Application of Variable Frequency and Inductance Serial Resonant in the Generator Test

Jianfeng Cheng
HIMALAYAL - SHANGHAI - CHINA

Abstract: This paper introduces requirements and basic principle of AC withstand voltage test of variable frequency and inductance serial resonant. Based on that, it also analyzes the characteristics of application of variable frequency and inductance serial resonant in electric power system and discusses the actual application situation of variable frequency and inductance serial resonant in Hubei Xisaishan Power Generation Corp., LTD.

Key Words: Variable frequency and inductance serial resonant, AC withstand voltage test, Generator test, application

Introduction
Power frequency withstand voltage test is the main project of generator insulation test. Because test voltage waveform and frequency is consistent with working voltage of the generator, test voltage acting on voltage distribution within insulation and breakdown performance are close to working condition of the generator. Therefore, Adopting power frequency AC withstand voltage test to inspect the insulation situation of the generator has the features of strong reality and high validity. It can effectively inspect local defects and reflect actual insulation level