GIS 진단시스템의 평가를 위한 PD 모의 펄스발생기 개발에 관한 연구 = A Study on the Development of PD Simulation Pulse Generator for Evaluation of GIS Diagnosis System

다국어 초록 (Multilingual Abstract)

The expansion and stable operation of electric power facilities are important factors with development of industrial facilities in modern society. In high-voltage equipment such as GIS, the insulation characteristics may be deterioated by environment-friendly gas adaption and miniaturization. There is also the possibility of accidents due to insulation breakdown due to the deterioration of power facilities. Therefore, it is necessary to extend the diagnosis system to continuously monitor the danger signals of these power equipment and to prevent accidents. Most of the internal defects in the GIS system are conductive particles, floating electrode defects, protrusion defects, and the like. In this case, a partial discharge phenomenon is accompanied. These partial discharge signals occur irregularly and various noise signals are included in the field, so it is difficult to evaluate the reliability in the development of the diagnostic system. In this paper, a study was made on equipment capable of generating a partial discharge simulated signal that can be adjusted in size and frequency to be applied to a diagnostic device by electromagnetic wave detection method. The PD simulated pulse generator consists of a user interface module, a high-voltage charging module, a pulse forming circuit, a voltage sensor and an embedded controller. In order to simulate the partial discharge phenomenon similar to the actual GIS, a discharge cell was designed and fabricated. The application of the prototype pulse generator to the commercialized PD diagnosis module confirmed that it can be used to evaluate the performance of the diagnostic device. It can be used for the development of GIS diagnosis system and performance verification for reliability evaluation.

참고문헌 (Reference)

1 J. Y. Yoon, "Preventative Diagnosis Technology of Gas Insulated Switchgear(GIS)" 2 (2): 28-34, 2003

2 J. Y. Yoon, "Partial Discharge Detection of GIS Technology Research(Final Report)" 2002

3 F. H. Kreuger, "Partial Discharge Detection in High-voltage Equipment" Butterworth 129-152, 1989

4 R. Baumgartner, "Partial Discharge - Part X : PD in Gas-insulated Substations-Measurement and Practical Considerations" 8 (8): 16-27, 1992

5 R. Baumgartner, "Partial Discharge - Part IX : PD in Gas-insulated Substations-fundamental Considerations" 7 (7): 5-13, 1991

6 D. Kopejtkova, "A Twenty-five Year Review of Experience with SF6 GIS, CIGRE 1992 Session Paper 23-101" 1-10, 1992