On-line management method of protection setting integrity following IEC61850

Abstract

With the development of intelligent substation, substations rely more on network communication to transmit substation information. High substation automations with reliable communication avoid the traditional complicated operation which needs to be done manually, and improve the efficiency of substation operation. But higher requirements for the reliability of information integrity are put forward. The protection setting of intelligent substation directly affects the correctness of the protection devices (Intelligent Electronic Device) and further affects the normal operation of the entire power system. Because the protection setting of protective devices is affected by power system operation mode, season climate and many other factors, the protection setting often needs to be adjusted. When the number of protection devices in substation is increasing rapidly, the frequent change of the protection setting can easily cause the missing or omission of protection setting for certain protection devices, resulting in the potential danger of the power system. On view of the above problems, combined with the development trend of IEC61850, this paper focuses on the on-line management of protection devices. By studying the data attribute of the online management of protection device settings and combining the layered network structure of the intelligent substation, the online management system for protection device settings is constructed, with the aim to eliminate the hidden danger caused by the missing or omission of protection setting.