CN102944782B - Insulation Thermal Stability Test system - Google Patents
Insulation Thermal Stability Test system Download PDFInfo
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- CN102944782B CN102944782B CN201210440339.4A CN201210440339A CN102944782B CN 102944782 B CN102944782 B CN 102944782B CN 201210440339 A CN201210440339 A CN 201210440339A CN 102944782 B CN102944782 B CN 102944782B
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Abstract
The present invention relates to Insulation Thermal Stability Test field, disclose a kind of Insulation Thermal Stability Test system and include: testing transformer, regulated part by trial product and electric current；Described electric current regulation part respectively with described testing transformer, be connected by trial product.The Insulation Thermal Stability Test system that the present invention provides, it is possible to regulate the required electric current of test the most at any time, flexibly, very convenient, substantially increase the work efficiency of test.
Description
Technical field
The present invention relates to Insulation Thermal Stability Test field, particularly to a kind of Insulation Thermal Stability Test system.
Background technology
Existing product Insulation Thermal Stability Test many employings current lifting device is as the mode of regulation electric current, up-flow
The aspect ratio of device is fixed, it has not been convenient to regulation, the current lifting device of selection once ratio selects little, is necessary for
Change a bigger current lifting device of ratio, meet the requirement of test.Otherwise, current lifting device ratio selects big,
String wire is needed to reach to meet the requirement of test to reduce numerical value.Secondly, current lifting device must be in power failure
Time just can be adjusted electric current, inconvenience very, greatly reduce the work efficiency of test.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can the most at any time, regulate easily
The required electric current of test, it is possible to increase the Insulation Thermal Stability Test system of work efficiency.
For solving above-mentioned technical problem, the invention provides a kind of Insulation Thermal Stability Test system, including:
Testing transformer, regulated part by trial product and electric current；
Described electric current regulation part by described shielded conductor respectively with described testing transformer, test-manufactured
Product connect.
Further, described electric current regulation part by shielded conductor respectively with described testing transformer,
Connected by trial product；Described shielded conductor uses 2 crosslinked polyetylene insulated aluminum core single-core cables to penetrate
Aluminum foil shielded pipe forms.
Further, described electric current regulation part includes that big electric current pressure regulator, power supply, optical fiber pass
Defeated part and for controlling the control part of big electric current pressure regulator voltage；Described big electric current pressure regulator is respectively
Control power supply, described testing transformer with described pressure regulator, be connected by trial product；Described big electric current is adjusted
Depressor is connected with the described part that controls by described fibre transmission portions.
Further, described power supply includes that pressure regulator controls power supply and/or accumulator.
Further, described fibre transmission portions includes shading ring, insulator, optical fiber and 485/ optical fiber
Transducer；Described optical fiber passes sequentially through described insulator, 485/ optic fiber converter and described control part
Connect；Described shading ring is enclosed within the outside of insulator.
Further, described insulator is 250KV silicon rubber insulator, and described optical fiber is multimode fibre
Tail optical fiber.
Further, described shading ring includes the first shading ring, secondary shielding ring；
Described first shading ring and described secondary shielding ring parallel sleeve are in the outside of described insulator.
Further, described transformer or sleeve pipe are included by trial product.
The Insulation Thermal Stability Test system that the present invention provides, can be in the case of energising, to big electric current pressure regulation
Device is directly adjusted, and substantially increases the work efficiency of test.
Accompanying drawing explanation
The structural representation of the Insulation Thermal Stability Test system that Fig. 1 provides for the embodiment of the present invention.
The Insulation Thermal Stability Test schematic diagram that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
A kind of Insulation Thermal Stability Test system that the embodiment of the present invention provides, including testing transformer, quilt
Trial product and electric current regulation part.Electric current regulation part by shielded conductor respectively with testing transformer,
Connected by trial product.Transformer or sleeve pipe etc. is included by trial product.
See Fig. 1～2, the Insulation Thermal Stability Test system that the embodiment of the present invention provides, adjust including electric current
Joint part 10, testing transformer 20 (can be 1500kVA), tested transformer 30, shielded conductor
40；Electric current regulation part 10 by shielded conductor 40 respectively with 1500kVA testing transformer 20, quilt
Examination transformer 30 connects.Shielded conductor 40 uses 2 crosslinked polyetylene insulated aluminum core single-core cables
JYLV-121*35 penetrates in aluminum foil shielded pipe and forms, its insulation 10 kilovolts, it is allowed to electric current is 100 peaces.
Electric current regulation part 10 includes that big electric current pressure regulator 104, pressure regulator control power supply 101, optical fiber
Hop, operation part and control part.Big electric current pressure regulator 104 controls electricity with pressure regulator respectively
Source 101,1500kVA testing transformer 20, tested transformer 30 connect.Control part and operating portion
Divide and be arranged on operating board, control part and be connected with big electric current pressure regulator 104 by fibre transmission portions.
