Average power level controller
First Claim
1. A controller associated with a dissipative electric load, that controls the level of average power applied to the aforesaid load by an electric energy distribution network that supplies said dissipative load with an AC supply voltage having a typical frequency value of 60 Hz via high power transformers that filter AC signals from high frequency signals, comprising:
- (i) means for detecting a predetermined pulse duration modulation signal embedded in the level of the supply voltage provided by the distribution network, said duration signal being a low frequency signal having a minimum width of greater than several seconds so that said duration signal may be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining the level of average power applied to said load; and
(ii) means for transmitting electric power originating from the distribution network to the load, the aforesaid means for transmitting comprising means for reducing the level of average power transmitted to the load, in response to said duration signal which is indicative of the command as detected by said means for detecting.
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Abstract
A controller associated with a dissipative electric load controls the level of average power applied to the load by an electric energy distribution network that supplies the dissipative load with a supply voltage. The controller comprises a detector for detecting a predetermined pulse duration modulation signal embedded in the level of the supply voltage provided by the distribution network, and a device for transmitting electric power originating from the distribution network to the load. The device for transmitting comprises a device for reducing the level of average power transmitted to the load, in response to a detection of said pulse duration modulation signal in the level of supply voltage. A decrease of the line voltage level for a given duration of power distribution voltage is initiated in order to control the average power consumption of the loads.
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Citations
32 Claims
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1. A controller associated with a dissipative electric load, that controls the level of average power applied to the aforesaid load by an electric energy distribution network that supplies said dissipative load with an AC supply voltage having a typical frequency value of 60 Hz via high power transformers that filter AC signals from high frequency signals, comprising:
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(i) means for detecting a predetermined pulse duration modulation signal embedded in the level of the supply voltage provided by the distribution network, said duration signal being a low frequency signal having a minimum width of greater than several seconds so that said duration signal may be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining the level of average power applied to said load; and (ii) means for transmitting electric power originating from the distribution network to the load, the aforesaid means for transmitting comprising means for reducing the level of average power transmitted to the load, in response to said duration signal which is indicative of the command as detected by said means for detecting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 21)
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11. A controller associated with a group of dissipative electric power loads that controls the level of average power applied to the aforesaid group by an electric energy distribution network that provides said group of dissipative loads with an AC supply voltage having a typical frequency value of 60 Hz via high power transformers that filter AC signals from high frequency signals, comprising:
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(i) means for detecting a predetermined pulse duration modulation signal embedded in the level of supply voltage supplied by said electric energy distribution network, said duration signal being a low frequency signal having a minimum width of greater than several seconds so that said duration signal may be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining the level of average power applied to said group of loads; and (ii) means for transmitting electric power originating from the distribution network to said loads of the aforesaid group, the aforesaid means for transmitting comprise means for reducing the level of average power transmitted to the group of loads in response to said duration signal which is indicative of the command as detected by said means for detecting. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A control system for controlling the level of average electric power applied to a dissipative load by an electric energy distribution network that provides said dissipative load with an AC supply voltage having a typical frequency value of 60 Hz via high power transformers that filter AC signals from high frequency signals, comprising:
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(i) means for modulating a predetermined pulse duration modulation signal in the level of supply voltage provided by the distribution network; and (ii) a controller associated with the aforesaid load, comprising; (a) means for detecting the aforesaid pulse duration modulation signal embedded in the level of supply voltage, said duration signal being a low frequency signal having a minimum width of at least about 30 seconds so that said duration signal may be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining the level of average power applied to said load; and (b) means for transmitting electric power, that originates from the distribution network to the load, the aforesaid means for transmitting comprising means for reducing the level of average power transmitted to said load in response to said duration signal which is indicative of the command as detected by said means for detecting. - View Dependent Claims (18, 19, 22, 23, 24)
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25. A method of controlling the level of average electrical power applied to dissipative loads by an electric energy distribution network that provides said dissipative loads with an AC supply voltage having a typical frequency value of 60 Hz via high power transformers that filter AC signals from high frequency signals, comprises the following steps of:
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(i) modulation of a predetermined pulse duration modulation signal in the level of supply voltage provided by the distribution network to the dissipative loads, said duration modulation signal corresponding to at least one of said loads, said duration signal being a low frequency signal having a minimum width of at least several seconds so that said duration signal may be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining the level of average power applied to said at least one load; (ii) detection of the aforesaid pulse duration modulation signal in the level of supply voltage at the level of each of said dissipative loads; and (iii) reduction of electric power provided by the distribution network to said at least one load in response to said duration signal which is indicative of the command as detected by said means for detecting. - View Dependent Claims (26, 27, 29)
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28. A control method according to clam 25, characterized in such a way that:
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(i) said step of modulating comprises modulation of several durations in the pulse duration modulation signal in the level of supply voltage, said durations corresponding to particular loads of said loads; (ii) said step of detection comprises detection of said durations at the level of each of said loads; and (iii) said step of reduction comprises reduction of the level of average power transmitted to said particular loads.
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30. A controller, associated with an electricity meter of a residence that measures consumption of electrical energy according to a predetermined scale of charges, said electrical energy being supplied to said residence by an electric energy distribution network that supplies an AC supply voltage having a typical frequency value of 60 Hz high power transformers that filter AC signals from high frequency signals, comprising:
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means for detecting a predetermined pulse duration modulation signal embedded in the level of supply voltage provided to said residence, said duration signal being a lower frequency signal having a minimum width of greater than several seconds so that said duration signal can be transmitted through said high power transformers, said duration signal having a duration indicative of a command for determining said scale of charges by which said electrical energy is measured by means of said meter, and generating a signal accordingly; and means connected to said electricity meter for modifying said scale of charges when said signal is generated.
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31. A controller of a level of average power applied to a dissipative electric lad by an electric energy distribution network that supplies the dissipative load with a supply voltage, comprising:
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means for transmitting electrical power originating from the distribution network to the load; means for detecting pulse variations of different durations greater than several seconds in the level of the supply voltage provided by the distribution network; means for interpreting the detected pulse variations to determine whether a change is be effected; and command means responsive to said interpreting means for instructing that the change be effected irrespective of the level of the supply voltage, the command means including the transmitting means being responsive to said interpreting means for varying the level of the average power transmitted to the load irrespective of the level of the supply voltage. - View Dependent Claims (32)
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Specification