CN105277860B - A kind of multi-functional live local discharge test system - Google Patents
A kind of multi-functional live local discharge test system Download PDFInfo
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- CN105277860B CN105277860B CN201510779601.1A CN201510779601A CN105277860B CN 105277860 B CN105277860 B CN 105277860B CN 201510779601 A CN201510779601 A CN 201510779601A CN 105277860 B CN105277860 B CN 105277860B
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Abstract
A kind of multi-functional live local discharge test system, including voltage regulator controllers, variable-frequency power sources, exciting transformer, reactor, product to be tested, detect impedance, impulse generator and electric pulse PD meter, the detection impedance includes low noise amplifying circuit, tunable capacitor module, adjustable resistance module, controllable impedance module, signal input part, signal output end and ground terminal, power supply module, wherein, tunable capacitor module, adjustable resistance module, controllable impedance module is in parallel into RLC module, one end of low noise amplifying circuit and signal input part, power supply module connects, the other end of low noise amplifying circuit and one end of RLC module connect, the other end of RLC module is connect with ground terminal, signal output end is in parallel with RLC module.
Description
Technical field
The invention mainly relates to the changes of current to become live local discharge test system, relates generally to a kind of multi-functional live local discharge test
System.
Background technology
Shelf depreciation refers to a kind of breakdown electrical discharge of Electric Power Equipment Insulation components of system as directed.It is due to apparatus insulated
Inside occurs to repeat to puncture under high-voltage strength effect and that extinguishes shows there are defect caused by light current or production process
As.Since shelf depreciation will produce charge-exchange, high-frequency current pulse is generated, by corresponding measure loop, is hindered using detection
The anti-electric pulse PD meter that converts a signal into carries out analyzing processing, to have the function that detect partial discharge.
At the scene in local discharge test system, detection impedance is typically a passive four-pole network element, at present both at home and abroad
Detection impedance there are many kinds of type, by it is internal be detection impedance that resistance R and inductance L forms single element；There is resistance electric
Hold the detection impedance of in parallel or resistance-inductance parallel connection RC and RL circuits；Live electric pulse local discharge test, according to different test products,
It is then the detection impedance for needing to select different model.
At current conversion station scene during local discharge test, in addition to partial discharge equipment under test is in stoppage in transit state, other power equipments
All in operation, leading to live partial discharge detection, there are the interference signal that the interference of many low-and high-frequencies, ground connection seal in, the also changes of current
Valve operation interference, the interference waveform of 12 pulsation is sealed in by earth mat, this waveform noise spot and cut-offfing for converter valve each period are secondary
Number is identical, and feature is clearly.The presence of these interference signals so that the interference fed back on live partial discharge instrument is especially bright
It is aobvious, it can not normally carry out local discharge test work.And due to the limitation of live local discharge test system equipment, entire test loop
Capacity and induction reactance uncertainty, detecting the selection of impedance, there are also problems, and corresponding test loop can not be selected most suitable
Detection impedance, the sensitivity of partial discharge detection will be reduced, influence is caused on the reliability of partial discharge detection data below, is caused
Error.The capacity of different power equipments is also different, and the tuning capacity of the detection impedance needed for local discharge test is also different, different shaped
Number detection impedance be easy to obscure, increase the workload of field test personnel.
Invention content
The present invention provides a kind of multi-functional live local discharge test system, the detection impedance in the system can adapt to not
With the partial discharge detection under test loop, and good in anti-interference performance.
