【摘要】 该文研究了面向节点,随运行工况变动跟踪估计电网等值参数的方法。在推导扩展P-V曲线数学表达式的基础上,提出了角差偏移约束条件下的比函数极小化寻优搜索的方法,来估计电网等值参数。在不同运行工作点下,该方法能够有效地跟踪估计电网等值参数,计及了电网非线性的影响,具有较好的数值稳定性。该文方法比较适用于在互联电网联络线装设有FACTS装置的条件下对任一侧电网的跟踪等值。更多还原

【Abstract】 A tracking estimation method of network equivalent parameters of facing nodes is researched with the variation of operation point. Based on the deducedmathematical formula of extended P-V curve, The searching method of the ratio function minimization to estimate theequivalent parameters under the restraint condition of the angle difference excursion is proposed. Under different operationpoints. This method can track and estimate the systemequivalent parameters more accurately. The influence of the nonlinearity of the power system is considered. The methodpossesses a good numerical stability, and can be applied to the equivalence of any side of interconnected networks connected by a tie line with FACTS.更多还原