CN108710072A - SF6 gas breakdown characteristic test systems under electric appliance real impact voltage waveform - Google Patents
SF6 gas breakdown characteristic test systems under electric appliance real impact voltage waveform Download PDFInfo
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- CN108710072A CN108710072A CN201810825907.XA CN201810825907A CN108710072A CN 108710072 A CN108710072 A CN 108710072A CN 201810825907 A CN201810825907 A CN 201810825907A CN 108710072 A CN108710072 A CN 108710072A
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 230000015556 catabolic process Effects 0.000 title claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 77
- 238000002474 experimental method Methods 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 6
- 208000002925 dental caries Diseases 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
Classifications
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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
- G01R31/12—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
- G01R31/1227—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 of components, parts or materials
- G01R31/1254—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 of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- 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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
SF6 gas breakdown characteristic test systems under the electric appliance real impact voltage waveform of the present invention, it is characterized in that, the system comprises impulse voltage generator, high-voltage conducting wires, casing, GIS shells, high-tension resistive, high voltage induction, direct-to-ground capacitance, the divider being built in inside GIS cavitys, test electrode and build-out resistors, the distributed constant that combination of gases electric appliance is simulated using lumped parameter simulates the distributed constant of physical device inside subject combination of gases electric appliance using lumped parameter.The pilot system can be used for the breakdown characteristics of the lower SF6 gases of learning gas combined electrical apparatus real impact voltage waveform effect.The present invention can be used to study SF6 gas breakdown characteristic of the surge voltage in combination of gases electric appliance when different location under actual waveform using the distributed constant of lumped parameter simulation combination of gases electric appliance.The present invention replaces distributed constant using lumped parameter, then can be used smaller experiment cavity to simulate actual large scale equipment.
Description
Technical field
The present invention relates to electric equipment test fields, more particularly under a kind of combination of gases electric appliance real impact voltage waveform
SF6 gas breakdown characteristic test systems.
Background technology
Combination of gases electric appliance（Gas Insulated Switchgear, GIS）It is the key equipment in power grid, has and safeguard
Measure feature small, that operational reliability is high.GIS device other than being subjected to power-frequency voltage, may also suffer thunder in positive row operational process
Surge and operating impulse voltage.Lightning impulse voltage is caused by nature thunderstorm weather, and breaker actuation etc. is then
It will produce operating impulse voltage.The characteristics of lightning impulse and switching impulse is that waveform rises rapidly, is then gradually reduced, has
Voltage magnitude is high, action time short feature.Since surge voltage is larger to the harm of equipment, at present for GIS device
It has been a routine test project to carry out live impulse withstand voltage experiment, and achieves preferable effect.But at present to GIS device
It carrying out when impulse withstand voltage experiment being the determination for carrying out waveform according to parameter based on standard, lightning impulse is 1.2/50 μ s,
Switching impulse is 250/2500 μ s, but actually since GIS device volume is larger, bus length is 700 meters sometimes, this
When GIS cavitys in the influence of guide rod resistance, inductance and direct-to-ground capacitance cause surge voltage that can occur when being propagated along GIS device
Distortion, causes that apparatus insulated bear is waveform after being distorted.But when either design still manufactures GIS device, absolutely
Edge level is carried out according to reference waveform, which results in GIS insulation used by the practical waveform born of SF6 gases and
The waveform gone out given in standard has larger difference, therefore grasps the lower SF6 gases of real impact voltage waveform effect in GIS device
Breakdown characteristics, for GIS insulating Designs, accident analysis and grasp GIS insulation basic insulation characteristic be of great significance.
Invention content
The present invention is in order to solve above-mentioned the deficiencies in the prior art, for GIS device insulation SF6 gases used in real impact electricity
The lower breakdown characteristics research of pressure effect provides SF6 gas breakdown spies under a kind of combination of gases electric appliance real impact voltage waveform
Property pilot system.
