Shuxin Tian, Haozhong Cheng, Pingliang Zeng, Lu Liu, and Qingru Qi
UHV power grid, cost, social economic beneﬁt, vague set theory, indicator system
Ultra high voltage (UHV) power grid can get vast social economic beneﬁts based on the huge investment cost by optimizing power energy distribution. In this paper, life cycle cost (LCC) is introduced to analyse huge cost of UHV power grid and shadow price theory is used to evaluate huge potential social economic beneﬁts brought by UHV power grid. Based on these shadow prices, the beneﬁt
indicator system of UHV power grid is put forward. Vague set theory is used to determine the weight of cost–beneﬁt indexes, which can reﬂect each individual advantage in cost–beneﬁt indicator system. Two diﬀerent UHV power grid planning schemes in China have made some comparative analysis on the proposed evaluation indicator system.