考虑控制动作顺序影响的地区电网无功优化实时控制系统的研究

Investigation of Regional Real-Time var Optimization Control System Considering the Impact of the Order of Control Actions

对地区电网的无功实时优化问题进行了分析,设计了地区电网无功优化实时控制系统。利用非线性规划最优潮流算法进行无功优化计算,采用了带约束条件松弛的改进方法改善收敛性,提高了收敛速度且具有较高精度。并考虑了控制动作顺序对优化控制效果的影响,设计了改进的优化控制策略,根据有功网损控制效力及电压控制效力来分别确定正常情况下及故障情况下控制动作的先后顺序,避免了控制量同时变化引起的振荡。用IEEE-30节点系统和实际地区电网验证了算法的有效性。结果表明,本文提出的算法和控制策略是有效和实用的。

This paper presents a regional real-time var optimization control system using non-linear programming to complete the var optimization, and adopting a method of constraints slacking to improve the convergence. More over, This paper also considers the impact of the order of control actions on the effect of the control, introduces a improved control strategy which determines the order of control actions under normal conditions, and contingencies by active losses control effectiveness and voltage control effectiveness respectively. The proposed system is tested by IEEE 30-bus standard system and a real regional system, and the results verify the feasibility and reasonableness of the proposed system.