CN113608059B - GIS insulator heating aging test device and method - Google Patents
GIS insulator heating aging test device and method Download PDFInfo
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- CN113608059B CN113608059B CN202111060673.2A CN202111060673A CN113608059B CN 113608059 B CN113608059 B CN 113608059B CN 202111060673 A CN202111060673 A CN 202111060673A CN 113608059 B CN113608059 B CN 113608059B
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- 239000012212 insulator Substances 0.000 title claims abstract description 115
- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 230000032683 aging Effects 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 11
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 239000004417 polycarbonate Substances 0.000 claims description 13
- 229920000515 polycarbonate Polymers 0.000 claims description 13
- 238000002474 experimental method Methods 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 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
- G01R31/003—Environmental or reliability tests
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a GIS insulator heating aging test device and a GIS insulator heating aging test method, wherein the GIS insulator heating aging test device comprises a hollow electrode, wherein the hollow electrode is connected to two sides of a basin-type insulator through threads; a first shielding cover is arranged at the joint of the hollow electrode and the basin-type insulator; the upper end of the hollow electrode above the basin-type insulator is connected with a high-voltage power supply, and a second shielding cover is sleeved at the end part of the hollow electrode; the tail end of the hollow electrode below the basin-type insulator is fixed on the support frame through the support seat; the outer part of the basin-type insulator is fixedly provided with a low-voltage shielding cover, and the circular hollow groove is sleeved outside the low-voltage shielding cover; the upper part and the lower part of the hollow electrode are connected with a high-temperature fluid inlet and outlet pipe; the low-temperature fluid inlet and outlet pipes are symmetrically connected to two sides of the circular hollow groove; insulating oil, a heating device, a temperature sensor and an oil pump are arranged in the high-temperature oil storage tank and the low-temperature oil storage tank. According to the invention, the high-voltage electrode and the low-voltage electrode of the basin-type insulator are heated, and meanwhile, the actual working condition of the basin-type insulator is simulated by pressurization, so that the aging of the basin-type insulator is accelerated.
Description
Technical Field
The invention belongs to the technical field of high-voltage equipment experiments, and particularly relates to a GIS insulator heating aging test device and method.
Background
The gas-insulated fully-enclosed combined type switch equipment (Gas Insulated Switchgear, GIS) has the characteristics of small occupied area, convenient installation, reliable operation, stable insulating property, small maintenance workload and the like, is widely applied to substations with various voltage levels, and has a plurality of operation equipment. However, once the GIS equipment fails, the power outage range is wide, the power outage time is long, and the safe and stable operation of the whole power grid can be greatly influenced.
From the last 80 th century, the power grid of China gradually adopts GIS equipment, and the application scale is larger and larger. At present, the operation years of a large number of on-line GIS devices are close to or about to be close to the 30-year nominal service life of the on-line GIS devices, whether the insulation states of the devices are ideal or not can still be operated safely, whether the on-line GIS devices need to be returned in advance or the service life of the on-line GIS devices is prolonged, and the problems have great influence on the operation reliability of the GIS devices and are the problems to be solved in order to ensure the safety of the power grid.
The basin-type insulator is mainly used as solid insulation of GIS equipment, and the main difference between the basin-type insulator and SF6 gas insulation is that the basin-type insulator does not have self-recovery capability, so that the insulation state of the GIS equipment mainly depends on the insulation state of the basin-type insulator. Because GIS is different in operation condition under different substations, the ageing damage degree that leads to basin insulator performance also varies. Basin-type insulators with insulating properties aged and damaged to a worse degree after long-term operation are taken out of operation in time, and otherwise, the safety and reliability of the operation of a power system are reduced; the basin-type insulator with good insulation performance should be kept running in the power system, so that the service life of the basin-type insulator is prolonged as much as possible, and huge resource waste is avoided. Because the GIS has a complex overall structure and a plurality of overhauling processes, once the GIS fails, the result is quite serious.
Therefore, in order to grasp the aging state of the basin-type insulator of the GIS equipment and ensure the safe and reliable operation of the equipment, a series of experiments related to the aging of the basin-type insulator of the GIS equipment are necessary to be carried out. The method has great significance for reducing the incidence rate of sudden faults of the basin-type insulator of the GIS equipment and improving the safe operation level of the power grid.
At present, an experimental platform for heating and ageing of insulators has the defects that the accelerated ageing test of insulators is carried out by putting a heating plate into an oven for heating, and the heating is uniform in the mode and does not accord with the working condition of a basin-type insulator under actual working conditions.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a GIS insulator heating aging test device and a GIS insulator heating aging test method, which are suitable for basin-type insulator accelerated aging experiments under a temperature field.
