Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2007.07a
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- Pages.109-110
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- 2007
Countermeasures to prevent contact between phases on overhead lines
가공송전선로 상(相)간 혼촉으로 인한 고장 예방 대책
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Park, Yoon-Seok
(Korea Electric Power Corporation) ;
- Kim, Yong-Rak (Korea Electric Power Corporation) ;
- Kim, Ho-Ki (Korea Electric Power Corporation) ;
- Kim, Won-Jin (Korea Electric Power Corporation) ;
- Choi, Jin-Sung (Korea Electric Power Corporation)
- Published : 2007.07.18
Abstract
Most transmission lines pass through mountainous terrain and deep valleys, to avoid populated areas. Accordingly, the impact of climate changes, environmental conditions and system expansion have caused an increase in transmission line system fault rates. KEPCO has developed and applied phase-spacers to reduce contact faults between phases. Contact between phases represented 9% of total line faults before the devices were installed. Phase-spacers have reduced faults by up to 3.4% since the phase-spacers were installed in 2005. Also, recently developed devices provide additional economic benefits as they cost about a third of the price as similar devices introduced in foreign countries. Phase-spacers are an effective way to prevent phase contact accidents by maintaining physical space between phases. These spacers will be implemented in areas where contacts are likely to occur. They are expected to reduce accident rates and improve power quality.
Keywords