CN108614174A - The tester and test system of secondary resonance elimination device - Google Patents
The tester and test system of secondary resonance elimination device Download PDFInfo
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- CN108614174A CN108614174A CN201810599250.XA CN201810599250A CN108614174A CN 108614174 A CN108614174 A CN 108614174A CN 201810599250 A CN201810599250 A CN 201810599250A CN 108614174 A CN108614174 A CN 108614174A
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- elimination device
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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
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Abstract
The present invention provides a kind of tester of secondary resonance elimination device and test systems；Wherein, which includes：Module, overcurrent protection module, detection module and data processing module occur for harmonic wave；Harmonic wave occurs module, overcurrent protection module and detection module and is connect respectively with data processing module；Harmonic wave occurs module, overcurrent protection module and detection module and is connect respectively with secondary resonance elimination device to be tested；Harmonic signal of the module for generating setup parameter under the control of data processing module occurs for harmonic wave, and harmonic signal is sent to secondary resonance elimination device；Detection module receives the response signal generated after harmonic signal for detecting secondary resonance elimination device；Data processing module is for receiving response signal, and signal judges the working condition of secondary resonance elimination device according to response；Overcurrent protection module is used to that module to occur to harmonic wave to carry out overcurrent protection.The present invention can realize overcurrent protection in the test process of secondary resonance elimination device, improve the safety of test.
Description
Technical field
The present invention relates to technical field of power systems, the tester more particularly, to a kind of secondary resonance elimination device and test system
System.
Background technology
Currently, 35kV and power grid internal over pressure accident majority below are by voltage transformer (PT, Potential
Transformer ferromagnetic resonance) causes.In low-frequency resonant, general voltage is not high, and resonance current is big, easily PT is made to overheat
And it explodes；When power frequency and frequency multiplication resonance, electric current is smaller, but overtension, often makes apparatus insulated damage, causes serious accident.Two
Secondary harmonic elimination apparatus is the important composition equipment that PT eliminates resonance.The prior art generally uses relay-protection tester to secondary harmonic elimination
Device is tested, but usually snap action high current during the test, fragile relay-protection tester and secondary harmonic elimination
Device, safety are relatively low.
Invention content
In view of this, the purpose of the present invention is to provide a kind of tester of secondary resonance elimination device and test systems, with peace
Effectively the performance of secondary resonance elimination device is tested entirely.
In a first aspect, an embodiment of the present invention provides a kind of tester of secondary resonance elimination device, which includes：Harmonic wave
Module, overcurrent protection module, detection module and data processing module occurs；Module, overcurrent protection module and detection occur for harmonic wave
Module is connect with data processing module respectively；Harmonic wave occur module, overcurrent protection module and detection module respectively with it is to be tested
Secondary resonance elimination device connects；Harmonic wave letter of the module for generating setup parameter under the control of data processing module occurs for harmonic wave
Number, harmonic signal is sent to secondary resonance elimination device；Setup parameter includes one or more in frequency, voltage and current；Inspection
It surveys module and receives the response signal generated after harmonic signal for detecting secondary resonance elimination device；Data processing module is for receiving
Response signal, according to response signal judge the working condition of secondary resonance elimination device；Overcurrent protection module is used to that mould to occur to harmonic wave
Block carries out overcurrent protection.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein on
It includes overcurrent relay to state overcurrent protection module；Above-mentioned data processing module is additionally operable to judge whether response signal is more than setting threshold
Value；When response signal is more than given threshold, overcurrent protection instruction is sent out；Overcurrent protection module according to overcurrent protection for referring to
Show, starts overcurrent relay to carry out overcurrent protection.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein above-mentioned overcurrent protection module further includes over-current detector；Over-current detector is for acquiring response letter
Number, judge whether response signal is more than given threshold；When response signal is more than given threshold, start overcurrent relay to carry out
Overcurrent protection.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein on
It further includes display module to state tester；The display module is connect with data processing module；Display module is responded for real-time display
Signal and the working condition.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein on
