Summary of the invention
The present invention is by analyzing electrical network critical point metering model, advanced technologies such as utilization software design, modern communication, database, data, services, set up electrical network critical point electric weight and checked model, reasonable, effective gate energy meter data verification method is provided, ensure critical point accurate measurement, reliable, ensure electrical network critical point electric weight trade settlement justice, just.
For achieving the above object, the present invention takes following technical scheme to realize:
Check model and analyze electrical network critical point electric quantity data, ensure that the critical point electric quantity data is accurate, reliable, realizes system demonstration based on the B/S framework by five re-graduation accounting methods.
Electrical network critical point electric weight check method is characterized in that: may further comprise the steps,
(1) sets up the check model: based on electrical network critical point measuring control model, take out data object model,, set up and check model by critical point stoichiometric point corresponding relation;
(2) check algorithm: utilize the check model to carry out electric weight and calculate in real time and check, comprise the check algorithm processing module in the check model, the check algorithm of checking the algorithm processing module employing comprises that major-minor balance check, circuit are to lateral balance check, the check of bus balance, generator outlet and the check of main transformer high-pressure side balance, the check of integration electric weight;
(3) data storage: check calculating process and utilize metadata cache, fast, stablely obtain electric network data from buffer memory, from database, extract real-time electric quantity data simultaneously, utilize the multi-thread concurrent technology, check electric quantity data according to checking algorithm computation, deposit analysis result in database, and simultaneously up-to-date analysis result is deposited in the buffer memory, caching technology has reduced the database access amount, makes extraction, analysis and the WEB application interface of data show efficient more, timely;
(4) the WEB application interface is showed: realize based on the B/S framework, adopt the EXT framework, and direct data in the access cache, after data are processed, the information of showing metering fault at the WEB page.
Described WEB page exhibition method has modes such as tabulation, graphical (curve, column), message, in time reminds the operator on duty to find metering faults such as error in dipping, measuring apparatus fault, electric weight imbalance, assisted user discriminatory analysis.
Described check model is based on metering model, and the uses energy conservation principle adopts methods such as integration, slippage, match to carry out electric weight and calculates in real time and check, and guarantees that check result is correct, reliable.
Described data storage adopts modified EHCACHE technology to carry out buffer memory to checking model data, makes the check data access efficient, stable.
Described check algorithm can be according to service needed, and rule and checking task are checked in configuration, automatically, regularly triggers and checks algorithm processing module.
Described WEB application interface shows and checks algorithm and adopt same caching process that both make data access in enormous quantities more real-time, quick by the buffer area interaction data.
Described five re-graduation accounting methods comprise that major-minor balance check, circuit to lateral balance check, the check of bus balance, generator outlet and the check of main transformer high-pressure side balance, the check of integration electric weight, can guarantee that the check data are accurate and reliably, the check process is:
Major-minor balance is checked:
Electric system metering critical point has the polylith electric energy meter to move simultaneously usually, in order to continuity and the stability of guaranteeing data.Wherein master meter is the charge electric energy table, is rates ground with the master meter metrical information, compares the rationality that the supplier of electricity electricity charge are collected with auxilliary table information.By the electric weight verification between the major-minor table, can draw the table meter and whether move normally, and two differences of showing between the meter.The algorithm that the present invention proposes is as described below:
Formula A=[∣ (master meter data-auxilliary table data) ∣/master meter data] * 100%
Formula B=∣ master meter data-auxilliary Biao is Shuoed Ju ∣
Wherein: major-minor table data are meant major-minor table whole day accumulative total electric flux.
This algorithm comes verification to judge whether the critical point data are qualified according to different electric pressures:
The 500kV circuit: if every day master meter accumulative total electric flux greater than 1,500,000 degree, adopt formula A, otherwise adopt formula B, as formula A〉0.5% or formula B 6000 when spending for unusual.
The 220kV circuit: if every day master meter accumulative total electric flux greater than 200,000 degree, adopt formula A, otherwise adopt formula B, as formula A〉0.5% or formula B 1000 when spending for unusual.
