摘要
随着大规模光伏接入,配电网运行受光伏出力随机性的影响日益增加。基于考虑地域和气候特征的光伏出力模型,构建了以最小网络损耗为目标,考虑潮流约束、安全运行约束、电源出力约束的配电网优化运行模型,并采用改进的中国电力科学研究院62节点算例对地域、气候及配电网优化运行之间的关系进行了分析。测试结果表明,经纬度和天气条件共同影响一天内光伏出力的时长和峰值,进而影响配电网的网络损耗和电压偏移。
With large-scale photovoltaic generation integrated to distribution network,the operation of distribution network is increasingly affected by the randomness of photovoltaic output power.Based on the photovoltaic output power model considering regional and climate characteristics,an optimization operation model of distribution network is constructed with the goal of minimum network loss,and constraints of power flow,security and output power are also considered in this model.The relationship among region,climate and optimal operation of distribution network are analyzed based on the improved 62-node system of the Institute of Electricity Science and Technology of China.The test results show that latitude,longitude and weather conditions jointly affect the duration and peak value of photovoltaic output power within a day,which further affect the network loss and voltage offset of distribution network.
作者
宋建平
王颖
许寅
SONG Jianping;WANG Ying;XU Yin(Beijing Jiaotong University,Beijing 100044,China)
出处
《供用电》
2022年第5期25-32,共8页
Distribution & Utilization
基金
国家电网有限公司科技项目(SGXJ0000TKJS1900112)。
关键词
光伏出力
网络损耗
优化运行模型
配电网
分布式电源
photovoltaic output power
network loss
optimization operation model
distribution network
distributed generation
作者简介
宋建平(1997-),男,硕士研究生,研究方向为光伏建模、配电网优化;王颖(1992-),女,博士,讲师,研究方向为韧性电网、城市电力-交通融合;许寅(1986-),男,博士,教授,研究方向为韧性电网、电力系统暂态建模与高性能仿真。
