分布式光伏电站设计中的电气设计技术分析

Analysis of Electrical Design Technology in Distributed Photovoltaic Power Station Design

文章分析了分布式光伏电站相较于传统电站的优势,以及其对电力系统电能资源补充供给的积极作用。同时研究了分布式光伏电站电气设计相关技术,包括电缆设备选型、电缆线路分布设计、逆变器选型、逆变器效率提升与多级拓扑结构设计、变压器选型与调控设计、支架设计、绝缘协调设计以及并网保护设计等。重点论述上述电气设计技术的工作原理、应用要点,及如何有效提高分布式光伏电站电气设计的可靠性、实用性与耐久性,同时有效降低发电成本、提高电网接入并网功率、保障光伏电站安全运行。

This paper analyzes the advantages of distributed photovoltaic power station compared with traditional power station and its positive effect on the supplementary supply of power resources in the power system.At the same time,it studies the electrical design related technologies of distributed photovoltaic power station,including cable equipment selection,cable circuit distribution design,inverter selection,inverter efficiency improvement and multi-level topology design,transformer selection and control design,support design,insulation coordination design and grid-connected protection design,etc.It focuses on the working principle and application points of the above electrical design technology,as well as how to effectively improve the reliability,practicality and durability of the electrical design of distributed photovoltaic power stations,while effectively reducing power generation costs,improving grid access power,and ensuring the safe operation of photovoltaic power stations.