Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Insulation Performance Enhancement of Existing Transmission Line Considering Overvoltage Analysis Result and Fault Characteristic

과전압 분석 결과와 고장특성을 고려한 기설 송전선로의 절연보강 방법에 관한 연구

  • 곽주식 (한국전력공사 전력연구원 송배전연구소) ;
  • 우정욱 (한국전력공사 전력연구원 송배전연구소) ;
  • 구교선 (한국전력공사 전력연구원 송배전연구소) ;
  • 김경탁 (한국전력공사 전력연구원 송배전연구소) ;
  • 권동진 (한국전력공사 전력연구원 송배전연구소)
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes a study that is to redesign insulation of transmission lines and determine required the numbers of insulators in order to enhance the insulation performance of existing transmission lines which were constructed with standard insulation design, considering overvoltage analysis results, probabilities and characteristics of faults. To ensure proper insulation distance without deteriorating the required performance, EMTP model is established to calculate maximum overvoltage in the line. The fault records and predicted outage rates due to lightning and contamination in the line were investigated and analyzed respectively. It presents a method to determine the numbers of insulators considering the probability and the characteristic of fault.

본 논문은 이미 표준 절연설계 값으로 건설되어 운전중인 송전선로의 절연거리를 과전압분석결과, 뇌사고 및 오손 고장 확률과 특성을 고려하여 재설계하고 소요 애자수량을 결정하기 위하여 수행된 연구결과이다. 송전선로의 절연성능을 훼손하지 않으면서 적절한 절연거리를 확보하기 위하여 EMTP 모델을 이용하여 선로에서 발생 가능한 최대 과전압을 계산하고, 뇌 고장실적 및 뇌사고율 예측계산결과와 오손 고장 확률을 조사 분석하였다. 분석결과로부터 고장 특성을 고려한 소요 애자수량의 결정방법을 제시한다.

Keywords

References

  1. KEPCO, 'Fault Analysis of Transmission Facility and Countermeasure in 2008', KEPCO Report, 2009
  2. KEPCO, 'Design Standard and Handbook of Transmission' KEPCO Standard, pp.7-35, 2001
  3. Central Research Institute of Electrical Power Industry in JAPAN, 'Electrical Design Handbook of 187[kV]-1000[kV] AC Transmission Line'
  4. E.B. Shim et al, 'Insulation Coordination Study of 765[kV] Transmission System', KEPRI Report of KEPCO, pp 104-105, 1995
  5. J.W. Shim et al, 'Field Study on Air Clearance of 765[kV] Transmission Line', KEPRI Report of KEPCO, pp 152-152, 1996
  6. Y.W. Kang et al, 'Development of Lightning Outage Calculation Program', KEPRI Report of KEPCO, 2007