CN106786498A - A kind of main website substation data cooperative identification method and its device - Google Patents
A kind of main website substation data cooperative identification method and its device Download PDFInfo
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- CN106786498A CN106786498A CN201610993724.XA CN201610993724A CN106786498A CN 106786498 A CN106786498 A CN 106786498A CN 201610993724 A CN201610993724 A CN 201610993724A CN 106786498 A CN106786498 A CN 106786498A
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- 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
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- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- 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
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- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a kind of main website substation data cooperative identification method and its device, the method includes：Obtain the cooperative identification of substation data, identification substation data and transformer station of main website；The device of the method includes：Data read module, data processing module, data memory module, substation data identification module and transformer station of the main website cooperative identification module being sequentially connected.The method that the present invention is provided is verified and processed using the data of redundancy in transformer station to initial data, realize the pre- management and control of data when main website is accessed to the identification of the transformer substation end of error in data and transformer station, the substation data that ensure that access is accurate, believable, the transformer station for accessing main website can use immediately, improve the information sharing level between main website and transformer station.
Description
Technical field
The invention belongs to dispatching automation of electric power systems field, in particular to a kind of main website-substation data collaboration is distinguished
Knowledge method and its device.
Background technology
In traditional transformer station because electrical equipment damage, protection supervisory equipment, network communication and transmission be not smooth, network intrusions,
The many factors such as channel disturbance produce data skew and lose.Automatic monitoring system of transformer substation is gathered by bay device and become
The real-time traffic information in power station, such as analog quantity, quantity of state, electricity, and data are simply pre-processed, in man-machine interface
It is shown.To Telemetering Data Processing, be typically limited to out-of-limit management, each analog quantity is set respectively the upper limit, the upper limit and under
Limit, lower limit two-stage.Then judge out-of-limit situation, corresponding record, line flicker of going forward side by side alarm are produced if out-of-limit or recovery
The treatment such as prompting and preservation.To remote signalling data treatment, displacement is determined whether, corresponding displacement note is then produced if displacement
Record, the state tradition SCADA system of line flicker alarm of going forward side by side display displacement remote signalling is sent on bay device to receive
Remote measure and communication message man-machine interface show, the correctness to measuring value is not verified.Cannot ensure the accurate of data
Property, and then other senior applications generations have a strong impact on to intelligent substation unified platform.
As regulation and control integration is deepened to basic model and data degree of dependence, intelligent substation is accessing regulation and control main website
When, due to not carrying out the pre- verification of model and data in time, transformer station model and data it is inaccurate to monitor in real time and senior
Had a strong impact on using bringing, be mainly shown as Topology Error, parameter error and measure mistake, cause monitor in real time and it is senior should
With unavailable or insincere, operation of power networks state and control can not be made accurate judgment to power grid operation personnel.Therefore need
A kind of technical scheme is provided to overcome the deficiencies in the prior art.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of main website-substation data cooperative identification method and its dress
Put.
A kind of main website-substation data cooperative identification method, it is characterised in that methods described includes：
I, acquisition substation data；
II, substation data identification；
III, the cooperative identification of main website-transformer station.
Further, the substation data of the step I includes：Model data and metric data；The model data bag
Include plant stand, bus, disconnecting link, breaker, alternating current circuit end points, Transformer Winding, generator, load, capacity reactance device, series connection benefit
Repay device and transverter；The metric data includes three-phase voltage, three phases active power, three phase reactive power, three-phase current, open circuit
The remote signalling state of device and disconnecting link.
Further, the measurement includes that remote-terminal unit RTU is measured and synchronous phasor measuring device PMU is measured.
Further, the substation data identification of the step II includes model checking and measures to verify.
Further, the model checking includes closing the correctness verification of the hierarchical relationship of grid equipment and Topology connection
The correctness verification of system, the correctness verification includes：The area attribute verification of plant stand, the plant stand verification of grid equipment, power network
Annexation verification, the voltage class attribute verification of grid equipment, transformer between the verification of equipment connection period, grid equipment
The transformer attribute verification of winding is verified with the exchange line segment attribute for exchanging line segment end points.
Further, it is described to measure verification including distant to three-phase voltage, three phases active power, three phase reactive power and switch
The correctness verification of letter, the correctness verification includes：The verification of bus power balance, busbar voltage verification and switch remote signalling school
Test.
