摘要
含高比例分布式电源接入的交直流混合配电网是未来配电网发展的重要过渡形式,且随着电力系统的发展,对于配电网可靠性的要求越来越高。提出了一种考虑可靠性的交直流混合配电网网架与分布式电源协同优化规划设计方法。在场景构建阶段,该方法考虑了配电网中各分布式电源出力的相关性和时序性以及各负荷功率的时序性。在可靠性评估阶段,针对交直流混合配电网的运行特点,建立了完善的同时考虑稳态和故障运行下可靠性的综合评估体系,通过建立各可靠性指标间的联系,客观地将可靠性指标与经济性指标进行统一量纲处理。在优化阶段,对交直流混合配电网网架结构及分布式电源接入容量设计了双层协同优化策略。同时,建立了完备的线路故障抽样模型。以修改的IEEE 33节点交直流混合配电网的优化规划算例验证了所提方法的优越性和有效性。
The AC/DC hybrid distribution network with a high proportion of distributed generation access is an important transitional form for the development of the future distribution network.With the development of power systems,the requirements for the reliability of the distribution network have increased.This paper proposes a method of collaborative optimization planning and design for an AC/DC hybrid distribution network framework and distributed generation,a method that considers reliability.In scenario construction,the correlation and timing of output of each distributed generation and the timing of each load power are considered.A comprehensive reliability evaluation system considering steady-and fault-operation is established from the operational characteristics of AC-DC hybrid distribution network.This is done by establishing the relationship between the reliability indicators,where the reliability and economic indicators are objectively processed in a unified dimension.A two-layer collaborative optimization strategy is designed for AC-DC hybrid distribution network structure and distributed generation access capacity.At the same time,a complete line fault sampling model is established.The superiority and effectiveness of the proposed method are verified by an example of the optimization planning of a modified IEEE 33-bus AC-DC hybrid distribution network.
作者
金国彬
刘玉龙
李国庆
辛业春
李双
JIN Guobin;LIU Yulong;LI Guoqing;XIN Yechun;LI Shuang(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University),Jilin 132012,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2022年第22期59-70,共12页
Power System Protection and Control
基金
国家重点研发计划项目资助(2018YFB0904703)。
关键词
交直流混合配电网
可靠性
分布式电源
优化规划
AC/DC hybrid distribution network
reliability
distributed generation
optimized planning
作者简介
金国彬(1977—),男,博士,副教授,研究方向为新能源发电及其并网、智能电网技术实现、电能质量治理,E-mail:jgbjgb2005@126.com;通信作者:刘玉龙(1995—),男,硕士研究生,研究方向为交直流混合配电网优化规划。E-mail:2863227890@qq.com。
