CN100362721C - High-efficient energy-saving power supply method and control system - Google Patents
High-efficient energy-saving power supply method and control system Download PDFInfo
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- CN100362721C CN100362721C CNB2006100388864A CN200610038886A CN100362721C CN 100362721 C CN100362721 C CN 100362721C CN B2006100388864 A CNB2006100388864 A CN B2006100388864A CN 200610038886 A CN200610038886 A CN 200610038886A CN 100362721 C CN100362721 C CN 100362721C
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- power
- power supply
- electric loading
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- electric power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—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
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Abstract
The present invention relates to a high-efficient energy-saving power supply method and controlling system which belongs to the technical field of the control technology of power supply. The method comprises: the electricity using load is divided into primary and secondary parts according to the conditions, wherein the power supplying ends of the secondary electricity using load are provided with pressure difference controlling elements; the switch on and switch off of the pressure difference controlling elements are used for basically balancing electricity using power and generated power. A power supply controlling system for realizing the method comprises power supplying lines and the electricity using load connected with the power supplying lines; the power supplying ends of the secondary load in the electricity using load are provided with pressure difference controlling elements. The present invention can make automatically balancing regulation of the generated power and the electricity using power of an independent power supplying system realized through the classification of the electricity using load under the assistance of the simple differential pressure controlling elements. The cost of the present invention is low, the present invention can not bring obvious inconvenience to users when the classification is reasonable, and electric energy can not be wasted. Therefore, compared with the prior art, the present invention has outstanding and substantive characteristics and obvious progress and has the advantage of convenient application and use. The present invention is particularly suitable for a power generation and power supply system independently supplying the power by renewable energy resources.
Description
Technical field
The present invention relates to a kind of high-efficient energy-saving power supply method, also relate to the electric power supply control system of realizing this method simultaneously, belong to supply of electric power control technology field.Be specially adapted to renewable energy power generation electric power system from the net independent operating.
Background technology
During with the operation of the autonomous power supply system (for example middle-size and small-size hydroelectric power system) of renewable energy power generation, need to keep energy output and the mutual balance of system power consumption--can not bear the load that surpasses specified energy output, wish again institute's electricity is used as far as possible.
In the past, the conventional method that realizes above Balance Control is: when electric power during greater than generated output, according to the priority level that realizes dividing, close the lower circuit of rank (being commonly called as " operating a switch "), this method can only be applicable to the multiple-way feed system that power is bigger, its control result is local the power failure, makes troubles to the user.When electric power during less than generated output, a kind of solve thinking be method with the charging electric power storage with unnecessary electrical power storage in storage battery, but obviously only be applicable to the small-power system, and during the output of the electricity of storage battery, need be reverse into alternating current could use, cost is higher; The solution that another kind obtains practical application is by dummy load excrescent electric power to be consumed, to keep the mutual balance of generating and electricity consumption.Yet, so, wasted electric energy virtually.
Retrieval is found, application number is the automatic voltage regulation adjusting power supply that the Chinese patent of CN200310122794.0 discloses a kind of far-end varying load, comprise current feedback module, Voltage Feedback module, regulate power module, be connected apart from the terminal of power cable line by long with the far-end variable load, it is introduced, this invention can be mated the load of various impedance forms, and driving power is big, can be widely applied to the various occasions that need the voltage stabilizing of far-end variable load.In addition; application number discloses a kind of method and system that provides voltage to support to the load that is connected to utility power network for the patent application of CN01808025.1; this method can provide voltage protection by the voltage that promotes on the distribution wire between the interim voltage decrement phase that is caused by fault or other incident.If the voltage protection characteristic is greater than the voltage improvement characteristic of maximum, improves characteristic with fault current capacities characteristic and maximum voltage and determine that form with an inductance will be added to the impedance on the distribution network.Energy output and power consumption equilibrium problem when these patent application technology and not being suitable for solve above autonomous power supply system operation.
