CN205427124U - Testing arrangement of electrical equipment and insulating material return voltage - Google Patents
Testing arrangement of electrical equipment and insulating material return voltage Download PDFInfo
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- CN205427124U CN205427124U CN201620213399.6U CN201620213399U CN205427124U CN 205427124 U CN205427124 U CN 205427124U CN 201620213399 U CN201620213399 U CN 201620213399U CN 205427124 U CN205427124 U CN 205427124U
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Abstract
The utility model discloses a testing arrangement on -off control unit, stabilize high voltage dc source unit, polarization depolarization current data acquisition unit, CPU and calculate the control unit, display element as a result, testing arrangement on -off control unit (1) with stabilize high voltage dc source unit (2) and be connected, try on clothes and put on -off control unit (1) and CPU and calculate the control unit (4) and be connected, it is connected with polarization depolarization current data acquisition unit (3) to test required insulating material and electrical equipment, it is connected with required insulating material of test and electrical equipment to stabilize high voltage dc source unit (2), polarization depolarization current data acquisition unit (3) calculates the control unit (4) with CPU and is connected, CPU calculates the control unit (4) and is connected with display element (5) as a result, testing arrangement passes through polarization depolarization current data acquisition unit and CPU calculation the control unit's signal processing, obtains electrical equipment and insulating material's return voltage, has solved the problem in the insulating detection.
Description
Technical field
The utility model relates to the test device of a kind of electrical equipment and insulating materials return voltage, belongs to electrical equipment and insulating materials ageing management category.
Background technology
The ageing state of electrical equipment and insulating materials directly influences the operation of power system safety and stability, the ageing state of electrical equipment and insulating materials is estimated by the physics and chemistry generally using measurement aging by insulation system in engineering and to cause and the change of classical insulation, but single data analysis can not clearly state the aging variable condition of insulating inner, some destructive testing is unfavorable for realizing Site Detection.
Dielectric response measures a kind of method that technology is research dielectric polarization characteristic, is the one of Transformer Insulation Aging nondestructiving detecting means, has strong interference immunity, carries the advantages such as abundant information.The variation tendency of state of insulation in electrical equipment and insulating materials more can be effectively judged including the polarization depolarization current method of time domain method and the insulation ag(e)ing information that obtains of return voltage method.
Present stage still relies on return voltage detector (such as RVM5462) to the detection of electrical equipment and insulating materials, and test rate is slower.Comparatively speaking, electrical equipment and insulating materials polarization depolarization current are more readily detected.The utility model device, the polarization depolarization current data obtained according to experimental test, apply CPU computing module, rapid translating becomes return voltage, decreases the on-the-spot test time and obtains the insulation monitoring data under two kinds of time domain approach.Study by the conversion equipment of polarization depolarising data to return voltage, not only can enrich the extraction of aging character parameter, be conducive to analyzing electrical equipment and insulating materials degree of aging, it is easy to set up life appraisal standard, it is also possible to shorten the in-site measurement time, minimizing test object stops transport the economic loss brought for a long time.
The utility model device is based on polarization depolarization current detection, CPU calculation control unit is passed through after obtaining the polarization depolarization current sampled data under certain discharge and recharge time conditions, it is converted into required return voltage data, the relay on-off time of device switch control unit can be changed by CPU calculation control unit, obtain the return voltage data under different discharge and recharge；Can be changed the on-load voltage value of stable high voltage DC power source unit by CPU calculation control unit simultaneously.
Summary of the invention
The utility model provides the test device of a kind of electrical equipment and insulating materials return voltage, solves the most effectively to measure electrical equipment and the technical problem of insulating materials return voltage.
The purpose of this utility model is achieved in that the test device of a kind of electrical equipment and insulating materials return voltage includes testing device switch control unit 1, stable high voltage DC power source unit 2, polarization depolarization current data acquisition unit 3, CPU computing unit 4, result display unit 5；Described test device switch control unit 1 is connected with stable high voltage DC power source unit 2；Described electricity testing device switch control unit 1 is made up of many group relaies；Described stable high voltage DC power source unit 2 is made up of change-over circuit and control circuit；Described electricity testing device switch control unit 1 is connected with CPU calculation control unit 4；Described stable high voltage DC power source unit 2 is connected with CPU calculation control unit 4；Needed for described test, insulating materials and electrical equipment are connected with polarization depolarization current data acquisition unit 3；Described stable high voltage DC power source unit 2 insulating materials required with test and electrical equipment are connected；Described polarization depolarization current data acquisition unit 3 is connected 4 with CPU calculation control unit；Described CPU computing unit 4 is connected 5 with result display unit；Test device is by the signal transacting of polarization depolarization current data acquisition unit 3 with CPU calculation control unit 4, the rapid conversion between two kinds of time domain dielectric datas can be realized, obtain electrical equipment and the return voltage data of insulating materials under different discharge and recharge time or on-load voltage.
