CN110380413A - PMU allocation method, system, equipment and computer media in a kind of power grid - Google Patents
PMU allocation method, system, equipment and computer media in a kind of power grid Download PDFInfo
- Publication number
- CN110380413A CN110380413A CN201910667321.XA CN201910667321A CN110380413A CN 110380413 A CN110380413 A CN 110380413A CN 201910667321 A CN201910667321 A CN 201910667321A CN 110380413 A CN110380413 A CN 110380413A
- Authority
- CN
- China
- Prior art keywords
- power grid
- pmu
- value
- measuring
- result
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000005303 weighing Methods 0.000 claims abstract description 86
- 238000005259 measurement Methods 0.000 claims abstract description 49
- 238000011156 evaluation Methods 0.000 claims abstract description 17
- 238000010206 sensitivity analysis Methods 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 claims description 73
- 230000004048 modification Effects 0.000 claims description 73
- 238000004590 computer program Methods 0.000 claims description 28
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000004458 analytical method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
-
- H02J13/0075—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
This application discloses PMU allocation method, system, equipment and computer medias in a kind of power grid, obtain the original measuring value obtained after measuring to each measuring node in power grid；Sensitivity Analysis Method based on state estimation determines each measuring node to the weighing factor of the state estimation result of power grid by original measuring value；Placement result of the PMU in each measuring node is determined according to weighing factor；It obtains after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition；Performance evaluation is carried out to power grid based on measurement result.PMU allocation method in a kind of power grid provided by the present application, so that the placement result of PMU is associated with the weighing factor of each measuring node, it is ensured that carry out the accuracy rate of state estimation to power grid by PMU.PMU installing system, equipment and computer readable storage medium also solve the problems, such as relevant art in a kind of power grid provided by the present application.
Description
Technical field
This application involves electrical power system wide-area measurement technology fields, more specifically to the placement side PMU in a kind of power grid
Method, system, equipment and computer media.
Background technique
As wide area Monitoring and control system (wide area measurement system, WAMS) is in electric system
Development, the energy management mode of power grid also gradually change.State estimation is that power grid energy manages vital front end ring
Section.Tradition dependent on RTU state estimation can not measurement node voltage magnitude and phase angle, and the PMU (Phasor based on WAMS
Measurement Unit, i.e. synchronous phasor measuring device) target voltage magnitude when providing band for Power system state estimation
With phase angle measurements so that state estimation has higher precision.
However, the estimated result for carrying out state estimation to power grid is influenced by setting of the PMU in power grid, PMU
When setting difference in power grid, the accuracy rate of finally obtained estimated result is not identical, so that by PMU to power grid
The accuracy rate for carrying out state estimation is difficult to ensure.
In conclusion how to guarantee that the accuracy rate for carrying out state estimation to power grid by PMU is current those skilled in the art
Member's urgent problem to be solved.
Summary of the invention
The purpose of the application is to provide PMU allocation method in a kind of power grid, can solve how to guarantee to a certain extent
The technical issues of accuracy rate of state estimation is carried out to power grid by PMU.Present invention also provides PMU placement systems in a kind of power grid
System, equipment and computer readable storage medium.
To achieve the goals above, the application provides the following technical solutions:
PMU allocation method in a kind of power grid, comprising:
Obtain the original measuring value obtained after measuring to each measuring node in the power grid；
Sensitivity Analysis Method based on state estimation determines each measuring node to institute by the original measuring value
State the weighing factor of the state estimation result of power grid；
Placement result of the PMU in each measuring node is determined according to the weighing factor；
After acquisition disposes the PMU in the power grid according to the placement result, the measurement result of the PMU acquisition；
Performance evaluation is carried out to the power grid based on the measurement result.
Preferably, the Sensitivity Analysis Method based on state estimation is determined each described by the original measuring value
Weighing factor of the measuring node to the state estimation result of the power grid, comprising:
It modifies to the original measuring value, obtains modification measuring value；
State estimation is carried out to the power grid according to the original measuring value, obtains reset condition estimated result；
State estimation is carried out to the power grid according to the modification measuring value, obtains modification state estimation result；
Each original measuring value is determined based on the reset condition estimated result and the modification state estimation result
Information physical influence factor value；
The weighing factor of each measuring node is determined based on the physical influence factor values.
