基于广域信息的继电保护实时评价研究

继电保护运行状态监测和状态检修是提高继电保护运行可靠性的重要手段。提出了一种基于广域信息的继电保护实时评价方法,并进行了实时评价系统的研制。实时评价系统通过获取电网调度系统、保信主站和故障录波器主站的信息,对每次继电保护的动作行为进行全局性实时评价、状态评估并生成相应报告,大幅减少了事故分析的时间,增加了事故分析的广度,提高了事故分析的质量。实时评价系统全面分析与故障线路相邻的所有未动作线路的保护信息,从这些设备的录波信息和中间节点信息中分析其动作行为,发现其隐患,保障电网更安全的运行。该系统已在国网安徽省电力公司调度中心试运行,运行结果表明该方案具有良好的可行性,有效提高了运维人员的维护效率。

Research on real-time evaluation of relay protection based on wide area information

The operational status monitoring and condition maintenance of relay protection is important for improving the reliability of relay protection operation. A real-time evaluation method of relay protection based on wide area information is proposed, and a real-time evaluation system is developed. The real-time evaluation system obtains information from the grid dispatching system, the master station of relay protection and the master station of the fault recorder to evaluate the operation of relay protection in real time and generate a corresponding report. The system greatly reduces the time of fault analysis and improves its quality. The system comprehensively analyzes the protection information of all the inactive lines adjacent to the fault line, analyzes their behavior from the recording information and intermediate node information of these devices, determines hidden dangers, and ensures the safe operation of the power grid. The system has been put into operation in the dispatching center of the State Grid Anhui Electric Power Company. The operational results show that the scheme has good feasibility and effectively improves the maintenance efficiency of operation and maintenance personnel. This work is supported by the Science and Technology Project of State Grid Corporation of China (No. 521200190081).