Described a kind of electrical equipment and the test device of insulating materials return voltage, described polarization depolarization current data acquisition unit is made up of micro-current detecting unit, filter unit, A/D converting unit, current signal processing unit, usb circuit.
Described a kind of electrical equipment and the test device of insulating materials return voltage, described test device switch control unit 1 is processed by CPU calculation control unit 4, optional busy relay cut-offs signal and polarization depolarization current data collection cycle, stable high voltage DC power source unit 2 is processed by CPU calculation control unit 4, optional voltage output value.
A kind of electrical equipment described further and the test device of insulating materials return voltage, the voltage output range of described stable high voltage DC power source unit 2 can be with 0 ~ 1000VDC, and the acquisition rate of the depolarization current data acquisition unit 3 that polarizes can reach 1.25Msps.
The test of return voltage data is more beneficial for analyzing the degree of aging of insulating materials, the particularly degree of aging of high-power transformer, inner aqueous quantitative analysis has close relationship, the utility model uses such scheme: through CPU, the polarization depolarization current data obtained by experimental test can be calculated control process and obtain return voltage data, the extraction of abundant aging character parameter, be conducive to analyzing electrical equipment and insulating materials degree of aging, it is also possible to shorten the in-site measurement time, minimizing test object stops transport the economic loss brought for a long time.
Accompanying drawing explanation
Fig. 1 apparatus structure schematic diagram.
Fig. 2 polarizes depolarization current sample circuit.
Fig. 3 changes the return voltage curve under the different charging interval.
Fig. 4 changes the return voltage curve under different discharge time.
Fig. 5 changes the return voltage curve under different charging voltage.
Detailed description of the invention
For the technical characterstic of this programme can be clearly described, below by concrete test, in conjunction with its accompanying drawing, the test device to test of a kind of electrical equipment and insulating materials return voltage comprises the steps:
As it is shown in figure 1, the test device of a kind of electrical equipment and insulating materials return voltage includes testing device switch control unit, stable high voltage DC power source unit, polarization depolarization current data acquisition unit, CPU calculation control unit, result display unit；Test device switch control unit 1 is connected with stable high voltage DC power source unit 2, CPU calculation control unit 4；Stable high voltage DC power source unit is connected with CPU calculation control unit 4, the required insulating materials of test and electrical equipment；Described polarization depolarization current data acquisition unit 3 insulating materials required with test and electrical equipment, CPU calculation control unit are connected 4 and connect；Described CPU computing unit 4 is connected 5 with result display unit, and its result display unit application association's ThinkPad main frame and CPU calculation control unit 80c51 interconnect, and carry out data exchange and arrange.
Device switch control unit internal relay is taked time control by CPU calculation control unit by display unit, controls required stable DC magnitude of voltage simultaneously.The output area of stable DC adjustable voltage is 1 ~ 1000VDC, meets general electrical equipment and insulating materials testing requirement.
As in figure 2 it is shown, polarization depolarization current data acquisition unit, it is made up of micro-current detecting unit, filter unit, A/D converting unit, current signal processing unit, usb circuit.Wherein filter unit is mainly used in the power frequency interference signals overcoming coupled outside in micro-current detecting unit, and the acquisition rate of A/D converting unit is 1.25Msps.
Insulating materials and electrical equipment charge and discharge process are as follows:
Charging stage, S1, S3 Guan Bi in test device switch control unit, S2 disconnects, charging interval t1, and polarization depolarization current data acquisition unit gathers polarization current data.
Discharge regime, test device switch control unit in S2, S3 Guan Bi, S1 disconnect, discharge time t2-t1, polarization depolarization current data acquisition unit gather depolarization current data.
Being substantially discharged the stage, in test device switch control unit, S1, S3 disconnect, and S2 closes, and short-circuit style to be measured so that it is discharge completely enters next return voltage test process.