The GIS insulator heating aging test device comprises a hollow electrode, a basin-type insulator, a high-temperature oil storage tank, a low-temperature oil storage tank, an oil pump, a temperature control device, a temperature sensor and a circular hollow groove, wherein the hollow electrode is a hollow metal guide rod, external threads are arranged at two ends of the hollow electrode, the basin-type insulator is provided with internal threads, and the hollow electrode is connected to two sides of the basin-type insulator through threads; a first shielding cover is arranged at the joint of the hollow electrode and the basin-type insulator; the upper end of the hollow electrode above the basin-type insulator is connected with a high-voltage power supply, and a second shielding cover is sleeved at the end part of the hollow electrode; the tail end of the hollow electrode below the basin-type insulator is fixed on the support frame through the support seat; the support frame is grounded; the outer part of the basin-type insulator is fixedly provided with a low-voltage shielding cover, and the circular hollow groove is sleeved outside the low-voltage shielding cover;
the upper part and the lower part of the hollow electrode are connected with high-temperature fluid inlet and outlet pipes, wherein the upper part is arranged above the basin-type insulator, and the lower part is arranged below the basin-type insulator; the other end of the high-temperature fluid inlet and outlet pipe is connected with a high-temperature oil storage tank;
the low-temperature fluid inlet and outlet pipes are symmetrically connected to two sides of the circular hollow groove, and two tail ends of the low-temperature fluid inlet and outlet pipes are connected with the low-temperature oil storage tank;
Insulating oil, a heating device, a temperature sensor and an oil pump are arranged in the high-temperature oil storage tank and the low-temperature oil storage tank, the heating device, the temperature sensor and the oil pump are connected with the temperature control device through control wires, and the temperature control device is connected with the PC through wireless communication.
The cross section of the round hollow groove is semicircular.
And high-temperature fluid in the high-temperature oil storage tank flows into the high-pressure hollow electrode from the lower port of the high-temperature oil storage tank and flows out from the upper port of the high-temperature oil storage tank.
The pipe body of the high-temperature fluid inlet and outlet pipe enters the hollow electrode, and the joint of the high-temperature fluid inlet and outlet pipe and the hollow electrode is sealed by sealant to ensure no leakage.
The circular hollow groove is adhered or welded on the outer side of the low-voltage shielding cover and is positioned at the horizontal corresponding position of the basin-type insulator.
The low-temperature fluid inlet and outlet pipe is a hard pipe, is made of polytetrafluoroethylene, and is wrapped by rock wool.
The high-temperature oil storage tank and the low-temperature oil storage tank are made of Polycarbonate (PC) plastic.
The heating device comprises a resistance wire.
The temperature sensor is one of a thermocouple, a thermistor, a Resistance Temperature Detector (RTD), and an IC temperature sensor.
The experimental method of the GIS insulator heating aging test device specifically comprises the following steps:
Step 1: fixing a basin-type insulator of a test piece on a test bed, fixing the insulator in a low-voltage shielding cover, and mounting hollow electrodes at the upper end and the lower end of the insulator;
Step 2: connecting a high-temperature fluid inlet and outlet pipe with a hollow electrode, connecting a low-temperature fluid inlet and outlet pipe with a low-temperature electrode of an insulator, ensuring that insulating oil in a high-temperature oil storage tank enters and exits from a lower port and an upper port, and ensuring that an interface between the high-temperature fluid inlet and outlet pipe and the hollow electrode is free from liquid leakage;
Setting the temperature of oil in a high-temperature oil storage tank and a low-temperature oil storage tank on a temperature control device, starting a heating device to heat insulating oil in the high-temperature oil storage tank and the low-temperature oil storage tank, and heating the oil in the oil storage tank to a preset temperature;
Step 4: starting an oil pump, continuously inputting heated oil in the high-temperature oil storage tank and the low-temperature oil storage tank into the hollow electrode and the round hollow groove, and heating two ends of the insulator; the PC monitors the oil temperature in the oil storage tank and the working state of the oil pump in real time;
Step 5: after the temperature of the insulator electrode is stable for 5 to 10 minutes, a high-voltage power supply connected with the two ends of the hollow guide rod is connected, a step-up method is adopted to apply voltage to the two ends of the insulator of the test piece, the rated working voltage of the insulator is reached, the basin-type insulator is in an excessively high Wen Guoya working state for a long time, and the aging of the insulator is accelerated.
The beneficial effects of the invention are as follows:
1. The invention can replace insulators made of various materials, is suitable for various voltage conditions of alternating current, direct current and impact, and has certain universality.
