Research on Overvoltage Monitoring Technology for Distributed New Energy Intelligent Stations

作     者：Huang, Zhidu Zhang, Longfei Huang, Wei Li, Shan Chen, Yajuan 

作者机构：Power Grid Electric Power Research Institute of Guangxi Nanning530023 China Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Electric Power Research Institute of Guangxi Power Grid Co. Ltd Nanning530023 China Nanning Power Supply Bureau of Guangxi Power Grid Co. Ltd Nanning530023 China 

出 版 物：《Distributed Generation and Alternative Energy Journal》 (Distrib. Gener. Altern. Energy J.)

年 卷 期：2024年第39卷第6期

页      面：1209-1228页

核心收录：

基　　金：This project is part of the Guangxi Talent and Base Project titled \u201CResearch and Development of Overvoltage Protection Devices for Intelligent Distribution Areas\u201D (Project No. GUI KE AD22080006) and the Southern Power Grid Company\u2019s technology project \u201CResearch and Demonstration Application of New Overvoltage Protection Technology for Highly Reliable Distribution Areas\u201D (Project No. GXKJXM20230171). The implementing unit is the Electric Power Research Institute of Guangxi Power Grid Co.  Ltd 

主　　题：Risk assessment 

摘      要：Distributed renewable energy sources such as wind, solar, and small hydropower of the new distribution network are mainly connected to the grid through distribution lines, which are susceptible to lightning overvoltage. Therefore, this paper conducts a lightning risk assessment of the active distribution network system, including the photovoltaic (PV) side and the line-side. The study analyzes the effectiveness of two lightning protection measures: strengthening insulation and installing lightning arresters in the new distribution network. Strengthening insulation involves enhancing the first three towers and all line towers. However, the results show that both methods cannot effectively reduce the lightning failure rate on the PV-side and may even lead to adverse effects. Additionally, the analysis of in stalling lightning arresters reveals that installing them on the first-level towers of the distribution line can significantly reduce the impact of lightning on both the line and PV-sides. In particular, installing lightning arresters simultaneously on the first three towers closest to the PV-side can drastically reduce the overall lightning trip rate on the line-side. © 2025 River Publishers.