• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2019, Vol. 40 ›› Issue (10): 75-83.doi: 10.3969/j.issn.1000-7229.2019.10.009

• 智能电网 • 上一篇    下一篇

交直流混合配电网分布式电源最大准入容量

黄河1,高松1,韩俊2,孙琦润3,吴志3,顾伟3   

  1. 1. 国网江苏省电力有限公司,南京市210024;2. 国网江苏省电力有限公司经济技术研究院,南京市210008;3.东南大学电气工程学院,南京市210096
  • 出版日期:2019-10-01
  • 作者简介:黄河 (1978),男,硕士,高级工程师,主要研究方向为配电网规划及运行控制; 高松(1983),男,硕士,高级工程师,主要研究方向为配电网规划及运行控制; 韩俊(1985),男,博士,高级工程师,主要研究方向为配电网规划及相关理论应用; 孙琦润(1996),男,硕士研究生,主要研究方向为配电网规划及运行控制; 吴志(1987),男,博士,副教授,主要研究方向为配电网优化规划; 顾伟(1981),男,博士,教授,博士生导师,主要研究方向为电力系统运行控制、可再生能源接入技术。
  • 基金资助:
    国家自然科学基金项目(51707033); 国网江苏省电力有限公司科技项目“面向高渗透率可再生能源和电动汽车接入的高灵活性交直流配电网规划技术研究”(J2018003)

Maximum Capacity of Grid-Connected Distributed Generation in AC/DC Hybrid Distribution Network

HUANG He1,GAO Song1,HAN Jun2,SUN Qirun3,WU Zhi3,GU Wei3   

  1. 1. State Grid Jiangsu Electric Power Company, Nanjing 210024, China;2.Economic and Technical Research Institute, State Grid Jiangsu Electric Power Company, Nanjing 210008, China;3. College of Electrical Engineering, Southeast University, Nanjing 210096, China
  • Online:2019-10-01
  • Supported by:
    This work is supported by National Natural Science Foundation of China(No. 51707033).

摘要: 配电网中分布式电源(distributed generation, DG)的接入比例不断提升,对其正常运行带来一定的影响,有必要对分布式电源的最大准入容量进行评估。交直流混合配电网网络运行方式比传统交流配电网更加灵活,对分布式电源的消纳能力更强,是未来配电网的发展趋势,首先构建了基于 Distflow 潮流约束的交直流混合配电网分布式电源最大准入容量评估模型,然后采用二阶锥松弛技术对模型中非凸、非线性的约束条件进行处理,将其转化为可解的混合整数二阶锥规划模型进行求解。最后在94节点配电系统算例中测试了模型的有效性,分析了交流配电网、交直流混合配电网的分布式电源最大准入容量以及相应的影响因素,结果表明交直流混合配电网相比传统交流配电网对分布式电源的最大准入容量有所提升。

关键词: 交直流混合配电网, 混合整数二阶锥规划, 分布式电源(DG), 最大准入容量

Abstract:  The proportion of distributed generation(DG) in the distribution network is continuously increasing, which has a certain impact on the normal operation of distribution network. It is necessary to evaluate the maximum access capacity of the distributed generation. The operation mode of AC/DC hybrid distribution network is more flexible than the traditional AC distribution network. The AC/DC hybrid distribution network has a larger acceptability of the distributed generation and it is the development trend of the distribution network in the future. This paper constructs the maximum capacity evaluation model of distributed generation for AC/DC hybrid distribution network on the basis of Distflow power flow constraint, and then the second-order cone relaxation technique is used to deal with the non-convex and nonlinear constraints in the model. The model is transformed into a solvable mixed integer second-order cone programming model to be solved. Finally, the effectiveness of the model is tested in a 94-node distribution system. The maximum access capacity of the distributed generation and the corresponding influencing factors of the AC distribution network and the AC/DC hybrid distribution network are also analyzed. The results show that the maximum access capacity of the distributed generation in AC/DC hybrid distribution network is larger than that of the traditional AC distribution network.

Key words: AC/DC hybrid distribution network, mixed integer second-order cone programming, distributed generation(DG), maximum access capacity

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