CN110514976A - A kind of GIS insulation defect monitoring device, system and detection method - Google Patents
A kind of GIS insulation defect monitoring device, system and detection method Download PDFInfo
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- CN110514976A CN110514976A CN201910936376.6A CN201910936376A CN110514976A CN 110514976 A CN110514976 A CN 110514976A CN 201910936376 A CN201910936376 A CN 201910936376A CN 110514976 A CN110514976 A CN 110514976A
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
Abstract
The embodiment of the invention discloses a kind of GIS insulation defect monitoring device, system and detection method, which includes voltage regulator module, overheat sealed gas chamber, physical imperfection detection module, thermometer and mass spectrograph；The input terminal of the voltage regulator module exports adjustable voltage for input AC electricity, the output end of the voltage regulator module；The physical imperfection detection module is set in the overheat sealed gas chamber, and the physical imperfection detection module is electrically connected with the output end of the voltage regulator module；Thief hatch and detection mouth are provided on the overheat sealed gas chamber wall, the mass spectrograph detects gas component in the overheat sealed gas chamber by the thief hatch, and the thermometer acquires the temperature in the overheat sealed gas chamber by the detection mouth.Hot defect can occur to GIS device inside and carry out real-time monitoring for the embodiment of the present invention, and the data convenient for that will acquire form diagnostic decision tree.
Description
Technical field
The present embodiments relate to GIS defects detection field more particularly to a kind of GIS insulation defect monitoring devices, system
And detection method.
Background technique
Gas insulated combined electrical equipment (Gas Insulated Switchgear, GIS) is set in power transmission and transformation system
It is standby, once breaking down, the safe operation of electric system will be threatened.GIS working voltage, heat, the power the effects of under interior insulation
Aging and in production, transport, debugging assembly, operation and maintenance process generates or the various latency defects that leave, can be by
Flaring exhibition causes the electrical strength of interior insulation to decline and lead to failure, thus the interior insulation state of GIS device is to GIS O&M to pass
It is important.
When SF6 air insulating device is there are when over-heat inside insulation defect, localized hyperthermia can be generated, SF is caused6Gas
It decomposes, decreasing insulating.Using the prior art cannot accurate measurements GIS device hot-spot defect in real time, and cannot have
Effect detects SF6Gas decomposition components.
Summary of the invention
The embodiment of the present invention provides a kind of GIS insulation defect monitoring device, system and detection method, with realize can be real-time
Accurate measurements GIS device hot-spot defect, and can effectively detect SF6Gas decomposition components.GIS is set to reach
The standby purpose for carrying out fault diagnosis and state evaluation.
In a first aspect, the embodiment of the invention provides a kind of GIS insulation defect monitoring device, including voltage regulator module,
Overheat sealed gas chamber, physical imperfection detection module, thermometer and mass spectrograph；
For the input terminal of the voltage regulator module for input AC electricity, the output end output of the voltage regulator module can
Adjust voltage；
The physical imperfection detection module is set in the overheat sealed gas chamber, the physical imperfection detection module and institute
State the output end electrical connection of voltage regulator module；
It is provided with thief hatch and detection mouth on the overheat sealed gas chamber wall, the mass spectrograph is detected by the thief hatch
Gas component in the overheat sealed gas chamber, the thermometer detect the temperature in the overheat sealed gas chamber by the detection mouth
Degree.
Optionally, the GIS insulation defect monitoring device further includes amplitude limiter；
The amplitude limiter is serially connected in the current supply circuit of the physical imperfection detection module.
Optionally, the GIS insulation defect monitoring device further includes temperature controller and temperature sensor；
The input terminal of the temperature controller is electrically connected by the output end of the amplitude limiter and the voltage regulator module
It connects, the output end of the temperature controller is electrically connected with the input terminal of the temperature sensor, the output of the temperature sensor
End is electrically connected with the thermometer.
Optionally, the physical imperfection detection module includes power supply line, thermocouple and heating wire；
The heating wire is electrically connected by the power supply line with the voltage regulator module, the thermocouple and the electric heating
Silk electrical connection.
Optionally, the physical imperfection detection module further includes signal lead；
The first end of the signal lead is electrically connected with the thermocouple, the second end of the signal lead and the temperature
The input terminal of sensor is electrically connected.
Optionally, the physical imperfection detection module is electrically connected with the output end of the voltage regulator module, comprising:
Power supply line three-way hole is provided on the overheat sealed gas chamber wall, the physical imperfection detection module passes through casing and institute
The output end electrical connection of voltage regulator module is stated, described sleeve pipe runs through the power supply line three-way hole.
Optionally, the voltage regulator module includes pressure regulator, first resistor, second resistance and bleeder circuit；
The input terminal of the pressure regulator is for accessing alternating voltage, the first output end of the pressure regulator and first electricity
The first end of resistance is electrically connected, and the second end of the first resistor is electrically connected with the first end of the second resistance, second electricity
The second end of resistance is electrically connected with the voltage receiving end of the first electrode；
The first end of the bleeder circuit is electrically connected with the second end of the first resistor, the second end of the bleeder circuit
It is grounded with the second output terminal of the pressure regulator.
Optionally, the bleeder circuit includes first capacitor and the second capacitor；
The first end of the first capacitor is electrically connected with the second end of the first resistor, the second end of the first capacitor
Pass through second capacity earth.
Optionally, the amplitude limiter includes first diode and the second diode；
The first diode is connected with the second diode inverse parallel.