Summary of the invention
The objective of the invention is to: at the problem of above prior art existence, propose a kind of can realize automatically autonomous power supply system generated output and electric power in a basic balance efficiently utilize method of supplying power to, this method should cost economy, can reduce bringing inconvenience, avoid energy waste simultaneously to the user.In addition, the present invention also will provide the electric power system of this method of employing, thereby it is applied conscientiously.
In order to reach above purpose, high-efficient energy-saving power supply method of the present invention may further comprise the steps:
1) taking the circumstances into consideration to be divided into basic load and less important load with electric loading (for example charger, warmer, corridor lamp etc. being not to need constantly with electric loading, and temporary transient outage is little to user's influence, can be included into less important load of supply line will be connect in the electric power system; And the sudden power such as illumination in computer, important place will be used electric loading to what the user made troubles, should be classified as basic load);
2) at less important feeder ear tipping pressure reduction control element with electric loading;
3) total electric loading of using of online use is less in system, and when total electric power caused system voltage to rise less than generated output, the pressure reduction control element was closed fully, and the increase system always uses electric loading, makes electric power and generated output in a basic balance;
When 4) online use always bigger with electric loading in system, total electric power caused system voltage to descend greater than generated output, the pressure reduction control element partially or completely disconnected, and reduces system and always uses electric loading, makes electric power and generated output in a basic balance.
Adopt the energy-efficient electric power supply control system of above method to comprise supply line and the electric loading of using that meets supply line, described feeder ear tipping pressure reduction control element with the less important load in the electric loading.When described pressure reduction control element causes system voltage to rise when the total electric power of system less than generated output, closed fully; When the total electric power of system causes system voltage to descend greater than generated output, partially or completely disconnect.
Obviously, the present invention passes through the classification with electric loading, and by simple pressure reduction control element, can realize the Automatic Balance Regulation of autonomous power supply system generated output and electric power, its cost economy, and as long as classification rationally, just can not bring obvious inconvenience to the user, and can not waste electric energy, therefore compared with prior art, have outstanding substantive distinguishing features and obvious improvement, exploitativeness is strong, is easy to apply.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the system configuration schematic diagram of the embodiment of the invention one.
Fig. 2 is the system configuration schematic diagram of the embodiment of the invention two.
The pressure difference switch circuit theory diagrams that Fig. 3 adopts for the present invention.
Embodiment
Embodiment one
Present embodiment is the energy-efficient electric power supply control system that utilizes water for producing electric power, and as shown in Figure 1, behind current urgent protective valve of process and the flow control valve, drives the hydraulic turbine, the motor generator generating.The electric power via controller output of generator.The power transmission line pass is divided into two-way, and one the tunnel is the basic load circuit that need to guarantee normal power supply, wherein and be connected with electric loading such as illumination, television acoustics, refrigerator, cooking electrical equipment, electric tool; Another road has been the less important loaded line of peak load shifting effect, wherein and be connected with the temporary transient outage of water heater, charger, corridor lamp, warmer, standby electrical equipment, decorative lamp and so on to user's influence little use electric loading.At each less important feeder ear tipping pressure difference switch with electric loading.
Pressure difference switch is made of power circuit, sampling comparison circuit and relay on-off circuit as shown in Figure 3.Power circuit wherein is made of transformer transformation, the rectification of bridge-type ballast, capacitor filtering and 7812 voltage stabilizing chip loop of voltage regulation, and being used for provides comparative voltage to the sampling comparison circuit, provides power supply to the relay on-off circuit; The sampling comparison circuit is made of dual comparator K1, K1, the front end of loop of voltage regulation connects the normal phase input end of dual comparator through divider resistance R1, the rear end of loop of voltage regulation connects the reverse input end of dual comparator respectively through adjustable resistor R4, R3, the output of dual comparator meets switch relay coil J2 and latching relay coil J1 respectively, and two relay normally open contacts are serially connected in in the supply line of electric loading.
