针对变电站屋面光伏与站用变系统耦合的方法

A Method for Coupling Substation Roof Photovoltaic and Substation Transformer System

随着变电站建筑设施节能降损、能效提升的推广,分布式变电站屋顶光伏逐步接入了一体化电源系统。为了保障站用电有效使用和站内一体化电源安全,采用了功率控制装置(EPM),以灵活实时控制逆变器转换功率,确保屋顶光伏发电不倒送所用变。为了确保安全性,定制动态试验,通过模拟站用电交流系统负载,实现EPM根据负载功率进行输出功率控制。利用动态试验对站用变负载进行模拟试验,结果表明该控制系统有效保障了站用电使用和站内一体化电源安全。

With the promotion of energy saving and loss reduction and energy efficiency improvement of substation building facilities,distributed substation rooftop photovoltaics are gradually connected to the integrated power supply system.In order to ensure the effective use of power consumption in the station and the safety of the integrated power supply in the station,a EPM is adopted to flexibly control the inverter conversion power in real time to ensure that the rooftop photovoltaic power generation does not reverse the use of the change.To ensure safety,dynamic tests are customized.By simulating the load of the AC system of the station,EPM realizes output power control according to the load power.The dynamic test is used to simulate the variable load of the station,and the results show that the control system can effectively ensure the safety of the power use of the station and the integrated power supply in the station.