CN117233545B - Hydropower station GIL equipment operation condition simulation device and method - Google Patents
Hydropower station GIL equipment operation condition simulation device and method Download PDFInfo
- Publication number
- CN117233545B CN117233545B CN202311005803.1A CN202311005803A CN117233545B CN 117233545 B CN117233545 B CN 117233545B CN 202311005803 A CN202311005803 A CN 202311005803A CN 117233545 B CN117233545 B CN 117233545B
- Authority
- CN
- China
- Prior art keywords
- gil
- gis
- current
- voltage
- test section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 65
- 230000007547 defect Effects 0.000 claims abstract description 38
- 230000000630 rising effect Effects 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims description 16
- 238000011160 research Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 229910018503 SF6 Inorganic materials 0.000 claims description 9
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 230000005684 electric field Effects 0.000 claims description 5
- 230000005674 electromagnetic induction Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000007774 longterm Effects 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a hydropower station GIL equipment operation condition simulation device and a hydropower station GIL equipment operation condition simulation method, wherein a GIL short sample defect test section is integrally and hermetically arranged in a closed shell; a temperature control device for controlling the internal temperature is arranged in the closed shell; the inside of the closed shell is provided with a forced air flow device for air flow; the device also comprises an auxiliary GIL section which is horizontally arranged, wherein a GIS contrast test section and a GIS defect test section which are vertically arranged are arranged on the opposite sides of the GIL short sample defect test section; the GIL short sample defect test section, the GIS comparison test section and the GIS defect test section are respectively connected with a current rising device for generating current and a voltage rising device for generating voltage. The device can simulate the external environment with different temperatures and wind speeds at the upper and lower parts of the GIL pipeline arranged in the vertical shaft outside the GIL pipeline, and can effectively solve the problem that the defect working condition of the GIL equipment of the long shaft cannot be truly simulated in a laboratory.
Description
Technical Field
The invention belongs to the field of high-voltage tests in the power industry, and particularly relates to a hydropower station GIL equipment operation condition simulation device and method.
Background
At present, the defect simulation of GIS and GIL mainly generates high voltage to a test section to cause the simulated defect to generate a discharge phenomenon, and then the partial discharge phenomenon is subjected to related research, but the simulation method can not truly reflect the actual operation condition of field equipment, and particularly does not generate large current and a magnetic field thereof in a conductor; in addition, the temperature difference between the upper end and the lower end also has influence on the flow of internal gas during the field operation; secondly, the vertical arrangement has a non-negligible effect on the actual simulation of the partial discharge due to the effect of gravity on the metal particles.
According to the actual condition of on-site operation, the variable operation working conditions of the GIS/GIL equipment mainly comprise load current and voltage level. The load current can influence the distribution of the thermal field in the GIS/GIL equipment, so that the generation and the propagation of partial discharge signals are influenced, and the partial discharge characteristics of the GIS are also directly influenced by the rising of the electric field caused by overvoltage. For this reason, both operating conditions need to be considered in the GIS/GIL partial discharge fault simulation study.
Disclosure of Invention
The invention provides a hydropower station GIL equipment operation condition simulation device and a hydropower station GIL equipment operation condition simulation method, wherein the device can simulate external environments with different temperatures and wind speeds at the upper part and the lower part of a GIL pipeline arranged in a vertical shaft outside the GIL pipeline arranged vertically, can also simultaneously generate 500kV rated voltage and 4500A rated current on a GIL conductor, and can effectively solve the problem that the defect condition of the long shaft GIL equipment cannot be simulated truly in a laboratory.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the hydropower station GIL equipment operation condition simulation device comprises a GIL short sample defect test section, wherein the GIL short sample defect test section is integrally and hermetically arranged in a closed shell; a temperature control device for controlling the internal temperature is arranged in the closed shell; the inside of the closed shell is provided with a forced air flow device for air flow; the device also comprises an auxiliary GIL section which is horizontally arranged, wherein a GIS contrast test section and a GIS defect test section which are vertically arranged are arranged on the opposite sides of the GIL short sample defect test section; the GIL short sample defect test section, the GIS comparison test section and the GIS defect test section are respectively connected with a current rising device for generating current and a voltage rising device for generating voltage.