Second aspect, the embodiment of the invention provides a kind of GIS defect inspection systems, including GIS insulation defect monitoring dress
It sets, further includes electric discharge gas chamber and sampling module；
Discharge electrode, the output end electricity of the discharge electrode and the voltage regulator module are provided in the electric discharge gas chamber
Connection；
The input terminal of the sampling module is electrically connected with the discharge electrode, the output end ground connection of the sampling module.
Optionally, the discharge electrode includes first electrode and second electrode；
The first electrode is high-field electrode, and the first electrode is electrically connected with the output end of the voltage regulator module；
The second electrode is grounding electrode；
The discharge electrode includes needle to board electrode, homocentric sphere-at least one of bowl electrode or board-to-board electrode.
Optionally, thieff hatch is provided on the electric discharge air chamber wall, the mass spectrograph passes through described in thieff hatch detection
Gas component in electric discharge gas chamber.
Optionally, the sampling module includes third capacitor and 3rd resistor；
The first end of the third capacitor is electrically connected with the voltage receiving end of the first electrode, and the of the third capacitor
Two ends are electrically connected with the first end of the 3rd resistor, the second end ground connection of the 3rd resistor；
The 3rd resistor is in parallel with oscillograph.
The third aspect, the embodiment of the invention provides a kind of GIS defect inspection methods, are executed by GIS defect inspection system,
The GIS defect inspection system includes electric discharge gas chamber, sampling module, voltage regulator module, overheat sealed gas chamber, physical imperfection inspection
Survey module, thermometer and mass spectrograph；The GIS defect inspection method includes:
The electric discharge gas chamber is extracted as vacuum environment, and injects SF to the electric discharge gas chamber6New gas is cleaned；
SF is re-injected into the electric discharge gas chamber after cleaning6New gas to the indoor air pressure of the electric discharge gas is
0.2MPa；
The voltage for being applied to the electric discharge gas chamber both ends is increased to predeterminated voltage by the voltage regulator module；
The mass spectrograph acquires the gas under different predeterminated voltages in the electric discharge gas chamber, and determines in the electric discharge gas chamber
The component and content of gas.
Optionally, the electric discharge gas chamber is extracted as vacuum environment, and injects SF to the electric discharge gas chamber6New gas carries out clear
It washes and includes:
SF is injected to the electric discharge gas chamber6After new gas is cleaned, the electric discharge gas chamber is extracted as vacuum environment again,
At least repeat 3 times.
Optionally, the GIS defect inspection method further includes that the electric discharge gas chamber is extracted vacuum environment in last time
Afterwards, the electric discharge gas chamber is stood into the first preset time.
Optionally, the voltage for being applied to the electric discharge gas chamber both ends is increased to by default electricity by the voltage regulator module
Pressure includes:
The voltage for being applied to the electric discharge gas chamber both ends is increased to by predeterminated voltage using gradually boosting method, and in default electricity
Pressure is to SF6Gas carries out the electric discharge decomposition run of the second preset time.
Optionally, the predeterminated voltage is multiple, the defect inspection method further include: under each predeterminated voltage
To SF6When gas carries out electric discharge decomposition run, at interval of 12 hours by mass spectrograph acquire it is described electric discharge gas chamber in gas, and
Determine the component and content of gas in the electric discharge gas chamber.
Technical solution provided in an embodiment of the present invention, excessively hot using physical imperfection detection module Simulated GlS equipment lack
It falls into, real-time monitoring is carried out to excessively hot defect by thermometer and mass spectrograph, and detect SF6Gas decomposition components.The present invention is real
Apply can accurate measurements GIS device hot-spot defect in real time, and can effectively detect SF6Gas decomposition components, thus
Achieve the purpose that carry out fault diagnosis and state evaluation to GIS device, the data convenient for that will acquire form diagnostic decision tree.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for GIS insulation defect monitoring device that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram for another GIS insulation defect monitoring device that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram for another GIS insulation defect monitoring device that the embodiment of the present invention one provides；
Fig. 4 is the structural schematic diagram for another GIS insulation defect monitoring device that the embodiment of the present invention one provides；
Fig. 5 is a kind of structural schematic diagram of GIS defect inspection system provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of flow chart for GIS defect inspection method that the embodiment of the present invention three provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
State that the specific embodiments are only for explaining the present invention, rather than limitation of the invention.It also should be noted that for the ease of
It describes, only the parts related to the present invention are shown rather than entire infrastructure in attached drawing.
Embodiment one
Fig. 1 is the structural schematic diagram of a kind of GIS insulation defect monitoring device that the embodiment of the present invention one provides, with reference to Fig. 1,
GIS insulation defect monitoring device provided in an embodiment of the present invention include voltage regulator module 10, overheat sealed gas chamber 20, physics lack
Fall into detection module 30, thermometer 40 and mass spectrograph 50；
For the input terminal A1 of voltage regulator module 10 for input AC electricity, the output of output terminals A 2 of voltage regulator module 10 can
Adjust voltage；
Physical imperfection detection module 30 is set in overheat sealed gas chamber 20, and physical imperfection detection module 30 and voltage are adjusted
The output terminals A 2 of module 10 is electrically connected；
Thief hatch 210 and detection mouth 220 are provided on overheat 20 wall of sealed gas chamber, mass spectrograph 50 is examined by thief hatch 210
Gas component in overheat sealed gas chamber 20 is surveyed, thermometer 40 passes through the temperature in the detection overheat sealed gas chamber 20 of detection mouth 220.
