CN103558453B - Multiple feed straight power purchase client's maximum demand acquisition system - Google Patents
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Abstract
The invention discloses a kind of multiple feed straight power purchase client's maximum demand acquisition system, include metering device, station harvester, main station system, the precision of the ammeter of described metering device be 0.2S rank, according to the density of one minute, the electric degree load curve of at least 1 month can be preserved, and the electric energy meter of data can be provided out with the passage of RS485, described electric energy meter is arranged on the stoichiometric point between large user and electrical network, and multiple feed of the present invention straight power purchase client's maximum demand acquisition system is workable, operation maintenance simple, good reliability.
Description
Technical field
The present invention relates to a kind of maximum demand acquisition system, particularly a kind of multiple feed straight power purchase client's maximum demand
Acquisition system.
Background technology
The more existing collection about loop power supply client's maximum demand or monitoring system, its embodiment is all
(or needed by the electric energy meter active power of electric energy measurement automation system Real-time Collection multiloop supply line
Amount), calculate Electricity customers maximum active demand in real time.The program is directly to gather per minute the gaining merit of electric energy meter
Power (or requirement), uses system synthesis to calculate maximum demand.But acquisition system of the prior art exists
Following shortcoming: 1) Data Source is in ammeter, but time of occurring of data comes from by acquisition terminal, due to
Gatherer process requires time for itself, so the time that markers one definite proportion of electric quantity data actually occurs is early.
2) data are stored in acquisition terminal, acquisition terminal possible generation data acquisition failure in gatherer process,
Interruption, loss etc. cannot obtain real historical data, and the integrity of data, reliability can not be guaranteed；
3) to the not requirement of electric energy meter decimal place, by being substantially reduced the fineness gathering data, system-computed is caused
Error increases, and accuracy can not be guaranteed.Requirement is caused to calculate error change very big and uncontrollable.
4) be provided without rack, modular construction, all functional modules cannot charged plug, operation maintenance
Difficulty, poor reliability.
5) it is provided without dual-power module, dual network passage, the job stability of data acquisition equipment and safety
Difference.
6) collecting device memory capacity is little, history data store ability.
7) when the data gathered exist loss situation, take estimation mode, exist and data are modified
And recruitment behavior, data are illegal, do not have statutory force.
Summary of the invention
In place of it is an object of the invention to overcome the deficiencies in the prior art, and provide a set of and can meet true electricity consumption feelings
The power consumption data and curves of condition, with guarantee whole output result maximum demand authentic and valid, standard can be complied fully with
Requirement computational rules, the multiple feed straight power purchase client maximum demand collection system that can effectively support charge calculation
System.
A kind of multiple feed straight power purchase client's maximum demand acquisition system, includes metering device, station collection
Device, main station system, the precision of the ammeter of described metering device be 0.2S rank, according to the density of one minute,
The electric degree load curve of at least 1 month can be preserved, and the electric energy of data can be provided out with the passage of RS485
Table, described electric energy meter is arranged on the stoichiometric point between large user and electrical network,
Described station harvester includes maximum demand harvester, RS485 is directly connected to or RS485-optical fiber
Signal conversion equipment and the network switch and optical fiber-link switch equipment, described S485 is directly connected to or RS485-
Fiber-optic signal conversion equipment connects metering device and maximum demand harvester respectively, and the network switch and optical fiber-network turn
Exchange device connects maximum demand harvester and main station system respectively, and described maximum demand harvester is according to the ginseng set
Number, each appointment time just gathers the electric degree load curve data of metering device part, after collection data complete every time,
Read in the current time of ammeter from ammeter, then judge whether the difference between ammeter event and harvester exceedes parameter and set
Fixed limit value, if it does, just ammeter is calibrated, the time of harvester then depend on main station system pair time
Module, described maximum demand harvester can store long ammeter load curve data；
Described main station system include data acquisition module, pair time module, data inquiry module and report output
Module, described data acquisition module is for being acquired being stored in the electric energy meter data inside harvester, described
Pair time module include and obtain the time from GPS satellite clock module, adjust the clock of main station system itself, and according to behaviour