The technical solution adopted by the present invention is：
A kind of multi-functional live local discharge test system, including voltage regulator controllers, variable-frequency power sources, exciting transformer, reactance
Device, product to be tested, detection impedance, impulse generator and electric pulse PD meter, the input terminal of the voltage regulator controllers connect power frequency electric
Pressure, the input terminal of the output end connection variable-frequency power sources of the voltage regulator controllers, the output end connection exciting transformer of variable-frequency power sources
The output end of input terminal, exciting transformer is in parallel with reactor, and reactor, product to be tested, detection impedance are connected into measure loop,
One end for connect with reactor of detection impedance is grounded, and impulse generator is connected in parallel on the both ends of product to be tested, electric pulse PD meter and
Impedance connection is detected, detection impedance includes low noise amplifying circuit, tunable capacitor module, adjustable resistance module, controllable impedance mould
Block, signal input part, signal output end and ground terminal, power supply module, wherein tunable capacitor module, adjustable resistance module, adjustable
Inductor module is in parallel into RLC module, and one end of low noise amplifying circuit is connect with signal input part, power supply module, low noise
One end of the other end of amplifying circuit and RLC module connects, and the other end of RLC module is connect with ground terminal, signal output end and
RLC module is in parallel.
It can be seen from the above, the active detection impedance includes by tunable capacitor module, adjustable resistance module, controllable impedance mould
Block and the RLC module being unified into, thus when in applied to local discharge test system, it can be by adjusting tunable capacitor module, adjustable electric
Module, controllable impedance module are hindered to obtain most suitable detection impedance, can adapt to the partial discharge detection under different tests circuit, then
Person is equipped with low noise amplifying circuit between signal input part and RLC module, and power supply module is powered for low noise amplifying circuit,
For active detection impedance, directly inhibit noise interferences from signal input part, can effectively reduce the interference of situ part low-and high-frequency,
And more sensitively detect discharge pulse signal.
Detect impedance further include impedance control module, the impedance control module respectively with power supply module, tunable capacitor module,
Adjustable resistance module, the connection of controllable impedance module.By the impedance control module respectively to tunable capacitor module, adjustable resistance mould
Block, controllable impedance module are controlled to adjust, and structure is simple and easy to implement, and testing crew is facilitated to use.
Impulse generator includes pulse output module, battery module, Battery control module, centralized control module, battery electricity
Measure detection module, LED drive control modules and LED charactrons display module, wherein the input terminal and battery of Battery control module
Module connects, and the output end of Battery control module and the first input interface of centralized control module connect, pulse output module
Input terminal and the first output interface of centralized control module connect, and input terminal and the battery module of battery capacity detection module connect
It connecing, the second input interface of the output end of battery capacity detection module and centralized control module connects, and the of centralized control module
Two output interfaces are connect with the input terminal of LED drive control modules, and the output end and LED charactrons of LED drive control modules are aobvious
Show the input terminal connection of module.Battery module is connect by energy supply control module with centralized control module, controls impulse generator
Switch；Centralized control module controls pulse output module output pulse signal；The input terminal and battery of battery capacity detection module
Module connects, and can acquire the signal parameter of battery module, obtain the remaining capacity data of battery module, battery capacity detection module
Output end and centralized control module input terminal connect, the battery module remaining capacity data of acquisition are transferred to centralized control
Module；Second output interface of centralized control module is connect with the input terminal of LED drive control modules, can be by the battery mould of acquisition
Block remaining capacity data are transferred to LED drive control modules, and LED drive control modules are connect with LED charactrons display module, with
Battery module remaining capacity data are shown and are exported by drive control LED charactrons display module.It is finally accomplished that, in the present invention
Impulse generator except have generate pulse signal basic function in addition to, can also by the information about power of battery in impulse generator with
The mode of LED charactrons is reflected to user, so that it may with the information about power to present battery there are one more intuitive understanding, when into
When row local discharge test, allow field test personnel being capable of real time inspection understanding battery level information, completely the electricity consumption shape of grasp battery
State, pulsing generator not enough power supply, avoids emergency case and the experiment interruption of field test, improves live examination in advance
Test working efficiency.