Wherein, hot-spot defect be GIS device in the process of running, it may appear that poor contact, short circuit or magnetic saturation
The defects of, if handling not in time, it will cause GIS device hot-spots to generate high temperature, at high temperature, SF6Gas is decomposed,
Insulation performance is caused to reduce, serious to will cause GIS device out of service.The embodiment of the present invention uses physical imperfection detection module
30 carry out Simulated GlS equipment hot-spot defect, and overheat sealed gas chamber 20 is that physical imperfection detection module 30 provides closed environment,
Guarantee SF6Gas was when occurring thermal decomposition not by the interference of air.
Specifically, voltage regulator module 10 alternating voltage is converted into discharge electrode needed for test voltage, voltage module
The test voltage of 10 outputs is adjustable.For example, voltage regulator module 10 can be adjustable transformer, adjusted by voltage regulator module 10
Section is applied to physical imperfection detection module 30 to change the calorific value of physical imperfection detection module 30.The detection overheat of thermometer 40 is close
It holds one's breath the real time temperature on 30 surface of room 20 and physical imperfection detection module, when the temperature on 30 surface of physical imperfection detection module reaches
When SF6 gas decomposition temperature, SF6Thermal decomposition occurred for gas, generated a variety of decomposition components, be can detecte out by mass spectrograph 50
SF6The decomposition components and content of gas.Illustratively, physical imperfection detection module 30 is GIS device physical imperfection model, is used for
GIS device localized hyperthermia caused by hot-spot failure is detected to SF6The influence of decomposition components.Illustratively, it refers to
Fig. 1, physical imperfection detection module 30 can be powered by voltage regulator module 10, and overheat sealed gas chamber 20 is built-in with physics and lacks
Detection module 30 is fallen into, overheat sealed gas chamber 20 is used to provide closed environment for SF6 decomposition, while external environment is isolated to SF6
Decomposition has an impact, as the micro- oxygen of micro- water in air can be to SF6It decomposes and the detection of decomposition components brings interference.
Optionally, Fig. 2 is the structural representation for another GIS insulation defect monitoring device that the embodiment of the present invention one provides
Figure, on the basis of the above embodiments, with reference to Fig. 2, GIS insulation defect monitoring device further includes amplitude limiter 60；Amplitude limiter
60 are serially connected in the current supply circuit of physical imperfection detection module 30.
Illustratively, physical imperfection detection module 30 is powered by voltage regulator module 10, and amplitude limiter 60 is serially connected with
In the current supply circuit of physical imperfection detection module 30, amplitude limiter 60 is used to limit the amplitude of input voltage, prevents input voltage
Mutation brings irreversible damage to physical imperfection detection module 30.Amplitude limiter 60 can also be directly electrically connected with alternating current, be used
It is directly that physical imperfection detection module 30 is powered by alternating current in the amplitude of limitation line voltage.
Optionally, with continued reference to Fig. 2, GIS insulation defect monitoring device further includes temperature controller 70 and temperature sensor
80；
The input terminal of temperature controller 70 is electrically connected by amplitude limiter 60 with the output terminals A 2 of voltage regulator module 10, temperature
The output end of degree controller 70 is electrically connected with the input terminal of temperature sensor 80, the output end and thermometer 40 of temperature sensor 80
Electrical connection.
Specifically, temperature controller 70 is used to be monitored and controlled the real time temperature of physical imperfection detection module 30, for example, warm
Degree controller 70 can be made of PID control circuit and display screen, and PID control circuit combination voltage regulator module 10 controls object
The temperature on 30 surface of defects detection module is managed, and monitors the real time temperature on 30 surface of physical imperfection detection module by display screen.
Temperature sensor 80 is set on physical imperfection detection module 30, is connected or is electrically connected with physical imperfection detection module 30,
For directly detecting the temperature of physics defects detection module 30.The output end of temperature sensor 80 is connect with thermometer 40, temperature
The temperature signal of 40 temperature collection sensors 80 output is counted, and collected temperature is shown.For example, temperature sensor 80
The real time temperature on 30 surface of physical imperfection detection module is acquired, and available signal output is generated according to collected temperature signal,
Available signal can be temperature signal, voltage signal, current signal or the pressure signal etc. after conversion, and 40, thermometer
30 surface temperature of physical imperfection detection module is shown according to the available signal received and overheats the temperature in sealed gas chamber 20.
Thief hatch 210 and detection mouth 220, thief hatch 210 and 50 pipeline of mass spectrograph are provided on overheat 20 wall of sealed gas chamber
Connection, convenient for SF in the acquisition overheat sealed gas chamber 20 of mass spectrograph 506Gas decomposition components, detection mouth 220 are connect with thermometer 40.
Mass spectrograph 50 be gas chromatography mass spectrometer, for detect in GIS device when hot-spot occurs SF6The component that gas decomposes,
Thermometer 40 occurs when hot-spot for detecting in 30 surface temperature of physical imperfection detection module and overheat sealed gas chamber 20
Temperature, adjusts temperature by temperature controller 70, acquires SF under different temperatures to realize6Gas decomposition components and temperature pair
SF6The data such as the influence that gas decomposes, the data convenient for that will acquire form diagnostic decision tree, realize that the insulation to GIS device lacks
It is trapped into row diagnostic assessment.
