• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.222-223
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• 2011

본 논문은 인천지역 345kV 계통고장전류 저감을 위한 한류리액터 설치에 따른 362kV 50kA 차단기의 과도회복 전압 정격 초과 여부를 EMTP을 활용하여 검토하였다. 과도회복전압(TRV : Transient Recovery Voltage)은 크게 두가지, 최대전압(Vp)과 초기과도회복전압상승율(RRRV:Rate of Rise of Recovery Voltage)로 구분하며, 리액턴스 성분이 증가하며 RRRV가 상승하여 차단기가 고장전류을 차단시 절연파괴(열파괴)로 이어질 수 있다. IEC 62271-100 규정에는 RRRV를 정격차단전류의 100% 크기(T100%) 차단시 2kV/us이내로 규정하고 있으며 이 보다 작은 전류의 T90, T75 차단시의 규정치는 계산식에 의해 정해진다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.25 no.10
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• pp.59-66
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• 2011

In electric power system, the circuit breaker is not operated when the higher voltage then the rated TRV(transient Recovery Voltage) appeared in the circuit breaking, The TRV of a circuit breaker means the characteristics of reignition by the arc between two poles. and is decided by the value of connecting Impedance. In this paper we of carried out many kinds of experiments varying the types of bus, the types of installation, the length of installation between 22.9 [kV] level circuit breaker and MTR in general 154/22.9[kV] system, We also simulated the characteristics of TRV using EMTP-RV program. The suitability of TRV in assessed by Uc, RRRV(Rate of Rise of Recovery Voltage) which are defined by the international guide, IEC62271-100. The values of RRRV gained from the cable-made bus are 590[%] lesser than those from the NSPB-made bus respectively. So the triangled type is more rational in the aspect of TRV.

• KIEE International Transactions on Electrophysics and Applications
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• v.3C no.3
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• pp.73-76
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• 2003

In modern EHV (Extra High Voltage) class GCBs (Gas Circuit Breakers), the interruption capability for SLF (Short Line Fault) is one of the most important aspects of performance required for GCBs. Up to now, the SLF interruption capability of EHV class GCBs was partially assisted by the adoption of capacitors able to decrease the dV/dt of the TRV (Transient Recovery Voltage), particularly the TRV on the line side. This paper describes the technique to increase the SLF interruption capability of EHV class GCBs as well as the procedure to develop capacitorless l70kV 50kA GCB.

• Proceedings of the KIEE Conference
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• 1998.11c
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• pp.962-965
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• 1998

The circuit breakers had been withdrawn from 345 kV SIC substation. because these were made following the old IEC requirement(IEC 56; TRV rating) and insufficient current rating(2,000 A) for the system requirement(4,000 A). And, they are going to be reused at 345 kV UR substation and SJS switching section. This paper deals with the TRV(temporary recovery voltage) analysis results in order to reuse them. The analysis results are satisfied with the IEC requirements of RRRV(Rate of Rise of Recovery Voltage) and peak voltage($U_c$) from 2000 to 2010.