CN101662244B - Power consumption control method and device - Google Patents
Power consumption control method and device Download PDFInfo
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- CN101662244B CN101662244B CN2009101904267A CN200910190426A CN101662244B CN 101662244 B CN101662244 B CN 101662244B CN 2009101904267 A CN2009101904267 A CN 2009101904267A CN 200910190426 A CN200910190426 A CN 200910190426A CN 101662244 B CN101662244 B CN 101662244B
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Abstract
The embodiment of the invention discloses a power consumption control method and equipment, wherein the power consumption control method mainly comprises the following steps: acquiring an expected weather condition of a current location; determining the expected power generation amount of the energy conversion device according to the configuration information of the energy conversion device and the obtained expected weather condition; and controlling the power consumption of the load according to the current electric quantity of the storage battery and the expected electric energy generation quantity. According to the power consumption control method and the power consumption control equipment, the load power consumption is controlled according to the predicted power generation amount, so that the influence of weather on energy utilization can be weakened, the effective working time of the load is prolonged, the power failure probability of the load is reduced, and the cost is saved.
Description
Technical field
The present invention relates to the Application of Solar Energy technology, relate in particular to a kind of control method and equipment of power consumption.
Background technology
Along with people's is to the further investigation of the energy and environment; Energy-saving and emission-reduction day by day are rooted in the hearts of the people; The application of various new forms of energy is penetrated into each corner of people's life gradually, and wherein the application of solar energy is comparatively extensive, but the application of solar energy receives weather effect bigger; Concerning the load that requires continual and steady energy resource supply, increased destabilizing factor.
Existing Application of Solar Energy technology, adopt like drag mostly:
Pattern one: series system is adopted in solar panels, storage battery and load, and solar panels charge a battery through controller for solar, then through the storage battery powering load, and the not direct powering load of solar panels.
Pattern two: parallel way is adopted in solar panels, storage battery and load; When solar energy input power during greater than load consumption power; Solar panels also charge a battery through the direct powering load of controller for solar simultaneously, and this moment, storage battery was in charged state; When solar energy input power during less than load consumption power, solar panels and storage battery be powering load simultaneously, and this moment, storage battery was in discharge condition.
More than two kinds of patterns all be to be solar energy converting electric energy (directly powering load, the back that perhaps charges a battery is electric), for the load that requires continual and steady power supply; Because receive the influence of weather, solar energy can't be accomplished continual and steady input, thereby in some cases; Load outage possibly occur and quit work; In addition, these are used and lack the necessary control means, do not accomplish solar energy is fully effectively utilized.In addition, also there is same problem in the existing application scheme for other energy (for example oceanic energy, geothermal energy, water ability and biological energy source etc.).
Summary of the invention
Power consumption control method that the embodiment of the invention provides and equipment are used to improve energy utilization rate.
On the one hand, the embodiment of the invention provides a kind of power consumption control method, mainly comprises:
Obtain the expection weather condition in the present on-site predetermined amount of time;
Confirm the expection energy output of this energy reforming unit according to the configuration information of energy reforming unit and the expection weather condition of obtaining;
Current electric quantity and said expection energy output according to storage battery carry out power consumption control to load.
On the other hand, the embodiment of the invention provides a kind of consumed power control device, mainly comprises:
First acquiring unit is used to obtain the expection weather condition in the present on-site predetermined amount of time;
Confirm the unit, be used for the expection energy output that expection weather condition that configuration information and said first acquiring unit according to energy reforming unit obtain is confirmed said energy reforming unit;
Control unit, the expection energy output of the energy reforming unit that is used for confirming according to the current electric quantity of storage battery and said definite unit carries out power consumption control to load.
The method and apparatus that the embodiment of the invention provides; Through the energy output control load power consumption according to prediction, thereby the weather that can weaken prolongs the load effective time to the influence of using energy source; Reduce load outage probability; Save cost, and reduce the out-of-work probability of energy reforming unit to occur, improve energy utilization rate because of storage battery is full of.
