CN105449853A - Method for building digital substation - Google Patents
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- CN105449853A CN105449853A CN201510807401.2A CN201510807401A CN105449853A CN 105449853 A CN105449853 A CN 105449853A CN 201510807401 A CN201510807401 A CN 201510807401A CN 105449853 A CN105449853 A CN 105449853A
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- 230000005540 biological transmission Effects 0.000 claims description 18
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- 238000001514 detection method Methods 0.000 claims description 15
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- 239000002828 fuel tank Substances 0.000 description 2
- 235000015927 pasta Nutrition 0.000 description 2
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- H02J13/0006—
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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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- 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
- Y04S10/16—Electric power substations
Abstract
The invention relates to the design and building of a transformer station system, specifically a method for building a digital substation. Through the digitalized design of the digital substation, the digital processing of all layers of the substation and the digital processing of the primary side equipment and main transformer of the substation, the method achieves the building of the digital substation. Through the selection and protection of the main transformer of the substation, the method completes the control and protection functions of the digital substation, and enables the operation and control of the digital substation to be convenient, quick and reliable.
Description
Technical field
The present invention relates to a kind of design and foundation of transformer substation system, specifically, is a kind of method setting up digital transformer substation.
Background technology
Transformer station is indispensable important step in electric power system, play a part very important to the safe and economical operation of electrical network, if still rely on original manual metering, record, manual operation is main operational mode, the demand of modern power systems management mode cannot be met; Meanwhile, for the device such as supervision, control, protection of transformer station, if large function and the speed advantage of microcomputer data processing can not be utilized fully, be also a kind of wasting of resources economically.Along with the continuous expansion of electrical network scale, the day by day complicated of distributing electric power and the requirement of user to the quality of power supply improve further, grid automation just seems of crucial importance.
Summary of the invention
For the deficiency that prior art exists, the present invention proposes a kind of method setting up digital transformer substation, to meet now for the demand of intelligent power network.The described method setting up digital transformer substation comprises the equipment digitalized and main transformer digitlization of Substation Design digitlization, Substation process-level digitlization, transformer station's wall digitlization, substation level digitlization, primary side.
The digitized implementation process of Substation Design is mainly divided into Four processes, i.e. data acquisition, data encapsulation, data migration, data handover Four processes.Each process is both relatively independent, connects each other again, keeps the close relation of upstream and downstream.
Data acquisition: data acquisition is a very important link is the process collected digitized agent object and arrange.
Data acquisition explicit data acquisition target, gathers following object: layout design threedimensional model usually; Design system flow chart, winding diagram, logic control chart; Electrical design figure; Equipment data figure; Equipment specification book.
Data acquisition should meet promptness, is a promptness collection process, will collect classification in time, and being convenient to there is time enough like this, verifying in time data, with the correctness of absolute guarantee's data through being verified as correct effective data.
Ensure data correctness, digitized content-data is very numerous and diverse, needs to eliminate the false and retain the true, and therefore needs mechanism and the program of a checking data correctness, in order to avoid cause the mistake of the data of digitized content, or incorrect.
Standard classify, digitized the contents are multifarious and disorderly, need carry out processing classification, guarantee effectively retrieval and quick search to data.
Data encapsulation: digitized content presents to the final correct result of user one, require to keep it permanent, unalterable feature, therefore must carry out special form encapsulation and processing processing procedure to it, carry out the selection of the kind of consolidation form, comprise PDF, SVG and ZGL tri-kinds of forms.
Data migration: after data complete collection, encapsulation process process, need to be incorporated in digital Platform, data are added the process in platform data warehouse by this, data migration requires to carry out the confirmation of correctness School Affairs to the data after data encapsulation, and point door of normative and reasonable is sorted out, and formally could start the transplanting carrying out data afterwards.Before formally carrying out data migration, have a complete integrated planning and design, set up a set of structural framing of data simultaneously to data, for different classifying contents, the loading carrying out data is transplanted.
After data migration completes, to actual verification and the test of transplanting data, need ensure that all data can both correctly complete opening be browsed with smooth and easy, intelligent excavating and the retrieval and inquisition of data can be realized in addition.