The present invention uses technical solution below：
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform of the present invention, which is characterized in that described
System includes impulse voltage generator, high-voltage conducting wires, casing, GIS shells, high-tension resistive, high voltage induction, direct-to-ground capacitance, built-in
Divider, test electrode inside GIS cavitys and build-out resistor, the distribution that combination of gases electric appliance is simulated using lumped parameter are joined
Number simulates the distributed constant of physical device inside subject combination of gases electric appliance using lumped parameter.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that institute
State that the lumped parameters such as high-tension resistive, high voltage induction and direct-to-ground capacitance are adjustable, to simulate different length and different voltages grade
Equipment.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that will
The divider is placed on subject inside cavity, to measure actually applied surge voltage on the electrode.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that adopt
Use impulse voltage generator as the driving voltage of equipment, which can generate lightning impulse voltage and operating impulse voltage,
Surge voltage is introduced by bushing on the high pressure guide rod in experiment cavity, and experiment cavity uses and practical GIS device material
Consistent aluminum metal shell simulates practical GIS device structure, and experiment cavity is grounded, and fills SF6 gases, gas in test cavity body
Air pressure can be adjusted arbitrarily.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that
One high-tension resistive of series connection and a high voltage induction on high pressure guide rod, a high-voltage capacitance in parallel, long to simulate one section over the ground
The resistance and inductance and direct-to-ground capacitance, concrete numerical value of the practical GIS device high pressure guide rod of degree can be according to the structures of physical device
It is calculated, different numerical value represents different guide rod length, and build-out resistor is in series in the tail portion of guide rod, build-out resistor
Value is equal with the value of test cavity bulk wave impedance, with the catadioptric to avoid wave.
The purposes of SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform of the present invention, it is special
Sign is that SF6 gas breakdown characteristic test systems can be used for learning gas combination electricity under the electric appliance real impact voltage waveform
The breakdown characteristics of the lower SF6 gases of device real impact voltage waveform effect, the present invention simulate combination of gases electric appliance using lumped parameter
Distributed constant, can be used to study SF6 gas of the surge voltage in combination of gases electric appliance when different location under actual waveform and hit
Wear characteristic.
Advantages of the present invention and effect are:
The electric appliance surge voltage propagation characteristic compact pilot system of the present invention, SF6 under the electric appliance real impact voltage waveform
Gas breakdown characteristic test system can be used for the breakdown of the lower SF6 gases of learning gas combined electrical apparatus real impact voltage waveform effect
Characteristic, the present invention can be used to study surge voltage in gas group using the distributed constant of lumped parameter simulation combination of gases electric appliance
SF6 gas breakdown characteristics when closing different location in electric appliance under actual waveform.
The breakdown characteristics for grasping the lower SF6 gases of real impact voltage waveform effect in GIS device, for GIS insulating Designs,
Accident analysis and the basic insulation characteristic for grasping GIS insulation are of great significance.
The present invention replaces distributed constant using lumped parameter, then can be used smaller experiment cavity to simulate actual large scale and set
It is standby.
It connects on high pressure guide rod a high-tension resistive and a high voltage induction, over the ground a high-voltage capacitance in parallel, to
The resistance and inductance and direct-to-ground capacitance, concrete numerical value for simulating the practical GIS device high pressure guide rod of a segment length can be according to reality
The Structure Calculation of equipment obtains, and different numerical value represents different guide rod length.
The high-pressure section of test electrode is connected with high pressure guide rod, test electrode bears surge voltage herein.Using interior
The capacitive divider set in the cavity obtains the real impact voltage waveform acted on test electrode.
High pressure guide rod tail portion series matching resistor is connected with shell.The resistance value of build-out resistor and high pressure guide rod wave impedance value one
It causes, avoids wave distortion caused by the catadioptric of wave.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that institute
State that the lumped parameters such as high-tension resistive, high voltage induction and direct-to-ground capacitance are adjustable, to simulate different length and different voltages grade
Equipment.
In actual tests, according to the needs of experiment, each competition can be adjusted flexibly, such as take：Impulse voltage generator is joined
Number can be chosen as needed, and parameters value, the spacing of test electrode and shape of lumped parameter etc. can be as needed
It is chosen.
Description of the drawings
Fig. 1 is the application schematic diagram of the present invention.
