一种逆变器容配比电量损失分析模型  

Analysis Model of Power Loss of Inverter With High Capacity Ratio

作　　者：秦海军 QIN Haijun(Longyuan(Beijing)Wind Power Engineering Technology Co.,Ltd.,100032,Beijing,China)

机构地区：[1][龙源(北京)风电工程技术有限公司,北京100032]

出　　处：《风力发电》2022年第6期18-23,共6页Wind Power

摘　　要：目前我国新建光伏电站普遍存在容量超配的情况。在一定程度上提高系统容配比,可以提高逆变器、箱变设备利用率,降低工程造价,同时还可以摊薄光伏电站的投资成本。但容配比配置过高,一方面可能导致逆变器弃光限电的发生,另一方面逆变器长期处于高负荷运转下容易导致设备可靠性下降。针对此问题,本文提出了一种因逆变器容配比配置过高导致电量损失评估分析方法。通过该评估分析方法的应用,可精准计算逆变器在较高辐照强度下由于高容配比导致的弃光损失电量。可为光伏电站容配比设计提供数据支持。At present,the capacity of newly built photovoltaic power stations is generally over matched.To a certain extent,increasing system capacity ratio can improve the utilization rate of inverter and box transformer equipment,reduce the project cost,and also can dilute the investment cost of photovoltaic power station.However,if the capacity ratio is too high,on the one hand,the inverter may abandon light and limit power,and on the other hand,the inverter is easy to reduce the reliability of the equipment under high load operation for a long time.To solve this problem,this paper proposes an algorithm to detect the power loss caused by inverter capacity ratio.Through the application of this evaluation and analysis method,the power loss of light abandonment caused by high capacity ratio of the inverter can be accurately calculated under high irradiation intensity.It can provide data support for the capacity ratio design of photovoltaic power stations.

关 键 词：容配比 电量损失 光伏逆变器 

分 类 号：TM4[电气工程—电器]