| With the raising of rural living standards, the composition of rural electric load has been changed. This paper has analyzed the advantages and disadvantages of single phase and three phase power-supply modes and, combining the reality of rural load in the city of Linfen in Shanxi Province, studied the power quality of rural electric distribution network in single and three phase combined power supply mode.The rural power load has the features such as great power demand for life, changing acutely with seasons, and scattered distribution. These characteristics determine that the traditional three-phase electricity lines in rural power distribution network have certain limitations. This paper combines the load characteristics in rural areas, analyzes the advantages and disadvantages of single-phase and three-phase power supply power supply, and studies in10kV single three-phase hybrid power supply mode for Linfen rural power distribution network client power supply quality. In this paper, we mainly study the following contents:1. The operation of single and three-phase combined power supply model is studied. Single-phase and two-wire system, single-phase and three-wire system, single and three-phase combined power supply system are analyzed. The application of single-phase distribution transformer of structural characteristics and electrical performance are introduced. With analyzing the operation of single and three-phase combined power supply model, the superiority of this power supply model is presented in the paper.2. The connection modes of10kV distribution network in urban and rural grid are studied, and the different of connection modes in overhead lines and cable lines are analyzed. The analysis of different connection modes take an important part in single and three-phase combined distribution technology design.3. Discussion on conforms to china's actual situation of rural power grids of single-phase and three-phase mixture distribution mode and its application. |
PDF Full Text Request