Optionally, Fig. 3 is the structural representation for another GIS insulation defect monitoring device that the embodiment of the present invention one provides
Figure, on the basis of the above embodiments, with reference to Fig. 3, physical imperfection detection module 30 includes power supply line 304, thermocouple 302 and electricity
Heated filament 303；
Heating wire 303 is electrically connected by power supply line 304 with voltage regulator module 10, and thermocouple 302 and heating wire electricity 303 connect
It connects.
Specifically, iron core 301 can be used as the shell of physical imperfection detection module 30, and Simulated GlS equipment overheats
Material when failure at failure, for example, the shell of physical imperfection detection module 30 is iron core 301, inside filling magnesia is with reality
Existing good thermal conductivity, the shell both ends of physical imperfection detection module 30 can be packaged with ceramics, to guarantee physical imperfection
The leakproofness of detection module 30.Heating wire 302 is electrically connected with voltage regulator module 10, according to 10 output voltage of voltage regulator module
Size can produce heat corresponding with output voltage, utilize heating wire 302 generate heat realize SF6Point of gas
Solution detects SF by mass spectrograph 506The decomposition components of gas.Thermocouple 303 can be K-type thermocouple, for measuring heating wire
302 temperature, thermocouple 303 can be made of temperature-sensing element, and the temperature to heating wire 302 is realized using the pyroelectric effect of thermocouple
Degree measures.
Optionally, with continued reference to Fig. 3, it further includes signal lead 305 that physical imperfection, which detects mould 30,；
The first end of signal lead 305 is electrically connected with thermocouple 303, the second end and temperature sensor of signal lead 305
80 input terminal electrical connection.
Specifically, signal lead 305 is used to the temperature for the heating wire 302 that thermocouple 303 measures passing through temperature sensing
The output of device 80 is carried out the display of 302 temperature of heating wire by thermometer 40, the temperature of heating wire 302 is physics to thermometer 40
30 surface temperature of defects detection mould.
Optionally, it with continued reference to Fig. 3, overheats and is provided with power supply line three-way hole 230 on 20 wall of sealed gas chamber, physical imperfection detection
Module 30 is electrically connected by casing with the output terminals A 2 of voltage regulator module 10, and casing runs through power supply line three-way hole 230.Casing can be with
The abrasion that protection power source line generates in power supply line three-way hole guarantees the reliability of current supply circuit.
Optionally, Fig. 4 is the structural representation for another GIS insulation defect monitoring device that the embodiment of the present invention one provides
Figure, on the basis of the above embodiments, with reference to Fig. 4, voltage regulator module 10 includes pressure regulator T1, first resistor R1, the second electricity
Hinder R2 and bleeder circuit 110；
The input terminal of pressure regulator T1 is for accessing alternating voltage, and the of the first output end of pressure regulator T1 and first resistor R1
One end electrical connection, the second end of first resistor R1 is electrically connected with the first end of second resistance R2, the second end of second resistance R2 and
The voltage receiving end of first electrode 220 is electrically connected；
The first end of bleeder circuit 110 is electrically connected with the second end of first resistor R1, the second end and tune of bleeder circuit 110
The second output terminal of depressor T1 is grounded.
Specifically, the adjustable input ac voltage of pressure regulator T1, first resistor R1 is protective resistance, for limiting GIS
Breakdown is occurring for equipment or when flashover and overcurrent that input ac voltage is generated to the charging of bleeder circuit 110 is to GIS device
It damages, second resistance R2 is protective resistance, when GIS device punctures, for protecting temperature controller 70.
Optionally, with continued reference to Fig. 4, amplitude limiter 60 includes first diode D1 and the second diode D2；
First diode D1 and the second diode D2 inverse parallel connection.
Wherein, first diode D1 and the second diode D2 reverse parallel connection, collectively constitute amplitude limiter circuit, are used for limit temperature
The input voltage of controller 70.
Optionally, bleeder circuit 110 includes first capacitor C1 and the second capacitor C2.The first end of first capacitor C1 and first
The second end of resistance R1 is electrically connected, and the second end of first capacitor C1 is grounded by the second capacitor C2.
Specifically, first capacitor C1 and the second capacitor C2 forms bleeder circuit, the alternating voltage that pressure regulator T1 is exported turns
It is changed to low-voltage AC, first capacitor C1 and the second capacitor C2 and does not consume energy during carrying out voltage conversion, therefore
In ac signal circuit, divided using capacitor.
Technical solution provided in an embodiment of the present invention, by using the overheat of physical imperfection detection module Simulated GlS equipment
Property defect, real-time monitoring is carried out to excessively hot defect by thermometer and mass spectrograph, and detect SF6Gas decomposition components.This hair
Bright implementation can accurate measurements GIS device hot-spot defect in real time, and can effectively detect SF6Gas decomposition components,
To achieve the purpose that carry out fault diagnosis and state evaluation to GIS device, the data convenient for that will acquire form diagnostic decision tree.
Embodiment two
Fig. 5 is a kind of structural schematic diagram of GIS defect inspection system provided by Embodiment 2 of the present invention, in above-described embodiment
On the basis of, with reference to Fig. 5, GIS defect inspection system includes the GIS insulation defect monitoring device that embodiment one provides, and further includes
Discharge gas chamber 90 and sampling module 100；
It is provided with discharge electrode in electric discharge gas chamber 90, discharge electrode is electrically connected with the output terminals A 2 of voltage regulator module 10；
The input terminal of sampling module 100 is electrically connected with discharge electrode, the output end ground connection of sampling module 100.
