Based On The Power Supply Capability Of Urban Distribution Network Coordination Planning Method And Its Application

Urban distribution network is an important infrastructure of city modernization and the necessary energy supply system,as the links of end users and hair,transmission system,the construction quality directly affect the development of urban economy,improve the quality of people’s living standard and the optimization of investment environment,safe and reliable in the guarantee user’s continuous power supply is a very important link.For a long time,many cities in our country there is insufficient power supply ability of power grid,the network transfer capability uncertainty problems,grid equipment utilization rate is not high,influence the development of the distribution network.Scientifically evaluate urban distribution system has great social and economic meaning to power supply ability,this article mainly around the medium voltage power distribution system based on power supply capacity increase coordination planning method has carried on the related research.First,this paper based on the medium voltage power distribution system of the power supply ability to enhance coordination planning study of research ideas and research process,in order to guide for subsequent research.Secondly,from the basic concept of the power supply capability of distribution network,substation of power supply capacity,network power transfer capacity and power distribution system four aspects in detail elaborated the maximum power distribution network power supply ability of basic content.Based on the typical power supply model of high pressure on the low voltage side of transformer substation main wiring and the characteristics of medium voltage distribution network connection mode is analyzed,and then on this basis,build a typical distribution network model of the power supply.Then,according to the theory of power supply capacity calculation method and the typical power supply model based on the calculation method of its main properties,the typical power supply model of distribution network power supply ability of theoretical analysis and model calculation,the formation of all kinds of combination mode power solutions.Focuses on the distribution network power solutions of coordination with lower power,calculation results and solutions for the power supply capability of distribution network coordination planning design work to provide the reference.Then,the technical verification will be carried out in the typical power supply area of the city-city-old station,the north gate station,sai wan station-south field station-color station.Present situation of research,based on the typical power supply model of project plan analysis and specific project proposal,the vision of distribution network in the typical regions in the typical power supply model,theoretical turn power supply capacity and power supply.Finally,taking a city as an example,the application of the research results,studies the distribution network equipment utilization evaluation index system,power distribution network equipment utilization evaluation index values and reasonable distribution network equipment utilization evaluation standard,research of city distribution network equipment utilization situation and improve the utilization ratio of power distribution network equipment measures is given.