Description of drawings
Fig. 1 is the power consumption control method schematic flow sheet of one embodiment of the invention;
Fig. 2 is the power consumption control method schematic flow sheet of another embodiment of the present invention;
Fig. 3 is the consumed power control device structural representation of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of power consumption control method, and is as shown in Figure 1, can comprise following content.
S101, obtain present local prospective weather condition.
In this step, according to different energy reforming units, the expection weather condition that need obtain also can be different.For example, if energy reforming unit is a wind electricity generating system, the expection weather condition of obtaining can be in the predetermined amount of time (such as, this predetermined amount of time can also can be some hrs or the like for some days) wind conditions; If energy reforming unit is a device of solar generating, the weather condition that then need obtain can be the situation at sunshine in the predetermined amount of time.
In addition; Obtain present local prospective weather condition and also multiple mode can be arranged; With the device of solar generating is example: can obtain the location following some days from the meteorological department information such as intensity of sunshine, hours of daylight of (for example 3 days or 5 days etc. are not done qualification here); Perhaps; Can carry out statistical analysis to the weather history rule; Such as: to the weather of present location in the past some day (for example 20 days, do not do qualification here) and sunshine situation carry out statistical analysis, obtain the intensity of sunshine and/or the hours of daylight of the weather of dissimilar (fine, cloudy, wet weather etc.); The weather history rule that can statistical analysis be obtained combines following some days weather pattern information obtained from meteorological department, the intensity of sunshine and/or the hours of daylight in some days future of prediction.
Need to prove that the unit of the above-mentioned intensity of sunshine of mentioning can be kw/m
2, generally speaking, calculate for ease, analyze, intensity of sunshine can adopt standard figures or normalization numerical value, the hours of daylight of every day then be according to this standard intensity of sunshine or normalization intensity of sunshine equivalent duration at sunshine.Wherein, normalized intensity of sunshine can be 1kw/m
2
For example, can count the somewhere weather pattern with the equivalence hours of daylight corresponding relation following:
| Typical case's weather pattern | Hours of daylight every day (h) | Representative value (h) |
| Fine | 5.5～6.5 | 6 |
| Fine with occasional clouds | 4.5～5.5 | 5 |
| Overcast and rainy | 3～4.5 | 3.5 |
What be worth explanation is, more than only be that example is illustrated with the device of solar generating, but it is understandable that, for the energy reforming unit of other types, also can adopt similar thinking to obtain the expection weather condition, do not give an example one by one here.
S102 confirms the expection energy output of this energy reforming unit according to the configuration information of energy reforming unit and the expection weather condition of obtaining.
The expection energy output of energy reforming unit except with the expection weather condition mutually outside the Pass, also relevant with the configuration information of this energy reforming unit.Configuration information wherein, such as can comprising specification, quantity, energy conversion efficiency or the like, certainly, and dissimilar energy reforming units, its configuration information maybe be different.
To be that example is elaborated below with the device of solar generating.
Such as, the expection energy output in the predetermined amount of time of device of solar generating can be confirmed according to following method:
Quantity * controller for solar the conversion efficiency of the power requirements * solar panels of hours of daylight summation * solar panels in expection energy output=intensity of sunshine * predetermined amount of time;
Wherein, the solar panels power requirements can be meant the generated output of every solar panels under standard intensity of sunshine or normalization intensity of sunshine.。
For example; Suppose that predetermined amount of time is following 5 days; The hours of daylight in 5 days this futures be respectively A, B, C, D, E (the hours of daylight here for according to the standard intensity of sunshine equivalent duration at sunshine), then expect the quantity * controller for solar conversion efficiency of power requirements * solar panels of energy output=(A+B+C+D+E) * solar panels.Again for example; For power requirements is the solar panels of 165W; Configuration M piece solar panels; Adopt the switching type controller for solar, consider that the conversion efficiency under the factors such as the blocking of solar panels, storage battery energy efficient, maximum power point skew and line loss is 71%, then following 5 days expection energy output N (t) account form is following:
N(t)＝(A+B+C+D+E)*165*M*71％(W)
Described in S101, the above hours of daylight can be directly to obtain according to the forecast information of meteorological department, also can be the weather pattern according to meteorological department's prediction, in conjunction with what the analysis of historical data was obtained indirectly.
