CN105548874B - A kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter - Google Patents
A kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter Download PDFInfo
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- CN105548874B CN105548874B CN201511021575.2A CN201511021575A CN105548874B CN 105548874 B CN105548874 B CN 105548874B CN 201511021575 A CN201511021575 A CN 201511021575A CN 105548874 B CN105548874 B CN 105548874B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
Abstract
A kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter, including mechanical property Condition Monitoring Unit, SF6Gaseous state monitoring unit, arrester Condition Monitoring Unit, shelf depreciation Condition Monitoring Unit and information management unit.Between each monitoring unit and each monitoring unit and information management unit use plug-in type, carry out communication and data interaction by CAN net inside device and Ethernet.Apparatus of the present invention being capable of mechanical property state to Switch main body, SF6Gaseous state, arrester state and local discharge condition carry out comprehensive real time comprehensive on-line monitoring.According to the parameter information of switch state, fusion Analysis of Policy Making is made to the state of switch using fault diagnosis and Data fusion technique, obtains decision conclusions.Device can be communicated by IEC61850 specification and station level background monitoring system, will be sent in data and diagnostic result to background monitoring system, and generate diagnostic log and alarm signal.
Description
Technical field
The invention belongs to electric device monitoring technical field, it is related to a kind of comprehensive on-line monitoring of intelligent switch state and failure
Diagnostic device, especially suitable for the intelligent substation by the design of IEC61850 standard, the intelligent substation three-phase of 10KV or more
The synthesis on-line monitoring and fault diagonosing of linkage or three-phase split-phase switch state.
Background technique
In recent years, as the new energy such as photovoltaic, wind-powered electricity generation develop, national grid widelys popularize the construction of smart grid also to expire
The demand of sufficient new-energy grid-connected.High-voltage switch gear is mainly used for electric system and generates electricity, is defeated as smart grid important component
The electrical equipment for the effects of playing on-off, control or protection in electricity, distribution, electric energy conversion and consumption, the stability of operation are direct
Influence electric power netting safe running.In the environment of high voltage, high current, Switch main body material is in forceful electric power for high-voltage switch gear long-term work
It can deteriorate off field, furthermore its SF6Leakage phenomenon occurs for a long time for gas, and insulation performance and electric property is caused to decline.Root
It is counted according to switch failure over the years, switch is refused point, refuses conjunction, malfunction, SF6Gas leakage and the fault occurrence frequencies such as shelf depreciation compared with
Height, directly affects the stable operation of electric system, also brings serious economic loss.Therefore, to switch in operation into
Row on-line monitoring, grasps the operating status of switch in real time, finds potential faults in time, has to the stable operation of entire power grid deep
Remote meaning.
On-line monitoring technique relies on sensor technology and signal processing technology, passes through acquisition power equipment key position
Operation data analyzes and determines the operating condition of equipment in conjunction with advanced intelligent diagnosing method, examines the failure that may occur
Disconnected and early warning.The further development of accident had both been avoided in this way and has caused major accident, is also reduced unnecessary maintenance, is realized pre-
Intellectual is targetedly repaired.A kind of on-Line Monitor Device in real time, intelligent is developed, equipment operation condition is grasped, sends out in time
Existing potential faults take measures, and avoid accident further expansion, to ensure electric power netting safe running have far-reaching theory significance and
Extensive practical value.
It currently, switch on-Line Monitor Device type in the market is more, but is that function is relatively single mostly, i.e. a device
Can only monitoring switch a kind of state.If realizing more device cooperations of the comprehensive monitoring needs of each state of Switch main body, no
It is difficult only to configure complexity, higher cost, engineering construction, also largely occupies the use space of switch outdoor cabinet.
Summary of the invention
Based on the above-mentioned problems in the prior art, the invention proposes a kind of comprehensive on-line monitorings of intelligent switch state
With trouble-shooter, the comprehensive monitoring of switch integrality can be realized with a device.Intelligent switch state synthesis exists
Line monitoring and fault diagnosis device covers the monitoring content of switch integrality substantially, mainly includes mechanical property state, SF6
The on-line monitoring of gaseous state, arrester state and local discharge condition, can calculate the characteristic parameter of Switch main body, pass through event
Barrier diagnosis and Data fusion technique differentiate the fault condition and operating status of switch, issue alarm signal, and by fault parameter
Background monitoring system is uploaded to by Ethernet with Wave data.
