전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

  • 제52권4호
  • /
  • Pages.30-36
  • /
  • 2015
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  • 2287-5026(pISSN)
  • /
  • 2288-159X(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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가공 배전선에 의한 전자유도 발생 전류 계산 방법

Formulation of Calculation Method for Inducing Current by Aerial Power Distribution Line

  • 이상무 (한국전자통신연구원 표준연구센터)
  • Lee, Sangmu (Protocol Engineering Center, Electronics and Telecommunications Research Institute)
  • 투고 : 2014.12.22
  • 심사 : 2015.04.03
  • 발행 : 2015.04.25
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초록

전력선 시설 중 가공 배전선에 의하여 인근 통신선에 전자유도를 발생시키는 전류를 계산하는 방식을 수립하였다. 가공 배전선의 중성선은 50 m 마다 접지되어 있어서 부하 전류의 귀로 성분이 대지로 누설되기 때문에 주변의 통신선에 전자유도 장해를 발생시키게 된다. 현재 국가 기술기준에서 정하고 있는 방법에 의하면 귀로 전류가 흐르는 중성선을 하나의 차폐 도체로 간주하여 기유도전류를 산정하므로 통신선의 병행 위치에 따른 대지 귀로 전류의 누적적 변화 특성이 반영되지 못하여 계산된 유도전압의 실측값에 대한 오차가 커지지만 실제로 유도를 발생시키는 원인이 되는 대지 귀로 전류를 계산하는 방식을 적용하면 1000 %가 넘는 기존 계산 편차를 100 % 이내로 현격히 줄여주는 효과를 나타내었다.

The formulation of calculation method for electromagnetic inducing current by aerial power distribution line is established. Nearby telecommunication cables can be induced due to the leakage of neutral current because the neutral line of power distribution is grounded at every 50 m distance. By the existing calculation method, the neutral line is regarded as a shielding conductor and the neutral current roles as an inducing current. So the error range to real measurement value is largely extended because the changing effect of leakage current flowing in the ground is not reflected. The leakage current returns to the power substation through the ground and is cumulated as being closer to the substation. When this practical inducing mechanism is applied, the deviation rate of calculation can be drastically reduced within about 100 % range compared to 1000 % of the exsiting method.

키워드

참고문헌

  1. Ministry of Science, ICT and Future Planning, The rules about the technical regulation of broadcasting and telecommunication facilities, Clause 9, Mar. 23, 2013.
  2. Radio Research Agency, The technical regulation on detailed calculation methods of power induction voltages, RRA Notice No.2012-10, May. 11, 2012.
  3. Sangmu Lee, Yoon-Myoung Gimm, Changsoo Eun, "Experimental Verification of Induction Phenomenon onto Telecommunication Line by Applying Its Occurrence Mechanisms using an Artificial ELF Source Generator", JKIEES, Vol.10, pp.276-281, No.4, 2010. 12.
  4. SangmuLee,"Earth Reflection Effect Analysis in the Environment of Line Source Induction", Journal of The Institute of Electronics and Information Engineers, Vo.50, No.4, pp.786-792, Apr. 2013.
  5. ITU, Inducing currents and voltages in power transmission and distribution systems, ITU-T DIRECTIVES concerning the protection of telecommunication lines against harmful effects from electric power and electrified railway lines: VOLUME V, pp.7-14, 1999
  6. IEEE, IEEE Recommended Practice for Inductive Coordination of Electric Supply and Communication Lines, pp.9-14, IEEE Std 776-1992
  7. ITU, Operator responsibilities in the management of electromagnetic interference by power systems on telecommunication systems, pp.42-44, ITU-T K.68
  8. ITU, CALCULATING INDUCED VOLTAGES AND CURRENTS IN PRACTICAL CASES, ITU-T DIRECTIVES concerning the protection of telecommunication lines against harmful effects from electric power and electrified railway lines: VOLUME II , pp.141-156/298-314, 1999.
  9. Radio Research Agency, The standardized test method on the technical regulation of broadcasting and telecommunication facilities, RRA Notice No.2012-17, Sep. 28, 2012.
  10. Sangmu Lee, Munhwan Choi, Pyung-Dong Cho, "The Protection of Telecommunication Service against Electromagnetic Interference by a Power Line", Summer Conference on Information and Telecommunication Facilities, Korea Institute of Information & Telecommunication Facilities Engineering, pp.45-48, Aug. 2014.
  11. Sangmu Lee, Changsoo Eun, "Electromagnetic Field Analysis for Basic Estimation of Power Induction Voltage", Journal of The Institute of Electronics and Information Engineers, Vo.47, TC-No.5, pp.60-68, May. 2010.

피인용 문헌

  1. 가공 배전선의 전자유도전압에 대하여 대지 귀로전류 원리를 반영한 중성선 차폐계수 계산 방법 vol.17, pp.7, 2015, https://doi.org/10.5762/kais.2016.17.7.86