CN106597234A - Parallel elementary-error compensation power-frequency voltage-withstand test method - Google Patents
Parallel elementary-error compensation power-frequency voltage-withstand test method Download PDFInfo
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- CN106597234A CN106597234A CN201611132413.0A CN201611132413A CN106597234A CN 106597234 A CN106597234 A CN 106597234A CN 201611132413 A CN201611132413 A CN 201611132413A CN 106597234 A CN106597234 A CN 106597234A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a parallel elementary-error compensation power-frequency voltage-withstand test method and relates to the technical field of the voltage-withstand test of power equipment. In the prior art, field use cannot be achieved because of limitation of weight and power and only a variable-frequency series resonance voltage-withstand power-frequency test method can be used, and the conventional equipment is relatively complex to manufacture and use, and power load is highly required in field testing. Thus, the parallel elementary-error compensation is used in order to use a power-frequency voltage-withstand test closer to working conditions, and the method is simple and easy to operate, the test equipment using the method is small in size, light in weight, low in power consumption, and easy to transport and assemble, and can be powered by single-phase AC power to achieve true power-frequency voltage-withstand tests.
Description
Technical field
The present invention relates to power equipment pressure test technical field, more particularly to a kind of elementary errors compensation industrial frequency withstand voltage examination in parallel
Proved recipe method.
Background technology
Its handing-over of power equipment or preventive trial are required and carry out industrial frequency withstand voltage test, especially for power cable
Ac voltage withstanding is tested, and current industrial frequency experiment equipment is because weight, power limit reason cannot be used at the scene, thus take frequency conversion
The test method of the class power frequency that series resonance is pressure is carried out, and its frequency range is 20-300Hz, and actual this mode is transported with actual
Row voltage waveform or differentiated, and its equipment voltage input is mainly made up of powerful power electronic devices, equipment system
Make using all relative complex, big to power supply burden requirement during field test in addition, general tens to hundreds of ampere is used mostly 3
Phase power supply.
The content of the invention
The present invention provides a kind of elementary errors in parallel and compensates industrial frequency withstand voltage test method, to solve prior art because weight,
The restriction of the reasons such as power cannot be used at the scene, can only adopt the pressure class power frequency of variable-frequency series-resonance test method and
Existing equipment is manufactured, uses all relative complex, the technical problem big to power supply burden requirement during field test.
To solve the above problems, the present invention adopts the following technical scheme that realization：
A kind of elementary errors in parallel compensates industrial frequency withstand voltage test method, it is characterised in that comprise the following steps：
S1, connection equipment；
S2, capacitance C for obtaining equipment under test；
S3, basisThe capacity current of equipment under test is calculated, wherein, f is the frequency of experiment power supply, and C is the quilt
The capacitance of measurement equipment, U is the magnitude of voltage of experiment power supply；
S4, according to the capacity current IbSize select compensation inductance value Lb；
S5, according to compensation inductance value LbSelect, connection and adjustment reactor make the actual inductance amount of reactor and the compensation electric
Sensibility reciprocal LbCorrespondence；
S6, basisTotal capacitance value is calculated, wherein, f is the frequency of experiment power supply, LbInductance is repaid for described
Amount；
S7, according to Cb=Cz- C obtains compensating electric capacity amount, wherein, CzIt is the total capacitance value, C is the electric capacity of the equipment under test
Amount；
S8, connection and adjustment capacitor, make total capacity value and the compensating electric capacity amount pair for calculating after capacitor connection
Should；
S9, switch on power, complete pressure test.
Preferably, the step S1 connection equipment includes：Power control unit is connected with boosting unit by connecting line activity
Connect, the boosting unit is flexibly connected with the compensating unit by connecting line, the compensating unit is connected with equipment under test.
Preferably, step S2 obtain equipment under test capacitance C include according to table look-up or on-the-spot test draw it is described
Capacitance C of equipment under test.
Preferably, the actual inductance amount and the compensation inductance value Lb that reactor is made described in step S5 corresponds to reactance
The actual inductance amount of device is equal or close with the compensation inductance value Lb.
