Study On Adjustment Strategy Of Imbalanced Three-phase Distribution Transformers In Dongxihu Wuhan

In recent years the rapid development of economy,the living standards of farmers increased significantly,especially after the completion of the transformation,the number of lighting appliances in rural residents.Because of the time difference of the user power equipment and the unscientific construction of the low voltage network,the three-phase load distribution of the low voltage distribution network is imbalanced,which has a great impact on the distribution network operation and power quality.So it’s great significance to study the strategy of three-phase imbalance adjustment in the agricultural network platform.This paper first introduces the definition of three phase imbalance in distribution transformer operation,and briefly describes the current situation of three-phase imbalance in our rural power grid area,and the difficulties encountered by power supply companies in solving this problem.Three-phase imbalance compensator,three-phase unbalance automatic phase shifter and manual adjustment are three methods to solve the problem of three-phase imbalance.Limited by the cost and reliability of the rural network area,the first two methods can not be widely applied to the transformation of the rural network area.How to apply the artificial adjustment plan to improve the three-phase imbalance in the rural area is the main research direction in this paper.Based on the actual situation of Wuhan Dongxihu District rural network area,we have a comprehensive grasp of the current situation of three-phase imbalance in Wuhan Dongxihu area and the load characteristics of various typical users.According to the different characteristics of the three-phase imbalanced area,the two main methods are put forward.Management,for three-phase imbalance status of Dongxihu District and related business process management requirements,proposed the three-phase load.In the field of field adjustment,the program based on the C++ compilation of artificial commutation is compiled and the software is developed to calculate the best artificial phase modulation strategy.Then,we selected two transformers for example adjustment and analysis,and compared the effect before and after the change of phase.Finally,the results are summarized,and the related deficiencies and ideas of improvement are analyzed.