Preferably, the weighing factor that each measuring node is determined based on the physical influence factor values,
Include:
Each physical influence factor values are combined into information physical impact factor matrix；
For each measuring node, by shape relevant to the measuring node in the information physical influence factor value
State variable value sets 1, remaining state variable value sets 0, obtains the associated vector of the measuring node；
By weighing factor operational formula, institute is determined based on the information physical impact factor matrix and the associated vector
State the weighing factor of measuring node；
The weighing factor operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F table
Show the information physical impact factor matrix；ljIndicate the associated vector of j-th of measuring node.
Preferably, it is described determined based on the reset condition estimated result and the modification state estimation result it is each described
The information physical influence factor value of original measuring value, comprising:
By information physical impact factor operational formula, estimated based on the reset condition estimated result and the modification state
Meter result determines the information physical influence factor value of each original measuring value；
The information physical impact factor operational formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th it is described original
The reset condition estimated result of measuring value；Indicate the modification state estimation result of i-th of original measuring value；
εiIndicate the modification ratio value of i-th of original measuring value；M indicates the total number of the original measuring value.
Preferably, described by information physical impact factor operational formula, it is based on the reset condition estimated result and institute
It states before modifying the information physical influence factor value that state estimation result determines each original measuring value, comprising:
The modification ratio value is determined according to modification scale operation formula；
The modification scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
Preferably, it is described according to the weighing factor determine placement of the PMU in each measuring node as a result,
Include:
According to weighing factor value putting in order from high to low, based on the weighing factor to each measuring node into
Row sequence, obtains ranking results；
Principle is disposed according to the PMU for the tail that sorts after the head that first sorts, determines the placement result based on the ranking results.
It is preferably, described that performance evaluation is carried out to the power grid based on the measurement result, comprising:
State estimation is carried out to the power grid based on the measurement result, obtains state estimation result；
Performance evaluation is carried out to the power grid based on the state estimation result.
PMU installing system in a kind of power grid, comprising:
First obtains module, for obtain each measuring node in the power grid is measured after obtained original vol
Measured value；
First determining module is determined each for the Sensitivity Analysis Method based on state estimation by the original measuring value
Weighing factor of a measuring node to the state estimation result of the power grid；
Second determining module, for determining peace of the PMU in each measuring node according to the weighing factor
Set result；
Second obtains module, described after disposing the PMU in the power grid according to the placement result for acquisition
The measurement result of PMU acquisition；
First analysis module, for carrying out performance evaluation to the power grid based on the measurement result.
PMU arranging apparatus in a kind of power grid, comprising:
Memory, for storing computer program；
Processor realizes the step of PMU allocation method in as above any power grid when for executing the computer program
Suddenly.
A kind of computer readable storage medium is stored with computer program in the computer readable storage medium, described
The step of PMU allocation method in as above any power grid is realized when computer program is executed by processor.
PMU allocation method in a kind of power grid provided by the present application, acquisition measure each measuring node in power grid
The original measuring value obtained afterwards；Sensitivity Analysis Method based on state estimation determines each measuring node by original measuring value
To the weighing factor of the state estimation result of power grid；Placement result of the PMU in each measuring node is determined according to weighing factor；
It obtains after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition；Based on measurement result to power grid progressive
It can analysis.PMU allocation method in a kind of power grid provided by the present application calculates each measuring node to Power Network Status Estimation result
Weighing factor, and placement of the PMU in each measuring node determined according to weighing factor as a result, make the placement result of PMU with
The weighing factor of each measuring node is associated, and compared with the technology of existing random placement PMU, PMU acquisition can be improved
Measurement result can guarantee the standard for carrying out state estimation to power grid by PMU to the influence power of Power Network Status Estimation result
True rate.PMU installing system, equipment and computer readable storage medium also solve corresponding skill in a kind of power grid provided by the present application
Art problem.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of PMU allocation method in a kind of power grid provided by the embodiments of the present application；
Fig. 2 is the determination process flow diagram flow chart of weighing factor in the application；
Fig. 3 is the structural schematic diagram of PMU installing system in a kind of power grid provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application；
Fig. 5 is another structural schematic diagram of PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Referring to Fig. 1, Fig. 1 is the flow chart of PMU allocation method in a kind of power grid provided by the embodiments of the present application.
PMU allocation method in a kind of power grid provided by the embodiments of the present application, may comprise steps of:
Step S11: the original measuring value obtained after measuring to each measuring node in power grid is obtained.
