CN101465564B - In-situ digitalization method and apparatus for transforming plant primary equipment - Google Patents
In-situ digitalization method and apparatus for transforming plant primary equipment Download PDFInfo
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- CN101465564B CN101465564B CN2009100765708A CN200910076570A CN101465564B CN 101465564 B CN101465564 B CN 101465564B CN 2009100765708 A CN2009100765708 A CN 2009100765708A CN 200910076570 A CN200910076570 A CN 200910076570A CN 101465564 B CN101465564 B CN 101465564B
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- 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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
Abstract
The invention relates to an in-situ digitization method and a device of primary equipment of a substation; the in-situ digitalizer is arranged in each gap of the primary equipment on a spacing layer of the substation; the in-situ digitalizer respectively collects the status quantity such as a switch and a disconnecting link and the like in the same gap to convert into GOOSE format message, and respectively collects mutual inductor digital quantity and analog quantity information in the same gap to convert into sampling value transport format message, and the information processed by the in-situ digitization is sent out to a local area network in a process layer of the substation; the local area network in the process layer receives the GOOSE format message for converting into the open-closed operation control of the switch and the disconnecting link. The in-situ digitization method and the device thereof of the substation share the information in a uniform information platform, and the communication network is used for replacing control cables, thus being convenient for the design, construction, extension-construction of the substation, improving the reliability, further improving automation and management level and reducing comprehensive construction cost.
Description
Technical field
The present invention relates to a kind of power technology field, particularly relate to a kind of transforming plant primary equipment in-situ digitalization method and device.
Background technology
In recent years, the continuous employing of new technology such as computer chip and network, fundamentally changed the basic outlook of traditional transformer station: the equipment of total digitalization, system with the network formation, be aided with ripe dispatch automated system, constantly improving the automaticity and the reliability of substation operation, and can really use the function that automation should be able to realize gradually, be that automation no longer is the good-looking hard-to-use showy postures of martial arts, produce problem and the needs that occur in the actual motion but really can solve and satisfy, electric substation automation system is accepted by the user substantially and is used.
Electric substation automation system can be divided into process layer, wall, substation level according to the IEC61850 standard; the process layer comprises that various primary equipments are as primary elements such as switch, circuit, transformer, capacitor, CT/PT; wall is that various secondary devices comprise collection, measurement, control, protection, automatics, fault filtering etc., and substation level is that whole transformer station is carried out security monitoring, control, operation and carries out exchanges data with the transformer station outside.At present general electric substation automation system be the information of each switch at interval of process layer primary equipment, disconnecting link, instrument transformer directly be transferred in being arranged at interval or be arranged at interval near be that the intelligent electronic device IED control room in finishes protection, observing and controlling function and enters communication manager and carries out being transferred to scheduling after stipulations are changed; the information that is about to an interval inserts among the IED of an intelligence; information interaction also adopts the hardwire mode substantially between the different IED, as shown in Figure 1 and Figure 2.The biggest obstacle that adopts the electric substation automation system of this pattern to face is the information that intelligent electronic device IED will now gather each primary element such as switch at interval of primary equipment when needing the information of transforming plant primary equipment at every turn, and use a large amount of IED, the IED of different manufacturers, even the IED of same producer different model is because the background of exploitation, the restriction of operating experience and technical merit, the communication protocol and the user interface that are adopted are inequality, thereby be difficult to realize seamless integrated and interoperability, need extra hardware (as protocol converter) and software to realize that IED is interconnected, also to give training the user, the advantage and the meaning of transformer station's realization automation have been weakened to a great extent, and quite a few systemic-function repeats to be provided with, do not accomplish that information resources are shared, cause the field connection complexity, the communication protocol of the each several part interface of system is inconsistent, increased and invested and influenced the reliability of system, and influenced the opening and the extensibility of whole system.
Summary of the invention
Technical problem to be solved by this invention is: prior art directly inserts the transforming plant primary equipment each intelligent electronic device IED (wherein instrument transformer analog quantity A/D conversion in IED) and causes intelligent electronic device IED all will show Information Monitoring just carrying out the interconnected problem such as communication protocol conversion that needs of computing and processing, different manufacturers IED, a kind of transforming plant primary equipment in-situ digitalization method and device are provided at every turn every quantity of state such as interior switch, disconnecting link and instrument transformer analog quantity.The present invention is arranged on local digitizer in each interval of transforming plant primary equipment, this local digitizer carries out in-situ digitalization in each interval makes signal meet the IEC61850 agreement, need not show Information Monitoring and also can share, be convenient to the reliability of transformer station's design, construction, enlarging, maintenance and repair, the transmission of raising signal, further improve automation and managerial skills and reduce comprehensive cost at unified information platform.
In order to address the above problem, technical scheme of the present invention is as follows:
A kind of transforming plant primary equipment in-situ digitalization method, it is characterized in that: the on off state amount of gathering respectively in the same interval converts GOOSE form message to, the instrument transformer digital quantity or the analog quantity of gathering respectively in the same interval convert the sampled value transformat message that meets the IEC61850 agreement to, each quantity of state, digital quantity and analog quantity at interval is through above-mentioned conversion, i.e. the information that obtains after the in-situ digitalization processing sends to the local area network (LAN) of transformer station's process layer; Receive GOOSE form message from the local area network (LAN) of process layer and convert branch closing operation control to switch; Device synchronization acquisition state amount, digital quantity and the analog quantity of Information Monitoring in described each interval.