Data handover: when data integrity be stored in digital Platform database, and when can carry out retrieving and inquiring about, this database is intactly transferred to the process of user, the process control of data handover mainly comprises the content of two aspects: progress monitoring and quality control.The progress monitoring of data handover mainly guarantees that information is transferred can complete the transfer of information according to the time of receiving party.The quality control of data handover mainly guarantees that information transfer can by the quality requirement of receiving party to complete the transfer of information.
The foundation of digital transformer substation needs to carry out digitlization to each layer of transformer station, and transformer station's digitlization comprises process layer digitlization, wall digitlization and substation level digitlization.
Process layer is the intelligent part of the electric equipments such as intelligent breaker, and be the faying face of primary equipment and secondary device, the major function of process layer comprises: the detection of real time execution electric parameters, operational outfit state-detection and operation control command perform.
Real time execution electric parameters detects: the detection of mainly electric current the same as traditional function, voltage, phase place and harmonic component, other electric parameters such as meritorious, idle, electric flux obtain by the equipment computing of wall.
Operational outfit state-detection: transformer station needs the equipment carrying out state parameter detection to mainly contain transformer, circuit breaker, isolating switch, bus, capacitor, reactor and DC power system etc.The content of on-line checkingi mainly contains the data such as temperature, pressure, density, insulation, mechanical property.
Operation control command performs: the execution of operation control command comprises load tap changer regulable control, the control of capacity reactance device switching, circuit breaker, keeps apart the sub-control system of closing and DC power supply charge and discharge control etc.
Process layer digital Construction comprises: the Internet Transmission of the in-site collecting of the digitlization of current/voltage analog quantity and transmission, primary equipment quantity of state and GOOSE network transmission, protection breaker tripping and closing and supervisory control system guidance command and execution (the cooperation signal containing between protection).Traditional signal cable will be greatly reduced by the digitlization of process layer signal, Network Transmitting, reduce the cost of cable, pipeline area, solve the problem by electromagnetic interference in signal cable transmitting procedure, simplify design, decrease the workload of site operation, debugging.Cable is replaced with network, the self-inspection of signal transmission loop can be realized by network message, realize the repair based on condition of component in transmission loop, avoid the contact of traditional cable loop unreliable time cannot the shortcoming of self-inspection, will greatly reduce maintenance workload and the maintenance cost of transformer station.
Process layer devices comprises:
The digitlization of electronic mutual inductor-realize current/voltage analog quantity;
Protection and measurement and control device is distributed to after the merge cells-digital signal of electronic mutual inductor gathered;
The state of intelligent cell-collection primary equipment transfers to protection and measurement and control device by GOOSE network, and the order simultaneously receiving protection and measurement and control device operates primary equipment.
The installation on the spot of intelligence convergence control cabinet-realize protection and measurement and control device, optimizes the control loop of primary equipment
The major function of wall comprises: gather this interval procedure layer real time data information; Implement the protecting control function to primary equipment; Implement this interval operation blocking function; The implementation and operation same period and other controlling functions; To data acquisition, statistical calculation and sending of control command, there is priority level control; Perform the transfer function of forming a connecting link of data, complete at a high speed the network communicating function with process layer and substation level, upper and lower network interface possesses twoport full duplex mode to improve the redundancy of information channel, ensures the reliability of network service simultaneously.
Wall digital Construction comprises the digitlization realizing transmitting data information in interval procedure; signal digitalization transmission is controlled when facilities and equipments defencive function; when carrying out the operation such as synchronous operation and locking; realize Digital Control; the mode of digitlization and networking is adopted to realize to information processing, collection, computing and information interaction; achieve digital Construction and the control of wall, every data of Clear & Transparent display wall.
The major function of substation level comprises: the real time data information being gathered full station by two-stage express network, continuous refreshing real-time data base, log in history database on time, by the dispatching of power netwoks of relevant data direct information or control centre, receive dispatching of power netwoks or control centre's relevant controlling order and turn wall, process layer performs, there is the full station operation locking controlling functions of online programmable, there is local monitoring in station, man-machine interface function, as display, operation, print, function and the images such as warning, the multimedia functions such as sound, have wall, the on-line maintenance of process layer devices, online configuration, the functions such as online modification parameter.
