CN104569767A - Leakage current signal acquisition system of insulator - Google Patents
Leakage current signal acquisition system of insulator Download PDFInfo
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- CN104569767A CN104569767A CN201510030732.XA CN201510030732A CN104569767A CN 104569767 A CN104569767 A CN 104569767A CN 201510030732 A CN201510030732 A CN 201510030732A CN 104569767 A CN104569767 A CN 104569767A
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- insulator
- leakage current
- current signal
- power module
- resistance
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Abstract
The invention discloses a leakage current signal acquisition system of an insulator. The leakage current signal acquisition system comprises a power module, the insulator, a mist room, a detection resistor and a collection device. The insulator is arranged in the mist room. The output end of the power module is sequentially connected with the insulator and the detection resistor in series. The collection device is connected with the two ends of the detection resistor in parallel and can acquire the voltage values of the two ends of the resistor. The leakage current signal acquisition system simulates the humidity of various external operating environments of the insulator, the collection device acquires the voltage of the two ends of the detection resistor in different operating environment humidity to reflect the current leakage condition of the insulator, and therefore reliable evidences can be provided for reflecting the insulating property of the insulator.
Description
Technical field
The present invention relates to a kind of insulator Leakage Current signal and measure system.
Background technology
Rarefaction of air on high mountain, fog is large sooner or later, and on high mountain, the insulating property of the insulator that the insulating property of the insulator that transmission line of electricity hangs hang compared with transmission line of electricity on level land are low.If the outer surface of insulator dust stratification that on high mountain, transmission line of electricity hangs is serious, under the effect of fog condensation, the thin fluid capacitance under water of outer surface of insulator easily causes insulator dielectric hydraulic performance decline, insulator dielectric can be caused to puncture, cause transmission line of electricity short circuit trip accident time serious.Therefore, develop a kind of insulator Leakage Current signal and measure system, the insulator dielectric performance under the different running environment humidity of accurate analysis, for diagnostic analysis insulator dielectric performance provides reliable basis to have very important practical engineering value.
Summary of the invention
The invention provides a kind of insulator Leakage Current signal and measure system, which overcome the deficiencies in the prior art described in background technology.
The technical solution adopted for the present invention to solve the technical problems is:
Insulator Leakage Current signal measures system, it comprises power module, insulator, moist chambers, detection resistance and harvester, this insulator is placed in this moist chambers, the output terminal of this power module is connected in series this insulator successively and detects resistance, this harvester also connects the magnitude of voltage that these detection resistance two ends also can obtain these resistance two ends, obtains Leakage Current and the insulating property of this insulator by analyzing this magnitude of voltage.
Among one embodiment: this power module comprises a pressure regulator and transformer, the input termination low-tension supply of this pressure regulator exports, the primary side of the output termination transformer of this pressure regulator, and the secondary side of this transformer is as the output terminal of this power module.
Among one embodiment: also comprise a capacitive divider and measurement mechanism, this capacitive divider can be attempted by the output terminal of this power module, measurement mechanism connects this capacitive divider and can obtain and show the partial pressure value on this capacitive divider, is obtained the output voltage of this power module by this partial pressure value.
Among one embodiment: also comprise a protective resistance, this protective resistance is serially connected in the cathode output end of this power module.
Among one embodiment: be provided with a wall bushing, this wall bushing is fixed on this fog locular wall, and the serial connection wire be arranged in outside this moist chambers is passed by this wall bushing and connects the insulator of moist chambers.
Among one embodiment: this measurement mechanism is voltage table.
Among one embodiment: this wall bushing is porcelain bushing, hollow columnar.
The technical program is compared with background technology, and its tool has the following advantages:
Insulator Leakage Current signal measures system and comprises power module, insulator, moist chambers, detect resistance and harvester, this insulator is placed in this moist chambers, the output terminal of this power module is connected in series this insulator successively and detects resistance, this harvester also connects the magnitude of voltage that these detection resistance two ends also can obtain these resistance two ends, the various extraneous running environment humidity condition of analog insulation of the present invention, the voltage at the detection resistance two ends obtained under different running environment humidity by this harvester reflects this insulator leakage of current situation, and then for reflecting that the insulating property of this insulator provide reliable basis.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 depicts the circuit system figure that insulator Leakage Current signal of the present invention measures system.
