Experimental measurements concerning the stator insulation partial discharge level of a hydro-generator of high power

International Conference on Applied Sciences 2017

Hatiegan, C.^1 ; Rduca, E.^1 ; Popescu, C.^2 ; Hamat, C.O.^3 ; Bra, A.^3 ; Anghel, D.^4 ; Pirsan, D.A.^3

Eftimie Murgu University of Resita, Department of Electric Engineering and Informatics, Traian Vuia str., no. 1-4, Resita

320085, Romania^1

Constantin Brancui University of Targu Jiu, Department of Electric Engineering, Eroilor str., no. 30, Targu Jiu

210135, Romania^2

Eftimie Murgu University of Resita, Department of Mechanical and Materials Engineering, Traian Vuia str., no.1-4, Resita

320085, Romania^3

Politehnica University of Bucuresti, Splaiul Independentei, nr.313, Bucuresti

060042, Romania^4

关键词: Cold state;    Evaluating method;    High power;    Hydro generator;    Stator insulation;    Surrounding environment;    Temperature level;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/294/1/012076/pdf
DOI  :  10.1088/1757-899X/294/1/012076

来源: IOP

【 摘 要 】

The paper presents a determining and evaluating method from an experimental point of view of the partial discharges level from the insulation of the stator of a synchronous hydro-generator of high power that appear at different temperatures. The temperature is measured directly on the coil with placed thermo-resistant elements between the superior and inferior bars. Also, the level of partial discharges with the coil age in a cold state, at the temperature level of the surrounding environment from within the stator, but also in a warm state at different temperatures, is measured. Through this method there is created the possibility of highlighting some eventual degradations of the coil insulation of a hydro-generator.