基于传输线切换的电网安全校正策略分析

Analysis of Power Network Safety Correction Strategy Based on Transmission Line Switching

为了完善电网安全校正策略,引入了传输线切换操作。针对潮流校正模型中的关键点以及快速求解难点,构建拓扑结构可变情况下的MINSOCP潮流模型,并融合多种校正策略构建改进的安全校正模型。通过缩减TS变量数目、引入支路开断分布因子计算综合影响指标,修正目标函数,加速模型求解。经过IEEE57节点算例验证,结果表明传输线切换操作可以显著降低校正代价,并且融合多种手段的校正策略调控效果最佳,为电网安全校正策略提供了可参考方案。

In order to improve the power grid security correction strategy,the transmission line switching operation is introduced.Aiming at the key points of establishing the power flow correction model and solving difficulties quickly,the MINSOCP power flow model under the variable topology is constructed,and the improved security correction model is constructed by integrating various correction strategies.By reducing the number of TS variables and introducing the branch breaking distribution factor to calculate the comprehensive influence index,the objective function is modified and the model solution is accelerated.The results show that the transmission line switching operation can significantly reduce the correction cost,and the correction strategy combining various means has the best effect,which provides a reference scheme for the power grid security correction strategy.