A Novel Comprehensive Benefit Evaluation of IEGES Based on the TOPSIS Optimized by MEE Method

The integrated electricity–gas energy system (IEGES) coordinates the power and natural gas through P2G equipment, turbines other coupling components. IEGES can realize wide-range long-distance transmission of electricity, heat gas, truly large-scale cross-regional supply in space. At present, theoretical applicable to comprehensive benefit evaluation has not been established, economic, environmental social benefits are still at a preliminary study stage. Therefore, model is constructed, indicator designed along investment planning, supply, equipment operation, distribution terminal user. Through combination subjective objective weighting methods, weights each clarified matter-element extension theory (MEE) used improve technique for order preference by similarity ideal solution (TOPSIS), established. Finally, taking Beijing Yanqing IEGES, Tianjin Eco-city No. 2 Energy Station Hebei III as an example, practicability effectiveness verified.