Method of reducing the peak load of energy supply network systems and apparatus for limiting the power consumption of a consumer unit fed from an energy supply connection

• US 5,543,666 A
• Filed: 10/07/1994
• Issued: 08/06/1996
• Est. Priority Date: 10/09/1993
• Status: Expired due to Fees

• Current Assignee: Wolfgang Priesemuth
• Original Assignee: Wolfgang Priesemuth
• Inventors: Priesemuth, Wolfgang
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): PALADINI, ALBERT WILLIAM
• Application Number:
  US08/319,827
• Time in Patent Office: 669 Days
• Field of Search: 307/39, 307/31, 307/32, 307/33, 307/38
• US Class Current: 307/39
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 Home appliances

Abstract

A method of reducing the peak load of energy supply network systems to which a number of consumer units, each of which has several consumers, are connected. The power consumption of the consumer units can be limited to a predetermined limiting value. At least some of the consumers of a consumer unit are operated one by one in a sequence controlled by a preselectable coordination program if the power consumption of consumers that are switched on has reached the predetermined limiting value. An apparatus for limiting the power consumption of a consumer unit that includes several consumers and is fed from an energy supply connection, comprises a coordination means that is connected to separating switches which are linked to at least some of the consumers and controls the separating switches via a program in such a way that the power consumption of the energy supply connection does not surpass a predetermined limiting value. If the predetermined limiting value of the power consumption is exceeded or not reached, the means causes the separating switches to open or close in a fixed sequence that is defined by a preselectable coordination program with which the coordination means is programmed.

Claims

1. A method of reducing the peak load of energy supply network systems to which a number of consumer units, each of which has several consumers, are connected, whereby the power consumption of said consumer units can be limited to a predetermined limiting value, said method including the steps of:

if the power consumption of switched-on consumers of a consumer unit exceeds said predetermined limiting value, said consumers are switched off in sequence in conformity with a preselectable coordination program until the power consumption is below said predetermined limiting value; and

utilizing a decrease in the power consumption of said consumers of said consumer unit as a trigger for switching on said consumers in a sequence determined by said preselectable coordination program.

2. An apparatus for limiting the power consumption of a consumer unit that includes several consumers and is fed from an energy supply connection, said apparatus comprising:

separating switches linked to at least some of said consumers; and

a coordination means that is connected to at least some of said separating switches and controls the same in conformity with a program such that power consumption from said energy supply connection does not exceed a predetermined limiting value;

in particular, when said predetermined limiting value is exceeded, said coordination means opens separating switches in a sequence determined by a preselectable coordination program with which said coordination means is programmed, and when said predetermined limiting value is not reached, said coordination means closes separating switches in a sequence determined by said coordination program, closing of separating switches being triggered by a drop in power consumption of said consumers.

3. An apparatus according to claim 2, wherein after a drop in power consumption said coordination means closes a further separating switch if closing of a first separating switch leads to a surpassing of said limiting value and hence to a reopening of said first separating switch.

4. An apparatus according to claim 2, which includes manually operatable operating switches for individual ones of said consumers that are connected in series with said separating switches, and which also includes means for recognizing the closing of said operating switches, whereby a sequence of closing of said operating switches determines the sequence of closing of the pertaining separating switches.

5. An apparatus according to claim 2, wherein said coordination means contains a programmable electronic control unit for defining at least one of said coordination program and said limiting value.

6. An apparatus according to claim 2, wherein said coordination means contains a chronometer that establishes at least one of said limiting value and said coordination program.

7. An apparatus according to claim 2, which includes a safety unit having safety fuses via which individual ones of said consumers are connected to said supply connection, with individual ones of said separating switches being connected in series to individual ones of said safety fuses.

8. An apparatus according to claim 5, wherein said separating switches, along with further pertaining components, are disposed in a common housing of a unit that can be retrofitted.

9. An apparatus according to claim 8, wherein said programmable electronic control unit of said coordination means includes a manually operable input means that is disposed at a distance from said housing of said separating switches.

10. An apparatus according to claim 7, wherein said consumer unit is connected to several phases of said energy supply connection, and which includes throw-over switches that are controlled by said coordination means and via which individual ones of said consumers can be selectively connected to different ones of said phases.