CN205829450U - A kind of high voltage transducer power unit and cascaded high-voltage frequency converter - Google Patents
A kind of high voltage transducer power unit and cascaded high-voltage frequency converter Download PDFInfo
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- CN205829450U CN205829450U CN201620665621.6U CN201620665621U CN205829450U CN 205829450 U CN205829450 U CN 205829450U CN 201620665621 U CN201620665621 U CN 201620665621U CN 205829450 U CN205829450 U CN 205829450U
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Abstract
This utility model belongs to power electronics diagnostic techniques field, disclose a kind of high voltage transducer power unit, including the first data-interface and the first power supply interface, described first data-interface is for realizing data exchange with high voltage transducer power unit remote failure diagnosis system, described high voltage transducer power unit, for electrically connected with high voltage transducer power unit remote failure diagnosis system, is powered by described first power supply interface by high voltage transducer power unit remote failure diagnosis system；Described high voltage transducer power unit remote failure diagnosis system includes the second corresponding with described first data-interface and the first power supply interface respectively data-interface and the second power supply interface.The high voltage transducer power unit that this utility model provides coordinates power cell remote failure diagnosis system, has evaded high pressure string electric pathway by the conversion of the signal of telecommunication Yu optical signal from Diagnosis System, serves the effect of isolation high pressure.This utility model additionally provides corresponding cascaded high-voltage frequency converter.
Description
Technical field
This utility model belongs to power electronics diagnostic techniques field, more particularly, to a kind of high voltage frequency converter power list
Unit and cascaded high-voltage frequency converter.
Background technology
Power cell is the high voltage converter parts using power power electronic device to carry out rectification, filtering, inversion.Power
Unit is the major part constituting high voltage converter major loop.Cell level connection type high-voltage frequency converter, as it is shown in figure 1, its three-phase is defeated
Go out voltage U, V, W to be serially connected superposition by the output voltage of internal multiple low pressure and low power unit Unit 1 to Unit N respectively and obtain
Arrive；Forming high potential owing to the electromotive force of high voltage transducer power unit is cumulative mutually after series connection, common test instrunment equipment can not
Accomplishing safe electrical isolation, engineer cannot run with monitoring it in on-line testing, brings a lot to the on-the-spot test of equipment
Inconvenience.So prior art uses the method that the most each power cell carries out on-line testing respectively, it mainly has single merit
In rate unit low pressure, on electrical testing and complete machine, high-tension electricity and each power cell are not connected two kinds of methods of test, but above two is surveyed
Examination mode is required for the much information measured needed for repeated disassembled and assembled just can obtain it by substantial amounts of test instrunment.Due to height
Voltage frequency changer breaks down at user's onsite application, and user will not configure a large amount of test instrunment and place scene, so user oneself
Inspection and maintenance high voltage converter is difficult to the most clearly location high voltage converter malfunction.Specialized factory is equipped with special instrument and is used for
High voltage converter dispatches from the factory debugging, and it is also very inconvenient for carrying in-site measurement high voltage converter malfunction, and in-site measurement
Place, power-up conditions are the most restricted, are i.e. that to detect measurement high voltage converter fault be also to be difficult to successfully to specialized maintenance personnel.
Therefore the method utilizing high speed fibre on-line testing power cell shown in prior art many employings Fig. 1, Mei Yixiang
Power cell Unit 1 to Unit N completely connect, upper high-tension electricity runs, and the service data of all power cells is by it
Portion's chip output, more all it is uploaded to master control system by high speed fibre；On-the-spot test personnel utilize host computer diagnostic system to lead to
Cross data wire/netting twine to read the data transmitted on corresponding unit in master control system and carry out test monitoring, but master control in the method
The data processing amount of system is big, and requires that the master control system of whole high-voltage inverter device normally works and each power cell
Not having critical failure just can carry out, therefore the method there is also serious shortcoming.It is thus desirable to provide a kind of novel can be real
The now high voltage transducer power unit of remotely diagnosis.
Utility model content
The shortcomings and deficiencies existed for prior art, this utility model provide a kind of high voltage transducer power unit and
Cascaded high-voltage frequency converter, after solving prior art medium-high voltage frequency converter power cell failure, needs to send specialized engineering
Teacher carries the shortcoming that a large amount of special instrument carries out diagnosing, safeguarding to scene.Utilize technical scheme provided by the utility model, can
To make full use of rear expert team resource, rear special instrument, quickly analyzing site problems, guide field maintenance of equipment is tieed up
Protect, save maintenance of equipment time and expense, it is achieved resource-sharing, improve resource utilization, it is achieved the Internet+maintenance of equipment.
