Ground Fault Protection in Frequency-Selective Grounded Systems Fed by a Single Transformer
2022 IEEE Industry Applications Society Annual Meeting (IAS), Michigan, Amerika Birleşik Devletleri, 9 - 14 Ekim 2022, ss.1-8, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/ias54023.2022.9939836
- Basıldığı Şehir: Michigan
- Basıldığı Ülke: Amerika Birleşik Devletleri
- Sayfa Sayıları: ss.1-8
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
This paper presents experimental results for performance tests of ground fault protection schemes applied to a frequency-selective grounded system supplied by a single transformer. Frequency selective grounding systems are designed to present low ground impedance (similar to solid grounding) to high frequency zero-sequence current components and impedance like that of a low-impedance grounded system to fundamental zero-sequence components. The variable impedance of the grounding scheme can impact the response of ground fault protection in terms of accuracy and timing. The laboratory setup includes a single 35kVa 3-phase source transformer with a 340/208-volt secondary voltage. Experimental results detailed in this paper demonstrate the response that may be expected of various types of GFP schemes under fault and non-fault events and conditions.