It further includes human-computer interaction module to state tester；Setup parameter is sent to by the human-computer interaction module for receiving setup parameter
Data processing module.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiments of first aspect, wherein on
It includes sequentially connected CPLD, D/A converters, power amplification unit and first interface unit to state harmonic wave module occurs；CPLD with
Data processing module connects；First interface unit is connect with secondary resonance elimination device；CPLD is used for the control in data processing module
Under, digital harmonic signal is generated according to setup parameter；D/A converters are used to convert digital harmonic signal to simulation harmonic wave letter
Number；Power amplification unit is used to be amplified simulation harmonic signal, obtains harmonic signal；First interface unit is used for harmonic wave
Signal is sent to secondary resonance elimination device.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein on
It includes sequentially connected second interface unit, A/D converter, digital acquisition unit, digital processing unit to state detection module；Second connects
Mouth unit is connect with secondary resonance elimination device；Digital processing unit is connect with data processing module；Second interface unit is for receiving two
The analog response signal that secondary harmonic elimination apparatus generates；A/D converter is used to convert analog response signal to digital response signal；Number
Word sampling unit obtains final response signal for being sampled to digital response signal under the control of digital processing unit.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiments of first aspect, wherein on
It further includes one or more in man-machine interactive interface module, including USB interface, mouse and memory interface to state tester.
With reference to first aspect, an embodiment of the present invention provides the 8th kind of possible embodiments of first aspect, wherein on
It further includes power module to state tester, which is used to power for tester.
Second aspect, the embodiment of the present invention also provide a kind of test system of secondary resonance elimination device, which includes secondary
Harmonic elimination apparatus and above-mentioned tester.
The embodiment of the present invention brings following advantageous effect：
An embodiment of the present invention provides a kind of tester of secondary resonance elimination device and test systems；Module occurs by harmonic wave
The harmonic signal for generating setup parameter, secondary resonance elimination device is sent to by the harmonic signal；Secondary disappear is detected by detection module
Humorous device receives the response signal generated after harmonic signal；The response signal is received by data processing module, and according to this
Response signal judges the working condition of secondary resonance elimination device；Module is occurred to harmonic wave by overcurrent protection module and carries out overcurrent guarantor
Shield；Which can realize overcurrent protection in the test process of secondary resonance elimination device, improve the safety of test..
Other features and advantages of the present invention will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the present invention above-mentioned technology it can be learnt that.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the tester of secondary resonance elimination device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the tester of another secondary resonance elimination device provided in an embodiment of the present invention；
Fig. 3 is the working signal flow graph of the tester of another secondary resonance elimination device provided in an embodiment of the present invention；
Fig. 4 is in the tester of another secondary resonance elimination device provided in an embodiment of the present invention, host computer data processing and
Signal flow graph in human and machine interface unit work；
Fig. 5 is in the tester of another secondary resonance elimination device provided in an embodiment of the present invention, slave computer data processing and
Control unit exports signal flow graph when ac small signal；
Fig. 6 is main circuit busbar voltage module in the tester of another secondary resonance elimination device provided in an embodiment of the present invention
Schematic diagram；
Fig. 7 exports mould for frequency conversion voltage 150V in the tester of another secondary resonance elimination device provided in an embodiment of the present invention
The schematic diagram of block；
Fig. 8 exports mould for power-frequency voltage 220V in the tester of another secondary resonance elimination device provided in an embodiment of the present invention
The schematic diagram of block；
Fig. 9 is a kind of structural schematic diagram of the test system of secondary resonance elimination device provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Currently, the prior art generally tests secondary resonance elimination device using relay-protection tester, but testing
Usually snap action high current in journey, fragile relay-protection tester and secondary resonance elimination device, safety is relatively low, is based on this,
An embodiment of the present invention provides a kind of tester of secondary resonance elimination device and test systems, can apply and secondary resonance elimination device
The dependence test of test and electric system.
For ease of understanding the present embodiment, first to a kind of secondary resonance elimination device disclosed in the embodiment of the present invention
Tester describes in detail.
