CN204142943U - Transient earth voltage sensor sensitivity check device - Google Patents
Transient earth voltage sensor sensitivity check device Download PDFInfo
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- CN204142943U CN204142943U CN201420515612.XU CN201420515612U CN204142943U CN 204142943 U CN204142943 U CN 204142943U CN 201420515612 U CN201420515612 U CN 201420515612U CN 204142943 U CN204142943 U CN 204142943U
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Abstract
A kind of transient earth voltage sensor sensitivity check device, comprises power controling box, power-supply filter, to put step-up transformer without office, coupling capacitance, detection impedance, switch cubicle, local discharge signal analogue means, transient earth voltage office put tester, electric pulse Partial discharge detector; The input end putting step-up transformer without office is connected with power-supply controller of electric by power-supply filter; Coupling capacitance and detection impedance are connected to after connecting puts between the two-terminal of step-up transformer output terminal without office; High-field electrode, the low-field electrode of switch cubicle are connected with two-terminal respectively; Local discharge signal analogue means is positioned at switch cabinet, and two ends are connected with high-field electrode and low-field electrode respectively; Transient earth voltage office puts tester and is connected with the transient earth voltage sensor to be measured being close to switch cubicle outer wall; Electric pulse Partial discharge detector one end is connected with detection impedance, other end ground connection.This new device can realize the verification to transient earth voltage sensor sensitivity, improves the accuracy that transient earth voltage sensor is measured.
Description
Technical field
The utility model relates to instrument and meter detection technique field, particularly relates to a kind of transient earth voltage sensor sensitivity check device.
Background technology
Switch cubicle is a kind of electrical equipment, carries out generating electricity, transmits electricity, in the process of distribution and electric energy conversion, carries out folding, control and protection consumer, be widely used in electrical network in electric system.
Partial Discharge Detection is the effective means of apparatus insulated situation in assessment switch cubicle, just explicitly points out the two kinds of methods will carrying out Partial Discharge Detection to high-tension switch cabinet: supercritical ultrasonics technology and transient earth voltage method in China Nanfang Grid Co., Ltd company standard Q/CSG-2010 " 10kV-35kV (kilovolt) high-tension switch cabinet shelf depreciation live testing device technique specification ".One of basic demand of transient earth voltage shelf depreciation live testing device is: probe should have sensitive sensing capability, guarantees the shelf depreciation state of sensitive reflection device interior.
Electrical pulse method also measure local discharge technology is ripe, and existing relevant criterion, directive/guide carry out the measurement of its shelf depreciation of specification, but the relevant criterion also not having transient earth voltage method also measure local to discharge at present.Transient earth voltage sensor performance is very different, if unified standard does not carry out examination verification to it, will greatly affect the validity and reliability of power equipment Partial Discharge Detection result, brings hidden danger to the safe operation of power equipment.
Utility model content
Based on this, be necessary for the problems referred to above, a kind of transient earth voltage sensor sensitivity check device is provided, can verify transient state low-voltage transducer sensitivity, ensure the validity and reliability of Partial Discharge Detection result.
A kind of transient earth voltage sensor sensitivity check device, comprises power controling box, power-supply filter, to put step-up transformer without office, coupling capacitance, detection impedance, switch cubicle, local discharge signal analogue means, transient earth voltage office put tester, electric pulse Partial discharge detector;
The described input end putting step-up transformer without office is connected with described power controling box by described power-supply filter; Be connected between described two-terminal of putting step-up transformer output terminal without office after described coupling capacitance and described detection impedance series connection; High-field electrode, the low-field electrode of described switch cubicle are connected with described two-terminal respectively; Described local discharge signal analogue means is positioned at described switch cabinet, and two ends are connected with described high-field electrode and described low-field electrode respectively; Described transient earth voltage office puts tester and is connected with the transient earth voltage sensor to be measured being close to described switch cubicle outer wall; Described electric pulse Partial discharge detector one end is connected with described detection impedance, other end ground connection.