To achieve these goals, this utility model provides a kind of high voltage transducer power unit, including the first data
Interface and the first power supply interface, described first data-interface is for real with high voltage transducer power unit remote failure diagnosis system
Existing data exchange, described first power supply interface is used for electrically connected with high voltage transducer power unit remote failure diagnosis system,
By high voltage transducer power unit remote failure diagnosis system, described high voltage transducer power unit is powered；Described high pressure
Transducer power unit remote failure diagnosis system includes relative with described first data-interface and the first power supply interface respectively
The second data-interface answered and the second power supply interface.
In an embodiment of the present utility model, described first power supply interface is three ac high voltage input terminals.
In an embodiment of the present utility model, described first power supply interface is for long-range with high voltage transducer power unit
Second power supply interface of fault diagnosis system is electrically connected, provides three-phase phase difference for described high voltage transducer power unit
The three phase mains of 120 degree.
In an embodiment of the present utility model, the voltage source virtual value maximum of described three phase mains is less than 720 volts
Special.
In an embodiment of the present utility model, described first data-interface is photoelectric conversion interface.
In an embodiment of the present utility model, described photoelectric conversion interface is transmitting-receiving separately photoelectric conversion interface.
In an embodiment of the present utility model, described first data-interface is by optical fiber and described high voltage frequency converter power
Second data-interface of unit remote failure diagnosis system is connected.
In an embodiment of the present utility model, described optical fiber is plastic optical fiber.
In an embodiment of the present utility model, described second power supply interface provides for described high voltage transducer power unit
Three-phase phase differs the three phase mains of 120 degree, and its line voltage source virtual value maximum is less than 720 volts；Described second data
Interface is photoelectric conversion interface.
According to another aspect of the present utility model, additionally provide a kind of cascaded high-voltage frequency converter, including one or more
Above-mentioned high voltage transducer power unit.
From technique scheme it can be seen that this utility model provide high voltage transducer power unit, it is possible to diagnosis
System is connected, and utilizes diagnostic system exclusive three phase supply unit to being diagnosed power cell and powering.Field failure power cell leads to
Crossing self photoelectric conversion unit and collection in worksite system input photoelectric conversion unit, to realize information mutual, collection in worksite system with
Fault power unit realizes high-low voltage by optical fiber isolates, it is ensured that fault detect safety.Collection in worksite system passes through wireless network
Network interface utilizes public wireless network to be connected with remote back-office diagnostic system, it is achieved remotely diagnostic detection fault, it is ensured that converter
Power cell fault quick and precisely detects, and makes full use of factory repair resource and quickly positions fault, saves equipment repair time.This
Ground information gathering calculates the most in real time and is diagnosed power cell DC bus-bar voltage, makes to be diagnosed power cell DC bus-bar voltage
Reaching particular value, collection in worksite system sends instruction stopping three phase supply cell voltage and increases, and makes three phase supply unit keep working as
Front supply voltage.Collection in worksite system connects remote back-office specialty Mishap Database by wireless output unit, it is ensured that diagnosis system
Unite normal with remote back-office professional test data communication.Collection in worksite system sends lasting preset signals to being diagnosed power list
Unit, receives simultaneously and is diagnosed the test data that power cell transmits, and collection in worksite system receives the survey being diagnosed power cell
After examination data, after default process, persistently passing to backstage diagnostic system, backstage diagnostic system processes through information analysis
After, compare with the fault in Mishap Database, identify the fault being diagnosed power cell.Backstage diagnostic system is knowing
The information that is not out of order returns to collection in worksite system by wireless transmission unit, and data are resolved and show by collection in worksite system
Show the display screen of acquisition system at the scene, carry out studying, analyze and processing for Field Force.Use this utility model technology fall
Low field maintenance person's professional standards required, before Field Force do not utilizes this technology, need repeatedly to go up high-tension electricity, need simultaneously
The whole device of high voltage converter to be utilized, whole control system, host computer monitoring system and substantial amounts of supplementary instrument instrument (as
The instrument such as circuit tester, oscillograph) could find and judgement is diagnosed power cell fault；Therefore, this utility model technology is used
Improve fault power unit diagnosis reliability, safety, convenience and agility, method, apparatus money after utilizing the most to greatest extent
Source, human resources, improve resource utilization, meets country and utilizes Internet technology development to share economic policy.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings；
Fig. 1 is the structural representation of universal power unit remote failure diagnosis system disclosed in prior art；
Fig. 2 is the structural representation of a kind of high voltage transducer power unit disclosed in this utility model embodiment；
Fig. 3 is the knot of a kind of high voltage transducer power unit remote failure diagnosis system disclosed in this utility model embodiment
Structure schematic diagram；
Fig. 4 is a kind of high voltage transducer power unit remote failure diagnosis system disclosed in another embodiment of this utility model
Structural representation.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.Additionally, in each embodiment of this utility model disclosed below
Just can be mutually combined as long as involved technical characteristic does not constitutes conflict each other.
