That China's electrical network continues to keep during " 12 " is fast-developing, newly-built, enlarging, to transform transformer station thousands of, and this provides wide stage for the research of intelligent grid, construction and development.Intelligent substation and intelligent high-pressure equipment and technology put forward under such background.
Intelligent transformer station is the basis with intelligent primary equipment and unified information platform; Through adopting technology such as advanced transducer, electronics, information, communication, control, artificial intelligence; Remote monitoring, the sequencing that realizes substation equipment moves automatic reconfiguration and mutual flexibly with control centre's information behind control, equipment state overhauling, running status self adaptation, intellectual analysis decision-making, the network failure automatically; Realized the intellectuality of a secondary device, the automation of operational management.Smart machine is the high-tension apparatus that has added intelligent assembly, and intelligent assembly is through state perception and instruction executive component, realizes the networking and the automation of visual, the control of state, supports for intelligent grid provides most basic function.
The intelligent high-pressure primary equipment is the important equipment that intelligent grid is built, and also is the direction of primary equipment WeiLai Technology development.The intelligent high-pressure primary equipment is made up of high pressure primary equipment body and intelligent assembly; Has the characteristic of measuring digitlization, Control Networkization, status visualization, function integration and information interactionization; The partial function of integrated process layer and wall possesses measurement, control, protection, metering, the whole and partial function in detecting.
Primary cut-out is maintenance in the electric power system primary equipment, the maximum equipment of maintenance workload, and according to ASSOCIATE STATISTICS, most maintenance cost flower and is to spend on the periodic inspection on switch mostly.The high pressure primary equipment is not full intellectualized at present, has following shortcoming:
1) circuit breaker long-play, operating mechanism, electromechanics trouble shooting difficulty, the periodic inspection expense is big, and efficient is low;
2) operating management department can not be grasped transformer station's visual plant ruuning situation at any time, has potential safety hazard;
3) traditional on-line monitoring information disunity, communication protocol are nonstandard, diversity communication mode, and monitoring system, equipment vendors' variation, user and system interface disunity become information island one by one, can't carry out information interaction and ADVANCED APPLICATIONS;
4) in order to solve the interoperability problem, different vendor adopts protocol conversion device mostly, increase construction cost, and the increase of information translation link can cause information loss;
5) for the distinct interface of multiple sensors, configuration is complicated, the engineering construction difficulty, and maintenance workload is big.
Based on above some deficiency, promptly influence primary equipment intellectualized technology development level, there is potential safety hazard again.
Therefore, need seek a kind of method and solve this problem.The breaker mechanic property state monitoring method based on IEC61850 that the present invention proposes has remedied above-mentioned some deficiency, and intelligent assembly equipment is with high reliability, abundant interface equipment; Accomplish communication standardization, non-maintainingization of engineering construction is through diagnostic function on the spot; For the high-tension apparatus status monitoring provides technical foundation, gather the primary equipment state information in real time, for repair based on condition of component provides reference frame; Make it to replace periodic inspection, improve the utilance and the life-span of high pressure primary equipment greatly, can in time find the potential safety hazard of power equipment; The generation of preventing accident; Guarantee the reliability of power supply, avoid the loss that causes because of interruption maintenance, practice thrift the expense of preventative periodic inspection.This is the new trial of on the conventional circuit breaker basis, intelligent breaker being done.
Summary of the invention
Get rid of breaker operation mechanism, electromechanics failure problems in order to solve the tradition big intelligentized problem that opens circuit, to solve, the invention discloses a kind of breaker mechanic property state monitoring apparatus.