The setting of work person, the clock two ways of timing adjustment harvester,
Described data inquiry module, it is possible to carry out the inquiry of ammeter data, and by data display to user,
Described report output module uses algebraically when carrying out the load computing of multiple feed straight power purchase client
The method of superposition, is specially each physics ammeter being had, as the parts of independent measure one by one,
And these Data Integrations together, be designated as just remembering with reverse active energy meritorious for the forward of all electric energy meters
Carrying out algebraical sum computing for negative, described report output module is carrying out multiple feed straight power purchase client
During big requirement, the method according to slippage requirement calculates, specifically, the most after one minute, just the electricity of first 15 minutes
Energy adds up, and the time occurred divided by electricity, calculates current time multiple feed straight power purchase visitor
The requirement at family, 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 measuring some n current time, is just generally being designated as
Number
P ' n represents and measures some n primary side forward active energy indicating value before δ t, generally
It is designated as positive number
Rn represents the primary side reverse active energy indicating value measuring some n current time, is generally designated as bearing
Number
R ' n represents the primary side reverse active energy indicating value measuring some n current time, is generally designated as
Negative
N is stoichiometric point or ammeter sequence number,
δ t represents the requirement capture cycle, calculates according to 15 minutes in Fujian
So, according to the electric quantity curve numerical value that time interval is 1 minute, 1440 just can be generated every day,
Every month produces 30(31) * 1440=43200(44640) individual requirement value, therefrom choose of that month multiple feed and directly purchase
Electricity client's maximum demand and time of origin, as the foundation of charge calculation.
Multiple feed straight power purchase client's maximum demand acquisition system of the present invention, owing to have employed specific electricity
Every 1 minute load curve data can be stored in electric energy meter by energy table, and in table, data are not lost, can be at any time
Gather historical data, it is ensured that the integrity of data, reliability.Electric energy meter error curve is stable, will not be at any time
Between change and drift about.Use again special maximum demand harvester to carry out data acquisition, data acquisition equipment is had
It is strict with, and harvester memory capacity is big, history data store ability is strong.Due to all data gathered
Data are not carried out any amendment and supplement, only comparing, analyze sum by all electric energy meter internal datas
According to extraction.Data are electric energy meter initial data, and data are legal, have statutory force.Main website realizes many
The maximum demand production method that power supply is powered complies fully with the specification of measurement instrument, real from Method And Principle to system
Technical measures strict for Shi Douyou ensure.
Described data acquisition includes random acquisition and timing acquiring two kinds, and random acquisition can allow operator set
Fixed ammeter, the time started of data and the end time needing to gather, then send request data to harvester
Message, obtain from harvester and store data；Timing acquiring is according to the setting of operator, every specify
Time, just the meter group specified is carried out data acquisition.When performing timing acquiring, first system can be retrieved
History acquisition and recording, if had in the past gather failed situation (, be correctly completed the time of collection the last time
The time started of data is gathered, in order to keep the complete, continuous of data as this.
Described electric energy meter should use 4 arithmetic point modes store and show.Maximum need can be effectively improved
The amount accuracy of measuring
Described maximum demand harvester uses rack, modular construction, and all functional modules can be charged
Plug, operation maintenance is convenient, reliability is high
Described maximum demand collection storage uses dual-power module, dual network passage.Guarantee data acquisition equipment
Job stability and safety.
The workflow of described main station system is:
1) collection action is the clock in the case of of triggering: first harvester is inquired about the needs being stored in data base and adopted
Collection data ammeter list, then according to inquire to current ammeter last time acquisition state and this ammeter counting
According to the final data in storehouse, determine the collection start time point of current task, further according to the current master station time, adopt
The collection cycle determines 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 received, parses the maximum demand data of ammeter and is saved in data base, simultaneously
Record this communication state gathered, in case data acquisition later or event query use, finally according to task
The definition of itself, if having been defined for task when automatic pair, then obtains clock and the standard of current harvester
Time transfer receiver, according to size and the setting of system of time difference, when carrying out harvester pair.