As in figure 2 it is shown, the utility model discloses a kind of high voltage transducer power unit, including the first data-interface and the
One power supply interface, described first data-interface is handed over for realizing data with high voltage transducer power unit remote failure diagnosis system
Changing, described first power supply interface is for electrically connected with high voltage transducer power unit remote failure diagnosis system, by high voltage variable
Frequently described high voltage transducer power unit is powered by device power cell remote failure diagnosis system；Described high voltage converter merit
Rate unit remote failure diagnosis system includes respectively corresponding with described first data-interface and the first power supply interface second
Data-interface and the second power supply interface.
Preferably, described first power supply interface is three ac high voltage input terminals.Described first power supply interface is used for
Electrically connected with the second power supply interface of high voltage transducer power unit remote failure diagnosis system, for described high voltage converter merit
Rate unit provides the three phase mains that three-phase phase differs 120 degree.And the voltage source virtual value of described three phase mains is the most very much not
More than 720 volts.
Further, described first data-interface is photoelectric conversion interface.Preferably, described photoelectric conversion interface is transmitting-receiving
Separately photoelectric conversion interface.
Further, described first data-interface is by optical fiber and described high voltage transducer power unit remote fault diagnosis
Second data-interface of system is connected.Preferably, described optical fiber is plastic optical fiber.
Further, described second power supply interface provides three-phase phase difference 120 for described high voltage transducer power unit
The three phase mains of degree, its line voltage source virtual value maximum is less than 720 volts；Described second data-interface is that opto-electronic conversion connects
Mouthful.
Further, this utility model additionally provides a kind of cascaded high-voltage frequency converter, including one or more above-mentioned
High voltage transducer power unit.
High voltage transducer power unit in order to provide this utility model carries out fault diagnosis, as it is shown on figure 3, this practicality
Novel additionally provide a kind of high voltage transducer power unit remote failure diagnosis system, be applied to chain structure high voltage converter
The long-range diagnosis of fault power unit, including collection in worksite system 2, data transmission system 3 and backstage diagnostic system 4, wherein:
Described collection in worksite system 2, drives described fault for the diagnosis sign on issued according to backstage diagnostic system 4
System 1 is run, and the test data of collection are sent to described backstage diagnostic system 4, and receives backstage diagnostic system according to institute
State the fault message of described failure system 1 obtained by test data diagnosis；Described collection in worksite system 2 includes power supply unit
21, for the second photoelectric conversion unit 22 received and sent messages, information process unit 23, collection in worksite system wireless transmission unit 24
With collection in worksite system 2 display unit 25, wherein:
Said supply unit 21, differs 120 degree for carrying three-phase phase for described failure system, line voltage source virtual value
It it is the 0～720V adjustable alternating current power supply of AC.
Described second photoelectric conversion unit 22, interconnects for the first photoelectric conversion unit 12 with described failure system 1.With
In receiving the optical signal sent from the first photoelectric conversion unit 12 of failure system 1, described optical signal is converted into the signal of telecommunication
It is sent to described information process unit 23；And the signal of telecommunication that information process unit 23 is issued is converted into optical signal is sent to institute
State the first photoelectric conversion unit 12 of failure system；Wherein, the input of described second photoelectric conversion unit 22 and the first photoelectricity
The outfan of converting unit 12 is connected；The outfan of the second photoelectric conversion unit 22 and the input of the first photoelectric conversion unit 12
It is connected；Specifically, (plastics) optical fiber can be used to be connected.
