基于负荷-光伏等效负荷曲线动态分段的配电线路联络开关优化配置  

Tie switch allocation optimization based on dynamic segment of equivalent load-PV curve

作　　者：陈禹[1] 唐巍[1] 陈昕玥 丛鹏伟[1] 张璐[1] 

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》2015年第3期47-53,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51377162);国家电网公司科技项目(PD71-13-031)~~

摘　　要：传统的开关配置方法不能完全适用于光伏电源并网的情况,因此基于负荷-光伏等效负荷曲线动态分段对含光伏电源的配电线路的联络开关进行优化配置。将负荷曲线和光伏出力曲线进行叠加获得各季节等效负荷曲线。考虑负荷短时激增和曲线首尾负荷相差不大的情况,以日负荷-光伏等效负荷曲线上各单调区间的积分中值作为分段点对曲线进行分段,并根据实际开关动作次数对分段进行动态修正。以损耗电量减少量和停电损失费用减少量为目标函数,以节点电压、功率平衡、可靠性、网络拓扑、开关操作次数限制和开关设备的投资为约束条件建立了联络开关优化配置数学模型,将生成树和蚁群算法相结合对模型进行求解。对IEEE 33节点系统进行算例分析,分析结果证明所提方法是可行、有效的。Since the traditional switch allocation method could not adapt to power grid with PV （PhotoVohaic） source,it is proposed to optimize the tie switch allocation of distribution line with PV source based on the equivalent load-PV curves,which are the superposition of load curve and PV power output curve for different seasons. As the load may increase sharply within a short period and the loads of two curve ends are normally similar,the daily equivalent load-PV curve is divided into several segments with the integral mid-value of each monotone interval as the segment point. The segments are dynamically corrected according to the actual operation times of switches. With the power loss reduction and the outage loss reduction as the objective functions and the node voltage,power balance,reliability,network topology, switching limitation and switch investment as the constraints,a tie switch allocation optimization model is built and solved by the combination of the spanning tree and ant colony algorithm. Case analysis is carried out for IEEE 33-bus system and results show the feasibility and effectiveness of the proposed method.

关 键 词：联络开关 光伏电源 负荷-光伏等效负荷曲线 动态分段 蚁群算法 优化 

分 类 号：TM76[电气工程—电力系统及自动化]