Urban Distribution Network Connection Pattern Optimize Choosing Research Base On Integrate Endow Proportion Method

Urban distribution network is an important proportion of electric power system,which is not only the burthen center of electric power system,but also one of the important basic establishments of urban modernize construction.Urban distribution network building can't be fit for urban economy and society development at present,one of the most important causation is the illogicality of distribution network.So doing scientific and reasonable layout of urban distribution network is advantaged to guarantee the rationality of electric power system's reconstruction and the security and economy of electric power system,what's more,it is also advantaged to advance the circulation and management's level and circulation efficiency of electric power system.And at the same time,it can depress the network wasting of the system,elevate the reliability of the power supply,provide the base to distribution network automation.In this text,the familiar distribution network connection pattern at home and abroad is introduced,the familiar connection pattern of trolly wire and cable is traversed,the advantage and disadvantage is concluded,and every connection pattern's power supply precept chart is described.The investigation objects of distribution network connection pattern choosing in common use is summed up,each characteristic and problem is found out.Four attribute guidelines of estimating distribution network connection pattern are advanced,they are reliability,economy,actualization and expansibility.Every guideline's parameter and calculating method is analyzing.On the base of introducing subjective endow proportion method and objective endow proportion method,the integrate endow proportion method is advanced,which has both subjective endow proportion method and objective endow proportion method's advantage.The endow proportion method in 10kV distribution network connection pattern's selection is integrated,which has great superiority and rationality. The method of using the integrate endow proportion method in counting the 10kV distribution network connection pattern's selection is advanced,the optimize matrix is constituted,and the counting approach is summed up.The integrate endow proportion method in a region on the southward of our country is applied,the actuality distribution network pattern and the developing direction is analyzed,the method to evaluate every precept of trolly wire and cable is used,and the optimization connection pattern,and elicit the conclution is found.Through the analyzing,the four attribute guidelines are educed and the integrate endow proportion method in 10kV distribution network connection pattern's selection is proved to have superiority and rationality,which considering more factors and avoiding the difficulty of excessive aim function.This method has great meaning in correlative practice.