考虑微电网供电潜力的配电网孤岛划分  

Distribution network island partition considering potential power-supply of microgrid

作　　者：张晓雪[1] 牛焕娜[1] 赵静翔 杨明皓[1] ZHANG Xiaoxue NIU Huanna ZHAO Jingxiang YANG Minghao(College of Information and Electrical Engineering,China Agricultural University,Beijing 100083,China)

机构地区：[1]中国农业大学信息与电气工程学院,北京100083

出　　处：《电力自动化设备》2016年第11期51-58,共8页Electric Power Automation Equipment

基　　金：国家电网公司科技项目~~

摘　　要：针对含微电网的配电网发生故障后恢复供电的孤岛划分问题,提出考虑微电网供电潜力的配电网多目标孤岛划分优化模型。首先提出了考虑微电网内间歇性电源与负荷随机性的基于风险电量的微电网供电潜力评估方法,在此基础上建立了以恢复供电的负荷加权和尽可能大、孤岛数尽可能少、孤岛平均供电综合置信度水平尽可能高为目标函数的配电网孤岛划分优化模型;通过比较单目标方向寻优所得非劣解构成的Pareto解集与理想目标的满意度距离,建立了求解多目标优化问题的优化方法。算例表明所提多目标孤岛划分模型与方法能够得到较为满意的供电恢复方案。A multi-objective optimization model of island partition considering the potential power-supply of microgrid is established for partitioning the islands of distribution network with microgrid during the post-fault power recovery. A method for evaluating the potential power-supply of microgrid is proposed based on the risk energy considering the randomness of intermittent power generations and loads of microgrid,according to which,an optimization model of distribution network island partition is established with the maximum weighted sum of recovery loads,the minimum quantity of islands and the maximum average comprehensive power-supply confidence level of islands as its objectives. An optimization method to solve the multi-objective optimization model is developed,which compares the satisfaction degree distance between the idealized goal and the Pareto sets with non-inferior solutions obtained by single-objective optimization. An example shows that,the proposed multi-objective island partition model and method can provide satisfactory schemes for the power recovery.

关 键 词：微电网 配电网 风险电量 供电潜力 多目标孤岛划分 

分 类 号：TM732[电气工程—电力系统及自动化]