Specifically, shelf depreciation is only to discharge in GIS device regional area, alive conductor is applied without running through
Between electric discharge phenomena, shelf depreciation is a kind of common defect of GIS device.Shelf depreciation makes the SF in GIS device6Gas hair
Solution estranged, the embodiment of the present invention use discharge electrode Simulated GlS apparatus local discharge.Voltage regulator module 10 turns alternating voltage
Test voltage needed for being changed to discharge electrode, the test voltage that voltage module 10 exports is adjustable.For example, voltage regulator module 10 can
To be adjustable transformer, the test voltage being applied on discharge electrode is adjusted to change discharge electrode by voltage regulator module 10
Strength of discharge, the corresponding discharge capacity of each strength of discharge passes through sampling module 100 and acquires the voltage pulse that discharge electrode generates
Signal, oscillograph receive voltage pulse signal, realize the real-time monitoring to discharge capacity in electric discharge gas chamber 90, can by mass spectrograph 50
To detect SF6Gas decomposition components, to obtain SF under different tests voltage6Gas decomposition components, thus realize to GIS device into
Row fault diagnosis and state evaluation, wherein mass spectrograph 50 can be gas chromatography mass spectrometer.
Optionally, sampling module 100 includes third capacitor C3 and 3rd resistor R3；
The first end of third capacitor C3 is electrically connected with the voltage receiving end of first electrode, the second end of third capacitor C3 and the
The first end of three resistance R3 is electrically connected, the second end ground connection of 3rd resistor R3；Oscillograph is in parallel with 3rd resistor R3.
Specifically, third capacitor C3 is coupled capacitor, the shelf depreciation generated for discharge electrode in the gas chamber 90 that will discharge
Pulse current is coupled on 3rd resistor R3, and 3rd resistor R3 is noninductive detection resistance, can be by arteries and veins by noninductive detection resistance
It rushes current signal and is converted into corresponding pulse voltage signal, oscillograph 200 receives pulse voltage signal, to realize to discharge electrode
The real-time monitoring of shelf depreciation, and partial discharge quantity is demarcated.Shelf depreciation can make the SF in GIS device6Gas hair
Solution estranged causes the insulation performance of GIS device to reduce.Different application voltage, electric discharge electricity are adjusted by voltage regulator module 10
Pole causes partial discharge quantity different, to pass through mass spectrum according to the different non-uniform electric field intensity differences for applying voltage and generating
Instrument 50 can detecte out SF in electric discharge gas chamber 906Decomposition components.By integrating SF under different application voltages6The number of decomposition components
According to can be realized and carry out diagnostic assessment to the insulation defect of GIS device.
Optionally, with continued reference to Fig. 5, it is provided with thieff hatch 910 on 90 wall of gas chamber that discharges, mass spectrograph 50 passes through thieff hatch
Gas component in 910 detection electric discharge gas chambers 90.
With continued reference to Fig. 5, discharge electrode includes first electrode 920 and second electrode 930.
First electrode 920 is high-field electrode, and first electrode 920 is electrically connected with the output terminals A 2 of voltage regulator module 10；The
Two electrodes 930 are grounding electrode.Discharge electrode includes at least one in needle to board electrode, homocentric sphere-bowl electrode or board-to-board electrode
Kind.
Specifically, first electrode 920 is high-voltage discharging electrode, for generating electric field, first electrode 920 can be according to voltage
The voltage that adjustment module 10 exports generates the electric field of varying strength, to obtain SF under different partial discharge intensities6Decomposition components；
Second electrode 930 is grounding electrode, for constituting discharge loop with first electrode 920.
Illustratively, first electrode 920 can be pin electrode, and second electrode 930 can be plate electrode, and needle to board electrode can
To be used to the metallic projections insulation defect of Simulated GlS equipment.Wherein, metallic projections insulation defect refers to existing on electrode
And the abnormal protruding metal object that internal field can be made to be distorted, metallic projections defect are often as processing technology, assembly
Damage, maintenance are left and are run the reasons such as friction and cause.Since the radius of curvature of protrusion end is small, lead to electric field distortion, shape
At local strong electric field region, make SF6Gas decomposes, and causes the reduction of GIS device dielectric strength, constitutes to equipment operational safety serious
It threatens.For example, the electrode point angle of first electrode 920 is 30 °, radius of curvature 0.3mm, aluminum or copper is can be selected in first electrode
Material, for the protruding point on simulated high-pressure conductor；The materials such as aluminum, copper or stainless steel can be selected in second electrode 930
Plate electrode, the metal cavity shell for Simulated GlS equipment.
Illustratively, first electrode 920 can be homocentric sphere electrode, and second electrode 930 can be bowl electrode, homocentric sphere-
Bowl electrode be used to Simulated GlS equipment free conducting particle defect, free conducting particle refer between the electrodes exist can be in electricity
The metal particle or clast freely beated under field action.For example, first electrode 920 can be using the homocentric sphere electricity of stainless steel material
Pole, second electrode 930 can be using the bowl electrodes as made of the cutting of stainless steel hollow ball；Copper or aluminum particle can be used
Simulate free conducting particle.Bowl electrode can prevent particle from jumping out electrode and changing with the beating scope of restraint of liberty electrically conductive particles
Discharge condition enables shelf depreciation continually and steadily to carry out.