Described information process unit 23, for performing diagnosis sign on that backstage diagnostic system 4 sends and producing driving
The signal of telecommunication that fault power unit in failure system runs, is sent to described second photoelectric conversion unit by the described signal of telecommunication
22；And the letter of the first photoelectric conversion unit 12 transmission from failure system 1 is received by described second photoelectric conversion unit 22
Number, thus generate test data；
Described collection in worksite system wireless transmission unit 24, is that collection in worksite system 2 carries out data with data transmission system 3
The interface of transmission；For receiving diagnosis sign on that backstage diagnostic system 4 sends and being sent to described information process unit 23,
Receive status information and the diagnostic result (i.e. the fault message of failure system 1) of backstage diagnostic system 4 of backstage diagnostic system 4
It is sent to described collection in worksite system display unit 25；And the test data that described information process unit 23 generates are passed through data
Transmission system 3 is sent to backstage diagnostic system 4；
Described collection in worksite system display unit 25, for showing the status information of described failure system 1, collection in worksite
The status information of system 2 and the status information of backstage diagnostic system 4, and the diagnostic result of described backstage diagnostic system 4；
Described data transmission system 3, for realizing the data exchange between collection in worksite system 2 and backstage diagnostic system 4,
Usually public wireless data transmission network；Collection in worksite system 2 and backstage diagnosis system is realized by public wireless data transmission network
Bidirectional data transfers between system 4, test data collection in worksite system 2 gathered send backstage diagnostic system 4 to, and receive
The fault message that backstage diagnostic system 4 feeds back after test data are processed and diagnosed；Use General Mobile wireless network, tool
There are versatility and convenience；
Described backstage diagnostic system 4, drives described failure system 1 to run for issuing to described collection in worksite system 2
Diagnosis sign on, receives the test data of the failure system 1 that described collection in worksite system 2 gathers, according to described test data
Obtain the fault message of described failure system 1 after processing and diagnosing, and described fault message is sent to described scene adopts
Collecting system 2, described backstage diagnostic system 4 include backstage diagnostic system wireless transmission unit 41, data center processing unit 42, after
Platform diagnosis unit 43 and backstage diagnostic system display unit 44, wherein:
Described backstage diagnostic system wireless transmission unit 41, carries out data for backstage diagnostic system 4 and data transmission system 3
The interface of exchange, for being transferred to data center processing unit 42 by the test data being received from collection in worksite system 2, and by number
The diagnosis sign on assigned to collection in worksite system 2 according to CPU 42, the status information of backstage diagnostic system 4 and
The fault message that diagnosis unit 43 diagnosis obtains is sent to described collection in worksite system 2 by described data transmission system 3；
Described data center processing unit 42, for assigning the fault merit in driving malfunction system to collection in worksite system 2
The diagnosis sign on that rate unit runs, and by the status information of backstage diagnostic system 4, wireless by described backstage diagnostic system
Transmission unit 41 is sent to described collection in worksite system 2；
Described backstage diagnosis unit 43, for the test data received are compared with the fault in Mishap Database,
Judge the fault message that described failure system is occurred, obtain diagnostic result；
Such as, be briefly described below power cell exist part major failure and countermeasure:
One, unit driving malfunction
(1) testing goal prevention unit is faulty at drive circuit, IGBT is faulty, under external short circuit or over-current state
Work, causes fault to expand further.
(2) failure cause and countermeasure
Reason 1: outside unit output overcurrent or unit, short-circuit conditions occurs.
Countermeasure: check and be loaded with fault-free, it is the most reasonable that parameter is arranged.
Reason 2:IGBT is damaged.
Countermeasure: check IGBT, changes the device damaged.
Reason 3:IGBT and unit drive the wiring error between plate or loosen.
Countermeasure: check wiring, it is ensured that wiring is correct, solid and reliable.
Reason 4: unit drives the input supply voltage on plate less than 12V.
Countermeasure: check the power supply output on test cell panel, do respective handling.
Two, unit communication fault (downlink communication fault)
(1), when testing goal can not be normally carried out communication between unit and master control, shutdown process is carried out.
(2) failure cause and countermeasure
Reason 1: unit power panel fault causes being less than 22V without output or output voltage.
Countermeasure: change unit power panel.
Reason 2: input fuse all damages to cause does not has electricity on unit bus
Countermeasure: change input fuse.
Reason 3: input rectifier bridge damages to cause does not has electricity on unit bus.
Countermeasure: change input rectifier bridge.
Reason 4: charging resistor is damaged to cause does not has electricity on unit bus, in system electrification Times unit communication fault.
Countermeasure: change charging resistor.
Reason 5: fiber-optic transfer fault.
Countermeasure: check optical fiber, it is ensured that connect correct reliable, do not stain, if damaging the optical fiber [1] that need to more renew.
Three, dc bus overvoltage
(1) testing goal prevents power cell direct current bus bar from pressing through height, causes component damage.
(2) failure cause and countermeasure
Reason 1: line voltage is too high, beyond over voltage alarm point.
Countermeasure: monitor electrical network, it is ensured that the scope range of the fluctuation of voltage of electrical network is less than reporting to the police.
Reason 2: in down speeding procedure, parameter arranges unreasonable.
Countermeasure: Reparametrization.
Reason 3: load-side is faulty.
Countermeasure: check load, confirms that load is normal.
Four, dc bus is under-voltage
(1) to prevent power cell direct current bus bar from pressing through low for testing goal, system cisco unity malfunction.
(2) failure cause and countermeasure
, there is fall temporarily, less than undervoltage warning point in reason 1: line voltage is too low.
Countermeasure: monitor electrical network, it is ensured that the scope range of the fluctuation of voltage of electrical network is not less than alarm point.
Five, unit input phase failure
(1) testing goal prevents power cell from working at non-full-phase state for a long time, causes the phase-shifting transformer of correspondence position
Level heating in winding and damage.
Two) failure cause and countermeasure
Reason 1: unit output overcurrent causes input current to exceed the normal operating value of fuse and fuse.