The digital Construction of transformer station comprises database and adopts with the information of entirely standing and all adopt digital information to carry out alternately, and adopts digital signal to exchange with between other each layers, realizes the Digital Control of master control part.
The digital Construction of transformer station's entirety comprises:
Full station, according to IEC61850 protocol construction, adopts Ethernet exchanging information between station level and wall, wall and process layer adopt the point-to-point exchange sampled value of optical fiber and switching value information.
110kV, 35kV circuit adopts the electronic mutual inductor exported according to IEC61850 Protocol Digital, and 10kv circuit adopts the electronic mutual inductor of modulating output.In interval, sampled data transmission adopts IEC61850-9-1 agreement, adopts FT3 serial protocol across interval data transmission.
Adopt traditional primary equipment, configuration intelligent terminal, be connected with protection measuring and controlling equipment by optical fiber.
Configuration meets digital protective relay and the automatic safety device of IEC61850 communication standard.
Metering system configuration has the digital electric energy meter of fiber optic Ethernet interface.
Main transformer overload cutoff device realizes a large amount of switching value information exchange by station level network G OOSE service.
Wherein primary equipment digitlization realizes the intellectuality of primary equipment by the mode adopting electronic mutual inductor, conventional primary equipment adds intelligent assembly, and wherein intelligent assembly divides again intellectual monitoring assembly and intelligent terminal (protection, control, measurement).
The form adopting intellectual monitoring assembly and intelligent terminal to divide cabinet to install, shares data at station level between two cover systems.
Electronic mutual inductor is pressed two (often cover gathers double A/D) the Double-number amount that gathers of double-sensing and is exported pairing and cell location.
Main transformer is as part most important in transformer station, its Digital Control is the core content of transformer station's digital Construction, transformer Digital Control comprises merge cells, observing and controlling and protection, the Digital Realization of transformer realizes by setting up main transformer body intelligent assembly, main transformer body intelligent assembly comprises body intelligent terminal and transformer monitoring assembly, main transformer body intelligent terminal gathers main transformer body electricity and non-electric charge quantity signalling, comprise gear, gas, temperature of oil in transformer, winding temperature, pressure etc., complete non-ionizing energy loss function, non-ionizing energy loss tripping operation by control cables directly the mode of jumping realize, main transformer body intelligent terminal is integrated gear Regulation Control and the air-cooled control of main transformer etc. also, each parameter of monitoring assembly on-line real time monitoring main transformer, once there is data exception or out-of-limit, body intelligent terminal is sent to process.
Transformer measure control device receives this interval merge cells sampled value, and result is sent to station level network, complete simultaneously to this interval switch, disconnecting link on the spot with remote control function.
Protection equipment for transformer receives electric current, the voltage sample digital signal of merge cells, completes the protection to transformer according to the electric quantity signal such as electric current, voltage, adopts GOOSE mode to complete switch, the position signal acquisition of disconnecting link and breaker tripping and closing controlling functions;
Merge cells: gather this interval CT, PT signal, and electric current, voltage combined signal are reached process-level network.
The selection of digital transformer substation main transformer capacity needs to determine according to the size of load, and wherein load value is:
S in formula
cfor the calculated load of line voltage distribution grade, K
tfor the simultaneous simultaneity factor of load, α % is the line loss rate of line voltage distribution level Grid, and P is the load of user,
for power factor.
The configuration of main transformer protection of digitalized substation comprises main transformer protection, differential protection, overcurrent protection, overload protection and zero-sequence current protection.
To the reduction of the various fault in oil tank of transformer and pasta, protection should be installed, the gas that it produces according to fuel tank internal or oil stream and action.Wherein carry out Signal transmissions and feedback during light gas, during grave gas, direct tripping transformer each side power circuit breaker breaks down in Transformer Winding and lead-out wire, and when there is turn-to-turn short circuit, differential protection instantaneous operation, tripping each side power circuit breaker.
In order to reflect the Transformer Winding overcurrent that transformer external fault causes, and when power transformer interior fault, as the standby of differential protection and protection, overcurrent protection is adopted to protect in support.
Under overladen situation occurs transformer, need device overload protection device, Overload is protected.
