摘要
电网作为网络型能量载送物理系统,在不同载流过渡模式下都具有相应的静态电压稳定边界,该边界的快速预估对电网在线电压稳定安全防控具有重要参考价值。因此,文章提出了一种计及参数追踪阶段特性的电网静态电压稳定边界(static voltage stability region boundary,SVSRB)预估方法。首先阐述了静态电压稳定边界构建方法,并分析了构建过程中可能出现的失效场景;其次,针对该构建方法的缺陷,分别在预估和校正阶段提出了计及曲线外推和策略转换的边界追踪改进方法,避免了预估过程的复杂计算和校正过程中的迭代发散,并且能够利用中间计算信息,给出边界曲线的分段线性估计解析式;最后,经仿真算例验算,所提方法相较原始方法具有一定优越性。
As a network-based energy carrying physical system,power grid has corresponding static voltage stability boundary under different current carrying transition modes.The fast estimation of this boundary has important reference value for the safety prevention and control of power grid online voltage stability.Therefore,this paper proposes an estimation method of power grid static voltage stability region boundary (SVSRB) considering the characteristics of parameter tracking stage.Firstly,the construction method of static voltage stability boundary is described,and the possible failure scenarios in the construction process are analyzed.Secondly,aiming at the defects of this construction method,an improved boundary tracking method considering curve extrapolation and policy transformation is proposed in the estimation and correction stages,which avoids the complex calculation in the estimation process and the iterative divergence in the correction process,and can use the intermediate calculation information to give the analytical formula of piecewise linear estimation of boundary curve.Finally,a simulation example shows that the proposed method has some advantages over the original method.
作者
赵高尚
刘道伟
杨红英
杨学涛
杜三恩
许鹏飞
ZHAO Gaoshang;LIU Daowei;YANG Hongying;YANG Xuetao;DU Sanen;XU Pengfei(China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China)
出处
《电力信息与通信技术》
2022年第9期73-83,共11页
Electric Power Information and Communication Technology
基金
国家电网有限公司总部科技项目“信息驱动的大电网临界稳定边界特征提取与表征”(5100-202055293A-0-0-00)。
关键词
稳定边界
静态电压稳定
边界预估
曲线外推
策略转换
stable boundary
static voltage stability
boundary estimation
curve extrapolation
policy transformation
