CN103543678B - A kind of controller of configurable demand on power demand side - Google Patents
A kind of controller of configurable demand on power demand side Download PDFInfo
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- CN103543678B CN103543678B CN201310482734.3A CN201310482734A CN103543678B CN 103543678 B CN103543678 B CN 103543678B CN 201310482734 A CN201310482734 A CN 201310482734A CN 103543678 B CN103543678 B CN 103543678B
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Abstract
The present invention relates to a kind of controller of configurable demand on power demand side, the Current Transmit, voltage transformer pt, multi-class workload switches set, adjustable on-load switch, imput output circuit, communication interface and the feed circuit that comprise master controller MCU and be connected with master controller MCU respectively; The threshold value of multi-class workload switches set and adjustable on-load switch is set respectively by imput output circuit, master controller obtains user's current power requirement according to the data of Current Transmit and voltage transformer pt collection, and compare with the threshold value of multi-class workload switches set and adjustable on-load switch respectively, multi-class workload switches set and adjustable on-load switch carry out corresponding actions according to corresponding comparative result.Compared with prior art, the present invention has and realizes peak times of power consumption electric load step control, reaches and reduces peak period power demand quantity, reduces electricity cost, alleviates the advantages such as power supply and demand is nervous.
Description
Technical field
The present invention relates to a kind of power demand automatic control technology, especially relate to a kind of controller of configurable demand on power demand side.
Background technology
Demand Side Management refers to the management implemented electricity consumption one side, country guides user's few electricity consumption when peak by policies and measures, part power consumption during peak is moved on to low ebb, the Multifunctional electric when low ebb, for improving power supplying efficiency, optimizing a kind of management method of electricity consumption.Like this can when completing same with reducing electric quantity consumption and electricity needs when Electricity Functional, thus alleviate short of electricity pressure, reduction power supply cost and electric cost, make power supply and electricity consumption both sides receive more tangible benefits, reach the long-range object of economize energy and protection of the environment.
From China in recent years electric power continuous load statistics, the peak load year aggregated duration in the whole nation more than 95% only has tens hours, usually adopt the method increasing peaking generation installation to meet this part peak load at present, but peaking generation machine utilization factor is very low, run very uneconomical.If adopt the method for dsm, allow user's active participate come in, reduce power demand quantity in peak times of power consumption, thus cut down this part peak load, then can alleviate the pressure of power supply and demand anxiety, compare the installation of increase peaking generation with the obvious advantage.The two-part rate system price that country puts into effect differently to be charged according to spike Pinggu electricity price respectively according to different, period in season, the electricity price of power surges phase is far above the electricity price of low ebb phase, tou power price for residential electricity consumption is also wish that resident reduces peak period electricity consumption, reduces peak period power demand quantity just can allow user's power cost saving really by technological means.
Requirement refers in the time interval of specifying, the average power maximal value namely recorded in (be generally 15 minutes, slippage is 1 minute) in the requirement cycle, unit K W.The industrial and commercial user carrying out two-part rate system price will declare power demand quantity to Utilities Electric Co. every month, and requirement exceeds standard and will accept fine.Control the technological means that requirement is a kind of good peak regulation.A lot of intelligent electric meter has possessed the function that requirement is measured at present, but does not also automatically control the function of requirement.
Summary of the invention
Object of the present invention is exactly provide a kind of controller of configurable demand on power demand side to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of controller of configurable demand on power demand side, it is characterized in that, the Current Transmit, voltage transformer pt, multi-class workload switches set, adjustable on-load switch, imput output circuit, communication interface and the feed circuit that comprise master controller MCU and be connected with master controller MCU respectively;
The threshold value of multi-class workload switches set and adjustable on-load switch is set respectively by imput output circuit, master controller obtains user's current power requirement according to the data of Current Transmit and voltage transformer pt collection, and compare with the threshold value of multi-class workload switches set and adjustable on-load switch respectively, multi-class workload switches set and adjustable on-load switch carry out corresponding actions according to corresponding comparative result.
Described multi-class workload switches set comprises first order load switch, secondary on-load switch and three stage load switches, described imput output circuit arranges the threshold values of first order load switch, secondary on-load switch and three stage load switch motions, master controller detects user's current power requirement, when power demand quantity meets or exceeds the threshold values of user's setting, corresponding on-load switch disconnects to reduce power consumption; When power demand quantity is less than the threshold values of user's setting, corresponding on-load switch is closed recovers normal electricity consumption.
Described imput output circuit arranges lower limit threshold values and the upper limit threshold values of adjustable on-load switch, master controller detects user's current power requirement, when power demand quantity meets or exceeds the upper limit threshold values of user's setting, adjustable on-load switch disconnects completely, when power demand quantity is less than the lower limit threshold values of user's setting, adjustable on-load switch is completely closed recovers normal electricity consumption; When power demand quantity is between lower limit threshold values and upper limit threshold values, adjustable on-load switch regulates load export ratio.
