CN102967810A - Partial discharge detecting device for variable-frequency resonant oscillation wave cable - Google Patents
Partial discharge detecting device for variable-frequency resonant oscillation wave cable Download PDFInfo
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- CN102967810A CN102967810A CN2012104774375A CN201210477437A CN102967810A CN 102967810 A CN102967810 A CN 102967810A CN 2012104774375 A CN2012104774375 A CN 2012104774375A CN 201210477437 A CN201210477437 A CN 201210477437A CN 102967810 A CN102967810 A CN 102967810A
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- capacitive divider
- partial discharge
- trap
- coupling capacitance
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Abstract
The invention relates to the field of detection of a variable-frequency resonant oscillation wave cable and particularly relates to a partial discharge detecting device of a variable-frequency resonant oscillation wave cable. The partial discharge detecting device comprises a wave trap (Zm), a first capacitive voltage divider (C1), a second capacitive voltage divider (C2), a detection impeder (Zd) and a coupling capacitor (Ck), which are arranged inside an insulating cylinder (4), wherein one end of the wave trap (Zm) is orderly connected with one end of the first capacitive voltage divider (C1), one end of the second capacitive voltage divider (C2), one end of the detection impeder (Zd) and one end of the coupling capacitor (Ck) in series, and the other end of the wave trap (Zm) is connected with the other end of the coupling capacitor (Ck). The partial discharge detecting device has the functions that as the capacitive voltage dividers, the coupling capacitor and the detection impeder are fixed inside the one device, and connecting wires of the parts are also fixed, so that independent wiring is not needed in a test, the operation is very convenient, and meanwhile, the effects of external factors such as an ambient environment on an experiment result are also alleviated.
Description
Technical field
The present invention relates to the detection field of frequency conversion resonance vibration wave of oscillation cable, be specifically related to a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit.
Background technology
The sampling unit of ac high-voltage partial discharge test system generally is comprised of capacitive divider, coupling capacitance and detection impedance.
In the prior art, capacitive divider, coupling capacitance and detection impedance are separate, are that wiring detects respectively respectively during detection, cause like this detection wiring of each unit to bother very much, and since the frequency height of wiring to cause detecting error large, also affect easily each other testing result.
Summary of the invention
The object of the present invention is to provide a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit, solved existing local discharge detection device wiring trouble, affect easily the problem of testing result.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit, comprise the trap, the first capacitive divider, the second capacitive divider, detection impedance and the coupling capacitance that are installed in insulating cylinder, one end of described trap is connected in series successively with an end of the first capacitive divider, the second capacitive divider, detection impedance and coupling capacitance, and the other end of trap is connected with the other end of coupling capacitance;
Be provided with the first HV Terminal between described coupling capacitance and the trap, be provided with the second HV Terminal between described trap and the first capacitive divider, be provided with the voltage sample terminal between described the first capacitive divider and the second capacitive divider, be provided with ground terminal between described the second capacitive divider and the detection impedance, sampling terminal is put in the office of being provided with between detection impedance and the coupling capacitance;
Fill in the described insulating cylinder insulating oil is arranged.
For making the present invention play better technique effect: further technical scheme is the bleeding point that is provided with communication with cavity and the pouring orifice of above-mentioned insulating cylinder.
Further technical scheme is that upper flange and the bolt of upper end by mutual coupling of above-mentioned insulating cylinder is equipped with loam cake, and the lower end of insulating cylinder is equipped with lower cover by lower flange and the bolt of mutual coupling.
Compared with prior art, the invention has the beneficial effects as follows: this pick-up unit is agreed capacitive divider, coupling capacitance and three unit of detection impedance to be fixed in the device, its wiring also is fixed, when test, just need not so more separately wiring, very convenient, also reduced the impact of the external factors such as surrounding environment on experimental result simultaneously.
Description of drawings
Fig. 1 is the circuit connection diagram of an embodiment of a kind of frequency conversion resonance vibration wave of oscillation of the present invention cable partial discharge pick-up unit.
