光伏汇集组网系统对电网电压支撑特性研究
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引用本文:李红霞1,施健2,张祥成1,屈鲁2,刘飞1,訾振宁2.光伏汇集组网系统对电网电压支撑特性研究[J].电网与清洁能源,2024,40(4):127~133
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作者单位
李红霞1 1. 国网青海省电力有限公司 
施健2 2.清华大学 
张祥成1 1. 国网青海省电力有限公司 
屈鲁2 2.清华大学 
刘飞1 1. 国网青海省电力有限公司 
訾振宁2 2.清华大学 
基金项目:国家电网有限公司总部科技项目(5100-202134560A-0-5-SF)
中文摘要: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。
中文关键词:光伏发电  汇集组网  串联升压  电压支撑  等值建模
 
A Study on the Voltage Support Characteristics of Photovoltaic Collection and Networking Systems
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.
keywords:photovoltaic power generation  convergence networking  series boosting  voltage support  equivalent modeling
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