Application example
Crosslinked polyethylene (XLPE) sheet dielectric material that test selects thickness to be 1mm thickness, as test sample, has carried out different discharge and recharge time and the test of different applied voltage respectively, obtains the return voltage conversion data under different condition.
It is calculated return voltage curve as shown in Figure 3 during respectively 250v, 500v, the 750v of the charging voltage value in return voltage equation.
It is calculated return voltage curve as shown in Figure 4 during respectively 500s, 1000s, the 1500s of the charging interval in return voltage equation.
Return voltage equation be calculated return voltage curve as shown in Figure 5 when putting respectively 20s, 120s, 220s of same discharge time.
The utility model does not describes part in detail, it is the known technology of those skilled in the art of the present technique, polarization depolarization current data obtained by experimental test can be calculated control process by CPU and obtain return voltage data by the numerical value conversion equipment of this electrical equipment and insulating materials return voltage, thus can enrich the extraction of aging character parameter, be conducive to analyzing electrical equipment and insulating materials degree of aging, it is also possible to shorten the in-site measurement time, minimizing test object stops transport the economic loss brought for a long time.
Claims (4)
1. an electrical equipment and the test device of insulating materials return voltage, it is characterised in that: test device switch control unit (1), stable high voltage DC power source unit (2), polarization depolarization current data acquisition unit (3), CPU computing unit (4), result display unit (5)；Described test device switch control unit (1) is connected with stable high voltage DC power source unit (2)；Described electricity testing device switch control unit (1) is made up of many group relaies；Described stable high voltage DC power source unit (2) is made up of change-over circuit and control circuit；Described electricity testing device switch control unit (1) is connected with CPU calculation control unit (4)；Described stable high voltage DC power source unit is connected with CPU calculation control unit (4)；Needed for described test, insulating materials and electrical equipment are connected with polarization depolarization current data acquisition unit (3)；Described stable high voltage DC power source unit (2) insulating materials required with test and electrical equipment are connected；Described polarization depolarization current data acquisition unit (3) is connected with CPU calculation control unit (4)；Described CPU computing unit (4) is connected with result display unit (5)；The test device signal transacting by polarization depolarization current data acquisition unit (3) with CPU calculation control unit (4), the rapid conversion between two kinds of time domain dielectric methods can be realized, obtain electrical equipment and the return voltage data of insulating materials under different discharge and recharge time or on-load voltage.
A kind of electrical equipment the most according to claim 1 and the test device of insulating materials return voltage, it is characterised in that polarization depolarization current data acquisition unit is made up of micro-current detecting unit, filter unit, A/D converting unit, current signal processing unit, usb circuit.
A kind of electrical equipment the most according to claim 1 and the test device of insulating materials return voltage, it is characterized in that the voltage output range of stable high voltage DC power source unit (2) can be with 0 ~ 1000VDC, the acquisition rate of the depolarization current data acquisition unit (3) that polarizes can reach 1.25Msps.
A kind of electrical equipment the most according to claim 1 and the test device of insulating materials return voltage, it is characterized in that testing device switch control unit (1) is processed by CPU calculation control unit (4), optional busy relay cut-offs signal and polarization depolarization current data collection cycle, stable high voltage DC power source unit (2) by CPU calculation control unit (4) process, optional voltage output value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620213399.6U CN205427124U (en) | 2016-03-21 | 2016-03-21 | Testing arrangement of electrical equipment and insulating material return voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620213399.6U CN205427124U (en) | 2016-03-21 | 2016-03-21 | Testing arrangement of electrical equipment and insulating material return voltage |
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| CN205427124U true CN205427124U (en) | 2016-08-03 |
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| CN201620213399.6U Expired - Fee Related CN205427124U (en) | 2016-03-21 | 2016-03-21 | Testing arrangement of electrical equipment and insulating material return voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443129A (en) * | 2016-09-26 | 2017-02-22 | 哈尔滨理工大学 | Numerical computation method for recovery voltage of electrical equipment and insulating material |
-
2016
- 2016-03-21 CN CN201620213399.6U patent/CN205427124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443129A (en) * | 2016-09-26 | 2017-02-22 | 哈尔滨理工大学 | Numerical computation method for recovery voltage of electrical equipment and insulating material |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20170321 |
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| CF01 | Termination of patent right due to non-payment of annual fee |