In practical application, the original measurement obtained after measuring to each measuring node in power grid can be first obtained
Value, the quantity of measuring node can be determine according to actual needs；And original measuring value can be for obtained in history measurement process
Measuring value etc..The type of raw information measuring value can determine according to the device type measured to measuring node, such as
When measuring device is voltage measuring apparatus, the type of raw information measuring value is just voltage, and measuring device is current measure device
When, the type of raw information measuring value is just electric current etc..
Step S12: the Sensitivity Analysis Method based on state estimation determines each measuring node to electricity by original measuring value
The weighing factor of the state estimation result of net.
In practical application, since the measuring value of each measuring node is different to the weighing factor of Power Network Status Estimation result,
Than if any the measuring value of measuring node be affected to Power Network Status Estimation result, the measuring value of some measuring nodes is to electricity
The influence of net state estimated result is smaller namely the measuring value of each measuring node will affect Power Network Status Estimation as a result, influencing
The accuracy of Power Network Status Estimation result, then, it, can be with base in order to guarantee the accuracy of Power Network Status Estimation result as far as possible
In the Sensitivity Analysis Method of state estimation, determine each measuring node to the state estimation result of power grid by original measuring value
Weighing factor determines placement result of the PMU in each measuring node according to weighing factor later.
Step S13: placement result of the PMU in each measuring node is determined according to weighing factor.
It, can be according to when determining placement result of the PMU in each measuring node according to weighing factor in practical application
Preferentially dispose the principle of PMU in the high measuring node of weighing factor, determine placement of the PMU in each measuring node as a result,
It is placed in PMU is limited in the high measuring node of weighing factor.Specifically, determining PMU in each survey according to weighing factor
It, can be according to weighing factor value putting in order from high to low, based on weighing factor to each when measuring the placement result in node
Measuring node is ranked up, and obtains ranking results；Principle is disposed according to the PMU for the tail that sorts after the head that first sorts, is based on ranking results
Determine placement result.
Step S14: obtaining after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition.
Step S15: performance evaluation is carried out to power grid based on measurement result.
In practical application, determining that PMU after the placement result in each measurement, can obtain and press according to weighing factor
According to placement result to PMU is disposed in power grid after, the measurement result of PMU acquisition, and performance point is carried out to power grid based on measurement result
Analysis.In concrete application scene, based on measurement result to power grid carry out performance evaluation when, can based on measurement result to power grid into
Row state estimation, obtains state estimation result；Performance evaluation is carried out to power grid based on state estimation result.
PMU allocation method in a kind of power grid provided by the present application, acquisition measure each measuring node in power grid
The original measuring value obtained afterwards；Sensitivity Analysis Method based on state estimation determines each measuring node by original measuring value
To the weighing factor of the state estimation result of power grid；Placement result of the PMU in each measuring node is determined according to weighing factor；
It obtains after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition；Based on measurement result to power grid progressive
It can analysis.PMU allocation method in a kind of power grid provided by the present application calculates each measuring node to Power Network Status Estimation result
Weighing factor, and placement of the PMU in each measuring node determined according to weighing factor as a result, make the placement result of PMU with
The weighing factor of each measuring node is associated, and compared with the technology of existing random placement PMU, PMU acquisition can be improved
Measurement result can guarantee the standard for carrying out state estimation to power grid by PMU to the influence power of Power Network Status Estimation result
True rate.
Referring to Fig. 2, Fig. 2 is the determination process flow diagram flow chart of weighing factor in the application.
PMU allocation method in a kind of power grid provided by the present application, step S12: the Sensitivity Analysis Method based on state estimation,
Determine that each measuring node can be with to the process of the weighing factor of the state estimation result of power grid by original measuring value specifically:
Step S121: modifying to original measuring value, obtains modification measuring value.
Step S122: state estimation is carried out to power grid according to original measuring value, obtains reset condition estimated result.
Step S123: state estimation is carried out to power grid according to modification measuring value, obtains modification state estimation result.
Step S124: the letter of each original measuring value is determined based on reset condition estimated result and modification state estimation result
Cease physical influence factor values.
In practical application, each original measuring value is being determined based on reset condition estimated result and modification state estimation result
Information physical influence factor value when, can by information physical impact factor operational formula, be based on reset condition estimated result
And modification state estimation result determines the information physical influence factor value of each original measuring value；Information physical impact factor operation
Formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th of original measuring value
Reset condition estimated result；Indicate the modification state estimation result of i-th of original measuring value；εiIndicate i-th of original measurement
The modification ratio value of value, value can be less than or equal to 1%；M indicates the total number of original measuring value.
