Research on the analysis method of the relationship between alarm signal action and sequential logic in smart substation

摘要

With the large-scale deployment of IED, the number of alarm signal increase dramatically, causing some problems such as invalid alarm and secondary alarm frequency, malfunctions of protective relays and circuit breakers and so on. Due to the lack of effective preprocessing of monitoring data, it is difficult for the operator to make the right judgment in a short time. To solve the above problems, this paper put forward an analysis method of the relationship between alarm signal action and sequential logic in smart substation. On the basis of IEC61850 standardized modeling and the filtering and classification of monitoring information, the configuration file and network topology analysis of substation system are analyzed, obtaining the relationship between the power element and the protection and circuit breaker, and a backtracking method based on time constraint and action logic is constructed by introducing the timing constraint of alarm information into the event chain. Finally, proved by an example, the method is correct and feasible.