Study of technical diagnosis of power transformers in power system of Republic OF Moldova

Abstract

Currently, the global power generation, as well as in the energy system of the Republic, more than 60% of power transformers have exceeded normative term of operation (25-30 years) with 10 to 20 years, operating without disabilities essential. World experience shows that most of the transformers do not require replacement on expiry legal and can be further exploited. The paper presents an analysis of methods for estimating the actual state of power transformer insulation in order to reduce the costs of replacement. It is recommended to move from service to service after hours as needed.