Research On The Influence Of Distributed Generation Integration On Shijiazhuang Distribution Network Based On OpenDSS And Countermeasures

With the continuous increase of energy demand and the lack of fossil energy,as well as the serious environmental problems,the traditional energy consumption which is based on fossil energy has been unsustainable.So many countries have regarded effectively exploiting new energy such as wind energy and solar energy as an important strategic plan.Due to the uncertainty of distributed power output,it not only affects the actual operation status of power system,but also increases t he difficulty of power system scheduling operation.At present,as the support of electric power users,the distribution system in urban areas will have an impact on the distribution system after the distributed power supply is connected,which is a worthy research topic.For these reasons,this article selects the OpenDSS simulation software developed by the EPRI specifically for power distribution trends and analyzes the impact of distributed generation on the power distribution system.Firstly,a detaile d analysis of the model of distributed power supply,including fan power model,photovoltaic power model and energy storage power model.Secondly,the architecture,function modules,power component model and program configuration file of the OpenDSS simulation platform are briefly introduced.In the simulation platform,the pure three-phase and single-phase/two-phase distribution network models are set up,and the fan is set up.Power supply,photovoltaic power supply and energy storage power three kinds of distributed power supply detailed models,through an example analysis shows that the OpenDSS simulation platform can effectively and correctly calculate distribution network power flow with distributed power distribution.Thirdly,it introduces in detail the impact of distributed generation on the power distribution system after the grid connection,for example,the influence of distribution network voltage,distribution network harmonic current and distribution network loss,partial distribution network of Shijiazhuang as an example for simulation analysis,after the distributed power grid,to a certain extent,can improve the distribution system voltage and reduce distribution network losses,but will give the distribution system more harmonic pollution.Finally,according to the analysis results,corresponding countermeasures are proposed to balance the impact of distributed power supply on the distribution network.Therefore,we must attach great importance to the distributed power grid optimization configuration.