Embodiment
Please refer to Fig. 1, insulator Leakage Current signal measures system, and it comprises power module 10, insulator 20, moist chambers 30, detects resistance 40, harvester 50, capacitive divider 60, measurement mechanism 70 and protective resistance 80.
This power module 10 comprises a pressure regulator 11 and transformer 12, the input termination low-tension supply (380V AC power) of this pressure regulator 11 exports, the primary side of the output termination transformer 12 of this pressure regulator 11, the secondary side of this transformer 12 is as the output terminal of this power module 10.
This insulator 20 is placed in this moist chambers, the output terminal of this power module 10 is connected in series this insulator 20 successively and detects resistance 40, this harvester 50 also connects the magnitude of voltage that these detection resistance 40 two ends also can obtain these resistance 40 two ends, this magnitude of voltage equals insulator 20 Leakage Current and the product detecting resistance 40 resistance, and harvester 50 analyzes insulator 20 Leakage Current composition by the voltage component analyzing these detection resistance 40 two ends.This capacitive divider 60 can be attempted by the output terminal of this power module 10, and measurement mechanism 70 connects the centre tap of this capacitive divider 60 and can obtain and show the partial pressure value on this capacitive divider 60.In the present embodiment, this measurement mechanism 70 is voltage table, by the output voltage of this power module 10 of displayed value real time monitoring of this voltage table, in practical application, voltage table voltage can be obtained the voltage of this transformer 12 high-pressure side output terminal divided by this capacitive divider 60 intrinsic standoff ratio, and pressure regulator 11 can be regulated according to this voltage table displayed value, thus change the output voltage of power module 10.
This protective resistance 80 is serially connected in the cathode output end of this power module 10, and when this protective resistance 80 two ends institute making alive is greater than its rated withstand voltage, this protective resistance 80 will fuse, and is kept apart in insulator 20 and transformer 12 output terminal high-pressure side; When protective resistance 80 two ends institute making alive is less than its rated withstand voltage, then this protective resistance 80 short circuit.
Best; be provided with a wall bushing 90; this wall bushing 90 is fixed on this moist chambers 30 wall; the serial connection wire be arranged in outside this moist chambers 30 is passed by this wall bushing 90 and connects the insulator 20 of moist chambers 30; to protect through walls section of this serial connection wire from damage; in the present embodiment, this wall bushing 90 is porcelain bushing, hollow columnar.
Mist degree in moist chambers 30 of the present invention is adjustable, with the humidity condition of analog insulation 20 extraneous running environment.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process according to this, the equivalence change namely done according to the scope of the claims of the present invention and description with modify, all should still belong in scope that the present invention contains.
Claims (7)
1. insulator Leakage Current signal measures system, it is characterized in that: comprise power module, insulator, moist chambers, detection resistance and harvester, this insulator is placed in this moist chambers, the output terminal of this power module is connected in series this insulator successively and detects resistance, this harvester also connects the magnitude of voltage that these detection resistance two ends also can obtain these resistance two ends, obtains Leakage Current and the insulating property of this insulator by analyzing this magnitude of voltage.
2. insulator Leakage Current signal according to claim 1 measures system, it is characterized in that: this power module comprises a pressure regulator and transformer, the input termination low-tension supply of this pressure regulator exports, the primary side of the output termination transformer of this pressure regulator, the secondary side of this transformer is as the output terminal of this power module.
3. insulator Leakage Current signal according to claim 1 and 2 measures system, it is characterized in that: also comprise a capacitive divider and measurement mechanism, this capacitive divider can be attempted by the output terminal of this power module, measurement mechanism connects this capacitive divider and can obtain and show the partial pressure value on this capacitive divider, is obtained the output voltage of this power module by this partial pressure value.
