CN103558453A - System for collecting maximum demand of multi-power-source power supply direct power purchase customers - Google Patents
System for collecting maximum demand of multi-power-source power supply direct power purchase customers Download PDFInfo
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- CN103558453A CN103558453A CN201310497297.2A CN201310497297A CN103558453A CN 103558453 A CN103558453 A CN 103558453A CN 201310497297 A CN201310497297 A CN 201310497297A CN 103558453 A CN103558453 A CN 103558453A
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Abstract
The invention discloses a system for collecting the maximum demand of multi-power-source power supply direct power purchase customers. The system comprises a metering device, a station collecting device and a main station system. The precision of electric meters of the metering device is 0.2S. The electric meters can store electrical degree load curve in at least one month according to the density of one minute and can provide data outwards through an RS485 channel, and the electric meters are installed at metering points between larger users and a power grid. The system for collecting the maximum demand of the multi-power-source power supply direct power purchase customers is high in operability, easy to operate and maintain and good in reliability.
Description
Technical field
The present invention relates to a kind of maximum demand acquisition system, particularly the straight power purchase client's maximum demand of a kind of multiple feed acquisition system.
Background technology
More existing collection or monitoring system about loop power supply client maximum demand, its embodiment is all by the electric energy meter active power (or requirement) of electric energy metering automation system Real-time Collection multiloop supply line, calculates in real time the maximum active demand of electricity consumption client.This scheme is the active power (or requirement) that directly gathers electric energy meter per minute, adopts system synthesis to calculate maximum demand.But there is following shortcoming in acquisition system of the prior art: 1) data from ammeter, but the time that data occur come from by acquisition terminal, because gatherer process itself needs the time, so the time that the markers of electric quantity data necessarily occurs than reality is Zao.
2) data are stored in acquisition terminal, and acquisition terminal may produce data acquisition failure, interruption, loss etc. in gatherer process cannot obtain real historical data, and integrality, the reliability of data can not be guaranteed;
3) electric energy meter decimal place is not required, will greatly reduce the fineness of image data, cause system-computed error to increase, accuracy can not be guaranteed.Cause requirement to calculate error change very big and uncontrollable.
4) do not adopt rack, modular construction, all functions module cannot charged plug, operation maintenance difficulty, poor reliability.
5) do not adopt dual-power module, dual network passage, the job stability of data acquisition equipment and poor stability.
6) little, the history data store ability of collecting device memory capacity.
7) when the data that gather exist loss situation, taked estimation mode, existed data are modified and recruitment behavior, data are illegal, do not have statutory force.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and a set of power consumption data and curves that can meet true electricity consumption situation is provided, with guarantee whole Output rusults maximum demand authentic and valid, can the straight power purchase client's maximum demand of multiple feed acquisition system complete standard compliant requirement computational rules, that can effectively support charge calculation.
The straight power purchase client's maximum demand of a kind of multiple feed acquisition system, include measuring apparatus, station harvester, main station system, the precision of the ammeter of described measuring apparatus be 0.2S level other, according to the density of one minute, can preserve the electric degree load curve of at least 1 month, and can outwards provide with the passage of RS485 the electric energy meter of data, described electric energy meter is arranged on the stoichiometric point between large user and electrical network
Described station harvester includes maximum demand collector, RS485 directly connects or RS485-fiber-optic signal conversion equipment and the network switch and optical fiber-link switch equipment, described S485 directly connects or RS485-fiber-optic signal conversion equipment connects respectively measuring apparatus and maximum demand collector, the network switch and optical fiber-link switch equipment connect respectively maximum demand collector and main station system, described maximum demand collector is according to the parameter setting, each fixed time just gathers the electric degree load curve data of measuring apparatus part, after each image data completes, from ammeter, read in the current time of ammeter, then judge whether the difference between ammeter event and collector surpasses the limit value of setting parameter, if surpassed, while just ammeter being carried out to school, the time of collector depend on main station system to time module, described maximum demand collector can store long ammeter load curve data,
Described main station system include data acquisition module, to time module, data query module and report output module, described data acquisition module is for gathering the electric energy meter data that are stored in collector the inside, described to time module include from gps satellite clock module acquisition time, adjust the clock of main station system itself, and according to operator's setting, two kinds of modes of clock of timing adjustment collector