Illustratively, first electrode 920 can be plate electrode, second electrode 930 or plate electrode, for simulating
GIS device pollution severity of insulators defect, pollution severity of insulators defect refers in the dirty of solid insulation surface attachment, can inhale
Attached a certain number of metal particles, these metal particles can constantly be assembled under the action of electric field force, if gathering certain journey
Degree meeting Severe distortion solid insulator surface field, to excite shelf depreciation.It is produced in electric discharge gas chamber 90 using board-to-board electrode
Raw non-uniform electric field, solid insulator can be cylindrical ring oxygen resin, and solid insulator is connect with board-to-board electrode, for branch
Fagging-plate electrode.
Technical solution provided in an embodiment of the present invention provides voltage by voltage regulator module for electric discharge gas chamber, by adopting
Egf block and mass spectrograph acquire and determine SF in electric discharge gas chamber6Gas decomposition product can accurately identify GIS device internal flaw
Type and defect severity can be monitored by using physical imperfection detection module, temperature controller and temperature sensor
Influence of the hot-spot to GIS device insulation performance, and detection different temperatures is to SF6The influence of gas decomposition components.This hair
Bright embodiment can monitor the shelf depreciation insulation defect and hot-spot insulation defect of GIS device simultaneously, realize a variety of GIS
The detection of defect, the data convenient for that will acquire form diagnostic decision tree, realize that carrying out diagnosis to the insulation defect of GIS device comments
Estimate.
Embodiment three
Fig. 6 is a kind of flow chart for GIS defect inspection method that the embodiment of the present invention three provides, in the base of above-described embodiment
On plinth, with reference to Fig. 5 and Fig. 6, GIS defect inspection method is executed by GIS defect inspection system, the GIS defect inspection system packet
Include electric discharge gas chamber, sampling module, voltage regulator module, overheat sealed gas chamber, physical imperfection detection module, thermometer and mass spectrum
Instrument；
The GIS defect inspection method includes:
Electric discharge gas chamber is extracted as vacuum environment by step 601, and to the gas chamber injection SF that discharges6New gas is cleaned.
Specifically, electric discharge gas chamber is closed vacuum environment, prevent foreign gas to SF6Gas discharge decomposition generates shadow
It rings, such as the gas chamber that can will be discharged by vacuum pump extracts as vacuum environment.Electric discharge gas chamber is extracted to pass through after vacuum environment
Air inlet on electric discharge air chamber wall injects SF into electric discharge gas chamber6New gas, to be cleaned to electric discharge gas chamber.SF6New gas is using pure
The SF that degree is 99.995%6Gas, for example, extracting electric discharge gas chamber for vacuum ring after placing discharge electrode in electric discharge gas chamber
Border, to vacuum environment under electric discharge gas chamber injection purity be 99.995% SF6Gas, with the impurity gas in discharge cleaning gas chamber
Body prevents foreign gas to SF6Gas discharge decomposition has an impact.
Step 602 re-injects SF into the electric discharge gas chamber after cleaning6New gas to the electric discharge indoor air pressure of gas is
0.2MPa。
Specifically, the SF for being 99.995% by using purity6Gas cleans the electric discharge gas chamber under vacuum environment
Afterwards, the SF that injection purity is 99.995% into electric discharge gas chamber again6Gas, so that the air pressure in electric discharge gas chamber is 0.2MPa.
The discharge capacity and discharge severity for the indoor effects of air pressure shelf depreciation of gas of discharging, when increasing air pressure in electric discharge gas chamber, SF6
Hypotelorism between gas molecule reduces the mean free path of electronics, so that electronics accumulates during secondary collision
Tired kinetic energy is reduced, to reduce free, and increases the SF with strong electronegativity6Molecular Adsorption electronics and hinder to put
Electricity development, so that SF6Gas is not easily decomposed, to influence discharge capacity and SF6Data acquisition between gas decomposition.Therefore it needs to protect
During confirmatory test, electric discharge gas room pressure maintains 0.2MPa.
The voltage for being applied to electric discharge gas chamber both ends is increased to predeterminated voltage by step 603, voltage regulator module.
Specifically, voltage regulator module have the function of adjust voltage, the alternating voltage of input can be carried out boosting or
Decompression.Electric discharge gas chamber is built-in with discharge electrode, and the alternating voltage of input is boosted to predeterminated voltage by voltage regulator module, and will be pre-
If voltage is applied on the discharge electrode of electric discharge gas chamber, wherein predeterminated voltage can be SF6Gas occurs needed for electric discharge is decomposed
Applied voltage.Illustratively, the electricity at electric discharge gas chamber both ends can will be applied to using gradually boosting method by voltage regulator module
Pressure is increased to predeterminated voltage, and discharge electrode generates partial discharge phenomenon under the action of predeterminated voltage, causes discharge electrode local
Generate non-uniform electric field, under the influence of non-uniform electric field, SF6Gas is decomposed.Discharge electrode includes needle to board electrode, same
Bulbus cordis-at least one of bowl electrode or board-to-board electrode.
Step 604, mass spectrograph acquire the gas in different predeterminated voltage decentralization electric panel rooms, and determine gas in electric discharge gas chamber
Component and content.
