Research On Key Technology Of Three Phase Combined Power Transformer

Three-phase combined power transformer is designed to meet the special conditions of transport, development of a power transformer, this transformer to reduce shipping weight and dimensions taken a series of specially designed, single-phase production, a combination of tests, split transport and on-site assembly, and ultimately provided to the user is a complete three-phase power transformer capacity. Its good to meet a variety of harsh conditions of transport infrastructure as well as easy to install on a small footprint, low cost manufacturing, is at the remote mountainous highland areas such as the construction of the substation power equipment of choiceThe modular structure of power transformers for three single-phase transformers bellows Unicom will tank, and three-phase leads through bellows coupling groups in the internal implementation, using a common conservator, pressure switches, transformer oil. Dual-core transformer box type independent of each magnetic circuit, short-circuit winding fully consider anti-strength, impact strength and heat oil passages, respectively inner shield continuous and continuous winding, medium and low voltage coil using self-adhesive CTC. Three-phase leads via copper (copper) to complete the connection inside the tank, and then led through the casing outside the box. Overall conservator tank hanging on single-phase, three-phase due to the conservator in charge of the body to fill the oil tank so it is relatively larger single-phase, for the support and the overall strength of the earthquake simulation and verification needs.This paper analyzed three phase connection tube and strength of corrugated magnetic field through the magnetic field analysis, to reasonably determine the winding and lead structure, simulation and combined with the actual use under the conditions of the operating characteristics of the three-phase combined power transformer for accuracy. By studying the three-phase combined power transformer key technical factors, the use of a combination of theoretical analysis and experimental methods, developed a high-performance three-phase combined issue of power transformers, power transformers summed up the three-phase modular design specifications and technical documents for the future of this type transformer structure designed to provide basic information.