Further, the bus power balance verification includes：It is calculated as follows bus power amount of unbalance Y：
Wherein, ZiTo calculate the measurement observation of the grid equipment i of parent node.
Further, the busbar voltage verification includes：
1) it is calculated as follows the voltage estimate of A phases, B phases and C three-phase bus：
With
2) double-bus of parallel running or the voltage estimate of many buses are calculated as follows：
Wherein：WithThe phase voltage measuring value and estimate of bus i are represented respectively； For the phase voltage of bus i measures weight, wiIt is the busbar voltage weight of parallel running.
Further, the switch remote signalling verification includes：PMU current measurements according to switch are to the folding condition that switchs
Verification includes：
1) whether be more than according to the current amplitude for flowing through certain switch has currentless judgement threshold value ε to determine closing for switch
Close, the size of the current amplitude according to switching time t sets up the folding condition undetermined of switch
2) basisOn off state calculate each switching node Injection Current sum determine switch state or switch
Current measurement data property；
3) switch of mistake is measured with the electric current correcting current of other nodes or switch, and according to revised current measurement
Set up new folding condition undeterminedAnd willWith the on off state of moment t-1Contrast, obtains the switch for conjugating.
Further, the cooperative identification of the main website-transformer station of the step III includes：
The transformer station being shown below accesses the verification of the looped network measurement parameters matching formed after main website：
Wherein Pu,XuThe respectively active measuring value and branch reactance parameters value of characteristic of loop branches.
Further, described device includes the data read module, data processing module, the data storage mould that are sequentially connected
Block, substation data identification module and main website-transformer station's cooperative identification module.
Further, the data read module, for the model service from transformer substation end and measurement service acquisition power transformation
The model data and metric data stood；
The data processing module, for the data for reading to be carried out classification treatment；
The data memory module, for data storage；
The substation data recognizes module, and transformer station's state is carried out for the model data and metric data to transformer station
Estimate, correctness is verified and corrected；
The main website-transformer station's cooperative identification module, the matching for substation data and main website data is verified, and is passed through
The coordination of main website and transformer station is calculated, and proofreads the identification result of transformer station.
With immediate prior art ratio, the present invention provide technical scheme have the advantages that：
Substation data identification of the invention utilizes single-phase active, the idle and voltage of the data RTU of redundancy in transformer station
Measure, and active and reactive power for more A phases, B phases and C phases, synchronous phasor measuring device PMU are measured and disconnecting link
Current measurement of breaker etc. comes from remote-terminal unit to equipment such as initial data circuit, transformer, load, generators
Single-phase active, idle and voltage measurement of RTU etc. is verified and processed, and realizes the transformer substation end identification of substation data mistake
The pre- management and control of data during main website is accessed with transformer station, it is ensured that the substation data of access is accurate, available, reaches transformer station
It is that can use to access main website, the information sharing level between lifting main website and transformer station.
Brief description of the drawings
Fig. 1 is flow chart of the present invention；
Fig. 2 is the particular content block diagram of substation data identification；
Fig. 3 is equipment therefor of the present invention.
Specific embodiment
The technical scheme that the present invention is provided is clearly and completely described below.
A kind of main website-substation data cooperative identification method, methods described includes following steps：Obtain transformer station's number
It is believed that breath；Substation data is recognized；Main website-transformer station's cooperative identification.
Step (1) the substation data information includes：Model data and metric data, and model data includes factory
Stand, bus, disconnecting link, breaker, alternating current circuit end points, Transformer Winding, generator, load, capacity reactance device, series compensation
The grid equipments such as device, transverter；Metric data include three-phase voltage, three phases active power, three phase reactive power, three-phase current,
The remote signalling state of breaker and disconnecting link；The collection of data can be divided into again remote-terminal unit (Remote Terminal Unit,
RTU) measure and synchronous phasor measuring device (Phasor Measurement Unit, PMU) is measured.
Substation data identification in the step (2) includes model checking and measures to verify.
Model checking is to carry out correctness verification to the hierarchical relationship and topological connection relation of grid equipment in methods described,
Main verification content includes：Whether correctly the area attribute of plant stand, whether correct, grid equipment connects the plant stand attribute of grid equipment
Whether contact number correct, whether have between grid equipment annexation, grid equipment voltage class attribute whether correct, transformation
Whether the transformer attribute of device winding is correct, whether the exchange line segment attribute of exchange line segment end points is correct etc..