The local area network (LAN) of transformer station's process layer will be sent to after the described in-situ digitalization processing of quantity of state, digital quantity, analog quantity process in this interval that collect in the same interval; be transferred to integrated IED by switch again; each quantity of state, digital quantity, analog quantity in-situ digitalization in this interval at interval all is transferred to this integrated IED by described switch after handling, thereby this integrated IED respectively each information through after the in-situ digitalization processing of exporting is at interval carried out computing and processing realizes the protection and the automation function of transformer station.
Just make the message transmission of gathering in the synchronization Information Monitoring and synchronization local area network (LAN) according to the synchronous acquisition order of integrated IED, the sample-synchronous of assurance harvester to transformer station's process layer at each equipment at interval of Information Monitoring.
Instrument transformer information in the same interval of described collection is digital information/analog information of electronic mutual inductor ECT/EVT and/or traditional instrument transformer CT, PT analog information.
The Dual-Ethernet optical-fibre communications of described transmission of Information, described Dual-Ethernet optical fiber is FX100/1000 optical fiber; Described switch is the Ethernet optical switch.
A kind of transforming plant primary equipment local digitizer, it is characterized in that: local digitizer is arranged in each interval, described local digitizer is connected with switch, instrument transformer, and the local area network (LAN) of described local digitizer by transformer station's process layer is connected with universal digital interface on the switch; Described local digitizer converts the on off state amount in the interval that collects to GOOSE form message, instrument transformer digital quantity in the interval that collects or analog quantity are converted to the sampled value transformat message that meets the IEC61850 agreement, above-mentioned conversion, be that in-situ digitalization is handled, message transmission after above-mentioned in-situ digitalization handled is to the local area network (LAN) of transformer station's process layer, and the GOOSE form message that the local area network (LAN) from transformer station's process layer is received converts the branch closing operation to switch to; In the described local digitizer synchronous processing unit is set, described synchronous processing unit makes local digitizer synchronous acquisition on off state amount information and instrument transformer analog quantity or digital information.
Described local digitizer comprises the core processor unit, opens into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit; Described core processor unit is connected with opening into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit, and described opening into leaving processing unit is connected with switch at interval; Described leaving converts the local area network (LAN) that GOOSE form message is transferred to transformer station's process layer in core processor unit and IEC61850 agreement support package after processing unit is gathered the quantity of state of switch, the GOOSE form message of receiving from the local area network (LAN) of transformer station's process layer converted to deciliter control operation of switch at core processor unit and IEC61850 agreement support package; Described analog quantity access unit is connected with instrument transformer at interval, and the interior instrument transformer information of described analog quantity access unit acquisition interval converts the local area network (LAN) that the sampled value transformat message that meets the IEC61850 agreement is linked into transformer station's process layer in core processor unit and IEC61850 agreement support package.
Described IEC61850 agreement support package comprises GOOSE signal dispatcher module, sampled value sending module, XML configuration file parsing module; Described GOOSE signal dispatcher module becomes GOOSE form message to be transferred to the local area network (LAN) of transformer station's process layer opening into leaving on off state amount information translation that processing unit collects, and the GOOSE form message of receiving from the local area network (LAN) of transformer station's process layer is converted to deciliter control operation to switch; The sampled value transformat message that the information translation that described sampled value sending module collects the analog quantity access unit becomes to meet the IEC61850 agreement is linked into the local area network (LAN) of transformer station's process layer; Described XML configuration file parsing module is provided with programmable configuration file and explains support package, and the configuration file that the parsing task is carried out is used to realize the feature description and the associating information of switch, instrument transformer, and the comprehensive call relation of switch, instrument transformer and scanning frequency are distributed.
Described analog quantity access unit comprises miniature accurate instrument transformer, voltage modulate circuit, A/D convertor circuit, electronic mutual inductor interface signal modulate circuit;
The analog quantity information that described miniature accurate instrument transformer, voltage modulate circuit, A/D convertor circuit receive traditional instrument transformer carries out the A/D conversion; Described electronic mutual inductor interface signal modulate circuit receives the various information of electronic mutual inductor.
Described core processor unit comprises the FLASH of dominant frequency, 32M DDR internal memory and the 16M of 32-bit microprocessor, 160MHz, and described core processor unit adopts vxWorks operating system, scheduler task, management resource.
Described synchronous processing unit links to each other with described core processor unit, described synchronous processing unit is provided with synchronized sampling support software bag, the incoming fiber optic synchronizing signal carry out precision to the time, synchronized sampling is handled and adjust sampling instant and real-time clock is safeguarded according to synchronous input signal is accurate.
Described man-machine interface unit is connected with described core processor unit information by CPLD with 7 keyboards by the blue screen liquid crystal of a 320X240, can show basic Information Monitoring and abnormality, and simply the control device operation is provided with; Described man-machine interface is provided with the man-machine interface program package in the unit, realizes configurable human-machine operation, is convenient to operation monitoring.
