CN106546944A - It is a kind of in the method for having line loss system lieutenant colonel to test electric power meter error - Google Patents
It is a kind of in the method for having line loss system lieutenant colonel to test electric power meter error Download PDFInfo
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Abstract
The present invention is applied to Electric Energy Metering Technology field, there is provided a kind of in the method for having line loss system lieutenant colonel to test electric power meter error, the electric power meter of given at least one known universe error is used as error criterion device, wherein, there is line loss system to have the electric power meter of one or more global error to be measured, electric power meter be located transmission line of electricity there is line loss, with the electric power meter of global error to be calculated position in systems as partitioning site, the transmission line of electricity in system is divided into into multistage；The line loss value of wherein each section of transmission line of electricity, is calculated with the reading and the error in dipping for testing out of the electric power meter of corresponding transmission line of electricity.Error criterion device of the embodiment of the present invention by introducing known universe error, error criterion device is further accessed the system for possessing multiple electric power meters, and the global error and line loss of each electric power meter are solved equal to line loss and the energy relationship of outlet electric energy sum using inlet wire electric energy.
Description
Technical field
The invention belongs to Electric Energy Metering Technology field, more particularly to a kind of there is line loss system lieutenant colonel to test electric power meter error
Method.
Background technology
As prior art mesohigh ammeter is when electric energy is measured, be required for voltage transformer summation current transformer by voltage signal and
Current signal is gathered and passes to high pressure ammeter and is converted into electric flux.Therefore, the electric flux that existing high-tension electricity meter is calculated can be received
The interference of electromagnetic environment arround arriving, so as to produce immesurable error in dipping.
Using the difference of inlet wire electric energy meter and outlet electric energy meter calculating the mode of line loss on the basis of this high pressure gauge, due to high-tension electricity
Table itself there is immesurable error in dipping, therefore, the line loss value for finally giving is also incredible.What is more, existing skill
In art, the difference of this utilization inlet wire electric energy meter and outlet electric energy meter is not to be suitable for practical application scene come the mode for calculating line loss
In, the system being made up of multiple outlets.In this complex environment, total line loss can be drawn at most, and cannot calculate each bar or
The line loss of each section of circuit of person.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of in the method for having line loss system lieutenant colonel to test electric power meter error, to solve
Certainly prior art cannot calculate the problem of electric energy metering error and line loss error.
The embodiment of the present invention be achieved in that it is a kind of in the method for having line loss system lieutenant colonel to test electric power meter error, give
The electric power meter of at least one known universe error as error criterion device, wherein, it is described have line loss system have one or
There is line loss in the electric power meter of multiple global errors to be measured, the transmission line of electricity that described electric power meter is located, with
The electric power meter of global error to be calculated position in systems is partitioning site, by the power transmission line having in line loss system
K-path partition is multistage；The line loss value of wherein each section of transmission line of electricity, with reading and the test of the electric power meter of corresponding transmission line of electricity
Error in dipping out is calculated, and be the method comprising the steps of：
It is described have line loss system in connect the electric power meter of at least one known universe error as error criterion device；Each electricity
Energy metering device gathers the electric energy related data of respective place circuit, and the electric energy related data is reported global error calculating
Device；The global error computing device has the electric energy phase that each electric power meter in line loss system is reported according to receiving
Close global error and line loss that data solve each electric power meter.
Preferably, the global error computing device has what each electric power meter in line loss system was reported according to receiving
Electric energy related data solves the global error and line loss of each electric power meter, specifically includes：
The global error computing device has the energy value and corresponding current that each electric power meter in line loss system reports described in receiving
Value, according to the electric flux accumulated value under the cumulative each current segmenting for obtaining of line current segmentation of different sizes；By the electric flux
Accumulated value set up comprising global error and line loss error as variable, comprising error criterion device error amount as known constant equation
Formula；
Electric energy related data that the global error computing device is reported according to the multiple each electric power meter for receiving or according to each
What electric power meter was reported belongs to the equation group that the electric energy related data foundation of different time sections is made up of the equation；It is logical
Cross and solve the equation group, be calculated the line loss of global error of each electric power meter in each classification and correspondent section transmission line of electricity
Value.