Described data query module, can carry out the inquiry of ammeter data, and by data display to user,
Described report output module adopts the method for algebraically stack when the load computing of carrying out the straight power purchase client of multiple feed, be specially each had physics ammeter, be used as the parts of independent metering one by one, and these Data Integrations together, meritorious being just designated as of the forward of all electric energy meters is designated as to the negative algebraic sum computing of carrying out with reverse active energy, described report output module is calculated according to the method for slippage requirement when carrying out the straight power purchase client's of multiple feed maximum demand, be specially, often after one minute, just the electric flux of first 15 minutes is added up, and the time occurring divided by electric weight, calculate the straight power purchase client's of current time multiple feed requirement, computing formula is as follows:
Current requirement=((∑ Pn-∑ P ' n)-(∑ Rn+ ∑ R ' n))/δ t
Wherein:
Pn represents the primary side forward active energy indicating value of measurement point n current time, is generally designated as positive number
P ' n represent measurement point n at δ t the primary side forward active energy indicating value before constantly, be generally designated as positive number
Rn represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
R ' n represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
N is stoichiometric point or ammeter sequence number,
δ t represents that requirement catches the cycle, in Fujian, according to 15 minutes, calculates
Like this, according to the time interval, be the electric quantity curve numerical value of 1 minute, just can generate 1440 every day, produces 30(31 every month) * 1440=43200(44640) individual requirement value, therefrom choose the straight power purchase client's maximum demand of of that month multiple feed and time of origin, as the foundation of charge calculation.
The straight power purchase client's maximum demand of multiple feed of the present invention acquisition system, owing to having adopted specific electric energy meter, every 1 minute load curve data can be stored in electric energy meter, in table, data are not lost, can gather at any time historical data, guarantee integrality, the reliability of data.Electric energy meter error curve is stable, can temporal evolution and drift about.Adopt again special-purpose maximum demand collector to carry out data acquisition, data acquisition equipment is had to strict demand, and collector memory capacity is large, history data store ability is strong.Because all data that gather be all electric energy meter internal data, data are not carried out to any Revision and supplement, only compare, analysis and data extraction.Data are electric energy meter raw data, and data are legal, have statutory force.The maximum demand production method of the multiple feed that main website realizes meets the standard of measurement instrument completely, has strict technical measures to guarantee from Method And Principle to System Implementation.
Described data acquisition includes two kinds of random acquisition and timing acquiring, random acquisition can allow operator set needs the ammeter gathering, start time and the end time of data, then to collector, send the message of request msg, from collector, obtain and store data; Timing acquiring, according to operator's setting, every the time of appointment, is just carried out data acquisition to the meter group of appointment.When carrying out timing acquiring, system is retrieves historical acquisition and recording first, if had in the past gather failed situation (, the time that is correctly completed to collection the last time is used as the start time of this image data, to keep the complete, continuous of data.
Described electric energy meter should adopt 4 radix point modes store and show.Can effectively improve maximum demand metering accuracy
Described maximum demand collector adopts rack, modular construction, and all functions module can charged plug, and operation maintenance is convenient, reliability is high
Described maximum demand collection storage adopts dual-power module, dual network passage.Guarantee job stability and the security of data acquisition equipment.
The workflow of described main station system is:
1) for gathering the situation of action for clock triggering: first collector inquires about the ammeter list that needs image data being stored in database, then according to the acquisition state and the final data of this ammeter in database last time to current ammeter inquiring, determine the collection start time point of current task, again according to current main station time, collection period is determined the collection end time point of current task, and according to ammeter information, beginning and ending time tissue and transmission message, according to the message receiving, parse the maximum demand data of ammeter and be saved in database, record the communication state of this collection simultaneously, in order to later data acquisition or event inquiry, use, last according to the definition of task itself, if defined automatically to time task, obtain current collector clock and and the standard time compare, according to the setting of the size of time difference and system, to collector carry out to time.