A kind of structural schematic diagram of the tester of secondary resonance elimination device shown in Figure 1, the tester include harmonic wave hair
Raw module 100, overcurrent protection module 110, detection module 120 and data processing module 130；Wherein, harmonic wave occur module 100,
Overcurrent protection module 110 and detection module 120 are connect with data processing module 130 respectively；Module 100 occurs for harmonic wave, overcurrent is protected
Shield module 110 and detection module difference 102 are connect with secondary resonance elimination device to be tested；
Harmonic wave letter of the module 100 for generating setup parameter under the control of data processing module 130 occurs for above-mentioned harmonic wave
Number, harmonic signal is sent to secondary resonance elimination device；The setup parameter includes one or more in frequency, voltage and current；
Above-mentioned detection module 120 receives the response signal generated after harmonic signal for detecting secondary resonance elimination device；At above-mentioned data
Reason module 130 is for receiving response signal, and signal judges the working condition of secondary resonance elimination device according to response；Above-mentioned overcurrent protection
Module 110 is used to that module to occur to harmonic wave to carry out overcurrent protection.
Secondary resonance elimination device is to carry out ring detection of escaping to voltage transformer open delta voltage (i.e. residual voltage), is effectively disappeared
Except the secondary device of the ferromagnetic resonance of the various frequencies of voltage transformer.The test of secondary resonance elimination device provided in an embodiment of the present invention
Instrument generates harmonic signal, carries out harmonic elimination using secondary resonance elimination device to be measured, and the property of the device is analyzed according to harmonic elimination result
Energy.
The major function that module occurs for above-mentioned harmonic wave is to generate the harmonic signal of setup parameter；The setup parameter can be frequency
Rate and voltage, or frequency and electric current；Above-mentioned data processing module can control harmonic wave according to the setup parameter and mould occurs
Block generates harmonic signal；It may include (Field-Programmable Gate Array, the scene FPGA that module, which occurs, for the harmonic wave
Programmable gate array) or CPLD (Complex Programmable Logic Device, Complex Programmable Logic Devices), with
Harmonic signal is generated under the control of data processing module；Since the signal of data processing module output is generally digital signal,
It can also include D/A converting circuit that module, which occurs, for harmonic wave；In addition, harmonic wave occur module can also include filter and amplification unit and
Interface unit etc..
The function of above-mentioned detection module is mainly by (i.e. above-mentioned by the processed harmonic signal of secondary resonance elimination device
Response signal) it is sampled, to be detected to each parameter of response signal；The parameter can be frequency and or voltage and
Or electric current；Above-mentioned sampled result is sent to data processing module to handle, obtains the performance parameter of the device.Detection module
May include sampler and digital processing unit, which is sampled under the control of digital processing unit；Due to above-mentioned response
Signal is usually analog signal, and detection module can also include analog-digital converter；In addition, the module further includes being filled with secondary harmonic elimination
Set the interface unit being connected.
Above-mentioned data processing module can be DSP (Digital Signal Processing, digital signal processor),
It may be microcontroller；It can be by being programmed in the sampling letter for setting the parameter of harmonic signal in the module and handling response signal
Number, it obtains the performance parameter of secondary resonance elimination device and judges whether to enable the functions such as overcurrent protection.
Above-mentioned overcurrent protection module can be individual overcurrent relay, receive the enabling overcurrent protection of data processing module
Instruction, disconnect circuit to realize circuit protection；The module can also include overcurrent relay and over-current detector, over-current detection
Device is for judging that whether electric current is more than given threshold in circuit, if it is enables overcurrent relay to realize current protection.
An embodiment of the present invention provides a kind of testers of secondary resonance elimination device；Module occurs by harmonic wave and generates setting ginseng
The harmonic signal is sent to secondary resonance elimination device by several harmonic signals；Secondary resonance elimination device is detected by detection module to receive
The response signal generated after to harmonic signal；The response signal is received by data processing module, and is sentenced according to the response signal
The working condition of disconnected secondary resonance elimination device；Module is occurred to harmonic wave by overcurrent protection module and carries out overcurrent protection；Which can
To realize overcurrent protection in the test process of secondary resonance elimination device, the safety of test is improved..