Preferably, the error in dipping of the electric power meter for being obtained using methods described measuring and calculating is global error, the entirety
Error is the error considered under electric power meter running status, according to the segmentation of line load size of current, is specifically included：By
The sum of the deviations that electric energy computation chip and its circuit, current sensor and voltage sensor three cause, is also included by other influences
The sum of the deviations that factor is caused；Wherein, the sum of the deviations that other influences factor is caused includes：Electromagnetic environment residing for three is to certainly
Figure rings caused error, and the error caused by the mutual line of three and interference.
Preferably, it is described and the electric energy related data is reported into global error computing device, specifically include：
Each electric power meter gathers the current data and voltage data of same period, and calculates correspondence energy data, the calculating
Energy data according to detection current data size be segmented.
Preferably, described system can be AC transmission system, or DC transmission system, or alternating current-direct current mixing
System, described transmission system is made up of transmission line of electricity, wherein, transmission line of electricity can be single-phase, three-phase or multiphase
Transmission line of alternation current, or DC power transmission line.
Preferably, described global error computing device, specifically includes：Described electric power meter, electric energy information collector
Or it is terminal, centralized automatic meter-reading device, all kinds of with communicating and/or have the smart machine of computing capability.
Preferably, the access way of described error criterion device is specifically included：By the error criterion device and the system to be measured
In it is arbitrary go here and there, be connected in parallel into and out of line circuit electric power meter, or, exclusively for the error criterion device described
System to be measured and with a new circuit is set up between electric loading.
Preferably, in the examining system as error criterion device electric power meter composition, specifically include：
Error criterion device is made up of electric energy computation chip circuit board, current sensor and voltage sensor；Wherein, electric energy metrical core
Piece circuit board and the current sensor, voltage sensor are installed in a housing that can shield extraneous electromagnetic interference.
A kind of beneficial effect in the method for having line loss system lieutenant colonel to test electric power meter error provided in an embodiment of the present invention includes：
The error criterion device is further accessed and possesses multiple by error criterion device of the embodiment of the present invention by introducing known universe error
The system of electric power meter, and the energy relationship of line loss and outlet electric energy sum is equal to using inlet wire electric energy, solve each electric energy
The global error and line loss of metering device.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to needed for embodiment or description of the prior art
Accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining which according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of flow chart in the method for having line loss system lieutenant colonel to test electric power meter error provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart in the method for having line loss system lieutenant colonel to test electric power meter error provided in an embodiment of the present invention；
Fig. 3 is a kind of configuration diagram for having line loss system provided in an embodiment of the present invention；
Fig. 4 is provided in an embodiment of the present invention a kind of in the system architecture diagram for having line loss system lieutenant colonel to test electric power meter error；
Fig. 5 is provided in an embodiment of the present invention a kind of in the system architecture diagram for having line loss system lieutenant colonel to test electric power meter error；
Fig. 6 is a kind of data relation schematic diagram with electric energy relevant information provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, to this
It is bright to be further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and without
It is of the invention in limiting.
In order to illustrate technical solutions according to the invention, illustrate below by specific embodiment.
Embodiment one
Be illustrated in figure 1 it is provided in an embodiment of the present invention a kind of in the method for having line loss system lieutenant colonel to test electric power meter error,
The electric power meter of at least one known universe error is given as error criterion device, wherein, it is described to have line loss system to have one
Or the electric power meter of multiple global errors to be measured, there is line loss in the transmission line of electricity that described electric power meter is located,
With the electric power meter of global error to be calculated position in systems as partitioning site, by the transmission of electricity having in line loss system
Circuit is divided into multistage；The line loss value of wherein each section of transmission line of electricity, with reading and the survey of the electric power meter of corresponding transmission line of electricity
Try out the error in dipping for coming to be calculated, the method comprising the steps of：
In step 201, it is described have line loss system in connect the electric power meter of at least one known universe error as by mistake
Difference standard.
In step 202., each electric power meter gathers the electric energy related data of respective place circuit, and the electric energy is related
Data report global error computing device.