The following technical scheme of the concrete employing of the present invention:
A kind of breaker mechanic property state monitoring apparatus based on IEC61850; Said monitoring device comprises operating mechanism monitoring assembly, information management assembly, SV assembly, direct current monitoring assembly, 485 monitoring assemblies, leaves assembly, opens into assembly, indicator light assembly, between each assembly and between each assembly and the information management assembly through the inner CAN net of said monitoring device, high speed serial ports and/or to the time bus connect; It is characterized in that:
The operating mechanism monitoring assembly comprises data acquisition CPU and analyzing and diagnosing CPU; Wherein the auxiliary node of data acquisition CPU connection stroke sensor, current sensor and circuit breaker links to each other; Be used to accomplish the synchronous acquisition of breaker trip signal, current signal, position signalling, form the crude sampling value, communicate through shared drive mode and analyzing and diagnosing CPU; Analyzing and diagnosing CPU real-time analysis sampled value forms diagnosis report;
The direct current monitoring assembly links to each other with temperature, humidity sensor, gathers the temperature and humidity signal of reflection circuit breaker operating condition;
Said opening connects distant place involution into assembly and opens to open into signal, energy storage state into signal, turnaround of unit and open into signal, is used for the energy storage state and the inspecting state of monitoring breaker operating mechanism;
Said SV assembly receives the SV sampling message from merge cells, realizes circuit breaker main circuit current monitoring function;
485 monitoring assemblies link to each other with the breaker operator counter with the control loop voltage sensor respectively, accomplish control loop voltage and breaker operator number of times digital signal acquiring;
Said information management assembly also possesses Ethernet interface, is connected with the on-line monitoring backstage through the IEC61850 agreement, and phase-splitting breaker trip curve is integrated, and each monitoring assembly is configured management;
The said assembly of leaving of said information management assembly control is to alarming node output breaker operation mechanism alarm signal, to drive the Indicating lamp board of outdoor cabinet;
Said information management assembly sends the control command to indicator light to the indicator light assembly, accomplishes the operation of said monitoring device and breaker body, alarm status deixis.
Wherein, indicator light refers to the alarm led lamp indication in the checkout gear, possesses the alarming node output function and leave assembly, can drive sound alarm signals such as alarm bell, and the Indicating lamp board that drives outdoor cabinet.
The advantage of this breaker mechanic property state monitoring apparatus based on IEC61850 disclosed by the invention is; The function that possesses in-site comprehensive assessment, real-time status forecast; Can in time circuit breaker current state parameter be offered the substation operation personnel through the station level network; Effectively the help operations staff analyzes circuit breaker ruuning situation and judges, has improved operating efficiency.
Monitoring device of the present invention has following technique effect:
1, multiple sensors inserts flexibly, and configuration is simple;
2, the seamless information architecture of IEC61850, model is exported automatically;
3, in proper working order, stable under the comparatively abominable outdoor environment of external condition such as said equipment, many dirt big at high electric field, high-intensity magnetic field, the temperature difference, satisfy the requirement of State Grid Corporation of China's standard and correlation technique standard;
4, be equipped with high-speed figure formula stroke, current data acquisition channel, stroke curve is recorded ripple in real time automatically, and characteristic value is extracted, the analyzing and diagnosing result is accurate;
5, field adjustable is simple;
6, external interface is multiple functional, promptly supports IEC61850MMS, supports IEC61850 GOOSE, SV again;
7, possesses diagnostic function on the spot.
Below further combine Figure of description and specific embodiment that technical scheme of the present invention is described.