Described network insertion unit uses the Ethernet optical fiber of 2 road 100/1000M to connect the local area network (LAN) of transformer station's process layer, is transferred to integrated IED by switch again, is used to realize carry out information interaction to the configuration of device and with described integrated IED.
Described local digitizer is provided with BSP and hardware drive program, makes software operate control to hardware resource.
Described local digitizer is provided with programmable function element storehouse, comprises that sampled value compensation and conditioning, quantity of state open the executive component into conditioning, effective value computing.
Described local digitizer is provided with ECT/EVT digital interface, ECT/EVT analog interface and/or CT/PT analog interface; And electronic mutual inductor interface support software is set, be used to receive analog quantity information and the digital information of ECT and EVT.
Described local digitizer is provided with the WEB maintenance interface, and the WEB interface routine is set, and is used for the operational factor of inking device, the running status of testing fixture.
Described switch is the Ethernet optical switch, and described integrated IED, Ethernet optical switch, Ethernet optical fiber are redundant configuration, and two complete equipments move simultaneously.
Technique effect of the present invention is as follows:
The inventive method converts to and meets the message that related protocol requires by gathering quantity of state, digital quantity, analog quantity in the same interval respectively, each all does at interval such processing is that the information that obtains after in-situ digitalization is handled sends to the local area network (LAN) of transformer station's process layer, and receives the same format message and convert branch closing operation control to switch, disconnecting link to.The digital information that meets the stipulations standard that these are changed so just can be utilized by various secondary devices easily at any time, and does not need each equipment taking remote measurement, the device that meets different stipulations is being set when remote control, remote signalling separately again and goes each to gather, use and control at interval again.Having solved intelligent electronic device IED all will show Information Monitoring at every turn and just can carry out computing and processing, the interconnected problems such as communication protocol conversion that need of different manufacturers IED.
The inventive method is arranged on local digitizer in each interval, with interior at interval switch, disconnecting link, instrument transformer connects and the local area network (LAN) by transformer station's process layer is connected with the universal digital interface of Ethernet optical switch, switch in the same interval is gathered in opening into leaving processing unit in the local digitizer, the disconnecting link quantity of state is in the core processor unit, GOOSE signal dispatcher module in the IEC61850 agreement support package converts the local area network (LAN) that is transferred to transformer station's process layer behind the GOOSE form message to, and the GOOSE form message of receiving from the local area network (LAN) of transformer station's process layer is converted to switch, the branch closing operation of disconnecting link; Analog quantity access unit in the local digitizer is gathered the sampled value sending module of instrument transformer analog or digital information in core processor unit, IEC61850 agreement support package in the same interval and is converted the sampled value transformat message transmissions that meets the IEC61850 agreement local area network (LAN) to transformer station's process layer to.This in-situ digitalization of in this interval, realizing, only need draw a pair of optical fiber substitutes original tens cables to each of primary equipments such as switch at interval, it is succinct that the design process of transformer station becomes, need not cable trough is connected with cable to the control room, just the integrated test of intelligent switch can be finished before dispatching from the factory by auxiliary intelligent switch commissioning device, to on-the-spot only need carrying out get final product for number optical cables interconnection seldom, the system of Gou Chenging has compared tangible advantage with integrated system in the past like this, and reliability improves, extensibility and flexibility improve and the interior secondary cable letter in station is lacked, reduce investment outlay.
Realize that in this interval in-situ digitalization can also make whole electric substation automation system satisfy the requirement of IEC-61850 standard, all information adopt unified information model, insert substation communication network by the uniform communication standard, therefore the various functions of electric substation automation system can be shared unified information platform, and equipment room can be realized seamless link; Make the protection of transformer station; observing and controlling; metering; monitoring; telemechanical; systems such as VQC all can be with same communication network received current; quantity of state information such as voltage and send control command; be not required to be difference in functionality construction information gathering separately; transmission and executive system; under the prerequisite that does not influence message transmission reliability and real-time, carry out information sharing; solved cost; flexibility; contradiction between the performance; realized standard open fully; can expand future; be easy to upgrading; the system architecture of flexibility; transformer station is when extended function and expansion scale; only need on communication network, to insert newly-increased in-situ digitalization equipment; need not to transform or change existing equipment; the protection customer investment reduces transformer station's Life cycle cost.
The present invention is transferred to integrated IED with the signal of the above-mentioned local area network (LAN) of realizing being transferred to behind the in-situ digitalization transformer station's process layer in this interval through the universal digital interface of Ethernet optical switch, with each signal of exporting at interval through behind in-situ digitalization all be transferred to an integrated IED finish protection, observing and controlling and with scheduling or supervisory control system communication.Like this with original one at interval the pattern of the corresponding IED of information (intelligent electronic device protection) of unit change into an integrated IED and protect, control comprehensive automation system of transformer substation, having omitted original employed a large amount of IED equipment and the exchanges data between each IED is connected with hardwire, this integrated IED also plays observing and controlling, metering, monitoring, telemechanical, VQC, failure wave-recording, sequence of events recording and finishes the function of each information of gathering at interval being carried out the communication protocol conversion, realized the optimization of equipment integral, minimizing fund and operation and maintenance cost; Transformer station when what's new, if original collection and actuating equipment can satisfy can what's new demand, can on original equipment, move the software of what's new, significantly reduced hardware investment.And can not increase any hardware cost and finish centralized protection automation functions such as small current earthing wire-selecting, low all low pressure off-loads, automatic closing, simple and easy bus protection, the automatic compensation of voltage power-less; increase cost slightly and can finish functions such as failure wave-recording, micro_computer five_proof locking, this all need install equipment additional in addition in traditional automation of transformation substations.Use the present invention of integrated IED, engineering design and construction becomes fast, extends the convenience that also becomes, also can save cable, therefore causes the comprehensive cost of integrated protection IED of the present invention very low.