For the power transformer with large earth current, need to install zero-sequence current protection, as the backup protection of the backup protection box adjacent elements earthed circuit of main protection.
The present invention is by the Design of digital to digital transformer substation; the digitized processing of the concrete transformer station's capital equipment such as primary side equipment, main transformer of the digitized processing of the concrete each layer of transformer station and transformer station realizes the foundation of digital transformer substation; by improving the control and scheduling co-design function of digital transformer substation for the selection of transforming plant main transformer and protection, the operation of digital transformer substation is controlled more convenient and reliable.
Accompanying drawing explanation
Fig. 1 is the structure principle chart that the present invention sets up digital transformer substation
Embodiment
As shown in Figure 1, a kind of method setting up digital transformer substation, to meet now for the demand of intelligent power network.The described method setting up digital transformer substation comprises the equipment digitalized and main transformer digitlization of Substation Design digitlization, Substation process-level digitlization, transformer station's wall digitlization, substation level digitlization, primary side.
The digitized implementation process of Substation Design is mainly divided into Four processes, i.e. data acquisition, data encapsulation, data migration, data handover Four processes.Each process is both relatively independent, connects each other again, keeps the close relation of upstream and downstream.
Data acquisition: data acquisition is a very important link is the process collected digitized agent object and arrange.
Data acquisition explicit data acquisition target, gathers following object: layout design threedimensional model usually; Design system flow chart, winding diagram, logic control chart; Electrical design figure; Equipment data figure; Equipment specification book.
Data acquisition should meet promptness, is a promptness collection process, will collect classification in time, and being convenient to there is time enough like this, verifying in time data, with the correctness of absolute guarantee's data through being verified as correct effective data.
Ensure data correctness, digitized content-data is very numerous and diverse, needs to eliminate the false and retain the true, and therefore needs mechanism and the program of a checking data correctness, in order to avoid cause the mistake of the data of digitized content, or incorrect.
Standard classify, digitized the contents are multifarious and disorderly, need carry out processing classification, guarantee effectively retrieval and quick search to data.
Data encapsulation: digitized content presents to the final correct result of user one, require to keep it permanent, unalterable feature, therefore must carry out special form encapsulation and processing processing procedure to it, carry out the selection of the kind of consolidation form, comprise PDF, SVG and ZGL tri-kinds of forms.
Data migration: after data complete collection, encapsulation process process, need to be incorporated in digital Platform, data are added the process in platform data warehouse by this, data migration requires to carry out the confirmation of correctness School Affairs to the data after data encapsulation, and point door of normative and reasonable is sorted out, and formally could start the transplanting carrying out data afterwards.Before formally carrying out data migration, have a complete integrated planning and design, set up a set of structural framing of data simultaneously to data, for different classifying contents, the loading carrying out data is transplanted.
After data migration completes, to actual verification and the test of transplanting data, need ensure that all data can both correctly complete opening be browsed with smooth and easy, intelligent excavating and the retrieval and inquisition of data can be realized in addition.
Data handover: when data integrity be stored in digital Platform database, and when can carry out retrieving and inquiring about, this database is intactly transferred to the process of user, the process control of data handover mainly comprises the content of two aspects: progress monitoring and quality control.The progress monitoring of data handover mainly guarantees that information is transferred can complete the transfer of information according to the time of receiving party.The quality control of data handover mainly guarantees that information transfer can by the quality requirement of receiving party to complete the transfer of information.
The foundation of digital transformer substation needs to carry out digitlization to each layer of transformer station, and transformer station's digitlization comprises process layer digitlization, wall digitlization and substation level digitlization.
Process layer is the intelligent part of the electric equipments such as intelligent breaker, and be the faying face of primary equipment and secondary device, the major function of process layer comprises: the detection of real time execution electric parameters, operational outfit state-detection and operation control command perform.
Real time execution electric parameters detects: the detection of mainly electric current the same as traditional function, voltage, phase place and harmonic component, other electric parameters such as meritorious, idle, electric flux obtain by the equipment computing of wall.
Operational outfit state-detection: transformer station needs the equipment carrying out state parameter detection to mainly contain transformer, circuit breaker, isolating switch, bus, capacitor, reactor and DC power system etc.The content of on-line checkingi mainly contains the data such as temperature, pressure, density, insulation, mechanical property.