Pulse output module includes the step pulse generator with different voltages gear, with the more of different capacitance gears
Gear capacitance module, pulse quantity of electric charge driving switch, pulse output end, wherein each voltage on the step pulse generator
Gear leads to each on pulse quantity of electric charge driving switch after being connect respectively at least one capacitance gear of the multi gear position capacitance module
The output end of the input terminal of a pulse quantity of electric charge gear, pulse quantity of electric charge driving switch is connect with pulse output end.Step pulse
The exportable repeatable quantity of electric charge after generator and the series connection of multi gear position capacitance module, it can be seen from the above, in this impulse generator, rank
There is the impulse generator that jumps multiple and different voltage gears, multi gear position capacitance module to have multiple and different capacitance gears, and rank
Each voltage gear on jump impulse generator is connect at least one capacitance gear of the multi gear position capacitance module respectively, can group
It closes and exports multiple and different pulse quantities of electric charge, the different pulse quantities of electric charge for combining output lead on pulse quantity of electric charge driving switch not
With the input terminal of pulse quantity of electric charge gear, and the output end of pulse quantity of electric charge driving switch is connect with pulse output end, thus can
The required pulse quantity of electric charge is selected by operating impulse quantity of electric charge driving switch, and the required pulse quantity of electric charge is made to pass through pulse output end
Output.Thus the impulse generator of the present invention can multifunctional use in field-checking, disclosure satisfy that the partial discharge examination of distinct device
It tests, and effectively ensures the smooth development of work on the spot, and the impulse generator of the present invention is only needed through the operating impulse quantity of electric charge
Driving switch is that required pulse quantity of electric charge output may be selected, and reduces the wiring work of field test, avoids existing pulse
Generator is transferred the files the maloperation being susceptible in the process, and gear shifting operation is simple, facilitates the use of testing crew.
Pulse output module further includes the pulse frequency adjustment module and arteries and veins for having different pulse generation rate-adaptive pacemaker gears
Rush occurrence frequency selection driving switch, the pulse generation frequency select driving switch on each selection gear respectively with the pulse
Each pulse generation rate-adaptive pacemaker gear in frequency regulation block is correspondingly connected with.Pulse frequency adjustment module makes pulse generation
The frequency of device is adjustable, driving switch can be selected to change pulse generation frequency by manipulating pulse generation frequency, according to local discharge test
Live disturbed condition, the corresponding pulse generation frequency of unrestricted choice, to realize that the calibration for being efficiently completed live local discharge test walks
Suddenly.
What the present invention was brought has the beneficial effect that：
1, the active detection impedance is when in applied to local discharge test system, can be by adjusting tunable capacitor module, adjustable
Resistive module, controllable impedance module can adapt to the partial discharge detection under different tests circuit to obtain most suitable detection impedance,
And directly can inhibit noise interferences from signal input part, the interference of situ part low-and high-frequency can be effectively reduced, and sensitiveer
Detection discharge pulse signal.
2, the impulse generator, can also be by battery in impulse generator in addition to having the basic function for generating pulse signal
Information about power is reflected to user in a manner of LED charactrons, so that it may which with the information about power to present battery, there are one more intuitive
Understanding, when carrying out local discharge test, allow field test personnel can real time inspection understand battery level information, completely grasp electricity
Electricity condition is used in pond, in advance pulsing generator not enough power supply, and the emergency case and experiment for avoiding field test are interrupted, and are carried
High field test working efficiency；
3, the different pulse quantities of electric charge can be provided, the local discharge test of plurality of devices test product can be met, and gear shifting operation is simple,
Facilitate the use of testing crew；
4, facilitate and corresponding pulse generation frequency is selected according to local discharge test scene disturbed condition, reduce test data and miss
Difference.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram that impedance is detected in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of impulse generator in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the pulse output module of the impulse generator of the embodiment of the present invention；
Reference numeral：
1, voltage regulator controllers；2, variable-frequency power sources；3, exciting transformer；4, reactor；5, product to be tested；6, impedance is detected；
7, impulse generator；8, electric pulse PD meter；9, power supply module；10, signal input part；11, low noise amplifying circuit；12, it connects
Ground terminal；13, tunable capacitor module；14, adjustable resistance module；15, controllable impedance module；16, signal output end；17, impedance control
Molding block；18, battery module；19, Battery control module；20, centralized control module；21, pulse output module；22, battery electricity
Measure detection module；23, LED drive control modules；24, LED charactrons display module；25, step pulse generator；26, multi gear
Position capacitance module；27, pulse quantity of electric charge driving switch；28, pulse frequency adjusts module；29, pulse generation frequency selects gear
Switch.
