CN102944782A - Insulating thermal stability test system - Google Patents
Insulating thermal stability test system Download PDFInfo
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- CN102944782A CN102944782A CN2012104403394A CN201210440339A CN102944782A CN 102944782 A CN102944782 A CN 102944782A CN 2012104403394 A CN2012104403394 A CN 2012104403394A CN 201210440339 A CN201210440339 A CN 201210440339A CN 102944782 A CN102944782 A CN 102944782A
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- pressure regulator
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- insulator
- thermal stability
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Abstract
The invention relates to the field of the insulating thermal stability test, and discloses an insulating thermal stability test system. The insulating thermal stability test system comprises a test transformer, a to-be-tested product and a current regulation part, wherein the current regulation part is respectively connected with the test transformer and the to-be-tested product. According to the insulating thermal stability test system provided by the invention, current required by the test can be flexibly regulated at will according to the requirement, thereby being very convenient, and the working efficiency of the test is greatly improved.
Description
Technical field
The present invention relates to the Insulation Thermal Stability Test field, particularly a kind of Insulation Thermal Stability Test system.
Background technology
Existing product Insulation Thermal Stability Test adopts current lifting device as the mode of regulating electric current more, and the parameter ratio of current lifting device is fixed, and be inconvenient to regulate, in case that the current lifting device ratio of selecting selects is little, just must change a larger current lifting device of ratio, the satisfied requirement of testing.Otherwise current lifting device ratio selects large, needs the string wire to reduce numerical value and reaches the requirement of satisfying test.Secondly, current lifting device must just can be regulated electric current when having a power failure, and inconvenience very greatly reduces the work efficiency of test.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of can be as required at any time, the required electric current of adjusting test easily, the Insulation Thermal Stability Test system that can increase work efficiency.
For solving the problems of the technologies described above, the invention provides a kind of Insulation Thermal Stability Test system, comprising: testing transformer, regulated part by trial product and electric current;
Described electric current regulate part by described shielded conductor respectively with described testing transformer, be connected by trial product.
Further, described electric current regulate part by shielded conductor respectively with described testing transformer, be connected by trial product; 2 crosslinked polyetylene insulated aluminium core single core cables of described shielded conductor employing penetrate in the aluminum foil shielded pipe and form.
Further, described electric current adjusting portion is divided and is comprised that large electric current pressure regulator, power supply, Optical Fiber Transmission partly reach be used to the control section of controlling large electric current pressure regulator voltage; Described large electric current pressure regulator is controlled power supply, described testing transformer, is connected by trial product with described pressure regulator respectively; Described large electric current pressure regulator is connected with described control section by described Optical Fiber Transmission part.
Further, described power supply comprises pressure regulator control power supply and/or accumulator.
Further, described Optical Fiber Transmission partly comprises shading ring, insulator, optical fiber and 485/ optic fiber converter; Described optical fiber is connected with described control section by described insulator, 485/ optic fiber converter successively; Described shading ring is enclosed within the outside of insulator.
Further, described insulator is the 250KV silicon rubber insulator, and described optical fiber is the multimode optical fiber tail optical fiber.
Further, described shading ring comprises the first shading ring, secondary shielding ring;
Described the first shading ring and described secondary shielding ring parallel sleeve are in the outside of described insulator.
Further, describedly comprised mutual inductor or sleeve pipe by trial product.
Insulation Thermal Stability Test provided by the invention system can directly regulate large electric current pressure regulator in the energising situation, has greatly improved the work efficiency of test.
Description of drawings
The structural representation of the Insulation Thermal Stability Test system that Fig. 1 provides for the embodiment of the invention.
The Insulation Thermal Stability Test schematic diagram that Fig. 2 provides for the embodiment of the invention.
Embodiment
A kind of Insulation Thermal Stability Test system that the embodiment of the invention provides comprises testing transformer, is regulated part by trial product and electric current.Electric current regulate part by shielded conductor respectively with testing transformer, be connected by trial product.Comprised mutual inductor or sleeve pipe etc. by trial product.
