Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1983-09-28
1986-08-19
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
323210, 322 29, G01R 2302
Patent
active
046072179
ABSTRACT:
Subsynchronous resonance is detected in an electric a.c. power supply system by determining changes in wave parameters of substantially successive half cycles and applying said changes as a relationship of said subsynchronous resonance. The parameter change measured is the wave period, and changes in the ratio of the difference of the period of positive and period of negative half cycles over the sum of the period positive and the period of negative half cycles is related to detection of subsynchronous resonance.
REFERENCES:
patent: 3610029 (1971-09-01), Carlson
patent: 3731527 (1973-05-01), Weaver
patent: 3813593 (1974-05-01), Tice
patent: 3886449 (1975-05-01), Wolfinger
patent: 3944846 (1976-03-01), Thompson
patent: 3999115 (1976-12-01), South
patent: 4051427 (1977-09-01), Kilgore
patent: 4080559 (1978-03-01), Wright
patent: 4106071 (1978-08-01), Sun
patent: 4125884 (1978-11-01), Sun
patent: 4208687 (1980-06-01), Sun
patent: 4218718 (1980-08-01), Sun
patent: 4292545 (1981-09-01), Hingorani
patent: 4329637 (1982-05-01), Kotake
patent: 4438386 (1984-03-01), Gyugyi
Southern California Edison Company, Inc.
Tokar Michael J.
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