The invention discloses a kind of breaker mechanic property state monitoring apparatus; As shown in Figure 1; This device comprises operating mechanism monitoring assembly, information management assembly, SV assembly, direct current monitoring assembly, 485 monitoring assemblies, leaves assembly, opens into assembly, indicator light assembly, between each assembly and between each assembly and the information management assembly through the inner CAN net of said monitoring device, high speed serial ports and/or to the time bus connect.Each assembly is concrete to be introduced as follows:
(1) operating mechanism monitoring assembly
The operating mechanism monitoring assembly is a main control component in the monitoring device, comprises data acquisition CPU and analyzing and diagnosing CPU.For circuit breaker three-phase link gear, a configurable operating mechanism monitoring assembly, for circuit breaker phase-splitting operating mechanism, configurable three operating mechanism monitoring assemblies.The operating mechanism monitoring assembly directly is connected with stroke sensor, current sensor, voltage sensor, auxiliary node etc.Wherein stroke sensor can comprise grating angular displacement sensor and linear displacement transducer; Grating angular displacement sensor is installed on the connecting lever of contact connecting rod; The angle that turns over through connecting lever can record the mechanical trip of contact connecting rod indirectly; Linear displacement transducer is directly installed on the contact connecting rod, can directly record the mechanical trip of contact connecting rod, and two kinds of transducers can suitably be selected for use according to the difference of mounting means and position; Stroke sensor directly is connected with the operating mechanism monitoring assembly of monitoring device, and the operating mechanism monitoring assembly can insert angular displacement sensor or linear displacement transducer through selection of configuration; Wherein current sensor is gathered divide-shut brake coil current, current of electric, considers the restriction of installing space in the operating mechanism; Adopt the preposition unit of 4 road electric currents unification design, 4 Hall elements are installed on preposition unit, be installed on the operating mechanism terminal board through guide rail; Adopt the 24V power supply; Consider and the synchronism and the anti-interference of travel high-speed data acquisition, adopt 485 telecommunication cable modes, be directly connected to the operating mechanism monitoring assembly; Wherein the auxiliary node status signal is opened into collection through the forceful electric power of direct current 220V on the operating mechanism monitoring assembly or 110V, directly is connected through cable with the operating mechanism monitoring assembly.The energy storage motor voltage sensor adopts the guide rail mounting means, is installed on the operating mechanism terminal board.Temperature Humidity Sensor monitoring operating mechanism operating condition is installed on the operating mechanism terminal board.The operating mechanism monitoring assembly also possesses the analyzing and diagnosing function except that possessing data acquisition function.Other each function monitoring assembly is given the data acquisition CPU in the operating mechanism monitoring assembly with the data result that collects through the CAN network transmission in the monitoring device; Data acquisition CPU communicates through shared drive mode and analyzing and diagnosing CPU; Analyzing and diagnosing CPU real-time analysis sampled value forms diagnosis report.The corresponding breaker operation mechanism of each operating mechanism monitoring assembly for phase-splitting circuit breaker situation, can insert three operating mechanism monitoring assemblies in monitoring device.Every phase operating mechanism is accomplished by an operating mechanism monitoring assembly.The operating mechanism monitoring assembly is gathered stroke sensor data, circuit-breaker switching on-off coil current data, energy storage motor electric current, circuit breaker aided location node signal etc.To each circuit-breaker switching on-off operation carrying out data sampling, record ripple; Form the stroke curve data file; Extract characteristic parameters such as stroke, divide-shut brake speed, branch wire time, divide-shut brake coil current, energy storage motor electric current; According to the value data of monitoring device stored, whether unusual, divide-shut brake speed to stroke the and whether time is up to standard, whether energy storage motor is analyzed unusually give the information management assembly with breaker operator report and analysis report through the CAN network transmission; According to analysis result the monitoring device led status is refreshed simultaneously, drive the indicator light assembly through the CAN network packet.
(2) direct current monitoring assembly
The direct current monitoring assembly image data way of output is the transducer of 4 ~ 20mA analog quantity; Like operating mechanism operating condition information, comprise temperature, humidity etc., adopt 4 ~ 20mA analog quantity mode to insert; Engineering value configuration information according to the monitoring device stored; Can accomplish the conversion of engineering value, and with the data acquisition CPU of conversion result through CAN network transmission to operating mechanism monitoring assembly in the monitoring device, analyzing and diagnosing CPU obtains the Monitoring Data of dc component through the shared drive mode; Supply operating mechanism monitoring assembly assistant analysis usefulness, convenient actual engineering is to the type selecting of transducer.
(3) 485 monitoring assemblies
485 monitoring assemblies are gathered 485 stipulations data, and through CAN net in installing, analyzing and diagnosing CPU direct and the operating mechanism monitoring assembly communicates.The 485 monitoring assembly image data way of outputs are 485 digital transducers; Circuit-breaker switching on-off number of operations sensor monitors circuit-breaker switching on-off change in location; Statistics circuit-breaker switching on-off number of times; Be installed on the operating mechanism terminal board, the data-interface mode is 485 communication modes, is connected with 485 monitoring assemblies of monitoring device.Through with being connected of transducer; Accomplish ModBus stipulations and other privately owned stipulations access, extract useful parameter information, will be through CAN network transmission in the monitoring device to the operating mechanism monitoring assembly; Supply operating mechanism monitoring assembly assistant analysis usefulness, convenient actual engineering is to the type selecting of transducer.