Operation control command performs: the execution of operation control command comprises load tap changer regulable control, the control of capacity reactance device switching, circuit breaker, keeps apart the sub-control system of closing and DC power supply charge and discharge control etc.
Process layer digital Construction comprises: the Internet Transmission of the in-site collecting of the digitlization of current/voltage analog quantity and transmission, primary equipment quantity of state and GOOSE network transmission, protection breaker tripping and closing and supervisory control system guidance command and execution (the cooperation signal containing between protection).Traditional signal cable will be greatly reduced by the digitlization of process layer signal, Network Transmitting, reduce the cost of cable, pipeline area, solve the problem by electromagnetic interference in signal cable transmitting procedure, simplify design, decrease the workload of site operation, debugging.Cable is replaced with network, the self-inspection of signal transmission loop can be realized by network message, realize the repair based on condition of component in transmission loop, avoid the contact of traditional cable loop unreliable time cannot the shortcoming of self-inspection, will greatly reduce maintenance workload and the maintenance cost of transformer station.
Process layer devices comprises:
The digitlization of electronic mutual inductor-realize current/voltage analog quantity;
Protection and measurement and control device is distributed to after the merge cells-digital signal of electronic mutual inductor gathered;
The state of intelligent cell-collection primary equipment transfers to protection and measurement and control device by GOOSE network, and the order simultaneously receiving protection and measurement and control device operates primary equipment.
The installation on the spot of intelligence convergence control cabinet-realize protection and measurement and control device, optimizes the control loop of primary equipment
The major function of wall comprises: gather this interval procedure layer real time data information; Implement the protecting control function to primary equipment; Implement this interval operation blocking function; The implementation and operation same period and other controlling functions; To data acquisition, statistical calculation and sending of control command, there is priority level control; Perform the transfer function of forming a connecting link of data, complete at a high speed the network communicating function with process layer and substation level, upper and lower network interface possesses twoport full duplex mode to improve the redundancy of information channel, ensures the reliability of network service simultaneously.
Wall digital Construction comprises the digitlization realizing transmitting data information in interval procedure; signal digitalization transmission is controlled when facilities and equipments defencive function; when carrying out the operation such as synchronous operation and locking; realize Digital Control; the mode of digitlization and networking is adopted to realize to information processing, collection, computing and information interaction; achieve digital Construction and the control of wall, every data of Clear & Transparent display wall.
The major function of substation level comprises: the real time data information being gathered full station by two-stage express network, continuous refreshing real-time data base, log in history database on time, by the dispatching of power netwoks of relevant data direct information or control centre, receive dispatching of power netwoks or control centre's relevant controlling order and turn wall, process layer performs, there is the full station operation locking controlling functions of online programmable, there is local monitoring in station, man-machine interface function, as display, operation, print, function and the images such as warning, the multimedia functions such as sound, have wall, the on-line maintenance of process layer devices, online configuration, the functions such as online modification parameter.
Substation level digital Construction comprises database and adopts with the information of entirely standing and all adopt digital information to carry out alternately, and adopts digital signal to exchange with between other each layers, realizes the Digital Control of master control part.
The digital Construction of transformer station's entirety comprises:
Full station, according to IEC61850 protocol construction, adopts Ethernet exchanging information between station level and wall, wall and process layer adopt the point-to-point exchange sampled value of optical fiber and switching value information.
110kV, 35kV circuit adopts the electronic mutual inductor exported according to IEC61850 Protocol Digital, and 10kv circuit adopts the electronic mutual inductor of modulating output.In interval, sampled data transmission adopts IEC61850-9-1 agreement, adopts FT3 serial protocol across interval data transmission.
Adopt traditional primary equipment, configuration intelligent terminal, be connected with protection measuring and controlling equipment by optical fiber.
Configuration meets digital protective relay and the automatic safety device of IEC61850 communication standard.
Metering system configuration has the digital electric energy meter of fiber optic Ethernet interface.
Main transformer overload cutoff device realizes a large amount of switching value information exchange by station level network G OOSE service.