Referring to Fig. 1～2, the Insulation Thermal Stability Test system that the embodiment of the invention provides comprises that electric current is regulated part 10, testing transformer 20(can be 1500kVA), tested mutual inductor 30, shielded conductor; Electric current is regulated part 10 and is connected with 1500kVA testing transformer 20, tested mutual inductor 30 respectively by shielded conductor.2 crosslinked polyetylene insulated aluminium core single core cable JYLV-121*35 of shielded conductor employing penetrate in the aluminum foil shielded pipe and form, 10 kilovolts of its insulation, and allowing electric current is 100 peaces.
Electric current is regulated part 10 and is comprised large electric current pressure regulator 104, pressure regulator control power supply 101, Optical Fiber Transmission part, operation part and control section.Large electric current pressure regulator 104 is connected with pressure regulator control power supply 101,1500kVA testing transformer 20, tested mutual inductor 30 respectively.Control section and operation part are arranged on the operator's console, and control section is connected with large electric current pressure regulator 104 by the Optical Fiber Transmission part.Control section is provided with Programmable Logic Controller at hot end, can control large electric current pressure regulator 104 ascending, descendings.The high and low limit of lifting is directly by programmable controller program control, guarantee large electric current pressure regulator 104 up-flows before, one fixes on the lower bound position.Optical Fiber Transmission partly comprises optical fiber, 485/ optic fiber converter and insulator 103.Optical fiber is to use the multimode optical fiber buttock line.Insulator 103 outer setting have shielding ring set 102.Optical fiber connects ground operator's console by two 250KV silicon rubber insulators 103, has so both guaranteed the surface distance that insulate to guarantee again enough intensity.The control signal of sending of control section, at first convert fiber-optic signal to by 485/ optic fiber converter, then be transmitted through the fiber to large electric current pressure regulator 104, thereby control the control motor of large electric current pressure regulator 104, and then regulate the electric current lifting of large electric current pressure regulator 104.Operation part is an operation keyboard, mainly contains a control lever and a small displays composition that shows data.Control lever can operate the ascending, descending of large electric current pressure regulator 104.Display can show control voltage, DC voltage and spacing situation.
Pressure regulator control power supply 101(high potential power) be to realize by the transformer that a 1000VA is set, this transformer parameter is as follows: 10000V/60, and 120,180,240V(primary side 10000V, secondary side 60V, 120V, 180V, 240V is optional).Capacity 1000VA, this transformer can guarantee to satisfy the high potential power demand when high tension voltage rises to 1/4 rated voltage, export different voltage and can guarantee can both obtain required voltage under once different voltage.From the voltage that step down side obtains, certain value between overcommutation acquisition 40-60V(voltage 40V to 60V is so long as in this scope, just can give the charge in batteries of large electric current pressure regulator 10.) DC voltage supply with the inverter of a large electric current pressure regulator 10, and charge a battery, inverter output 220V AC power source of sine wave is supplied with the motor pressure regulation of large electric current pressure regulator 10 and is used.In the situation that does not have pressure regulator control power supply 101, accumulator can be for the inverter normal operation.The capacity 1000VA of inverter, accumulator are 48V.When using for the first time, can in situation about not adding high pressure, use the power supply of electronegative potential to charge in batteries.In order to guarantee the normal use of accumulator, can when accumulator does not use, be shut down by Programmable Logic Controller timing controlled accumulator.
The present invention has following requirement to the performance parameter of large electric current pressure regulator 10:
Single-phase: 50Hz;
Rated capacity: 500kVA;
Input voltage: 5000V, input current: 100A;
Output voltage: 0-100V, output current: 5000A;
Impedance voltage is less than 2.5%;
To product apply rated current and
KV voltage, Total Test will continue 36 hours at least, and pass through the dielectric loss bridge measurement once by trial product dielectric dissipation factor value every 1 hour, record simultaneously environment temperature, humidity and test product temperature.Um is highest voltage for equipment.