4. insulator Leakage Current signal according to claim 1 and 2 measures system, and it is characterized in that: also comprise a protective resistance, this protective resistance is serially connected in the cathode output end of this power module.
5. insulator Leakage Current signal according to claim 1 and 2 measures system, it is characterized in that: be provided with a wall bushing, this wall bushing is fixed on this fog locular wall, and the serial connection wire be arranged in outside this moist chambers is passed by this wall bushing and connects the insulator of moist chambers.
6. insulator Leakage Current signal according to claim 3 measures system, it is characterized in that: this measurement mechanism is voltage table.
7. insulator Leakage Current signal according to claim 5 measures system, it is characterized in that: this wall bushing is porcelain bushing, hollow columnar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030732.XA CN104569767A (en) | 2015-01-21 | 2015-01-21 | Leakage current signal acquisition system of insulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030732.XA CN104569767A (en) | 2015-01-21 | 2015-01-21 | Leakage current signal acquisition system of insulator |
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| CN104569767A true CN104569767A (en) | 2015-04-29 |
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| CN201510030732.XA Pending CN104569767A (en) | 2015-01-21 | 2015-01-21 | Leakage current signal acquisition system of insulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053542A (en) * | 2016-07-21 | 2016-10-26 | 国网山西省电力公司电力科学研究院 | Accuracy detection device and method for power line dirt online monitor |
| CN106249115A (en) * | 2016-08-24 | 2016-12-21 | 古恒威 | The insulator detector that a kind of accuracy rate is high |
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| US20030214307A1 (en) * | 2002-03-29 | 2003-11-20 | Chang-Won Kang | Device for detecting partial discharge in power equipment using radiated electromagnetic wave |
| CN102694358A (en) * | 2012-06-07 | 2012-09-26 | 甘肃省电力公司电力科学研究院 | Method for improving potential distribution of insulators in transmission line in filthy and wet environment |
| CN203287512U (en) * | 2013-04-27 | 2013-11-13 | 中国电力科学研究院 | Detection calibration system of insulator contamination current monitoring device |
| CN103454540A (en) * | 2013-09-18 | 2013-12-18 | 武汉大学 | Manual accelerating electrical ageing test method for ceramic insulator |
| CN203455389U (en) * | 2013-09-03 | 2014-02-26 | 北京豪锐达科技有限公司 | Simulation test stand for power transmission line insulator leakage current |
| CN204347198U (en) * | 2015-01-21 | 2015-05-20 | 国家电网公司 | Insulator Leakage Current signal measures system |
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2015
- 2015-01-21 CN CN201510030732.XA patent/CN104569767A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030214307A1 (en) * | 2002-03-29 | 2003-11-20 | Chang-Won Kang | Device for detecting partial discharge in power equipment using radiated electromagnetic wave |
| CN102694358A (en) * | 2012-06-07 | 2012-09-26 | 甘肃省电力公司电力科学研究院 | Method for improving potential distribution of insulators in transmission line in filthy and wet environment |
| CN203287512U (en) * | 2013-04-27 | 2013-11-13 | 中国电力科学研究院 | Detection calibration system of insulator contamination current monitoring device |
| CN203455389U (en) * | 2013-09-03 | 2014-02-26 | 北京豪锐达科技有限公司 | Simulation test stand for power transmission line insulator leakage current |
| CN103454540A (en) * | 2013-09-18 | 2013-12-18 | 武汉大学 | Manual accelerating electrical ageing test method for ceramic insulator |
| CN204347198U (en) * | 2015-01-21 | 2015-05-20 | 国家电网公司 | Insulator Leakage Current signal measures system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053542A (en) * | 2016-07-21 | 2016-10-26 | 国网山西省电力公司电力科学研究院 | Accuracy detection device and method for power line dirt online monitor |
| CN106249115A (en) * | 2016-08-24 | 2016-12-21 | 古恒威 | The insulator detector that a kind of accuracy rate is high |
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Application publication date: 20150429 |
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