The temperature control device comprises a first temperature controller and a second temperature controller which are correspondingly arranged at two ends of the closed shell.
The current rising device is connected with the alternating current phase-shifting voltage-regulating device through a power filter, and the alternating current phase-shifting voltage-regulating device is connected with the dry power transformer; the alternating current phase-shifting voltage-regulating device comprises an isolation step-up transformer and a control circuit which are directly connected with the dry-type power transformer; the control circuit is used for rectifying, filtering and inverting the current.
The current-rising device is used for generating large current for the GIL conductor and comprises a voltage regulator and a through type current-rising device, the voltage regulator and the through type current-rising device form a primary side, a GIS main loop is a secondary side, induced current is formed in the GIS/GIL main loop based on electromagnetic induction, and the effect of simulating load current is achieved.
The through type current rising device comprises an iron core and a coil, wherein the iron core is formed by stacking high-quality, light and thin silicon steel sheets, and is fastened by a high-strength iron core clamping piece and a pull rod; the coil uses double glass fiber covered copper wires, and a large section is selected to ensure that the equipment cannot generate heat under long-term operation, and the coil is connected with a voltage regulator, and the voltage regulator has the functions of voltage increasing and decreasing, zero returning indication, automatic zero returning after starting up and voltage display.
The through type current booster is coupled with the GIS/GIL shell, gas insulation exists between the through type current booster and the GIS/GIL center guide rod, and high voltage on the GIS/GIL center guide rod cannot influence the through type current booster, so that high voltage and high current are loaded simultaneously.
The booster device comprises a power frequency power supply, the power frequency power supply is connected with a compensation reactor, the compensation reactor is connected with a test transformer, and an output line of the test transformer is connected with a voltage divider, a lightning arrester and a high-voltage leading-out end; and the device also comprises a grounding end.
A method for carrying out simulation experiments by adopting a hydropower station GIL equipment operation condition simulation device comprises the following steps:
S1, checking before simulation:
checking that the connection of the simulation device is firm, the power supply is normal, and the sulfur hexafluoride gas pressure is normal;
s2, simulating boosting:
The voltage of the conductor of the GIL equipment is gradually increased through a partial discharge-free test transformer, and the voltage is gradually increased to 500kV from 100kV according to the stay time of 60s every 50 kV;
s3, simulating up-flow:
Generating large current to the GIL conductor by using a current rising device, gradually starting from 1000A, and increasing the current to 4500A step by step according to 60 stay of each 500A;
S4, temperature control:
The temperature control device is utilized to control the temperatures of the upper end and the lower end of the closed space of the closed GIL short sample defect test section according to the temperatures of the upper end and the lower end of a vertical shaft of a hydropower station site;
s5, air flow control:
the forced air flowing device is used for flowing air in the enclosed space, and the flowing speed and the flowing direction are controlled according to the wind speed and the wind direction at the upper end and the lower end of a vertical shaft on the site of a hydropower station.
According to the actual field operation, the variable operation working conditions of the GIS/GIL equipment mainly comprise load current and voltage level, the load current can influence the internal thermal field distribution of the GIS/GIL equipment, then the generation and the propagation of partial discharge signals are influenced, the electric field rise caused by overvoltage can also directly influence the GIS partial discharge characteristics, and therefore, the two operation working conditions need to be considered in the GIS/GIL partial discharge fault simulation research;
the simulation device carries out the research on the typical partial discharge characteristics of GIS/GIL equipment under different operation conditions, and the specific operation steps are as follows:
load current influence study:
Firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, loading rated power frequency test electricity; starting the current rising device to enable the GIS/GIL main loop to generate target current; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; the influence condition of the load current on GIS partial discharge can be mastered through a plurality of groups of experimental researches;
Voltage influence study:
firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, starting a current rising device to enable a GIS/GIL main loop to generate target current; thirdly, setting the output voltage of the test transformer according to the voltage type to be simulated, and applying a target voltage on the GIS/GIL main loop; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; and the influence condition of the voltage level on GIS partial discharge can be mastered through a plurality of groups of experimental researches.