In last 8 hours of test, dielectric dissipation factor is in steady state (SS), illustrates that this product Insulation Thermal Stability Test is qualified, and draws dielectric dissipation factor-time curve.Continue to increase if dielectric dissipation factor prolongs in time, though test temperature is stable, even dielectric dissipation factor is a lot of above normal value, should end test, illustrates that this product Insulation Thermal Stability Test is defective.Take current transformer as example, the test circuit wiring diagram as shown in Figure 1.
Take the 765kV current transformer as example, apply 4000 amperes of rated current and 462kV voltage, at first, obtain the 10kV input voltage by large electric current pressure regulator 10, testing transformer 20 output secondarys will produce 1000kV voltage, need to obtain 462kV voltage now, so a, the b two ends have produced 4.62kV voltage, therefore, large electric current pressure regulator 10 primary sides input 4.62kV, secondary side produces the 0-100V adjustable voltage, and then control section is regulated the secondary side voltage of large electric current pressure regulator 10 by optical fiber, reach 4000 Ampere currents that tested mutual inductor is wanted, tested mutual inductor primary side above earth potential is 462kV voltage.
Utilize the Insulation Thermal Stability Test schematic diagram of pressure regulator adjusting electric current as shown in Figure 2.Testing transformer is divided into three grades altogether, every grade of output voltage 500kV, disconnect at the testing transformer secondary, voltage-to-ground 1000kV, extract the input end that 10kV is connected to large electric current pressure regulator at coil, take the 765kV current transformer as example, need to apply 4000 amperes of rated current and 462kV voltage, at first, obtain the 10kV input voltage by large electric current pressure regulator 10, testing transformer 20 output secondarys will produce 1000kV voltage, need to obtain 462kV voltage now, so a, the b two ends have produced 4.62kV voltage, therefore, and large electric current pressure regulator 10 primary sides input 4.62kV, secondary side produces the 0-100V adjustable voltage, then regulate large electric current pressure regulator 10 secondary side voltages by control section by optical fiber, reach 4000 Ampere currents that tested mutual inductor is wanted, tested mutual inductor primary side above earth potential is 462kV voltage.
Traditional Insulation Thermal Stability Test schematic diagram that utilizes current lifting device to regulate electric current is exactly to change the large electric current pressure regulator among Fig. 2 into current lifting device.Regulate electric current with pressure regulator and compare, current lifting device cannot chargedly be regulated, and numerical value is difficult to select accurately simultaneously.This shows that electric current pressure regulator provided by the invention can realize charged adjusting, numerical value is easy to select accurately simultaneously.
Insulation Thermal Stability Test provided by the invention system has following beneficial effect:
1. adopt pressure regulator to regulate current system as the High-Voltage Insulation heat stabilization test, range of adjustment is wide, can charged adjusting electric current, improved the work efficiency of test.
2. the parameter of pressure regulator is more flexible, is convenient to regulate, and has overcome when using current lifting device to fix the problem of frequently following exchange device or series conductor because of parameter.
3. adopt the Optical Fiber Transmission control signal, guaranteed operating personnel's safety.
4. control section adopts Programmable Logic Controller, and is easy to operate, realized the convenience of experiment.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in claim scope of the present invention.
Claims (8)
1. an Insulation Thermal Stability Test system is characterized in that, comprising: testing transformer, regulated part by trial product and electric current;
Described electric current is regulated part respectively with described testing transformer, be connected by trial product.
2. system according to claim 1 is characterized in that:
Described electric current regulate part by shielded conductor respectively with described testing transformer, be connected by trial product; 2 crosslinked polyetylene insulated aluminium core single core cables of described shielded conductor employing penetrate in the aluminum foil shielded pipe and form.