Wherein, in specific implementation, the electric energy related data can be anticipated by each electric power meter,
It can also be the initial data recorded by each electric power meter.Energy value is contained in the electric energy related data and for being segmented
The cumulative corresponding parameter as reference, for example：Current value or segment identification etc..
In step 203, the global error computing device has each electric power meter in line loss system according to receiving
The electric energy related data for reporting solves the global error and line loss of each electric power meter.
Wherein, described circuit line loss refers to the line loss of the circuit specified, and the line loss of described given line is by line loss two
The reading and measuring and calculating of end electric power meter error amount out is calculated.In addition to the line loss, further can also ask
The line loss per unit of solution system, wherein described line loss per unit refers to system line loss number accounts for some electric power meter institute of system online
The ratio of the electric flux on road.
The embodiment of the present invention proposes the error criterion device of known universe error, further accesses the error criterion device and possesses multiple
The system of electric power meter, and the energy relationship of line loss and outlet electric energy sum is equal to using inlet wire electric energy, solve each electric energy
The global error and line loss of metering device.
With reference to the embodiment of the present invention, there is a kind of preferred implementation, wherein, the global error computing device is according to reception
To described in, there is the electric energy related data that each electric power meter in line loss system is reported to solve the global error of each electric power meter
And line loss, specifically include：
The global error computing device has the energy value and corresponding current that each electric power meter in line loss system reports described in receiving
Value, according to the electric flux accumulated value under the cumulative each current segmenting for obtaining of line current segmentation of different sizes；By the electric flux
Accumulated value set up comprising global error and line loss error as variable, comprising error criterion device error amount as known constant equation
Formula.
In preferred scheme, there is in each electric power meter current segmenting function, i.e., each electric power meter is being collected
During current data, the electric current for belonging to different segmented contents is recorded as into current value, wherein, the current value is a scalar value, is used for
Identify the current segmenting.
Electric energy related data that the global error computing device is reported according to the multiple each electric power meter for receiving or according to each
What electric power meter was reported belongs to the equation group that the electric energy related data foundation of different time sections is made up of the equation；It is logical
Cross and solve the equation group, be calculated the line loss of global error of each electric power meter in each classification and correspondent section transmission line of electricity
Value.
With reference to the embodiment of the present invention, need to illustrate a concept.The electricity that the embodiment of the present invention is obtained using methods described measuring and calculating
The error in dipping of energy metering device is global error, and the global error is under electric power meter running status, according to circuit
The error that the big subsection of load current is considered, the constituent element of the global error specifically include：By electric energy computation chip and its
The sum of the deviations that circuit, current sensor and voltage sensor three cause, also includes that the error caused by other influences factor is total
With；Wherein, the sum of the deviations that other influences factor is caused includes：Electromagnetic environment residing for three is to the mistake caused by itself affect
Difference, and the error caused by the mutual line of three and interference.
With reference to the embodiment of the present invention, there is a kind of preferred expansion scheme, wherein, as error criterion device in the examining system
Electric power meter composition, specifically include：
Error criterion device is made up of electric energy computation chip circuit board, current sensor and voltage sensor；Wherein, electric energy metrical core
Piece circuit board and the current sensor, voltage sensor are installed in a housing that can shield extraneous electromagnetic interference.
Before the global error concept of the embodiment of the present invention is proposed, there is the concept of standard error in prior art, but institute
It is an interval concept to state standard error, and is immesurable for electric energy meter of the prior art.The present invention is proposed
Electric power meter, as the structure of the electric power meter ensure that each apparatus module for being related to electric energy calculating shields extraneous electricity
Magnetic disturbance so that the electric power meter measure electric energy when error referred to as can measured value, the value is in various embodiments of the present invention
In be referred to as global error.
With reference to the embodiment of the present invention, there is a kind of preferred expansion scheme, wherein, it is described and the electric energy related data is reported
To the mode of global error computing device, can specifically include：
Each electric power meter gathers the current data and voltage data of same period, and calculates correspondence energy data, the calculating
Energy data according to detection current data size be segmented.
With reference to the embodiment of the present invention, there are several optional schemes, wherein, described system can be AC transmission system,
Can be DC transmission system, or the system of alternating current-direct current mixing, described transmission system is made up of transmission line of electricity, its
In, transmission line of electricity can be single-phase, three-phase or polyphase ac transmission line of electricity, or DC power transmission line.