2) for collection action be the acquisition tasks that triggers of operator then directly according to the setting of operator, obtain and specify
The maximum demand data and curves specifying the time period of ammeter.
Its mechanism gathering data of described maximum demand harvester is clocked flip: when harvester circulation obtains
Clock the parameter according to maximum demand harvester inner setting, it is determined whether data acquisition should be carried out at once.
When gathering maximum demand data, first harvester obtains in harvester when being correctly completed collection last
Between the data of point, and calculate the finish time data of current acquisition tasks, the then data to current ammeter
It is acquired and preserves data.Check the clock of current ammeter after having gathered, if can pair time and
Within error when needing pair, order when ammeter is sent pair by maximum demand harvester.
In sum, the present invention following advantage compared to existing technology:
Multiple feed straight power purchase client's maximum demand acquisition system of the present invention,
1) calculating for multiple feed straight power purchase client's maximum demand provides strict data model.
Before making the present invention, the user powered for single supply, is to have strict accurate maximum demand to calculate
Method.The present invention then extracts in the case of multiple power supplies is powered, the exact algorithm model of maximum demand.
2) a set of strict solution is provided, it is ensured that it is original that acquirement multiple power supplies is powered, and uses accurately
Electric load curve
After the computation model that specify that multiple feed client's maximum demand, the invention provides complete set
Strict technical scheme, it is ensured that this computation model can obtain accurately, meet the data that metering clearing require
Input.I.e. multiple power supplies is total, meets the power consumption data and curves of true electricity consumption situation, whole defeated to guarantee
Go out the authentic and valid of result maximum demand.
3) the requirement result of calculation produced, can effectively support the clearing of the electricity charge
Owing to the data of this computation model input strictly from electric energy meter measurement instrument, algorithm model complies fully with
The requirement computational rules of standard, so the clearing of the electricity charge can effectively be supported.
Multiple feed of the present invention straight power purchase client's maximum demand acquisition system is workable, operation maintenance is simple, can
Good by property.
Accompanying drawing explanation
Fig. 1 is multiple feed of the present invention straight power purchase client's maximum demand acquisition system framework map.
Fig. 2 is the flow chart of main station system data acquisition of the present invention.
Fig. 3 is the flow chart of maximum demand harvester of the present invention.
Fig. 4 is multiple feed straight power purchase client's schematic diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of multiple feed straight power purchase client's maximum demand acquisition system, includes metering device, station collection
Device, main station system, the precision of the ammeter of described metering device be 0.2S rank, according to the density of one minute,
The electric degree load curve of at least 1 month can be preserved, and the electric energy of data can be provided out with the passage of RS485
Table, described electric energy meter is arranged on the stoichiometric point between large user and electrical network, and electric energy meter uses Landis&Gyr
The ZMD electric energy meter of company, electrical energy meter accuracy is that the arithmetic point of 0.2S level, electricity and requirement is shown as four.
Described station harvester includes maximum demand harvester, RS485 is directly connected to or RS485-light
Optical fiber signaling conversion equipment and the network switch and optical fiber-link switch equipment, described S485 is directly connected to
Or RS485-fiber-optic signal conversion equipment connects metering device and maximum demand harvester, the network switch respectively
And optical fiber-link switch equipment connects maximum demand harvester and main station system respectively, described maximum demand is adopted
Storage is according to the parameter set, and each appointment time just gathers the electric degree load curve number of metering device part
According to, collection data complete after every time, read in the current time of ammeter from ammeter, then judge ammeter event
With whether the difference between harvester exceedes the limit value that parameter sets, if it does, just ammeter is calibrated,
The time of harvester then depend on main station system pair time module, described maximum demand harvester permissible
Storing long ammeter load curve data, maximum demand harvester uses the FFC of Charles Rangel company maximum
Requirement harvester, this device use rack, modular construction, all functional modules can with charged plug,
Operation maintenance is convenient, reliability is high.And use dual-power module (AC/DC universal), dual network passage,
Guarantee job stability and the safety of data acquisition equipment.Additionally can the storing of this maximum demand harvester
Trimestral ammeter load curve data, main website at any time can obtain ammeter data from harvester.