Specifically, mass spectrograph can be gas chromatography-mass spectrometry, SF in electric discharge gas chamber is acquired by mass spectrograph6Gas
Decomposition components, and determine SF6The content of each component in gas decomposition components.Multiple groups difference can be set by voltage regulator module
Predeterminated voltage, carry out partial discharge test respectively under each predeterminated voltage, and acquire SF6Gas decomposition components.For example, working as
When predeterminated voltage is 30kV, SF is determined by mass spectrograph6Gas decomposition components include SO2、SOF2And SO2F2；When predeterminated voltage is
When 70kV, SF6Gas decomposition components include SOF2、SO2F2、H2S、CO、SO2And CS2.Illustratively, UV absorption can be passed through
Spectral detection SO2And CS2And content, SOF is detected by infrared absorption spectrum2、SO2F2And H2S, CO and content, for example, if passing through
Mass spectrograph detects that SF6 gas decomposition components include SO in electric discharge gas chamber2, then can determine that part, which has occurred, in electric discharge gas chamber puts
Electricity, and SO2Content is higher, and shelf depreciation is more serious；If detecting SF in electric discharge gas chamber by mass spectrograph6Gas decomposition components packet
Containing H2S and CS2, then can pass through H2The content of S determines discharge capacity, passes through CS2Content determine insulation whether be damaged；Wherein, H2S
Content it is higher, discharge capacity is bigger；CS2Content it is higher, insulation is impaired more serious.
Technical solution provided in an embodiment of the present invention provides different default electricity by voltage regulator module for electric discharge gas chamber
Pressure is acquired by mass spectrograph and determines SF in electric discharge gas chamber6Gas decomposition components can accurately identify GIS device internal flaw
Type, the data convenient for that will acquire form diagnostic decision tree.
Optionally, electric discharge gas chamber is extracted as vacuum environment, and to the gas chamber injection SF that discharges6New gas carries out cleaning
SF is injected to electric discharge gas chamber6After new gas is cleaned, the gas chamber that will discharge again is extracted as vacuum environment, is at least repeated
It carries out 3 times.
It wherein, is that the SF that purity is 99.995% is injected in the electric discharge gas chamber of vacuum environment to extracting6Gas is cleaned,
Can not wash completely electric discharge the indoor foreign gas of gas, therefore to electric discharge gas chamber injection the new gas of SF6 cleaned after, again
Electric discharge gas chamber is extracted as vacuum environment, and injects purity for 99.995% SF6Gas is cleaned, and secondary process at least repeats
It carries out 3 times, to guarantee the stability of electric discharge gas indoor environment.
Optionally, which further includes that will put after last time will discharge gas chamber extraction vacuum environment
Electric panel room stands the first preset time.
Wherein, the first preset time can be that foreign gas content in electric discharge gas chamber is made to be preferably minimized required time, example
Such as, electric discharge gas chamber is extracted as vacuum environment, and to the gas chamber injection SF that discharges6New gas is cleaned, and is terminated in the 3rd cleaning
Afterwards, electric discharge gas chamber is extracted as vacuum environment, and electric discharge gas chamber is stood 24 hours, drop foreign gas content in electric discharge gas chamber
To minimum, to reduce foreign gas to SF6The influence that electric discharge is decomposed.
Optionally, the voltage for being applied to electric discharge gas chamber both ends is increased to predeterminated voltage by voltage regulator module includes:
The voltage for being applied to electric discharge gas chamber both ends is increased to by predeterminated voltage using gradually boosting method, and under predeterminated voltage
To SF6Gas carries out the electric discharge decomposition run of the second preset time.
Specifically, gradually input ac voltage is stepped up to predeterminated voltage by boosting method by voltage regulator module, it is real
The continuity for having showed voltage adjusting reduces the blindness of voltage class selection, reduces the dispersibility of test data, and being convenient for will
The test data of acquisition forms diagnostic decision tree.Second preset time is the SF under predeterminated voltage6Gas carries out electric discharge decomposition
Time, for example, the second preset time can be 96 hours.
Optionally, on the basis of the above embodiments, predeterminated voltage is multiple, GIS defect inspection method further include: every
To SF under one predeterminated voltage6When gas carries out electric discharge decomposition run, acquired in electric discharge gas chamber at interval of 12 hours by mass spectrograph
Gas, and determine electric discharge gas chamber in gas component and content.
Specifically, different discharge electrodes has different firing potentials, for example, not placing the electric discharge gas of discharge electrode
The intrinsic firing potential of room is 45kV, and the firing potential of needle to board electrode is 16kV, then can be with 16kV voltage
16kV is boosted to 45kV using gradually boosting method, 96 hours SF is carried out under each predeterminated voltage by beginning voltage6Gas discharge
It decomposes, every 12 hours by the gas in mass spectrograph acquisition electric discharge gas chamber, and determines the component of gas in electric discharge gas chamber and contain
Amount, to determine discharge capacity to SF6The influence of gas decomposition components, while using oscillograph to the discharge capacity under each predeterminated voltage
It is detected, mass spectrograph and the collected test data of oscillograph is integrated, determined convenient for the data of acquisition are formed diagnosis
Plan tree.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (15)
1. a kind of GIS insulation defect monitoring device, which is characterized in that lacked including voltage regulator module, overheat sealed gas chamber, physics
Fall into detection module, thermometer and mass spectrograph；
The input terminal of the voltage regulator module exports adjustable electric for input AC electricity, the output end of the voltage regulator module
Pressure；
The physical imperfection detection module is set in the overheat sealed gas chamber, the physical imperfection detection module and the electricity
Press the output end electrical connection of adjustment module；
Thief hatch and detection mouth are provided on the overheat sealed gas chamber wall, the mass spectrograph passes through described in thief hatch detection
Gas component in sealed gas chamber is overheated, the thermometer detects the temperature in the overheat sealed gas chamber by the detection mouth.