2) direct according to operator's setting for the acquisition tasks that operator triggers for gathering action, obtain the maximum demand data and curves of the fixed time section of specifying ammeter.
The mechanism of described its image data of maximum demand collector is clocked flip: collector circulation is obtained clock and according to the parameter of maximum demand collector inner setting, determines whether carry out at once data acquisition.When gathering maximum demand data, first collector obtains the data that correctly complete the final time point of collection in collector, and calculates the data finish time of current acquisition tasks, then the data of current ammeter is gathered and save data.The clock of the current ammeter of inspection after collection completes, if can to time and need to time error within, maximum demand collector to ammeter send to time order.
In sum, the present invention's following advantage compared to existing technology:
The straight power purchase client's maximum demand of multiple feed of the present invention acquisition system,
1) calculating for the straight power purchase client's maximum demand of multiple feed provides strict data model.
Before the present invention, for the user of single power supply, be to have strict accurate maximum demand calculating method.The present invention extracts in the situation that multiple power supplies is powered, the exact algorithm model of maximum demand.
2) provide a set of strict solution, guarantee to obtain the original of multiple power supplies power supply, accurately power load curve
Clear and definite, after the computation model of multiple feed client maximum demand, the invention provides a set of complete strict technical scheme, guarantee that this computation model can access accurately, meet the data input that metering clearing require.Be that multiple power supplies is total, meet the power consumption data and curves of true electricity consumption situation, to guarantee the authentic and valid of whole Output rusults maximum demand.
3) the requirement result of calculation producing, can effectively support the clearing of the electricity charge
Because the data of this computation model are inputted strictly from electric energy meter measurement instrument, the complete standard compliant requirement computational rules of algorithm model, so can effectively support the clearing of the electricity charge.
The straight power purchase client's maximum demand of multiple feed of the present invention acquisition system is workable, operation maintenance simple, good reliability.
Accompanying drawing explanation
Fig. 1 is the straight power purchase client's maximum demand of multiple feed of the present invention acquisition system framework map.
Fig. 2 is the process flow diagram of main station system data acquisition of the present invention.
Fig. 3 is the process flow diagram of maximum demand collector of the present invention.
Fig. 4 is the straight power purchase client's schematic diagram of the multiple feed of the embodiment of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
The straight power purchase client's maximum demand of a kind of multiple feed acquisition system, include measuring apparatus, station harvester, main station system, the precision of the ammeter of described measuring apparatus be 0.2S level other, density according to one minute, can preserve the electric degree load curve of at least 1 month, and can outwards provide with the passage of RS485 the electric energy meter of data, described electric energy meter is arranged on the stoichiometric point between large user and electrical network, what electric energy meter adopted is the ZMD electric energy meter of Landis & Gyr company, electrical energy meter accuracy is 0.2S level, the radix point of electric weight and requirement is shown as four.
Described station harvester includes maximum demand collector, RS485 directly connects or RS485-fiber-optic signal conversion equipment and the network switch and optical fiber-link switch equipment, described S485 directly connects or RS485-fiber-optic signal conversion equipment connects respectively measuring apparatus and maximum demand collector, the network switch and optical fiber-link switch equipment connect respectively maximum demand collector and main station system, described maximum demand collector is according to the parameter setting, each fixed time just gathers the electric degree load curve data of measuring apparatus part, after each image data completes, from ammeter, read in the current time of ammeter, then judge whether the difference between ammeter event and collector surpasses the limit value of setting parameter, if surpassed, while just ammeter being carried out to school, the time of collector depend on main station system to time module, described maximum demand collector can store long ammeter load curve data, maximum demand collector adopts the FFC maximum demand harvester of Charles Rangel company, this device adopts rack, modular construction, all functions module can charged plug, operation maintenance is convenient, reliability is high.And adopting dual-power module (AC/DC universal), dual network passage, guarantees job stability and the security of data acquisition equipment.In addition this maximum demand collector can store trimestral ammeter load curve data, main website at any time can obtain ammeter data from collector.As previously mentioned, the clock of collector is the clock standard as ammeter, with guarantee the clock of all electric energy meters in whole system consistent (otherwise, ammeter accurately more no matter, time has been grown, and always free error, and each ammeter error is difference to some extent certainly).The clock of guaranteeing so collector is accurate, is exactly that system is successfully crucial.
