#load changes

On load tap changing transformers play important roles in any modern power system since they allow voltages to be maintained at desired levels despite load changes. Traditionally, on load tap changer is a complex mechanical device, which has some deficiencies. On load tap changer of a transformer is presented, which can eliminate excessive conduction losses and suppress the arcing in the diverter switch, which is inherent in traditional on load transformer tap changers. The OLTC provides uninterrupted voltage is regulation of transformers under load. The transformer is equipped with a tapped winding whose tappings are connected with the tap selector of the OLTC. Most of the current commercially available automatic voltage regulators, just measure the low voltage side of the power transformer in order to control OLTC position. In this to improve tap changer control in order to perform properly also during a stressed situation in the 230 33 kV regulating power transformer for the substation.