Specific implementation mode
As shown in Figs. 1-2, a kind of multi-functional live local discharge test system, including voltage regulator controllers 1, variable-frequency power sources 2, encourage
Magnetic transformer 3, reactor 4, product to be tested 5, detection impedance 6, impulse generator 7 and electric pulse PD meter 8, the voltage regulator controllers
1 input terminal connects power-frequency voltage, and the output end of the voltage regulator controllers 1 connects the input terminal of variable-frequency power sources 2, variable-frequency power sources 2
Output end connects the input terminal of exciting transformer 3, and the output end of exciting transformer 3 is in parallel with reactor 4, and reactor 4 is tested
Product 5, detection impedance 6 are connected into measure loop, one end ground connection that detection impedance 6 is connect with reactor 4,7 parallel connection of impulse generator
At the both ends of product to be tested 5, electric pulse PD meter 8 with detection impedance 6 connect, detection impedance 6 including low noise amplifying circuit 11,
Tunable capacitor module 13, adjustable resistance module 14, controllable impedance module 15, signal input part 10, signal output end 16 and ground connection
End 12, power supply module 9, wherein tunable capacitor module 13, adjustable resistance module 14, controllable impedance module 15 are in parallel into RLC moulds
One end of block, low noise amplifying circuit 11 is connect with signal input part 10, power supply module 9, low noise amplifying circuit 11 it is another
End is connect with one end of RLC module, and the other end of RLC module is connect with ground terminal 12, and signal output end 16 and RLC module are simultaneously
Connection.
It can be seen from the above, the active detection impedance 6 includes by tunable capacitor module 13, adjustable resistance module 14, adjustable
Inductor module 15 and the RLC module being unified into, thus when in applied to local discharge test system, it can be by adjusting tunable capacitor module
13, adjustable resistance module 14, controllable impedance module 15 can adapt to different tests circuit to obtain most suitable detection impedance 6
Under partial discharge detection, furthermore, low noise amplifying circuit 11 is equipped between signal input part 10 and RLC module, power supply module 9 is
Low noise amplifying circuit 11 is powered, and is active detection impedance 6, is directly inhibited noise interferences from signal input part 10, can have
Effect reduces the interference of situ part low-and high-frequency, and more sensitively detects discharge pulse signal.
The adjustable active detection impedance of the gear 6 further includes impedance control module 17, the impedance control module 17 respectively with
Tunable capacitor module 13, adjustable resistance module 14, controllable impedance module 15 connect.It respectively pair can by the impedance control module 17
Capacitance module 13, adjustable resistance module 14, controllable impedance module 15 is adjusted to be controlled to adjust, structure is simple and easy to implement, and conveniently
Testing crew uses.The impedance control module 17 can be one-chip computer module, can be realized to adjustable electric in conjunction with existing control program
The control and regulation of molar block 13, adjustable resistance module 14, controllable impedance module 15, application are simple and convenient.
The power supply module 9 is connect with impedance control module 17.Power supply module 9 is low noise amplifying circuit 11, impedance simultaneously
Control module 17 is powered, and resource, more integrated, portability are made full use of.
As shown in figure 3, the impulse generator 7 in this system includes pulse output module 21, battery module 18 and battery control
The input terminal of molding block 19, Battery control module 19 is connect with battery module 18, further includes centralized control module 20, battery capacity
Detection module 22, LED drive control modules 23 and LED charactrons display module 24, wherein the output end of Battery control module 19
It is connect with the first input interface of centralized control module 20, the of the input terminal of pulse output module 21 and centralized control module 20
One output interface connects, and the input terminal of battery capacity detection module 22 is connect with battery module 18, battery capacity detection module 22
Output end connect with the second input interface of centralized control module 20, the second output interface and LED of centralized control module 20
The input terminal of drive control module 23 connects, and the output ends of LED drive control modules 23 is defeated with LED charactrons display module 24
Enter end connection.
