基于EPON网络的智能变电站继电保护技术分析

Analysis of Relay Protection Technology of Intelligent Substation Based on EPON Network

近年来,我国智能电网快速发展,智能变电站的建设受到广泛重视,成为智能电网发电、输配电、变电和调度等各项工作信息的交互支撑点,其核心技术是现代化的网络通信技术。目前,我国智能变电站中主要采用以太网交换机设计组网结构,成本较高,功能不完善,缺乏扩展性和安全性,而EPON网络在智能变电站继电保护的应用,即通过以太网、无源光网络技术,使业务在无源光纤中实现点对点、点对多点传输,为以太网以上的各种类型业务传输提供支持,其具有信号处理功能完善、传输距离较短、覆盖范围大、成本低等优点,极具推广价值。分析EPON网络技术,提出其在智能变电站继电保护中的应用措施,旨在为增强智能变电站的继电保护网络应用效果提供助力。

In recent years,with the rapid development of smart grid in China,the construction of smart substation has been paid wide attention,and it has become the interactive support point of smart grid power generation,transmission and distribution,transformation and dispatching and other work information.Its core technology is modern network communication technology.At present,our country intelligent substation mainly Ethernet switch design network structure,high cost,function is not perfect,lack of scalability and security,and EPON network in the application of intelligent substation relay protection,namely through the Ethernet,passive optical network technology,make the business in passive fiber point to point,point to multipoint transmission,provide support for Ethernet more than various types of business transmission,its perfect signal processing function,short transmission distance,large coverage,low cost,promotion value.This paper analyzes the EPON network technology and puts forward its application measures in the relay protection of smart substation,aiming to enhance the application effect of the relay protection network of smart substation.