2. GIS insulation defect monitoring device according to claim 1, which is characterized in that further include amplitude limiter；
The amplitude limiter is serially connected in the current supply circuit of the physical imperfection detection module.
3. GIS insulation defect monitoring device according to claim 2, which is characterized in that further include temperature controller and temperature
Spend sensor；
The input terminal of the temperature controller is electrically connected by the amplitude limiter with the output end of the voltage regulator module, institute
The output end for stating temperature controller is electrically connected with the input terminal of the temperature sensor, the output end of the temperature sensor and institute
State thermometer electrical connection.
4. GIS insulation defect monitoring device according to claim 3, which is characterized in that the physical imperfection detection module
Including power supply line, thermocouple and heating wire；
The heating wire is electrically connected by the power supply line with the voltage regulator module, the thermocouple and heating wire electricity
Connection.
5. GIS insulation defect monitoring device according to claim 4, which is characterized in that the physical imperfection detection module
It further include signal lead；
The first end of the signal lead is electrically connected with the thermocouple, the second end of the signal lead and the temperature sensing
The input terminal of device is electrically connected.
6. GIS insulation defect monitoring device according to claim 1, which is characterized in that the physical imperfection detection module
It is electrically connected with the output end of the voltage regulator module, comprising:
Power supply line three-way hole is provided on the overheat sealed gas chamber wall, the physical imperfection detection module passes through casing and the electricity
The output end electrical connection of adjustment module is pressed, described sleeve pipe runs through the power supply line three-way hole.
7. GIS insulation defect monitoring device according to claim 1, which is characterized in that the voltage regulator module includes
Pressure regulator, first resistor, second resistance and bleeder circuit；
The input terminal of the pressure regulator is for accessing alternating voltage, the first output end and the first resistor of the pressure regulator
First end electrical connection, the second end of the first resistor are electrically connected with the first end of the second resistance, the second resistance
Second end is electrically connected with the voltage receiving end of the first electrode；
The first end of the bleeder circuit is electrically connected with the second end of the first resistor, the second end of the bleeder circuit and institute
State the second output terminal ground connection of pressure regulator.
8. GIS insulation defect monitoring device according to claim 2, which is characterized in that the amplitude limiter includes first
Diode and the second diode；
The first diode is connected with the second diode inverse parallel.
9. a kind of GIS defect inspection system, which is characterized in that including the described in any item GIS insulation defect prisons of claim 1-8
Device is surveyed, further includes electric discharge gas chamber and sampling module；
Discharge electrode is provided in the electric discharge gas chamber, the output end of the discharge electrode and the voltage regulator module is electrically connected
It connects；
The input terminal of the sampling module is electrically connected with the discharge electrode, the output end ground connection of the sampling module.
10. GIS defect inspection system according to claim 9, which is characterized in that the discharge electrode includes first electrode
And second electrode；
The first electrode is high-field electrode, and the first electrode is electrically connected with the output end of the voltage regulator module；It is described
Second electrode is grounding electrode；
The discharge electrode includes needle to board electrode, homocentric sphere-at least one of bowl electrode or board-to-board electrode.
11. a kind of GIS defect inspection method, which is characterized in that executed by GIS defect inspection system, GIS defect inspection system
System includes electric discharge gas chamber, sampling module, voltage regulator module, overheat sealed gas chamber, physical imperfection detection module, thermometer and matter
Spectrometer；
The GIS defect inspection method includes:
The electric discharge gas chamber is extracted as vacuum environment, and injects SF to the electric discharge gas chamber6New gas is cleaned；
SF is re-injected into the electric discharge gas chamber after cleaning6New gas to the indoor air pressure of the electric discharge gas is 0.2MPa；
The voltage for being applied to the electric discharge gas chamber both ends is increased to predeterminated voltage by the voltage regulator module；
The mass spectrograph acquires the gas under different predeterminated voltages in the electric discharge gas chamber, and determines gas in the electric discharge gas chamber
Component and content.
12. GIS defect inspection method according to claim 11, which is characterized in that it is true for extracting the electric discharge gas chamber
Altitude, and SF is injected to the electric discharge gas chamber6New gas carries out cleaning
SF is injected to the electric discharge gas chamber6After new gas is cleaned, the electric discharge gas chamber is extracted as vacuum environment again, at least
Repeat 3 times.
13. GIS defect inspection method according to claim 12, which is characterized in that further including will be described in last time
After the gas chamber that discharges extracts vacuum environment, the electric discharge gas chamber is stood into the first preset time.
14. GIS defect inspection method according to claim 11, which is characterized in that will by the voltage regulator module
The voltage for being applied to the electric discharge gas chamber both ends is increased to predeterminated voltage and includes:
The voltage for being applied to the electric discharge gas chamber both ends is increased to by predeterminated voltage using gradually boosting method, and under predeterminated voltage
To SF6Gas carries out the electric discharge decomposition run of the second preset time.
15. GIS defect inspection method according to claim 14, which is characterized in that
The predeterminated voltage is multiple, the defect inspection method further include: to SF under each predeterminated voltage6Gas into
Row electric discharge decomposition run when, at interval of 12 hours by mass spectrograph acquire it is described electric discharge gas chamber in gas, and determination described in put
The component and content of gas in electric panel room.
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| US11329210B2 (en) * | 2018-03-28 | 2022-05-10 | Nihon Dempa Kogyo Co., Ltd. | Sensing device |
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