Control part at hot end, be provided with Programmable Logic Controller, can control big electric current pressure regulator 104 liters,
Fall.The high and low limit of lifting is directly by programmable controller program control, it is ensured that big electric current pressure regulator
Before 104 up-flows, one is scheduled on lower bound position.Fibre transmission portions include optical fiber, 485/ optic fiber converter and
Insulator 103.Optical fiber is to use multimode fibre buttock line.Insulator 103 is outside is provided with shielding ring set 102.
Optical fiber connects ground operating board by two 250KV silicon rubber insulators 103, the most both ensures
The surface distance of insulation, ensures again enough intensity.The control signal sent of control part, first
It is converted into fiber-optic signal by 485/ optic fiber converter, is then transmitted through the fiber to big electric current pressure regulator
104, thus control the control motor of big electric current pressure regulator 104, and then regulate big electric current pressure regulator 104
Slope.Operation part is an operation keyboard, mainly has an action bars and a display number
According to small displays composition.Action bars can operate the ascending, descending of big electric current pressure regulator 104.Display
Control voltage, DC voltage and spacing situation can be shown.
It is the transformator by arranging a 1000VA that pressure regulator controls power supply 101 (high potential power)
Realizing, this transformer parameter is as follows: 10000V/60,120,180,240V (primary side 10000V,
Secondary side 60V, 120V, 180V, 240V are optional).Capacity 1000VA, this transformator can be protected
Card, when high tension voltage rises to 1/4 rated voltage, meets high potential power demand, exports different electricity
Pressure can ensure that and can obtain required voltage under the most different voltage.Obtain from step down side
The voltage arrived, through over commutation obtain 40-60V (certain value between voltage 40V to 60V, as long as
In the range of this, just can give the accumulator charging of big electric current pressure regulator 10.) DC voltage supply
The inverter of one big electric current pressure regulator 10, and charge a battery, output 220V is sinusoidal for inverter
Alternating current wave source supplies the motor pressure regulation of big electric current pressure regulator 10 and uses.Power supply is controlled there is no pressure regulator
In the case of 101, accumulator is available for inverter and normally works.The capacity 1000VA of inverter, electric power storage
Pond is 48V.The power supply of electronegative potential can be used in the case of not adding high pressure to storage when using for the first time
Battery charges.In order to ensure the normal use of accumulator, can be when accumulator use, by able to programme
Controller timing controlled accumulator is shut down.
The performance parameter of big electric current pressure regulator 10 is had claimed below by the present invention:
Single-phase: 50Hz；
Rated capacity: 500kVA；
Input voltage: 5000V, input current: 100A；
Output voltage: 0-100V, exports electric current: 5000A；
Impedance voltage is less than 2.5%；
To product apply rated current andVoltage, total Test at least to continue 36 hours,
And passed through dielectric loss bridge measurement every 1 hour once by trial product dielectric dissipation factor value, record simultaneously
Ambient temperature, humidity and test product temperature.Um is highest voltage for equipment.
In last 8 hours of test, dielectric dissipation factor is in steady statue, illustrates that this product insulate
Heat stabilization test is qualified, and draws dielectric dissipation factor-time graph.If dielectric dissipation factor is at any time
Between extend and persistently increase, though test temperature is the most stable, even to exceed normal value a lot of for dielectric dissipation factor,
Test should be stopped, illustrate that this product Insulation Thermal Stability Test is defective.As a example by current transformer, examination
Test connections figure as shown in Figure 1.
As a example by 765kV current transformer, apply rated current 4000 amperes and 462kV voltage, first
First, logical super-high-current pressure regulator 10 obtains 10kV input voltage, and testing transformer 20 exports two grades will
Produce 1000kV voltage, it is now desired to obtain 462kV voltage, so a, b two ends create 4.62kV
Voltage, therefore, big electric current pressure regulator 10 primary side input 4.62kV, secondary side produces 0-100V can
Adjust voltage, then control part and regulated the secondary side voltage of big electric current pressure regulator 10 by optical fiber, reach
4000 Ampere currents that tested transformer is wanted, tested transformer primary side above earth potential is 462kV
Voltage.
Utilize the Insulation Thermal Stability Test schematic diagram of pressure regulator regulation electric current as shown in Figure 2.Test transformation
Device is always divided into three grades, every grade of output voltage 500kV, in testing transformer two grades disconnection, and electricity over the ground
Pressure 1000kV, extracts 10kV on coil and is connected to the input of big electric current pressure regulator, with 765kV
As a example by current transformer, need to apply rated current 4000 amperes and 462kV voltage, first, pass through
Big electric current pressure regulator 10 obtains 10kV input voltage, and testing transformer 20 exports two grades and will produce
1000kV voltage, it is now desired to obtain 462kV voltage, so a, b two ends create 4.62k electricity
Pressure, therefore, big electric current pressure regulator 10 primary side input 4.62kV, it is adjustable that secondary side produces 0-100V
Voltage, then by control part regulate big electric current pressure regulator 10 secondary side voltage by optical fiber, reach by
4000 Ampere currents that examination transformer is wanted, tested transformer primary side above earth potential is 462kV voltage.