It can be seen from the above, battery module 18 is connect by energy supply control module with centralized control module 20, pulse generation is controlled
The switch of device 7；Centralized control module 20 controls 21 output pulse signal of pulse output module；Battery capacity detection module 22 it is defeated
Enter end to connect with battery module 18, the signal parameter of battery module 18 can be acquired, obtains the remaining capacity data of battery module 18,
The output end of battery capacity detection module 22 is connect with the input terminal of centralized control module 20, and the battery module 18 of acquisition is remaining
Electricity data is transferred to centralized control module 20；Second output interface of centralized control module 20 and LED drive control modules 23
Input terminal connection, the 18 remaining capacity data of battery module of acquisition can be transferred to LED drive control modules 23, LED drivings
Control module 23 is connect with LED charactrons display module 24, with drive control LED charactrons display module 24 by battery module 18
The display output of remaining capacity data.It is finally accomplished that, the impulse generator 7 in the present invention removes the base for having and generating pulse signal
Outside this function, also the information about power of battery in impulse generator 7 can be reflected to user in a manner of LED charactrons, so that it may with
Allow field test personnel can when carrying out local discharge test there are one more intuitive understanding the information about power of present battery
Real time inspection understands battery level information, and the palm completely uses electricity condition according to battery, in advance 7 not enough power supply of pulsing generator,
The emergency case and experiment for avoiding field test are interrupted, and field test working efficiency is improved.
The battery capacity detection module 22 is BQ2040.The built-in temperature sensor of BQ2040 chip interiors, in because
The presence for having temperature sensor has the function of overheating protection, in the operating condition to, impulse generator 7, not only battery capacity
It can effectively monitor, the security performance that battery uses also is guaranteed.For the electricity inside impulse generator 7
Pond, by the signal parameter of 7 internal cell of BQ2040 chip acquisition pulses generator of profession, then according in BQ2040 chips
The existing algorithm routine write in portion calculates the electricity of internal cell.Here professional battery capacity detection chip
The testing principle of BQ2040 is：The inside of chip built-in temperature sensor and counter, since battery is in use
Continuous discharge state is counted at last so detecting the degree of discharge of battery by the temperature sensor and counter of chip interior
The battery dump energy data transmission of calculating comes out.
The centralized control module 20 is W78E microcontrollers.W78E microcontrollers can be realized in conjunction with existing control program to each defeated
Enter the control of output module, simple in structure, compact, easy realization.
The LED drive control modules 23 are TM1629.TM1629 chips support the points of driving more, are internally integrated
Serial line interface, RC oscillators, keyboard scan storage unit, command decoder, display-memory, brightness controller, disconnected latch,
The parts such as segment driver are exclusively used in the output of drive control LED digital-scroll techniques.Under the control of TM1629 chips, the LED that is controlled
Digital tube display module 24 comes out the battery dump energy that system detectio goes out with numeral method, can by two charactrons
To show the percentage of remaining capacity.