The invention has the beneficial effects that:
1. The device can simulate the external environments with different temperatures and wind speeds at the upper part and the lower part of the GIL pipeline arranged in the vertical shaft outside the GIL pipeline, can simultaneously generate 500kV rated voltage and 4500A rated current on the GIL conductor, and can effectively solve the problem that the defect working condition of the GIL equipment of the long shaft cannot be truly simulated in a laboratory.
2. The invention takes the voltage division signal from the voltage generator as the starting signal of the current loading device so as to realize the frequency and phase synchronization of the voltage and the current.
3. The GIS defect test section adopts relative closed arrangement, and is internally provided with a temperature control and air forcing device.
4. The invention is used for simulating boosting: the conductor voltage of the GIL device is gradually increased through the partial discharge-free test transformer, and the voltage is gradually increased to 500kV from 100kV at a stop of 60s every 50 kV.
5. The invention simulates up-flow: the high current is generated to the GIL conductor by the current rising device, the current is gradually increased to 4500A from 1000A by 60 steps of stay every 500A.
6. The device comprises three test sections, namely a GIL short sample defect test section, a closed shell thereof, an auxiliary GIL section, a GIS defect test section and the like, and can simulate various defects simultaneously.
7. The current rising device is a primary side formed by the voltage regulator and the through type current rising device, the GIS main loop is a secondary side, and the induced current can be formed in the GIS/GIL main loop based on the law of electromagnetic induction, so that the effect of simulating load current is achieved.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is an equivalent circuit diagram of the current rising device of the present invention.
Fig. 3 shows the basic structure of the through-type riser of the present invention.
Fig. 4 is a schematic diagram of a coupling installation structure of a through-type current booster and a GIS/GIL of the present invention.
In the figure: the device comprises a dry power transformer 1, an alternating current phase-shifting voltage regulating device 2, a power filter 3, a current rising device 4, a GIS comparison test section 5, a GIS defect test section 6, a first temperature controller 7, a closed shell 8, a second temperature controller 9, a GIL short sample defect test section 10, a forced air flow device 11, an auxiliary GIL section 12, a grounding end 13, a high voltage leading-out end 14, a test transformer 15, a power frequency power supply 16, a compensation reactor 17, a voltage divider 18, a lightning arrester 19, a voltage regulator 20, a through type current rising device 21, a GIS main loop 22, a coil 24, an iron core 25, a GIS/GIL shell 26 and a GIS/GIL center guide rod 27.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
Referring to fig. 1, a hydropower station GIL equipment operation condition simulation device comprises a GIL short sample defect test section 10, wherein the GIL short sample defect test section 10 is integrally and hermetically arranged in a closed shell 8; the inside of the closed casing 8 is provided with a temperature control device for controlling the temperature of the inside; the inside of the closed casing 8 is provided with forced air flow means 11 for air flow; the device further comprises a horizontally arranged auxiliary GIL section 12, wherein the opposite sides of the GIL short sample defect test section 10 are provided with a GIS contrast test section 5 and a GIS defect test section 6 which are vertically arranged; the GIL short sample defect test section 10, the GIS comparison test section 5 and the GIS defect test section 6 are respectively connected with a current rising device 4 for generating current and a voltage rising device for generating voltage. The device can simulate the external environment with different temperatures and wind speeds at the upper part and the lower part of the GIL pipeline arranged in the vertical shaft outside the GIL pipeline, can also simultaneously generate 500kV rated voltage and 4500A rated current on the GIL conductor, and can effectively solve the problem that the defect working condition of the GIL equipment of the long shaft cannot be truly simulated in a laboratory.
