CN106908721A - A kind of gas-insulated switchgear experimental rig and method - Google Patents
A kind of gas-insulated switchgear experimental rig and method Download PDFInfo
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- CN106908721A CN106908721A CN201710256006.9A CN201710256006A CN106908721A CN 106908721 A CN106908721 A CN 106908721A CN 201710256006 A CN201710256006 A CN 201710256006A CN 106908721 A CN106908721 A CN 106908721A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The present invention discloses a kind of gas-insulated switchgear experimental rig and method, it is related to gas-insulated switchgear Insulation Test technical field, voltage tester waveform needed for can flexibly, quickly obtaining gas-insulated switchgear, improves the testing efficiency of gas-insulated switchgear.The gas-insulated switchgear experimental rig includes：Power supply unit and the detection unit for testing gas-insulated switchgear, test gas-insulated switchgear are connected in parallel with detection unit.The gas-insulated switchgear test method includes the gas-insulated switchgear experimental rig that above-mentioned technical proposal is carried.Gas-insulated switchgear experimental rig and method that the present invention is provided are used for the detection of gas-insulated switchgear.
Description
Technical field
Set the present invention relates to gas-insulated switchgear Insulation Test technical field, more particularly to a kind of gas-insulated switch
Standby experimental rig and method.
Background technology
Gas-insulated switchgear (GIS) is with floor space is small, operational reliability is high, maintenance cycle is long, do not receive the external world
The series of advantages such as ambient influnence, are widely applied in power system.It is exhausted in GIS with the increase of the GIS amounts of putting into operation
Reason barrier happens occasionally.GIS is additionally, since for totally-enclosed system, the failure cause for GIS lacks accurately understanding at present,
Therefore need to study insulating properties of the GIS under different operating conditions.
When GIS is under different operating conditions, GIS will be in different voltage waveforms, for example：During normal operation
GIS is in the waveform of alternating voltage；When breaker disconnects, GIS can be in the waveform of remaining DC voltage；Dispatching from the factory
During with field test, the insulating properties of GIS are examined usually using surge voltage, GIS is in the waveform of surge voltage
In；And when combined floodgate is switched, GIS can be in the waveform of DC stacked surge voltage；When circuit is subject to lightning wave and operation ripple
During invasion and attack, surge voltage again can be superimposed with alternating voltage, GIS is in the waveform of exchange superposition surge voltage.Therefore, exist
During studying the flash-over characteristic of GIS, GIS need to be tested using above-mentioned different voltage waveform, so that GIS
Obtain preferably insulating properties.And in the prior art, during being tested GIS using different voltage waveforms, need to take
Different test platforms are built, for example：When being tested GIS in the waveform of alternating voltage, AC voltage test need to be carried and put down
Platform, and when being tested GIS in the waveform of surge voltage, impulse voltage test platform need to be carried again.
It can be seen that, it is necessary to use multiple different test platforms during prior art is studied GIS flash-over characteristics
GIS is tested, and when GIS is placed in into different test platforms to obtain different voltage tester waveforms, it is necessary to repeatedly more
Changing test platform could obtain corresponding voltage tester waveform, therefore it is relatively low to result in GIS testing efficiencies.
The content of the invention
It is an object of the invention to provide a kind of gas-insulated switchgear experimental rig and method, can flexibly, quickly
Obtain gas-insulated switchgear needed for voltage tester waveform, improve gas-insulated switchgear testing efficiency.
To achieve these goals, the present invention provides following technical scheme：
In a first aspect, the invention provides a kind of gas-insulated switchgear experimental rig, including：Power supply unit and it is used for
The detection unit of gas-insulated switchgear is tested, the test gas-insulated switchgear is in parallel with the detection unit even
Connect；
Said supply unit include direct voltage source, alternating-current voltage source and surge voltage source, the direct voltage source it is defeated
Go out end to be connected with the test gas-insulated switchgear by DC voltage protection module, the output end of the alternating-current voltage source
It is connected with the test gas-insulated switchgear by alternating voltage protection module, the output end in the surge voltage source passes through
Surge voltage protection module is connected with the test gas-insulated switchgear.
