光伏汇集组网系统对电网电压支撑特性研究
A Study on the Voltage Support Characteristics of Photovoltaic Collection and Networking Systems
李红霞 1施健 2张祥成 1屈鲁 2刘飞 1訾振宁2
作者信息
- 1. 国网青海省电力有限公司,青海西宁 810000
- 2. 清华大学,北京 100084
- 折叠
摘要
大规模新能源开发是践行"双碳"目标的必然路径.该文主要针对不同光伏汇集组网系统对电网的电压支撑特性进行研究.在大规模新能源开发背景下对汇集组网系统技术要求的归纳基础上,对比分析了大规模新能源的汇集组网方式,并提出一种集中串联升压组网输出的直流汇集拓扑;对某大规模光伏地区电网和多种汇集组网方式进行了等值建模;对比仿真分析交流、直流汇集组网方案对电网的电压支撑特性的结果,验证了所提串联升压组网输出直流汇集方式在电压支撑性方面优于传统交流汇集组网方式.
Abstract
The large-scaled development of new energy is an inevitable path to implement the double carbon goal.This paper focuses on the voltage support characteristics of different photovoltaic collection and networking systems.On the basis of summarizing the technical requirements for the collection networking system under the background of large-scaled new energy development,the paper compares and analyzes the collection networking modes of large-scale new energy,and proposes a DC collection topology of centralized series boosting networking output.The equivalent modeling of a large-scaled photovoltaic regional power grid and a variety of aggregation networking modes is carried out.By comparing with the simulation and analysis of the voltage support characteristics of the AC and DC collection networking schemes on the power grid,it is verified that the series boost networking output DC collection mode proposed in this paper is superior to the traditional AC collection networking mode in voltage support.
关键词
光伏发电/汇集组网/串联升压/电压支撑/等值建模Key words
photovoltaic power generation/convergence networking/series boosting/voltage support/equivalent modeling引用本文复制引用
基金项目
国家电网总部科技项目(5100-202134560A-0-5-SF)
出版年
2024
NETL
NSTL
万方数据