Countermeasure: check and be loaded with fault-free, parameter is arranged the most rationally [1].
Six, unit is overheated
(1) testing goal prevents the temperature of IGBT too high and damages.
(2) failure cause and countermeasure
Reason 1: the filter net jam of trouble unit correspondence position causes ventilation not smooth, and heat-sinking capability is inadequate, so that
The temperature of IGBT is gradually increasing until reporting overheating fault.
Countermeasure: change or clean filter screen.
Reason 2: the fan trouble on unit cabinet, affects the heat radiation of power cell, so that the temperature of IGBT gradually goes up
Rise until reporting overheating fault.
Countermeasure: maintenance and inspection blower fan.
Reason 3: the output signal line on temperature switch loosens with the connection terminal of unit panel, or is not plugged.
Described backstage diagnostic system display unit 44, for showing the status information of backstage diagnostic system 4 and and examining
Disconnected unit 43 diagnoses the fault message obtained.
Further, data center processing unit 42, be additionally operable to according to default data form to described data center at
The data that reason unit receives and sends carry out data conversion and storage, in order to meet the number of backstage diagnostic system wireless transmission unit
Require and the display requirement of backstage diagnostic system display unit according to the diagnosis of transmission requirement, backstage diagnosis unit.
Wherein, described failure system 1 is the fault power unit in chain structure high voltage converter, described fault power list
Unit includes three ac high voltage input terminals 11 and one for the first photoelectric conversion unit 12 received and sent messages.
When normally working, the power cell of described chain structure high voltage converter is connected with each other as shown in Figure 1, forms high electricity
Pressure output, meets the duty requirements of user.When there being power cell failure, chain structure high voltage converter quits work.
In order to remotely diagnose the power cell (referred to as fault power unit) broken down in described chain structure high voltage converter, need
Want described fault power unit can not mutually interconnect in chain structure high voltage converter, and use the single power cell side of powering on
Formula carries out remote fault diagnosis, and on power cell single with tradition, low tension diagnostic method difference is to utilize wireless network
Network remote fault diagnosis, and on traditional power cell, low tension test site needs big measuring appratus and special device could meet survey
Examination.
Three ac high voltage input terminals 11 of described fault power unit, are used for realizing three-phase alternating-current supply input,
It is connected with the power supply unit of collection in worksite system 2, the three phase mains of three-phase phase difference 120 degree is provided for described failure system,
Its line voltage source virtual value maximum is less than 720 volts.
Described first photoelectric conversion unit 12: for receiving the second photoelectric conversion unit 22 from collection in worksite system 2
The optical signal of output, and described optical signal is converted into the signal of telecommunication is sent to described failure system 1 (fault power unit) to drive
Dynamic described fault power unit runs；And the signal of telecommunication gathered from failure system 1 is converted into optical signal is sent to collection in worksite
Second photoelectric conversion unit 22 of system 2；
Further, this utility model additionally provides a kind of cascaded high-voltage frequency converter, including multiple power cells, described
Each power cell all includes: the power supply interface being connected with the input of power cell remote diagnosis system described above and data
Interface；Preferably, described data-interface is photoelectric conversion interface；Preferably, described power supply interface is that three ac high voltages are defeated
Enter terminal；Preferably, described photoelectric conversion interface is transmitting-receiving separately photoelectric conversion interface.
Further, as shown in Figure 4, for application this utility model power cell remote failure diagnosis system to high-pressure frequency-conversion
The power cell Cell_2 of device carries out the embodiment of fault diagnosis, and power cell Cell_2 includes the light with data transmit-receive function
Electricity converting unit, described remote failure diagnosis system includes:
Collection in worksite system 2, the fault power unit Cell_2 that its input is tested with needs has data transmit-receive merit
First photoelectric conversion unit of energy is connected, and the input of described collection in worksite system 2 is examined as described power cell remote failure
The input of disconnected system；
Data transmission system 3, with collection in worksite system 2 and backstage diagnostic system 43 wireless connections；
Backstage diagnostic system 4, its input is by wireless transmission interface and data transmission system 3 wireless connections.