Further, the temperature control device comprises a first temperature controller 7 and a second temperature controller 9 which are correspondingly arranged at two ends of the closed shell 8. The temperature control device can be used for controlling the temperature inside the simulation device, so that different temperature environments of the two ends are simulated.
Further, the current rising device 4 is connected with the alternating current phase-shifting voltage-regulating device 2 through the power filter 3, and the alternating current phase-shifting voltage-regulating device 2 is connected with the dry type power transformer 1; the alternating current phase-shifting voltage-regulating device 2 comprises an isolation step-up transformer 201 and a control circuit 202 which are directly connected with the dry-type power transformer 1; the control circuit 202 is used to rectify, filter and invert the current. By passing through
The laboratory simulation research is difficult to realize simultaneous loading of high voltage and high current by adopting a single power supply, so that the existing research is often carried out under an empty load condition. Therefore, on the basis of the partial discharge simulation scheme and the partial discharge detection scheme, the design scheme of the GIS/GIL partial discharge fault simulation experiment platform based on two power supplies is provided, the simulation of the platform on load current is realized through a through type current booster, and the simulation on overvoltage level can be realized through a power frequency test transformer. In the experiment, a voltage division signal is taken from a voltage generator as a starting signal of a current loading device so as to realize the frequency and phase synchronization of voltage and current.
Further, referring to fig. 2, the current-raising device 4 is configured to generate a large current to the GIL conductor, the current-raising device 4 includes a voltage regulator 20 and a through-type current-raising device 21, where the voltage regulator 20 and the through-type current-raising device 21 form a primary side, and the GIS main loop 22 is a secondary side, and an induced current is formed in the GIS/GIL main loop based on electromagnetic induction, so as to achieve an effect of simulating a load current. The current-rising device 4 generates a large current to the GIL conductor, gradually starts from 1000A, and increases the current to 4500A step by 60 steps per 500A dwell.
Further, referring to fig. 3, the through-type current booster 21 includes an iron core 25 and a coil 24, where the iron core 25 is formed by stacking high-quality, light and thin silicon steel sheets, and is fastened by a high-strength iron core clamping piece and a pull rod; the coil 24 uses double glass fiber covered copper wires, and a large section is selected to ensure that the device cannot generate heat under long-term operation, the coil 24 is connected with the voltage regulator 20, and the voltage regulator 20 has the functions of voltage rising and falling, zero return indication, automatic zero return when being started and voltage display.
Further, referring to fig. 4, the through-type current booster 21 is coupled to the GIS/GIL housing 26, and there is gas insulation between the through-type current booster 21 and the GIS/GIL central guide rod 27, so that the high voltage on the GIS/GIL central guide rod 27 does not affect the through-type current booster 21, thereby ensuring the simultaneous loading of high voltage and high current.
Further, the boosting device comprises a power frequency power supply 16, the power frequency power supply 16 is connected with a compensation reactor 17, the compensation reactor 17 is connected with a test transformer 15, and an output line of the test transformer 15 is connected with a voltage divider 18, a lightning arrester 19 and a high-voltage leading-out end 14; and also includes a ground terminal 13. The overvoltage is generated by a power frequency test transformer. And in the experiment, the output voltage of the power frequency test transformer is increased.