(4) open into, leave assembly
The IO assembly mainly comprise open into assembly with leave assembly; Open into the outer distant place involution of assembly and monitoring device open into, turnaround of unit open into, energy storage state open into etc. signal be connected; Completion is opened into signal and is changed slower signal access; To the operating mechanism monitoring assembly, make things convenient for the remote maintenance of monitoring device through CAN network transmission in the monitoring device.Leaving assembly mainly is that the driving message that receives from the information management assembly issues the driving message by the information management assembly; Mode through node signal reflects device alarm, breaker operation mechanism alarm status; To drive the Indicating lamp board of outdoor cabinet, remind the operations staff to note.
(5) indicator light assembly
The indicator light assembly mainly is to receive from CAN net in the CAN net indicator light message monitoring device of monitoring device information management assembly, refreshes the state of indicator light according to message content.The definition in the configuration of operating mechanism monitoring assembly of the concrete connotation of each indicator light.The operation of reflection monitoring device, alarm status remind the operations staff to note in real time.Indicator light assembly finishing device running status is indicated on the spot, does not possess the alarming node output function, and alarm signal can drive distant place signal alarm bell sound, possesses the alarming node output function.
(6) SV assembly
The SV assembly mainly is to consider that intelligent substation or datumization transformer station adopt the situation of unconventional instrument transformer; Check the electric current and voltage information of circuit, bus if desired; Can monitor through direct access SV message mode,, can decode the SV message according to the configuration of SV subscription information in the SV assembly; And calculate information such as effective value, harmonic wave, system frequency; To operating mechanism monitoring assembly assembly, supply assistant analysis usefulness through CAN network transmission in the monitoring device, whether this assembly can be used as spare package and uses through selection of configuration.
(7) information management group assembly
Monitoring device internal information Management Unit possesses the function of interior data management of monitoring device and IEC61850 communication, and data management module is divided into following functional module again: communication management module, Configuration Manager, recording management module, Reports Administration module, historgraphic data recording module, Clock management module.Communication management module is accomplished the parsing that functional unit, PC configuration tool are delivered to the various messages of information management assembly, and the data message of information management assembly packed by inner stipulation sends to the corresponding target address.The reception of all configuration informations of Configuration Manager finishing device, parsing, storage, verification, on function such as send.The operating mechanism monitoring assembly sends to the information management assembly with original recorder data, and the recording management module is stored as record ripple file according to the configuration of record ripple with recorder data.When PC configuration tool or IEC61850 client calling record ripple file, the recording management module is retrieved storage record ripple file, send on the file data with file index or appointment.The Reports Administration module is stored as report file with all types of report informations that send on the functional unit spare assembly by set form.During PC configuration tool report file, the Reports Administration module is retrieved report file by type, send on the file data with file index or appointment.The historgraphic data recording module is stored the Monitoring Data of appointment by certain time interval, the real time data newspaper is saved as the history curve file.Clock receiving system external clock reference send to the time signal, the system clock of synchronizer, again through device inner to the time bus, the time of each functional unit synchronously.The information management assembly gather the following several kinds of situation that refer to: 1, phase-splitting mechanism; Will insert 3 operating mechanism monitoring assemblies in the device, the identity of 3 operating mechanism monitoring assemblies is equal, does not communicate by letter each other; But the user will see A, B, C three-phase stroke curve together; Want the information management assembly that the stroke curve of 3 operating mechanisms is spliced this moment, externally exports a wave file, rather than 3 wave files; Still accomplish by the operating mechanism monitoring assembly as for the collection of waveform, the information management assembly not with the external sensor direct communication.2, be phase-splitting mechanism equally, every operating mechanism monitoring assembly all can have alarm status, the lamp device stand by lamp, and this or logic need the information management assembly to judge, promptly in the device any one alarm is arranged, and all will light stand by lamp.
IEC 61850 modeling principles of monitoring device are followed " based on the converting equipment on-Line Monitor Device using standard of DLT860 standard " fully.Derive the master pattern file through the automatic modeling instrument.