The embodiment of the present invention additionally provides the tester of another secondary resonance elimination device, tester survey shown in Fig. 1
It is realized on the basis of examination instrument, structural schematic diagram is as shown in Figure 2；The instrument includes that module 100, overcurrent protection module occur for harmonic wave
110, detection module 120, data processing module 130, display module 140, human-computer interaction module 150, man-machine interactive interface module
160 and power module.
Above-mentioned display module is connect with data processing module, is used for real-time display response signal and the working condition；It should
Display module can be liquid crystal display, and by carrying out the setting of display frequency in data processing module, which can be timely
Display is provided, judges whether the functions such as overcurrent, data real-time exchange.Above-mentioned human-computer interaction module is used to receive setup parameter, and
Setup parameter is sent to data processing module, which can be the human-computer interaction interface using software programmings such as labview；
Above-mentioned man-machine interactive interface module, including it is one or more in USB interface, mouse and memory interface, user passes through the module
Setup parameter is inputted in human-computer interaction module；Above-mentioned power module is used to power for tester.
In actual implementation, above-mentioned overcurrent protection module can be overcurrent relay；Above-mentioned data processing module is additionally operable to
Judge whether response signal is more than given threshold；When response signal is more than given threshold, overcurrent protection instruction is sent out；Overcurrent is protected
Shield module starts overcurrent relay to carry out overcurrent protection for being indicated according to overcurrent protection.In addition, above-mentioned overcurrent protection module
Can also include over-current detector and overcurrent relay；Whether over-current detector judges response signal for acquiring response signal
More than given threshold；When response signal is more than given threshold, starts overcurrent relay to carry out overcurrent protection, it is broken to reduce resonance
Bad when, impact of the high current to harmonic oscillator.
Module (also referred to as harmonic oscillator) occurs for above-mentioned harmonic wave by sequentially connected CPLD, D/A converters, power amplification
Unit and first interface unit are constituted；CPLD is connect with data processing module；First interface unit is connect with secondary resonance elimination device；
CPLD is used under the control of data processing module, and digital harmonic signal is generated according to setup parameter；D/A converters will be for that will count
Word harmonic signal is converted into simulation harmonic signal；Power amplification unit is used to be amplified simulation harmonic signal, obtains harmonic wave
Signal；First interface unit is used to harmonic signal being sent to secondary resonance elimination device.
Above-mentioned detection module is by sequentially connected second interface unit, A/D converter, digital acquisition unit, digital processing
Device is constituted；Second interface unit is connect with secondary resonance elimination device；Digital processing unit is connect with data processing module；Second interface list
Analog response signal of the member for receiving secondary resonance elimination device generation；A/D converter is used to convert analog response signal to number
Word response signal；Digital acquisition unit obtains most for being sampled to digital response signal under the control of digital processing unit
Whole response signal.
Above-mentioned tester can authentic accurate simulation 35kV and its following power grid occur PT resonance, ground connection, overvoltage, and
It is capable of the functions such as harmonic elimination, ground connection, the overvoltage of fast automatic inspection secondary resonance elimination device, realizes secondary resonance elimination device performance
Safely and fast detect.
The embodiment of the present invention additionally provides the tester of another secondary resonance elimination device, tester survey shown in Fig. 2
It tries to realize on the basis of instrument.The tester includes control power module, and host computer data processing and human and machine interface unit are (quite
In above-mentioned human-computer interaction module), slave computer data processing and control unit (being equivalent to above-mentioned data processing module), power amplifier module
(be equivalent to harmonic wave and module occurs) and voltage output interface unit (are equivalent to and incorporate first interface unit and second interface list
Member) it collectively constitutes.