Further, the close scope is -0.1mH ~+1mH.
Preferably, total capacity value described in step S8 corresponds to total capacity value with the compensating electric capacity amount for calculating
It is equal or close with the compensating electric capacity amount for calculating.
Further, the close scope is -0.1PF ~+1PF.
The present invention can be tested closer to operating mode ground using the method for connection elementary errors compensation using industrial frequency withstand voltage, and method
Simple easily operation, the little lightweight, little power consumption of equipment volume that the test carried out by the method is adopted, is readily transported and assembles,
And single-phase ac power supply can be adopted, realize real industrial frequency withstand voltage test.
Description of the drawings
Fig. 1 is the pressure examination that the elementary errors in parallel compensation industrial frequency withstand voltage test method that the present invention is provided is carried out for power transmission cable
Test schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention in it is attached
Figure, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is the present invention
A part of embodiment, rather than the embodiment of whole.Embodiments of the invention generally described and illustrated in accompanying drawing herein
Detailed description is not intended to limit the scope of claimed invention, but is merely representative of the selected embodiment of the present invention.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
The present embodiment is applied to the pressure test that power transmission cable is carried out with the elementary errors compensation industrial frequency withstand voltage test method in parallel
To illustrate, as shown in figure 1, a kind of elementary errors in parallel compensates industrial frequency withstand voltage test method, comprise the following steps：
S1, connection equipment；
Connect equipment as shown in Figure 1, wherein：Power control unit is flexibly connected with boosting unit by connecting line, the boosting
Unit is flexibly connected with the compensating unit by connecting line, and the compensating unit is connected with equipment under test.
S2, capacitance C for obtaining equipment under test, capacitance C can be according to tabling look-up or on-the-spot test draws.
S3, basisThe capacity current of equipment under test is calculated, wherein, f is the frequency of experiment power supply, and C is described
The capacitance of equipment under test, U is the magnitude of voltage of experiment power supply；
S4, according to the capacity current IbSize select compensation inductance value Lb；
S5, according to compensation inductance value LbSelect, connection and adjustment reactor make the actual inductance amount of reactor and the compensation electric
Sensibility reciprocal LbEqual or close, close scope is -0.1mH ~+1mH.
S6, basisTotal capacitance value is calculated, wherein, f is the frequency of experiment power supply, LbRepay for described
Inductance value；
S7, according to Cb=Cz- C obtains compensating electric capacity amount, wherein, CzIt is the total capacitance value, C is the electric capacity of the equipment under test
Amount；
S8, connection and adjustment capacitor, make total capacity value and the compensating electric capacity amount phase for calculating after capacitor connection
Deng or be close to, close scope be -0.1PF ~+1PF；
S9, switch on power, complete pressure test.
The present invention can be tested closer to operating mode ground using the method for connection elementary errors compensation using industrial frequency withstand voltage, and method
Simple easily operation, the little lightweight, little power consumption of equipment volume that the test carried out by the method is adopted, is readily transported and assembles,
And single-phase ac power supply can be adopted, realize real industrial frequency withstand voltage test.
Claims (7)
1. a kind of elementary errors in parallel compensates industrial frequency withstand voltage test method, it is characterised in that comprise the following steps：
S1, connection equipment；
S2, capacitance C for obtaining equipment under test；
S3, basisThe capacity current of equipment under test is calculated, wherein, f is the frequency of experiment power supply, and C is described tested
The capacitance of equipment, U is the magnitude of voltage of experiment power supply；
S4, according to the capacity current IbSize select compensation inductance value Lb；
S5, according to compensation inductance value LbSelecting, connect and adjust reactor makes the actual inductance amount and the compensation inductance of reactor
Amount LbCorrespondence；
S6, basisTotal capacitance value is calculated, wherein, f is the frequency of experiment power supply, LbInductance is repaid for described
Amount；
S7, according to Cb=Cz- C obtains compensating electric capacity amount, wherein, CzIt is the total capacitance value, C is the electric capacity of the equipment under test
Amount；
S8, connection and adjustment capacitor, make total capacity value and the compensating electric capacity amount pair for calculating after capacitor connection
Should；
S9, switch on power, complete pressure test.