The present invention specifically uses following technical scheme:
A kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter, including mechanical property Condition Monitoring Unit,
SF6Gaseous state monitoring unit, arrester Condition Monitoring Unit, shelf depreciation Condition Monitoring Unit and information management unit；Its
It is characterized in that:
Between each monitoring unit and each monitoring unit and information management unit use plug-in unit pattern, pass through on-line monitoring with therefore
CAN net and Ethernet carry out communication inside barrier diagnostic device and data interaction, information management unit pass through through Ethernet
Data are uploaded to substation's backstage monitoring system by IEC61850 communication protocol.
The present invention further comprises following preferred embodiment:
The mechanical property Condition Monitoring Unit includes mechanical property state sensor module and mechanical property data processing
Module, sensor module and mechanical property data processing module are connected by shielded cable.
Wherein, mechanical property state sensor module includes that stroke sensor, acceleration transducer, control loop coil are adopted
It storage, main circuit current collector and opens into signal access unit；Mechanical property state sensor module signal packet collected
It includes the Switch main body divide-shut brake stroke acquired by stroke sensor, moved by the Switch main body division that acceleration transducer acquires
Vibration signal when making, the control loop electric current measured by control loop coil collector and voltage pass through main circuit current
The major loop secondary side current and being opened into what signal access unit acquired into signal by opening, the mechanical property that collector acquires
State sensor module send the above-mentioned acquisition signal of acquisition to mechanical property data processing module.
The acquisition signal sent in mechanical property data processing module real-time reception machinery characteristic states sensor module, to it
In analog signal carry out A/D dress and change, digital signal is parsed, when switch motion, mechanical property data processing module can
Self-starting recording carries out recording, computational intelligence to each sensor according to the data variation of each sensor acquisition in action process
Switch point/combined floodgate stroke, point/closing time and point/the mechanical properties characteristic parameter such as closing coil electric current, and to intelligent switch
Mechanical property state carry out tentative diagnosis, will be sent on mechanical property state tentative diagnosis result and mechanical property characteristic parameter to
Information management unit.
The SF6Gaseous state monitoring unit includes SF6Sensor and SF6Data processing module, SF6Sensor and SF6Number
It is connected according to processing module by shielded cable；SF6SF in sensor measurement switching gas chamber6Gaseous state parameter, including SF6Gas
Body pressure, density, temperature and micro-water content；SF6Data processing module is to SF6Gaseous state carries out tentative diagnosis, by SF6Gas
State tentative diagnosis result and SF6It is sent in gaseous state parameter to information management unit.
The arrester Condition Monitoring Unit includes the preposition electric current of arrester, voltage acquisition module and arrester data processing
Module, the preposition electric current of the arrester, busbar voltage acquisition module are connected with arrester data processing module by shielded cable.
The preposition electric current of arrester, busbar voltage acquisition module acquire the leakage current and busbar voltage letter of arrester respectively
Number, by the data of acquisition and calculated arrester leakage parameters and busbar voltage parameter by sending on shielded cable to arrester
Data processing module, the parameter of the preposition electric current of arrester data processing module combination arrester, busbar voltage, calculates arrester
State parameter, including current in resistance property, capacity current and phase angle；And tentative diagnosis is carried out to the state of arrester, by arrester
It send on state tentative diagnosis result and arrester state parameter to information management unit.
The shelf depreciation Condition Monitoring Unit includes multiple type UHF sensors, acquisition module and PD data processing module；
Wherein, multiple type UHF sensors are separately mounted to the indoor different parts of breaker gas of intelligent switch, each type UHF sensor
Output end be connected with acquisition module using coaxial cable, acquisition module and PD data processing module by on-line monitoring with therefore
Ethernet is communicated inside barrier diagnostic device；Type UHF sensor receives the electromagnetic wave signal that shelf depreciation generates；Acquisition module is complete
At the acquisition of Partial discharge signal, and accesses power frequency synchronizing signal and be associated with Partial discharge signal with power-frequency voltage signal and send to partial discharge data
Processing module；After PD data processing module receives Partial discharge signal and power-frequency voltage signal, partial discharge characteristic parameter is calculated, and right
The shelf depreciation of intelligent switch carries out tentative diagnosis, will send in shelf depreciation tentative diagnosis result and partial discharge characteristic parameter to information
Administrative unit.
