阅读说明：本技术 Gis绝缘劣化检测装置、方法及gis绝缘劣化诊断系统 (GIS insulation-degradation detecting device, method and GIS insulation degradation diagnostic system ) 是由 高山 杨景刚 刘咏飞 戴锋 陈轩 陈昊 陈韬 邵新苍 秦延山 马勇 赵科 陶加 于 2019-09-29 设计创作，主要内容包括：本发明实施例公开了一种GIS绝缘劣化检测装置、方法及GIS绝缘劣化诊断系统,该GIS绝缘劣化检测装置包括电压调节模块、放电气室、采样模块、示波器和质谱仪；电压调节模块的输入端用于输入交流电,电压调节模块的输出端输出可调电压；放电气室内设置有放电电极,放电电极与电压调节模块的输出端电连接；采样模块的输入端与放电电极电连接,采样模块的输出端接地；示波器与采样模块电连接,示波器用于监测放电气室的放电量；放电气室壁上设置有采样孔,质谱仪通过采样孔检测放电气室中气体组分。本发明实施例能够准确识别GIS设备内部缺陷类型以及绝缘劣化的严重程度,便于将采集的数据形成诊断决策树。(The embodiment of the invention discloses a kind of GIS insulation-degradation detecting device, method and GIS insulation degradation diagnostic system, which includes voltage regulator module, electric discharge gas chamber, sampling module, oscillograph and mass spectrograph；The input terminal of voltage regulator module exports adjustable voltage for input AC electricity, the output end of voltage regulator module；It is provided with discharge electrode in electric discharge gas chamber, discharge electrode is electrically connected with the output end of voltage regulator module；The input terminal of sampling module is electrically connected with discharge electrode, the output end ground connection of sampling module；Oscillograph is electrically connected with sampling module, and oscillograph is used to monitor the discharge capacity of electric discharge gas chamber；Thieff hatch is provided on electric discharge air chamber wall, mass spectrograph detects gas component in electric discharge gas chamber by thieff hatch.The embodiment of the present invention can accurately identify the severity of GIS device internal flaw type and insulation degradation, and the data convenient for that will acquire form diagnostic decision tree.)

1. a kind of GIS insulation-degradation detecting device characterized by comprising voltage regulator module, electric discharge gas chamber, sampling module, Oscillograph 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；

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；

The oscillograph is electrically connected with the sampling module, and the oscillograph is used to monitor the discharge capacity of the electric discharge gas chamber；

Thieff hatch is provided on the electric discharge air chamber wall, the mass spectrograph detects gas in the electric discharge gas chamber by the thieff hatch Body component.

2. GIS insulation-degradation detecting device according to claim 1, 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.

3. GIS insulation-degradation detecting device according to claim 2, which is characterized in that the discharge electrode includes needle-plate Electrode, homocentric sphere-at least one of bowl electrode or board-to-board electrode.

4. GIS insulation-degradation detecting device according to claim 3, 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.

5. GIS insulation-degradation detecting device according to claim 4, which is characterized in that 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, and the second end of the first capacitor passes through Second capacity earth.

6. GIS insulation-degradation detecting device according to claim 4, which is characterized in that 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, the second end of the third capacitor It is electrically connected with the first end of the 3rd resistor, the second end ground connection of the 3rd resistor；

The oscillograph is in parallel with the 3rd resistor.

7. a kind of GIS insulation degradation diagnostic system, which is characterized in that insulate including GIS described in any one of claims 1-6 bad Change detection device, further includes physical imperfection detection module, temperature controller and temperature sensor, amplitude limiter is serially connected with the object In the current supply circuit for managing defects detection module；

The input terminal of the temperature controller is electrically connected with the amplitude limiter, the output end of the temperature controller and the temperature Sensor electrical connection is spent, the temperature sensor is set on the physical imperfection detection module.

8. GIS insulation degradation diagnostic system according to claim 7, which is characterized in that further include overheat sealed gas chamber；

The physical imperfection detection module is set in the overheat sealed gas chamber, the physical imperfection detection module and the electricity Press adjustment module electrical connection.

9. a kind of GIS insulation degradation detection method, which is characterized in that executed by GIS insulation degradation diagnostic system, the GIS is exhausted Edge deterioration diagnostic system includes: voltage regulator module, electric discharge gas chamber, sampling module, oscillograph and mass spectrograph；

GIS insulation degradation detection 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.

10. GIS insulation degradation detection method according to claim 9, which is characterized in that be by electric discharge gas chamber extraction Vacuum environment, 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.

11. GIS insulation degradation detection method according to claim 10, which is characterized in that further including will in last time After the electric discharge gas chamber extracts vacuum environment, the electric discharge gas chamber is stood into the first preset time.

12. GIS insulation degradation detection method according to claim 11, which is characterized in that adjust mould by the voltage The voltage for being applied to the electric discharge gas chamber both ends is increased to predeterminated voltage by block

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.