In addition,, also can adopt similar method to confirm the expection energy output, for example, can calculate following some days expection energy output according to the quantity and the transformation efficiency of wind-force intensity, time and wind energy plate for other energy reforming units such as wind power generations.
Optional; The weather condition of considering the forecast of meteorological department maybe be not exclusively accurately; If directly adopt the forecast information prediction energy output of meteorological department may have certain deviation; Therefore can use the accurate probability of expection weather condition to carry out weighting, the accurate probability of this expection weather condition can be provided by meteorological department.
With the device of solar generating is example: following 5 days hours of daylight of supposition be respectively A, B, C, D, E (the hours of daylight here for according to the standard intensity of sunshine equivalent duration at sunshine); The accurate probability of the weather forecast of every day is respectively a, b, c, d, e, then expects energy output=(quantity * controller for solar conversion efficiency of A * a+B * b+C * c+D * d+E * e) * solar panels power requirements * solar panels.Can find out, carry out weighting through the accurate probability that uses the expection weather condition and can carry out relatively accurate prediction that minimizing prediction deviation occurs and causes the power consumption distribution situation that load outage service probability is increased than large deviation to occur greatly to the expection energy output.
S103 carries out power consumption control according to the current electric quantity of storage battery and the expection energy output of the energy reforming unit of confirming to load.
In this step, can there be multiple mode that power consumption control is carried out in load.
In this step; Can with the current electric quantity of storage battery and preset thresholding (such as: first thresholding) compare, if the current electric quantity of storage battery explains then that more than or equal to this first preset thresholding the current electric quantity of storage battery is higher; Otherwise, explain that the current electric quantity of storage battery is lower; Perhaps, can accumulator electric-quantity be carried out grade classification according to different electric weight situation, for example high; In, low Three Estate, if the current electric quantity of storage battery correspond in or high; Can think that the current electric quantity of storage battery is higher, otherwise, think that the current electric quantity of storage battery is lower.For current electric quantity situation how to judge storage battery, other multiple modes can also be arranged, do not give an example one by one in the embodiment of the invention.
Similarly; The mode of the situation of expection energy output also can adopt similar thinking: can expection energy output and preset thresholding (second thresholding) be compared; If the expection energy output is more than or equal to second thresholding; Can think that the expection energy output is good, otherwise, can think that the expection energy output is relatively poor; Perhaps, can the expection energy output be carried out grade classification, for example high, in, low Three Estate if expection energy output corresponding grades is high, can think that the expection energy output is good, otherwise, think that the expection energy output is relatively poor.
If the current electric quantity of storage battery is higher, the expection energy output is good, then can makes the higher level of power consumption of load applications, thereby can make full use of the energy.If the current electric quantity of storage battery is low or expect that energy output is relatively poor, then can make the lower power grade of load applications, thereby can prolong the effective time of load, reduce load because of the out-of-work probability of outage.Need explain to such an extent that be, more than first thresholding and second thresholding can set according to actual needs; The level of power consumption of load also can be divided according to actual conditions, for example, power consumption is divided into the first estate, second grade or the like, and the high more expression power consumption of grade is big more, and perhaps the low more expression power consumption of grade is big more, and present embodiment is not done qualification.
In addition, also can obtain the following spendable average power P of predetermined amount of time T internal burden (t) with the expection energy output according to the current electric quantity of storage battery.Such as, this average power can be expressed as: P (t)=(R (t)+N (t))/T, and wherein, R (t) is the current electric quantity of storage battery, and N (t) is the expection energy output, and T is predetermined period of energy output.
Further; If load is the base station,, when calculating P (t), can introduce client's wish factor κ because the client is different with the duration requirement for covering quality; Take corresponding power consumption control strategy according to client's wish, can confirm average power through following mode:
P(t)＝κ*(R(t)+N(t))/T，
When κ＜1, the expression duration is preferential, and when κ=1, expression quality and duration balance when κ＞1, represent that quality is preferential, and concrete condition can be selected according to client's wish.