Described adjustment load export ratio is specifically calculated as follows:
Wherein y is for regulating load export ratio, S is the upper limit threshold values of adjustable on-load switch, and D is user's current power requirement, and X is the lower limit threshold values of adjustable on-load switch, SB is the load export ratio that upper limit threshold values is corresponding, and XB is the load export ratio that lower limit threshold values is corresponding.
Described imput output circuit comprises LCD screen and button, sets the power demand quantity threshold value of multi-class workload switches set and adjustable on-load switch.
Described communication interface comprise too Netcom casually with RS485 communication port.
Compared with prior art, the present invention has the following advantages:
1, realize peak times of power consumption electric load step control, reach and reduce peak period power demand quantity, reduce electricity cost, alleviate the object of power supply and demand anxiety.
2, in peak times of power consumption, this controller can control allowing the electric load interrupted to be divided into three ranks, the ratio that adjustable load sets according to user is carried out regulable control simultaneously, reduces power consumption.
3, this controller can be used for the application scenarios such as business, building, factory, boats and ships microgrid.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of demand control of the present invention;
Fig. 2 is the structural representation of controller of the present invention;
Fig. 3 is the structural representation of demand threshold of the present invention setting.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
With reference to Fig. 1, power demand quantity is declared by the administrative authoritys such as user's superior Utilities Electric Co., and when the power demand quantity of user exceedes requirement setting value, the requirement of overages will accept to punish the electricity charge.Peak times of power consumption, a large amount of electricity consumptions that exceeds the quata can cause grid power not enough, causes generating nervous, or even the danger of mains breakdown.If can power demand quantity be controlled, do not produce the requirement that exceeds the quata, will be highly profitable.
As shown in Figure 2, a controller for configurable demand on power demand side, the current transformer 2, voltage transformer (VT) 3, multi-class workload switches set, adjustable on-load switch 7, imput output circuit, communication interface and the feed circuit 5 that comprise master controller 1 and be connected with master controller 1 respectively;
The threshold value of multi-class workload switches set and adjustable on-load switch is set respectively by imput output circuit, the data that master controller 1 gathers according to current transformer 2 and voltage transformer (VT) 3 calculate user's current power requirement, and compare with the threshold value of multi-class workload switches set and adjustable on-load switch 7 respectively, multi-class workload switches set and adjustable on-load switch carry out corresponding actions according to corresponding comparative result.
Master controller detects the electric current of alternating current by current transformer, and voltage transformer (VT) detects the voltage of alternating current, by the multiplicative integral computing to electric current, voltage, obtains current power requirement according to one minute slippage time algorithm.
Described multi-class workload switches set comprises first order load switch 61, secondary on-load switch 62 and three stage load switches 63, described imput output circuit arranges the threshold values of first order load switch 61, secondary on-load switch 62 and three stage load switches 63, master controller 1 detects user's current power requirement, when power demand quantity meets or exceeds the threshold values of user's setting, corresponding on-load switch disconnects to reduce power consumption; When power demand quantity is less than the threshold values of user's setting, corresponding on-load switch is closed recovers normal electricity consumption.
Described imput output circuit arranges lower limit threshold values and the upper limit threshold values of adjustable on-load switch, master controller detects user's current power requirement, when power demand quantity meets or exceeds the upper limit threshold values of user's setting, adjustable on-load switch disconnects completely, when power demand quantity is less than the lower limit threshold values of user's setting, adjustable on-load switch is completely closed recovers normal electricity consumption; When power demand quantity is between lower limit threshold values and upper limit threshold values, adjustable on-load switch regulates load export ratio.
Described imput output circuit comprises LCD screen 41 and button 42, sets the power demand quantity threshold value of multi-class workload switches set and adjustable on-load switch.Described communication interface comprises too Netcom casually 8 and RS485 communication port 9, and load control information exports by ethernet communication mouth, RS485 communication port, by the control of communication mode expansion to third party's consumer.
With reference to Fig. 3, the requirement setting logic of this demand controller is: user can set 5 requirement threshold values, wherein the threshold values of 3 corresponding three classification on-load switches of value, the upper limit, the lower proportion ratio value of the corresponding adjustable on-load switch of other 2 threshold values.When power demand quantity meets or exceeds the threshold values of user's setting, the corresponding on-load switch of main controller controls disconnects to reduce power consumption, the adjustable on-load switch of main controller controls by user set on the roll off the production line linear ratio relation of threshold values carry out regulable control to reduce power consumption; When power demand quantity is less than the threshold values of user's setting, the corresponding on-load switch of main controller controls closes, and the adjustable on-load switch of main controller controls is pressed switch upper limit amount and controlled, and recovers normal electricity consumption.