As it was previously stated, the clock of harvester is the clock standard as ammeter, to guarantee all electric energy in whole system
The clock of table consistent (otherwise, ammeter the most accurately, time length, always have time error, and
And each ammeter error the most difference).So guarantee that the clock of harvester is accurate, it is simply that system is successful
Crucial.
In the present system, on the basis of GPS satellite clock, from main website to maximum demand harvester to electric energy meter
Time step by step pair, due to gather every time data all can to school time.
Native system is each hour, and main station system obtains temporal information from GPS, and when harvester school one
Secondary, it is possible to accurately maintain the clock of whole system unanimously, precisely.
Described main station system include data acquisition module, pair time module, data inquiry module and report output
Module, described data acquisition module is for being acquired being stored in the electric energy meter data inside harvester, described
Pair time module include and obtain the time from GPS satellite clock module, adjust the clock of main station system itself, and according to behaviour
The setting of work person, the clock two ways of timing adjustment harvester, data acquisition module passes through IEC102 stipulations,
It is stored in the electric energy meter data inside harvester to be acquired.
Described data inquiry module, it is possible to carry out the inquiry of ammeter data, and by data display to user,
Described report output module uses algebraically when carrying out the load computing of multiple feed straight power purchase client
The method of superposition, is specially each physics ammeter being had, as the parts of independent measure one by one,
And these Data Integrations together, be designated as just remembering with reverse active energy meritorious for the forward of all electric energy meters
Carrying out algebraical sum computing for negative, described report output module is carrying out multiple feed straight power purchase client
During big requirement, the method according to slippage requirement calculates, specifically, the most after one minute, just the electricity of first 15 minutes
Energy adds up, and the time occurred divided by electricity, calculates current time multiple feed straight power purchase visitor
The requirement at family, 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 measuring some n current time, is just generally being designated as
Number
P ' n represents and measures some n primary side forward active energy indicating value before δ t, generally
It is designated as positive number
Rn represents the primary side reverse active energy indicating value measuring some n current time, is generally designated as bearing
Number
R ' n represents the primary side reverse active energy indicating value measuring some n current time, is generally designated as
Negative
N is stoichiometric point or ammeter sequence number,
δ t represents the requirement capture cycle, calculates according to 15 minutes in Fujian
So, according to the electric quantity curve numerical value that time interval is 1 minute, every day just can generate 1440, each
The moon produces 30(31) * 1440=43200(44640) individual requirement value, therefrom choose of that month multiple feed straight power purchase visitor
Family maximum demand and time of origin, as the foundation of charge calculation.
Below to illustrate acquisition system specifically the applying in power system of the present invention.
As shown in Figure 4, being a multiple feed straight power purchase client, this large user also has self-supply power plant simultaneously, its
Middle current supply circuit 1(G1 represents, lower with) to current supply circuit 3(G3) be current supply circuit, send out a some critical point 1(and use
F1 represents), send out a some critical point 2(F2) be the online stoichiometric point of power plant for self-supply.Selected by system, ammeter is for count simultaneously
Measuring forward and reverse active energy, so the erect image of tri-stoichiometric points of G1/G2/G3 has number, and reversely gaining merit actual is 0,
In turn, F1/F2 reversely has power, and forward active power is 0. so at this by example, this user is total
Power consumption actual be equal to: the forward of G1, G2, G3 is gained merit sum (being designated as: ZG1+ZG2+ZG3), deduct F1,
The most meritorious sum (being designated as: FF1+FF2) of F2, wherein ZG represents that forward is powered, and FF represents reverse power generation.This
Total electricity consumption E=(ZG1+ZG2+ZG3)-(FF1+FF2) of this user of sample as long as obtaining the electric degree ins and outs of E per minute,
Just can calculate slippage requirement, and then try to achieve the maximum demand in the appointment time period and time of origin.Extend a step again,
If we define all trends pointing to big customer is forward, the trend of big customer is reversely dorsad, the most not
Being power supply with considering which point, which point is generating, directly utilizes formula: E=(Z1+Z2+ ...+Zn)-(F1+F2+ ...+Fn)
Wherein Zn represents the forward of stoichiometric point n and gains merit, and Fn represents the reversely meritorious of stoichiometric point n.
