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Comparison and Examination of the Measured Data With the Data from Other Company for the Conductor and Sheath Temperatures of Live 6 kV CV Single Core Cables

활선 6 kV CV 단심 케이블의 도체 및 표면온도 측정 데이터에 관한 타사 데이터와의 비교검토

  • Um, Kee-Hong (Dept. of Information Technology, Hansei University)
  • Received : 2017.03.08
  • Accepted : 2017.06.09
  • Published : 2017.06.30

Abstract

The demand for electric power is increasing every year in Korea. All the systems adopted at power stations in order to generate and transmit electric power should operate in perfect condition or reliability. The device for transmitting the generated high-voltage electric power is 6 kV CV single core cables. The manufacturing companies of the cables makes an official announcement that the operating lifetime of their cables is about 30years. But from the moment of operation the deterioration precesses of worsening the characteristics of cables starts. Since the reliability for the status of installed cables in deterioration has not been diagnosed, the cables can be broken at any unexpected moments. In order to prevent the abrupt cable accident by systematically monitoring the cable status, we have invented the first device in Korea. We have installed our device at Korea Western Power Co. Ltd. in order to diagnose the live cables. In this paper, we present our research results of measured temperatures of inner conductor and surface and the compared results of those data with other cable company. We also show that our results agree with those made by other company.

국내의 전기수요량은 매년 증가하고 있다. 발전소에서 전력을 생산하고 공급하기위하여 채택된 모든 장비들은 신뢰할 수 있는 상태에서 완전하게 동작하여야 한다. 생산된 고전압의 전기를 공급하기 위한 장비로서 6 kV CV 단심케이블이 사용되고 있다. 케이블 제작사는 케이블의 동작 수명이 약 30년 이라고 공개적으로 알리고 있다. 그러나 설치된 케이블이 동작을 시작함과 동시에, 성능이 악화되는 열화과정이 시작된다. 동작 중인 케이블의 열화 상태로 인한 신뢰성을 진단을 받지 않았기 때문에, 케이블은 예측하지 못하는 시점에서 언제든지 파괴될 수 있다. 우리는 케이블의 사고를 체계적으로 감시 및 예방하기 위한 측정 장비를 개발, 한국서부발전 주식회사(Korea Western Power Co. Ltd.)에 설치하여 활선 케이블을 진단하였다. 이 논문에서 우리는 케이블을 구성하고 있는 도체와 표면온도를 측정하였고, 타사의 데이터와 비교하여 서로가 일치한다는 연구결과를 제시한다.

Keywords

References

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