In native system, take gps satellite clock as benchmark ，Cong main website to maximum demand collector to electric energy meter step by step to time, because each image data is all can be to school time.
Native system is each hour, and main station system is from GPS acquisition time information, and during to collector school once, so it is consistent, precisely accurately to maintain the clock of whole system.
Described main station system include data acquisition module, to time module, data query module and report output module, described data acquisition module is for gathering the electric energy meter data that are stored in collector the inside, described to time module include from gps satellite clock module acquisition time, adjust the clock of main station system itself, and according to operator's setting, two kinds of modes of clock of timing adjustment collector, data acquisition module, by IEC102 stipulations, gathers the electric energy meter data that are stored in collector the inside.
Described data query module, can carry out the inquiry of ammeter data, and by data display to user,
Described report output module adopts the method for algebraically stack when the load computing of carrying out the straight power purchase client of multiple feed, be specially each had physics ammeter, be used as the parts of independent metering one by one, and these Data Integrations together, meritorious being just designated as of the forward of all electric energy meters is designated as to the negative algebraic sum computing of carrying out with reverse active energy, described report output module is calculated according to the method for slippage requirement when carrying out the straight power purchase client's of multiple feed maximum demand, be specially, often after one minute, just the electric flux of first 15 minutes is added up, and the time occurring divided by electric weight, calculate the straight power purchase client's of current time multiple feed requirement, computing formula is as follows:
Current requirement=((∑ Pn-∑ P ' n)-(∑ Rn+ ∑ R ' n))/δ t
Wherein:
Pn represents the primary side forward active energy indicating value of measurement point n current time, is generally designated as positive number
P ' n represent measurement point n at δ t the primary side forward active energy indicating value before constantly, be generally designated as positive number
Rn represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
R ' n represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
N is stoichiometric point or ammeter sequence number,
δ t represents that requirement catches the cycle, in Fujian, according to 15 minutes, calculates
Like this, according to the time interval, be the electric quantity curve numerical value of 1 minute, just can generate 1440 every day, produces 30(31 every month) * 1440=43200(44640) individual requirement value, therefrom choose the straight power purchase client's maximum demand of of that month multiple feed and time of origin, as the foundation of charge calculation.
Below to illustrate the concrete application of acquisition system of the present invention in electric system.
As shown in Figure 4, be a straight power purchase client of multiple feed, this large user also has self-supply power plant simultaneously, wherein current supply circuit 1(represents with G1, lower with) to current supply circuit 3(G3) be current supply circuit, send out a some critical point 1(and represent with F1), send out a critical point 2(F2) be the online stoichiometric point of power plant for self-supply.Because the selected ammeter of system is for measure forward and reverse active energy simultaneously, so the erect image of tri-stoichiometric points of G1/G2/G3 has number, and oppositely gain merit actual, be 0, conversely, F1/F2 oppositely has power, so and forward active power be 0. this by example in, actual the equaling of power consumption that this user is total: the meritorious sum of forward of G1, G2, G3 (is designated as: ZG1+ZG2+ZG3), the oppositely meritorious sum that deducts F1, F2 (is designated as: FF1+FF2), wherein ZG represents forward power supply, oppositely generating of FF representative.Like this this user's total electricity consumption E=(ZG1+ZG2+ZG3) as long as-(FF1+FF2) obtain the electric degree ins and outs of per minute E, just can calculate slippage requirement, and then try to achieve maximum demand and time of origin in fixed time section.Expand again a step, if we define all sensing big customers' trend is forward, big customer's trend is reverse dorsad, in fact just need not consider which point is power supply, which point is generating, directly utilize formula: E=(Z1+Z2+ ... + Zn)-(F1+F2+ ... + Fn) wherein Zn represents that the forward of stoichiometric point n is meritorious, and Fn represents oppositely gaining merit of stoichiometric point n.