Fig. 2 is the structural representation of an embodiment of a kind of frequency conversion resonance vibration wave of oscillation of the present invention cable partial discharge pick-up unit shown in Figure 1.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 and Fig. 2 show an embodiment of a kind of frequency conversion resonance vibration wave of oscillation of the present invention cable partial discharge pick-up unit: a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit, comprise trap Zm, the first capacitive divider C1, the second capacitive divider C2, detection impedance Z d and the coupling capacitance Ck that are installed in insulating cylinder 4, the end of described trap Zm is connected in series successively with the end of the first capacitive divider C1, the second capacitive divider C2, detection impedance Z d and coupling capacitance Ck, and the other end of trap Zm is connected with the other end of coupling capacitance Ck;
Particularly shown in Figure 2, trap Zm, the first capacitive divider C1 and the second capacitive divider C2 have been followed in series to form capacitance partial pressure wave arrestment string 1, coupling capacitance Ck and detection impedance Z d have been followed in series to form coupling capacitance impedance string 2, be provided with the first HV Terminal 13 between described coupling capacitance Ck and the trap Zm, be provided with the second HV Terminal 12 between described trap Zm and the first capacitive divider C1, be provided with voltage sample terminal 10 between described the first capacitive divider C1 and the second capacitive divider C2, be provided with ground terminal 9 between described the second capacitive divider C2 and the detection impedance Z d, sampling terminal 11 is put in the office of being provided with between detection impedance Z d and the coupling capacitance Ck; More specifically, the first HV Terminal 13 is by being connected between coupling capacitance Ck and the trap Zm by the first tap lead 16, the second HV Terminal 12 is to be connected between trap Zm and the first capacitive divider C1 by the second tap lead 15, voltage sample terminal 10 is to be connected in the first capacitive divider C1 and the second capacitive divider C2 by high-voltage connection 17, ground terminal 9 is to be connected between the second capacitive divider C2 and the detection impedance Z d by ground lead 14, and it is to be connected in by the second high-voltage connection 18 to detect between impedance Z d and the coupling capacitance Ck that sampling terminal 11 is put in office; Fill in the described insulating cylinder 4 insulating oil is arranged.
Wherein the impact of measurement is put in the product to be tested office that is rivals in a contest of the adding of the trap Zm office that can weaken pressures partially, and the Partial discharge signal that blocks product to be tested decays to the pressures partially transmission, puts the sensitivity of measurement to improve product to be tested office.
Another embodiment of a kind of frequency conversion resonance vibration wave of oscillation of the present invention cable partial discharge pick-up unit, the bleeding point that is provided with communication with cavity 20 of insulating cylinder 4 and pouring orifice 21, after above-mentioned each components and parts all install, can directly fill insulating oil by pouring orifice 21 to insulating cylinder 4 inner chambers, bleeding point 20 is used for getting rid of the gas of insulating cylinder 4 inner chambers.
Another embodiment of a kind of frequency conversion resonance vibration wave of oscillation of the present invention cable partial discharge pick-up unit, for being easy for installation and removal, and simplified manufacturing process, the upper end of insulating cylinder 4 is equipped with loam cake 6 by the upper flange 5 of mutual coupling with bolt 19, and the lower end of insulating cylinder 4 is equipped with lower cover 8 by lower flange 7 and the bolt 19 of mutual coupling.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", " preferred embodiment " etc., the specific features, structure or the characteristics that refer in conjunction with this embodiment description are included among at least one embodiment of the application's generality description.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that those skilled in the art can design a lot of other modification and embodiments, these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (3)
1. frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit, it is characterized in that: comprise the trap (Zm), the first capacitive divider (C1), the second capacitive divider (C2), detection impedance (Zd) and the coupling capacitance (Ck) that are installed in insulating cylinder (4), one end of described trap (Zm) is connected in series successively with an end of the first capacitive divider (C1), the second capacitive divider (C2), detection impedance (Zd) and coupling capacitance (Ck), and the other end of trap (Zm) is connected with the other end of coupling capacitance (Ck);
Be provided with the first HV Terminal (13) between described coupling capacitance (Ck) and the trap (Zm), be provided with the second HV Terminal (12) between described trap (Zm) and the first capacitive divider (C1), be provided with voltage sample terminal (10) between described the first capacitive divider (C1) and the second capacitive divider (C2), be provided with ground terminal (9) between described the second capacitive divider (C2) and the detection impedance (Zd), sampling terminal (11) is put in the office of being provided with between detection impedance (Zd) and the coupling capacitance (Ck);
Fill in the described insulating cylinder (4) insulating oil is arranged.