Traditional utilizes the Insulation Thermal Stability Test schematic diagram of current lifting device regulation electric current by Fig. 2
Big electric current pressure regulator changes current lifting device into.Compared with pressure regulator regulation electric current, current lifting device cannot charged be adjusted
Joint, numerical value is difficult to select accurately simultaneously.The electric current pressure regulator that the present invention provides as can be seen here can realize band
Electricity regulation, numerical value is easy to select accurately simultaneously.
The Insulation Thermal Stability Test system that the present invention provides has the advantages that
1. using pressure regulator to regulate current system as High-Voltage Insulation heat stabilization test, range of accommodation is wide,
Can charged regulation electric current, improve the work efficiency of test.
2. the parameter of pressure regulator is more flexible, it is simple to regulation, overcomes when using current lifting device because of parameter
Fixing and frequently with exchange device or the problem of series conductor.
3. use fiber-optic transfer control signal, it is ensured that the safety of operator.
4. control part and use Programmable Logic Controller, easy to operate, it is achieved that the convenience of experiment.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme
And unrestricted, although the present invention being described in detail with reference to example, the ordinary skill people of this area
Member should be appreciated that and can modify technical scheme or equivalent, without deviating from
The spirit and scope of technical solution of the present invention, it all should be contained in scope of the presently claimed invention.
Claims (3)
1. an Insulation Thermal Stability Test system, electric current regulation part the most respectively with testing transformer, tested
Product connect, big electric current pressure regulator respectively with testing transformer, be connected by trial product, it is characterised in that
Including: testing transformer and electric current regulation part；
Fibre transmission portions includes shading ring, insulator, optical fiber and 485/ optic fiber converter；
Described optical fiber passes sequentially through described insulator, 485/ optic fiber converter and is connected with controlling part；Institute
State shading ring and be enclosed within the outside of insulator；The described part that controls, at hot end, is provided with PLC technology
Device, can control big electric current pressure regulator ascending, descending, it is ensured that big electric current pressure regulator up-flow is previous be scheduled on low spacing；
Described electric current regulation part includes big electric current pressure regulator, power supply, fibre transmission portions and use
In the control part controlling big electric current pressure regulator voltage；Described big electric current pressure regulator controls electricity with pressure regulator
Source connects；Described big electric current pressure regulator is connected with the described part that controls by described fibre transmission portions；
Described power supply includes that pressure regulator controls power supply and/or accumulator；
Described insulator is 250KV silicon rubber insulator, and described optical fiber is multimode fibre tail optical fiber；Described
Shading ring includes the first shading ring, secondary shielding ring；Described first shading ring and described secondary shielding ring
Parallel sleeve is in the outside of described insulator.
System the most according to claim 1, it is characterised in that:
Described electric current regulation part by shielded conductor respectively with described testing transformer, by trial product even
Connect；Described shielded conductor uses 2 crosslinked polyetylene insulated aluminum core single-core cables to penetrate aluminum foil shielded pipe
Middle composition.
3. according to the system described in any one of claim 1-2, it is characterised in that:
Described included transformer or sleeve pipe by trial product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440339.4A CN102944782B (en) | 2012-11-07 | 2012-11-07 | Insulation Thermal Stability Test system |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
|---|---|
| CN102944782A CN102944782A (en) | 2013-02-27 |
| CN102944782B true CN102944782B (en) | 2016-09-21 |
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| CN201210440339.4A Active CN102944782B (en) | 2012-11-07 | 2012-11-07 | Insulation Thermal Stability Test system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201259641Y (en) * | 2008-09-02 | 2009-06-17 | 江苏西贝电子网络有限公司 | Intelligent electricity supplier |
| 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 |
Family Cites Families (3)
| 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 |
| JP4840050B2 (en) * | 2006-09-28 | 2011-12-21 | 富士電機株式会社 | Partial discharge measuring device |
| 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 |
-
2012
- 2012-11-07 CN CN201210440339.4A patent/CN102944782B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201259641Y (en) * | 2008-09-02 | 2009-06-17 | 江苏西贝电子网络有限公司 | Intelligent electricity supplier |
| 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 |
|---|
| 330、500kV变压器套管热稳定性能试验;陈昌顺 等;《变压器》;20000731;第37卷(第7期);30-31 * |
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| CN102944782A (en) | 2013-02-27 |
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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. |