CN105717334A - Simple high voltage and heavy current generation system for cables - Google Patents
Simple high voltage and heavy current generation system for cables Download PDFInfo
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- CN105717334A CN105717334A CN201610057493.1A CN201610057493A CN105717334A CN 105717334 A CN105717334 A CN 105717334A CN 201610057493 A CN201610057493 A CN 201610057493A CN 105717334 A CN105717334 A CN 105717334A
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- cable
- voltage
- loop
- power
- high voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a simple high voltage and heavy current generation system for cables. A power control box is connected with a transformer via a multi-core shielding cable, and the power control box is internally provided with overvoltage protection, overcurrent protection and voltage regulation devices; the power control box controls output voltage of the transformer and collects and displays the output voltage, the output end of the transformer is connected with cable cores via a protective resistor; a voltage regulator, a circuit breaker, an inductive coil and a large-power protective resistor are connected successively to form a primary loop, and the cable penetrates the inductive coil to form a secondary loop; the two ends of the voltage regular is connected with a voltmeter, and the primary loop is connected with the ammeter in series; the secondary loop uses a clip on ammeter for measurement; and the cable is shorted during operation of the system, and the contact resistance is low. According to the system, a relatively simpler circuit is used to generate heavy current in the cable loop, a high voltage generation loop is used to apply high voltage to the cable cores, practical operation condition of the cable is simulated effectively, and reference is provided for research on electric and thermal aging of cable insulation in labs.
Description
Technical field
The present invention relates to a kind of big electrical current generation system, it is mainly used in electricity, heat ageing that dummycable and cable accessory cause due to core electric current and voltage in running, it is adaptable to insulant and the electricity of related accessories, heat ageing rule in experiment desk research cable actual moving process.
Background technology
Cable, as important power equipment, has application more in each power industry.Cable can be subject to the impact of the many factors such as electricity, heat, machinery in running, and Qi Zhong electricity, heat ageing are comparatively serious on the impact of fixing cable insulation, have been also affected by paying close attention to of each research structure.At present, in cable thermal aging test process, cable is heated applied voltage test at baking oven by the many employings of laboratory.This is slightly not enough in insulation ag(e)ing, status monitoring etc. under research cable practical operation situation.
Summary of the invention
The technical problem to be solved is the subject matter in the true ageing state of current dummycable, including:
(1) convection oven is aging is that overall chamber is heated by external heat source, and temperature transmits from outside to inside, and thermograde and diabatic process are all otherwise varied with the truth of cable.
(2) carry out in baking oven electricity, heat simultaneously aging time, cable security performance is poor, is unfavorable for the real-time monitoring of personnel.
A kind of simple system design of cable high-voltage great-current, this system mainly includes two big technology contents:
(1) big electric current generation technique, can produce sufficiently large electric current at cable loop in theory.
(2) high-pressure technique, output voltage waveforms is steady, and amplitude stability uses safety.
Technical scheme:
A kind of cable high-voltage great-current generation simple system, including high pressure generating loop and big electric current generating loop two parts；
High pressure generating loop includes power controling box and transformator, adopts shielded multiconductor cable to be connected, have overvoltage protection, overcurrent protection and regulator in power controling box between power controling box with transformator.Power controling box controls transformer output voltage and output voltage is acquired display.The outfan of transformator is connected with cable core by protective resistance.
Big electric current generating loop includes pressure regulator, inductance coil, cable and high-power protective resistance；Pressure regulator, chopper, inductance coil and high-power protective resistance are sequentially connected composition primary circuit, and cable constitutes secondary circuit through inductance coil；Pressure regulator two ends connect voltmeter, primary circuit concatenation ammeter；Secondary circuit adopts clamp on amperemeter to measure；When system is run, cable carries out short circuit, and contact resistance is little.
Beneficial effects of the present invention: cable high-voltage great-current generation simple system can utilize relatively simple circuit, cable loop produces big electric current, utilize high pressure generating loop to apply high pressure to cable core simultaneously, the practical operation situation of dummycable comparatively truly, provides a kind of reference unit for the experiment electricity of desk research cable insulation, heat ageing.
Accompanying drawing explanation
Accompanying drawing is the simple and easy generation systems circuit diagram of cable high-voltage great-current.
In figure: 1 power controling box；2 transformators；3 protective resistances；4 inductance coils；5 high-power protective resistances；6 pressure regulators；7 choppers；8 cables；9 earth terminals.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with accompanying drawing and technical scheme.