Can obtain the total electricity consumption situation of user, just when E is less than 0, i.e. the time period of user's generating, electric degree curve is not the clearing foundation of time of origin as calculating maximum demand.
The workflow of described main station system is:
1) for gathering the situation of action for clock triggering: first collector inquires about the ammeter list that needs image data being stored in database, then according to the acquisition state and the final data of this ammeter in database last time to current ammeter inquiring, determine the collection start time point of current task, again according to current main station time, collection period is determined the collection end time point of current task, and according to ammeter information, beginning and ending time tissue and transmission message, according to the message receiving, parse the maximum demand data of ammeter and be saved in database, record the communication state of this collection simultaneously, in order to later data acquisition or event inquiry, use, last according to the definition of task itself, if defined automatically to time task, obtain current collector clock and and the standard time compare, according to the setting of the size of time difference and system, to collector carry out to time.
2) direct according to operator's setting for the acquisition tasks that operator triggers for gathering action, obtain the maximum demand data and curves of the fixed time section of specifying ammeter.
The mechanism of described its image data of maximum demand collector is clocked flip: collector circulation is obtained clock and according to the parameter of maximum demand collector inner setting, determines whether carry out at once data acquisition.When gathering maximum demand data, first collector obtains the data that correctly complete the final time point of collection in collector, and calculates the data finish time of current acquisition tasks, then the data of current ammeter is gathered and save data.The clock of the current ammeter of inspection after collection completes, if can to time and need to time error within, maximum demand collector to ammeter send to time order.
It is same as the prior art that the present embodiment is not stated part.
Claims (7)
1. the straight power purchase client's maximum demand of a multiple feed acquisition system, it is characterized in that: include measuring apparatus, station harvester, main station system, the precision of the ammeter of described measuring apparatus be 0.2S level other, according to the density of one minute, can preserve the electric degree load curve of at least 1 month, and can outwards provide with the passage of RS485 the electric energy meter of data, described electric energy meter is arranged on the stoichiometric point between large user and electrical network
Described station harvester includes maximum demand collector, RS485 directly connects or RS485-fiber-optic signal conversion equipment and the network switch and optical fiber-link switch equipment, described S485 directly connects or RS485-fiber-optic signal conversion equipment connects respectively measuring apparatus and maximum demand collector, the network switch and optical fiber-link switch equipment connect respectively maximum demand collector and main station system, described maximum demand collector is according to the parameter setting, each fixed time just gathers the electric degree load curve data of measuring apparatus part, after each image data completes, from ammeter, read in the current time of ammeter, then judge whether the difference between ammeter event and collector surpasses the limit value of setting parameter, if surpassed, while just ammeter being carried out to school, the time of collector depend on main station system to time module, described maximum demand collector can store long ammeter load curve data,
Described main station system include data acquisition module, to time module, data query module and report output module, described data acquisition module is for gathering the electric energy meter data that are stored in collector the inside, described to time module include from gps satellite clock module acquisition time, adjust the clock of main station system itself, and according to operator's setting, two kinds of modes of clock of timing adjustment collector
Described data query module, can carry out the inquiry of ammeter data, and by data display to user,
Described report output module adopts the method for algebraically stack when the load computing of carrying out the straight power purchase client of multiple feed, be specially each had physics ammeter, be used as the parts of independent metering one by one, and these Data Integrations together, meritorious being just designated as of the forward of all electric energy meters is designated as to the negative algebraic sum computing of carrying out with reverse active energy, described report output module is calculated according to the method for slippage requirement when carrying out the straight power purchase client's of multiple feed maximum demand, be specially, often after one minute, just the electric flux of first 15 minutes is added up, and the time occurring divided by electric weight, calculate the straight power purchase client's of current time multiple feed requirement, computing formula is as follows:
Current requirement=((∑ Pn-∑ P ' n)-(∑ Rn+ ∑ R ' n))/δ t
Wherein:
Pn represents the primary side forward active energy indicating value of measurement point n current time, is generally designated as positive number
P ' n represent measurement point n at δ t the primary side forward active energy indicating value before constantly, be generally designated as positive number
Rn represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
R ' n represents the reverse active energy indicating value of the primary side of measurement point n current time, is generally designated as negative
N is stoichiometric point or ammeter sequence number,
δ t represents that requirement catches the cycle, in Fujian, according to 15 minutes, calculates
Like this, according to the time interval, be the electric quantity curve numerical value of 1 minute, just can generate 1440 every day, produces 30(31 every month) * 1440=43200(44640) individual requirement value, therefrom choose the straight power purchase client's maximum demand of of that month multiple feed and time of origin, as the foundation of charge calculation.