3. system according to claim 1 is characterized in that, described electric current adjusting portion is divided and comprised:
Large electric current pressure regulator, power supply, Optical Fiber Transmission partly reach be used to the control section of controlling large electric current pressure regulator voltage;
Described large electric current pressure regulator is controlled power supply, described testing transformer, is connected by trial product with described pressure regulator respectively;
Described large electric current pressure regulator is connected with described control section by described Optical Fiber Transmission part.
4. system according to claim 3 is characterized in that, described power supply comprises:
Pressure regulator control power supply and/or accumulator.
5. system according to claim 3 is characterized in that, described Optical Fiber Transmission partly comprises:
Shading ring, insulator, optical fiber and 485/ optic fiber converter;
Described optical fiber is connected with described control section by described insulator, 485/ optic fiber converter successively; Described shading ring is enclosed within the outside of insulator.
6. system according to claim 5 is characterized in that:
Described insulator is the 250KV silicon rubber insulator, and described optical fiber is the multimode optical fiber tail optical fiber.
7. system according to claim 5 is characterized in that, described shading ring comprises:
The first shading ring, secondary shielding ring;
Described the first shading ring and described secondary shielding ring parallel sleeve are in the outside of described insulator.
8. each described system according to claim 1-7 is characterized in that:
Describedly comprised mutual inductor or sleeve pipe by trial product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210440339.4A CN102944782B (en) | 2012-11-07 | 2012-11-07 | Insulation Thermal Stability Test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440339.4A CN102944782B (en) | 2012-11-07 | 2012-11-07 | Insulation Thermal Stability Test system |
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| CN102944782A true CN102944782A (en) | 2013-02-27 |
| CN102944782B CN102944782B (en) | 2016-09-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000081401A (en) * | 1998-09-07 | 2000-03-21 | Hitachi Ltd | Deterioration diagnostic method for organic insulating material |
| JP2008082904A (en) * | 2006-09-28 | 2008-04-10 | Fuji Electric Systems Co Ltd | Partial discharge measuring device |
| CN201259641Y (en) * | 2008-09-02 | 2009-06-17 | 江苏西贝电子网络有限公司 | Intelligent electricity supplier |
| CN201820628U (en) * | 2010-06-10 | 2011-05-04 | 中国西电电气股份有限公司 | Electronic current and voltage transformer |
| CN102645596A (en) * | 2012-04-11 | 2012-08-22 | 中国电力科学研究院 | High-voltage and high-current composite thermally stable test method and device for high-voltage casing pipe |
| CN102735977A (en) * | 2012-07-12 | 2012-10-17 | 四川大学 | Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof |
-
2012
- 2012-11-07 CN CN201210440339.4A patent/CN102944782B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000081401A (en) * | 1998-09-07 | 2000-03-21 | Hitachi Ltd | Deterioration diagnostic method for organic insulating material |
| JP2008082904A (en) * | 2006-09-28 | 2008-04-10 | Fuji Electric Systems Co Ltd | Partial discharge measuring device |
| CN201259641Y (en) * | 2008-09-02 | 2009-06-17 | 江苏西贝电子网络有限公司 | Intelligent electricity supplier |
| CN201820628U (en) * | 2010-06-10 | 2011-05-04 | 中国西电电气股份有限公司 | Electronic current and voltage transformer |
| CN102645596A (en) * | 2012-04-11 | 2012-08-22 | 中国电力科学研究院 | High-voltage and high-current composite thermally stable test method and device for high-voltage casing pipe |
| CN102735977A (en) * | 2012-07-12 | 2012-10-17 | 四川大学 | Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈昌顺 等: "330、500kV变压器套管热稳定性能试验", 《变压器》, vol. 37, no. 7, 31 July 2000 (2000-07-31), pages 30 - 31 * |
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| CN102944782B (en) | 2016-09-21 |
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Address after: 110122 No. 20-1, Hushitai South Street, shenbeixin District, Shenyang City, Liaoning Province (all) Patentee after: Shenyang Transformer Research Institute Co.,Ltd. Address before: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 39 Patentee before: SHENYANG TRANSFORMER RESEARCH INSTITUTE Co.,Ltd. |