Model Establishment of Power Equipment Safety Assessment Method Under New Power System

With the rapid development of China’s power system and the construction of new power system, the demand for new power equipment is increasing day by day. It is urgent to summarize the early application results and experience, put forward a general power equipment system design theory, and build a bridge between power system designers and power equipment manufacturers, so as to guide the construction of new power system in the next step. By analyzing the strength stress relationship between power system and power equipment under the new power system and the internal driving force of power equipment development, this paper establishes the state evaluation theory of power equipment from the aspects of state evaluation parameters, state evaluation criteria and state evaluation model. Taking the opening and closing coil as an example, the service life of the opening and closing coil is in versed by using the state evaluation theory. This method has guiding significance for the design of system and equipment in new power system.