Study on Calculation of Investment Economicity in Electric Grid Production and Overhaul Projects
At present the electric grid production project lacks systematic and effective investment economicity calculation models.In addition the relatively high incidence low beneficiality of investment in overhaul project of the electric grids hin-ders the sustainable development of electric grids.In view of this,inspired by the theory of technical economics and ac-counting costs,this paper proposes the economicity calculation model of electric grid overhaul projects.First the research,development status and disadvantages of investment economicity in China's electric grid overhaul projects are clarified and analyzed.Then based on the technical characteristics of electric grid overhaul and the current value calculation,the basic principle of cost calculation models,income current value calculation models and project economy analysis models are pro-posed.Finally,a case analysis of investment economy calculation on the overhaul of an actual 220 kV main substation is given,which verified the effectiveness and accuracy of the proposed model.