Information management unit and each monitoring unit are communicated by Ethernet and CAN net, and manage each monitoring unit；Letter
Breath administrative unit receives the tentative diagnosis result sent on each monitoring unit and corresponding state parameter, to the failure of intelligent switch
State makes comprehensive descision.
Information management unit is communicated through Ethernet by IEC61850 specification and station level background monitoring system, by each monitoring
It send on the tentative diagnosis result of unit and corresponding state parameter to background monitoring system, and generates diagnostic log and alarm letter
Number.
The comprehensive on-line monitoring of intelligent switch state can configure work by the intelligent assembly that the end PC is developed with trouble-shooter
Tool freely configures the selection of monitoring function module and monitoring quantity, generates on-line monitoring and trouble-shooter by configuration tool
61850 configuration files and model file of standard import the information of on-line monitoring with trouble-shooter finally by FTP tool
Administrative unit；Information management unit carries out parameter configuration to each monitoring unit according to configuration file, according to 61850 model files
Information point configuration can background monitoring system communication.
A kind of comprehensive on-line monitoring of intelligent switch state of the present invention and trouble-shooter, advantages and beneficial effects are such as
Under:
1, the comprehensive on-line monitoring of intelligent switch state and trouble-shooter can mechanical property state to Switch main body,
SF6Gaseous state, arrester state and local discharge condition carry out comprehensive real time on-line monitoring.
2, the comprehensive on-line monitoring of intelligent switch state and trouble-shooter integrated level are high, can select to open according to requirement of engineering
It closes the state for needing to monitor and carries out flexible configuration, save the use space of outdoor cabinet, reduce engineering cost, it is real convenient for engineering
It applies.
3, it is analyzed by the parametric synthesis of each monitoring unit, using D-S evidence fusion diagnostic techniques to the failure shape of switch
State makes decisions analysis, evaluates the health status of switch.
4, each monitoring unit of device uses plug-in type, is communicated by core bus and information management unit, device
Configuration flexibly, can monitor the switch of three-phase ganged and three-phase split-phase operating mechanism.Device can go out 61850 models, convenient for networking and
Station level communication.
Detailed description of the invention
The structural block diagram of Fig. 1 intelligent switch state of the present invention comprehensive on-line monitoring and trouble-shooter；
Data fusion diagnostic flow chart Fig. 2 of the invention.
Specific embodiment
It is clear to be more clear goal of the invention of the invention, technology path and beneficial effect, now in conjunction with attached drawing and specifically
Embodiment further illustrates that specific implementation is not construed as limiting the invention.
As shown in Figure 1, the comprehensive on-line monitoring of intelligent switch state and trouble-shooter include mechanical property status monitoring
Unit, SF6Gaseous state monitoring unit, arrester Condition Monitoring Unit, shelf depreciation Condition Monitoring Unit and information management list
Member.Between each monitoring unit and each monitoring unit and information management unit are communicated by CAN net inside device and Ethernet
And data are uploaded to substation backstage by IEC61850 communication protocol through Ethernet and monitored by data interaction, information management unit
System.The structure and realization function of each unit are specific as follows:
One, mechanical property Condition Monitoring Unit.Mechanical property Condition Monitoring Unit includes mechanical property state sensor mould
Block and mechanical property data processing module, sensor module and mechanical property data processing module are special using shielded cable and machinery
Property data processing module be connected.Wherein, sensor module includes that stroke sensor, acceleration transducer, control loop coil are adopted
It storage, main circuit current collector and opens into signal；Mechanical property data processing module is located in device, by core processor
DSP and application circuit processing module are constituted.Mechanical property status monitoring implementation method and operation logic are as follows:
Stroke sensor selects raster rotary coder, is mounted on the shaft side of Switch main body, and switch carries out opening and closing movement
When, the linear motion of moving contact is converted to rotary motion by connecting lever.Pass through the data of the corner during record switch motion
Variation, can reflect the motion conditions of moving contact.422 differential pulse signals are exported in stroke sensor rotation process, will be switched
Run-length data be converted into pulse code signal, reach mechanical property data processing module acquisition process.
