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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Min Jee Kim Kyungwon Park Kil-Young Ahn Young-Geun Kim Dong-Kyun Lim |
| Copyright Year | 2015 |
| Description | Author affiliation: Electro Technol. R&D Center, LSIS Co., Ltd., Cheongju, South Korea (Min Jee Kim; Kyungwon Park; Kil-Young Ahn; Young-Geun Kim) || Distrib. Oper. Dept., Korea Electr. Power Corp., Daejeon, South Korea (Dong-Kyun Lim) |
| Abstract | Watertight 25.8 kV/600 A/12.5 kA fault current limiter (FCL) was developed to realize the protection coordination by limiting fault current at 22.9 kV underground distribution systems. In order to maximize an effect of FLC, it is good to install the FCL near to the substation. This FCL is made of watertight structure with rupture disk to prepare for rainy season, and composed of fast fault detector (FFD), mechanical fast switch (FS) and current limiting resistor (CLR). When fault occurs between FCL and downstream protection device in distribution line, the fault is detected by FFD and the fault current is changing its direction from FS to the CLR. If the fault is resolved by downstream protection device such as circuit breaker (CB), the load current flows to the FS again. The limitation of fault current by FCL is perfectly completed within 1 cycle from the moment of fault occurrence. The general technical specification of Korea Electric Power Corporation (KEPCO) for FCL was established, and the performance of FCL was verified by type test and field test. Recently, five FCLs have been successfully installed in KEPCO power grid for the purpose of commercial demonstrations. The distribution lines installed with FCL were analyzed focusing on the protection coordination by over current relays (OCRs) in comparison with before and after application of FCL. And also, we estimate and propose the optimal setting value of the relays. |
| Starting Page | 557 |
| Ending Page | 560 |
| File Size | 696282 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781467374149 |
| DOI | 10.1109/ICEPE-ST.2015.7368376 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-10-25 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Over current relay Protection coordination Optical character recognition software Circuit faults Fault current limiters FCL Fault currents Underground distribution line Circuit breakers Power systems Impedance Fault current limiter OCR |
| Content Type | Text |
| Resource Type | Article |
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