基于WinPcap的智能变电站继电保护测试关键技术研究

The Key Technologies of Relay Testing in the Intelligent Substation Based on WinPcap

基于IEC61850标准进行智能变电站继电保护测试系统关键技术研究,对IEC61850标准进行深入解读,并使用WinPcap工具实现了过程层与间隔层之间的通信功能。同时,还实现了保护动作行为模拟,为变电站工作人员保护测试工作提供了一种新颖而直观的方式,并提供综合分析功能:故障波形特征量计算(序量计算,功率方向分析,阻抗分析)和谐波分析。经PSCAD/EMTDC仿真算例测试,系统计算精准、功能齐全,对IEC61850标准的理解正确,为继电保护测试工作提供了一个便捷的平台,具有广阔的应用前景。

We investigate the key technologies of relay testing in the intelligent substation,and analyse the core idea of IEC61850 in detail.We realize the communication between the process level and the bay level by using WinPcap.We also simulate the action of relay,which provides a new and intuitive way for the test of relay protection operators in the substation. we also provide comprehensive analysis functions：fault wave characteristics （sequence component,power,impedance） calculating and harmonics analysis.The PSCAD/EMTDC simulation shows that the system has accurate computations,complete functions and correct understanding of IEC61850.This system can provide a convenient platform for the test of protective relays and has a wide application prospect.