With reference to the embodiment of the present invention, there are several optional schemes, wherein, described global error computing device, specially：
It is described electric power meter, electric energy information collector or terminal, centralized automatic meter-reading device, all kinds of with communicating and/or have computing capability
Smart machine.
With reference to the embodiment of the present invention, there is a kind of preferred implementation, wherein, the access way of described error criterion device has
Body includes：Arbitrary in the error criterion device and the system to be measured is gone here and there into and out of line circuit electric power meter, and
Row connection, or, exclusively for the error criterion device in the system to be measured and with a new circuit is set up between electric loading.
Embodiment two
The present embodiment, is solved each in illustrating how with regard to system involved in embodiment one from Computing Principle and computational methods angle
Each section of line loss in the global error and system of electric power meter.In the present embodiment, it is received in global error computing device
The energy data that each electric power meter is reported, and be stored with enough long-time, the energy data of q.s, its Computing Principle and
Process is specifically described as follows：
According to the principle for having inlet wire electric flux in line loss system to be equal to outlet electric flux and said system line loss sum.
In step 301, by the energy data recorded by the inlet wire electric power meter in the specified time and by outlet electricity
The energy data of energy metering device record, with reference to error amount variable and set system energy under each comfortable load current section
Consumption variable, constructs energy balance equation, and the current data for reading n times system can form N number of equation and constitute equation group；Institute
Stating energy equation includes error amount variable of each electric power meter under each load current section；
In step 302, global error computing device obtains each electric power meter for storing electric energy in corresponding load current section
Data.
In step 303, the energy data is made in substituting into energy equation according to its corresponding load current segmentation
For the coefficient of corresponding error amount variable, equationof structure formula and equation group, using the known error of error criterion device, the energy is solved
Amount equilibrium equation group, obtains error amount of each electric power meter in each load level, and then obtains described line loss value.
Embodiment three
Originally on the basis of being implemented in two disclosure of embodiment one and embodiment, by the environment for being related to implement parameter, illustrate
How line loss is calculated.In the present embodiment, and in particular to electric power meter A, electric power meter B, electric power meter C
With electric power meter D, an and error criterion device.As shown in figure 3, wherein, electric energy metrical is filled existing use electric line
A is put in the mini system being made up of electric power meter A, electric power meter B, electric power meter C and electric power meter D
In belong to inlet wire electric power meter, its collection energy value be inlet wire electric energy；Electric power meter B, electric power meter C
Outlet electric energy is constituted with the summation of the energy value of electric power meter D collections；Wherein electric power meter A and the electric energy metrical
There is line loss in connection line L1, L2 and the L3 between device B, electric power meter C and electric power meter D.Specifically should
Electric power meter A in the present embodiment, electric power meter B, electric energy metrical dress are solved with the embodiment of the present invention one and embodiment two
Put the global error of C and electric power meter D, and circuit L1, L2 and L3 line loss when, specifically include：
In step 401, the connection error criterion device on the outlet line of electric power meter D.As shown in figure 4, wherein electric
The line loss of circuit L4 that can be between metering device D and error criterion device is negligible.
The mode for connecting error criterion device in having line loss system is not limited solely to the mode in step 401, also including for example：
The 1st, error criterion device is connected on the end of incoming cables of electric power meter A, electric power meter B and electric energy metrical dress is connected on
Put end of incoming cables or the leading-out terminal of C.
2nd, error criterion device is connected in parallel on into electric power meter B, electric power meter C or electric power meter D, as independent
One outlet is realizing, and designs electric terminal for which.As shown in figure 5, same error criterion device is to electric power meter A
Between the line loss of circuit L5 ignore.
For the most straightforward procedure that the line loss for realizing above-mentioned circuit L4 or L5 is ignored, be exactly by error criterion device as far as possible
Press close to electric power meter D (in Fig. 4 modes as an example) or electric power meter A.
Above-mentioned connected mode, when energy equation group is calculated, the electric energy related data for directly being gathered with error criterion device substitutes its string
The electric energy related data provided needed for electric power meter in the circuit of connection.And solving the entirety of other electric power meters
After error and after line loss, it is compared in the electric energy related data by being reported with the electric power meter connected, so as to solve
Go out the global error of the electric power meter of the series connection.
