基于改进MCCIPM的含TCPST电力系统最优潮流计算

随着可控移相器(TCPST)在现代电力系统中应用水平的逐渐提高,计及TCPST的系统最优潮流(OPF)计算迎来了新的挑战。文中提出了一种基于改进内点法的含TCPST电力系统OPF计算方法。首先,结合TCPST接入系统的等效功率注入模型,以系统有功网损最小为目标建立含TCPST的最优潮流模型;其次,为提高收敛速度,文中针对多中心-校正内点法(MCCIPM)进行改进,提高了仿射方向迭代步长并重新配置关键映射参数;最后,基于改进后的MCCIPM,在IEEE 14、IEEE 30和IEEE 118节点网络完成OPF计算。测试结果表明,TCPST具有控制线路潮流分布的能力,验证了文中计算方法在求解效率上的优越性。

Optimal power flow calculation of power system containing TCPST based on improved MCCIPM

As more and more flexible AC transmission devices are used in modern power systems,the research of optimal power flow (OPF) with thyristor controlled phase shifting transformer (TCPST) is facing new challenges. In order to ensure the security of the system,the equivalent power injection model of the TCPST access system is combined to establish the optimal power flow model with TCPST with the objective function of the minimum active power loss. In order to improve the convergence speed,the multicenter correction interior point method is improved. The iteration step of the affine direction is improved and the key mapping parameters is reconfigured. Based on the improved multicenter correction interior point method,the optimal power flow calculation test is completed in IEEE 14,IEEE 30 and IEEE 118 node networks,and the control ability of TCPST to line power flow distribution is tested. The test results show that the improved interior point method proposed in this paper is feasible and practical.