Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Reexamination Certificate
2004-09-22
2010-11-09
Vu, Bao Q (Department: 2838)
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
C307S035000
Reexamination Certificate
active
07830037
ABSTRACT:
The invention provides control of an electric load receiving power from a grid. The frequency of the grid is detected and used to determine a stress level on the grid. A high frequency detection is indicative of too little a load for the electrical power being supplied to the grid and, therefore, a low stress condition. A high stress condition may exist if there is too much load for the power being supplied to the grid. Adjustment of the power consumption of the load is prevented if the high and/or low stress states is determined. If a critical high or low stress condition is determined, the load is either prevented from consuming power completely or the load is set to a maximum power consumption state, respectively. The benefits of the invention are increased if the device is combined with a load controller which operates to control power consumption based on grid frequency and a variable, which, for the particular load, is to be kept within controlled limits.
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Carissa L. Dragos, Grid-Friendly Technoloty at Colorado State university, 2002, pp. 1-8.
Patent Abstracts of Japan; Publication No. 2003-92829 dated Mar. 28, 2003 and English translation.
Alix Yale & Ristas, LLP
Responsiveload Ltd.
Vu Bao Q
Zhang Jue
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