A.C. Electricity power supply system and methods of and apparatu

Details A.C. Electricity power supply system and methods of and apparatu A.C. Electricity power supply system and methods of and apparatu

1981-07-13

1983-05-24

Griffin, Donald A.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

H02J 1300

Patent

active

043852416

ABSTRACT:
In an a.c. electricity power supply system, to guard against a "blackout", that is to say a cumulative supply failure caused by a fault leading to generating stations being overloaded and having to cease supplying a network, consumers are each provided with means responsive to the supply frequency and operative to reduce or cut out the consumer's load when the supply frequency falls below a predetermined value, which may be different for different consumers.

REFERENCES:
patent: 3529215 (1970-09-01), Xavier et al.
patent: 3866019 (1975-02-01), Cartier et al.
patent: 4064485 (1977-12-01), Leyde
patent: 4100426 (1978-07-01), Baranowski et al.
patent: 4245319 (1981-01-01), Hedges
patent: 4246492 (1981-01-01), Vandling
patent: 4317049 (1982-02-01), Schweppe
IEEE Frequency Actuated Load Shedding and Restoration, Jul.-Aug. 1971, pp. 1460 to 1468, vol. 90, No. 4.

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