Such as user sets the threshold values that 85%, 90%, 95% 3 threshold values is three classification on-load switches, and when power demand quantity rising reaches 85% of setting value, three stage load switches disconnect; When power demand quantity rising reaches 90% of setting value, secondary on-load switch also disconnects; When electricity consumption need rise reach setting value 95% time, first order load switch disconnect.When power demand quantity drops to 90% of setting value from more than 95% of setting value, first order load switch closes; When power demand quantity drops to 85% of setting value from more than 90% of setting value, secondary on-load switch closes; When power demand quantity drops to less than 85% of setting value, three stage load switches close, and recover normal electricity consumption.
It is that the threshold values ratio of adjustable on-load switch is respectively 100%, 0% that such as user sets 85%, 95%, when power demand quantity rise to setting value 85% ~ 95% interval time, the threshold values carrying out adjustable load according to the following equation controls:
Wherein y is for regulating load export ratio, S is the upper limit threshold values of adjustable on-load switch, and D is user's current power requirement, and X is the lower limit threshold values of adjustable on-load switch, SB is the load export ratio that upper limit threshold values is corresponding, and XB is the load export ratio that lower limit threshold values is corresponding.
Such as current power requirement value rises to 88%, then the ratio that adjustable load exports is:
Such as current power requirement value rises to 90%, then the ratio that adjustable load exports is:
Such as current power requirement value rises to 94%, then the ratio that adjustable load exports is:
Can find out, along with the rising of power demand quantity, adjustable load export ratio diminishes gradually until adjustable load is closed completely.
Claims (4)
1. the controller of a configurable demand on power demand side, it is characterized in that, the Current Transmit, voltage transformer pt, multi-class workload switches set, adjustable on-load switch, imput output circuit, communication interface and the feed circuit that comprise master controller MCU and be connected with master controller MCU respectively;
The threshold value of multi-class workload switches set and adjustable on-load switch is set respectively by imput output circuit, master controller obtains user's current power requirement according to the data of Current Transmit and voltage transformer pt collection, and compare with the threshold value of multi-class workload switches set and adjustable on-load switch respectively, multi-class workload switches set and adjustable on-load switch carry out corresponding actions according to corresponding comparative result;
Described imput output circuit arranges lower limit threshold values and the upper limit threshold values of adjustable on-load switch, master controller detects user's current power requirement, when power demand quantity meets or exceeds the upper limit threshold values of user's setting, adjustable on-load switch disconnects completely, when power demand quantity is less than the lower limit threshold values of user's setting, adjustable on-load switch is completely closed recovers normal electricity consumption; When power demand quantity is between lower limit threshold values and upper limit threshold values, adjustable on-load switch regulates load export ratio;
Described adjustment load export ratio is specifically calculated as follows:
Wherein y is for regulating load export ratio, S is the upper limit threshold values of adjustable on-load switch, and D is user's current power requirement, and X is the lower limit threshold values of adjustable on-load switch, SB is the load export ratio that upper limit threshold values is corresponding, and XB is the load export ratio that lower limit threshold values is corresponding.
2. the controller of a kind of configurable demand on power demand side according to claim 1, it is characterized in that, described multi-class workload switches set comprises first order load switch, secondary on-load switch and three stage load switches, described imput output circuit arranges the threshold values of first order load switch, secondary on-load switch and three stage load switch motions, master controller detects user's current power requirement, when power demand quantity meets or exceeds the threshold values of user's setting, corresponding on-load switch disconnects to reduce power consumption; When power demand quantity is less than the threshold values of user's setting, corresponding on-load switch is closed recovers normal electricity consumption.
3. the controller of a kind of configurable demand on power demand side according to claim 1, is characterized in that, described imput output circuit comprises LCD screen and button, sets the power demand quantity threshold value of multi-class workload switches set and adjustable on-load switch.
4. the controller of a kind of configurable demand on power demand side according to claim 1, is characterized in that, described communication interface comprise too Netcom casually with RS485 communication port.
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| CN108776436A (en) * | 2018-06-05 | 2018-11-09 | 南京邮电大学 | Energy management method and system are recognized towards wisdom family |
| CN110011360B (en) * | 2019-03-20 | 2022-03-22 | 新奥（中国）燃气投资有限公司 | Method and system for adjusting output load of generator set |
| CN110531680B (en) * | 2019-09-17 | 2021-04-06 | 国网四川省电力公司资阳供电公司 | Intelligent power monitoring deviation power supply system and control method |
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| KR101376769B1 (en) * | 2007-10-24 | 2014-04-01 | 엘지전자 주식회사 | Demand Controller of an electric system |
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| KR101376769B1 (en) * | 2007-10-24 | 2014-04-01 | 엘지전자 주식회사 | Demand Controller of an electric system |
| CN101505070A (en) * | 2008-02-05 | 2009-08-12 | Ls产电株式会社 | Electronic smart meter enabling demand response and method for demand response |
| WO2009152534A2 (en) * | 2008-02-15 | 2009-12-17 | Stefan Swanepoel | Electrical demand controller |
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