Electrode line protection

Details Electrode line protection Electrode line protection

1989-09-13

1992-05-26

Stephan, Steven L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 42, H02H 316

Patent

active

051173239

ABSTRACT:
A converter station for power transmission by means of high voltage direct current has an electrode line protective device for detection of ground faults on the electrode line of the station. An alternating voltage generator injects an alternating signal with a predetermined frequency on the electrode line. The two ends of the electrode line are provided with suppression filters tuned to the measuring frequency. The suppression filter arranged at the remote end of the electrode line is matched, by means of a resistor to the wave impedance of the electrode line. An impedance measuring device senses the impedance of the electrode line at the feeding point in relation to the ground at the measuring frequency. An indicating signal is delivered from the measuring device if the impedance measured deviates from the impedance of the electrode line when in a faultless state.

REFERENCES:
patent: 4188574 (1980-02-01), Allington
patent: 4638245 (1987-01-01), MacPhee et al.
patent: 4939486 (1990-07-01), Bergdahl
"Power Transmission" by Erih Uhlmann, Springer-Verlag Berlin Heidelberg New York 1975, pp. 282-284.

Affiliated with

Also associated with

Rating

Electrode line protection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrode line protection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrode line protection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-424032