中国电力 ›› 2020, Vol. 53 ›› Issue (4): 32-40.DOI: 10.11930/j.issn.1004-9649.201911044

• 智能配电网的规划理论与实践专栏 • 上一篇    下一篇

兼顾网损优化效益与投资成本的SNOP容量规划方法

何英静1, 沈舒仪1, 何东2, 张靖瑞3, 李帆1, 朱克平1, 王松岩3   

  1. 1. 国网浙江省电力有限公司经济技术研究院,浙江 杭州 310008;
    2. 国网浙江省电力有限公司信息通信分公司,浙江 杭州 310013;
    3. 哈尔滨工业大学 电气工程系,黑龙江 哈尔滨 150001
  • 收稿日期:2019-11-11 修回日期:2020-02-13 发布日期:2020-04-05
  • 作者简介:何英静(1975-),女,硕士,高级工程师,从事电网规划研究,E-mail:heyingjingzpepc@163.com;沈舒仪(1989-),女,硕士,工程师,从事电网规划研究,E-mail:383462339@qq.com;何东(1988-),男,硕士,工程师,从事电力大数据分析研究,E-mail:412237673@qq.com
  • 基金资助:
    国家自然科学基金资助项目(51377035);国网浙江省电力有限公司科技项目(支持城市生态能源系统的配电网规划决策支持技术研究)

A SNOP Capacity Planning Method Considering Network-loss Optimization Benefit and Investment Cost

HE Yingjing1, SHEN Shuyi1, HE Dong2, ZHANG Jingrui3, LI Fan1, ZHU Keping1, WANG Songyan3   

  1. 1. State Grid Zhejiang Economic Research Institute, Hangzhou 310008, China;
    2. State Grid Zhejiang Information and Telecommunication Company, Hangzhou 310013, China;
    3. Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2019-11-11 Revised:2020-02-13 Published:2020-04-05
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No.51377035), Science and Technology Project of State Grid Zhejiang Electric Power Company (Supporting Technique of the Distribution Network Planning and Decision Making Considering Urban Ecological Energy System)

摘要: 智能软开关(soft normally open point, SNOP)在配电网潮流控制方面具有强大能力,但是SNOP极高的投资成本限制了其在配电网的应用。提出一种综合考虑SNOP网损收益及投资成本的最优规划方法。首先,基于SNOP寿命周期,按时间序列合理构建电网运行场景,根据SNOP及系统运行状态约束,分析不同容量条件下SNOP的降损收益;其次,根据模块化多电平换流器拓扑结构对SNOP成本进行详细分析,对SNOP容量与成本关系进行线性拟合;最后,充分考虑日常运营中降网损收益与SNOP投资运行成本,给出SNOP最优安装位置与容量配置的规划方案。仿真算例表明,受SNOP高投资运行成本限制,在大多数仿真条件下配电网仅安装一个SNOP为可行规划方案,可为主动配电网规划提供参考。

关键词: 主动配电网, 电力系统规划, 智能软开关, 网损收益

Abstract: Soft normally open point (SNOP) has strong ability in distribution network power flow control, but its application in distribution network is limited due to its quite high investment costs. An optimal planning method is thus proposed with consideration of the network-loss reduction benefit and SNOP investment cost. Firstly, the operation scenarios of the distribution network are generated according to time-series based on the life cycle of SNOP. Based on the restrains of SNOP and system operation states, the network-loss reduction benefits of SNOP are quantitatively analyzed under different SNOP capacities. And then, the SNOP cost is analyzed according to the topologic structure of modular multilevel converter, and the relationship between SNOP capacity and cost is linearly fitted. At last, a planning scheme is proposed for optimal SNOP installation location and capacity allocation considering the balance between network-loss reduction benefit and SNOP investment cost in daily operations. Case study shows that, limited by the high investment and operation costs of SNOP, it is feasible to install one SNOP in a distribution network under most conditions.

Key words: active distribution network, power system planning, soft normally open point, network loss