Study on Evaluation Method of De-ringing Scheme of Channel-type Core Main Network
With the construction of several 10 million energy bases on both sides of the central-eastern core loop net-work of a provincial power network in northwest China,the core loop network with aggregated loads gradually evolves into a power mutual aid channel of over 10 million kilowatts and becomes a complex electromagnetic loop network cou-pled with transmission channels and core loop network.The complex network assumes the role of reliable power supply and power transmission,and has more safety hazards and open-loop constraints than the ordinary loop network.To eval-uate the open-loop programs,six open-loop evaluation indexes were proposed for main network safety and stability,power supply reliability,and operation economy:short-circuit current safety,N-1 thermal stability margin,load power supply risk,channel transmission capacity,system loss,and upper and lower network power balance.Considering the advantages and disadvantages of the subjective and objective assignment methods and the actual demand of the loop net-work open-loop scenario,the objective CRITIC method was used to improve the subjective G1 method,and the model was established to find the optimal comprehensive weights with the objective of minimizing the difference between the subjective and objective weights.Finally,the planned system of the central-eastern core loop network in 2023 was used as an example to verify the effectiveness of the proposed open-loop index and evaluation method.
electromagnetic loop networksecurityG1 methodcore main networkprogram evaluation
万方数据
维普
