摘要
针对传统配电网分布式光伏承载能力评估方法中未考虑光伏集群的问题,构建了一种以光伏集群为评估单元的承载能力双层评估模型。模型外层通过价格弹性系数描述负荷需求变化,以售电商收益最大为目标优化分时电价,采用粒子群优化(particle swarm optimization, PSO)算法进行求解。内层以不往主网反送电作为指标,考虑电压偏差和设备热稳定约束,提出灵敏度排序方法求取光伏承载能力。在我国某县域实际配电网中求取了配电网光伏集群的承载能力,验证了所提模型和算法的有效性。
Aiming at the problem that photovoltaic clusters are not considered in the traditional evaluation method of carrying capacity of distribution network for distributed photovoltaic power, a two-layer model of carrying capacity with photovoltaic clusters as the evaluation unit is constructed. In the outer layer of the model, PSO algorithm is used to describe the change of load demand through price elasticity coefficient, and the time-of-use price is optimized with the goal of maximizing the income of E-seller. In the inner layer, taking no reverse power transmission to the main network as the index, considering the voltage deviation and equipment thermal stability constraints, a sensitivity ranking method is proposed to calculate the carrying capacity for photovoltaic power. In the actual distribution network of a county in China, the impact of a single photovoltaic cluster on the carrying capacity of the distribution network is calculated, and the carrying capacity of the distribution network for the photovoltaic cluster is calculated to verify the effectiveness of the proposed model and algorithm.
作者
于昊正
赵寒杰
李科
朱星旭
皇甫霄文
樊江川
李翠萍
李军徽
YU Haozheng;ZHAO Hanjie;LI Ke;ZHU Xingxu;HUANGFU Xiaowen;FAN Jiangchuan;LI Cuiping;LI Junhui(State Grid Henan Economic Research Institute,Zhengzhou 450000 China;Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012,Jilin Province,China)
出处
《电力建设》
CSCD
北大核心
2023年第2期122-131,共10页
Electric Power Construction
基金
国网河南经济技术研究院2021年成本项目“高比例分布式电源与中压配电网协同发展措施研究”(SGHAYJOOGHJS2100075)
吉林省自然科学基金联合基金项目资助(YDZJ202101ZYTS152)。
关键词
配电网
分布式光伏
用户侧需求响应
承载力
集群
distribution network
distributed photovoltaic power
demand response
carring capacity
cluster
作者简介
于昊正(1992),男,硕士,工程师,主要研究方向为配电网规划、新型电力系统建设等方面;赵寒杰(1997),男,硕士研究生,主要研究方向为配电网分布式光伏消纳及储能优化调度;李科(1987),男,硕士,高级工程师,主要研究方向为电网规划;朱星旭(1989),男,博士,讲师,主要研究方向为电力系统运行与控制;皇甫霄文(1995),男,硕士,工程师,主要研究方向为配电网规划、分布式电源;樊江川(1986),男,硕士,高级工程师,主要研究方向为电网规划;李翠萍(1982),女,博士,副教授,主要研究方向为新能源发电联网运行关键技术和储能技术应用等;通信作者:李军徽(1976),男,博士,教授,主要研究方向为新能源发电联网运行关键技术和储能技术应用等,E-mail:lijunhui@neepu.edu.cn。
