| Title |
A Study on the Improvement of Unequilibrium in the Power System by Single Phase Load of the Receiver |
| Authors |
이재환(Jae-Hwan Lee) ; 전시식(Si-Shik Jeon) ; 김영달(Young-Dal Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2022.71.6.901 |
| Keywords |
Three-phase or single-phase load; Unbalance; Phase conversion for 3 phase to single; Distribution board; Single Phase Load |
| 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's energy saving policy and is expected to contribute to the development of the electricity industry by reorganizing related laws and regulations so that it can be applied to the site through active review and verification. |