Compared with prior art, the gas-insulated switchgear experimental rig that the present invention is provided has the advantages that：
In the gas-insulated switchgear experimental rig that the present invention is provided, set straight by the output end of direct voltage source
Stream voltage protection module, can not only play partial pressure effect to reduce impact of the surge voltage to direct voltage source, and can also
Enough playing metering function prevents the high current in loop from being damaged to direct voltage source, so as to be effectively protected DC voltage
Source, extends the service life of direct voltage source；Similarly, mould is protected by setting alternating voltage in the output end of alternating-current voltage source
Block so that alternating voltage protection module can play partial pressure effect, reduces surge voltage and DC voltage to alternating-current voltage source
Impact, so as to be effectively protected alternating-current voltage source, extends the service life of alternating-current voltage source；By the output in surge voltage source
End sets surge voltage protection module so that surge voltage protection module can play the work of isolated DC voltage and alternating voltage
With so as to be effectively protected surge voltage source, the service life in extension surge voltage source；In addition, in order that gas-insulated switch
The test event of equipment is more comprehensively, as a result more accurate, it is necessary to be set to gas-insulated switch using multiple voltage test waveform respectively
It is standby to be tested, therefore, user can be according to required voltage tester waveform, corresponding selection direct voltage source, alternating-current voltage source
Closure with surge voltage source is turned on, and obtains corresponding voltage tester waveform by detection unit detection so that gas-insulated
Switchgear can be tested under voltage tester waveform obtained above.It can be seen that, the gas-insulated provided using the present invention
Switchgear experimental rig, is achieved with above-mentioned multiple voltage test waveform, therefore, it is possible to lift gas without changing test platform
The testing efficiency of body insulated switching installation.
Second aspect, the invention provides the test method of gas-insulated switchgear, is applied to described in claim 2
Gas-insulated switchgear experimental rig, the test method of the gas-insulated switchgear includes：
Instructed according to power supply, out-put supply control signal；
According to the power control signal, the direct voltage source, the alternating-current voltage source, the surge voltage source are chosen
In for or two kinds closure conducting；
Using being used in the detection unit detection direct voltage source, the alternating-current voltage source, the surge voltage source
Or the conducting of two kinds of closures forms voltage waveform, the voltage waveform is used to test the flash-over characteristic of gas-insulated switchgear.
Compared with prior art, the beneficial effect of the test method of the gas-insulated switchgear that second aspect present invention is provided
Fruit is identical with the beneficial effect of the gas-insulated switchgear experimental rig that first aspect present invention is provided, and will not be described here.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes a part of the invention, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structured flowchart of gas-insulated switchgear experimental rig in the embodiment of the present invention one；
Fig. 2 is the flow chart of gas-insulated switchgear test method in the embodiment of the present invention two.
Reference：
11- alternating-current voltage sources, 12- alternating voltage protection modules；
21- direct voltage sources, 22- DC voltage protection modules；
31- surge voltages source, 32- surge voltage protection modules；
41- gates, 42- power-supply controller of electric；
51- signal conversion chips, 52- earthing controllers；
61- RC dividers, 62- waveforms detection instrument.
Specific embodiment
Embodiment one
In order to further illustrate gas-insulated switchgear experimental rig provided in an embodiment of the present invention, with reference to explanation
Book accompanying drawing is described in detail.
Fig. 1 is referred to, a kind of gas-insulated switchgear experimental rig provided in an embodiment of the present invention includes：Power supply unit
With the detection unit for testing gas-insulated switchgear, test gas-insulated switchgear and be connected in parallel with detection unit；
Power supply unit includes direct voltage source 21, alternating-current voltage source 11 and surge voltage source 31, and the output end of direct voltage source 21 passes through
DC voltage protection module 22 is connected with test gas-insulated switchgear, and the output end of alternating-current voltage source 11 passes through alternating voltage
Protection module 12 is connected with test gas-insulated switchgear, and the output end in surge voltage source 31 passes through surge voltage protection module
32 are connected with test gas-insulated switchgear.
During specific implementation, user is by controlling the closure of direct voltage source 21, alternating-current voltage source 11 and surge voltage source 31
Conducting, obtains corresponding voltage tester waveform, for example, when conducting direct current voltage source 21 is only closed, can be examined by detection unit
Measure out DC voltage waveform；When only closure conducting alternating-current voltage source 11, alternating voltage is drawn by the way that detection unit is detectable
Waveform；When only closure conducting surge voltage source 31, High Voltage Impulse Waveform is drawn by the way that detection unit is detectable；When closure is turned on
When direct voltage source 21 and alternating-current voltage source 11, DC stacked alternating voltage waveform is drawn by the way that detection unit is detectable；When closing
When closing conducting direct current voltage source 21 and surge voltage source 31, DC stacked surge voltage ripple is drawn by the way that detection unit is detectable
Shape；When closure conducting alternating-current voltage source 11 and surge voltage source 31, exchange superposition impact is drawn by the way that detection unit is detectable
Voltage waveform.
