Impact of MV sensors on differential protection performance

• Autorzy: Prokop L. , Prokop V.

Warianty tytułu

PL

Wpływ czujników średniego napięcia na właściwości zabezpieczeń różnicowych

• Języki publikacji: EN

Abstrakty

EN

Differential protection provides basic protection for power transformers, motors, generators, overhead lines, cables and other important equipment used in Medium Voltage (MV) systems. The main advantages of differential protection are selectivity and fast operation. However for proper operation differential protection needs to receive reliable information about primary currents. Therefore differential protection places special requirements on current transformers (CTs). Consequently CTs generally need to be designed with very high parameters that are not practical to achieve in all cases. MV sensors represent an alternative way for measuring currents and voltages in MV networks. Due to their linear characteristics, sensors are very accurate across the whole operating range and in particular do not have a problem with saturation. The paper introduces the latest development in sensors used for differential protection applications and offers new views on how sensors could improve differential protection performance.

PL

Zabezpieczenia różnicowe mogą wprowadzać ograniczenia. Dlatego w artykule przedstawiono czujniki określające precyzyjnie prąd I napiecie w sieci, bez ryzyka nasycenia.

Słowa kluczowe

EN

differential protection; current transformer; saturation

PL

zabezpieczenie różnicowe; czujnik; nasycenie energetyczne

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 11
• Strony: 81--84
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Prokop L.

• VŠB-Technical University of Ostrava

autor

Prokop V.

• Brno University of Technology

Bibliografia

• [1] Prokop V., Current transformer requirements for differential protection, Proceedings of the 8th International Conference Electric Power Engineering, Czech Republic, 2007
• [2] Javora R., Prokop V., Low-Power Current and Voltage Sensors for MV Applications, Proceedings of International Protection Testing Symposium, Austria, 2011
• [3] Stefanka M., Prokop V., Salge G., Application of IEC 61850-9-2 in MV Switchgear with sensor use, Proceedings of 22nd International Conference on Electricity Distribution, Sweden, 2013
• [4] Prokop V., MV sensors and differential protection, Proceedings of the 14th International Conference Electric Power Engineering, Czech Republic, 2013
• [5] Javora R., Hozoi A., P rokop V., Total accuracy of the whole measuring chain – Sensor & IED, Proceedings of 22nd International Conference on Electricity Distribution, Sweden, 2013