基于节点可靠性重要度评估的配网侧储能鲁棒规划方法  

A Robust Planning Method for Distribution-Level Energy Storage Based on Nodal Reliability Importance Assessment

作　　者：刘志宏 邵振通 丛鹏 李西 许志伟 曹晓宇[2] 翟桥柱[2] LIU Zhihong;SHAO Zhentong;CONG Peng;LI Xi;XU Zhiwei;CAO Xiaoyu;ZHAI Qiaozhu(State Grid Tibet Electric Power Co.,Ltd.,Lhasa 850000,Tibet,China;Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China)

机构地区：[1]国网西藏电力有限公司经济技术研究院,西藏拉萨850000 [2]西安交通大学,陕西西安710049

出　　处：《电网与清洁能源》2023年第2期33-39,45,共8页Power System and Clean Energy

基　　金：国网西藏电力有限公司科技项目(SGXZJY00-JHJS2000048);国家自然科学基金项目(61773309;62103321)。

摘　　要：面向可靠性提升,提出基于节点可靠性重要度评估的配网储能规划方法。综合源-荷关系、节点负荷及供能关键性等要素,提出基于供电可靠性的节点重要度快速评估算法,形成储能接入候选节点集,构建基于2阶段鲁棒优化的储能规划模型。考虑配电网故障不确定性,采用“N-k”不确定集来表征断线故障场景,并在最差故障场景与重要节点集约束作用下实现系统整体失负荷电量的最小化;针对不同故障假设,提出2类3层优化求解策略,支撑鲁棒储能规划模型的高效求解。西藏某地区实际配电网的算例结果表明,所提方法能够准确辨识对供电可靠性提升起到关键作用的节点,并给出具有强风险承受力的储能配置方案。相较2种对比方法,所提储能规划方法的可靠性收益更高。To improve the system reliability, a robust method for planning energy storage stations is proposed. A rapid evaluation algorithm for nodal reliability importance is proposed to form candidate nodes for the planning. A two-stage robust planning model for energy storage plants is constructed. The N-k uncertainty set is used to model line-outage scenarios. Through the capacity planning, the system is scheduled with the minimization of the power loss under the worst line-outage scenario. With different assumptions,the planning model is solved efficiently by a three-levels method. The method is tested by an example of an actual network in Tibet. The results show that the proposed method can identify the key nodes accurately and the energy storage plan plays a crucial role in the improvement of system reliability. Compared with existing methods,the proposed method achieves higher reliability benefits.

关 键 词：配电网 储能规划 供电可靠性 节点重要度 鲁棒优化 

分 类 号：TM911[电气工程—电力电子与电力传动]