In concrete application scene, by information physical impact factor operational formula, based on reset condition estimated result and
It, can also be according to modification ratio before modification state estimation result determines the information physical influence factor value of each original measuring value
Operational formula determines modification ratio value；Modifying scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
Step S125: the weighing factor of each measuring node is determined based on physical influence factor values.
It, can will be each when determining the weighing factor of each measuring node based on physical influence factor values in practical application
A physical influence factor values are combined into information physical impact factor matrix；For each measuring node, by information physical influence because
State variable value relevant to measuring node sets 1 in subvalue, remaining state variable value sets 0, obtains the associated vector of measuring node；
By weighing factor operational formula, determine that the influence of measuring node is weighed based on information physical impact factor matrix and associated vector
Weight；Weighing factor operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F indicates information object
Manage impact factor matrix；ljIndicate the associated vector of j-th of measuring node.It should be pointed out that the associated vector, original of measuring node
State estimation result, modification state estimation result, information physical influence factor value are the vector of n*1 dimension, and n is by state variable
Quantity.
Present invention also provides PMU installing systems in a kind of power grid, with a kind of power grid provided by the embodiments of the present application
The correspondence effect that middle PMU allocation method has.Referring to Fig. 3, Fig. 3 is PMU peace in a kind of power grid provided by the embodiments of the present application
Set the structural schematic diagram of system.
PMU installing system in a kind of power grid provided by the embodiments of the present application may include:
First obtains module 101, for obtain each measuring node in power grid is measured after obtained original vol
Measured value；
First determining module 102 is determined each for the Sensitivity Analysis Method based on state estimation by original measuring value
Weighing factor of the measuring node to the state estimation result of power grid；
Second determining module 103, for determining placement result of the PMU in each measuring node according to weighing factor；
Second obtains module 104, after obtaining according to disposing result to dispose PMU in power grid, the measurement knot of PMU acquisition
Fruit；
First analysis module 105, for carrying out performance evaluation to power grid based on measurement result.
PMU installing system in a kind of power grid provided by the embodiments of the present application, the first determining module may include:
First modification submodule obtains modification measuring value for modifying to original measuring value；
First estimation submodule obtains reset condition estimation for carrying out state estimation to power grid according to original measuring value
As a result；
Second estimation submodule obtains modification state estimation for carrying out state estimation to power grid according to modification measuring value
As a result；
First determines submodule, each original for being determined based on reset condition estimated result and modification state estimation result
The information physical influence factor value of measuring value；
Second determines submodule, for determining the weighing factor of each measuring node based on physical influence factor values.
PMU installing system in a kind of power grid provided by the embodiments of the present application, second determines that submodule may include:
First combination submodule, for each physical influence factor values to be combined into information physical impact factor matrix；
First transform subblock, for for each measuring node, by information physical influence factor value with measuring node
Relevant state variable value sets 1, remaining state variable value sets 0, obtains the associated vector of measuring node；
Third determines submodule, for being based on information physical impact factor matrix and phase by weighing factor operational formula
Close the weighing factor that vector determines measuring node；
Weighing factor operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F indicates information object
Manage impact factor matrix；ljIndicate the associated vector of j-th of measuring node.
PMU installing system in a kind of power grid provided by the embodiments of the present application, first determines that submodule may include:
First determination unit, for by information physical impact factor operational formula, based on reset condition estimated result and
Modification state estimation result determines the information physical influence factor value of each original measuring value；The operation of information physical impact factor is public
Formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th of original measuring value
Reset condition estimated result；Indicate the modification state estimation result of i-th of original measuring value；εiIndicate i-th of original measurement
The modification ratio value of value；M indicates the total number of original measuring value.
PMU installing system in a kind of power grid provided by the embodiments of the present application, further includes:
First modification unit is based on original shape for the first determination unit by information physical impact factor operational formula
Before the information physical influence factor value that state estimated result and modification state estimation result determine each original measuring value, according to repairing
The operational formula that rescales determines modification ratio value；Modifying scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
PMU installing system in a kind of power grid provided by the embodiments of the present application, the second determining module may include:
First sequencing unit, for the putting in order from high to low according to weighing factor value, based on weighing factor to each
Measuring node is ranked up, and obtains ranking results；
Second determination unit is determined based on ranking results and is pacified for disposing principle according to the PMU for the tail that sorts after the head that first sorts
Set result.