After determining P (t), can go matched load different power consumption grade according to P (t), P (t) is high more, and the adaptable level of power consumption of load is just high more.For the base station, promptly select the corresponding transmission power grade, as P (t) during, can take the minimum emissive power grade less than base station minimum emissive power grade.
For other energy reforming units such as wind power generations, the scheme that power consumption control is carried out in its load also similarly is not described in detail here.
Need to prove between storage battery, energy reforming unit and the load multiple connecting mode to be arranged, for example: energy reforming unit, storage battery and load parallel connection or energy reforming unit, storage battery and load series connection etc.Power consumption control scheme in the embodiment of the invention is applicable to different connecting modes.
The method of the embodiment of the invention, through predicting energy output according to the expection weather condition, thereby according to energy output and the current electric quantity control load power consumption of storage battery of prediction; Thereby can weaken the influence of weather to using energy source; Prolong the load effective time, reduce load outage probability, save cost; And reduce the out-of-work probability of energy reforming unit to occur because of storage battery is full of, improve energy utilization rate.
Further, in order more accurately the expection energy output to be predicted that another embodiment of the present invention also provides a kind of power consumption control method, and is as shown in Figure 2.
S201, obtain present local prospective weather condition.
In this step, obtain present local prospective weather condition and can repeat no more here with reference to the associated description among the S101 embodiment illustrated in fig. 1.
S202, confirm the expection energy output of this energy reforming unit according to the configuration information of energy reforming unit and the expection weather condition obtained;
In this step, confirm that the mode of the expection energy output of energy reforming unit can repeat no more with reference to the associated description among the S102 embodiment illustrated in fig. 1 here.
S203, the expection energy output of confirming is revised;
Generally speaking, possibly there is certain deviation between expection energy output and the actual power amount, more accurate in order to make to the prediction of energy output, can revise the expection energy output of confirming.The mode of revising can have multiple; For example; Can through in the past period (such as, can be 50 days etc.) energy output and the deviation between the actual energy output of expection carry out statistical analysis, such as difference between the energy output of the expection of record every day and the actual energy output; And the difference that all obtain averaged; With the correction value of this average as the expection energy output, deduct this correction value on the basis of the expection energy output of in S202, determining, obtain revised expection energy output.
S204, power consumption control is carried out in load according to the current electric quantity and the revised expection energy output of storage battery.
In this step, the mode of load being carried out power consumption control can be with reference to the description in embodiment illustrated in fig. 1, and different is that what present embodiment used is revised expection energy output.
Through the method in the present embodiment, can be so that more accurate to the prediction of energy output, thus can tally with the actual situation more to the power consumption control of load.
The embodiment of the invention provides a kind of consumed power control device, and is as shown in Figure 3, and this equipment mainly comprises:
First acquiring unit 301 is used to obtain the expection weather condition in the present on-site predetermined amount of time;
Wherein, First acquiring unit 301 obtains present local prospective weather condition can have multiple mode; With the device of solar generating is example: can obtain the location following some days from the meteorological department information such as intensity of sunshine, hours of daylight of (for example 3 days or 5 days etc. are not done qualification here); Perhaps; Can carry out statistical analysis to the weather history rule; Promptly to the weather of location in the past some day (for example 20 days, do not do qualification here) and sunshine situation carry out statistical analysis, obtain the intensity of sunshine and/or the hours of daylight of the weather of dissimilar (fine, cloudy, wet weather etc.); The weather history rule that can statistical analysis be obtained combines following some days weather pattern information obtained from meteorological department, the intensity of sunshine and the hours of daylight in some days future of prediction.
Confirm that unit 302 confirms the associated description that the mode of expection energy output can reference method embodiment.
Further; For the expection energy output is carried out relatively accurate prediction; This equipment can also comprise second acquisition unit 304: be used to obtain the accurate probability of expection weather condition, confirm that then accurate probability that unit 302 is used for the expection weather condition that expection weather condition that the configuration information and first acquiring unit 301 according to energy reforming unit obtain and second acquisition unit 304 obtain confirms the expection energy output of this energy reforming unit.The associated description of concrete mode in can reference method embodiment repeats no more here.