2. method according to claim 1, it is characterised in that：The step S1 connection equipment includes：Power control unit
It is flexibly connected by connecting line with boosting unit, the boosting unit is flexibly connected with the compensating unit by connecting line, institute
State compensating unit to be connected with equipment under test.
3. method according to claim 1, it is characterised in that：Step S2 obtains capacitance C of equipment under test to be included
According to tabling look-up or on-the-spot test draws capacitance C of the equipment under test.
4. method according to claim 1, it is characterised in that：Make described in the step S5 actual inductance amount of reactor with
The actual inductance amount that the compensation inductance value Lb corresponds to reactor is equal or close with the compensation inductance value Lb.
5. method according to claim 4, it is characterised in that：The close scope is -0.1mH ~+1mH.
6. method according to claim 1, it is characterised in that：Total capacity value described in step S8 and the institute for calculating
Stating compensating electric capacity amount, to correspond to total capacity value equal or close with the compensating electric capacity amount for calculating.
7. method according to claim 6, it is characterised in that：The close scope is -0.1PF ~+1PF.
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| CN201611132413.0A CN106597234A (en) | 2016-12-09 | 2016-12-09 | Parallel elementary-error compensation power-frequency voltage-withstand test method |
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| CN201611132413.0A CN106597234A (en) | 2016-12-09 | 2016-12-09 | Parallel elementary-error compensation power-frequency voltage-withstand test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521339A (en) * | 2018-11-27 | 2019-03-26 | 汪锐 | Based on the non-power frequency parallel resonance pressure resistant test method compensated entirely |
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| CN101464489A (en) * | 2009-01-21 | 2009-06-24 | 中国第一冶金建设有限责任公司 | Industrial frequency inductance-regulation resonance pressure-resistant method |
| CN201298061Y (en) * | 2008-11-17 | 2009-08-26 | 中冶东北建设有限公司电气安装工程公司 | Alternating-current frequency conversion resonant vibration overpressure resistant device |
| CN201335872Y (en) * | 2009-01-21 | 2009-10-28 | 中国第一冶金建设有限责任公司 | Power-frequency inductance-change resonance voltage-withstanding testing device |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| CN105388401A (en) * | 2015-10-26 | 2016-03-09 | 云南电网有限责任公司电力科学研究院 | Novel cable oscillation wave partial discharge detection system |
| CN205608139U (en) * | 2016-04-13 | 2016-09-28 | 云南电网有限责任公司电力科学研究院 | Change of current becomes partial discharge test device |
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2016
- 2016-12-09 CN CN201611132413.0A patent/CN106597234A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298061Y (en) * | 2008-11-17 | 2009-08-26 | 中冶东北建设有限公司电气安装工程公司 | Alternating-current frequency conversion resonant vibration overpressure resistant device |
| CN101464489A (en) * | 2009-01-21 | 2009-06-24 | 中国第一冶金建设有限责任公司 | Industrial frequency inductance-regulation resonance pressure-resistant method |
| CN201335872Y (en) * | 2009-01-21 | 2009-10-28 | 中国第一冶金建设有限责任公司 | Power-frequency inductance-change resonance voltage-withstanding testing device |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| CN105388401A (en) * | 2015-10-26 | 2016-03-09 | 云南电网有限责任公司电力科学研究院 | Novel cable oscillation wave partial discharge detection system |
| CN205608139U (en) * | 2016-04-13 | 2016-09-28 | 云南电网有限责任公司电力科学研究院 | Change of current becomes partial discharge test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109521339A (en) * | 2018-11-27 | 2019-03-26 | 汪锐 | Based on the non-power frequency parallel resonance pressure resistant test method compensated entirely |
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Application publication date: 20170426 |