Acceptance of Electric Vehicles Populations Distribution Network Access Capability Assessment

Abstract

With the contradiction between economic development and energy supply, environmental pollution is becoming more and more acute, saving energy and reducing consumption, reduce dependence on fossil fuels, has become an urgent need to solve the problem of sustainable development of China's economy. Electric vehicle is a new type of power system load, its charge are random in time and space, the large- scale electric vehicle centralized charging will greatly affect the traditional load curve, the impact of the security and stability of the power system operation. In this context, this paper proposes a macroscopic evaluation model of bearing capacity of electric vehicles in residential area based on distribution network. The model using the probability distribution method, considering the load of the existing distribution network, analysis of the existing distribution network transformers how electric vehicles can carry charge, as well as the residential area of the original load growth, residents of the area distribution transformer changes of EV charging load bearing capacity. KEYWORD: Assessment Model; Electric cars; Load curve