智能变电站过程层网络监测与故障定位系统设计与实现

针对现有的网络监测系统大都无法支持过程层网络拓扑结构和虚连接回路显示的问题,文中提出一种基于过程层交换机的网络监测在线系统。该系统包含主机监测系统和过程层交换机。主机监测系统通过解析变电站配置文件(SCD)获取预置的过程层网络拓扑结构和虚连接逻辑回路;过程层交换机的利用访问控制列表(ACL)规则捕获和解析一定的面向通用对象的变电站事件(GOOSE)报文和取样值(SV)报文,获取连接在交换机的设备信息,从而使主机监测系统获得实际的过程层网络拓扑结构和虚连接物理回路。对比预置和实际的网络拓扑结构和虚连接回路,实现了对过程层网络的实时监测和故障定位。在实际应用中,该系统协助运维人员实时地监测网络运行状态和快速地定位故障,提高了电力系统自动化运维的管理水平。

Design and implementation of network monitoring and fault location system for process layer network in smart substation

In order to solve the problem that most of the existing network monitoring system can not support the display of process layer network topology and virtual connection circuit, this paper proposes a network monitoring online system based on the process layer switch. The system includes the host monitoring system and the process layer switch. The host monitoring system obtains the preset process level network topology and virtual connection logic circuit by parsing the SCD file. The process layer switch uses the ACL rule to capture and parse certain GOOSE and SV packets to obtain the device information connected to the switch. Then the host monitoring system obtains the actual process level network topology and the virtual connection physical circuit.Real-time monitoring and fault location of the process layer network are realized by comparing preset and catual network topology and virtual link loop. In practical applications, the system assists power system operation and maintenance personnel in real-time monitoring of network operation status and fault location, and improves the management level of power system automation operation and maintenance.