By in the gas-insulated switchgear experimental rig that above-mentioned specific implementation process, the present embodiment are provided, leading to
The output end crossed in direct voltage source 21 sets DC voltage protection module 22, can not only play partial pressure effect to reduce impact
Impact of the voltage to direct voltage source 21, but also metering function can be played prevent the high current in loop to direct voltage source
21 damage, and so as to be effectively protected direct voltage source 21, extend the service life of direct voltage source 21；Similarly, by
The output end of alternating-current voltage source 11 sets alternating voltage protection module 12 so that alternating voltage protection module 12 can play partial pressure
Effect, reduces the impact of surge voltage and DC voltage to alternating-current voltage source 11, so as to be effectively protected alternating-current voltage source 11, prolongs
The service life of alternating-current voltage source long 11；Surge voltage protection module 32 is set by the output end in surge voltage source 31, is made
Obtaining surge voltage protection module 32 can play a part of isolated DC voltage and alternating voltage, so as to be effectively protected impact electricity
Potential source 31, the service life in extension surge voltage source 31；In addition, in order that the test event of gas-insulated switchgear is more complete
Face, it is as a result more accurate, it is necessary to tested gas-insulated switchgear using multiple voltage test waveform respectively, therefore, use
Family can be according to required voltage tester waveform, corresponding selection direct voltage source 21, alternating-current voltage source 11 and surge voltage source 31
Closure conducting, and by detection unit detect obtain corresponding voltage tester waveform so that gas-insulated switchgear can
Tested under voltage tester waveform obtained above.It can be seen that, the gas-insulated switchgear provided using the present embodiment is tried
Experiment device, is achieved with above-mentioned multiple voltage test waveform, therefore, it is possible to lift gas insulated switch without changing test platform
The testing efficiency of equipment.
Specifically, in order to realize being switched fast for voltage tester waveform, referring to Fig. 1, power supply unit also includes gate
41 and power-supply controller of electric 42, the output end of gate 41 is connected with the input of power-supply controller of electric 42, power-supply controller of electric 42 it is defeated
Go out end to be connected with direct voltage source 21, alternating-current voltage source 11 and surge voltage source 31 respectively；
Gate 41 is used to be instructed according to power supply, out-put supply control signal；
Power-supply controller of electric 42 is used for according to power control signal, chooses direct voltage source 21, alternating-current voltage source 11, impact electricity
One or two closure conductings in potential source 31.
During specific implementation, Fig. 2 is referred to, the gas-insulated switchgear test method that the present embodiment is provided is as follows：
S11：Instructed according to power supply, out-put supply control signal；
S21：According to power control signal, the use in direct voltage source 21, alternating-current voltage source 11, surge voltage source 31 is chosen
In or two kinds closure conducting；
S3：Using detection unit detection direct voltage source 21, alternating-current voltage source 11, in surge voltage source 31 for or two
Plant closure conducting and form voltage waveform, voltage waveform is used to test the flash-over characteristic of gas-insulated switchgear.
