into use in State Grid Simulation Center.The fault inversion analysis is carried out for State Grid Dispatch Center and Central China power grid,and the results have verified the effectiveness of the proposed scheme.
作者
王兵
贾育培
严剑峰
金一丁
WANG Bing;JIA Yupei;YAN Jianfeng;JIN Yiding(State Key Laboratory of Power Grid Safety and Energy Conservation(China Electric Power Research Institute),Beijing 100192,China;National Electric Power Dispatching and Control Center,Beijing 100031,China)
出处
《中国电力》
CSCD
北大核心
2020年第6期64-71,共8页
Electric Power
基金
国家电网公司科技项目(XTB21201804117)。
关键词
方式离线模型
实时在线模型
故障反演模型
仿真计算分析
特高压交直流混联电网
mode offline model
real-time online model
fault inversion model
simulation calculation and analysis
hybrid UHV AC/DC power grid