Transient earth voltage sensor sensitivity check device of the present utility model is easy to use, effectively can measure the sensitivity of transient earth voltage sensor, realize the verification to transient earth voltage sensor sensitivity, guarantee the shelf depreciation state of transient earth voltage sensor sensitive reflection power equipment inside, improve the accuracy that transient earth voltage sensor is measured, thus ensure the safe operation of power equipment further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device embodiment.
Embodiment
Be described in detail below in conjunction with the embodiment of accompanying drawing to the utility model transient earth voltage sensor sensitivity check device.
A kind of transient earth voltage sensor sensitivity check device, comprises power controling box 1, power-supply filter 2, to put step-up transformer 3 without office, coupling capacitance 4, detection impedance 5, switch cubicle 9, local discharge signal analogue means 8, transient earth voltage office put tester 12, electric pulse Partial discharge detector 13;
The input end putting step-up transformer 3 without office is connected with power controling box 1 by power-supply filter 2; Coupling capacitance 4 and detection impedance 5 are connected to after connecting puts between the two-terminal of step-up transformer 3 output terminal without office; High-field electrode, the low-field electrode of switch cubicle 9 are connected with described two-terminal respectively; Local discharge signal analogue means 8 is positioned at switch cubicle 9 body, and two ends are connected with high-field electrode 6 and low-field electrode 7 respectively; Transient earth voltage office puts tester 12 and is connected with the transient earth voltage sensor 11 to be measured being close to switch cubicle 9 outer wall; Electric pulse Partial discharge detector 13 one end is connected with detection impedance 5, other end ground connection.
Power controling box 1, power-supply filter 2, put step-up transformer 3 be connected successively without office, the output terminal putting step-up transformer 3 without office connects high-field electrode 6 and the low-field electrode 7 of switch cubicle 9 respectively, applies suitable trial voltage for giving switch cubicle 9.Local discharge signal analogue means 8 is placed on the inside of switch cubicle 9, remains on 200mm ± 10mm (millimeter), for simulating local discharge signal with transient earth voltage sensor 11 distance to be measured.The terminal ground putting step-up transformer 3 output terminal without office be connected with detection impedance 5 is also low-field electrode 7 ground connection.Tested transient earth voltage sensing 11 device is fitted in switch cubicle 9 outer wall, and switch cubicle 9 is provided with gap.Electric pulse Partial discharge detector 13 and transient earth voltage office put tester 12 and analyse and compare to identical Partial discharge signal, verify transient earth voltage sensor 11.
According to electric pulse Partial discharge detector 13 and transient earth voltage office put tester 12 pairs of transient earth voltage sensor 11 verify time, by power controling box 1, power-supply filter 2, put step-up transformer 3 without office and apply suitable trial voltage, produce the local discharge signal of a certain fixed frequency.Regulate electric pulse Partial discharge detector 13 detection signal amplitude, and observe transient earth voltage office and put the signal amplitude that tester 12 detects.When electric pulse Partial discharge detector 13 detects that Signal Regulation arrives a certain critical value, tester 12 is put in transient earth voltage office be able to detect this signal, and this critical value is the sensitivity of transient earth voltage sensor 11 under this fixed frequency.Change local discharge signal analogue means 8, repeat above test process, then multiple Sensitirity va1ues of gained are averaging, namely obtain the average sensitivity of this transient earth voltage sensor 11 within the scope of certain frequency.According to this average sensitivity, transient earth voltage sensor 11 is verified, namely can guarantee the shelf depreciation state of transient earth voltage sensor 11 sensitive reflection power equipment inside, improve the accuracy that transient earth voltage sensor 11 is measured.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (4)
1. a transient earth voltage sensor sensitivity check device, it is characterized in that, comprise power controling box, power-supply filter, to put step-up transformer without office, coupling capacitance, detection impedance, switch cubicle, local discharge signal analogue means, transient earth voltage office put tester, electric pulse Partial discharge detector;
The described input end putting step-up transformer without office is connected with described power controling box by described power-supply filter; Be connected between described two-terminal of putting step-up transformer output terminal without office after described coupling capacitance and described detection impedance series connection; High-field electrode, the low-field electrode of described switch cubicle are connected with described two-terminal respectively; Described local discharge signal analogue means is positioned at described switch cabinet, and two ends are connected with described high-field electrode and described low-field electrode respectively; Described transient earth voltage office puts tester and is connected with the transient earth voltage sensor to be measured being close to described switch cubicle outer wall; Described electric pulse Partial discharge detector one end is connected with described detection impedance, other end ground connection.
