山东泰开自动化有限公司

Smart substations are generally equipped with mechanical characteristics monitoring devices for HV circuit breakers, which collect the key mechanical characteristic parameters of circuit breakers. The key mechanical characteristic parameters of circuit breaker energy storage motor and opening and closing operation are selected for fuzzy comprehensive calculation to evaluate the comprehensive working conditions of the mechanical characteristics of HV circuit breakers. This method takes the error quantity of mechanical characteristic parameters deviating from the normal value as the evaluation factor, determines the membership function according to expert experience, and analyzes and comprehensively evaluates the mechanical characteristics of HV circuit breakers according to the calculation results. In this paper, the on-line monitoring data of the mechanical characteristics of circuit breakers under normal and abnormal conditions are evaluated by fuzzy comprehensive evaluation. The results show that this method can correctly reflect the mechanical characteristics of HV circuit breakers and provides a feasible method for the on-line evaluation of the mechanical characteristics of circuit breakers in smart substations.

Aiming at the problem existing in the data signal acquisition of the traditional integrated power system, the integrated converter board based on the integrated power signal acquisition technology is developed by analyzing the reliability, integration and accuracy. The application results show that the acquisition method is effective to solve the problem of the high error rate of signal acquisition because of the large number of leads and contacts in the panel. The efficient and reliable centralized processing method of data and alarm information is made, which provide some reference for the integrated power signal acquisition and transfer design of the substations.