Theory Research on High Performance Control Technology of Large Power Transformer Strong Oil-cooled System

For large power transformer strong oil-cooled system, an improved control method has been put forward, which is based on the traditional relay control, adding a PLC controller, and improving the reliability of the original control system. In combine with a variety of control strategies, the control system achieves the automatic control of the oil temperature. Applying the principle of variable frequency to achieve the purpose of energy saving. On the basis of the new proposed control system scheme, its hardware design has been accomplished which provides a theoretical basis for the new control system used in actual electricity production.