Synchronous processing unit in the local digitizer receives and just makes after the order of the synchronous acquisition information that integrated IED sends according to system operation situation at the equipment of Information Monitoring all from moment synchronous acquisition switch and disconnecting link quantity of state information, instrument transformer analog quantity or the digital information of the order that receives synchronous acquisition information and be transferred to the local area network (LAN) of transformer station's process layer, so that integrated IED downloads required information from the local area network (LAN) of transformer station's process layer at any time, also carry out frequency-tracking, guarantee the sampling accuracy of harvester.
Use 2 road optical fiber 100/1000M Ethernets between local digitizer and the integrated IED, support Dual-Ethernet (10,000,000/100,000,000) communication between integrated IED and the scheduling/supervisory control system, be used to realize carry out information interaction to the configuration of device and with integrated IED.Can replace complicated control cable with communication network like this; make the network communication Electro Magnetic Compatibility good; the reliability height; also guarantee simultaneously the good electromagnetic compatible environment of integrated protection IED; adopt RJ45 or FX100 optical fiber interface; accomplished all to adopt between each equipment computer communication technology; article one, channel can transmit the information of a plurality of passages; the quantity of order wire is simplified significantly; communication system is transmission information checking sign indicating number and passage self check information in the transmission effective information; stop the signal of misinformating on the one hand; can in time alarm when communication system failure on the other hand, the digital signal Optical Fiber Transmission fundamentally solves anti-interference problem.The all remote-controlled realization of all functions, the information of communication system transmits is more complete, and the reliability and the real-time of communication all increase substantially, and therefore transformer station can realize more, more complicated automation function, improves automatization level; Each equipment and communication network all can possess perfect self-checking function, cooperate with the on-line insulation monitoring system to realize repair based on condition of component according to the health status of equipment.
Integrated form IED, Ethernet optical switch, process layer optical fiber are redundant configuration; normally be that two complete equipments move simultaneously; there is a cover to be judged to the i.e. action of protection action; work as a cover maintenance or fault like this and do not influence another set of normal operation; adopt two fiber optic Ethernet switches and two integrated protection IED configuration, constitute the reliability that two Hot Spares further improve system.
The present invention is arranged on local digitizer in each interval of primary equipment, this local digitizer converts the switch, the disconnecting link quantity of state that collect at interval GOOSE form message to, the instrument transformer information translation that collects is become to meet the sampled value transformat message of IEC61850 agreement, arrives the local area network (LAN) of transformer station's process layer through the message transmission after the above-mentioned digitized processing; The GOOSE form message that receives from the local area network (LAN) of transformer station's process layer converts the branch closing operation control to switch, disconnecting link to; The present invention has also used integrated IED, each process at interval in-situ digitalization in this interval is handled the message transmission of back output and is finished protection, observing and controlling, metering, monitoring, telemechanical, VQC function to this integrated IED; These each digital information exported at interval is uploaded to integrated protection IED with Dual-Ethernet (100,000,000/1,000 million) respectively through switch; and in order to improve the integrated IED of its reliability; switch; Ethernet optical fiber is redundant configuration; two complete equipments move simultaneously; this transforming plant primary equipment in-situ digitalization method and device thereof are shared the various functions of the integrated automation of transformation stations at unified information platform; replace complicated control cable with communication network; the equipment room seamless link, the problem of interoperability between the solution devices from different manufacturers; be convenient to transformer station's design; construction; enlarging; maintenance and repair; improve the reliability of signal transmission; further improve automation and managerial skills; and reduction comprehensive cost.
Description of drawings:
Fig. 1 Fig. 2 is present general electric substation automation system schematic diagram;
Fig. 3 is the connection diagram between local digitizer of the present invention and miscellaneous equipment;
Fig. 4 is a local digitizer module frame chart of the present invention;
Fig. 5 is the analog quantity access unit block diagram in the local digitizer of the present invention;
Fig. 6 is an integrated IED module frame chart of the present invention;
Fig. 7 is a comprehensive automation system of transformer substation schematic diagram of the present invention;
Fig. 8 is each interval in-situ digitalization schematic diagram of the present invention.
Embodiment:
The present invention will be described below in conjunction with accompanying drawing.Fig. 3 is the connection diagram between local digitizer of the present invention and miscellaneous equipment; Fig. 4 is a local digitizer module frame chart of the present invention; Fig. 5 is the analog quantity access unit block diagram in the local digitizer of the present invention; Fig. 8 is each interval in-situ digitalization schematic diagram of the present invention.