By above-mentioned specific implementation process, in the gas-insulated switchgear experimental rig of the present embodiment offer, by
Be connected with power-supply controller of electric 42 in gate 41, power-supply controller of electric 42 again respectively with direct voltage source 21, alternating-current voltage source 11 and
Surge voltage source 31 connects, therefore, when the power supply instruction that gate 41 is received is only closure conducting direct current voltage source 21
When, the control signal of the correspondence output closure conducting direct current of gate 41 voltage source 21, power-supply controller of electric 42 is straight according to closure conducting
The control signal of voltage source 21 is flowed, the closure conducting of direct voltage source 21 is chosen such that it is able to obtain DC voltage waveform；Work as gating
When the power supply instruction that device 41 is received is only closure conducting alternating-current voltage source 11, the correspondence output closure conducting of gate 41 is handed over
The control signal of voltage source 11 is flowed, power-supply controller of electric 42 chooses exchange according to the control signal of closure conducting alternating-current voltage source 11
The closure conducting of voltage source 11 such that it is able to obtain alternating voltage waveform；When the power supply instruction that gate 41 is received is only
During closure conducting surge voltage source 31, the control signal in the correspondence output closure conducting surge voltage of gate 41 source 31, power supply control
Device processed 42 chooses surge voltage source 31 and closes conducting according to the control signal in closure conducting surge voltage source 31 such that it is able to
To High Voltage Impulse Waveform；When the power supply instruction that gate 41 is received is closure conducting direct current voltage source 21 and alternating voltage
During source 11, the control signal of the correspondence output closure conducting direct current of gate 41 voltage source 21 and alternating-current voltage source 11, power supply
Device 42 chooses direct voltage source 21 and alternating current according to closure conducting direct current voltage source 21 and the control signal of alternating-current voltage source 11
The closure conducting of potential source 11 such that it is able to obtain DC stacked alternating voltage waveform；When the power supply that gate 41 is received refers to
Make during for closure conducting direct current voltage source 21 and surge voltage source 31, the correspondence output closure conducting direct current of gate 41 voltage source 21
With the control signal in surge voltage source 31, power-supply controller of electric 42 is according to closure conducting direct current voltage source 21 and surge voltage source 31
Control signal, chooses direct voltage source 21 and the closure conducting of surge voltage source 31 such that it is able to obtain DC stacked surge voltage
Waveform；When the power supply instruction that gate 41 is received is for closure conducting alternating-current voltage source 11 and surge voltage source 31, choosing
The logical correspondence of device 41 output closure conducting alternating-current voltage source 11 and the control signal in surge voltage source 31, power-supply controller of electric 42 is according to closing
The control signal in conducting alternating-current voltage source 11 and surge voltage source 31 is closed, alternating-current voltage source 11 is chosen and surge voltage source 31 is closed
Conducting such that it is able to obtain exchange superposition High Voltage Impulse Waveform.
It can be seen that, gate 41 can be instructed according to power supply, and DC voltage is flexibly controlled by power-supply controller of electric 42
One or two closure conductings in source 21, alternating-current voltage source 11, surge voltage source 31, so as to obtain corresponding DC voltage ripple
Shape, alternating voltage waveform, High Voltage Impulse Waveform, DC stacked alternating voltage waveform, DC stacked High Voltage Impulse Waveform with exchange
High Voltage Impulse Waveform totally six kinds of voltage tester waveforms are superimposed, gas-insulated switchgear is met complete needed for test process
Portion's voltage tester waveform, in addition, by the setting of gate 41, all enough realizing the conducting of remote control voltage source, it is to avoid height
Voltage causes the generation of dangerous situation to operating personnel closely so that operating personnel being capable of remote control gate 41, reality
Show being switched fast for different voltage tester waveforms, so that the testing efficiency of lift gas insulated switching installation.
You need to add is that, Fig. 1 is referred to, in order to further avoid the electric current in loop to direct voltage source 21, exchange
Voltage source 11 and surge voltage source 31 damage, and power supply unit also includes signal conversion chip 51 and earthing controller 52, letter
The input of number conversion chip 51 is connected with the output end of gate 41, the output end and earthing controller of signal conversion chip 51
52 input connection, the output end of earthing controller 52 respectively with direct voltage source 21, alternating-current voltage source 11 and surge voltage
Source 31 connects；
Signal conversion chip 51 is used to be instructed according to power supply, output ground connection control signal；
Earthing controller 52 is used for according to ground connection control signal, control direct voltage source 21, alternating-current voltage source 11, impact electricity
One or two in potential source 31 disconnect ground connection.
During specific implementation, Fig. 2 is referred to, the gas-insulated switchgear test method includes：
S12：Instructed according to power supply, using the output ground connection control signal of signal conversion chip 51；
S22：According to ground connection control signal, using the control of earthing controller 52 direct voltage source 21, alternating-current voltage source 11, punching
One or two hit in voltage source 31 disconnect ground connection.