Become the 12V direct current after power supply process transformation, ballast, filtering, the voltage stabilizing, as a comparison the power supply of device K1, K2 and relay J 1, J2.And process transformation, ballast, filtered 15V left and right sides direct current become the comparative voltage of K1, K2 through R1 and R2 dividing potential drop before the loop of voltage regulation.
Adjust the R4 resistance, can make K2 when AC power 210V, trigger the J2 closure; Adjust the R3 resistance, can make K1 when AC power 230V, trigger the J1 closure.
In the course of work: when AC power during greater than 210V, J2 closure, because this moment, J1 was in off-state, so pressure difference switch disconnects, and can not be worked by the electrical appliance load of its control; When the power abundance, when voltage rises to 230V, the J1 closure, pressure difference switch is connected, and electrical appliance is devoted oneself to work.Afterwards, when supply voltage descends slightly,, therefore still keep connecting because J1 has the effect of self-holding contact; When power is obviously not enough, voltage drops to 210V when following, and the J2 relay disconnects, the also real simultaneously disconnection of J1, and electrical appliance quits work, and plays the energy-conserving action of peak load shifting.From whole power supply control angle, when the total electric power of system caused system voltage to rise less than generated output, pressure difference switch was controlled automatically and is connected the less important electric loading of using, and the increase system always uses electric loading; Otherwise pressure difference switch is controlled automatically and is disconnected the less important electric loading of using, and reduces system and always uses electric loading, thereby make electric power be tending towards in a basic balance with generated output all the time.
Superpressure beyond the system also can be connected to the superpressure control dummy load of superpressure (for example surpassing 240V) balanced action as required in transmission line.
Embodiment two
The energy-efficient electric power supply control system of present embodiment as shown in Figure 2, its basic structure and embodiment one is identical, difference is that supply line branches out multichannel, every branch road is drawn the normal power supply circuit through kilowatt-hour meter, connects the main electric loading of using in parallel; Simultaneously draw peak load shifting supply line, connect the less important electric loading of using in parallel through moving back the expense ammeter.Like this, can the family be unit, encourage rational utilization of electricity, be convenient to management.
Above embodiment both can be used for the existed system transformation, also can be used for newly-built system, and was practical.In addition to the implementation, the present invention can also have other execution modes.For example, the pressure reduction control element can adopt other structure except that pressure difference switch; Its control action can be to cut off fully, also can be that part is cut down the less important electric loading of using.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of requirement of the present invention.
Claims (6)
1. high-efficient energy-saving power supply method may further comprise the steps:
1) main with connecing being divided into of supply line in the electric power system with electric loading and the less important electric loading of using with electric loading;
2) at less important feeder ear tipping pressure reduction control element with electric loading;
3) total electric loading of using of online use is less in system, and when total electric power caused system voltage to rise less than generated output, the pressure reduction control element was closed fully, and the increase system always uses electric loading, makes electric power and generated output in a basic balance;
When 4) online use always bigger with electric loading in system, total electric power caused system voltage to descend greater than generated output, the pressure reduction control element partially or completely disconnected, and reduces system and always uses electric loading, makes electric power and generated output in a basic balance.
2. according to the described high-efficient energy-saving power supply method of claim 1, it is characterized in that: two-way is drawn by described supply line, is connected to parallel with one another main with electric loading and the less important electric loading of using respectively.
3. according to the described high-efficient energy-saving power supply method of claim 1, it is characterized in that: at least three tunnel branches are drawn by described supply line, and each branched line connects the main electric loading of using in parallel through ammeter, connect the less important electric loading of using in parallel through moving back the expense ammeter simultaneously.
4. an energy-efficient electric power supply control system comprises supply line and the electric loading of using that meets supply line, it is characterized in that: described feeder ear tipping pressure reduction control element with the less important load in the electric loading; When described pressure reduction control element causes system voltage to rise when the total electric power of system less than generated output, closed fully; When the total electric power of system causes system voltage to descend greater than generated output, partially or completely disconnect.