As shown in Figure 3, local digitizer of the present invention is arranged in each interval, promptly as shown in Figure 8, inlet wire at interval, high pressure P T at interval, the female connection of high pressure at interval, main transformer high pressure master advances at interval, main transformer low pressure master advances at interval, the main transformer body at interval, station service at interval, low pressure PT at interval, low pressure and mend at interval, the low pressure outlet at interval, the female connection of low pressure respectively is provided with local digitizer at interval.As Fig. 3, shown in Figure 7, local digitizer is connected with primary elements such as switch, disconnecting link, instrument transformers, and local digitizer is connected with switch 1 or switch 2 by the local area network (LAN) of transformer station's process layer.As shown in Figure 4, this local digitizer comprises core processor unit, synchronous processing unit, opens into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit; IEC61850 agreement support package comprises GOOSE signal dispatcher module, sampled value sending module, XML configuration file parsing module; As shown in Figure 5, the analog quantity access unit comprises miniature accurate instrument transformer, voltage modulate circuit, A/D convertor circuit, electronic mutual inductor interface signal modulate circuit.Core processor unit and synchronous processing unit, open into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit and be connected.
Opening in the local digitizer into leaving processing unit and interior at interval switch, disconnecting link connects, open into leaving processing unit and gather the position of the switch, the disconnecting link position, remote signalling on the spot such as the contact of circuit breaker lock, opening into leaving processing unit of each local digitizer can be gathered 16 way switch at most, the quantity of state of primary elements such as disconnecting link, the quantity of state information of these primary elements is in the core processor unit, GOOSE signal dispatcher module in the IEC61850 agreement support package converts the local area network (LAN) that is transferred to transformer station's process layer behind the GOOSE form message to, receive GOOSE form message in the core processor unit from the local area network (LAN) of process layer, GOOSE signal dispatcher module in the IEC61850 agreement support package converts to switch, the branch closing operation and the control switch of disconnecting link, disconnecting link deciliter, can control 5 switches deciliter.
Analog quantity access unit in the local digitizer is connected with instrument transformer at interval, the analog quantity access unit is provided with ECT/EVT digital interface, ECT/EVT analog interface and/or CT/PT analog interface, can receive analog quantity information and the digital information of CT/PT analog quantity information, ECT and EVT, the analog quantity access unit of each local digitizer can connect 14 road analog or digital interfaces at most, and ripple sampled point 24～96 can be adjusted weekly.Miniature accurate instrument transformer in the analog quantity access unit, voltage modulate circuit, A/D convertor circuit receive traditional CT/PT analog information and carry out the A/D conversion, and the electronic mutual inductor interface signal modulate circuit in the analog quantity access unit receives the various information of electronic mutual inductor.The sampled value sending module of these information in core processor unit, IEC61850 agreement support package that the analog quantity access unit receives converts the local area network (LAN) that is transferred to transformer station's process layer behind the sampled value transformat message that meets the IEC61850 agreement to.
Synchronous processing unit in the local digitizer receive just make after the order of the synchronous acquisition information that integrated IED sends according to system operation situation Information Monitoring each at interval equipment all from the moment synchronous acquisition switch and the disconnecting link quantity of state information of the order that receives synchronous acquisition information, instrument transformer analog quantity or digital information also are transferred to the local area network (LAN) of transformer station's process layer, this synchronous processing unit is provided with synchronized sampling support software bag, the incoming fiber optic synchronizing signal carry out precision to the time and synchronized sampling is handled and adjust sampling instant and real-time clock is safeguarded according to synchronous input signal is accurate, the line frequency of going forward side by side is followed the tracks of, and guarantees the sampling accuracy of harvester.
XML configuration file parsing module in the IEC61850 agreement support package in the local digitizer is provided with programmable configuration file and explains support package, the configuration file that the parsing task is carried out is used to realize the feature description and the associating information of switch, disconnecting link, instrument transformer, and the comprehensive call relation of switch, disconnecting link, instrument transformer and scanning frequency are distributed.
Man-machine interface unit in the local digitizer is realized being connected with device information by CPLD with 7 keyboards by the blue screen liquid crystal of a 320X240, can show basic Information Monitoring and abnormality, and simply the control device operation is provided with; In this man-machine interface unit the man-machine interface program package is set, realizes configurable human-machine operation, be convenient to operation monitoring.
Core processor unit in the local digitizer comprises the FLASH of dominant frequency, 32M DDR internal memory and the 16M of 32-bit microprocessor, 160MHz, adopts vxWorks operating system, realizes task scheduling, resource management; BSP and hardware drive program are set, realize operation and the control of software hardware resource; Programmable function element storehouse is set, comprises that sampled value compensation and conditioning, quantity of state open the executive component into conditioning, effective value computing.