The service of supporting comprises association service, reading and writing data service, report service, control service, replaces service, definite value service, log services, file service, GOOSE publish/subscribe, SV publish/subscribe.Each function monitoring IED uses special-purpose logical node to make up the communication data framework.
Intelligent assembly externally adopts IEC 61850 communications.Intelligent assembly communication comprises communication of process layer network and station level network service, follows IEC61850 communication protocol.All IED answer the access procedure layer network in the intelligent assembly, need carry out the IED of information interaction simultaneously with station level equipment, like monitoring function group master IED etc., also answer access station control layer network.For the IED that inserts station level and process layer network simultaneously, two network ports must adopt independently recording controller.
The IEC61850 model that is applicable to the circuit-breaker status monitoring is shown in form 1:
Form 1IEC61850 information modeling
Configuration interoperability preparation method
As shown in Figure 2; Intelligent assembly configuration of devices instrument is according to the configuration information of circuit breaker; Output meets the ability description file (ICD) of IEC61850 standard circuit breaker monitoring; System configuration device configuration through intelligent substation system integrator generates substation configuration description file (SCD) to the engineering staff according to the icd file of circuit breaker and bay device, and the configuration of intelligent interface device can download in the intelligent interface device with the configuration file (CFG) that installs and through local file service according to the description document (CID) that the SCD file decomposites after the configuration of circuit breaker.Intelligent assembly equipment is communicated by letter according to CID and cfg file completion and bay device.Therefore above-mentioned layoutprocedure and configuration file meet the IEC61850 standard, can carry out interoperability with the bay device that other producers meet IEC61850.
The circuit breaker intelligent assembly mainly comprises breaker operating characteristic supervision and Mechanical Failure Analysis, contact of breaker mechanical endurance, contact of breaker electric life, mechanism's energy storage monitoring etc.Realize the circuit breaker online automatic detection, have functions such as unusual warning automatically.According to measurement data, equipment state is carried out comprehensive assessment, improve the operation of power networks reliability.
1) stroke monitoring
For AIS; Grating angular displacement sensor is installed on the connecting lever of contact connecting rod in the breaker operation mechanism; For GIS, linear displacement transducer is installed on the connecting rod of contact of breaker, the differential pulse data wire of stroke sensor or 4 ~ 20mA analog data line are inserted on the terminal of operating mechanism monitoring assembly in the monitoring device; Connect the transducer power supply line that the operating mechanism monitoring assembly externally provides simultaneously; Through detecting the data variation of grating angular displacement sensor or linear displacement transducer, can be indirectly or directly record contact movement travel curve, calculate data such as branch wire time, stroke according to stroke curve.The increase reflection moving contact movement velocity of opening time and operating mechanism operate time descends; Moving contact speed descends then maybe be because the breaking coil operation irregularity (impedance big or coil short circuit is arranged), the release bite, fastening problem, the bearing wear of insufficient lubrication, element or block, energy-storage system (spring or pneumatic) pressure release etc. causes.
2) divide-shut brake coil current monitoring
The preposition unit of the current acquisition that Hall element is housed is installed on the guide rail in the breaker operation mechanism case; The power supply module that simultaneously preposition unit is needed is together installed, and the electric current line in circuit-breaker switching on-off loop is passed the Hall element hole, through 485 telecommunication cables; One end connects the preposition unit of current acquisition; The other end connects the operating mechanism monitoring assembly of monitoring device, and the preposition unit of current acquisition is gathered the Hall element coil current in real time, adopts the 20K sampling rate to communicate by letter with the operating mechanism monitoring assembly; The operating mechanism monitoring assembly is accomplished verification, the decoding of 485 packets, as sampled value input circuit breaker action decision logic judge module.Extract peak value, effective value parameter in the divide-shut brake coil current sampled value,, the quality of solenoid is made judgement, can remedy the deficiency that displacement transducer can't be installed to a certain extent through definite value, the configuration information of operating mechanism assembly stored.And and do not have between circuit breaker electric and contact directly, do not influence the action message of breaker operation mechanism.