Example 2:
A method for carrying out simulation experiments by adopting a hydropower station GIL equipment operation condition simulation device comprises the following steps:
S1, checking before simulation:
checking that the connection of the simulation device is firm, the power supply is normal, and the sulfur hexafluoride gas pressure is normal;
s2, simulating boosting:
The voltage of the conductor of the GIL equipment is gradually increased through a partial discharge-free test transformer, and the voltage is gradually increased to 500kV from 100kV according to the stay time of 60s every 50 kV;
s3, simulating up-flow:
Generating large current to the GIL conductor by using a current rising device 4, gradually starting from 1000A, and increasing the current to 4500A step by step according to the residence time of 60 steps of 500A;
S4, temperature control:
the temperature control device is utilized to control the temperatures of the upper end and the lower end of the closed space of the closed GIL short sample defect test section 10 according to the temperatures of the upper end and the lower end of a vertical shaft of a hydropower station site;
s5, air flow control:
the forced air flow device 11 is used for making the air in the closed space flow, and the flow speed and direction are controlled according to the wind speed and direction of the upper and lower ends of the on-site vertical shaft of a hydropower station.
Example 3:
According to the actual field operation, the variable operation working conditions of the GIS/GIL equipment mainly comprise load current and voltage level, the load current can influence the internal thermal field distribution of the GIS/GIL equipment, then the generation and the propagation of partial discharge signals are influenced, the electric field rise caused by overvoltage can also directly influence the GIS partial discharge characteristics, and therefore, the two operation working conditions need to be considered in the GIS/GIL partial discharge fault simulation research;
the simulation device carries out the research on the typical partial discharge characteristics of GIS/GIL equipment under different operation conditions, and the specific operation steps are as follows:
load current influence study:
Firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, loading rated power frequency test electricity; starting the current rising device to enable the GIS/GIL main loop to generate target current; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; the influence condition of the load current on GIS partial discharge can be mastered through a plurality of groups of experimental researches;
Voltage influence study:
firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, starting a current rising device to enable a GIS/GIL main loop to generate target current; thirdly, setting the output voltage of the test transformer according to the voltage type to be simulated, and applying a target voltage on the GIS/GIL main loop; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; and the influence condition of the voltage level on GIS partial discharge can be mastered through a plurality of groups of experimental researches.
And (3) analyzing the difference between the simulated working condition and the actual working condition in a laboratory:
Limited by laboratory power, the GIS/GIL fault simulation scheme provided by the application adopts a power frequency test transformer and a through type current booster to realize simultaneous loading of high voltage and high current. Compared with the real operation condition, the local discharge signal generation and propagation rule is unchanged under the laboratory simulation condition. As only electrical and thermal stresses affect the behavior of partial discharge generation and development. The electric field distribution in the GIS/GIL equipment can be truly reproduced by adopting the power frequency test transformer, and the thermal field distribution in the GIS/GIL equipment can be truly reproduced by adopting the current booster to improve the current flowing in the guide rod.
Claims (7)
1. The hydropower station GIL equipment operation condition simulation device is characterized by comprising a GIL short sample defect test section (10), wherein the GIL short sample defect test section (10) is integrally and hermetically arranged in a closed shell (8); a temperature control device for controlling the internal temperature is arranged in the closed shell (8); the inside of the closed shell (8) is provided with a forced air flow device (11) for air flow; the device also comprises an auxiliary GIL section (12) which is horizontally arranged, wherein a GIS contrast test section (5) and a GIS defect test section (6) which are vertically arranged are arranged on opposite sides of the GIL short sample defect test section (10); the GIL short sample defect test section (10), the GIS comparison test section (5) and the GIS defect test section (6) are respectively connected with a current rising device (4) for generating current and a voltage boosting device for generating voltage;
The current rising device (4) is connected with the alternating current phase-shifting voltage-regulating device (2) through the power filter (3), and the alternating current phase-shifting voltage-regulating device (2) is connected with the dry type power transformer (1); the alternating current phase-shifting voltage-regulating device (2) comprises an isolation step-up transformer (201) and a control circuit (202), wherein the isolation step-up transformer (201) is directly connected with the dry power transformer (1); the control circuit (202) is used for rectifying, filtering and inverting the current;
The booster device comprises a power frequency power supply (16), the power frequency power supply (16) is connected with a compensation reactor (17), the compensation reactor (17) is connected with a test transformer (15), and a voltage divider (18), a lightning arrester (19) and a high-voltage leading-out end (14) are connected on an output line of the test transformer (15); also comprises a grounding end (13).
