Research On Operation Mode Of Low Loss Power Network Based On Reliability Constraints

Electricity is the most important basic energy industry in the development of national economy.Power Grid Corp must provide reliable and high quality electrical energy to the user.Distribution network directly connected with the user,is one of the important link to ensure the quality of power.In the distribution network,there are a lot of subsection switches and contact switches,so we can change the status of these switches to change the way to realize the distribution network operation.Usually the operation mode of distribution network is formulated according to the operation experience of the dispatcher,and generally only considering voltage and transmission limit constraints.There are problems such as the randomness of the work,the operation of the economy and so on.Future distribution network will be more complex contact.The Power Grid Corp put forward higher request to the reliability and economy of distribution network.When the distribution network users access,unreasonable access point caused by excessive loss,reliability and other issues.This paper studies the related theory at home and abroad,the reliability of line loss management.On the basis of ensuring reliability,the research of low loss operation mode is carried out.This paper constructs a model of distribution network.for Nanning Power Supply Bureau,this model takes the minimum power loss as the target,and the power supply reliability,power flow balance,voltage magnitude and current offset are the constraint conditions.In this paper,an evolutionary programming algorithm combined with an improved random mutation strategy is developed to search the optimal switching state of the distribution network.A information system has be developed to configure the distribution network operation mode.It provides provides a method to improve the reliability and economy of power distribution network.