Electricity: electrical systems and devices – Safety and protection of systems and devices – Generator protective circuits
Patent
1990-08-13
1992-11-10
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Generator protective circuits
361 79, 361 21, H02H 706
Patent
active
051629640
ABSTRACT:
A connection control device for controlling the connection of a small generator unit, which is installed at the consumer's location, to an electric power system. The connection control device detects variations in frequency components which result from interruptions in the distribution of electric power to the consumer from the electric power system. When a significant variation in a frequency component is present, the connection control device disconnects the consumer from the electric power system in order to prevent injury to line workers.
REFERENCES:
patent: 4752697 (1988-06-01), Lyons et al.
patent: 4851782 (1989-07-01), Jeerings et al.
Abstract of Japanese Patent JP-A-63 287 328.
Abstract of Japanese Patent JP-A-63 294 222.
Ranade, Satish J. et al., "A Study of Islanding in Utility-Connected Residential Photovoltaic Systems", IEEE Transactions on Energy Conversion, Sep. 1989, No. 3, pp. 436-445, N.Y.
Higasa Hiromasa
Ishikawa Fumihiko
Matsumura Shigenori
Yamanaka Soichi
Jackson S.
Nissin Electric Co. Ltd.
Pellinen A. D.
Shikoku Electric Power Co., Inc.
Shikoku Research Institute Incorporated
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