考虑电动汽车充放电的微电网运行优化

Consideration of Micro-grid Operation Optimization with Electric Vehicle Charge and Discharge

在电动汽车接入微电网时,EV放电可被视为微电源,充电时可被视为负载。文中选取一个包含电动汽车、光伏发电、风力发电、燃气轮机、蓄电池储能单元以及负载组成的微电网,对其进行经济运行优研究,并且提出一种数学处理方法,即模糊去约束法,对系统中的非线性约束条件进行处理,将其转化为线性约束条件。再结合传统线性优化算法,即单纯形法进行求解。与传统非线性优化算法对比,所提出的模糊去约束法优化效率有显著提高。

When electric vehicles access to micro-grid,the EV discharge can be regarded as micro-power,charging can be regarded as load.In this paper,we choose a problem of economic operation of microgrid with electric vehicle,photovoltaic power generation,wind power generation,gas turbine,battery energy storage unit and load composition as the research object,and study on its advantages and economic operation.A mathematical treatment method is presented in this paper,namely to bind the fuzzy method of nonlinear constraints in the system for processing,which can be converted to linear constraints.Combined with the traditional linear optimization algorithm,the simplex method is used to solve the problem.Compared to the genetic algorithm,the optimization efficiency of the system has been improved significantly.