考虑环境成本的城市电网最优潮流模型

An Optimal Power Flow Model for the Urban Power Grid Considering Environment Cost

针对城市电网中分布式发电日益增多的情况,提出通过改变分布式发电机组的出力优化城市电网的有功潮流。考虑各种分布式发电对环境的不同影响,提出用环境价值标准衡量污染物对环境的影响,并结合排污费和环境预防成本建立分布式发电的环境成本模型,然后运用罚函数的思想建立考虑环境成本的最优潮流模型。选择原对偶内点法对模型进行求解。最后,对某城市电网数据进行仿真试验,结果表明考虑环境成本、生产成本和网损后,可以同时降低成本和网损、减少环境污染。

In view of the ever-increasing distributed generation in the urban power grid,appropriate power arrangement of distributed generation is presented to optimize active power flow of the urban power grid. By considering different effects of various kinds of distributed generation on environment,the environment value index of contamination is used to evaluate the effect on environment by contamination. A model is developed for environment cost including the charge for drainage and cost of environment pollution prevention. Then a model for OPF including environment cost is developed with the penalty function method. The primal dual interior point method is used to solve this OPF model. Finally,simulation test is carried out on the data of an urban power grid. The results show that with the environment cost,production cost,and grid loss taken into account,the cost and grid loss can be reduced and environment contamination mitigated at the same time.