| WO/2009/104165 | ENERGY CONSUMPTION MANAGEMENT |
| WO/2023/055263 | POWER SUPPLY OF A NODE IN AN INFORMATION TECHNOLOGY NETWORK |
| JP5816540 | Power monitoring system |
THEREON JACOBUS JOHANNES (ZA)
| US4216384A | 1980-08-05 | |||
| US7242114B1 | 2007-07-10 | |||
| US4023043A | 1977-05-10 | |||
| EP0047089A1 | 1982-03-10 | |||
| US4208593A | 1980-06-17 | |||
| US4771185A | 1988-09-13 |
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Clαims
1. The electrical demand controller is a means of managing peak electrical power demand at the point of consumption.
2. Electrical power demand is controlled by measuring the TOTAL current consumed at any time by the consumer and switching identified loads on and off with a fixed on/off switching protocol.
3. The electrical demand controller is a means of protecting components of the electrical supply chain from point of generation to the end user, where there are sufficient installations of on a common grid:
4. The electrical demand controller protects the supply chain by managing power restoration peaks that occur following power outages by gradually introducing load restoration at end user level.
5. The electrical demand controller ensures an enhanced quality of electrical supply immediately after power restoration by reducing peak inrush currents to areas where the power is restored.
6. The electrical demand controller ensures an enhanced quality of electrical supply immediately after supply restoration by reducing peak in-rush currents to areas where the power is restored; this is achieved by means of an inbuilt random time generator operating between two fixed times, this phenomenon is enhanced as banks of controllers in a suburb will not operate in phase with each other.
7. The electrical demand controller protects components such a switchgear and sub-stations by reducing or eliminating the need for load-shedding.
8. The electrical demand controller protects end-user devices and appliances against over and under voltage faults.
9. The electrical demand controller is an intelligent device. No human intervention is required after installation and commissioning.
10. All activity from the device is achieved automatically without the need for remote suburban grid management networks.
11. The electrical demand controller makes use of different algorithms to determine separately the switching on and the switching off and the timing sequences for appliances and devices.
12. The electrical demand controller makes use of switching protocol that takes into account the safe and effective interruption cycles of devices and appliances.
13. The electrical demand controller avoids the unnecessary switching on and off of devices and appliances.
14. The electrical demand controller provides the consumer with minimal inconvenience and a perceived seamless application of power for devices and appliances due to the greater efficiency achieved with proper power management.
15. The electrical demand controller when installed in sufficient numbers in an area on a common grid ensures that power generating systems are efficiently, effectively and significantly enhanced by constantly reducing overall power demand peaks in that particular locality.
16. The electrical demand controller manages consumer distinctive power peaks uniquely according
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17. The electrical demand controller enables individual consumers are supplied from reduced current value main isolators.
18. The electrical demand controller is a means of effectively managing the power supply to a particular consumer where the power supplies are limited. In the event the allocated power supply does not meet the appliance load, the electrical demand controller, through efficient management, enables the use of devices and appliances within the available power constraints without inconvenience to the consumer.
19. The electrical demand controller allows for the integration of stand-by power generation where power is cut or shed by a power utility and a switch-over is made to a stand-by generator, the electrical demand controller automatically works with the stand-by system and drops or adjusts the set power requirements within the constraints of the generator.
20. The electrical demand controller protects stand by generators during start-up by allowing the generators to reach normal operating temperature before introducing controlled loads.
21. The electrical demand controller is able to operate with power utilities that may want to manage demand by 'remote control 1 . This type of demand manages the shedding of all loads with a fail to safe 'restore to normal mode' if for any reason the restore transmission is inadequate.
22. The electrical demand controller manages the setting of pre-set secondary shed loads with a fail to safe 'restore to normal 1 mode if for any reason the restore transmission is inadequate.
23. The electrical demand controller manages real time utility values transmitted during shed request transmissions with a fail to safe 'restore to normal mode if for any reason the restore transmission is inadequate.
24. The preceding Claims apply generally to domestic and residential applications but the claims also apply generally in commercial and industrial situations.
25. The electrical demand controller is not limited to any specific embodiment or configuration as hereinbefore generally described or illustrated. |
Electrical Demand Controller
The electrical demand controller relates to the identification and automatic regulation of multiple electric loads in such a way that it confro\s the maximum consumption of electricity to a location below a pre-nominated maximum and in such a way as to cause minimal disruption to the consumer.
Demands are continuously made by countries with inadequate electricity supply to reduce electricity usage as much as possible on a continuous basis. Switching off power consuming devices and appliances in a controlled regulated manor assists in the reduction of overall power demand , especially at peak periods.
Installing special switches to specific devices such as geysers that are switched on and off (ripple control) from a remote location by means of signals is a common way of addressing the power consumption problem.
This system is inadequate because only a single appliance may be controlled by a single switching device at any one time.
An inventive step believed to address this problem is a device that sheds the load of one or more nominated power consuming appliances by intelligent monitoring and switching. A single electrical demand controlling device may be programmed to constantly make a comparison between any number and or combinations of nominated power consuming devices that may, at any moment in time, be consuming power in excess of a pre-nominated maximum.
Should the above condition occur, any of the nominated power consuming devices may be de- activated for controlled periods and may then be re-activated so as to maintain power consumption within a pre-determined maximum.
According to the invention there « are provided receptacles or boxes housing various pieces of equipment referred to in the accompanying drawing by numerals "10".
Sets of circuit breakers, numeral "12" are generally clustered together which may be contained within the main switch/earth leakage device "31".
Typically the box "10" contains a rectifier and converter "40", and a comparator "50" which receives demand information from the rectifier and converter "40' via cable "41".
The rectifier / converter "40" receives signals from a current transformer "30" located on the incoming current feeder cable "20". The consumer may programme various power consuming devices or targets in the unit
Marked "60". The information received from "40" via cable "41" is compared to the programmed values pre-set in unit "60". Assessing the information determined by the comparator "50" commands are sent to the priority unit "70" for activation or de-activation as required. The priority unit "70" in turn sends commands to appropriate switching elements situated in the supply lines of various power consuming devices indicated by numerals "90.1 to 90.4" The power consuming elements "90.1 to 90.4" remain de-activated for a period after power restoration is called for, in order to alleviate switch gear and restoration criteria.
It is to be appreciated that any number of power consuming devices may be incorporated
only four have been shown for convenience.
It is also to be appreciated that the invention is not limited to any specific embodiment or configuration as hereinbefore generally described or illustrated.
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