I.e. can get the electricity consumption situation that user is total, simply when E is less than 0, i.e. the time period of user's generating, electric degree is bent
Line is not as the clearing foundation calculating the i.e. time of origin of maximum demand.
The workflow of described main station system is:
1) collection action is the clock in the case of of triggering: first harvester is inquired about the needs being stored in data base and adopted
Collection data ammeter list, then according to inquire to current ammeter last time acquisition state and this ammeter counting
According to the final data in storehouse, determine the collection start time point of current task, further according to the current master station time, adopt
The collection cycle determines 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 received, parses the maximum demand data of ammeter and is saved in data base, simultaneously
Record this communication state gathered, in case data acquisition later or event query use, finally according to task
The definition of itself, if having been defined for task when automatic pair, then obtains clock and the standard of current harvester
Time transfer receiver, according to size and the setting of system of time difference, when carrying out harvester pair.
2) for collection action be the acquisition tasks that triggers of operator then directly according to the setting of operator, obtain and specify
The maximum demand data and curves specifying the time period of ammeter.
Its mechanism gathering data of described maximum demand harvester is clocked flip: harvester circulation obtains clock root
Parameter according to maximum demand harvester inner setting, it is determined whether data acquisition should be carried out at once.Need gathering maximum
During amount data, first harvester obtains in harvester the data of the final time point being correctly completed collection, and calculates
Go out the finish time data of current acquisition tasks, then the data of current ammeter be acquired and preserve data.Gather
Check the clock of current ammeter after completing, if can pair time and error when needing pair within, maximum demand is adopted
Order when ammeter is sent pair by storage.
The not described part of the present embodiment is same as the prior art.
Claims (7)
1. multiple feed straight power purchase client's maximum demand acquisition system, it is characterised in that: include metering device,
Station harvester, main station system, described metering device includes ammeter, the ammeter of described metering device
Precision is 0.2S rank, described ammeter according to one minute density, preserve the electric degree load of at least 1 month
Curve, and it is provided out data with the passage of RS485, the ammeter of described metering device is arranged on large user
And the stoichiometric point between electrical network,
Described station harvester includes maximum demand harvester, RS485 interface, RS485-fiber-optic signal
Conversion equipment and the network switch and optical fiber-link switch equipment, between metering device and maximum demand harvester
Connect or for be directly connected to or for be attached by RS485-fiber-optic signal conversion equipment by RS485 interface,
Big requirement harvester is then attached by the network switch and optical fiber-link switch equipment with main station system, described
Maximum demand harvester is according to the parameter set, and the electric degree load that each appointment time just gathers metering device part is bent
Line data, are gathering after data complete every time, are reading in the current time of ammeter from ammeter, then judge ammeter event with
Whether the difference between harvester exceedes the limit value that parameter sets, if it does, be just calibrated ammeter, and gathers
The time of device then depend on main station system pair time module, described maximum demand harvester stores long ammeter and bears
Lotus curve data；
Described main station system include data acquisition module, pair time module, data inquiry module and report output
Module, described data acquisition module is for being acquired being stored in the ammeter data inside harvester, and described is right
Time module include and obtain the time from GPS satellite clock module, adjust the clock of main station system itself, and according to operation
The setting of member, the clock two ways of timing adjustment harvester,
Described data inquiry module, it is possible to carry out the inquiry of ammeter data, and by data display to user,
Described report output module uses algebraically when carrying out the load computing of multiple feed straight power purchase client
The method of superposition, is specially each physics ammeter being had, as the parts of independent measure one by one,
And these Data Integrations together, be designated as just being designated as with reverse active energy meritorious for the forward of all ammeters
Bearing and carry out algebraical sum computing, described report output module is carrying out the maximum of multiple feed straight power purchase client
During requirement, the method according to slippage requirement calculates, specifically, the most after one minute, just the electric energy of first 15 minutes
Amount adds up, and the time occurred divided by electricity, calculates current time multiple feed straight power purchase client
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 measuring some n current time, is just generally being designated as
Number
P ' n represents and measures some n primary side forward active energy indicating value before δ t, generally
It is designated as positive number
Rn represents the primary side reverse active energy indicating value measuring some n current time, is generally designated as bearing
Number
R ' n represents and measures some n primary side before δ t reverse active energy indicating value, generally
It is designated as negative
N is stoichiometric point or ammeter sequence number,
δ t represents the requirement capture cycle, calculates according to 15 minutes in Fujian
So, according to the electric quantity curve numerical value that time interval is 1 minute, generating 1440 every day, every month produces
30*1440=43200 or 31*1440=44640 requirement value, therefrom chooses the of that month straight power purchase of multiple feed
Client's maximum demand and time of origin, as the foundation of charge calculation.
