计及技术标准的高压配网无功优化规划  

Reactive Power Optimization Planning of High-voltage Distribution Networks With Technical Standards Being Considered

作　　者：任泓宇 王主丁[1,2] 张永斌 孙皓 REN Hongyu;WANG Zhuding;ZHANG Yongbin;SUN Hao(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China;Chongqing Electric Energy Star,Inc.,Jiulongpo District,Chongqing 400039,China;State Grid Zhumadian Power Supply Company,Zhumadian 463000,Henan Province,China;State Grid Wuhan Power Supply Company,Wuhan 430013,Hubei Province,China)

机构地区：[1]输配电装备系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]重庆星能电气有限公司,重庆市九龙坡区400039 [3]国网驻马店供电公司,河南省驻马店市463000 [4]国网武汉供电公司,湖北省武汉市430013

出　　处：《电网技术》2020年第4期1463-1472,共10页Power System Technology

摘　　要：基于无功规划的相关技术标准,给出了高压配电网无功规划优化实用模型:目标为无功补偿净收益最大,约束涉及相关技术标准对无功补偿总容量、单组容量及其组数、电压、功率因数的要求。根据高压配电网的特点,通过供电分区减小优化计算的规模和复杂性,并综合考虑分布式电源、主变分接头、弱环网等因素的影响,提出了一种基于高压配电网供电分区的3阶段启发式优化方法:首先分别针对各相对独立的高压供电分区,以净收益由大到小的顺序逐次确定单节点无功补偿的初始单组容量及其组数;然后,考虑到相同供电分区内不同位置无功补偿的相互影响,对初始无功补偿方案采用迭代计算进行修正;最后在全局范围内,对修正方案采用交流潮流进行校验并作进一步的优化微调。经对实际系统的计算分析,表明所提方法计算快速稳定,适用于大规模高压配电系统的无功规划优化。Based on relevant technical standards of reactive power planning, a practical reactive power planning optimization model is presented in this paper for HV distribution networks. The objective is to maximize the net benefit of reactive power compensation, and the constraints involve some relevant technical standards’ requirement of total reactive compensation capacities, discrete capacitor banks and their numbers, voltage quality and power factors. According to the characteristics of HV distribution network, a heuristic three-stage optimization method for reactive power planning in HV distribution networks is proposed to reduce the scale and complexity of optimization calculation, using power supply division and considering the influence of distributed generators, main transformer tap changers and weak loop networks. Firstly, for each relatively independent HV power supply area, the initial compensation bank number and capacity of a single node are determined successively in the order of net income from large to small. Then, considering the mutual influence of compensation capacities at different positions in the same power supply area, the initial planning scheme is iteratively revised. Finally, in global scope, the planning scheme is checked with AC power flow, further optimized and fine-tuned. Calculation and analysis of actual systems show that the proposed method is practical, fast and stable, especially suitable for reactive power planning optimization of large-scale HV distribution systems.

关 键 词：高压配电网 供电分区 技术标准 无功规划 3阶段优化方法 大规模系统 

分 类 号：TM721[电气工程—电力系统及自动化]