Specifically, its operation principle is: the first photoelectric conversion unit of failure system 1 (being diagnosed fault power unit) with
Second photoelectric conversion unit of collection in worksite system 2 is connected, then by cable and the quilt of the power supply unit of collection in worksite system 2
Tracing trouble power cell is connected, and is powered to being diagnosed trouble unit by power supply unit, the information processing of collection in worksite system 2
Unit 23 calculates whether the output voltage of power supply unit reaches setting value automatically, and once the power supply unit of collection in worksite system 2 is defeated
Going out voltage and reach setting value, collection in worksite system 2 connects backstage diagnostic system 4 by data transmission system 3, it is ensured that collection in worksite
Between system 2 and backstage diagnostic system 4, data transmission is unimpeded.The information process unit 23 of collection in worksite system 2 detects scene
After acquisition system 2 is unimpeded with the transmission of backstage diagnostic system 4 data, send self-defining specific electrical signal to the second opto-electronic conversion list
Unit, the second photoelectric conversion unit converts electrical signals into optical signal, is transferred to be diagnosed fault power by optical transmission medium
First photoelectric conversion unit, the first photoelectric conversion unit being diagnosed fault power unit is converted to telecommunications receiving optical signal
Number drive respective element, be diagnosed fault power unit collect the fault power feedback states signal of telecommunication, by being diagnosed Trouble ticket
First photoelectric conversion unit transmitting photo-signal of unit is transferred to the second photoelectric conversion unit of collection in worksite system 2, collection in worksite
Second photoelectric conversion unit of system 2 is converted to the signal of telecommunication receiving optical signal, after being processed by information process unit 23, passes through
Collection in worksite system wireless transmission unit carries out conversion according to the rule of self-defining and is converted to radiofrequency signal by public data network
Being transferred to the wireless transmission unit of backstage diagnostic system 4, backstage diagnostic system wireless transmission unit receives data and is transferred to number
According to processing unit, data processing unit according to obtain after certain rule parsing test data and with backstage Mishap Database comparison,
Determine failure cause.After backstage diagnostic system 4 confirms, failure cause is simultaneously transferred to backstage after data processing unit processes
Diagnostic system display unit and through backstage diagnostic system wireless transmission unit, public data network, collection in worksite system without
Line transmission unit, collection in worksite system 2 information process unit 23 failure causes acquisition system 2 at the scene display unit in aobvious
Show.Testing crew can diagnose data whenever and wherever possible and send relevant device or personnel to, uses in equipment emergency first-aid repair works, can
The very first time by the state reporting of faulty equipment to leading body at a higher level or authoritative expert, quickly and effectively by Failure elimination.
Power cell remote failure diagnosis system disclosed in this utility model embodiment, field acquisition unit 2 only with need
The fault power unit Cell_2 of quilt to be connected, namely only need to gather the test number of a power cell Unit_2 needing test
According to, it is not necessary to transfer, after prior art gathers the test data of all power cells, the information wherein needed again so that whole
Individual power cell remote failure diagnosis system needs data volume to be processed to be greatly reduced, it is ensured that real-time.In addition diagnostic system
Collect status information to be processed by collection in worksite system 2, after wireless network transmissions, backstage diagnostic system 4 carry out specially
The locally displayed unit that test data are transferred to after family's storehouse contrast judgement collection in worksite system 2 judges for maintainer, fully
Utilize the powerful breakdown maintenance in rear resource.
Preferably, the input of backstage diagnostic system 4 is connected with the outfan of field acquisition unit 2 by wireless network.
The most described wireless network is public wireless data transmission network, or GPRS, 3G, 4G or 5G, or WIFI network.
Further, as shown in Figure 4, collection in worksite system 2 includes:
Second photoelectric conversion unit 22, it is as the input of collection in worksite system 2；
Power supply unit 21 with the collection in worksite system 2 that failure system 1 (i.e. fault power unit) is connected by cable；Defeated
Go out the end collection in worksite system wireless transmission unit 24 as collection in worksite system 2 outfan；As on-the-spot display system on the spot
Collection in worksite system 2 display unit 25 of display Man Machine Interface；As collection in worksite system 2 central processing unit and with light
It is mutual that electricity converting unit 22, collection in worksite system wireless transmission unit 24 and collection in worksite system 2 display unit 25 carry out information
Information process unit 23；
Specifically, its operation principle is: collection in worksite system 2 powers to fault power unit, collection in worksite system wireless
Transmission unit 24 receives the diagnosis sign on of backstage diagnostic system 4, and gives information process unit 23 diagnosis sign on,
Information process unit 23 performs data sending action according to the diagnosis sign on received, and the second photoelectric conversion unit 22 receives
After information process unit 23 data to be sent, send optical signal to tested event by the transmitting terminal of the second photoelectric conversion unit 22
First photoelectric conversion unit of barrier power cell.Tested trouble unit receive collection in worksite system 2 director data after perform
Corresponding operation, sends measured power unit current state light by the first photoelectric conversion unit of tested trouble unit simultaneously and believes
Number give collection in worksite system 2 the second photoelectric conversion unit 22, the second photoelectric conversion unit 22 carries out its telecommunications after opto-electronic conversion
Number delivering to information process unit 23, information process unit 23 processes and receives information and transmit collection in worksite system wireless transmission unit
24,24 information of collection in worksite system wireless transmission unit are converted to wireless signal and are sent to backstage by public wireless network
Diagnostic system 4.