In step 402, global error computing device periodically receives electric power meter A, electric power meter B, electric energy metrical
The electric energy related data that device C and electric power meter D and standard error device are reported.
In the present embodiment, the electric energy related data includes multiple energy values, the timing statisticses of the correspondence energy value and each electricity
Corresponding current capacity grade can be worth, its data relation is with reference to shown in Fig. 6 forms.
By taking data content shown in Fig. 5 as an example, during energy value of each electric power meter within 1 of time that collects, electric energy metrical
Device can be according to the current capacity grade (relatively being drawn by current value and grade threshold) under concrete energy value, will be corresponding
Energy value is stored under corresponding current load level.
In step 403, global error computing device is utilized according to the respective global error value of different current capacity grades correspondence
The electric energy related data reported from each electric power meter (wherein, including standard error device) for receiving, builds equation
Group.By taking the parameter shown in Fig. 6 as an example, set of equations is as follows：
Wherein, xai、xbi、xciAnd xdiElectric power meter A, B, C and D respectively in current capacity grade i=1,2,3 and
Global error value (waiting to ask the unknown quantity for connecing) under 4；XsiThere is current capacity grade i=1,2,3 and 4 in line loss system to be measured
Under the system line loss per unit (waiting to ask the unknown quantity for connecing) relative to the electric flux on circuit L5.
Wherein x1、x2、x3And x4Be global error value of the standard error device respectively under current capacity grade 1,2,3 and 4 (
Know value).
In step 404, solving equation formula group, obtain global error of each electric power meter under each current capacity grade and
Energy consumption of the circuit under each current capacity grade.Wherein, energy consumption of the circuit under each current capacity grade is by using overall mistake
After the reading of difference amendment electric power meter, by doing what subtraction was obtained.For example：By calculating Total line loss amounts of the circuit L1 during measuring between A and B can be obtained.
Example IV
The present embodiment provides a kind of concrete application scene of the proposed by the invention method for having line loss verification electric power meter error.
For example：There are the power line networks that multiple cells or city are constituted, if there is city A to city B to say 3 feasible circuits,
Now, system is when selecting specifically to utilize that circuit, except considering in existing each bar circuit under loading condition, further
The method proposed using the embodiment of the present invention calculates the line loss of three-line, and the line loss for circuit gives weight.The line loss
Participate in the decision-making of final circuit, and obtain from city A to city B more energy-conservation, efficient transmission line of electricity.
Those of ordinary skill in the art are further appreciated that and realize that all or part of step in above-described embodiment method can be by
Program is completed to instruct the hardware of correlation, and described program can be stored in a computer read/write memory medium, described
Storage medium, including ROM/RAM, disk, CD etc..
Presently preferred embodiments of the present invention is the foregoing is only, it is not to limit the present invention, all in the spiritual and former of the present invention
Any modification, equivalent and improvement for being made within then etc., should be included within the scope of the present invention.
Claims (9)
1. it is a kind of in the method for having line loss system lieutenant colonel to test electric power meter global error, it is characterised in that given at least one
The electric power meter of known universe error as error criterion device, wherein, it is described to have line loss system to have one or more to be measured
The electric power meter of global error is calculated, the transmission line of electricity that described electric power meter is located has line loss, with to be calculated whole
The electric power meter of body error position in systems is partitioning site, and the transmission line of electricity having in line loss system is divided into
Multistage；The line loss value of wherein each section of transmission line of electricity, with the reading and the meter for testing out of the electric power meter of corresponding transmission line of electricity
Amount error is calculated；Methods described is specifically included：
It is described have line loss system in connect the electric power meter of at least one known universe error as error criterion device, each electricity
Energy metering device gathers the electric energy related data of respective place circuit, and the electric energy related data is reported global error calculating
Device；
The global error computing device has the electric energy that each electric power meter in line loss system is reported related according to receiving
Data solve the global error and line loss of each electric power meter.