Acceleration transducer selects Biaxial Compressive electric-type acceleration transducer, is mounted near Switch main body operating mechanism, can
The vibration signal on operating mechanism is monitored, vibration signal is converted into current signal, is transferred at mechanical property data processing module
Reason.
Control loop coil collector and main circuit current collector are mounted in the outdoor cabinet near switch, and cocoa is adopted
Collect the voltage and current signals in divide-shut brake circuit, the voltage of energy storage motor coil, current signal and major loop secondary side current letter
Number, the processing of mechanical property data processing module is uploaded to by 485 buses.
It opens and is drawn into signal by switch auxiliary contact, the current location status of reactive switches, accessing voltage range is
DC220V。
Mechanical property data processing module is communicated by core bus, and device configuration flexibly, can monitor three-phase ganged
With the switch of three-phase split-phase operating mechanism.When monitoring three-phase ganged structure, one piece of mechanical property data processing module is configured, accordingly
Sensor configuration it is a set of；When monitoring three-phase split-phase switch, three pieces of mechanical property data processing modules, corresponding sensor are configured
Three sets of configuration.
Mechanical property data processing module acquires the data of sensor module in real time, when switch motion, according to each sensor
Data variation using recording start distinguished number；When meeting entry condition, device carries out recording to each sensing data；So
Afterwards, the mechanical property characteristic parameter of switch is calculated according to the data of stroke, control loop electric current and voltage channel, is such as divided/is closed a floodgate
Stroke, point/closing time, point/closing coil electric current and voltage etc..Switch is calculated by the vibration data of acceleration transducer acquisition
The characteristic parameters such as frequency, peak value and the time of vibration.When switch carries out separating brake movement, it is single that switch is calculated by main circuit current data
Secondary electrical wear and accumulation electrical wear, evaluate the remaining electric life of switch, make tentative diagnosis to the mechanical property state of switch, and
It will send on characteristic parameter and diagnostic result to information management unit.
Two, SF6Gaseous state monitoring unit.
SF6Gaseous state monitoring unit includes SF6Sensor and SF6Data processing module is connected by shielded cable.SF6
Sensor can measure the SF in switching gas chamber6The parameters such as gas pressure, density, temperature and micro-water content.SF6Data processing module
The SF of modbus specification and 4~20mA signal can be connected6Sensor.Its implementation and operational process are as follows:
SF6Sensor is mounted on Switch main body gas chamber, is connected by communicating valve and gas chamber, can measure in switching gas chamber
SF6 gas pressure, density, temperature and micro-water content.SF6Sensor has meter, can read pressure value on the spot, pass through simultaneously
Parameter is reached SF by 485 buses6Data processing module.It, can be directly total by 485 when connecting the sensor of modbus specification
Line and SF6Data processing module communication；Such as use the SF of 4~20mA analog signal6When sensor, configuring direct current acquisition module is needed
A/D conversion is carried out, then send data to SF6Data processing module processing.
SF6Data processing module uses master slave communication mode, to each SF6Sensor poll reading, each sensor according to
Address distinguishes.When connecting the sensor of modbus specification, SF6Data processing module maximum can connect 256 sensors；
The sensor of 4~20mA signal is such as configured, depending on the maximum number of connection is according to the quantity of DC Module.SF6Data processing mould
Root tuber is according to SF6Gas parameter, to SF6Gaseous state carries out tentative diagnosis, will send on diagnostic result and state parameter to information management
Unit.
Three, arrester Condition Monitoring Unit.