Fig. 6 is an integrated IED module frame chart of the present invention, and Fig. 7 is a comprehensive automation system of transformer substation schematic diagram of the present invention.As Fig. 6; shown in Figure 7; be transferred to integrated IED through the above-mentioned signal that in this interval, is transferred to the local area network (LAN) of transformer station's process layer behind the realization in-situ digitalization through switch 1 or switch 2; as shown in Figure 7; all be transferred to an integrated IED behind the in-situ digitalization of the spaced information via local digitizer in substation and finish protection; observing and controlling; metering; monitoring; telemechanical; VQC also passes through switch 3 and scheduling or supervisory control system communication, and this integrated IED passes through the order of switch 3 receiving schedulings and/or supervisory control system and presses order and pass through the interior switch of switch 1 or switch 2 each intervals of control; primary elements such as disconnecting link.
Integrated IED comprise the core processor unit, to the time interface, synchronous processing unit, man-machine interface, IEC61850 agreement support package, communications protocol storehouse; The core processor unit is connected with IEC61850 agreement support package, described core processor unit with to the time interface, synchronous processing unit, man-machine interface, communications protocol storehouse be connected; The IEC61850 support package comprises GOOSE signal dispatcher module, sampled value receiver module; The GOOSE information of GOOSE signal dispatcher module desampler 1 or switch 2 outputs is finished functions such as protection, observing and controlling, metering, monitoring, telemechanical, VQC by the core processor unit, and after stipulations are transmitted in the communications protocol storehouse by switch 3 and scheduling or supervisory control system communication, the GOOSE signal dispatcher module receive after stipulations are transmitted in the communications protocol storehouse from scheduling/or the control command of supervisory control system by switch 3 transmission after switch 1 or the corresponding minor tick of switch 2 controls; The sampled value receiver module receives through each transducer signal of gathering at interval of switch 1 or switch 2 transmission and is finished functions such as protection, observing and controlling, metering, monitoring, telemechanical, VQC by the core processor unit, and passes through switch 3 and scheduling or supervisory control system communication after stipulations are transmitted in the communications protocol storehouse.
Core processor unit among the integrated IED comprises the FLASH space of dominant frequency, 256M sdram memory and the 256M of 32-bit microprocessor, 460MHz, 2 road 100M/1000M interfaces, the RJ45 interface of one road 100M; The core processor unit adopts vxWorks operating system, realizes task scheduling, resource management.
Synchronous processing unit among the integrated IED is provided with synchronized sampling support software bag, judge sample frequency and sampling instant according to the system frequency signal, and just make each equipment at interval after the synchronization acquired signal, be transferred to transformer station's process layer local area network (LAN) in acquired signal to each order of sending the synchronous acquisition signal at interval, and download required message transmission from the local area network (LAN) of transformer station's process layer at any time and to integrated IED, handle, also carry out frequency-tracking, guarantee the sampling accuracy of harvester.
Among the integrated IED to the time interface be provided with to the time software, receive the communication of GPS and pulse to the time information realize Clock management accurately, GPS can be built in the integrated IED also directly access switch 1 or switch 2 or directly be linked into complex automatic system by network.
Man-machine interface among the integrated IED has touch panel computer, touch panel computer is provided with X86 system 6.4 " touch-screen, windows operating system; the integrated management of implement device; and the man-machine interface program package is set; realize that real time information demonstration, historical information record and inquiry, safety management, device safeguard; and based on windows operating system and touch screen technology the demonstration maintenance interface, realize integrated supervision, control, maintenance and configuration to operation information, interface operation is simple.
Go forward side by side row communication stipulations conversion of other electronic intelligence equipment I ED also can be inserted in communications protocol storehouse among the integrated IED, carries out information interaction with scheduling or supervisory control system.
IEC61850 support package among the integrated IED also comprises XML configuration file parsing module, programmable configuration file is set explains support package, the configuration file that the parsing task is carried out is used to realize the feature description and the associating information of various elements, and the comprehensive call relation of each element and scanning frequency are distributed.
Core processor unit among the integrated IED is provided with programmable function element storehouse; comprise sampled value arithmetic element, protection judgment component, power measurement element, electric energy metrical element, failure wave-recording element, little electric current route selection element, voltage power-less control element; carry out electric weight calculating, protection logic determines, outlet configuration management and execution control strategy, data processing and logic control function, as each protection, measurement, the metering at interval and little electric current route selection, voltage power-less control and the five-prevention operation interlocking etc. of the level of standing to harvester.The core processor unit is provided with BSP and hardware drive program, realizes operation and the control of software to hardware resource.
Local digitizer and integrated IED adopt 2 road optical fiber 100/1000M Ethernets, use between integrated IED and the scheduling/supervisory control system and support Dual-Ethernet (10,000,000/100,000,000) communication, are used to realize carry out information interaction to the configuration of device and with integrated IED.Can replace complicated control cable with communication network like this; make the network communication Electro Magnetic Compatibility good; the reliability height; also guarantee simultaneously the good electromagnetic compatible environment of integrated protection IED; adopt RJ45 or FX100 optical fiber interface; accomplished between primary equipment and secondary device; all adopt computer communication technology between the secondary device; article one, channel can transmit the information of a plurality of passages; the quantity of order wire is simplified significantly; communication system is transmission information checking sign indicating number and passage self check information in the transmission effective information; stop the signal of misinformating on the one hand; when communication system failure, can in time alarm on the other hand; the digital signal Optical Fiber Transmission fundamentally solves anti-interference problem.The WEB maintenance interface is set, the WEB interface routine is set, be used to realize the operational factor of inking device, the running status of testing fixture.