2. transient earth voltage sensor sensitivity check device according to claim 1, is characterized in that, the distance of described local discharge signal analogue means and described transient earth voltage sensor is 200mm ± 10mm.
3. transient earth voltage sensor sensitivity check device according to claim 1, is characterized in that, the terminal ground putting step-up transformer output terminal without office be connected with described detection impedance.
4. the transient earth voltage sensor sensitivity check device according to claims 1 to 3 any one, it is characterized in that, described switch cubicle is provided with gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420515612.XU CN204142943U (en) | 2014-09-09 | 2014-09-09 | Transient earth voltage sensor sensitivity check device |
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| CN201420515612.XU CN204142943U (en) | 2014-09-09 | 2014-09-09 | Transient earth voltage sensor sensitivity check device |
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| CN204142943U true CN204142943U (en) | 2015-02-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914365A (en) * | 2015-06-12 | 2015-09-16 | 国网天津市电力公司 | Detection device and method for improving partial discharge detection sensitivity |
| CN105203930A (en) * | 2015-09-10 | 2015-12-30 | 国家电网公司 | Partial discharge test platform and method for high-voltage switch cabinet |
| CN106019005A (en) * | 2016-05-17 | 2016-10-12 | 中国电力科学研究院 | Testing system and method for simulating increase of transient ground potential |
| CN106054092A (en) * | 2016-05-23 | 2016-10-26 | 广东电网有限责任公司佛山供电局 | GIS partial discharge sensor sensitivity tester |
| CN106872922A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of detection method of external capacitive coupled sensors sensitivity |
| CN109116051A (en) * | 2018-10-31 | 2019-01-01 | 中国船舶重工集团公司第七0七研究所 | High-precision accelerometer resolution test method |
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN114089249A (en) * | 2021-11-26 | 2022-02-25 | 广东美的暖通设备有限公司 | Filter circuit, eddy current sensor, debugging method and debugging device |
-
2014
- 2014-09-09 CN CN201420515612.XU patent/CN204142943U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914365A (en) * | 2015-06-12 | 2015-09-16 | 国网天津市电力公司 | Detection device and method for improving partial discharge detection sensitivity |
| CN104914365B (en) * | 2015-06-12 | 2017-08-29 | 国网天津市电力公司 | A kind of detection means and method for improving Partial Discharge Detection sensitivity |
| CN105203930A (en) * | 2015-09-10 | 2015-12-30 | 国家电网公司 | Partial discharge test platform and method for high-voltage switch cabinet |
| CN106872922A (en) * | 2015-12-14 | 2017-06-20 | 中国电力科学研究院 | A kind of detection method of external capacitive coupled sensors sensitivity |
| CN106019005A (en) * | 2016-05-17 | 2016-10-12 | 中国电力科学研究院 | Testing system and method for simulating increase of transient ground potential |
| CN106019005B (en) * | 2016-05-17 | 2020-07-10 | 中国电力科学研究院 | Test system and method for simulating transient ground potential rise |
| CN106054092A (en) * | 2016-05-23 | 2016-10-26 | 广东电网有限责任公司佛山供电局 | GIS partial discharge sensor sensitivity tester |
| CN109116051A (en) * | 2018-10-31 | 2019-01-01 | 中国船舶重工集团公司第七0七研究所 | High-precision accelerometer resolution test method |
| CN109116051B (en) * | 2018-10-31 | 2020-12-15 | 中国船舶重工集团公司第七0七研究所 | High-precision accelerometer resolution test method |
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN114089249A (en) * | 2021-11-26 | 2022-02-25 | 广东美的暖通设备有限公司 | Filter circuit, eddy current sensor, debugging method and debugging device |
| CN114089249B (en) * | 2021-11-26 | 2024-05-28 | 广东美的暖通设备有限公司 | Filter circuit, eddy current sensor, debugging method and debugging device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200928 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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| TR01 | Transfer of patent right |