Signal flow graph when the work of the tester as shown in figure 3, control power module be host computer data processing and
Human and machine interface unit and slave computer data processing and control unit provide power supply；Host computer data processing and human and machine interface unit are
Whole device provides the functions such as man-machine interface, the output of record report data；Slave computer data processing and control unit receive " upper
The dependent instruction of machine data processing and human and machine interface unit " exports small signal signal and control instruction to power amplifier module；Work(
Amplification module and voltage output interface unit receive the dependent instruction of slave computer data processing and control unit, output measured power electricity
Pressure, has a self-protection function (herein by overcurrent protection module synthesis in power amplifier module), and to slave computer data processing and
Control unit feedback protection signal.
In addition, the instrument further includes alarm signal detection module；The module is disappeared by voltage output interface unit with secondary
The connection of humorous device, the relay node for detecting the output of secondary resonance elimination device alarm signal, and to slave computer data processing and
Control unit feeder alert signal.
Specifically, host computer data processing and human and machine interface unit are connect by host computer processor unit, data storage, USB
Modules composition, the signal flow graphs in work such as mouth, display screen, rotation mouse are as shown in Figure 4；Wherein, host computer processor
Unit is the core microcomputer control centre of " host computer data processing and human and machine interface unit ", and connection USB interface is for testing number
According to copy；Connect the real-time storage that data storage is used for test data；Connect display screen for real-time display voltage condition,
Frequency size, test result；Connection rotation mouse is to testing man-machine software interface into edlin, equipment control etc..
Specifically, slave computer data processing and control unit by dsp processor unit, CPLD, D/A D/A converting circuit,
The compositions such as small signal amplification circuit, power circuit.The module exports the signal flow graph of ac small signal as shown in figure 5, by DSP
Signal processor calculates the voltage value of each point on required output AC voltage a cycle waveform, and joint CPLD controls D/A
Converter becomes data volume the ac small signal of one cycle, and the power amplification list of rear class is supplied to after amplifying using signal
Member uses.
Above-mentioned ac small signal is input to secondary resonance elimination device after power amplifier module and voltage output interface unit handles
In；Above-mentioned power amplifier module and voltage output interface unit are by main circuit busbar voltage module, frequency conversion voltage 150V output modules, work
The compositions such as frequency voltage 220V output modules, output switching and interface module.
Specifically, main circuit busbar voltage module principle figure as shown in fig. 6, power input exchange (AC,
Alternating Current) 220V voltages are divided into two-way by the main pressure transformer of multiple-channel output of 200W, wherein passing through all the way
Rectification and capacitor filtering generate the busbar voltage of direct current+350V and -350V, and another way is generated through over commutation and capacitor filtering
The busbar voltage of direct current+220V and -220V.
The transient current of frequency conversion voltage 150V output modules is 7A, and schematic diagram is as shown in fig. 7, specific works engineering is：
Ac small signal is divided into two-way after two-stage amplifying circuit, enters power tube after amplifying drive amplification by positive half-wave all the way,
The biasing of direct current+220V positive voltage busbares is added；Another way enters power tube after amplifying drive amplification by negative half-wave, is added straight
Stream -220V negative voltage busbars bias；Two-way voltage synthesizes alternating voltage, is exported into secondary resonance elimination device as harmonic signal；
The alternating voltage is fed back in second amplifying circuit simultaneously, to carry out Voltage Feedback control.Half-wave amplification is being carried out to voltage
During drive amplification and busbar voltage bias, setting protection circuit, to carry out overcurrent protection.Power-frequency voltage 220V exports mould
Block is similar with the above-mentioned design principle of frequency conversion voltage 150V output modules, and schematic diagram is as shown in Figure 8.
The tester can the failures such as simulating grid resonance, ground connection, overvoltage, and can quickly examine bis- harmonic eliminations dresses of PT
The functions such as the harmonic elimination set and ground connection, overvoltage alarm, ensure the reliable and stable operation of PT secondary resonance elimination devices.Effective solution passes
System method the problems such as there are fragile tester, security risk, tests difficult.
Corresponding to above-described embodiment, the embodiment of the present invention also provides a kind of test system of secondary resonance elimination device, structure
Schematic diagram is as shown in figure 9, the system includes secondary resonance elimination device 90 and above-mentioned tester 91.