PMU installing system in a kind of power grid provided by the embodiments of the present application, the first analysis module may include:
First estimation unit obtains state estimation result for carrying out state estimation to power grid based on measurement result；
First analytical unit, for carrying out performance evaluation to power grid based on state estimation result.
Present invention also provides PMU arranging apparatus and computer readable storage mediums in a kind of power grid, all have this Shen
It please the correspondence effect that has of PMU allocation method in a kind of power grid for providing of embodiment.Referring to Fig. 4, Fig. 4 is the embodiment of the present application
The structural schematic diagram of PMU arranging apparatus in a kind of power grid provided.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program:
Obtain the original measuring value obtained after measuring to each measuring node in power grid；
Sensitivity Analysis Method based on state estimation determines each measuring node to the state of power grid by original measuring value
The weighing factor of estimated result；
Placement result of the PMU in each measuring node is determined according to weighing factor；
It obtains after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition；
Performance evaluation is carried out to power grid based on measurement result.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Be stored with computer program in device 201, processor 202 realizes following steps when executing computer program: to original measuring value into
Row modification obtains modification measuring value；State estimation is carried out to power grid according to original measuring value, obtains reset condition estimated result；
State estimation is carried out to power grid according to modification measuring value, obtains modification state estimation result；Based on reset condition estimated result and
Modification state estimation result determines the information physical influence factor value of each original measuring value；It is determined based on physical influence factor values
The weighing factor of each measuring node.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program: by each physical influence
Factor values are combined into information physical impact factor matrix；For each measuring node, by information physical influence factor value with survey
The relevant state variable value of amount node sets 1, remaining state variable value sets 0, obtains the associated vector of measuring node；By influencing to weigh
Weight operational formula, the weighing factor of measuring node is determined based on information physical impact factor matrix and associated vector；Weighing factor
Operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F indicates information object
Manage impact factor matrix；ljIndicate the associated vector of j-th of measuring node.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program: by information physical shadow
Factor operational formula is rung, the information of each original measuring value is determined based on reset condition estimated result and modification state estimation result
Physical influence factor values；Information physical impact factor operational formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th of original measuring value
Reset condition estimated result；Indicate the modification state estimation result of i-th of original measuring value；εiIndicate i-th of original measurement
The modification ratio value of value；M indicates the total number of original measuring value.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program: by information physical shadow
Factor operational formula is rung, the information of each original measuring value is determined based on reset condition estimated result and modification state estimation result
Before physical influence factor values, modification ratio value is determined according to modification scale operation formula；Modifying scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program: according to weighing factor value
Putting in order from high to low, is ranked up each measuring node based on weighing factor, obtains ranking results；According to first sorting
The PMU of sequence tail disposes principle after head, determines placement result based on ranking results.
PMU arranging apparatus in a kind of power grid provided by the embodiments of the present application, including memory 201 and processor 202, storage
Computer program is stored in device 201, processor 202 realizes following steps when executing computer program: based on measurement result pair
Power grid carries out state estimation, obtains state estimation result；Performance evaluation is carried out to power grid based on state estimation result.