2. The hydropower station GIL plant operation condition simulation device according to claim 1, wherein the temperature control device comprises a first temperature controller (7) and a second temperature controller (9) which are correspondingly arranged at two ends of the closed shell (8).
3. The hydropower station GIL equipment operation condition simulation device according to claim 1, wherein the current rising device (4) is used for generating large current for a GIL conductor, the current rising device (4) comprises a voltage regulator (20) and a through type current rising device (21), the voltage regulator (20) and the through type current rising device (21) form a primary side, a GIS main loop (22) is a secondary side, and induced current is formed in the GIS/GIL main loop based on electromagnetic induction, so that the effect of simulating load current is achieved.
4. The hydropower station GIL equipment operation condition simulation device according to claim 3, wherein the through type current booster (21) comprises an iron core (25) and a coil (24), the iron core (25) is formed by stacking high-quality, light and thin silicon steel sheets, and the iron core is fastened by a high-strength iron core clamping piece and a pull rod; the coil (24) uses double glass fiber covered copper wires, a large section is selected to ensure that the device cannot generate heat under long-term operation, the coil (24) is connected with the voltage regulator (20), and the voltage regulator (20) has the functions of voltage rising and dropping, zero return indication, automatic zero return when being started and voltage display.
5. The hydropower station GIL equipment operation condition simulation device according to claim 4, wherein the through-flow booster (21) is installed in a coupling mode with the GIS/GIL shell (26), gas insulation exists between the through-flow booster (21) and the GIS/GIL central guide rod (27), and high voltage on the GIS/GIL central guide rod (27) does not affect the through-flow booster (21), so that simultaneous loading of high voltage and high current is guaranteed.
6. A simulation experiment method using a hydropower station GIL equipment operation condition simulation apparatus according to any one of claims 1 to 5, comprising the steps of:
S1, checking before simulation:
checking that the connection of the simulation device is firm, the power supply is normal, and the sulfur hexafluoride gas pressure is normal;
s2, simulating boosting:
The voltage of the conductor of the GIL equipment is gradually increased through a partial discharge-free test transformer, and the voltage is gradually increased to 500kV from 100kV according to the stay time of 60s every 50 kV;
s3, simulating up-flow:
Generating large current to the GIL conductor by using a current rising device (4), gradually starting from 1000A, and increasing the current to 4500A step by step according to 60 stay of each 500A;
S4, temperature control:
The temperature control device is utilized to control the temperatures of the upper end and the lower end of a closed space of the closed GIL short sample defect test section (10) according to the temperatures of the upper end and the lower end of a field vertical shaft of a hydropower station;
s5, air flow control:
The forced air flowing device (11) is used for flowing the air in the closed space, and the flowing speed and the flowing direction are controlled according to the wind speed and the wind direction at the upper end and the lower end of a vertical shaft on the site of a hydropower station.