Wherein primary equipment digitlization realizes the intellectuality of primary equipment by the mode adopting electronic mutual inductor, conventional primary equipment adds intelligent assembly, and wherein intelligent assembly divides again intellectual monitoring assembly and intelligent terminal (protection, control, measurement).
The form adopting intellectual monitoring assembly and intelligent terminal to divide cabinet to install, shares data at station level between two cover systems.
Electronic mutual inductor is pressed two (often cover gathers double A/D) the Double-number amount that gathers of double-sensing and is exported pairing and cell location.
Main transformer is as part most important in transformer station, its Digital Control is the core content of transformer station's digital Construction, transformer Digital Control comprises merge cells, observing and controlling and protection, the Digital Realization of transformer realizes by setting up main transformer body intelligent assembly, main transformer body intelligent assembly comprises body intelligent terminal and transformer monitoring assembly, main transformer body intelligent terminal gathers main transformer body electricity and non-electric charge quantity signalling, comprise gear, gas, temperature of oil in transformer, winding temperature, pressure etc., complete non-ionizing energy loss function, non-ionizing energy loss tripping operation by control cables directly the mode of jumping realize, main transformer body intelligent terminal is integrated gear Regulation Control and the air-cooled control of main transformer etc. also, each parameter of monitoring assembly on-line real time monitoring main transformer, once there is data exception or out-of-limit, body intelligent terminal is sent to process.
Transformer measure control device receives this interval merge cells sampled value, and result is sent to station level network, complete simultaneously to this interval switch, disconnecting link on the spot with remote control function.
Protection equipment for transformer receives electric current, the voltage sample digital signal of merge cells, completes the protection to transformer according to the electric quantity signal such as electric current, voltage, adopts GOOSE mode to complete switch, the position signal acquisition of disconnecting link and breaker tripping and closing controlling functions;
Merge cells: gather this interval CT, PT signal, and electric current, voltage combined signal are reached process-level network.
The selection of digital transformer substation main transformer capacity needs to determine according to the size of load, and wherein load value is:
S in formula
cfor the calculated load of line voltage distribution grade, K
tfor the simultaneous simultaneity factor of load, α % is the line loss rate of line voltage distribution level Grid, and P is the load of user,
for power factor.
The configuration of main transformer protection of digitalized substation comprises main transformer protection, differential protection, overcurrent protection, overload protection and zero-sequence current protection.
To the reduction of the various fault in oil tank of transformer and pasta, protection should be installed, the gas that it produces according to fuel tank internal or oil stream and action.Wherein carry out Signal transmissions and feedback during light gas, during grave gas, direct tripping transformer each side power circuit breaker breaks down in Transformer Winding and lead-out wire, and when there is turn-to-turn short circuit, differential protection instantaneous operation, tripping each side power circuit breaker.
In order to reflect the Transformer Winding overcurrent that transformer external fault causes, and when power transformer interior fault, as the standby of differential protection and protection, overcurrent protection is adopted to protect in support.
Under overladen situation occurs transformer, need device overload protection device, Overload is protected.
For the power transformer with large earth current, need to install zero-sequence current protection, as the backup protection of the backup protection box adjacent elements earthed circuit of main protection.
The present invention is by the Design of digital to digital transformer substation; the digitized processing of the concrete transformer station's capital equipment such as primary side equipment, main transformer of the digitized processing of the concrete each layer of transformer station and transformer station realizes the foundation of digital transformer substation; by improving the control and scheduling co-design function of digital transformer substation for the selection of transforming plant main transformer and protection, the operation of digital transformer substation is controlled more convenient and reliable.
The foregoing is only of the present invention and be preferably not limited to the present invention, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. set up the method for digital transformer substation for one kind, it is characterized in that, the described method setting up digital transformer substation comprises the equipment digitalized and main transformer digitlization of Substation Design digitlization, Substation process-level digitlization, transformer station's wall digitlization, substation level digitlization, primary side.
2. set up the method for digital transformer substation as claimed in claim 1, it is characterized in that, the digitized implementation process of described Substation Design is mainly divided into Four processes, i.e. data acquisition, data encapsulation, data migration, data handover Four processes.