Specific implementation mode
Below in conjunction with specific implementation mode, present invention is further described in detail：
Embodiment 1
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform of the present invention, which is characterized in that described
System includes impulse voltage generator 1, high-voltage conducting wires 2, casing 3, GIS shells 4, high-tension resistive 5, high voltage induction 6, direct-to-ground capacitance
7, divider 8, test electrode 9 and the build-out resistor 10 being built in inside GIS cavitys utilize lumped parameter simulation combination of gases electricity
The distributed constant of device simulates the distributed constant of physical device inside subject combination of gases electric appliance using lumped parameter.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that institute
State that the lumped parameters such as high-tension resistive, high voltage induction and direct-to-ground capacitance are adjustable, to simulate different length and different voltages grade
Equipment.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that will
The divider is placed on subject inside cavity, to measure actually applied surge voltage on the electrode.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that adopt
Use impulse voltage generator as the driving voltage of equipment, which can generate lightning impulse voltage and operating impulse voltage,
Surge voltage is introduced by bushing on the high pressure guide rod in experiment cavity, and experiment cavity uses and practical GIS device material
Consistent aluminum metal shell simulates practical GIS device structure, and experiment cavity is grounded, and fills SF6 gases, gas in test cavity body
Air pressure can be adjusted arbitrarily.
SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that
One high-tension resistive of series connection and a high voltage induction on high pressure guide rod, a high-voltage capacitance in parallel, long to simulate one section over the ground
The resistance and inductance and direct-to-ground capacitance, concrete numerical value of the practical GIS device high pressure guide rod of degree can be according to the structures of physical device
It is calculated, different numerical value represents different guide rod length, and build-out resistor is in series in the tail portion of guide rod, build-out resistor
Value is equal with the value of test cavity bulk wave impedance, with the catadioptric to avoid wave.
The purposes of SF6 gas breakdown characteristic test systems, feature exist under the electric appliance real impact voltage waveform of the present invention
In it is real to can be used for learning gas combined electrical apparatus for SF6 gas breakdown characteristic test systems under the electric appliance real impact voltage waveform
The breakdown characteristics of the lower SF6 gases of border High Voltage Impulse Waveform effect, the present invention are divided using lumped parameter simulation combination of gases electric appliance
It is special to can be used to study SF6 gas breakdown of the surge voltage in combination of gases electric appliance when different location under actual waveform for cloth parameter
Property.
The present invention uses driving voltage of the impulse voltage generator as equipment, the generator that can generate lightning impulse voltage
And operating impulse voltage.
Surge voltage is introduced by bushing on the high pressure guide rod in experiment cavity, and experiment cavity uses and practical GIS
The consistent aluminum metal shell of equipment and materials simulates practical GIS device structure, experiment cavity ground connection.SF6 gas is filled in test cavity body
Body, gas atmosphere can be adjusted arbitrarily.
Practical GIS uses coaxial configuration, and resistance and inductance are mainly high pressure guide rod resistance and inductance, and capacitance is then high pressure
Conduit direct-to-ground capacitance, when GIS device voltage class is smaller, these parameters are little to waveform influence when scale is also smaller, but right
Larger in voltage levels equipment, these parameters can have an impact waveform, lead to wave distortion, if using with
The consistent experiment cavity of physical device structure, then can make experiment cavity excessively huge, therefore the present invention is replaced using lumped parameter
Distributed constant then can be used smaller experiment cavity to simulate actual large scale equipment.
It connects on high pressure guide rod a high-tension resistive and a high voltage induction, over the ground a high-voltage capacitance in parallel, to
The resistance and inductance and direct-to-ground capacitance, concrete numerical value for simulating the practical GIS device high pressure guide rod of a segment length can be according to reality
The Structure Calculation of equipment obtains, and different numerical value represents different guide rod length.
The high-pressure section of test electrode is connected with high pressure guide rod, test electrode bears surge voltage herein.Using interior
The capacitive divider set in the cavity obtains the real impact voltage waveform acted on test electrode.
High pressure guide rod tail portion series matching resistor is connected with shell.The resistance value of build-out resistor and high pressure guide rod wave impedance value one
It causes, avoids wave distortion caused by the catadioptric of wave.