2. The invention adopts the mode of heating the electrodes at the two ends of the insulator by oil bath to simulate the heating condition of the GIS under various working conditions in actual engineering operation, and the used heating fluid is oil, has the insulating effect, ensures insulation when flowing through the high-voltage hollow electrode, and protects the oil pump and the motor.
3. The invention adopts oil bath heating and can increase voltage at the same time, thereby realizing simultaneous electric heating and aging.
4. According to the invention, the oil bath is added on the low-pressure shield according to the comparison of the later experimental result to simulate the actual working condition.
5. The invention can simulate the temperature field of the basin-type insulator in actual operation, and is more difficult to realize than a uniform temperature field.
6. The invention can set higher temperature than the actual working condition to accelerate the aging of the insulator, can also accelerate the aging by increasing the voltage, and can increase the defects to achieve the aim of accelerating the aging.
Drawings
FIG. 1 is a schematic connection diagram of an insulator heating aging experiment platform provided by the invention;
FIG. 2 is a schematic diagram of the oil flow of a semicircular hollow tank in the present invention;
wherein,
The device comprises a hollow electrode 1, a shielding cover 3, a low-temperature fluid inlet and outlet pipe 4, a round hollow groove 5, a high-temperature oil storage tank 6, a heating device 7, a temperature sensor 8, a temperature control device 9, a high-temperature fluid inlet and outlet pipe 10, a low-pressure shielding cover 11, a supporting seat 12, an oil pump 13, a low-temperature oil storage tank 14 and a supporting frame 15.
Detailed Description
For better explanation of the present invention, for easy understanding, the technical solution and effects of the present invention will be described in detail below by way of specific embodiments with reference to the accompanying drawings.
As shown in FIG. 1, the GIS insulator heating aging test device comprises a hollow electrode 1, a basin-type insulator, a high-temperature oil storage tank 6, a low-temperature oil storage tank 14, an oil pump 13, a temperature control device 9, a temperature sensor 8 and a circular hollow groove 5, wherein the hollow electrode 1 is a hollow metal guide rod, two ends of the hollow electrode are provided with external threads, the basin-type insulator is provided with internal threads, the hollow electrode 1 is connected to two sides of the basin-type insulator through threads, and a shielding cover I2 is arranged at the joint of the hollow electrode 1 and the basin-type insulator; the upper end of the hollow electrode 1 above the basin-type insulator is connected with a high-voltage power supply, and a second shielding cover 3 is sleeved at the end part of the hollow electrode; the tail end of the hollow electrode 1 below the basin-type insulator is fixed on a supporting frame 15 through a supporting seat 12, and the supporting frame 15 is grounded. The basin-type insulator is characterized in that a low-voltage shielding cover 11 is fixed outside the basin-type insulator, and a circular hollow groove 5 is sleeved outside the low-voltage shielding cover 11. The cross section of the circular hollow groove 5 is semicircular.
The upper part and the lower part of the hollow electrode 1 are connected with a high-temperature fluid inlet pipe 10, wherein the upper part is arranged above the basin-type insulator, and the lower part is arranged below the basin-type insulator; the other end of the high-temperature fluid inlet and outlet pipe 10 is connected with the high-temperature oil storage tank 6, and the high-temperature fluid in the high-temperature oil storage tank 6 flows into the high-pressure hollow electrode 1 from the lower opening of the high-temperature oil storage tank 6 and flows out from the upper opening of the high-temperature oil storage tank 6. The pipe body of the high-temperature fluid inlet and outlet pipe 10 enters the hollow electrode 1, and the joint of the high-temperature fluid inlet and outlet pipe 10 and the hollow electrode 1 is sealed by sealant to ensure no leakage.
The circular hollow groove 5 is used for circulating the insulating oil, the oil flow is schematically shown in fig. 2, and fig. 2 is a top view with respect to fig. 1. The circular hollow groove 5 is adhered or welded on the outer side of the low-voltage shielding cover 11 and is positioned at the horizontal corresponding position of the basin-type insulator. The low-temperature fluid inlet and outlet pipes 4 are symmetrically connected to two sides of the circular hollow groove 5, two tail ends of the low-temperature fluid inlet and outlet pipes 4 are connected with the low-temperature oil storage tank 14, and the low-temperature fluid inlet and outlet pipes are heated only at the basin-type insulator to realize temperature matching during actual operation. The low-temperature fluid inlet and outlet pipe 4 is a hard pipe, is made of polytetrafluoroethylene, and is wrapped by rock wool.
