基于连续参数追踪的静态电压稳定域边界迁移构建新方法

A New Method for Transfer Construction of Static Voltage Stability Region Boundary Based on Continuous Parameter Tracking

静态电压稳定域(static voltage stability region,SVSR)是监控电网电压安全运行的有效手段,其边界的求取是SVSR技术应用的关键。推导了简单系统单机单负荷模型的SVSR解析边界,在此基础上,针对复杂系统静态电压稳定域边界(static voltage stability region boundary,SVSRB)构建问题,提出了计及拓扑相关性的稳定域边界模型,并通过预估-校正方法完成了该模型在连续参数变化下的追踪求解。该方法能够以任一边界点为初值,快速迁移至整个稳定边界,实现了边界求取的"以点带面"。最后通过仿真算例验证了所提方法的准确性和时效性,具有一定的工程价值。

Static voltage stability region(SVSR)is an effective measure to monitor safe operation of grid voltage.SVSR boundary is the key to application of SVSR technology.Therefore,this paper deduces the SVSR analytic boundary of a simple single-machine single-load system model.On this basis,a stability region boundary model considering topological correlation is proposed for boundary construction of static voltage stability domain of complex systems,and prediction-correction method completes the tracking solution of the model under continuous parameter changes.The method can quickly move to entire stability boundary solution set with any boundary point as initial value,and achieve"point overview"of the boundary.Finally,accuracy and timeliness of the proposed method are verified with simulation examples,having certain engineering value.