It can be seen from above-mentioned specific implementation process, signal conversion chip 51 is sequentially connected by the output end of gate 41
With earthing controller 52, so as to can realize when the control signal of the output closure of gate 41 conducting direct current voltage source 21, signal
Conversion chip 51 receives the control signal of the output of gate 41, the ground signalling and surge voltage in correspondence output AC voltage source 11
The ground signalling in source 31 so that earthing controller 52 controls alternating-current voltage source 11 and surge voltage source 31 according to above-mentioned ground signalling
It is grounded respectively；When the control signal of the output closure conducting alternating-current voltage source 11 of gate 41, signal conversion chip 51 receives choosing
The control signal of the logical output of device 41, the ground signalling of correspondence output direct voltage source 21 and the ground signalling in surge voltage source 31,
So that earthing controller 52 controls direct voltage source 21 and surge voltage source 31 to be grounded respectively according to above-mentioned ground signalling；Work as gating
During the control signal in the output closure conducting surge voltage of device 41 source 31, signal conversion chip 51 receives the control of the output of gate 41
Signal, the ground signalling of correspondence output direct voltage source 21 and the ground signalling of alternating-current voltage source 11 so that earthing controller 52
Direct voltage source 21 and alternating-current voltage source 11 is controlled to be grounded respectively according to above-mentioned ground signalling；When the output closure conducting of gate 41
During the control signal of direct voltage source 21 and alternating-current voltage source 11, signal conversion chip 51 receives the control letter of the output of gate 41
Number, the ground signalling in correspondence output surge voltage source 31 so that earthing controller 52 is according to above-mentioned ground signalling control impact electricity
Potential source 31 is grounded；When the control signal in the output closure conducting direct current of gate 41 voltage source 21 and surge voltage source 31, signal
Conversion chip 51 receives the control signal of the output of gate 41, the ground signalling in correspondence output AC voltage source 11 so that ground connection
Controller 52 controls alternating-current voltage source 11 to be grounded according to above-mentioned ground signalling；When the output closure conducting alternating-current voltage source of gate 41
11 and surge voltage source 31 control signal when, signal conversion chip 51 receive gate 41 output control signal, correspondence it is defeated
Go out the ground signalling of direct voltage source 21 so that earthing controller 52 controls direct voltage source 21 to connect according to above-mentioned ground signalling
Ground；By the setting of earthing controller 52, ground protection further can be carried out to voltage source, prevent voltage source by loop
Electric current is destroyed, and extends the service life of above-mentioned voltage source.
It is worth noting that, gate 41, power-supply controller of electric 42, signal conversion chip 51 and ground connection control in the present embodiment
What device processed 52 was used is device common in the art, and connected mode each other is also using normal in the prior art
The connected mode seen, the present embodiment only needs the device that each is had into corresponding function to be closed by the connection given by the present embodiment
System is attached, you can obtain the technical scheme of the present embodiment, wherein being not related to the improvement of any software aspects.
You need to add is that, alternating voltage protection module 12 includes the first protective resistance and capacitance, alternating-current voltage source
11 pass sequentially through the first protective resistance and capacitance is connected with test gas-insulated switchgear.DC voltage protection module 22
It is the second protective resistance, surge voltage protection module 32 is batching sphere gap.
During specific implementation, when alternating-current voltage source 11 and surge voltage source 31 are in closure conducting state, hand over
Stream voltage source 11, surge voltage source 31 and detection unit are collectively forming closed-loop path, and now, excessive surge voltage may lead to
Cross closed-loop path alternating-current voltage source 11 is caused to puncture, and the first protective resistance is series at alternating-current voltage source 11 and surge voltage
Between source 31, make it have the effect of good partial pressure, so, excessive surge voltage by after the first protective resistance, voltage
Can be greatly reduced, and reduce after voltage will not puncture alternating-current voltage source 11；In addition, working as alternating-current voltage source 11 and DC voltage
When source 21 is in closure conducting state, alternating-current voltage source 11, direct voltage source 21 and detection unit can be collectively forming and close back
Road, now, DC voltage is likely to alternating-current voltage source 11 can be caused by closed-loop path to damage, now, by alternating current
Connected between potential source 11 and direct voltage source 21 capacitance, because capacitance has the effect for intercepting DC voltage, so that
So that the effective isolated DC voltage of capacitance, it is to avoid DC voltage causes to damage to alternating-current voltage source 11.It can be seen that, by
The setting of one protective resistance and capacitance, can be effectively protected alternating-current voltage source 11 and be not damaged by, and extend alternating-current voltage source
11 service life.Exemplary, the first protective resistance is the water resistance of 1M Ω, and capacitance is the ceramics of 50nF from capacitance
Electric capacity.
