System of Signal Injection and Extractioo for Protection and Insulation Monitoring in Medium Voltage Networks

• Autorzy: Kyrychenko M. , Habrych M.
• Języki publikacji: EN

Abstrakty

EN

Simple overcurrent criterion is most often used for detection and elimination of ground faults in radial industrial medium voltage networks. Since in Poland medium voltage networks work with noneffectively grounded neutral point, the ground fault currents can reach very low values, especially under high resistance faults. Such faults cannot be detected by any protection. Therefore, new methods to detect ground faults and to control the insulation in medium voltage network are of great importance. In the paper the idea for monitoring insulation parameters of the system, based on the simultaneous use of two different signals of non-industrial frequency, injected into the controlled network, is presented and discussed.

Słowa kluczowe

EN

insulation; distribution network; ground fault; signal injection

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Present Problems of Power System Control
• Rocznik: 2017
• Tom: Nr 8
• Strony: 23--30
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Kyrychenko M.

• State Higher Educational Institution “National Mining University”, Ukraine

autor

Habrych M.

• Department of Electrical Power Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.

Bibliografia

• [1] HABRYCH M., MIEDZIŃSKI B., WANG XIN, Applicability of a Hall Sensor in directional ground fault protections of MV cable networks with no-effective earthing, M. Habrych, B. Miedziński, Xin Wang, Elektronika ir Elektrotechnika, 2016, Vol. 22, No. 5, pp. 26–31.
• [2] HÄNNINEN S., Single phase earth faults in high impedance grounded networks. Characteristics, indication and location, Technical Research Centre of Finland, Espoo 2001.
• [3] ŁUKOWICZ M., New method of data transmission delay estimation for feeder differential protection, Present Problems of Power System Control, Vol. 1, 2011, pp. 92–103.
• [4] MARCINIAK L., Wavelet criteria for identification of arc intermittent faults in medium voltage networks, Proc. of the IS „Modern Electric Power Systems, MEPS ’10”, paper 09.1, Wrocław, Poland, 2010.
• [5] LEI LI, ZHONG Li, Additional low frequency signal measurement method of insulation resistance about mine cable, Conference: International Symposium on Computer, Consumer and Control (IS3C), Natl. Chin Yi Univ. Technol, Xian, Peoples Republic of China, Date: Jul. 4–6, 2016, pp. 891–894.
• [6] SHKRABETS F., MISYATS Ye., KYRYCHENKO M., The structure of continuous insulation monitoring system in the 6–10 kV grids in mining enterprises, The Efficiency and Quality of Industrial Enterprises Power Supply: VI International Scientific and Technical Conference, Publishing Office PSTU, 2008, pp. 401–404 (in Russian).
• [7] SHKRABETS F., TSYPLENKOV D., KOVALEV A., KYRYCHENKO M., Insulation parameters of distribution grids: control and management, Electrical Engineering and Electromechanics, Issue 1, 2010, pp. 49–51 (in Russian).