Estimation of winding insulation resistance to the corona discharges

20th International Conference for Students and Young Scientists: Modern Techniques and Technologies

工业技术;材料科学

Leonov, A.^1 ; Redko, V.^1 ; Soldatenko, E.^1

Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Corona discharges;    Corona resistance;    Electrical impulse;    High frequency HF;    Insulation resistance;    Insulation system;    Standard test method;    Winding insulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/66/1/012004/pdf
DOI  :  10.1088/1757-899X/66/1/012004

来源: IOP

【 摘 要 】

This article presents test results of enameled winding wires, characterizing an insulation electrical and mechanical strength. Standard and original test methods were used. Note that existing standard test methods do not estimate enamel insulation resistance to the electrical loads under winding operation of variable-speed drive. We show that estimation of wire corona resistance can be done by high frequency electrical impulse testing. Wire insulation plays the main role of reliability of insulation system.