In addition,, can revise, confirm that then unit 302 can comprise the expection energy output in order more accurately the expection energy output to be predicted:
Determination module is used for the expection energy output that expection weather condition that the configuration information and first acquiring unit 301 according to energy reforming unit obtain is confirmed this energy reforming unit;
Correcting module is used for the expection energy output that determination module is confirmed is revised, and obtains revised expection energy output, and control unit 303 carries out power consumption control according to this revised expection energy output.
Wherein, The mode of revising can have multiple; For example, can through in the past period (such as, can be 50 days) energy output and the deviation between the actual energy output of expection carry out statistical analysis: the difference between the energy output of the expection of record every day and the actual energy output; And the difference that all obtain averaged; With the correction value of this average as the expection energy output, on the basis of the expection energy output that determination module is determined, deduct this correction value, obtain revised expection energy output.
The mode of the 303 pairs of load power consumption of control unit control, such as can for: if the current electric quantity of storage battery is higher good with the expection energy output, can makes the higher level of power consumption of load applications, thereby can make full use of the energy; If the current electric quantity of storage battery is low or expect that energy output is relatively poor, can be so that the lower power grade of load applications, thus can prolong the effective time of load, reduce load because of the out-of-work probability of outage.
In addition; Control unit 303 can comprise average power acquisition module and control module; This average power acquisition module is confirmed according to the current electric quantity R (t) of storage battery and definite unit 302 that expection energy output N (t) obtain and is loaded on average power P available in the predetermined amount of time (t); Account form for P (t) can repeat no more with reference to the associated description of previous methods embodiment here; Then the level of power consumption of the average power matched load that obtains according to the average power acquisition module of control module is used for load power consumption control.Specifically can be with reference to the associated description of previous methods embodiment.
Consumed power control device in the embodiment of the invention; Through the energy output control load power consumption according to prediction, thereby the weather that can weaken prolongs the load effective time to the influence of using energy source; Reduce load outage probability; Save cost, and reduce the out-of-work probability of energy reforming unit to occur, improve energy utilization rate because of storage battery is full of.
Need to prove; The power consumption control method of the embodiment of the invention and equipment; Can be applied to plurality of application scenes; For example, the equipment (solar energy base station, wind energy base station, the electric complementary base station of scene etc.) based on solar energy, wind energy, oceanic energy, geothermal energy, water ability and prediction of biological energy source equal energy source and control can use similar application process.
The process that one of ordinary skill in the art will appreciate that the mode of operation in realization the foregoing description can be accomplished through the relevant hardware of program command; Described program can be stored in the read/write memory medium, and this program when carrying out the corresponding step in the said method.Described storage medium can be like ROM/RAM, magnetic disc, CD etc.
In several embodiment that the application provided, should be understood that, the equipment that is disclosed, apparatus and method not surpassing in the application's the spirit and scope, can realize through other mode.Current embodiment is a kind of exemplary example, should be as restriction, and given particular content should in no way limit the application's purpose.For example, a plurality of unit or assembly can combine or can be integrated into another equipment, or some characteristics can ignore, or do not carry out.
In addition, the sketch map of institute's description equipment and method and different embodiment, in the scope that does not exceed the application, can with miscellaneous equipment, module, technology or method combine or are integrated.Another point, the coupling each other that shows or discuss or directly coupling or communication to connect can be through some interfaces, the INDIRECT COUPLING of device or unit or communication connect, and can be electrically, machinery or other form.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a power consumption control method is characterized in that, this method comprises:
Obtain the accurate probability of interior expection weather condition of present on-site predetermined amount of time and expection weather condition;
Confirm the expection energy output of this energy reforming unit according to the accurate probability of the configuration information of energy reforming unit, the said expection weather condition of obtaining and said expection weather condition;
Current electric quantity and said definite expection energy output according to storage battery carry out power consumption control to load.
2. power consumption control method according to claim 1; It is characterized in that; Said energy reforming unit is a device of solar generating; The configuration information of said device of solar generating comprises the power requirements of solar panels, the quantity and the solar panels control device conversion efficiency of solar panels, and then said configuration information according to energy reforming unit confirms that with the expection weather condition of obtaining the expection energy output of this energy reforming unit comprises:
Quantity * controller for solar the conversion efficiency of the power requirements * solar panels of hours of daylight summation * solar panels in expection energy output=intensity of sunshine * said predetermined amount of time.