5. energy-efficient electric power supply control system according to claim 4 is characterized in that: described pressure reduction control element is a pressure difference switch, and described pressure difference switch is made of power circuit, sampling comparison circuit and relay on-off circuit; Described power circuit is made of transformation, rectification, filtering and loop of voltage regulation, in order to provide comparative voltage to the sampling comparison circuit, provides power supply to the relay on-off circuit; Described sampling comparison circuit is made of dual comparator, the front end of loop of voltage regulation connects the normal phase input end of dual comparator through divider resistance, the rear end of loop of voltage regulation connects the reverse input end of dual comparator respectively through adjustable resistor, the output of described dual comparator connects switch relay coil and latching relay coil respectively, and the normally opened contact of described two relays is serially connected in less important in the supply line of electric loading.
6. according to claim 4 or 5 described energy-efficient electric power supply control systems, it is characterized in that: be connected to superpressure control dummy load in the described supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100388864A CN100362721C (en) | 2006-03-16 | 2006-03-16 | High-efficient energy-saving power supply method and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100388864A CN100362721C (en) | 2006-03-16 | 2006-03-16 | High-efficient energy-saving power supply method and control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1832290A CN1832290A (en) | 2006-09-13 |
| CN100362721C true CN100362721C (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100388864A Expired - Fee Related CN100362721C (en) | 2006-03-16 | 2006-03-16 | High-efficient energy-saving power supply method and control system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312134A (en) * | 2012-03-06 | 2013-09-18 | 黎强 | Power distribution system |
| CN103529758B (en) * | 2012-07-05 | 2016-10-05 | 联想(北京)有限公司 | A kind of method for controlling power supply, power supply control apparatus and electronic equipment |
| CN103001228A (en) * | 2012-11-09 | 2013-03-27 | 广东易事特电源股份有限公司 | Secondary power supply device and secondary power supply method for prolonging working time of primary load |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4023846A1 (en) * | 1990-07-27 | 1992-04-16 | Licentia Gmbh | Load management circuit for washing machine and drum dryer - permits simultaneous operation of two appliances with one power supply line |
| EP0620631A1 (en) * | 1993-04-15 | 1994-10-19 | ZELTRON S.p.A. | Management system for domestic electric loads |
| US5521838A (en) * | 1994-02-22 | 1996-05-28 | Rosendahl; Glenn | Power supply |
| US20040075343A1 (en) * | 2002-09-05 | 2004-04-22 | Paul Wareham | System and method for power load management |
| CN2641914Y (en) * | 2003-08-15 | 2004-09-15 | 刘运一 | Household electrical appliances mains for ship generator |
| US20040262997A1 (en) * | 2003-06-27 | 2004-12-30 | Philip Gull | Backup power management system and method of operating the same |
-
2006
- 2006-03-16 CN CNB2006100388864A patent/CN100362721C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4023846A1 (en) * | 1990-07-27 | 1992-04-16 | Licentia Gmbh | Load management circuit for washing machine and drum dryer - permits simultaneous operation of two appliances with one power supply line |
| EP0620631A1 (en) * | 1993-04-15 | 1994-10-19 | ZELTRON S.p.A. | Management system for domestic electric loads |
| US5521838A (en) * | 1994-02-22 | 1996-05-28 | Rosendahl; Glenn | Power supply |
| US20040075343A1 (en) * | 2002-09-05 | 2004-04-22 | Paul Wareham | System and method for power load management |
| US20040262997A1 (en) * | 2003-06-27 | 2004-12-30 | Philip Gull | Backup power management system and method of operating the same |
| CN2641914Y (en) * | 2003-08-15 | 2004-09-15 | 刘运一 | Household electrical appliances mains for ship generator |
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| CN1832290A (en) | 2006-09-13 |
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