As shown in figure 4, pulse output module 21 includes the step pulse generator 25 with different voltages gear, has not
With the multi gear position capacitance module 26, pulse quantity of electric charge driving switch 27, pulse output end of capacitance gear, wherein the step pulse
Each voltage gear on generator 25 leads to after being connect respectively at least one capacitance gear of the multi gear position capacitance module 26
The input terminal of each pulse quantity of electric charge gear on pulse quantity of electric charge driving switch 27, the output end of pulse quantity of electric charge driving switch 27
It is connect with pulse output end.Exportable repeatable charge after step pulse generator 25 and multi gear position capacitance module 26 are connected
Amount, it can be seen from the above, in this impulse generator 7, step pulse generator 25 has multiple and different voltage gears, multi gear position electricity
Molar block 26 have multiple and different capacitance gears, and each voltage gear on step pulse generator 25 respectively with the multi gear
At least one capacitance gear connection of position capacitance module 26, can combine and export multiple and different pulse quantities of electric charge, combine output
The different pulse quantities of electric charge lead on pulse quantity of electric charge driving switch 27 input terminal of different pulse quantity of electric charge gears, and pulse charge
The output end of amount driving switch 27 is connect with pulse output end, thus can be selected by operating impulse quantity of electric charge driving switch 27
The required pulse quantity of electric charge makes the required pulse quantity of electric charge be exported by pulse output end.Thus the impulse generator 7 of the present invention can
Multifunctional use disclosure satisfy that the local discharge test of distinct device in field-checking, and effectively ensure smoothly opening for work on the spot
Exhibition, and the impulse generator 7 of the present invention only needs that required pulse electricity may be selected by operating impulse quantity of electric charge driving switch 27
Lotus amount exports, and reduces the wiring work of field test, avoids existing impulse generator 7 and transfer the files the mistake being susceptible in the process
Operation, gear shifting operation is simple, facilitates the use of testing crew.
Pulse output module 21 further includes the pulse frequency adjustment module 28 for having different pulse generation rate-adaptive pacemaker gears
Driving switch 29, the pulse generation frequency is selected to select each selection gear difference on driving switch 29 with pulse generation frequency
It is correspondingly connected with each pulse generation rate-adaptive pacemaker gear in pulse frequency adjustment module 28.Pulse frequency adjusts module 28
So that the frequency of impulse generator 7 is adjustable, driving switch 29 can be selected to change pulse generation frequency by manipulating pulse generation frequency
Rate, according to local discharge test scene disturbed condition, the corresponding pulse generation frequency of unrestricted choice is efficiently completed live office to realize
Put the calibration steps of experiment.
In the present embodiment, each pulse quantity of electric charge gear on the pulse quantity of electric charge driving switch 27 is respectively 5pC grades,
10pC grades, 20pC grades, 50pC grades, 100pC grades, 200pC grades, 500pC grades, 1000pC grades, 2000pC grades, 5000pC grades, the rank
Each voltage gear of jump impulse generator 25 is respectively 0.5V grades, 1V grades, 2V grades, 5V grades, the multi gear position capacitance module 26
Each capacitance gear is respectively 10pf grades, 100pf grades, 1000pf grades, wherein 0.5V grades connect with 10pf grades after lead to 5pC grades,
1V grades connect respectively with 10pf grades, 100pf grades, 1000pf grades after respectively lead to 10pC grades, 100pC grades, 1000pC grades, 2V grades points
Respectively lead to 20pC grades, 200pC grades, 2000pC grades after not connect with 10pf grades, 100pf grades, 1000pf grades, 5V grades respectively with
10pf grades, 100pf grades, 1000pf grades connection after respectively lead to 50pC grades, 500pC grades, 5000pC grades.Become field test in the change of current
In the process, exchange rheology carries out local discharge test, is often susceptible to complicated interference signal, the pulse quantity of electric charge gear at the scene
Switch 273 include 10 output gears, correspond to respectively 5pC, 10pC, 20pC, 50pC, 100pC, 200pC, 500pC, 1000pC,
The pulse quantity of electric charge of 2000pC, 5000pC export, thus can provide larger calibration pulse quantity of electric charge output, meet measure loop
With the particular/special requirement of equipment, while the local discharge test of plurality of devices test product can be met again.
In the present embodiment, pulse quantity of electric charge driving switch 27 is rotation driving switch, corresponding selection 5/10/20/50/100/
The pulse quantity of electric charge of 200/500/1000/2000/5000pC exports.Rotate driving switch control is internal step pulse generation
The connected relation of the voltage Uo of device 25 and the capacitance Co of multi gear position capacitance module 26.
