Study On The Energy Efficiency Evaluation Of The Index System For Power Grid Enterprises

With the fast development of the economy, the natural resources wastes so much thatmakes our country one of the most wasteful the in the world. The energy use efficiency isvery low in the electric power industry and the loss of energy is very great in the whole powersystem. And the potential is great to reduce the line loss, especially it has prominent strategicsignificance to reduce line loss in the power grid enterprises.Based on the research of the index system in energy conservation and emissionsreduction project of the power grid enterprise，this paper introduced the current integrated lineloss situation of the southern power grid, analyzed the practical significance to decrease theline loss further and set the right measures for power grid enterprises to make it better andthen it put forward the measures to reduce the line loss and finally established the lossevaluation index system to check it.This paper was mainly involved in the several following aspects:Firstly, it introduced the current situation of the line loss in power grid enterprises in ourcountry, especially in the southern power grid enterprises.It was pointed out that the space ofreducing line loss is enormous, and it is practically significant to take further effectivemeasures to reduce line loss.Secondly, this paper expounded the causes, formation, classification of the line loss andthen the role and the conditions in the theoretical calculation of the line loss and it pointed outthe current popular basical method of the line loss theoretical calculation.Thirdly, the paper analyzed various adverse effects on power system from the lineloss and then it introduced the main methods to reduce line loss and the main feasible measures.Fourthly, through the survey of the current situations of the line loss in so-me of the power supply enterprises of the southern power grid, it summarized the main problems existing in the line loss, and analyzed the potential for reducing it.Finally, according to the existing situations of the line loss and the analysis of thepotential for reducing line loss,it established the index system of decreasing the line loss and at the same time it gave the evaluation methods for reference.