13. GIS insulation degradation detection method according to claim 12, which is characterized in that

The predeterminated voltage is multiple, the GIS insulation degradation detection method further include: to SF under each predeterminated voltage₆ When 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 field

The present embodiments relate to GIS defects detection field more particularly to GIS insulation-degradation detecting devices, method and GIS Insulation degradation diagnostic system.

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.

Work as SF₆Air insulating device can accompany by the shelf depreciation of different form and intensity there are when built-in electrical insulation defect, existing There is technology to utilize SF₆The correlation properties of decomposition components come characterize GIS different insulative deterioration degree.

But the prior art cannot accurately identify the severity of GIS device internal flaw type and insulation degradation, lack It is low to fall into effective discrimination.

Summary of the invention

The embodiment of the present invention provides a kind of GIS insulation-degradation detecting device, method and GIS insulation degradation diagnostic system, with It realizes the more defects detections of GIS, improves the effective discrimination of defect, the insulation defect occurred in GIS device is monitored, to reach To the purpose for carrying out fault diagnosis and state evaluation to GIS device.

In a first aspect, the embodiment of the invention provides a kind of GIS insulation-degradation detecting devices, comprising: voltage regulator module, Discharge gas chamber, sampling module, oscillograph 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；

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；

The oscillograph is electrically connected with the sampling module, and the oscillograph is used to monitor the electric discharge of the electric discharge gas chamber Amount；

Thieff hatch is provided on the electric discharge air chamber wall, the mass spectrograph detects the electric discharge gas chamber by the thieff hatch Middle gas component.

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.

Optionally, the discharge electrode includes at least one in needle to board electrode, homocentric sphere-bowl electrode or board-to-board electrode Kind.

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 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 oscillograph is in parallel with the 3rd resistor.

Second aspect, the embodiment of the invention provides a kind of GIS insulation degradation diagnostic systems, including GIS insulation degradation to examine Device is surveyed, further includes physical imperfection detection module, temperature controller and temperature sensor, amplitude limiter is serially connected with the physics and lacks It falls into the current supply circuit of detection module；

The input terminal of the temperature controller is electrically connected with the amplitude limiter, the output end of the temperature controller and institute Temperature sensor electrical connection is stated, the temperature sensor is set on the physical imperfection detection module.

Optionally, which further includes overheat sealed gas chamber, thermometer and mass spectrograph；

The physical imperfection detection module is set in the overheat sealed gas chamber, the physical imperfection detection module and institute State voltage regulator module electrical connection；

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 acquire the temperature in the overheat sealed gas chamber by the detection mouth Degree.

Optionally, which further includes amplitude limiter, temperature controller and temperature sensor；

The amplitude limiter is serially connected in the current supply circuit of the physical imperfection detection module；

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, iron core, thermocouple and heating wire；

The material when iron core is for Simulated GlS equipment generation overheating fault at failure, the heating wire passes through described Power supply line is electrically connected with the voltage regulator module, and the thermocouple is electrically connected with the heating wire, and the thermocouple is for surveying Measure the temperature of the heating wire.

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, it is provided with power supply line three-way hole on the overheat sealed gas chamber wall, the physical imperfection detection module passes through Casing is electrically connected with the output end of the voltage regulator module, and described sleeve pipe runs through the power supply line three-way hole.

Optionally, the amplitude limiter includes first diode and the second diode；

The first diode is connected with the second diode inverse parallel.

The third aspect, the embodiment of the invention provides a kind of GIS insulation degradation detection methods, are diagnosed by GIS insulation degradation System executes, and the GIS insulation degradation diagnostic system includes voltage regulator module, electric discharge gas chamber, sampling module, oscillograph and matter Spectrometer；GIS insulation degradation detection method includes:

The electric discharge gas chamber is extracted as vacuum environment, and injects SF to the electric discharge gas chamber₆New gas is cleaned；

The new gas of SF6 to the indoor air pressure of the electric discharge gas is re-injected into the electric discharge gas chamber after cleaning 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 insulation degradation detection method further includes that the electric discharge gas chamber is extracted vacuum in last time After environment, 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 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 built-in electrical insulation The severity of defect type and insulation degradation, the data convenient for that will acquire form diagnostic decision tree.

Detailed description of the invention

Fig. 1 is a kind of GIS insulation-degradation detecting device structural schematic diagram that the embodiment of the present invention one provides；

Fig. 2 is another GIS insulation-degradation detecting device structural schematic diagram that the embodiment of the present invention one provides；

Fig. 3 is a kind of structural schematic diagram of GIS insulation degradation diagnostic system provided by Embodiment 2 of the present invention；

Fig. 4 is the structural schematic diagram of another kind GIS insulation degradation diagnostic system provided by Embodiment 2 of the present invention；

Fig. 5 is a kind of flow chart for GIS insulation degradation detection 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 The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.