Switch 2 among above-mentioned switch 1 and switch 3 and the figure is the Ethernet optical switch.As shown in Figure 7; integrated form IED, Ethernet optical switch, process layer optical fiber are redundant configuration; normally be that two complete equipments move simultaneously; there is a cover to be judged to the i.e. action of protection action; work as a cover maintenance or fault like this and do not influence another set of normal operation; adopt two fiber optic Ethernet switches and two integrated protection IED configuration, constitute the reliability that two Hot Spares further improve system.Switch 1 and switch 2 be redundant configuration each other.
The present invention is arranged on local digitizer in each interval of primary equipment, this local digitizer converts the switch, the disconnecting link quantity of state that collect at interval GOOSE form message to, the instrument transformer information translation that collects is become to meet the sampled value transformat message of IEC61850 agreement, arrives the local area network (LAN) of transformer station's process layer through the message transmission after the above-mentioned digitized processing; The GOOSE form message that receives from the local area network (LAN) of transformer station's process layer converts the branch closing operation control to switch, disconnecting link to; The present invention has also used integrated IED, each process at interval in-situ digitalization in this interval is handled the message transmission of back output and is finished protection, observing and controlling, metering, monitoring, telemechanical, VQC function to this integrated IED; These each digital information exported at interval is uploaded to integrated protection IED with Dual-Ethernet (100,000,000/1,000 million) respectively through switch; and in order to improve the integrated IED of its reliability; switch; Ethernet optical fiber is redundant configuration; two complete equipments move simultaneously; this transforming plant primary equipment in-situ digitalization method and device thereof are shared the various functions of the integrated automation of transformation stations at unified information platform; replace complicated control cable with communication network; the equipment room seamless link, the problem of interoperability between the solution devices from different manufacturers; be convenient to transformer station's design; construction; enlarging; maintenance and repair; improve the reliability of signal transmission; further improve automation and managerial skills; and reduction comprehensive cost.
Claims (18)
1. transforming plant primary equipment in-situ digitalization method, it is characterized in that: the on off state amount of gathering respectively in the same interval converts GOOSE form message to, the instrument transformer digital quantity or the analog quantity of gathering respectively in the same interval convert the sampled value transformat message that meets the IEC61850 agreement to, each quantity of state, digital quantity and analog quantity at interval is through above-mentioned conversion, i.e. the information that obtains after the in-situ digitalization processing sends to the local area network (LAN) of transformer station's process layer; Receive GOOSE form message from the local area network (LAN) of process layer and convert branch closing operation control to switch; Device synchronization acquisition state amount, digital quantity and the analog quantity of Information Monitoring in described each interval.
2. transforming plant primary equipment in-situ digitalization method according to claim 1; it is characterized in that: with the quantity of state that collects in the same interval; digital quantity; send to the local area network (LAN) of transformer station's process layer after the described in-situ digitalization processing of analog quantity process in this interval; be transferred to integrated IED by switch again; with each quantity of state at interval; digital quantity; analog quantity in-situ digitalization in this interval all is transferred to this integrated IED by described switch after handling, thereby this integrated IED respectively each information through after the in-situ digitalization processing of exporting is at interval carried out computing and processing realizes the protection and the automation function of transformer station.
3. transforming plant primary equipment in-situ digitalization method according to claim 1, it is characterized in that: just make the message transmission of gathering in the synchronization Information Monitoring and synchronization local area network (LAN) according to the synchronous acquisition order of integrated IED, the sample-synchronous of assurance harvester to transformer station's process layer at each equipment at interval of Information Monitoring.
4. transforming plant primary equipment in-situ digitalization method according to claim 1 is characterized in that: the instrument transformer analog quantity in the same interval of described collection is the analog quantity of electronic mutual inductor ECT/EVT, and/or traditional instrument transformer CT, PT analog quantity; Instrument transformer digital quantity in the same interval of described collection is the digital quantity of electronic mutual inductor ECT/EVT.
5. transforming plant primary equipment in-situ digitalization method according to claim 2 is characterized in that: the Dual-Ethernet optical-fibre communications of described transmission of Information, and described Dual-Ethernet optical fiber is FX100/1000 optical fiber; Described switch is the Ethernet optical switch.
6. transforming plant primary equipment local digitizer, it is characterized in that: local digitizer is arranged in each interval, described local digitizer is connected with switch, instrument transformer, and the local area network (LAN) of described local digitizer by transformer station's process layer is connected with universal digital interface on the switch; Described local digitizer converts the on off state amount in the interval that collects to GOOSE form message, instrument transformer digital quantity in the interval that collects or analog quantity are converted to the sampled value transformat message that meets the IEC61850 agreement, above-mentioned conversion, be that in-situ digitalization is handled, message transmission after above-mentioned in-situ digitalization handled is to the local area network (LAN) of transformer station's process layer, and the GOOSE form message that the local area network (LAN) from transformer station's process layer is received converts the branch closing operation to switch to; In the described local digitizer synchronous processing unit is set, described synchronous processing unit makes local digitizer synchronous acquisition on off state amount information and instrument transformer analog quantity or digital information.