Arrester Condition Monitoring Unit includes the preposition electric current of arrester, busbar voltage acquisition module and arrester data processing
Module, module are connected by shielded cable.The preposition electric current of arrester, busbar voltage acquisition module acquire the leakage of arrester respectively
Electric current and major loop secondary side voltage signal join acquisition data and calculated leakage current of an arrester parameter and busbar voltage
Number result in 485 buses by sending to arrester data module.The processing of arrester data module receives data, and further counts
The state parameter for calculating arrester carries out tentative diagnosis to the state of arrester, will send on diagnostic result and state parameter to information
Administrative unit.Its implementation is as follows with operational process:
The preposition current acquisition module of arrester and busbar voltage acquisition module are mounted on Switch main body, preposition current module
Inside is using the leakage total current of Hall coil part acquisition arrester, and busbar voltage inside modules are using voltage transformer acquisition
Major loop secondary side voltage signal.Wherein, the preposition current module of arrester is configured according to arrester number；Due to same
Identical every interior voltage-phase, busbar voltage acquisition module can be configured by interval, i.e., a busbar voltage acquisition module can be right
Answer multiple preposition current acquisition modules.
The timing of arrester data processing module to preposition current acquisition module and busbar voltage acquisition module issue synchronize adopt
Sample pulse signal.After preposition current acquisition module and busbar voltage acquisition module receive sampling synchronization pulse, starting sampling
Process, the two calculate the leakage total current virtual value and busbar voltage virtual value and harmonic wave point of arrester according to acquisition data
Amount, and the locking phase of electric current and voltage relative to sampling pulse is calculated separately out, and calculating parameter is uploaded through shielded cable
To arrester data processing module.Arrester data processing module calculates the current in resistance property of arrester according to the data above sent
With the parameters such as capacity current, and tentative diagnosis is carried out according to malfunction of the state parameter of arrester to arrester, will diagnosed
As a result with sent on state parameter to information management unit.
Four, shelf depreciation Condition Monitoring Unit.
Shelf depreciation Condition Monitoring Unit includes multiple type UHF sensors, acquisition module and PD data processing module.Its
In, type UHF sensor is connected with acquisition module using coaxial cable, and acquisition module and partial discharge processing module pass through ether inside device
Net is communicated.Its implementation is as follows with operation logic:
Type UHF sensor is mounted in the gas chamber of Switch main body, close to the position of switch contact, for collecting electric discharge generation
Electromagnetic wave signal.The Partial discharge signal that type UHF sensor receives reaches acquisition module through coaxial cable, and each acquisition module can connect two
A channel such as monitors the Partial discharge signal in multiple channels simultaneously, needs to configure multiple acquisition modules, while acquisition also needs access 50Hz
Power frequency synchronizing signal, with association Partial discharge signal and power frequency component phase.
Acquisition module is timed poll acquisition discharge data to multiple channels, and the power frequency component of acquisition is reached together
PD data processing module.After partial discharge processing module receives discharge signal, the extraction of partial discharge pulse signal is carried out, according to extraction
Pulse signal out calculates partial discharge characteristic parameter, is diagnosed to be shelf depreciation type and the Position Approximate of defect occurs.Finally, by former
The information such as beginning discharge data, characteristic parameter and diagnostic result are sent to information management unit.
Five, information management unit
Information management unit is made of core processor ARM and each monitoring unit module is carried out by Ethernet and CAN net
Communication, and manage each monitoring unit.After information management unit receives the data sent on each monitoring unit, using data fusion skill
Art makes fusion Analysis of Policy Making to the malfunction to switch, obtains decision conclusions.Information management unit passes through through Ethernet
IEC61850 specification and the communication of station level background monitoring system, will send to background monitoring system, and raw in data and diagnostic result
At diagnostic log and alarm signal.
The comprehensive on-line monitoring of intelligent switch state can be by intelligent assembly configuration tool to function with trouble-shooter
Module and monitoring information point freely configure, and by 61850 configuration files and model file of configuration tool generating means, finally lead to
Cross the information management unit of FTP tool gatherer.Information management unit carries out parameter to each monitoring unit according to configuration file
Configuration, can background monitoring system communication according to the configuration of the information point of 61850 model files.
As shown in Fig. 2, the comprehensive on-line monitoring of intelligent switch state is as follows with the diagnosis algorithm of trouble-shooter:
The first step, data acquisition.By the sensor being mounted on Switch main body, the status information of Switch main body is collected,
Acquire the data of each sensor in real time, when switch motion, the change of each sensing data of mechanical property state during operation of recording
Change.
