CAJ | 학술논문

针对区域电网难以通过获取外网实时状态信息来实施静态电压稳定控制的问题，提出了一种基于外部网络单点等值，并考虑区域电网静态电压稳定裕度的广域切负荷控制策略。首先采用戴维南等值方法对区域电网的外部系统进行等值。然后以区域电网在负荷增长状态下的潮流等式约束作为静态电压稳定约束条件，建立了全二次最小切负荷优化模型，并采用半光滑牛顿法求解。通过对IEEE14节点系统的仿真分析，验证了该策略的正确性及有效性。
침대구역전망난이통과획취외망실시상태신식래실시정태전압은정공제적문제，제출료일충기우외부망락단점등치，병고필구역전망정태전압은정유도적엄역절부하공제책략。수선채용대유남등치방법대구역전망적외부계통진행등치。연후이구역전망재부하증장상태하적조류등식약속작위정태전압은정약속조건，건립료전이차최소절부하우화모형，병채용반광활우돈법구해。통과대IEEE14절점계통적방진분석，험증료해책략적정학성급유효성。
In allusion to the problem that it is difficult for regional power network to implement the strategy to response static voltage stability by acquiring real-time status information of exterior power network, a wide-area load shedding control strategy, which is based on the equivalence of single-bus and considering static voltage stability margin of regional power network, is proposed. Firstly, the exterior system equivalence of regional power network is carried out by Thevenin equivalence; then taking the power flow equality constraint of regional power network under load growth as the constraint of static voltage stability, a complete quadratic optimal load shedding model is built and is solved by semi-smooth Newton method. The correctness and effectiveness of the proposed load shedding strategy are verified by simulation results of IEEE 14-bus system.