The 110kV circuit: if every day master meter accumulative total electric flux greater than 100,000 degree, adopt formula A, otherwise adopt formula B, as formula A〉0.5% or formula B 600 when spending for unusual.
The 35kV circuit: if every day master meter accumulative total electric flux greater than 50,000 degree, adopt formula A, otherwise adopt formula B, as formula A〉0.5% or formula B 300 when spending for unusual.
Circuit is checked lateral balance:
According to the electric quantity balancing relation of gate energy meter and circuit offside electric energy meter, investigate transmission line of electricity line loss situation between gauging table meter, circuit operating condition and factory's net in real time.The electric energy data that calculating and analysis and utilization are gathered, with each metering gate energy meter electric weight, respectively send into the substation electric energy meter electric weight, according to its corresponding period, calculate the dividing potential drop line loss, determine by computational analysis whether line loss is unusual, whether there are measuring apparatus fault, misalignment, stealing etc., reach the purpose of monitoring critical point operation.
Line loss per unit=[(closing oral-lateral electric weight-balance side electric weight)/pass oral-lateral electric weight] * 100%
The bus balance is checked:
According to law of conservation of energy, electric energy will convert mechanical energy, chemical energy, heat energy or luminous energy etc. according to the intention of electricity consumption department to and effectively utilize after being transported to customer site electricity consumption system, also have the portion of energy loss in conversion and course of conveying.So the electric weight of inlet highway adds that with the electric weight of output bus the electric weight of transmission transfer process loss should be consistent.Carry out verification by electric quantity data before the inlet highway and the on high-tension side electric quantity data of input main transformer, can draw the operation conditions at current critical point.
Bus balanced ratio=[(inlet highway electric weight-output bus electric weight)/inlet highway electric weight] * 100%
Generator outlet and main transformer high-pressure side balance are checked:
With in like manner last, there is equilibrium relation between generator outlet electric weight, station-service electric weight and the main transformer high-pressure side electric weight, generator output electric quantity data and the on high-tension side electric quantity data of main transformer carry out verification.
Generating balanced ratio=[(generator output electric weight-station-service electric weight-main transformer high-pressure side input electric weight)/generator output electric weight] * 100%
The integration electric weight is checked:
The real-time image data of table meter is checked with EMS power integration electric weight.The result who calculates Source of Gateway Meter counting certificate and the computing in the same period of EMS power integration electric weight compares, and the metering of decision table meter occurs unusual if deviate goes beyond the scope.
Integration electric weight check rate=[(table quantity calculation-power integration electric weight)/table quantity calculation] * 100%.
The beneficial effect that the present invention reached: the difficult point that the present invention is directed to electric system metering critical point management work, propose electrical network critical point electric weight and checked model, guaranteed to check the rationality of algorithm, and, adopted technological means to carry out good solution at subject matters such as real-time frequent in the general real-time monitoring platform design process, stability, extendabilities.
(1) model is by analyzing critical point metering electric network model, binding data is checked professional, utilize critical point quantitative relation, measuring apparatus characteristic, continuous data etc. to carry out the analysis of specialty, analyze data by WEB application interface real-time exhibition, in time reflect critical point metering state, the reliability of critical point continuous data is guaranteed, for the critical point measuring control provides technical support.
(2) check model based on metering model, the uses energy conservation principle, adopt technical design such as integration, slippage, match major-minor balance check, circuit to lateral balance checks, the check of bus balance, generator outlet check with main transformer high-pressure side balance, the integration electric weight checks five tuples and carries out electric weight and calculate in real time and check according to checking algorithm, guarantees that check result correctly, reliably.
What (3) analysis and calculating process employing metadata cache technology was quick, stable obtains the electric network model data from buffer memory, from database, extract real-time electric quantity data simultaneously, utilize the multi-thread concurrent technology, efficiently handle the calculating electric quantity data according to checking algorithm, analysis result deposits database in, and simultaneously nearest analysis result is deposited in the buffer memory, caching technology has reduced the database access amount, make extraction, analysis and the application interface displaying of data efficient more, timely, can find metering fault faster.