Each gear on pulse quantity of electric charge driving switch 27 corresponds to a kind of connection type：Rotation driving switch pushes 5pc
Shelves, as the voltage Uo=0.5V of step pulse generator 25 is connected to the capacitance Co=10pf of multi gear position capacitance module 26, from
And export the impulse waveform of pulse quantity of electric charge Qo=UoCo=5pc；
Rotation gear pushes 10pc grade, the as voltage Uo=1V of step pulse generator 25 and multi gear position capacitance module 26
Capacitance Co=10pf connection, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=10pc；
Rotation gear pushes 20pc grade, the as voltage Uo=2V of step pulse generator 25 and multi gear position capacitance module 26
Capacitance Co=10pf connection, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=20pc；
Rotation gear pushes 50pc grade, the as voltage Uo=5V of step pulse generator 25 and multi gear position capacitance module 26
Capacitance Co=10pf connection, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=50pc；
Rotation gear pushes 100pc grade, the as voltage Uo=1V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=100pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=100pc；
Rotation gear pushes 200pc grade, the as voltage Uo=2V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=100pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=200pc；
Rotation gear pushes 500pc grade, the as voltage Uo=5V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=100pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=500pc；
Rotation gear pushes 1000pc grade, the as voltage Uo=1V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=1000pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=1000pc；
Rotation gear pushes 2000pc grade, the as voltage Uo=2V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=1000pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=2000pc；
Rotation gear pushes 5000pc grade, the as voltage Uo=5V of step pulse generator 25 and multi gear position capacitance module
26 capacitance Co=1000pf connections, to export the impulse waveform of pulse quantity of electric charge Qo=UoCo=5000pc.
The adjustable impulse generator of the gear 7 further includes the pulse frequency tune with different pulse generation rate-adaptive pacemaker gears
Mould preparation block 28 is equipped with pulse generation frequency on operation panel and driving switch 29, pulse generation frequency selection gear is selected to open
Each selection gear on pass 29 adjusts each pulse generation rate-adaptive pacemaker gear pair in module 28 with the pulse frequency respectively
It should connect.Pulse frequency adjusts module 28 and makes the frequency of impulse generator 7 adjustable, can pass through and manipulate the selection of pulse generation frequency
Driving switch 29 changes pulse generation frequency, according to local discharge test scene disturbed condition, the corresponding pulse generation frequency of unrestricted choice
Rate selects corresponding pulse generation frequency selection gear, can directly control pulse generation frequency module and export corresponding frequency
Impulse waveform, to realize the calibration steps for being efficiently completed live local discharge test.
The pulse frequency adjustment module 28 on each pulse generation rate-adaptive pacemaker gear be respectively 500Hz, 750Hz,
1000Hz.Facilitate and corresponding pulse generation frequency is selected according to local discharge test scene disturbed condition, reduces error of test data.
Above-listed detailed description is illustrating for one of present invention possible embodiments, which is not to limit
The scope of the claims of the present invention, all equivalence enforcements or change without departing from carried out by the present invention are intended to be limited solely by the scope of the claims of this case
In.
Claims (5)
1. a kind of multi-functional live local discharge test system, including voltage regulator controllers, variable-frequency power sources, exciting transformer, reactor,
Product to be tested, detection impedance, impulse generator and electric pulse PD meter, the input terminal of the voltage regulator controllers connect power-frequency voltage,
The input terminal of the output end connection variable-frequency power sources of the voltage regulator controllers, the input of the output end connection exciting transformer of variable-frequency power sources
End, the output end of exciting transformer is in parallel with reactor, and reactor, product to be tested, detection impedance are connected into measure loop, detect
One end ground connection that impedance is connect with reactor, impulse generator are connected in parallel on the both ends of product to be tested, electric pulse PD meter and detection
Impedance connects, it is characterised in that：The detection impedance include low noise amplifying circuit, tunable capacitor module, adjustable resistance module,
Controllable impedance module, signal input part, signal output end and ground terminal, power supply module, wherein tunable capacitor module, adjustable electric
Resistance module, controllable impedance module are in parallel into RLC module, one end and signal input part, the power supply module of low noise amplifying circuit
Connection, the other end of low noise amplifying circuit and one end of RLC module connect, and the other end of RLC module is connect with ground terminal, believe
Number output end is in parallel with RLC module.