It is that three-phase voltage, three phases active power, three phase reactive power, switch remote signalling are carried out that verification is measured in methods described
Correctness is verified, and main verification content includes：The verification of bus power balance, busbar voltage verification, switch remote signalling verification.
Bus power balance verification in methods described includes two types：(1) all disconnecting links and open circuit in station are assumed
Device closes position, forms the calculate node of switch complete closure, counts all grid equipment power sums, calculates the amount of unbalance of power；
(2) according to disconnecting link and the real-time folding condition of breaker, one or more calculate node is formed, is counted under each calculate node
Unbalanced power amount.
Bus power amount of unbalance Y is：
Wherein, ZiIt is i-th measurement observation of grid equipment under calculating parent node.
Busbar voltage verification in methods described includes：The distinctiveness school of single bus A phases, B phases and C phase voltage amplitudes
Test, then the voltage of single bus is estimated as：
For the double-bus or many buses of parallel running, the voltage estimate of single busbar can again be done weighting flat
, as the unified voltage estimate of each bus：
Wherein：WithThe phase voltage measuring value and estimate of i-th bus are represented respectively,Table
Show i-th three-phase voltage estimate of bus,It is the busbar voltage estimate of all parallel runnings,For
I-th the phase voltage of bus measures weight, wiIt is the busbar voltage weight of parallel running.
Switch remote signalling verification in methods described is to carry out school to the folding condition for switching according to the PMU current measurements of switch
Test, specific method is as follows：
A) set ε as switch has currentless judgement threshold value, if flowing through current amplitude of certain switch more than ε, open
Pass is closure, otherwise switch is to disconnect, and the size of the current amplitude according to switching time t sets up the folding undetermined of switch
State
B) basisOn off state, the Injection Current sum of each switching node is calculated, if at certain two side gusset of switch
Injection Current sum be not zero, then this switch status error or this switch current measurement be bad data；And if
The Injection Current sum of each node is zero, then the folding condition and current measurement of the switch being connected with node are correct；
C) for the switch of current measurement mistake, corrected with the electric current of other nodes or switch, and according to amendment
Current measurement afterwards sets up new folding condition undeterminedAnd willWith the on off state of moment t-1Contrast, is occurred
The switch of displacement.
Step (3) main website-transformer station's cooperative identification is mainly reflected in the matching of substation data and main website data
Verification, if forming ring network structure after access main website of transformer station, the matching verification that branch parameters and branch road are measured is just more important.
It is last to be weighted successive ignition coordination in main website-border main website of transformer station-transformer station's estimation respectively, verify data identification
Accuracy.
Looped network measurement parameters matching is verified：
Wherein Pu,XuThe respectively active measuring value and branch reactance parameters value of characteristic of loop branches, in the preferable feelings of trend constraint
Substantially Δ PX=0 should be met under condition, if Δ PX numerical value is very big, show device parameter and branch road measure it is serious mismatch, main website with
Estimation between transformer station occurs very big deviation.
A kind of main website-substation data cooperative identification device, it is characterised in that described device includes the data being sequentially connected
Read module, data processing module, data memory module, substation data identification module and main website-transformer station's cooperative identification mould
Block.
The data read module, for the model service from transformer substation end and the pattern number of measurement service acquisition transformer station
According to and metric data；
The data processing module, for the data for reading to be carried out classification treatment；
The data memory module, for data storage；
The substation data recognizes module, and transformer station's state is carried out for the model data and metric data to transformer station
Estimate, correctness is verified and corrected；
The main website-transformer station's cooperative identification module, the matching for substation data and main website data is verified, and is passed through
The coordination of main website and transformer station is calculated, and proofreads the identification result of transformer station.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations, to the greatest extent
Pipe has been described in detail with reference to above-described embodiment to the present invention, and those of ordinary skill in the art should be understood：Still
Specific embodiment of the invention can be modified or equivalent, and without departing from any of spirit and scope of the invention
Modification or equivalent, it all should cover in the middle of scope of the presently claimed invention.
Claims (12)
1. a kind of main website-substation data cooperative identification method, it is characterised in that methods described includes：
I, acquisition substation data；
II, substation data identification；
III, the cooperative identification of main website-transformer station.
