高密度光伏接入配电网的控制保护系统设计  

Design of control and protection system for high-density photovoltaic power distribution network

作　　者：李正红[1] 徐光福[2] 余群兵[2] 魏承志[1] LI Zheng-hong;XU Guang-fu;YU Qun-bing;WEI Cheng-zhi(China Southern Power Grid Dispatching Control Center,Guangzhou 510080,China;Nanjing NARIRELAYS Electric Co.Ltd.,Nanjing 211102,China)

机构地区：[1]中国南方电网电力调度控制中心,广东广州510080 [2]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《电子设计工程》2019年第10期10-14,共5页Electronic Design Engineering

基　　金：国家自然科学基金(51377021)

摘　　要：传统的控制系统在控制时保护效果很差,对电流的控制精准度把握不足,控制高密度光伏电时十分困难,难以满足目前电力机构的要求。为了解决上述问题,设计了一种新的高密度光伏电接入配电网控制保护系统,分别对系统的硬件和软件进行设计。硬件部分主要设计了系统的变频器、控制器和保护线路;软件工作由电网信号采集、电网信号处理、电网信号控制和电网信号保护四步组成。与传统控制保护系统进行对比实验,结果表明,所设计的系统能够精准地控制接入配电网的高密度光伏,确保配电工作的安全性,提高工作效率。The traditional control system has poor protection effect and poor accuracy in current control. It is very difficult to control high-density photovoltaic power,and it has been difficult to meet the current requirements of power institutions. In order to solve the above problems,a new control and protection system for high- density photovoltaic access distribution network is designed,and the hardware and software of the system are designed respectively. The hardware part mainly designs the frequency converter,controller and protection circuit of the system,and the software work consists of four steps: power network signal acquisition,power network signal processing,power network signal control and power network signal protection. Compared with the traditional control and protection system,the results show that the designed system can accurately control the high- density photovoltaic connected to the distribution network,ensure the security of distribution work and improve the efficiency.

关 键 词：高密度 光伏电网 配电网 控制系统 保护系统 

分 类 号：TN301[电子电信—物理电子学]