7. The simulation experiment method of the hydropower station GIL equipment operation condition simulation device, according to claim 6, wherein the simulation experiment method comprises the following steps:
According to the actual field operation, the variable operation working conditions of the GIS/GIL equipment mainly comprise load current and voltage level, the load current can influence the internal thermal field distribution of the GIS/GIL equipment, then the generation and the propagation of partial discharge signals are influenced, the electric field rise caused by overvoltage can also directly influence the GIS partial discharge characteristics, and therefore, the two operation working conditions need to be considered in the GIS/GIL partial discharge fault simulation research;
the simulation device carries out the research on the typical partial discharge characteristics of GIS/GIL equipment under different operation conditions, and the specific operation steps are as follows:
load current influence study:
Firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, loading rated power frequency test electricity; starting the current rising device to enable the GIS/GIL main loop to generate target current; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; the influence condition of the load current on GIS partial discharge can be mastered through a plurality of groups of experimental researches;
Voltage influence study:
firstly, presetting a partial discharge model in a simulation device, vacuumizing a corresponding air chamber, and filling SF6 to 0.5MPa; secondly, starting a current rising device to enable a GIS/GIL main loop to generate target current; thirdly, setting the output voltage of the test transformer according to the voltage type to be simulated, and applying a target voltage on the GIS/GIL main loop; finally, detecting ultrasonic wave, ultrahigh frequency and high frequency current signals by adopting various partial discharge detection methods, and analyzing the generation and propagation characteristics of typical partial discharge signals; and the influence condition of the voltage level on GIS partial discharge can be mastered through a plurality of groups of experimental researches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311005803.1A CN117233545B (en) | 2023-08-10 | 2023-08-10 | Hydropower station GIL equipment operation condition simulation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311005803.1A CN117233545B (en) | 2023-08-10 | 2023-08-10 | Hydropower station GIL equipment operation condition simulation device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117233545A CN117233545A (en) | 2023-12-15 |
| CN117233545B true CN117233545B (en) | 2024-05-10 |
Family
ID=89095644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311005803.1A Active CN117233545B (en) | 2023-08-10 | 2023-08-10 | Hydropower station GIL equipment operation condition simulation device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117233545B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203838258U (en) * | 2014-03-28 | 2014-09-17 | 云南电力试验研究院（集团）有限公司电力研究院 | Whole set icing and ice melting test device capable of applying voltage and current on overhead conductor |
| KR20140144348A (en) * | 2013-06-10 | 2014-12-19 | 현대중공업 주식회사 | Offshore substation having the duct |
| CN105510786A (en) * | 2016-01-11 | 2016-04-20 | 国网浙江省电力公司电力科学研究院 | Typical defect simulated testing platform of high-voltage cable |
| CN105548823A (en) * | 2015-12-01 | 2016-05-04 | 武汉大学 | Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device |
| CN106066452A (en) * | 2016-08-03 | 2016-11-02 | 国网浙江省电力公司电力科学研究院 | Quantity of state detecting system under a kind of high tension cable typical defect |
| CN110069804A (en) * | 2019-01-10 | 2019-07-30 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of hot-spot faulty physical defect detecting device |
| CN110514976A (en) * | 2019-09-29 | 2019-11-29 | 国网江苏省电力有限公司 | A kind of GIS insulation defect monitoring device, system and detection method |
| CN113567264A (en) * | 2021-08-24 | 2021-10-29 | 国家电网公司华中分部 | Experimental device and experimental method capable of simultaneously simulating high voltage and high temperature of GIL inner conductor |
| CN114047410A (en) * | 2021-08-25 | 2022-02-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Mechanical vibration simulation system and method for GIS/GIL equipment |
| CN114252745A (en) * | 2021-11-26 | 2022-03-29 | 南方电网科学研究院有限责任公司 | Experimental device for insulation performance of mixed gas under surface discharge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535058B (en) * | 2019-09-04 | 2024-05-03 | 上海乐研电气有限公司 | Electrical system with online sampling and checking function and checking method thereof |
-
2023