Referring to Fig. 5, can also include: in PMU arranging apparatus in another kind power grid provided by the embodiments of the present application and locate
The input port 203 that device 202 connects is managed, is used for transmission the extraneous order inputted to processor 202；It is connect with processor 202
Display unit 204, the processing result for video-stream processor 202 is to the external world；The communication module 205 connecting with processor 202 is used
In the communication for realizing PMU arranging apparatus and the external world in power grid.Display unit 204 can make to show for display panel, laser scanning
Device etc.；Communication mode used by communication module 205 includes but is not limited to mobile high definition chained technology (HML), general serial
Bus (USB), is wirelessly connected high-definition media interface (HDMI): adopting wireless fidelity technology (WiFi), Bluetooth Communication Technology, low function
Consume Bluetooth Communication Technology, the communication technology based on IEEE802.11s.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor:
Obtain the original measuring value obtained after measuring to each measuring node in power grid；
Sensitivity Analysis Method based on state estimation determines each measuring node to the state of power grid by original measuring value
The weighing factor of estimated result；
Placement result of the PMU in each measuring node is determined according to weighing factor；
It obtains after disposing PMU in power grid according to placement result, the measurement result of PMU acquisition；
Performance evaluation is carried out to power grid based on measurement result.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: modifying to original measuring value, obtain modification amount
Measured value；State estimation is carried out to power grid according to original measuring value, obtains reset condition estimated result；According to modification measuring value to electricity
Net carries out state estimation, obtains modification state estimation result；It is true based on reset condition estimated result and modification state estimation result
The information physical influence factor value of fixed each original measuring value；The influence of each measuring node is determined based on physical influence factor values
Weight.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: each physical influence factor values are combined into information
Physical influence factor matrix；For each measuring node, by state relevant to measuring node in information physical influence factor value
Variate-value sets 1, remaining state variable value sets 0, obtains the associated vector of measuring node；By weighing factor operational formula, it is based on
Information physical impact factor matrix and associated vector determine the weighing factor of measuring node；Weighing factor operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F indicates information object
Manage impact factor matrix；ljIndicate the associated vector of j-th of measuring node.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: passing through information physical impact factor operational formula, base
The information physical influence factor value of each original measuring value is determined in reset condition estimated result and modification state estimation result；Letter
Ceasing physical influence factor operational formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th of original measuring value
Reset condition estimated result；Indicate the modification state estimation result of i-th of original measuring value；εiIndicate i-th of original measurement
The modification ratio value of value；M indicates the total number of original measuring value.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: passing through information physical impact factor operational formula, base
In reset condition estimated result and modification state estimation result determine each original measuring value information physical influence factor value it
Before, modification ratio value is determined according to modification scale operation formula；Modifying scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: suitable according to the arrangement of weighing factor value from high to low
Sequence is ranked up each measuring node based on weighing factor, obtains ranking results；According to the PMU for the tail that sorts after the head that first sorts
Principle is disposed, determines placement result based on ranking results.
A kind of computer readable storage medium provided by the embodiments of the present application is stored with meter in computer readable storage medium
Calculation machine program, realizes following steps when computer program is executed by processor: state estimation is carried out to power grid based on measurement result,
Obtain state estimation result；Performance evaluation is carried out to power grid based on state estimation result.
Computer readable storage medium involved in the application includes random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
Any other form of storage medium well known to interior.
Phase in PMU installing system, equipment and computer readable storage medium in a kind of power grid provided by the embodiments of the present application
The explanation for closing part refers in a kind of power grid provided by the embodiments of the present application in PMU allocation method corresponding part specifically
Bright, details are not described herein.In addition, in above-mentioned technical proposal provided by the embodiments of the present application with correspond to technical solution in the prior art
The consistent part of realization principle is simultaneously unspecified, in order to avoid excessively repeat.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the application.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and the general principles defined herein can
Without departing from the spirit or scope of the application, to realize in other embodiments.Therefore, the application will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with the principles and novel features disclosed in this article widest
Range.
Claims (10)
1. PMU allocation method in a kind of power grid characterized by comprising
Obtain the original measuring value obtained after measuring to each measuring node in the power grid；
Sensitivity Analysis Method based on state estimation determines each measuring node to the electricity by the original measuring value
The weighing factor of the state estimation result of net；
Placement result of the PMU in each measuring node is determined according to the weighing factor；
After acquisition disposes the PMU in the power grid according to the placement result, the measurement result of the PMU acquisition；
Performance evaluation is carried out to the power grid based on the measurement result.
2. the method according to claim 1, wherein the Sensitivity Analysis Method based on state estimation, passes through
The original measuring value determines each measuring node to the weighing factor of the state estimation result of the power grid, comprising:
It modifies to the original measuring value, obtains modification measuring value；
State estimation is carried out to the power grid according to the original measuring value, obtains reset condition estimated result；
State estimation is carried out to the power grid according to the modification measuring value, obtains modification state estimation result；
The letter of each original measuring value is determined based on the reset condition estimated result and the modification state estimation result
Cease physical influence factor values；
The weighing factor of each measuring node is determined based on the physical influence factor values.
3. according to the method described in claim 2, it is characterized in that, described determine each institute based on the physical influence factor values
State the weighing factor of measuring node, comprising:
Each physical influence factor values are combined into information physical impact factor matrix；
For each measuring node, state relevant to the measuring node in the information physical influence factor value is become
Magnitude sets 1, remaining state variable value sets 0, obtains the associated vector of the measuring node；
By weighing factor operational formula, the survey is determined based on the information physical impact factor matrix and the associated vector
Measure the weighing factor of node；
The weighing factor operational formula includes:
Wj=| | F × lj||2；
Wherein, WjIndicate the weighing factor of j-th of measuring node；||·||2Indicate two norms of vector；F indicates institute
State information physical impact factor matrix；ljIndicate the associated vector of j-th of measuring node.