3. set up the method for digital transformer substation as claimed in claim 2, it is characterized in that, described data acquisition is the process collected digitized agent object and arrange,
Data acquisition object comprises: layout design threedimensional model, design system flow chart, winding diagram, logic control chart, electrical design figure, equipment data figure and equipment specification book;
Data acquisition should meet promptness, classification will be collected in time through being verified as correct effective data, data are verified in time, ensure data correctness, digitized content-data is very numerous and diverse, needs to eliminate the false and retain the true, set up mechanism and the program of checking data correctness, Standard classify, carries out processing classification to data, guarantees effectively retrieval and quick search.
4. set up the method for digital transformer substation as claimed in claim 3, it is characterized in that, described data encapsulation is present to the final correct result of user one based on digitized content, require to keep it permanent, unalterable feature, special form encapsulation and processing processing procedure are carried out to it, carries out the selection of the kind of consolidation form, comprise PDF, SVG and ZGL tri-kinds of forms.
5. set up the method for digital transformer substation as claimed in claim 4, it is characterized in that, described data migration is that data complete collection, after encapsulation process process, data are added the process of platform database, data migration requires to carry out the confirmation of correctness School Affairs to the data after data encapsulation, and point door of normative and reasonable is sorted out, formally could start the transplanting carrying out data afterwards, before formally carrying out data migration, a complete integrated planning and design is had to data, set up a set of structural framing of data simultaneously, for different classifying contents, the loading carrying out data is transplanted,
After data migration completes, to actual verification and the test of transplanting data, ensure that all data can both correctly complete opening be browsed with smooth and easy, intelligent excavating and the retrieval and inquisition of data can be realized.
6. set up the method for digital transformer substation as claimed in claim 5, it is characterized in that, described data handover is stored in digital Platform database with working as data integrity, and when can carry out retrieving and inquiring about, this database is intactly transferred to the process of user, the process control of data handover mainly comprises the content of two aspects: progress monitoring and quality control, the progress monitoring of data handover mainly guarantees that information is transferred can complete the transfer of information according to the time of receiving party, the quality control of data handover mainly guarantees that information transfer can by the quality requirement of receiving party to complete the transfer of information.
7. set up the method for digital transformer substation as claimed in claim 6, it is characterized in that, process layer is the intelligent part of electric equipment, and the major function of process layer comprises: the detection of real time execution electric parameters, operational outfit state-detection and operation control command perform,
Real time execution electric parameters detects: the detection of mainly electric current the same as traditional function, voltage, phase place and harmonic component, and other electric parameters obtain by the equipment computing of wall,
Operational outfit state-detection: transformer station needs the equipment carrying out state parameter detection to mainly contain transformer, circuit breaker, isolating switch, bus, capacitor, reactor and DC power system, the content of on-line checkingi mainly contains temperature, pressure, density, insulation, mechanical property data
Operation control command performs: the execution of operation control command comprises load tap changer regulable control, the control of capacity reactance device switching, circuit breaker, keeps apart the sub-control system of closing and DC power supply charge and discharge control,
Process layer digital Construction comprises: the Internet Transmission of the in-site collecting of the digitlization of current/voltage analog quantity and transmission, primary equipment quantity of state and GOOSE network transmission, protection breaker tripping and closing and supervisory control system guidance command and execution,
Process layer devices comprises:
The digitlization of electronic mutual inductor-realize current/voltage analog quantity;
Protection and measurement and control device is distributed to after the merge cells-digital signal of electronic mutual inductor gathered;
The state of intelligent cell-collection primary equipment transfers to protection and measurement and control device by GOOSE network, and the order simultaneously receiving protection and measurement and control device operates primary equipment;
The installation on the spot of intelligence convergence control cabinet-realize protection and measurement and control device, optimizes the control loop of primary equipment;
The major function of wall comprises: gather this interval procedure layer real time data information; Implement the protecting control function to primary equipment; Implement this interval operation blocking function; The implementation and operation same period and other controlling functions; To data acquisition, statistical calculation and sending of control command, there is priority level control; Perform the transfer function of forming a connecting link of data, complete at a high speed the network communicating function with process layer and substation level, upper and lower network interface possesses twoport full duplex mode to improve the redundancy of information channel, ensures the reliability of network service simultaneously;
Wall digital Construction comprises the digitlization realizing transmitting data information in interval procedure, signal digitalization transmission is controlled when facilities and equipments defencive function, when carrying out synchronous operation and lock operation, realize Digital Control, the mode of digitlization and networking is adopted to realize to information processing, collection, computing and information interaction, achieve digital Construction and the control of wall, every data of Clear & Transparent display wall;
The major function of substation level comprises: the real time data information being gathered full station by two-stage express network, continuous refreshing real-time data base, log in history database on time, by the dispatching of power netwoks of relevant data direct information or control centre, receive dispatching of power netwoks or control centre's relevant controlling order and turn wall, process layer performs, there is the full station operation locking controlling functions of online programmable, there is local monitoring, man-machine interface function in station, there is the on-line maintenance to wall, process layer devices, online configuration, online modification parameter function;
Substation level digital Construction comprises database and adopts with the information of entirely standing and all adopt digital information to carry out alternately, and adopts digital signal to exchange with between other each layers, realizes the Digital Control of master control part.