3) supervision of energy storage motor monitoring breaker energy-storage system operation conditions depends on the supervision to the energy storage motor electric current, the monitoring of energy storage motor is directed against day energy storage number of times, the single energy storage time length of energy storage motor.If the energy storage cycle shortens, the single energy storage time is elongated, explains that then problem has appearred in energy-storage system, as oil circuit or gas circuit leak, the energy storage motor not enough pipeline of exerting oneself is smooth etc.Suppress frequency increase or the spring energy-storage faults such as predicting energy-storage system hydraulic oil is unclean, sealing valve port destroys and pumping system is unusual, spring mechanism abnormal state that wait not in place like oil pump.
At moment of electric motor starting heavy current impact once, along with the starting current of motor reduces rapidly, but along with the energy storage state variation of energy-stored spring; Current of electric strengthens gradually; After spring energy-storage was accomplished, contact broke off the motor power loop, and current of electric disappears.
Energy storage motor current monitoring in the monitoring device adopts Hall element equally; Monitoring used Hall element with the divide-shut brake coil current together is installed on the preposition unit of current acquisition; Accomplish integrated design; Save installing space in the operating mechanism, the current acquisition mode is the same with divide-shut brake coil current acquisition mode, accomplishes the energy storage motor current sample through the high speed serial ports.The energy storage motor voltage monitoring is realized through voltage sensor; The way of output is 485; Mounting means is that guide rail is installed; Through 485 communications components of 485 telecommunication cables connection monitoring device, 485 communications components send to the operating mechanism monitoring assembly with real-time detected energy storage motor voltage value through the CAN net in the monitoring device.The operating mechanism monitoring assembly is through the real-time sampling of energy storage motor electric current, voltage; Calculate parameters such as electric motor starting maximum impact electric current, running current, working voltage, running time, thereby judge whether energy-storage system exists the generation of situation such as motor idle running, card commentaries on classics.
4) position signalling monitoring
Adopt direct current 220V or 110V forceful electric power to open into test auxiliary switch position signalling, spring energy storage state not.Directly be connected through cable, with run-length data, current data synchronized sampling, according to position signalling and stroke curve computation of characteristic values, simultaneously with delivering to the monitoring backstage on the opening and closing state with the operating mechanism monitoring assembly of monitoring device.
5) divide-shut brake number of times monitoring
Through being installed in the counter sensor in the breaker operation mechanism; Adopt analog communication or digital communication mode to insert 485 communications components or the direct current monitoring assembly of monitoring device; Monitoring device is managed, is added up the divide-shut brake number of times, possesses the divide-shut brake of resetting number of times, transmits the IEC61850 function.
6) operating condition monitoring
Through being installed in the Temperature Humidity Sensor in the breaker operation mechanism; Adopt analog communication or digital communication mode to insert 485 communications components or the direct current monitoring assembly of monitoring device; The data that collect are carried out engineering value to convert; To deliver to the on-line monitoring backstage on the IEC61850 remote mode, monitor thereby accomplish the circuit breaker operating condition.
7) IEC61850 communication
The information management assembly is realized the IEC61850 communication function, possesses the MMS Ethernet interface, accomplishes ethernet communication with the on-line monitoring backstage, comprises IEC61850 storehouse, the real-time storehouse of information configuration, simulation to a storehouse and definite value.Comprise status monitoring calculated feature values, analysis result, device alarm and other quantity of states or analog signals in the real-time storehouse of information configuration; These signals are to go into real-time storehouse earlier to refresh IEC 61850 storehouses then, adopt the report service to deliver to client to these data.Simulation is used for the simulation of engineering debug process to point to the dot information storehouse, revises the content of simulation to a storehouse through debugging acid, refreshes the IEC61850 storehouse then.Device is supported client to serve through the definite value group and is read and revise definite value, the IEC inediting district, 61850 storehouse of client-access and the definite value value of Operational Zone, and device is accomplished the synchronous of IEC 61850 storehouses and definite value according to definite value group service specific instructions.Deliver to client on the mode of curve file through file service of status monitoring record.
More than describe the embodiment of the present invention in breaker mechanic property status monitoring process in detail.And scope of the present invention should not be limited to these descriptions.Any modification, improvement in principle of the invention scope all belongs to protection scope of the present invention.