A protection resistor is arranged between the high-voltage power supply and the hollow electrode 1.
Insulating oil, a heating device 7, a temperature sensor 8 and an oil pump 13 are arranged in the high-temperature oil storage tank 6 and the low-temperature oil storage tank 14, the heating device 7, the temperature sensor 8 and the oil pump 13 are connected with the temperature control device 9 through control wires, and the temperature control device 9 is connected with a PC through wireless communication, so that the whole temperature control system is monitored and controlled in real time. By using the PC to remotely control the temperature, the personal safety of personnel in the experimental process is ensured, and when the temperature exceeds the set highest temperature, an alarm can be sent.
The high-temperature oil storage tank 6 and the low-temperature oil storage tank 14 are made of polycarbonate PC plastic. The polycarbonate PC plastic is convenient to carry, easy to process and resistant to high temperature, and the working temperature is 20-100 ℃.
The heating device 7 comprises a resistance wire, which is an important part of the experimental platform.
The temperature sensor 8 is one of a thermocouple, a thermistor, a Resistance Temperature Detector (RTD), and an IC temperature sensor 8. The IC temperature sensor 8 includes both analog output and digital output types. The temperature sensor 8 in the embodiment is a thermistor, comprises metal oxide and ceramic, is the temperature sensor 8 with low cost and highest sensitivity, has the temperature measuring range of-50-200 ℃ and meets the design requirement; meanwhile, the thermistor has the advantages of small volume, quick response time and the like.
The high-temperature fluid inlet and outlet pipe 10 is a hard pipe, is made of polytetrafluoroethylene, and can bear the temperature of minus 60 ℃ to plus 260 ℃. The polytetrafluoroethylene material is selected to ensure that the high-voltage hollow electrode 1 is insulated from the outermost cylinder wall of the basin-type insulator, so that high-temperature fluid in the high-temperature oil storage tank 6 is convenient to heat the hollow electrode 1.
The low-voltage shielding case 11 is made of acrylic.
The supporting seat 12 is made of polytetrafluoroethylene insulating material and mainly aims to isolate and insulate the high-voltage hollow electrode 1.
The invention provides an insulator accelerated aging device capable of simulating an insulating material at high temperature and high pressure, which adopts an oil bath heating mode to accurately control the temperature of an experimental electrode, heats the insulator at a temperature higher than the actual working condition, and provides a reliable experimental foundation for various experiments after the accelerated aging of the insulator.
The method for carrying out the experiment by adopting the GIS insulator heating aging test device specifically comprises the following steps:
Step 1: fixing a basin-type insulator of a test piece on a test bed, fixing the insulator in a low-voltage shielding cover 11, and mounting hollow electrodes 1 at the upper end and the lower end of the insulator;
step 2, connecting a high-temperature fluid inlet and outlet pipe 10 with the hollow electrode 1, connecting a low-temperature fluid inlet and outlet pipe 4 with the electrode of the insulator, ensuring that insulating oil in the high-temperature oil storage tank 6 enters and exits from a lower port and an upper port, and ensuring that the interface between the high-temperature fluid inlet and outlet pipe 10 and the hollow electrode 1 is free from liquid leakage;
And 3, setting the temperature of oil in the high-temperature oil storage tank 6 and the low-temperature oil storage tank 14 on the temperature control device 9, wherein the temperature in the oil storage tank is 20-100 ℃, and the set temperature is the actual working temperature of the basin-type insulator. The heating device 7 is started to heat insulating oil in the high-temperature oil storage tank 6 and the low-temperature oil storage tank 14, and the oil in the oil storage tank is heated to a preset temperature, so that the temperature of the oil in the oil storage tank is ensured to maintain the required temperature.
Step 4: the oil pump 13 is started, and heated oil in the high-temperature oil storage tank 6 and the low-temperature oil storage tank 14 is continuously input into the hollow electrode 1 and the circular hollow groove 5 to heat the two ends of the insulator; the PC monitors the oil temperature in the oil storage tank and the working state of the oil pump 13 in real time.
Step 5: after the temperature of the insulator electrode is stable for 5 to 10 minutes, a high-voltage power supply connected with the two ends of the hollow guide rod is connected, and a step-up method is adopted to apply voltage to the two ends of the insulator of the test piece so as to achieve the rated working voltage of the insulator. The basin-type insulator is in an excessively high Wen Guoya working state for a long time, and aging of the insulator is accelerated.