8. set up the method for digital transformer substation as claimed in claim 7, it is characterized in that, the equipment digitalized intellectuality being realized primary equipment by the mode adopting electronic mutual inductor, conventional primary equipment adds intelligent assembly of described primary side, wherein intelligent assembly divides again intellectual monitoring assembly and intelligent terminal;
The form adopting intellectual monitoring assembly and intelligent terminal to divide cabinet to install, shares data at station level between two cover systems;
Electronic mutual inductor is pressed the two Double-number amount that gathers of double-sensing and is exported pairing and cell location;
Main transformer Digital Control comprises merge cells, observing and controlling and protection, the Digital Realization of transformer realizes by setting up main transformer body intelligent assembly, main transformer body intelligent assembly comprises body intelligent terminal and transformer monitoring assembly, main transformer body intelligent terminal gathers main transformer body electricity and non-electric charge quantity signalling, comprise gear, gas, temperature of oil in transformer, winding temperature, pressure, complete non-ionizing energy loss function, non-ionizing energy loss tripping operation by control cables directly the mode of jumping realize, main transformer body intelligent terminal is integrated gear Regulation Control and the air-cooled control of main transformer also, each parameter of monitoring assembly on-line real time monitoring main transformer, once there is data exception or out-of-limit, body intelligent terminal is sent to process,
Transformer measure control device receives this interval merge cells sampled value, and result is sent to station level network, complete simultaneously to this interval switch, disconnecting link on the spot with remote control function;
Protection equipment for transformer receives electric current, the voltage sample digital signal of merge cells, completes the protection to transformer according to the electric quantity signal such as electric current, voltage, adopts GOOSE mode to complete switch, the position signal acquisition of disconnecting link and breaker tripping and closing controlling functions;
Merge cells: gather this interval CT, PT signal, and electric current, voltage combined signal are reached process-level network;
The selection of digital transformer substation main transformer capacity needs to determine according to the size of load, and wherein load value is:
S in formula
cfor the calculated load of line voltage distribution grade, K
tfor the simultaneous simultaneity factor of load, α % is the line loss rate of line voltage distribution level Grid, and P is the load of user,
for power factor;
The configuration of main transformer protection of digitalized substation comprises main transformer protection, differential protection, overcurrent protection, overload protection and zero-sequence current protection.
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| CN109343509A (en) * | 2018-10-17 | 2019-02-15 | 国电南瑞科技股份有限公司 | The operation method of transformer station process layer equipment Running System |
| CN110676857A (en) * | 2019-10-28 | 2020-01-10 | 南方电网科学研究院有限责任公司 | Reactive compensation method, device and equipment |
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| CN101789624A (en) * | 2009-12-09 | 2010-07-28 | 中国电力科学研究院 | Centralized digital transformer substation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109343509A (en) * | 2018-10-17 | 2019-02-15 | 国电南瑞科技股份有限公司 | The operation method of transformer station process layer equipment Running System |
| CN109343509B (en) * | 2018-10-17 | 2021-07-16 | 国电南瑞科技股份有限公司 | Operation method of intelligent substation process level equipment operation system |
| CN110676857A (en) * | 2019-10-28 | 2020-01-10 | 南方电网科学研究院有限责任公司 | Reactive compensation method, device and equipment |
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