配电网变电站经济供电半径研究  

Economic power supply radius of a substation in a distribution network

作　　者：程军照 李芳方 莫海峰 徐敏 袁智勇 CHENG Junzhao;LI Fangfang;MO Haifeng;XU Min;YUAN Zhiyong(Power Grid Planning and Construction Research Center,Yunnan Power Grid Co.,Ltd.,Kunming 650011,China;Electric Power Research Institute,CSG,Guangzhou 510080,China)

机构地区：[1]云南电网有限责任公司电网规划建设研究中心,云南昆明650011 [2]南方电网科学研究院,广东广州510080

出　　处：《电力系统保护与控制》2022年第15期129-137,共9页Power System Protection and Control

基　　金：南方电网公司重点科技项目“基于数据深度分析的配电网精准规划投资决策技术研究”(059100KK52190009)。

摘　　要：为减少规划投资并提高供电质量,针对变电站经济供电半径进行了研究。首先,构建了考虑变电站建设投资和运维费用并以单位供电面积年费用最小为目标函数的变电站供电半径优化模型,研究了变电站经济供电半径求解算法。其次,建立了不同负荷情形下的变电站供电半径和线路电压损失之间的定量关系,在此基础上根据配电网对电压损失的规定对优化计算得到的经济供电半径进行电压质量校验。通过对实际电网数据的测算,验证了算法的准确性和合理性。计算结果可为地区配电网规划提供有效的参考。To lower cost and improve power supply quality,the economic power supply radius of a substation is investigated.First,taking the construction cost as well as operation and maintenance cost into consideration,an economic power supply optimization model of the substation to minimize the annual supply cost of per unit area is established and a solution method is provided.Then,the quantitative relationship between power supply radius and voltage loss of lines under different load scenarios is also established,through which the voltage quality of optimized economical power supply radius is examined according to voltage loss regulation in the distribution network.The correctness and effectiveness of the proposed method are verified using actual distribution network data.The result provided can be used as a reference in regional distribution network planning.

关 键 词：配电网 变电站 规划 经济供电半径 线路电压损失 

分 类 号：TM63[电气工程—电力系统及自动化]