When direct voltage source 21 and surge voltage source 31 are in closure conducting state, alternating-current voltage source 11, impact electricity
Potential source 31 and detection unit can be collectively forming closed-loop path, and now, excessive surge voltage may be by closed-loop path to straight
Stream voltage source 21 is caused to puncture, and the second protective resistance is series between direct voltage source 21 and surge voltage source 31, makes it
Effect with good partial pressure, so, excessive surge voltage by after the second protective resistance, voltage can be greatly reduced,
So that the voltage after reducing will not puncture direct voltage source 21；Similarly, when direct voltage source 21 and alternating-current voltage source 11 are equal
During in closure conducting state, direct voltage source 21, alternating-current voltage source 11 and detection unit can be collectively forming closed-loop path, this
When, the second protective resistance with larger resistance can be greatly reduced high current in loop, it is to avoid the high current in loop is to straight
Stream voltage source is damaged.Exemplary, the second protective resistance is the water resistance of 20M Ω from resistance.
When surge voltage source 31 and the direct voltage source 21 of alternating-current voltage source 11/ are in closure conducting state, impact electricity
Potential source 31, the direct voltage source 21 of alternating-current voltage source 11/ and detection unit can be collectively forming closed-loop path, because batching sphere gap can
Isolated DC voltage and alternating voltage, therefore, by the setting of batching sphere gap, it is prevented from DC voltage and alternating voltage liquidates
Hit voltage source 31 to cause to damage, and then extend the service life in surge voltage source 31.Exemplary, batching sphere gap is from a diameter of
The hemisphere of 500mm.
In addition, please referring next to Fig. 1, detection unit is included for the RC divider 61 of partial pressure and for showing voltage wave
The waveforms detection instrument 62 of shape, the first electrode of RC divider 61 is connected with one end of waveforms detection instrument 62, RC divider 61
Second electrode and the other end of waveforms detection instrument 62 be connected with the two ends of gas-insulated switchgear respectively.
During specific implementation, because the value of waveforms detection instrument 62 is limited, and in order that waveforms detection instrument 62 can safely, it is accurate
The true voltage tester waveform for detecting gas-insulated switchgear, the present embodiment is by RC divider 61 and waveforms detection instrument 62
It is connected in series so that RC divider 61 can in proportion reduce the voltage tester waveform at gas-insulated switchgear two ends, enter
And pass through the voltage tester waveform that the safe and accurate detection of waveforms detection instrument 62 obtains gas-insulated switchgear.
It should be noted that as the species and number of RC divider 61, those skilled in the art can be according to reality
Applicable cases are selected and set, and the present embodiment no longer makes limitation to this herein, and in actual applications, preferably intrinsic standoff ratio is
20000:1 RC divider, now can relatively reasonable and accurately show corresponding voltage by waveforms detection instrument 62
Test waveform.
Embodiment two
Fig. 2 is referred to, a kind of gas-insulated switchgear test method is the embodiment of the invention provides, being applied to right will
The gas-insulated switchgear experimental rig in 2 is sought, the test method of gas-insulated switchgear includes：
S11：Instructed according to power supply, out-put supply control signal；
S21：According to power control signal, in selection direct voltage source 21, alternating-current voltage source 11, surge voltage source 31 one
Plant or two kinds of closure conductings；
S3：Using the one kind or two in detection unit detection direct voltage source 21, alternating-current voltage source 11, surge voltage source 31
Plant closure conducting and form voltage waveform, voltage waveform is used to test the flash-over characteristic of gas-insulated switchgear.
Compared with prior art, the gas-insulated switchgear test method that the present embodiment is provided is carried with above-described embodiment one
The beneficial effect of the gas-insulated switchgear experimental rig of confession is identical, will not be described here.
In addition, please continue to refer to Fig. 2, when power supply unit also includes signal conversion chip 51 and earthing controller 52, gas
The test method of body insulated switching installation includes：
S12：Instructed according to power supply, using the output ground connection control signal of signal conversion chip 51；
S22：According to ground connection control signal, using the control of earthing controller 52 direct voltage source 21, alternating-current voltage source 11, punching
One or two hit in voltage source 31 disconnect ground connection.