Preferably, as shown in Figure 4, data transmission system 3 includes:
Mobile control tower composition public wireless network carries out data exchange；
Specifically, as shown in Figure 4, specifically, the operation principle of backstage diagnostic system 4 is:
Backstage diagnostic system wireless transmission unit 41 in backstage diagnostic system 4, is responsible for wireless signal and signal of telecommunication conversion,
When performing the diagnosis sign on that backstage diagnostic system 4 occurs to collection in worksite system 2, backstage diagnostic system wireless transmission unit
41 are responsible for converting electrical signals to wireless signal；Receiving the status information of the failure system that collection in worksite system 2 gathers, being responsible for will
Wireless signal is converted to the signal of telecommunication；The data center processing unit of backstage diagnostic system 4 is responsible for sending diagnosis initiation command to existing
Field acquisition system 2, and receive the test data that collection in worksite system 2 gathers；Backstage diagnosis unit 43 by described test data with
Mishap Database is compared, and checks the current malfunction of trouble unit.Described backstage diagnostic system display unit 44 director
Machine information is mutual, display diagnostic system state, collection in worksite system 2 state and backstage diagnosis unit state.
In this utility model embodiment, failure system 1 (field failure power cell) by self photoelectric conversion unit with
It is mutual that collection in worksite system 2 input photoelectric conversion unit realizes information, and collection in worksite system 2 and fault power unit pass through light
Fibre realizes high-low voltage isolation, it is ensured that fault detect safety.Collection in worksite system 2 utilizes public wireless by radio network interface
Network is connected with remote back-office diagnostic system 4, it is achieved remotely diagnostic detection fault, it is ensured that transducer power unit fault is the most accurate
Really detection, makes full use of factory repair resource and quickly positions fault, saves equipment repair time.
Preferably, communicate between collection in worksite system 2 with backstage diagnostic system 4 employing wireless communication module, this communication mould
Block can be selected depending on its practical situation in actual applied environment, is not specifically limited herein.
Another embodiment of this utility model additionally provides a kind of power cell, is applied to high voltage converter, including with above-mentioned
Photoelectric conversion interface that in embodiment, the input of arbitrary described power cell remote failure diagnosis system is connected and major loop
Power supply interface.
In order to realize the output of the multiple test data of described power cell in prior art, need a lot of resources of chip,
Whole frequency convertor system needs charging operation, and service condition is complicated, cost is the highest, and the described power cell in the present embodiment is adopted
By the independent power supply mode of diagnostic system, whole converter runs unrelated, reduces testing conditions and detection risk, simple to operate, from
The biggest saving has been obtained on cost.
Another embodiment of this utility model additionally provides a kind of high voltage converter, including multiple power cells, at least one
Described power cell includes that the input of described power cell remote failure diagnosis system arbitrary with above-described embodiment is connected
Photoelectric conversion interface and power supply interface.
Further, this utility model additionally provides a high voltage converter and power cell remote failure diagnosis system phase
The specific embodiment connected, the output of high voltage converter three-phase high-voltage alternating current is respectively U, V, W；Each many by same number
Individual power cell Unit_1 to Unit_N series connection obtains；The initial outfan of every first unit mutually links together, and is formed " Y "
Type neutral point O, other unit of the most each phase are sequentially connected in series again, and the end outfan of each last unit being in series is made
Outfan for high voltage converter complete machine；Unit output voltage and casing electromotive force relative to Y-shaped neutral point O at, from neutral point O
The most remote unit electromotive force is the highest.Common test instrunment equipment and electrical signal data line cannot accomplish safe insulation, high-voltage capacitance
Easily seal in low-voltage equipment by these approach, on-the-spot test personnel and equipment are damaged；In order to ensure on-the-spot test people
The safety of member and equipment have to accomplish high_voltage isolation.
Power cell in described high voltage converter includes arbitrary described power cell remotely event with above-described embodiment
Photoelectric conversion interface that the input of barrier diagnostic system is connected and power supply interface, coordinate arbitrary described power in above-described embodiment
Unit remote failure diagnosis system, by the conversion of the signal of telecommunication Yu optical signal, has evaded high pressure string electricity from Diagnosis System and has led to
Road, serves the effect of isolation high pressure.