Second step, data processing.The data processing module of each monitoring unit receives the data of sensor, according to each state
Parameter information, data are pre-processed, the information characteristics parameter of reactive switches state are extracted, as follow-up diagnosis according to
According to.
4th step, tentative diagnosis.Threshold values judgment method is used to monitoring unit, respective malfunction is determined, provides
Tentative diagnosis result.
5th step, decision level fusion diagnosis.Information management unit according to the characteristic parameter that is sent in each Condition Monitoring Unit and
Tentative diagnosis is as a result, carry out integrated decision-making judgement.
Claims (8)
1. a kind of comprehensive on-line monitoring of intelligent switch state and trouble-shooter, including mechanical property Condition Monitoring Unit, SF6
Gaseous state monitoring unit, arrester Condition Monitoring Unit, shelf depreciation Condition Monitoring Unit and information management unit；Its feature
It is:
Between each monitoring unit and each monitoring unit and information management unit use plug-in unit pattern, are examined by monitoring on-line with failure
CAN net and Ethernet carry out communication and data interaction inside disconnected device, and information management unit is logical by IEC61850 through Ethernet
Believe that data are uploaded to substation's backstage monitoring system by specification；
The mechanical property Condition Monitoring Unit includes mechanical property state sensor module and mechanical property data processing module,
Sensor module is connected with mechanical property data processing module by shielded cable；
Wherein, mechanical property state sensor module includes stroke sensor, acceleration transducer, the acquisition of control loop coil
It device, main circuit current collector and opens into signal access unit；Mechanical property state sensor module signal collected includes
The Switch main body divide-shut brake stroke acquired by stroke sensor, the Switch main body division movement acquired by acceleration transducer
When vibration signal, the control loop electric current that is measured by control loop coil collector and voltage, adopted by main circuit current
The major loop secondary side current and being opened into what signal access unit acquired into signal by opening, the mechanical property shape that storage acquires
State sensor module send the above-mentioned acquisition signal of acquisition to mechanical property data processing module；
Wherein, the stroke sensor uses raster rotary coder, is mounted on the shaft side of Switch main body, is opened and closed
When movement, the linear motion of moving contact is converted to rotary motion by connecting lever, passes through the corner during record switch motion
Data variation reflects the motion conditions of moving contact, 422 differential pulse signals is exported in stroke sensor rotation process, will open
The run-length data of pass is converted into pulse code signal, reaches mechanical property data processing module acquisition process；
Acceleration transducer uses Biaxial Compressive electric-type acceleration transducer, is mounted near Switch main body operating mechanism, monitoring behaviour
Vibration signal is converted into current signal by the vibration signal on motivation structure, and mechanical property data processing module is transferred to handle；
Control loop coil collector and main circuit current collector are mounted in the outdoor cabinet near switch, can acquire division
The voltage and current signals in lock circuit, the voltage of energy storage motor coil, current signal and major loop secondary side current signal, pass through
485 buses are uploaded to the processing of mechanical property data processing module；
It opens and is drawn into signal by switch auxiliary contact, the current location status of reactive switches, access voltage range is DC220V；
Mechanical property data processing module is communicated by core bus, monitors three-phase ganged and three-phase split-phase operating mechanism
Switch when monitoring three-phase ganged structure, configures one piece of mechanical property data processing module, and corresponding sensor configuration is a set of；Prison
When surveying three-phase split-phase switch, three pieces of mechanical property data processing modules are configured, corresponding sensor configures three sets；
Mechanical property data processing module acquires the data of sensor module in real time, when switch motion, according to the number of each sensor
Distinguished number is started using recording according to variation；When meeting entry condition, device carries out recording to each sensing data；Then, root
The mechanical property characteristic parameter of switch is calculated according to the data of stroke, control loop electric current and voltage channel, including divides/close a floodgate row
Journey, point/closing time, point/closing coil electric current and voltage；Switch vibration is calculated by the vibration data of acceleration transducer acquisition
Frequency, peak value and time characteristic parameters；When switch carries out separating brake movement, switch single electric mill is calculated by main circuit current data
Damage and accumulation electrical wear, evaluate the remaining electric life of switch, make tentative diagnosis to the mechanical property state of switch, and by feature
It is sent in parameter and diagnostic result to information management unit.
2. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
The acquisition signal sent in mechanical property data processing module real-time reception machinery characteristic states sensor module, to therein
Analog signal carries out A/D dress and changes, and parses to digital signal.
3. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
The SF6Gaseous state monitoring unit includes SF6Sensor and SF6Data processing module, SF6Sensor and SF6At data
Module is managed to be connected by shielded cable；SF6SF in sensor measurement switching gas chamber6Gaseous state parameter, including SF6Gas pressure
Power, density, temperature and micro-water content；SF6Data processing module is to SF6Gaseous state carries out tentative diagnosis, by SF6Gaseous state
Tentative diagnosis result and SF6It is sent in gaseous state parameter to information management unit.
4. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
The arrester Condition Monitoring Unit includes the preposition electric current of arrester, voltage acquisition module and arrester data processing mould
Block, the preposition electric current of the arrester, busbar voltage acquisition module are connected with arrester data processing module by shielded cable；
The preposition electric current of arrester, busbar voltage acquisition module acquire the leakage current and bus voltage signal of arrester respectively, will
The data of acquisition and calculated arrester leakage parameters and busbar voltage parameter on shielded cable by sending to arrester data
Processing module, the parameter of the preposition electric current of arrester data processing module combination arrester, busbar voltage, calculates the shape of arrester
State parameter, including current in resistance property, capacity current and phase angle；And tentative diagnosis is carried out to the state of arrester, by arrester state
It send on tentative diagnosis result and arrester state parameter to information management unit.
5. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
The shelf depreciation Condition Monitoring Unit includes multiple type UHF sensors, acquisition module and PD data processing module；Its
In, multiple type UHF sensors are separately mounted to the indoor different parts of breaker gas of intelligent switch, each type UHF sensor
Output end is connected with acquisition module using coaxial cable, and acquisition module and PD data processing module pass through on-line monitoring and failure
Ethernet is communicated inside diagnostic device；Type UHF sensor receives the electromagnetic wave signal that shelf depreciation generates；Acquisition module is completed
The acquisition of Partial discharge signal, and access power frequency synchronizing signal and be associated with Partial discharge signal with power-frequency voltage signal and give to partial discharge data
Manage module；After PD data processing module receives Partial discharge signal and power-frequency voltage signal, partial discharge characteristic parameter is calculated, and to intelligence
The shelf depreciation that can be switched carries out tentative diagnosis, will send in shelf depreciation tentative diagnosis result and partial discharge characteristic parameter to message tube
Manage unit.
6. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
Information management unit and each monitoring unit are communicated by Ethernet and CAN net, and manage each monitoring unit；Message tube
Reason unit receives the tentative diagnosis result sent on each monitoring unit and corresponding state parameter, to the malfunction of intelligent switch
Make comprehensive descision.
7. the comprehensive on-line monitoring of intelligent switch state according to claim 6 and trouble-shooter, it is characterised in that:
Information management unit is communicated through Ethernet by IEC61850 specification and station level background monitoring system, by each monitoring unit
Tentative diagnosis result and corresponding state parameter on send to background monitoring system, and generate diagnostic log and alarm signal.
8. the comprehensive on-line monitoring of intelligent switch state according to claim 1 and trouble-shooter, it is characterised in that:
The comprehensive on-line monitoring of intelligent switch state and trouble-shooter can be by intelligent assembly configuration tools pair that the end PC is developed
The selection of monitoring function module and monitoring quantity freely configure, and the standard of on-line monitoring with trouble-shooter is generated by configuration tool
61850 configuration files and model file, import on-line monitoring and the information management of trouble-shooter finally by FTP tool
Unit；Information management unit carries out parameter configuration to each monitoring unit according to configuration file, according to the information of 61850 model files
Point configuration background monitoring system communication.
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| CN105911445A (en) * | 2016-07-01 | 2016-08-31 | 河北箱变电器有限公司 | Partial discharge and temperature monitoring device for power system |
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