4. according to the method described in claim 3, it is characterized in that, described based on the reset condition estimated result and described repair
Change the information physical influence factor value that state estimation result determines each original measuring value, comprising:
By information physical impact factor operational formula, it is based on the reset condition estimated result and the modification state estimation knot
Fruit determines the information physical influence factor value of each original measuring value；
The information physical impact factor operational formula includes:
Wherein, fiIndicate the information physical influence factor value of i-th of original measuring value；xiIndicate i-th of original measurement
The reset condition estimated result of value；Indicate the modification state estimation result of i-th of original measuring value；εiTable
Show the modification ratio value of i-th of original measuring value；M indicates the total number of the original measuring value.
5. according to the method described in claim 4, it is characterized in that, described pass through information physical impact factor operational formula, base
The information of each original measuring value is determined in the reset condition estimated result and the modification state estimation result
Before physical influence factor values, comprising:
The modification ratio value is determined according to modification scale operation formula；
The modification scale operation formula includes:
Wherein, miIndicate i-th of original measuring value；m′iIndicate i-th of modification measuring value.
6. method according to any one of claims 1 to 5, which is characterized in that described to determine institute according to the weighing factor
State placement result of the PMU in each measuring node, comprising:
According to weighing factor value putting in order from high to low, each measuring node is arranged based on the weighing factor
Sequence obtains ranking results；
Principle is disposed according to the PMU for the tail that sorts after the head that first sorts, determines the placement result based on the ranking results.
7. according to the method described in claim 6, it is characterized in that, described be based on the measurement result to the power grid progressive
It can analyze, comprising:
State estimation is carried out to the power grid based on the measurement result, obtains state estimation result；
Performance evaluation is carried out to the power grid based on the state estimation result.
8. PMU installing system in a kind of power grid characterized by comprising
First obtains module, for obtain each measuring node in the power grid is measured after obtained original measurement
Value；
First determining module determines each institute by the original measuring value for the Sensitivity Analysis Method based on state estimation
Measuring node is stated to the weighing factor of the state estimation result of the power grid；
Second determining module, for determining placement knot of the PMU in each measuring node according to the weighing factor
Fruit；
Second obtains module, and after disposing the PMU in the power grid according to the placement result for acquisition, the PMU is adopted
The measurement result of collection；
First analysis module, for carrying out performance evaluation to the power grid based on the measurement result.
9. PMU arranging apparatus in a kind of power grid characterized by comprising
Memory, for storing computer program；
Processor realizes that PMU is disposed in power grid as described in any one of claim 1 to 7 when for executing the computer program
The step of method.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium
Program realizes the placement side PMU in power grid as described in any one of claim 1 to 7 when the computer program is executed by processor
The step of method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667321.XA CN110380413B (en) | 2019-07-23 | 2019-07-23 | PMU (phasor measurement Unit) arranging method, system, equipment and computer medium in power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667321.XA CN110380413B (en) | 2019-07-23 | 2019-07-23 | PMU (phasor measurement Unit) arranging method, system, equipment and computer medium in power grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110380413A true CN110380413A (en) | 2019-10-25 |
| CN110380413B CN110380413B (en) | 2021-04-23 |
Family
ID=68255104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910667321.XA Active CN110380413B (en) | 2019-07-23 | 2019-07-23 | PMU (phasor measurement Unit) arranging method, system, equipment and computer medium in power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110380413B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075741A (en) * | 2007-05-15 | 2007-11-21 | 浙江大学 | Method for evaluating non-linear dynamic state with loading voltage characteristics |