Power cell diagnostic system disclosed in the present embodiment, it is possible to the once all power of high voltage converter shown in complete test
Unit, and it is not required to high voltage converter system electrification, control loop and power on.And described collection in worksite system and described tested fault
It is transmitted by described optical signal between power cell, it is ensured that the isolation of high low potential, it is ensured that the safety of test.With
Shi Suoshu collection in worksite system is only connected with the described power cell needing test, namely only need to gather the described merit needing to test
The test data of rate unit, it is not necessary to prior art gathers the test data of all power cells need complete machine powering by
Complete machine control system is concentrated to obtain and is transferred the information wherein needed again so that the letter of whole power cell remote failure diagnosis system
Single, safe and reliable and quick.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.Upper to the disclosed embodiments
State bright, make professional and technical personnel in the field be capable of or use this utility model.Multiple amendment to these embodiments is right
Will be apparent from for those skilled in the art, generic principles defined herein can be without departing from this reality
In the case of novel spirit or scope, realize in other embodiments.Therefore, this utility model is not intended to be limited to this
These embodiments shown in literary composition, and it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a high voltage transducer power unit, it is characterised in that include the first data-interface and the first power supply interface, described
One data-interface is for realizing data exchange with high voltage transducer power unit remote failure diagnosis system, and described first power supply connects
Mouth is for electrically connected with high voltage transducer power unit remote failure diagnosis system, by high voltage transducer power unit remotely event
Described high voltage transducer power unit is powered by barrier diagnostic system；Described high voltage transducer power unit remote fault diagnosis
System includes the second corresponding with described first data-interface and the first power supply interface respectively data-interface and the second power supply
Interface.
2. high voltage transducer power unit as claimed in claim 1, it is characterised in that described first power supply interface is three friendships
Stream high voltage input terminal.
3. high voltage transducer power unit as claimed in claim 1 or 2, it is characterised in that described first power supply interface is used for
Electrically connected with the second power supply interface of high voltage transducer power unit remote failure diagnosis system, for described high voltage converter merit
Rate unit provides the three phase mains that three-phase phase differs 120 degree.
4. high voltage transducer power unit as claimed in claim 3, it is characterised in that the voltage source of described three phase mains has
Valid value maximum is less than 720 volts.
5. high voltage transducer power unit as claimed in claim 1 or 2, it is characterised in that described first data-interface is light
Electricity translation interface.
6. high voltage transducer power unit as claimed in claim 5, it is characterised in that described photoelectric conversion interface is transmitting-receiving point
Open photoelectric conversion interface.
7. high voltage transducer power unit as claimed in claim 1 or 2, it is characterised in that described first data-interface passes through
Optical fiber is connected with the second data-interface of described high voltage transducer power unit remote failure diagnosis system.
8. high voltage transducer power unit as claimed in claim 7, it is characterised in that described optical fiber is plastic optical fiber.
9. high voltage transducer power unit as claimed in claim 1 or 2, it is characterised in that described second power supply interface is institute
Stating the three phase mains that high voltage transducer power unit provides three-phase phase to differ 120 degree, its line voltage source virtual value is the most very much not
More than 720 volts；Described second data-interface is photoelectric conversion interface.
10. a cascaded high-voltage frequency converter, it is characterised in that include one or more as described in any one of claim 1-9
High voltage transducer power unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620665621.6U CN205829450U (en) | 2016-06-29 | 2016-06-29 | A kind of high voltage transducer power unit and cascaded high-voltage frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620665621.6U CN205829450U (en) | 2016-06-29 | 2016-06-29 | A kind of high voltage transducer power unit and cascaded high-voltage frequency converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037359A (en) * | 2017-03-21 | 2017-08-11 | 上海新时达电气股份有限公司 | A kind of method of the use cascaded high-voltage frequency converter off-line identification parameter of electric machine |
| CN110209234A (en) * | 2019-06-14 | 2019-09-06 | 未来（北京）黑科技有限公司 | Voltage processing circuitry |
| CN112255485A (en) * | 2020-10-20 | 2021-01-22 | 云南电网有限责任公司电力科学研究院 | Low-voltage fault detection device for power module of frequency modulation test platform of new energy unit |
| CN112305350A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Fault detection device for power module of frequency modulation test platform of new energy unit |
-
2016
- 2016-06-29 CN CN201620665621.6U patent/CN205829450U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037359A (en) * | 2017-03-21 | 2017-08-11 | 上海新时达电气股份有限公司 | A kind of method of the use cascaded high-voltage frequency converter off-line identification parameter of electric machine |
| CN107037359B (en) * | 2017-03-21 | 2022-02-18 | 上海新时达电气股份有限公司 | Method for identifying motor parameters by using cascaded high-voltage frequency converter offline |
| CN110209234A (en) * | 2019-06-14 | 2019-09-06 | 未来（北京）黑科技有限公司 | Voltage processing circuitry |
| CN110209234B (en) * | 2019-06-14 | 2024-02-13 | 未来（北京）黑科技有限公司 | voltage processing circuit |
| CN112255485A (en) * | 2020-10-20 | 2021-01-22 | 云南电网有限责任公司电力科学研究院 | Low-voltage fault detection device for power module of frequency modulation test platform of new energy unit |
| CN112305350A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Fault detection device for power module of frequency modulation test platform of new energy unit |
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Granted publication date: 20161221 Termination date: 20210629 |