Abstract: A safety evaluation method was introduced based on the volleyball super league algorithm for substation measurement and control（M＆C）and phasor measurement unit（PMU）devices. Firstly, the substation M＆C and PMU devices were mapped as nodes and the connection relationships were mapped as edges; the security evaluation elements and local security metrics of each node were calculated, and the global security metrics were obtained by integrating all of the local security metrics and their edges using the volleyball super league algorithm. Secondly,the regional security evaluation elements were calculated, and the regional elements and global security metrics were integrated and fused using the volleyball super league algorithm to obtain the comprehensive security metrics of the region. Finally, the overall comprehensive complex network security assessment elements were calculated, and the volleyball super league algorithm was used to integrate them with the regional comprehensive security metric to obtain the final total network security evaluation metric. The technique is simple and efficient with feasiblity and generaity,which provide a strong reference for research on identifying and evaluating threats, and provide useful ideas for securing the safe and stable operation of the power grid.