2. the multi-functional live local discharge test system of one kind according to claim 1, it is characterised in that：The detection impedance
Further include impedance control module, the impedance control module respectively with the power supply module, the tunable capacitor module, described adjustable
Resistive module, controllable impedance module connection.
3. the multi-functional live local discharge test system of one kind according to claim 1 or 2, it is characterised in that：The pulse
Generator include pulse output module, battery module, Battery control module, centralized control module, battery capacity detection module,
LED drive control modules and LED charactrons display module, wherein the input terminal of Battery control module is connect with battery module, electricity
The output end of pond control module and the first input interface of centralized control module connect, the input terminal and concentration of pulse output module
First output interface of control module connects, and the input terminal of battery capacity detection module is connect with battery module, battery capacity inspection
Survey module output end and centralized control module the second input interface connect, the second output interface of centralized control module with
The input terminal of LED drive control modules connects, the input of the output end and LED charactrons display module of LED drive control modules
End connection.
4. the multi-functional live local discharge test system of one kind according to claim 3, it is characterised in that：The pulse output
Module includes the step pulse generator with different voltages gear, multi gear position capacitance module, arteries and veins with different capacitance gears
Rush quantity of electric charge driving switch, pulse output end, wherein each voltage gear on the step pulse generator respectively with the multi gear
Lead to each pulse quantity of electric charge on the pulse quantity of electric charge driving switch after at least one capacitance gear connection of position capacitance module
The output end of the input terminal of gear, pulse quantity of electric charge driving switch is connect with pulse output end.
5. the multi-functional live local discharge test system of one kind according to claim 4, it is characterised in that：The pulse output
Module further includes the pulse frequency adjustment module and pulse generation frequency selection shelves for having different pulse generation rate-adaptive pacemaker gears
Bit switch, the pulse generation frequency select each selection gear on driving switch to be adjusted in module with the pulse frequency respectively
Each pulse generation rate-adaptive pacemaker gear is correspondingly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779601.1A CN105277860B (en) | 2015-11-12 | 2015-11-12 | A kind of multi-functional live local discharge test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779601.1A CN105277860B (en) | 2015-11-12 | 2015-11-12 | A kind of multi-functional live local discharge test system |
Publications (2)
| Publication Number | Publication Date |
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| CN105277860A CN105277860A (en) | 2016-01-27 |
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| CN110161383B (en) * | 2019-04-30 | 2020-07-28 | 云南电网有限责任公司电力科学研究院 | Switch cabinet partial discharge detection device |
| CN112557853B (en) * | 2020-12-19 | 2023-05-30 | 哈尔滨恒达交通设备技术开发有限公司 | Composite intelligent insulation detector for railway carriage |
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| CN204479706U (en) * | 2015-04-03 | 2015-07-15 | 王宁 | Digitizing wideband partial discharge test system |
| CN205120906U (en) * | 2015-11-12 | 2016-03-30 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Multi -functional on --spot partial discharge test system |
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| JP2002082143A (en) * | 2000-09-05 | 2002-03-22 | Michio Takaoka | Measurement of partial discharge of electrical equipment |
| CN202870287U (en) * | 2012-09-26 | 2013-04-10 | 广州安电测控技术有限公司 | Calibration pulse generator used in partial discharge measurement |
| CN203069734U (en) * | 2013-02-20 | 2013-07-17 | 广州南方电力集团技术有限公司 | 300kW transformer partial discharge and induced over voltage withstand test system |
| CN103176160A (en) * | 2013-03-11 | 2013-06-26 | 广东电网公司电力科学研究院 | Local discharge simulation calibrating device |
| CN104375062A (en) * | 2013-08-13 | 2015-02-25 | 青岛菲特电器科技有限公司 | Power device for controlled electric reactor induced over voltage withstand test |
| CN103499779A (en) * | 2013-10-17 | 2014-01-08 | 国家电网公司 | UHV (Ultra High Voltage) transformer field variable frequency partial discharge test device |
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