| CN101651343A (en) * | 2009-09-09 | 2010-02-17 | 国家电网公司 | Method and system for checking electric power system model based on hybrid dynamic simulation |
| CN103972884A (en) * | 2014-04-24 | 2014-08-06 | 西南交通大学 | Electric system state estimation method |
| CN108717151A (en) * | 2018-05-31 | 2018-10-30 | 佛山市梅雨科技有限公司 | A kind of power grid fault detection system |
| CN109217339A (en) * | 2018-10-25 | 2019-01-15 | 国网天津市电力公司 | A kind of construction method in the Static Voltage Security domain based on PMU configuration |
-
2019
- 2019-07-23 CN CN201910667321.XA patent/CN110380413B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075741A (en) * | 2007-05-15 | 2007-11-21 | 浙江大学 | Method for evaluating non-linear dynamic state with loading voltage characteristics |
| CN101651343A (en) * | 2009-09-09 | 2010-02-17 | 国家电网公司 | Method and system for checking electric power system model based on hybrid dynamic simulation |
| CN103972884A (en) * | 2014-04-24 | 2014-08-06 | 西南交通大学 | Electric system state estimation method |
| CN108717151A (en) * | 2018-05-31 | 2018-10-30 | 佛山市梅雨科技有限公司 | A kind of power grid fault detection system |
| CN109217339A (en) * | 2018-10-25 | 2019-01-15 | 国网天津市电力公司 | A kind of construction method in the Static Voltage Security domain based on PMU configuration |
Non-Patent Citations (6)
| Title |
|---|
| M. PRIYADHARSHINI等: "Probabilistic approach based optimal placement of phasor measurement units via the estimation of dynamic vulnerability assessment", 《2014 INTERNATIONAL CONFERENCE ON GREEN COMPUTING COMMUNICATION AND ELECTRICAL ENGINEERING (ICGCCEE)》 * |
| RAJNISH KUMAR等: "Optimal placement of PMUs with limited number of channels", 《2011 NORTH AMERICAN POWER SYMPOSIUM》 * |
| 吴星等: "基于WAMS/SCADA数据兼容和改进FCM聚类算法的PMU最优配置", 《电网技术》 * |
| 徐岩等: "基于改进自适应遗传算法的PMU优化配置", 《电力系统保护与控制》 * |
| 杨毅: "配电网中PMU优化配置方案研究", 《中国优秀硕士学位论文全文数据库》 * |
| 陈立等: "电网谐波状态估计量测点的优化配置方法", 《电力科学与技术学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110380413B (en) | 2021-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106338705B (en) | A kind of method and apparatus of the verification error for three-phase electric energy metering device | |
| CN105807226B (en) | Lithium ion battery SOC Forecasting Methodologies and device based on equivalent-circuit model | |
| CN101718849B (en) | Automatic calibration system of charge/discharge detection instrument of storage battery | |
| US10281529B2 (en) | Apparatus for measuring cell internal resistance online and measurement method therefor | |
| CN103018680B (en) | Metering method and metering device of battery level and battery supply set | |
| CN103901388B (en) | Parallel detection termination and detection method | |
| CN103149546A (en) | Portable electric energy measuring terminal comprehensive calibration instrument on site | |
| CN109991545B (en) | Battery pack electric quantity detection method and device and terminal equipment | |
| CN109613440A (en) | Stage division, device, equipment and the storage medium of battery | |
| CN103424712A (en) | Method for measuring residual capacity of battery in online manner on basis of particle swarm optimization | |
| CN112561030A (en) | Method and device for determining insulation state of mutual inductor based on neural network | |
| CN114660531B (en) | Detection method, system and device based on ammeter measurement error compensation | |
| CN109447506A (en) | A kind of power quality datum-plane evaluation method and system | |
| CN103293424A (en) | Data center power usage efficiency (PUE) determination method | |
| CN109596915A (en) | A kind of remote calibration system and method for electric automobile charging pile | |
| CN110380413A (en) | PMU allocation method, system, equipment and computer media in a kind of power grid | |
| US20170254853A1 (en) | Information processing device, information processing method, and recording medium | |
| CN104199744B (en) | A kind of supercomputer application performance stability judging method and device | |
| CN107768754B (en) | Lithium ion battery voltage selects the method and its application of capacity | |
| CN204287445U (en) | For the cell degradation detector of battery cell | |
| CN108595381A (en) | Health status evaluation method, device and readable storage medium storing program for executing | |
| CN109061498A (en) | A kind of battery dump energy metering chip and metering method | |
| CN204330998U (en) | For cell degradation detector and the cell degradation detection system of electric battery | |
| CN104483654B (en) | A kind of intelligent electric energy meter measures the integrated evaluating method and its system of positive and negative deviation | |
| CN104655926A (en) | Embedded terminal capable of monitoring electricity utilization information and electric charge data and monitoring method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |