Research And Application On Single-Phase Intelligent Distribution Technique

With the increasing economic growth, we are facing of the problem of energy shortage, the sustainable development of energy becomes more and more important. At the same time, with the development of smart grid, a large number of renewable energy join in distribution grid should be adapted, and on the other hand, the power loss of distribution network should be reduced. This is of great significance to the whole country and society, can effectively promote the development of our country to become a sustainable development, economic and environmental protection country. As the basis of grid connecting users, distribution network is too large high loss, low voltage, which reduces the reliability of power supply. Different low-voltage is used in intelligent single phase power distribution to achieve a single three-phase load of hybrid power supply. Thus, the length of the low voltage line in the distribution network project is reduced, the number of the distribution transformer is increased, and the power supply radius of the distribution transformer is effectively reduced. Therefore, the single-phase distribution is an effective way to reduce the power loss and investment, to fulfil the requirements of the development of smart grid.To solve the above issues, single-phase intelligent power distribution technology is studied in this paper, and targeted distribution programs of single-phase and three-phase load is proposed. The basic principle of single-phase intelligent power distribution method is explained, the intelligent way to single-phase power distribution in low voltage distribution network is analyzed, and concluded the wiring method of single-phase intelligent power distribution on high voltage side and low voltage side. The basic principle of intelligent single-phase transformer is described, and based on basic principle, the transformer voltage balance equations are concluded from theoretical analysis of no-load operation of intelligent single-phase transformer, load operating characteristics. Aiming at three main issues in the manufacturing process of laminated iron core transformer, loss reduction principle of single-phase intelligent transformer is concluded by formula derivation.In this paper, single-phase intelligent distribution line loss is computed by RMS current date, and according to the actual needs of the project, the monthly charge of theoretical line loss calculation method is proposed. Using by-point calculation method, dispersion loss coefficient method for line loss in voltage 10kV/20kV intelligent single match network were calculated separately; the use of the stage area and the voltage loss method of low pressure loss method lOkV single match following smart grid the line loss is calculated separately, and finally the trend of intelligent single-phase power distribution network were calculated, obtaining the characteristics of power flow calculation in intelligent single-phase distribution network. Based on the intelligent single phase power distribution project, overhead wire single-phase intelligent power distribution structure, single-phase intelligent power distribution cable basic structure, indoor laying, in ground content are analyzed in this paper; According to the typical engineering cases of intelligent single-phase distribution technology, the benefits of intelligent single phase power distribution project are compared and analyzed. The result shows that the use of single-phase intelligent power distribution system can effectively reduce line loss, and is significantly important in terms of energy loss.