Abstract
Electricity companies supply high-quality three-phase equilibrium power to capacity. However, a single phase load of the acceptor results in an amorphous power system. In design and construction, the single-phase load is distributed equally to each phase to minimize the inequality, but inequality is inevitable due to the different time zones of use of many unspecified loads. In the acceptance area, a separate single-phase transformer is installed to supply single-phase power to minimize three-phase inequality, but installation costs and installation spaces such as single-phase transformers and special high-pressure breakers are required. To improve this irrationality, this paper aims to supply single-phase power by introducing an open△ inverse connection method to the transformer tertiary side. The second side of the three-wheel transformer supplies three-phase equilibrium power, and the third side supplies single-phase power by open△reverse connections. Compared to the single-phase power supply method by a single-phase transformer, the quantity and loss of cables on the high-pressure and low-pressure sides are the same, and special high-pressure breakers and single-phase transformers are not required. This is in accordance with the government
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