Claims (7)
1. A GIS insulator heating ageing test device which is characterized in that: the device comprises a hollow electrode, a basin-type insulator, a high-temperature oil storage tank, a low-temperature oil storage tank, an oil pump, a temperature control device, a temperature sensor and a round hollow groove, wherein the hollow electrode is a hollow metal guide rod, both ends of the hollow electrode are provided with external threads, the basin-type insulator is provided with internal threads, and the hollow electrode is connected to both sides of the basin-type insulator through threads; a first shielding cover is arranged at the joint of the hollow electrode and the basin-type insulator; the upper end of the hollow electrode above the basin-type insulator is connected with a high-voltage power supply, and a second shielding cover is sleeved at the end part of the hollow electrode; the tail end of the hollow electrode below the basin-type insulator is fixed on the support frame through the support seat; the support frame is grounded; the outer part of the basin-type insulator is fixedly provided with a low-voltage shielding cover, and the circular hollow groove is sleeved outside the low-voltage shielding cover;
the upper part and the lower part of the hollow electrode are connected with high-temperature fluid inlet and outlet pipes, wherein the upper part is arranged above the basin-type insulator, and the lower part is arranged below the basin-type insulator; the other end of the high-temperature fluid inlet and outlet pipe is connected with a high-temperature oil storage tank;
the low-temperature fluid inlet and outlet pipes are symmetrically connected to two sides of the circular hollow groove, and two tail ends of the low-temperature fluid inlet and outlet pipes are connected with the low-temperature oil storage tank;
insulating oil, a heating device, a temperature sensor and an oil pump are arranged in the high-temperature oil storage tank and the low-temperature oil storage tank, the heating device, the temperature sensor and the oil pump are connected with the temperature control device through control wires, and the temperature control device is connected with the PC through wireless communication;
the cross section of the circular hollow groove is semicircular;
the high-temperature fluid in the high-temperature oil storage tank flows into the high-pressure hollow electrode from the lower port of the high-temperature oil storage tank and flows out from the upper port of the high-temperature oil storage tank;
the experimental method of the GIS insulator heating aging test device specifically comprises the following steps:
Step 1: fixing a basin-type insulator of a test piece on a test bed, fixing the insulator in a low-voltage shielding cover, and mounting hollow electrodes at the upper end and the lower end of the insulator;
Step 2: connecting a high-temperature fluid inlet and outlet pipe with a hollow electrode, connecting a low-temperature fluid inlet and outlet pipe with a low-temperature electrode of an insulator, ensuring that insulating oil in a high-temperature oil storage tank enters and exits from a lower port and an upper port, and ensuring that an interface between the high-temperature fluid inlet and outlet pipe and the hollow electrode is free from liquid leakage;
Setting the temperature of oil in a high-temperature oil storage tank and a low-temperature oil storage tank on a temperature control device, starting a heating device to heat insulating oil in the high-temperature oil storage tank and the low-temperature oil storage tank, and heating the oil in the oil storage tank to a preset temperature;
Step 4: starting an oil pump, continuously inputting heated oil in the high-temperature oil storage tank and the low-temperature oil storage tank into the hollow electrode and the round hollow groove, and heating two ends of the insulator; the PC monitors the oil temperature in the oil storage tank and the working state of the oil pump in real time;
Step 5: after the temperature of the insulator electrode is stable for 5 to 10 minutes, a high-voltage power supply connected with the two ends of the hollow guide rod is connected, a step-up method is adopted to apply voltage to the two ends of the insulator of the test piece, the rated working voltage of the insulator is reached, the basin-type insulator is in an excessively high Wen Guoya working state for a long time, and the aging of the insulator is accelerated.
2. The GIS insulator heating aging test device according to claim 1, wherein: the pipe body of the high-temperature fluid inlet and outlet pipe enters the hollow electrode, and the joint of the high-temperature fluid inlet and outlet pipe and the hollow electrode is sealed by sealant to ensure no leakage.
3. The GIS insulator heating aging test device according to claim 1, wherein: the circular hollow groove is adhered or welded on the outer side of the low-voltage shielding cover and is positioned at the horizontal corresponding position of the basin-type insulator.
4. The GIS insulator heating aging test device according to claim 1, wherein: the low-temperature fluid inlet and outlet pipe is a hard pipe, is made of polytetrafluoroethylene, and is wrapped by rock wool.
5. The GIS insulator heating aging test device according to claim 1, wherein: the high-temperature oil storage tank and the low-temperature oil storage tank are made of Polycarbonate (PC) plastic.
6. The GIS insulator heating aging test device according to claim 1, wherein: the heating device comprises a resistance wire.
7. The GIS insulator heating aging test device according to claim 1, wherein: the temperature sensor is one of a thermocouple, a thermistor, a resistance temperature detector and an IC temperature sensor.
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