Research on Three-dimensional Comparison and Selection Strategy of Sequential Control transformation

With the improvement of the economic and safety requirements of substations, it is particularly important to implement sequential control transformation of the equipment in the traditional substation to improve the automation level of the substation. However, the transformation of sequential control in substations generally involves a wide range of transformation areas, and the time and method of transformation have a greater impact on the effect of sequential control transformation. It is difficult to make decisions on the transformation plan from all aspects of economy, safety and reliability by traditional economic decision-making models. Therefore, this paper proposes a safety efficiency cost comparison model suitable for sequential control transformation. Based on the characteristics of equipment failure rate, the model updates safety indicators and cost indicators, and proposed the calculation method of the efficiency index by “Monte Carlo Sampling” and “Optimal The Load Reduction Model”, finally evaluating the transformation results from the three aspects of transformation time, site and mode. Finally, this paper uses the IEEE 24 node network as an application scenario to verify the effectiveness of the model