Fault location in the outer sheath of power cables

• Autorzy: Wang Q. , Tang Ch. , Wu G. , Chen G.
• Języki publikacji: EN

Abstrakty

EN

With the development of power systems in recent years, the total amount of power cables in operation has increased greatly, and there are growing reports of cable failure. Cable failures may be due to various intrinsic or extrinsic factors and can lead to massive economic loss. With regard to high-voltage cables, such as 110 kV power cables, there are very few accurate reports on the actual fault observed. This article first analyses the possible causes of power cable outer sheath failure. It then introduces the bridge and step voltage methods, which are traditionally used for cable fault locating, and describes a new method for accurate fault locating in 110 kV cables, which uses the bridge method to pre-locate the fault and then the step voltage method to accurately determine the precise fault locating. Field testing confirms the applicability of the new method for accurate fault locating in 110 kV power cables. The results shown in this article may provide a good reference for the development of future research in related fields.

Słowa kluczowe

EN

power cable; outer sheath; fault locating; bridge method; step voltage method

PL

kabel zasilający; powłoka zewnętrzna; lokalizacja usterek; metoda mostkowa; metoda napięcia krokowego

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2014
• Tom: Vol. 94, nr 4
• Strony: 250--258
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Wang Q.

• State Grid Chongqing Electric Power Co. Chongqing Research Institute, Chongqing 401123, China

autor

Tang Ch.

• College of Engineering and Technology, Southwest University, Chongqing 400715, China

autor

Wu G.

• State Grid Chongqing Electric Power Co. Chongqing Research Institute, Chongqing 401123, China

autor

Chen G.

• School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, United Kingdom

Bibliografia

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