- 2023-08-10 CN CN202311005803.1A patent/CN117233545B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140144348A (en) * | 2013-06-10 | 2014-12-19 | 현대중공업 주식회사 | Offshore substation having the duct |
| CN203838258U (en) * | 2014-03-28 | 2014-09-17 | 云南电力试验研究院（集团）有限公司电力研究院 | Whole set icing and ice melting test device capable of applying voltage and current on overhead conductor |
| CN105548823A (en) * | 2015-12-01 | 2016-05-04 | 武汉大学 | Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device |
| CN105510786A (en) * | 2016-01-11 | 2016-04-20 | 国网浙江省电力公司电力科学研究院 | Typical defect simulated testing platform of high-voltage cable |
| CN106066452A (en) * | 2016-08-03 | 2016-11-02 | 国网浙江省电力公司电力科学研究院 | Quantity of state detecting system under a kind of high tension cable typical defect |
| CN110069804A (en) * | 2019-01-10 | 2019-07-30 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of hot-spot faulty physical defect detecting device |
| CN110514976A (en) * | 2019-09-29 | 2019-11-29 | 国网江苏省电力有限公司 | A kind of GIS insulation defect monitoring device, system and detection method |
| CN113567264A (en) * | 2021-08-24 | 2021-10-29 | 国家电网公司华中分部 | Experimental device and experimental method capable of simultaneously simulating high voltage and high temperature of GIL inner conductor |
| CN114047410A (en) * | 2021-08-25 | 2022-02-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Mechanical vibration simulation system and method for GIS/GIL equipment |
| CN114252745A (en) * | 2021-11-26 | 2022-03-29 | 南方电网科学研究院有限责任公司 | Experimental device for insulation performance of mixed gas under surface discharge |
Non-Patent Citations (2)
| Title |
|---|
| GIS设备振动状态检测及隔离开关接触不良缺陷识别方法研究;王旭鹏;《中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑)》;20221015;第C042-319页 * |
| Modification of HVDC GIS/GIL Basin Insulators Based on Electrical and Mechanical Collaborative Design;Bo Zhang;《2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)》;20200910;正文第1至5页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117233545A (en) | 2023-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106093725B (en) | High-voltage bushing capacitor core insulation performance testing device | |
| CN105785240B (en) | Oil-immersed transformer integration partial discharge defects simulation device | |
| CN111551875B (en) | Fault simulation system of multi-state transformer | |
| CN106324444B (en) | Transformer test platform | |
| CN111781476A (en) | Transformer dry-type casing defect simulation and performance state monitoring system and method | |
| CN108459249B (en) | Extra-high voltage GIL alternating current withstand voltage test device and method with controllable saturation reactance | |
| CN107797041A (en) | A kind of gas insulated electric apparatus inner sensor Environmental compatibility test system | |
| CN101294985A (en) | Power supply device for controllable reactor induction voltage-resistant experiment and its partial discharging measurement method | |
| CN109406969A (en) | A kind of air insulating device high-voltage great-current Combined Trials system | |
| CN103472393A (en) | Wind turbine power generation set high voltage ride through test system | |
| CN106959406B (en) | Test device and method for magnetizing generator core under low voltage | |
| Zhang et al. | A prediction model of hot spot temperature for split-windings traction transformer considering the load characteristics | |
| CN117233545B (en) | Hydropower station GIL equipment operation condition simulation device and method | |
| CN112526292B (en) | Distribution cable operation quality assessment test platform | |
| Yu et al. | Simulation Analysis on Conducted EMD Caused by Valves in $\pm $800 kV UHVDC Converter Station | |
| CN111413602A (en) | GIS equipment insulator combined test system and method | |
| CN115909880A (en) | Visual internal defect and fault verification test transformer | |
| CN206002640U (en) | A kind of current lifting device | |
| CN114818552A (en) | Multi-working-condition power quality analysis method for high-speed railway traction power supply system | |
| CN212410767U (en) | Alternating current voltage withstand test device for high-voltage cable | |
| Okabe et al. | Partial discharge signal propagation characteristics inside the winding of gas-filled power transformer-experimental study using winding models in the air | |
| Liu et al. | Design and Development of Combined SF6 Enclosed Gas Insulated Series Resonance Testing Equipment | |
| Yükselen et al. | Analysis of Lightning Impulse Effects on Three Winding Transformer Used in Solar System Based ANSYS Maxwell | |
| Wagenaar et al. | EHV transformer dielectric specification improvements | |
| Zhou et al. | Fault simulation platform for transformer and on-load tap-changer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |