Research On Coordination Of Reliability And Economy Of Distribution Network In Jining Taibaihu District

Distribution network is at the end of the electric power system, connecting directly with all kinds of consumption customer,which is one of the most important link in the electric power system. With the development of the requirement to power quality from modern society, the focus on reliability and economy has become more and more important.During the period of planning and re-powering distribution network,How to coordinate the relationship between analyze and get the balance is a very important issue.Firstly,this paper introduced the current situation and the running target of the distribution network and the analyze the reliability and economy.then,point out some existing problems from the ability of supplying electric power,the structure and the management of the distribution network. Getting the result of the recent and further load prediction by the the natural growth method.In order to plan the efficient and liable distribution network,this paper introduced the important factors to the structure, the overall planning process,transfer capacity of the load in medium voltage network, emergency and contact, protection and segment and so on.Providing the target structure of the network and conforming the plan that transfer the current network to the target network. Planning the high voltage distribution network from the analysis of capability of step-up transformer, substation planning scheme and the capacity-load ratio.In the view of the requirement of reliability and economy to the circuit,this paper provided with the renew plan to the distribution network structure and the line corridor. By the effect analysis of the plan's implement,confirm that it is really practical.Based on the plan, the working quantities of the line and transformer has been calculated.Finally, some suggestions have been given to the target structure on the new area,renew area and control on the operation.