Differential protection with better stabilization for external faults

• Autorzy: Solak K. , Rebizant W.

Warianty tytułu

PL

Zabezpieczenie różnicowe z lepszą stabilizacją dla zwarć zewnętrznych

• Języki publikacji: EN

Abstrakty

EN

This paper presents a new differential protection scheme for transmission lines with application of fuzzy signal processing and support of phase comparison criterion. Traditional differential relays may have problems with proper classification of external faults with CT saturation. Better protection stabilization for such cases is obtained with support of fuzzy signal processing. In proposed solution the input signals as well as the standard percentage characteristic are fuzzified. The performance of presented fuzzy protection scheme has been tested with the signals generated with use of EMTP-ATP program and compared to the traditional solution.

PL

W artykule zaprezentowano nowe zabezpieczenie różnicowe, w którym zastosowano rozmyte przetwarzanie sygnałów oraz dodatkowe kryterium porównawczo-fazowe. Proponowane zabezpieczenie jest bardziej odporne na zwarcia zewnętrzne z nasyceniem przekładników prądowych, co potwierdziły przeprowadzone testy. Proponowany algorytm testowany był na sygnałach pochodzących z symulacji w EMTP-ATP, a wyniki porównano ze standardowym przekaźnikiem różnicowym.

Słowa kluczowe

EN

current differential criterion; current transformer; fuzzy logic; saturation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Present Problems of Power System Control
• Rocznik: 2011
• Tom: Nr 1
• Strony: 39--48
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Solak K.

autor

Rebizant W.

• Wroclaw University of Technology, Institute of Electrical Power Engineering Wyb. Wyspiańskiego 27, 50-370 Wrocław

Bibliografia

• [1] ADAMIAK M.K., PREMERLANI W., A New Approach to Current Differential Protection for Transmission Lines, GE publication GER-3981, 1998.
• [2] AREVA. P54x Application Guide, 2005.
• [3] DOMMEL H.W., Electromagnetic Transients Program. Reference Manual (EMTP theory hook), Bonneville Power Administration, Portland 1986.
• [4] GANG W., BAOJI Y., JIALI H., LI K.K., Implementation of Adaptive Dispersed Phase Current Differential Protection for Transmission Lines, Proceedings of the 5th International Conference on Advances in Power System Control, Operation and Management, APSCOM 2000, Hong Kong, October 2000, pp. 64-69.
• [5] IEEE C.37.110, IEEE guide for the application of current transformers used for protective relaying purposes, 2007.
• [6] KANG Y., KANG S., CROSSLEY P., An algorithm for detecting CT saturation using the secondary current third-derivative function, Proceedings of the IEEE Bologna PowerTech Conference, 23 26 June 2003, pp. 320-326.
• [7] KASZTENNY B., VOLOH I., UDREAN E.A., Rebirth of the Phase Comparison Line Protection Principle, 59th Annual Conference for Protective Relay Engineers, 4 6 April 2006, pp. 193 -252.
• [8] REBIZANT W., WISZNIEWSKI A., SCHIEL L., Acceleration of Transformer Differential Protection with Instantaneous Criteria, Proceedings of International Conference on Advanced Power System Automation and Protection, Korea, 24-27 April 2007, CD-ROM, paper 505.
• [9] VILLAMAGNA N., CROSSLEY P.A.^4 CT Saturation Detection Algorithm Using Symmetrical Components for Current Differential Protection, IEEE Transactions on Power Delivery, Vol. 21, No. 1, January 2006, pp. 38-45.
• [10] WARD S., ERWIN T., Current Differential Line Protection Setting Considerations, RFL Electronics, Inc., 2005.