频率安全分段控制下轮次切负荷协调优化策略  

Coordinated optimization strategy of wheel load shedding under frequency safety subsection control

作　　者：秦川[1] 任伟 江叶峰 熊浩 徐贤 鞠平[1] QIN Chuan;REN Wei;JIANG Yefeng;XIONG Hao;XU Xian;JU Ping(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]河海大学能源与电气学院,江苏南京211100 [2]国网江苏省电力有限公司,江苏南京210000

出　　处：《电力自动化设备》2022年第7期261-268,共8页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51837004,U2066601);“111”计划(B14022)。

摘　　要：区外来电和大规模新能源发电比例的迅速提升使得电力系统频率安全问题日益严峻,精准负荷控制为源荷的瞬时平衡提供了新途径。提出了频率安全分段控制下,毫秒级负荷控制(FC-Ⅰ段)和秒级/分钟级负荷控制(FC-Ⅱ段)的用户侧轮次切负荷协调优化策略。根据FC-Ⅰ段控制策略确定的节点负荷控制量,以控制代价最小为目标,以负荷重要程度、负荷控制精确度为约束,基于McCormick松弛和内点法,快速求解该节点下底层用户的毫秒级负荷切除策略;对于FC-Ⅱ段的秒级/分钟级负荷控制,综合考虑FC-Ⅰ段控制后的剩余可控量与用户的参与意愿,建立多用户非合作博弈模型,并采用多目标粒子群优化算法求解秒级/分钟级负荷切除方案。通过实例分析,验证了所提策略的有效性。The rapid increase in the proportion of external electricity and large-scale new energy power generation in the area makes the problem of power system frequency security increasingly serious.Accurate load control provides a new way for the instantaneous balance of source load.The user side wheel load shedding coordinated optimization strategies of millisecond load control(FC-Ⅰ section) and second/minute load control(FC-Ⅱ section) under frequency safety subsection control are proposed.According to the node load control quantity determined by FC-Ⅰ section control strategy,the millisecond load removal strategy of the underlying users under the node is quickly solved based on McCormick relaxation and interior point method,with the goal of minimizing the control cost and the constraints of load importance and load control accuracy.For the second/minute load control of FC-Ⅱ section,considering the remaining controllable quantity after FC-Ⅰ section and the user’s willingness to participate,a multi-user non cooperative game model is established,and the multi-objective particle swarm optimization algorithm is used to solve the second/minute load removal scheme.The effectiveness of the proposed strategy is verified by example analysis.

关 键 词：频率安全分段控制 切负荷策略 McCormick松弛 非合作博弈 多目标粒子群优化算法 

分 类 号：TM71[电气工程—电力系统及自动化]