Compared with prior art, the gas-insulated switchgear test method that the present embodiment is provided is carried with above-described embodiment one
The beneficial effect of the gas-insulated switchgear experimental rig of confession is identical, will not be described here.
In the description of above-mentioned implementation method, specific features, structure, material or feature can be at any one or many
Combined in an appropriate manner in individual embodiment or example.
More than, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (8)
1. a kind of gas-insulated switchgear experimental rig, it is characterised in that including：Power supply unit and for testing gas-insulated
The detection unit of switchgear, the test gas-insulated switchgear is connected in parallel with the detection unit；
Said supply unit includes direct voltage source, alternating-current voltage source and surge voltage source, the output end of the direct voltage source
It is connected with the test gas-insulated switchgear by DC voltage protection module, the output end of the alternating-current voltage source passes through
Alternating voltage protection module is connected with the test gas-insulated switchgear, and the output end in the surge voltage source is by impact
Voltage protection module is connected with the test gas-insulated switchgear.
2. gas-insulated switchgear experimental rig according to claim 1, it is characterised in that said supply unit is also wrapped
Gate and power-supply controller of electric are included, the output end of the gate is connected with the input of the power-supply controller of electric, the power supply
The output end of controller is connected with the direct voltage source, the alternating-current voltage source and the surge voltage source respectively；
The gate is used to be instructed according to power supply, out-put supply control signal；
The power-supply controller of electric is used for according to the power control signal, choose the direct voltage source, the alternating-current voltage source,
One or two closure conductings in the surge voltage source.
3. gas-insulated switchgear experimental rig according to claim 2, it is characterised in that said supply unit is also wrapped
Signal conversion chip and earthing controller are included, the input of the signal conversion chip is connected with the output end of the gate,
The output end of the signal conversion chip is connected with the input of the earthing controller, the output end point of the earthing controller
It is not connected with the direct voltage source, the alternating-current voltage source and the surge voltage source；
The signal conversion chip is used to be instructed according to the power supply, output ground connection control signal；
The earthing controller is used for according to the ground connection control signal, control the direct voltage source, the alternating-current voltage source,
One or two in the surge voltage source disconnect ground connection.
4. gas-insulated switchgear experimental rig according to claim 1, it is characterised in that the alternating voltage protection
Module include the first protective resistance and capacitance, the alternating-current voltage source pass sequentially through first protective resistance and it is described every
Straight electric capacity is connected with the test gas-insulated switchgear.
5. gas-insulated switchgear experimental rig according to claim 1, it is characterised in that the DC voltage protection
Module is the second protective resistance, and the surge voltage protection module is batching sphere gap.
6. gas-insulated switchgear experimental rig according to claim 1, it is characterised in that the detection unit includes
RC divider for partial pressure and the waveforms detection instrument for showing voltage waveform, the first electrode of the RC divider with
The other end difference of one end connection of the waveforms detection instrument, the second electrode of the RC divider and the waveforms detection instrument
Two ends with the gas-insulated switchgear are connected.
7. a kind of gas-insulated switchgear test method, it is characterised in that be applied to the gas-insulated described in claim 2 and open
Equipment test device is closed, the test method of the gas-insulated switchgear includes：
Instructed according to power supply, out-put supply control signal；
According to power control signal, one or two closures chosen in direct voltage source, alternating-current voltage source, surge voltage source are led
It is logical；
Using one or two closure conducting shapes in detection unit detection direct voltage source, alternating-current voltage source, surge voltage source
Into voltage waveform, the voltage waveform is used to test the flash-over characteristic of gas-insulated switchgear.
8. gas-insulated switchgear test method according to claim 7, it is characterised in that when power supply unit also includes
When signal conversion chip and earthing controller, the test method of the gas-insulated switchgear includes：
Instructed according to power supply, using signal conversion chip output ground connection control signal；
According to ground connection control signal, using in earthing controller control direct voltage source, alternating-current voltage source, surge voltage source
Plant or two kinds disconnect ground connection.
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Effective date of registration: 20210729 Address after: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Applicant after: China South Power Grid International Co.,Ltd. Applicant after: XI'AN JIAOTONG University Address before: Room 505-508, 4th and 5th floor, No.6 Huasui Road, Zhujiang New Town, Tianhe District, Guangzhou, Guangdong 510623 Applicant before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID Applicant before: XI'AN JIAOTONG University |