基于SSSC的电网潮流计算

Power flow calculation of power grid based on SSSC

基于静止同步串联补偿器(SSSC)静态模型,将SSSC对网络的影响转化为节点等效注入功率,推导节点注入功率与SSSC控制参数的关系。根据给定功率控制目标建立新的状态方程,提出了一种在给定功率控制目标条件下含SSSC网络的潮流算法。该方法在计算过程中不修改原有网络的节点导纳矩阵,只在原有网络潮流方程的基础上,选取新的状态变量,将SSSC对网络的影响转移到对潮流方程的修正中去,并通过算例验证了该方法的有效性。

Based on the static model of synchronous static series compensator( SSSC),the influence of SSSC on power grid was translated into the equivalent injected power on the nodes. The relation between the node injected power and SSSC control parameters was deduced. According to given power control target,new state equation was established,and a power flow calculation method for power grid containing SSSC under condition of given power control target was proposed. In the calculation process of the method,it is not needed to modify the original grid node admittance matrix. Based on original grid power flow equation,the new state variables were selected,and the influence of SSSC on the power grid was transferred to the amendment of the power flow equation. The effectiveness of the method was verified by practical example.