The test system of secondary resonance elimination device provided in an embodiment of the present invention is filled with the secondary harmonic elimination that above-described embodiment provides
The tester technical characteristic having the same set reaches identical technique effect so can also solve identical technical problem.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of tester of secondary resonance elimination device, which is characterized in that the tester includes：Module occurs for harmonic wave, overcurrent is protected
Protect module, detection module and data processing module；
The harmonic wave occurs module, the overcurrent protection module and the detection module and connects respectively with the data processing module
It connects；The harmonic wave occur module, the overcurrent protection module and the detection module respectively with secondary resonance elimination device to be tested
Connection；
Harmonic signal of the module for generating setup parameter under the control of the data processing module occurs for the harmonic wave, by institute
It states harmonic signal and is sent to the secondary resonance elimination device；The setup parameter includes one kind or more in frequency, voltage and current
Kind；
The detection module receives the response signal generated after the harmonic signal for detecting the secondary resonance elimination device；
The data processing module judges the secondary resonance elimination device for receiving the response signal according to the response signal
Working condition；
The overcurrent protection module is used to that module to occur to the harmonic wave to carry out overcurrent protection.
2. tester according to claim 1, which is characterized in that the overcurrent protection module includes overcurrent relay；Institute
Data processing module is stated to be additionally operable to judge whether the response signal is more than given threshold；When the response signal is more than described sets
When determining threshold value, overcurrent protection instruction is sent out；
The overcurrent protection module is used to, according to overcurrent protection instruction, start the overcurrent relay to carry out overcurrent guarantor
Shield.
3. tester according to claim 2, which is characterized in that the overcurrent protection module further includes over-current detector；
The over-current detector judges whether the response signal is more than given threshold for acquiring the response signal；When the sound
When induction signal is more than the given threshold, start the overcurrent relay to carry out overcurrent protection.
4. tester according to claim 1, which is characterized in that the tester further includes display module；The display
Module is connect with the data processing module；The display module is for response signal and the work shape described in real-time display
State.
5. tester according to claim 1, which is characterized in that the tester further includes human-computer interaction module；It is described
The setup parameter is sent to the data processing module by human-computer interaction module for receiving the setup parameter.
6. tester according to claim 1, which is characterized in that it includes sequentially connected that module, which occurs, for the harmonic wave
CPLD, D/A converter, power amplification unit and first interface unit；The CPLD is connect with the data processing module；It is described
First interface unit is connect with the secondary resonance elimination device；
The CPLD is used under the control of the data processing module, and digital harmonic signal is generated according to the setup parameter；
The D/A converters are used to convert the digital harmonic signal to simulation harmonic signal；The power amplification unit for pair
The simulation harmonic signal is amplified, and obtains the harmonic signal；The first interface unit is used for the harmonic signal
It is sent to the secondary resonance elimination device.
7. tester according to claim 1, which is characterized in that the detection module includes sequentially connected second interface
Unit, A/D converter, digital acquisition unit, digital processing unit；The second interface unit connects with the secondary resonance elimination device
It connects；The digital processing unit is connect with the data processing module；
The second interface unit is used to receive the analog response signal that the secondary resonance elimination device generates；The A/D converter
For converting the analog response signal to digital response signal；The digital acquisition unit is used in the digital processing unit
Control under the digital response signal is sampled, obtain final response signal.
8. tester according to claim 1, which is characterized in that the tester further includes man-machine interactive interface module,
Including one or more in USB interface, mouse and memory interface.
9. tester according to claim 1, which is characterized in that the tester further includes power module, the power supply
Module is used to power for the tester.
10. a kind of test system of secondary resonance elimination device, which is characterized in that the system comprises secondary resonance elimination devices and right to want
Seek 1-9 any one of them testers.
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| CN201810599250.XA CN108614174A (en) | 2018-06-11 | 2018-06-11 | The tester and test system of secondary resonance elimination device |
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