2. method according to claim 1, it is characterised in that the global error computing device is according to what is received
There is the electric energy related data that each electric power meter in line loss system is reported to solve the global error and line loss of each electric power meter,
Specifically include：
The global error computing device has the energy value and corresponding current that each electric power meter in line loss system reports described in receiving
Value, according to the electric flux accumulated value under the cumulative each current segmenting for obtaining of line current segmentation of different sizes；By the electric flux
Accumulated value set up comprising global error and line loss error as variable, comprising error criterion device error amount as known constant equation
Formula；
Electric energy related data that the global error computing device is reported according to the multiple each electric power meter for receiving or according to each
What electric power meter was reported belongs to the equation group that the electric energy related data foundation of different time sections is made up of the equation；It is logical
Cross and solve the equation group, be calculated the line loss of global error of each electric power meter in each classification and correspondent section transmission line of electricity
Value.
3. method according to claim 1, it is characterised in that the global error computing device is according to what is received
There is the electric energy related data that each electric power meter in line loss system is reported to solve the global error and line loss of each electric power meter,
Specifically include：
The global error computing device has the energy value and corresponding current that each electric power meter in line loss system reports described in receiving
Segment information, the electric flux accumulated value added up according to the current segmenting information segmenting under each current segmenting for obtaining；By described
Electric flux accumulated value set up comprising global error and line loss error as variable, comprising error criterion device error amount as known constant
Equation；
Electric energy related data that the global error computing device is reported according to the multiple each electric power meter for receiving or according to each
What electric power meter was reported belongs to the equation group that the electric energy related data foundation of different time sections is made up of the equation；It is logical
Cross and solve the equation group, be calculated the line loss of global error of each electric power meter in each classification and correspondent section transmission line of electricity
Value.
4. according to the arbitrary described method of claim 1-3, it is characterised in that the electric energy obtained using methods described measuring and calculating
The error in dipping of metering device is global error, and the global error is born under electric power meter running status, according to circuit
The error that the big subsection of charged current is considered, specifically includes：By electric energy computation chip and its circuit, current sensor and voltage sensor
The sum of the deviations that device three causes, also includes the sum of the deviations caused by other influences factor；Wherein, other influences factor is caused
Sum of the deviations include：Electromagnetic environment residing for three to the error caused by itself affect, and by the mutual line of three and
The error that interference is caused.
5. method according to claim 1, it is characterised in that described and the energy value is reported into global error calculating
Device, specifically includes：
Each electric power meter gathers the current data and voltage data of same period, and calculates correspondence energy data, the calculating
Energy data according to detection current data size be segmented.
6. method according to claim 1, it is characterised in that described system can be AC transmission system, it is also possible to
It is DC transmission system, or the system of alternating current-direct current mixing, described transmission system is made up of transmission line of electricity, wherein,
Transmission line of electricity can be single-phase, three-phase or polyphase ac transmission line of electricity, or DC power transmission line.
7. method according to claim 1, it is characterised in that described global error computing device, specifically includes：Institute
It is the electric power meter stated, electric energy information collector or terminal, centralized automatic meter-reading device, all kinds of with communicating and/or have computing capability
Smart machine.
8. method according to claim 1, it is characterised in that the access way of described error criterion device is specifically included：
Arbitrary in the error criterion device and the system to be measured is gone here and there, is connected in parallel into and out of line circuit electric power meter,
Or, exclusively for the error criterion device in the system to be measured and with a new circuit is set up between electric loading.
9. method according to claim 1, it is characterised in that in the examining system as error criterion device electric energy meter
The composition of amount device, specifically includes：
Error criterion device is made up of electric energy computation chip circuit board, current sensor and voltage sensor；Wherein, electric energy metrical core
Piece circuit board and the current sensor, voltage sensor are installed in a housing that can shield extraneous electromagnetic interference.
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| CN109003436A (en) * | 2018-08-01 | 2018-12-14 | 武汉尤瑞卡节能科技有限公司 | A kind of multiple-in-one copies and accepts the method and system of the error calculation in system |
| CN110244254A (en) * | 2019-06-21 | 2019-09-17 | 上海市质子重离子医院有限公司 | A kind of multistage electric energy meter estimation error and method for diagnosing faults based on ratio |
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