Accompanying drawing is the simple and easy generation systems circuit diagram of cable high-voltage great-current.Power controling box can realize continuously adjusting of transformer voltage, is monitored the voltage of outfan in real time by sampling resistor, is provided with over-voltage over-current protection inside power controling box.Transformator output termination protective resistance, it is prevented that transformator is caused damage by cable shorted to earth.In cable, each core except wire core carries out corresponding short circuit, constitutes closed-loop path, and wire core separates independent grounding (wire core is short circuit not), and cable is through the inside of inductance coil.Inductance coil is according to the different model of the different choice of size of current needed for cable, and inductance coil primary side connects high-power protective resistance, installs chopper additional simultaneously, protects primary circuit.Inductive current is adjusted by pressure regulator, and pressure regulator input connects 220V civil power.
Claims (1)
1. a cable high-voltage great-current generation simple system, it is characterised in that this cable high-voltage great-current generation simple system includes high pressure generating loop and big electric current generating loop two parts；
High pressure generating loop includes power controling box and transformator, adopts shielded multiconductor cable to be connected, be provided with overvoltage protection, overcurrent protection and regulator in power controling box between power controling box with transformator；Power controling box controls transformer output voltage and output voltage is acquired display, and the outfan of transformator is connected with cable core by protective resistance；
Big electric current generating loop includes pressure regulator, inductance coil, cable and high-power protective resistance；Pressure regulator, chopper, inductance coil and high-power protective resistance are sequentially connected composition primary circuit, and cable constitutes secondary circuit through inductance coil；Pressure regulator two ends connect voltmeter, primary circuit concatenation ammeter；Secondary circuit adopts clamp on amperemeter to measure；When system is run, cable carries out short circuit, and contact resistance is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610057493.1A CN105717334A (en) | 2016-01-27 | 2016-01-27 | Simple high voltage and heavy current generation system for cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610057493.1A CN105717334A (en) | 2016-01-27 | 2016-01-27 | Simple high voltage and heavy current generation system for cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105717334A true CN105717334A (en) | 2016-06-29 |
Family
ID=56155294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610057493.1A Pending CN105717334A (en) | 2016-01-27 | 2016-01-27 | Simple high voltage and heavy current generation system for cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105717334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199095A (en) * | 2016-07-25 | 2016-12-07 | 大连华锐重工集团股份有限公司 | Double-feed current transformer formula high-current generation device |
| CN109738764A (en) * | 2019-03-08 | 2019-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of cable slack layer test device and test method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN202794367U (en) * | 2012-07-12 | 2013-03-13 | 重庆市电力公司永川供电局 | Electrothermal aging test device of cross-linked polyethylene cable accessory |
| CN202794368U (en) * | 2012-07-12 | 2013-03-13 | 重庆市电力公司永川供电局 | High frequency and high voltage-large current experimental device for simulating real harmonic of power grid |
| CN103323700A (en) * | 2013-05-24 | 2013-09-25 | 国家电网公司 | High-temperature superconducting cable alternating current tolerance testing system and method |
| CN204008750U (en) * | 2014-08-22 | 2014-12-10 | 西安福润德电子科技有限公司 | A kind of light-duty two-box type multifunctional high pressure source |
| CN105182017A (en) * | 2015-09-23 | 2015-12-23 | 中国人民解放军理工大学 | 2000V voltage generating high voltage generation circuit system used for detecting SPD |
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
-
2016
- 2016-01-27 CN CN201610057493.1A patent/CN105717334A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202794367U (en) * | 2012-07-12 | 2013-03-13 | 重庆市电力公司永川供电局 | Electrothermal aging test device of cross-linked polyethylene cable accessory |
| CN202794368U (en) * | 2012-07-12 | 2013-03-13 | 重庆市电力公司永川供电局 | High frequency and high voltage-large current experimental device for simulating real harmonic of power grid |
| CN103323700A (en) * | 2013-05-24 | 2013-09-25 | 国家电网公司 | High-temperature superconducting cable alternating current tolerance testing system and method |
| CN204008750U (en) * | 2014-08-22 | 2014-12-10 | 西安福润德电子科技有限公司 | A kind of light-duty two-box type multifunctional high pressure source |
| CN105203809A (en) * | 2014-08-30 | 2015-12-30 | 扬州市鑫源电气有限公司 | Test power supply apparatus of alternating current and direct current pollution test |
| CN105182017A (en) * | 2015-09-23 | 2015-12-23 | 中国人民解放军理工大学 | 2000V voltage generating high voltage generation circuit system used for detecting SPD |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199095A (en) * | 2016-07-25 | 2016-12-07 | 大连华锐重工集团股份有限公司 | Double-feed current transformer formula high-current generation device |
| CN109738764A (en) * | 2019-03-08 | 2019-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of cable slack layer test device and test method |
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Application publication date: 20160629 |