Polyphase angle estimator

Details Polyphase angle estimator Polyphase angle estimator

1981-06-26

1983-08-09

Wise, Edward J.

Boots, shoes, and leggings

364481, 361 80, 361 82, H02H 316, H02H 318

Patent

active

043982557

ABSTRACT:
A high speed relay for detecting multiphase faults using operating and polarizing signals from static transmission line protective relays provides an instantaneous estimate of the relative phase angle between relay signals without any loss of relay security.

REFERENCES:
patent: 3673425 (1972-06-01), Plichta
patent: 3697811 (1972-10-01), Little
patent: 3931502 (1976-01-01), Kohlas
patent: 3983377 (1976-09-01), Vitins
patent: 4156280 (1979-05-01), Griess
patent: 4161011 (1979-07-01), Wilkinson
patent: 4321681 (1982-03-01), Sackin et al.
patent: 4329727 (1982-05-01), Premerlani
patent: 4371947 (1983-02-01), Fujisawa
Dommel et al., "High Speed Relaying Using Traveling Wave Transient Analysis", Paper A-78-214-9, IEEE PES 1978 Winter Meeting, New York, NY.
Esztergalyos et al., "Development, Design Application and Field Experience of an Ultra High Speed Relaying System for EHV/UHV Transmission Lines", Pennsylvania Electric Association Relay Committee Mtg., Oct. 1978, Harrisburg, Pennsylvania.
Takagi et al., "Digital Differential Relaying System for Transmission Line Primary Protection Using Traveling Wave Theory-Its Theory and Field Experience," Paper A-79-096-9, IEE PES 1979 Winter Meeting, New York, NY.
General Electric Co., "Type SLYP-SLCN Static Directional Comparison Relaying Description and Application", 1978.
Gallen, et al., "A Digital System For Directional-Comparison Relaying", IEEE Transactions on Power Apparatus and Systems, vol. PAS-98, No. 3, May/Jun., 1979.
Chen, et al., "Field Experience With a Digital System For Transmission Line Protection", IEEE Transactions on Power Apparatus and Systems, vol. PAS-98, No. 5, Sep./Oct. 1979.
Lee, et al., "An Ultrafast Fault Sensor For a Fault Current Limiting Device", IEEE, vol. PAS-98, No. 3, May/Jun. 1979.
Takagi, et al., "Fault Protection Based on Travelling Wave Theory--Part I Theory", 1977.

Affiliated with

Also associated with

Rating

Polyphase angle estimator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-590463