Final report: technical contributions to the development of incipient fault detection/location instrumentation

Technical Report · Tue Apr 01 04:00:00 EST 1986

OSTI ID:7242339

Anderson, W E; Ramboz, J D; Ondrejka, A R

The transmission of electrical energy by use of underground cables is increasing. Fault location techniques have certain limitations; incipient fault detection and location would help reduce the maintenance cost of these lines as well as improve the reliability of service. The report discusses some test results related to RF-probing techniques applied to high-voltage transmission lines. The high-frequency losses and attenuation in high-voltage cables places certain ultimate limitations on RF-probing techniques for incipient fault detection. Time-domain reflectrometry methods were employed to assess the RF-transmission properties of high-voltage cables at frequencies as high as 6 GHz. Fast-Fourier-transform deconvolution was used to obtain loss measurements as a function of frequency. The loss mechanisms were identified. The measurement hardware and methods are discussed as well as analysis approach leading to the conclusions.

• Research Organization: National Bureau of Standards, Washington, DC (USA). Electrosystems Div.
• OSTI ID: 7242339
• Report Number(s): PB-86-246154/XAB; NBSIR-86/3392
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
296002* -- Energy Planning & Policy-- Electric Power Transmission & Distribution-- (-1989)
DETECTION
ELECTRICAL FAULTS
MEASURING METHODS
POWER TRANSMISSION
POWER TRANSMISSION LINES
UNDERGROUND POWER TRANSMISSION