2. a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit according to claim 1 is characterized in that: the bleeding point that is provided with communication with cavity (20) of described insulating cylinder (4) and pouring orifice (21).
3. a kind of frequency conversion resonance vibration wave of oscillation cable partial discharge pick-up unit according to claim 1, it is characterized in that: the upper end of described insulating cylinder (4) is equipped with loam cake (6) by the upper flange (5) that mutually mates with bolt (19), and the lower end of insulating cylinder (4) is by lower flange (7) and the bolt (19) of coupling are equipped with lower cover (8) mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104774375A CN102967810A (en) | 2012-11-22 | 2012-11-22 | Partial discharge detecting device for variable-frequency resonant oscillation wave cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104774375A CN102967810A (en) | 2012-11-22 | 2012-11-22 | Partial discharge detecting device for variable-frequency resonant oscillation wave cable |
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| Publication Number | Publication Date |
|---|---|
| CN102967810A true CN102967810A (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104774375A Pending CN102967810A (en) | 2012-11-22 | 2012-11-22 | Partial discharge detecting device for variable-frequency resonant oscillation wave cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513158A (en) * | 2013-09-18 | 2014-01-15 | 西安交通大学 | Damped oscillatory wave lower cable local discharge detection device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107171A (en) * | 1980-01-30 | 1981-08-25 | Hitachi Ltd | Partial discharge detector |
| CN1719268A (en) * | 2005-08-04 | 2006-01-11 | 上海思源电气股份有限公司 | No partial discharge frequency conversion resonance experiment system |
| JP2008216145A (en) * | 2007-03-06 | 2008-09-18 | Tokyo Electric Power Co Inc:The | Partial discharge detection method |
| CN202383242U (en) * | 2011-12-23 | 2012-08-15 | 保定天威集团有限公司 | Partial discharge detection sensor of high-voltage motor |
| CN202758039U (en) * | 2011-12-05 | 2013-02-27 | 丁一舟 | Voltage and partial discharge signal sampling unit for electrical test |
| CN203054175U (en) * | 2012-11-22 | 2013-07-10 | 四川电力科学研究院 | Variable frequency resonance oscillation wave cable partial discharge detection device |
-
2012
- 2012-11-22 CN CN2012104774375A patent/CN102967810A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107171A (en) * | 1980-01-30 | 1981-08-25 | Hitachi Ltd | Partial discharge detector |
| CN1719268A (en) * | 2005-08-04 | 2006-01-11 | 上海思源电气股份有限公司 | No partial discharge frequency conversion resonance experiment system |
| JP2008216145A (en) * | 2007-03-06 | 2008-09-18 | Tokyo Electric Power Co Inc:The | Partial discharge detection method |
| CN202758039U (en) * | 2011-12-05 | 2013-02-27 | 丁一舟 | Voltage and partial discharge signal sampling unit for electrical test |
| CN202383242U (en) * | 2011-12-23 | 2012-08-15 | 保定天威集团有限公司 | Partial discharge detection sensor of high-voltage motor |
| CN203054175U (en) * | 2012-11-22 | 2013-07-10 | 四川电力科学研究院 | Variable frequency resonance oscillation wave cable partial discharge detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513158A (en) * | 2013-09-18 | 2014-01-15 | 西安交通大学 | Damped oscillatory wave lower cable local discharge detection device and method |
| CN103513158B (en) * | 2013-09-18 | 2017-01-11 | 西安交通大学 | Damped oscillatory wave lower cable local discharge detection device and method |
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Application publication date: 20130313 |