Multiple feed the most according to claim 1 straight power purchase client's maximum demand acquisition system, its feature exists
In: described data acquisition includes random acquisition and timing acquiring two kinds, and random acquisition can allow operator set
Need ammeter, the time started of data and the end time gathered, then send the report of request data to harvester
Literary composition, obtains from harvester and stores data；Timing acquiring is according to the setting of operator, every the time specified,
Just the meter group specified being carried out data acquisition, when performing timing acquiring, first system can retrieve history collection
Record, if there being the failed situation of gathering in the past, is then correctly completed time of collection the last time and adopts as this
The time started of collection data, in order to keep the complete, continuous of data.
Multiple feed the most according to claim 2 straight power purchase client's maximum demand acquisition system, its feature exists
In: described ammeter should use 4 arithmetic point modes store and show.
Multiple feed the most according to claim 3 straight power purchase client's maximum demand acquisition system, its feature exists
In: described maximum demand harvester uses rack and modular construction.
Multiple feed the most according to claim 4 straight power purchase client's maximum demand acquisition system, its feature exists
In: described maximum demand collection storage uses dual-power module, dual network passage.
Multiple feed the most according to claim 1 straight power purchase client's maximum demand acquisition system, its feature exists
In: the workflow of described main station system is:
(1) collection action is the clock in the case of of triggering: first harvester is inquired about the needs being stored in data base and adopted
Collection data ammeter list, then according to inquire to current ammeter last time acquisition state and this ammeter counting
According to the final data in storehouse, determine the collection start time point of current task, further according to the current master station time and adopt
The collection cycle determines the collection end time point of current task, and according to ammeter information and beginning and ending time tissue and transmission
Message, according to the message received, parses the maximum demand data of ammeter and is saved in data base, simultaneously
Record this communication state gathered, in case data acquisition later or event query use, finally according to task
The definition of itself, if having been defined for task when automatic pair, then obtains clock and the standard of current harvester
Time transfer receiver, according to size and the setting of system of time difference, when carrying out harvester pair；
(2) for collection action be the acquisition tasks that triggers of operator then directly according to the setting of operator, obtain and specify
The maximum demand data and curves specifying the time period of ammeter.
Multiple feed the most according to claim 1 straight power purchase client's maximum demand acquisition system, its feature exists
In: its mechanism gathering data of described maximum demand harvester is clocked flip: harvester circulation obtains clock
And according to the parameter of maximum demand harvester inner setting, it is determined whether data acquisition should be carried out at once, adopt
During collection maximum demand data, first harvester obtains in harvester the final time point being correctly completed collection
Data, and calculate the finish time data of current acquisition tasks, then the data of current ammeter are acquired
And preserve data, check the clock of current ammeter after having gathered, if can pair time and when needing pair
Within error, order when ammeter is sent pair by maximum demand harvester.
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