2. a kind of main website-substation data cooperative identification method as claimed in claim 1, it is characterised in that the step I's
Substation data includes：Model data and metric data；The model data includes plant stand, bus, disconnecting link, breaker, exchange
Circuit end points, Transformer Winding, generator, load, capacity reactance device, series compensator and transverter；The metric data bag
Include the remote signalling state of three-phase voltage, three phases active power, three phase reactive power, three-phase current, breaker and disconnecting link.
3. a kind of main website-substation data cooperative identification method as claimed in claim 2, it is characterised in that the measurement bag
Remote-terminal unit RTU is included to measure and synchronous phasor measuring device PMU measurements.
4. a kind of main website-substation data cooperative identification method as claimed in claim 1, it is characterised in that the step II
Substation data identification include model checking and measure verification.
5. a kind of main website-substation data cooperative identification method as claimed in claim 4, it is characterised in that the model school
Test the correctness verification of correctness verification and topological connection relation including the hierarchical relationship to grid equipment, the correctness school
Test including：Plant stand area attribute verification, grid equipment plant stand verification, grid equipment connection period verification, grid equipment it
Between annexation verification, grid equipment voltage class attribute verification, Transformer Winding transformer attribute verification and exchange
The exchange line segment attribute verification of line segment end points.
6. a kind of main website-substation data cooperative identification method as claimed in claim 4, it is characterised in that the measurement school
Test including the correctness verification to three-phase voltage, three phases active power, three phase reactive power and switch remote signalling, the correctness school
Test including：The verification of bus power balance, busbar voltage verification and switch remote signalling verification.
7. a kind of main website-substation data cooperative identification method as claimed in claim 6, it is characterised in that the bus work(
The verification of rate balance includes：It is calculated as follows bus power amount of unbalance Y：
Wherein, ZiTo calculate the measurement observation of the grid equipment i of parent node.
8. a kind of main website-substation data cooperative identification method as claimed in claim 6, it is characterised in that the bus electricity
Pressure verification includes：
1) it is calculated as follows the voltage estimate of A phases, B phases and C three-phase bus：
With
2) double-bus of parallel running or the voltage estimate of many buses are calculated as follows：
Wherein：With The phase voltage measuring value and estimate of bus i are represented respectively； For
The phase voltage of bus i measures weight, wiIt is the busbar voltage weight of parallel running.
9. a kind of main website-substation data cooperative identification method as claimed in claim 6, it is characterised in that the switch is distant
Letter verification includes：The verification of the folding condition according to the PMU current measurements for switching to switching includes：
1) whether it is more than the closure for having currentless judgement threshold value ε to determine switch, root according to the current amplitude for flowing through certain switch
The folding condition undetermined of switch is set up according to the size of the current amplitude of switching time t
2) basisOn off state calculate each switching node Injection Current sum determine switch state or switch electricity
The property of the data that flow is surveyed；
3) switch of mistake is measured with the electric current correcting current of other nodes or switch, and is set up according to revised current measurement
New folding condition undeterminedAnd willWith the on off state of moment t-1Contrast, obtains the switch for conjugating.
10. a kind of main website-substation data cooperative identification method as claimed in claim 1, it is characterised in that the step
The cooperative identification of the main website-transformer station of III includes：
The transformer station being shown below accesses the verification of the looped network measurement parameters matching formed after main website：
Wherein Pu,XuThe respectively active measuring value and branch reactance parameters value of characteristic of loop branches.
The device of 11. the method for claim 1, it is characterised in that described device includes that the data being sequentially connected are read
Modulus block, data processing module, data memory module, substation data identification module and main website-transformer station's cooperative identification module.
The device of 12. methods as claimed in claim 11, it is characterised in that
The data read module, for the model service from transformer substation end and measure service acquisition transformer station model data and
Metric data；
The data processing module, for the data for reading to be carried out classification treatment；
The data memory module, for data storage；
The substation data recognizes module, carries out transformer station's state for the model data and metric data to transformer station and estimates
Meter, correctness verification and amendment；
The main website-transformer station's cooperative identification module, the matching for substation data and main website data is verified, by main website
Coordination with transformer station is calculated, and proofreads the identification result of transformer station.
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| CN112446801A (en) * | 2020-10-28 | 2021-03-05 | 国网辽宁省电力有限公司 | System and method for effectively improving data quality of power system |
| CN112713655A (en) * | 2020-12-29 | 2021-04-27 | 国网安徽省电力有限公司 | Regulating cloud-based transformer substation operation state studying and judging method |
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