3. power consumption control method according to claim 1; It is characterized in that; Said method also comprises: according to the expection energy output in account of the history analysis past and the difference of actual power amount; Said definite expection energy output is revised, with revised expection energy output as said definite expection energy output.
4. according to each described power consumption control method of claim 1-3, it is characterized in that said current electric quantity and said expection energy output according to storage battery carries out power consumption control to load and comprise:
If the current electric quantity of said storage battery is more than or equal to first thresholding, and said expection energy output then makes said load applications first level of power consumption more than or equal to second thresholding;
If the current electric quantity of said storage battery less than said second thresholding, then makes said load applications second level of power consumption less than said first thresholding or said expection energy output;
The power consumption of wherein said second level of power consumption is lower than the power consumption of first level of power consumption.
5. according to each described power consumption control method of claim 1-3, it is characterized in that said current electric quantity and said expection energy output according to storage battery carries out power consumption control to load and comprise:
Confirm the spendable average power of said load according to the current electric quantity of said storage battery, said definite expection energy output and said predetermined amount of time, mate the level of power consumption of said load according to said average power.
6. method according to claim 5 is characterized in that, said current electric quantity according to said storage battery, said definite expection energy output and said predetermined amount of time confirm that the spendable average power of said load comprises:
Obtain said storage battery current electric quantity and said definite expection energy output with;
With the current electric quantity of said storage battery and said definite expection energy output and divided by said predetermined amount of time, the merchant who obtains is the spendable average power of said load.
7. a consumed power control device is characterized in that, said equipment comprises:
First acquiring unit is used to obtain the expection weather condition in the present on-site predetermined amount of time;
Second acquisition unit is used to obtain the accurate probability of expection weather condition;
Confirm the unit, the accurate probability that is used for the expection weather condition that expection weather condition that configuration information and said first acquiring unit according to energy reforming unit obtain and said second acquisition unit obtain is confirmed the expection energy output of said energy reforming unit;
Control unit, the expection energy output of the energy reforming unit that is used for confirming according to the current electric quantity of storage battery and said definite unit carries out power consumption control to load.
8. consumed power control device according to claim 7 is characterized in that, said control unit specifically is used for:
If the current electric quantity of said storage battery is more than or equal to first thresholding, and said expection energy output then makes said load applications first level of power consumption more than or equal to second thresholding;
If the current electric quantity of said storage battery less than said second thresholding, then makes said load applications second level of power consumption less than said first thresholding or said expection energy output;
The power consumption of wherein said second level of power consumption is lower than the power consumption of first level of power consumption.
9. consumed power control device according to claim 7 is characterized in that, said definite unit comprises:
Determination module is used for the expection energy output that expection weather condition that configuration information and said first acquiring unit according to said energy reforming unit obtain is confirmed this energy reforming unit;
Correcting module is used for the expection energy output that said determination module is confirmed is revised, and obtains revised expection energy output, and said control unit utilizes revised expection energy output to carry out power consumption control.
10. according to claim 7 or 9 described consumed power control devices, it is characterized in that said control unit comprises:
The average power acquisition module, the expection energy output that is used for confirming in the current electric quantity according to said storage battery, said predetermined amount of time and said definite unit is confirmed the spendable average power of said load;
Control module, the level of power consumption of the average power matched load that is used for obtaining according to said average power and said acquisition module is carried out power consumption control to said load.
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| CN101232245A (en) * | 2007-01-26 | 2008-07-30 | 富士通株式会社 | Power supply units and communication equipment |
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| CN101232245A (en) * | 2007-01-26 | 2008-07-30 | 富士通株式会社 | Power supply units and communication equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798932A (en) * | 2019-11-28 | 2020-02-14 | 广东洲明节能科技有限公司 | Street lamp control method, electronic device and computer-readable storage medium |
| CN110798932B (en) * | 2019-11-28 | 2022-02-08 | 广东洲明节能科技有限公司 | Street lamp control method, electronic device and computer-readable storage medium |
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