7. transforming plant primary equipment local digitizer according to claim 6 is characterized in that: described local digitizer comprises the core processor unit, opens into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit; Described core processor unit is connected with opening into leaving processing unit, analog quantity access unit, IEC61850 agreement support package, man-machine interface unit, network insertion unit, and described opening into leaving processing unit is connected with switch at interval; Described leaving converts the local area network (LAN) that GOOSE form message is transferred to transformer station's process layer in core processor unit and IEC61850 agreement support package after processing unit is gathered the quantity of state of switch, the GOOSE form message of receiving from the local area network (LAN) of transformer station's process layer converted to deciliter control operation of switch at core processor unit and IEC61850 agreement support package; Described analog quantity access unit is connected with instrument transformer at interval, and the interior instrument transformer information of described analog quantity access unit acquisition interval converts the local area network (LAN) that the sampled value transformat message that meets the IEC61850 agreement is linked into transformer station's process layer in core processor unit and IEC61850 agreement support package.
8. transforming plant primary equipment local digitizer according to claim 7 is characterized in that: described IEC61850 agreement support package comprises GOOSE signal dispatcher module, sampled value sending module, XML configuration file parsing module; Described GOOSE signal dispatcher module becomes GOOSE form message to be transferred to the local area network (LAN) of transformer station's process layer opening into leaving on off state amount information translation that processing unit collects, and the GOOSE form message of receiving from the local area network (LAN) of transformer station's process layer is converted to deciliter control operation to switch; The sampled value transformat message that the information translation that described sampled value sending module collects the analog quantity access unit becomes to meet the IEC61850 agreement is linked into the local area network (LAN) of transformer station's process layer; Described XML configuration file parsing module is provided with programmable configuration file and explains support package, and the configuration file that the parsing task is carried out is used to realize the feature description and the associating information of switch, instrument transformer, and the comprehensive call relation of switch, instrument transformer and scanning frequency are distributed.
9. transforming plant primary equipment local digitizer according to claim 7 is characterized in that: described analog quantity access unit comprises miniature accurate instrument transformer, voltage modulate circuit, A/D convertor circuit, electronic mutual inductor interface signal modulate circuit; The analog quantity information that described miniature accurate instrument transformer, voltage modulate circuit, A/D convertor circuit receive traditional instrument transformer carries out the A/D conversion; Described electronic mutual inductor interface signal modulate circuit receives the various information of electronic mutual inductor.
10. transforming plant primary equipment local digitizer according to claim 7, it is characterized in that: described core processor unit comprises the FLASH of dominant frequency, 32M DDR internal memory and the 16M of 32-bit microprocessor, 160MHz, described core processor unit adopts vxWorks operating system, scheduler task, management resource.
11. transforming plant primary equipment local digitizer according to claim 7, it is characterized in that: described synchronous processing unit links to each other with described core processor unit, described synchronous processing unit is provided with synchronized sampling support software bag, the incoming fiber optic synchronizing signal carry out precision to the time, synchronized sampling is handled and adjust sampling instant and real-time clock is safeguarded according to synchronous input signal is accurate.
12. transforming plant primary equipment local digitizer according to claim 7, it is characterized in that: described man-machine interface unit is connected with described core processor unit information by CPLD with 7 keyboards by the blue screen liquid crystal of a 320X240, can show basic Information Monitoring and abnormality, and can simple control device operation be provided with; Described man-machine interface is provided with the man-machine interface program package in the unit, realizes configurable human-machine operation, is convenient to operation monitoring.
13. transforming plant primary equipment local digitizer according to claim 7, it is characterized in that: described network insertion unit uses the Ethernet optical fiber of 2 road 100/1000M to connect the local area network (LAN) of transformer station's process layer, be transferred to integrated IED by switch again, be used to realize carry out information interaction to the configuration of device and with described integrated IED.
14. according to claim 6 or 7 described transforming plant primary equipment local digitizers, it is characterized in that: described local digitizer is provided with BSP and hardware drive program, makes software operate control to hardware resource.
15. according to claim 6 or 7 described transforming plant primary equipment local digitizers, it is characterized in that: described local digitizer is provided with programmable function element storehouse, comprises that sampled value compensation and conditioning, quantity of state open the executive component into conditioning, effective value computing.
16. according to claim 6 or 7 described transforming plant primary equipment local digitizers, it is characterized in that: described local digitizer is provided with ECT/EVT digital interface, ECT/EVT analog interface and/or CT/PT analog interface; And electronic mutual inductor interface support software is set, be used to receive analog quantity information and the digital information of ECT and EVT.
17. according to claim 6 or 7 described transforming plant primary equipment local digitizers, it is characterized in that: described local digitizer is provided with the WEB maintenance interface, the WEB interface routine is set, is used for the operational factor of inking device, the running status of testing fixture.
18. transforming plant primary equipment local digitizer according to claim 13, it is characterized in that: described switch is the Ethernet optical switch, described integrated IED, Ethernet optical switch, Ethernet optical fiber are redundant configuration, and two complete equipments move simultaneously.
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