2. the straight power purchase client's maximum demand of multiple feed according to claim 1 acquisition system, it is characterized in that: described data acquisition includes two kinds of random acquisition and timing acquiring, random acquisition can allow operator set needs the ammeter gathering, start time and the end time of data, then to collector, send the message of request msg, from collector, obtain and store data; Timing acquiring, according to operator's setting, every the time of appointment, is just carried out data acquisition to the meter group of appointment.When carrying out timing acquiring, system is retrieves historical acquisition and recording first, if there was in the past the failed situation that gathers, the time that last time is correctly completed to collection is used as the start time of this image data, to keep the complete, continuous of data.
3. the straight power purchase client's maximum demand of multiple feed according to claim 2 acquisition system, is characterized in that: described electric energy meter should adopt 4 radix point modes store and show.
4. the straight power purchase client's maximum demand of multiple feed according to claim 3 acquisition system, is characterized in that: the maximum demand collector of stating adopts rack, modular construction.
5. the straight power purchase client's maximum demand of multiple feed according to claim 4 acquisition system, is characterized in that: described maximum demand collection storage adopts dual-power module, dual network passage.
6. the straight power purchase client's maximum demand of multiple feed according to claim 1 acquisition system, is characterized in that: the workflow of described main station system is:
(1) for gathering the situation of action for clock triggering: first collector inquires about the ammeter list that needs image data being stored in database, then according to the acquisition state and the final data of this ammeter in database last time to current ammeter inquiring, determine the collection start time point of current task, again according to current main station time, collection period is determined the collection end time point of current task, and according to ammeter information, beginning and ending time tissue and transmission message, according to the message receiving, parse the maximum demand data of ammeter and be saved in database, record the communication state of this collection simultaneously, in order to later data acquisition or event inquiry, use, last according to the definition of task itself, if defined automatically to time task, obtain current collector clock and and the standard time compare, according to the setting of the size of time difference and system, to collector carry out to time.
(2) direct according to operator's setting for the acquisition tasks that operator triggers for gathering action, obtain the maximum demand data and curves of the fixed time section of specifying ammeter.
7. the straight power purchase client's maximum demand of multiple feed according to claim 1 collector, it is characterized in that: the mechanism of described its image data of maximum demand collector is clocked flip: collector circulation is obtained clock and according to the parameter of maximum demand collector inner setting, determines whether carry out at once data acquisition.When gathering maximum demand data, first collector obtains the data that correctly complete the final time point of collection in collector, and calculates the data finish time of current acquisition tasks, then the data of current ammeter is gathered and save data.The clock of the current ammeter of inspection after collection completes, if can to time and need to time error within, maximum demand collector to ammeter send to time order.
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| CN112362938A (en) * | 2020-12-04 | 2021-02-12 | 国网青海省电力公司 | Multi-loop or power supply electricity consumption customer maximum demand meter device |
| CN112362938B (en) * | 2020-12-04 | 2023-11-07 | 国网青海省电力公司 | Multi-loop or power supply electricity customer maximum demand meter device |
| CN113825039A (en) * | 2021-08-24 | 2021-12-21 | 青岛鼎信通讯股份有限公司 | Multi-loop power supply demand superposition method based on electric energy acquisition terminal of transformer substation |
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