Fig. 1 is the application schematic diagram of the present invention, wherein：Impulse voltage generator 1 can generate lightning impulse and switching impulse,
Surge voltage is introduced GIS by bushing to test on the high pressure guide rod of cavity.Test the adjustable SF6 gas of cavity gassy
Body.High pressure guide rod one high-tension resistive of series connection and a high voltage induction, over the ground in the practical cavity of high-voltage capacitance simulation in parallel
The distributed constant in portion.The high-pressure section of test electrode is connected with high pressure guide rod, test electrode bears rushing for high pressure guide rod herein
Hit voltage.High-tension resistive can be adjusted in actual use as needed, the concrete numerical value of inductance and direct-to-ground capacitance simulates different length
The GIS device of degree.It is in series with build-out resistor in the tail portion of guide rod, the value of build-out resistor is equal with the value of test cavity bulk wave impedance,
With the catadioptric to avoid wave.
In actual tests, according to the needs of experiment, each competition can be adjusted flexibly, such as take：Impulse voltage generator is joined
Number can be chosen as needed, and parameters value, the spacing of test electrode and shape of lumped parameter etc. can be as needed
It is chosen.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention is without being limited thereto, it is any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are each fallen in protection scope of the present invention.
Claims (6)
1. SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that the system packet
Include impulse voltage generator（1）, high-voltage conducting wires（2）, casing（3）, GIS shells（4）, high-tension resistive（5）, high voltage induction（6）, it is right
Ground capacitance（7）, the divider that is built in inside GIS cavitys（8）, test electrode（9）And build-out resistor（10）, utilize lumped parameter
The distributed constant for simulating combination of gases electric appliance simulates point of physical device inside subject combination of gases electric appliance using lumped parameter
Cloth parameter.
2. SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform according to claim 1,
It is characterized in that, the lumped parameters such as the high-tension resistive, high voltage induction and direct-to-ground capacitance are adjustable, to simulate different length and difference
The equipment of voltage class.
3. SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform according to claim 1,
It is characterized in that, the divider is placed on subject inside cavity, to measure actually applied surge voltage on the electrode.
4. SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform according to claim 1,
It is characterized in that, the driving voltage using impulse voltage generator as equipment, the generator can generate lightning impulse voltage and behaviour
Make surge voltage, surge voltage is introduced by bushing on the high pressure guide rod in experiment cavity, and experiment cavity uses and reality
The consistent aluminum metal shell of GIS device material, simulates practical GIS device structure, and experiment cavity is grounded, is filled in test cavity body
SF6 gases, gas atmosphere can be adjusted arbitrarily.
5. SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform according to claim 4,
It is characterized in that, connect on high pressure guide rod a high-tension resistive and a high voltage induction, over the ground a high-voltage capacitance in parallel, to
The resistance and inductance and direct-to-ground capacitance, concrete numerical value for simulating the practical GIS device high pressure guide rod of a segment length can be according to reality
The Structure Calculation of equipment obtains, and different numerical value represents different guide rod length, and build-out resistor is in series in the tail portion of guide rod,
The value of build-out resistor is equal with the value of test cavity bulk wave impedance, with the catadioptric to avoid wave.
6. the purposes of SF6 gas breakdown characteristic test systems under a kind of electric appliance real impact voltage waveform, which is characterized in that described
SF6 gas breakdown characteristic test systems can be used for learning gas combined electrical apparatus real impact electricity under electric appliance real impact voltage waveform
The breakdown characteristics of the lower SF6 gases of corrugating effect, the present invention, can using the distributed constant of lumped parameter simulation combination of gases electric appliance
To study SF6 gas breakdown characteristic of the surge voltage in combination of gases electric appliance when different location under actual waveform.
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| CN201810825907.XA CN108710072B (en) | 2018-07-25 | 2018-07-25 | SF6 gas breakdown characteristic test system under actual impulse voltage waveform of electric appliance |
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| CN201810825907.XA CN108710072B (en) | 2018-07-25 | 2018-07-25 | SF6 gas breakdown characteristic test system under actual impulse voltage waveform of electric appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114184913A (en) * | 2021-11-30 | 2022-03-15 | 国网重庆市电力公司电力科学研究院 | C5F10O-mixed gas electrical insulation characteristic test method |
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