CN106970294A - The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit - Google Patents
The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit Download PDFInfo
- Publication number
- CN106970294A CN106970294A CN201710206989.5A CN201710206989A CN106970294A CN 106970294 A CN106970294 A CN 106970294A CN 201710206989 A CN201710206989 A CN 201710206989A CN 106970294 A CN106970294 A CN 106970294A
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- Prior art keywords
- voltage
- capacitor
- differential pressure
- pressure circuit
- secondary side
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a kind of method of inspection of capacitor differential pressure circuit and verifying attachment; by the way that the earth will be accessed after the both sides terminal x1 in capacitor secondary side circuit and x2 short circuits; a1, a2 wiring point in capacitor secondary side circuit is connected with the protection device on switch cubicle testing terminal, retains the circuit connection being connected with the protection device；And the voltage generator of design specialized to increasing voltage U respectively between differential pressure circuit primary side circuit two ends1And U2Pass through the magnitude of voltage u at the secondary side capacitors differential voltage protection device two ends of high precision collecting measurement device; and compare the measured value with calculating the theoretical voltage u' at obtained capacitor differential voltage protection device two ends; according to default difference threshold; by its size of the difference, the correctness of differential pressure circuit wiring is verified.This method reduces differential pressure circuit to disconnecting line in line process and checking the workload of voltage, it also avoid the risk of wiring error when secondary side circuit misconnection, virtual connection and multiple line.
Description
Technical field
The present invention relates to electrical engineering technical field, the method for inspection of more particularly to a kind of capacitor differential pressure circuit and inspection
Experiment device.
Background technology
Capacitor differential voltage protection extensively should with large value capacitor group, its secondary side circuit wiring correctness is always
The emphasis of capacitor differential pressure circuit verification.The conventional conventional method for disassembling secondary line of capacitor differential voltage protection is verified, the party
The drawbacks of method, is to disconnect line workload greatly, easily the phenomenons such as misconnection, virtual connection line occurs, and this method is not simply failed to during multiple line
The change when polarity, and the correctness and sensitivity of protection device differential pressure logic can not be verified of discharge coil is verified, is being tested
Differential voltage protection misoperation because of loop problem often occurs during receipts, serious consequence is caused.
The content of the invention
The invention provides a kind of method of inspection of capacitor differential pressure circuit and verifying attachment, existing capacitor is which overcomed
Line workload is disconnected in the presence of the line process of differential pressure secondary circuit school greatly, the problems such as occurring misconnection, virtual connection line during multiple line,
The problems such as artificial school line error rate is high is effectively solved, capacitor discharge coil no-load voltage ratio, polarity and correctness can be also verified, protected
The correctness of device differential pressure logic.
The technical solution adopted for the present invention to solve the technical problems is：A kind of method of inspection of capacitor differential pressure circuit,
The capacitor differential pressure circuit includes the wiring of capacitor primary side and capacitor secondary side circuit, and the method for inspection includes following step
Suddenly：
S1：The earth will be accessed after both sides terminal x1 in capacitor secondary side circuit and x2 short circuits, by capacitor secondary side
A1, a2 wiring point in loop is connected with the protection device on switch cubicle testing terminal；
S2：Using specialized voltages generating means, apply voltage U between tap A1, X of capacitor primary side wiring1,
Apply voltage U between tap A2, X of capacitor primary side wiring2；
S3：Using high precision collecting device, the magnitude of voltage u at measurement capacitor differential voltage protection device two ends；
S4：Utilize the theoretical secondary side magnitude of voltage u between x1 and a1 terminals in software calculation procedure S31', x2 and a2 terminals
Between theoretical secondary side magnitude of voltage u2' and capacitor differential voltage protection device two ends theoretical voltage value u'；
S5：By the reason at software computing device two ends in the magnitude of voltage u and S4 at protection device two ends measured in step S3
Size comparison is carried out by magnitude of voltage u', by difference threshold set in advance, differential pressure is verified according to size of the difference during its comparison
The correctness of circuit connection.
Preferably, increased voltage U in the step S21、U2Three pressurizations, and U during pressurization are at least carried out respectively1、U2
Both phase is identical, amplitude is different.
Preferably, in the step S4U '=u1′-u2′。
A kind of verifying attachment of capacitor differential pressure circuit, including portable calibration equipment, the electricity of the Portable Check Out Unit
Pressure output and capacitor primary side connection, the control source of the portable verifying attachment are connected with capacitor secondary side circuit；
And the portable calibration equipment also includes specialized voltages generator, power supply box, voltage data recorder and high precision collecting
Device；The specialized voltages generator is connected with capacitor primary side, high precision collecting device one end and the secondary side terminal of capacitor
Connection,
Preferably, it is industrial frequency AC 220V that the Special electric depressor input, which is rated voltage, output end for it is multiple not
Deng the adjustable voltage output port of range, output is adjustable, different size of alternating voltage.
Preferably, the portable calibration equipment also include man-machine dialog interface, and if the man-machine dialog interface provided with
Dry multifunctional button.
Preferably, the Portable Check Out Unit also includes software calculating, data analysis, data record and storage part
Point.
Compared to prior art, the invention has the advantages that：
1. the method for inspection of the present invention is simple and easy to apply, pressurizeed by the primary side circuit to capacitor body, and using not
Magnitude of voltage in same pressuring method, measurement secondary side circuit between each terminal, compares with calculated value, verifies secondary side
The correctness of circuit connection, and provide corresponding prompting, at the same also effectively reduce differential pressure circuit in line process disconnect line, it is right
Line workload.
2. the method that the method for inspection of the present invention is pressurizeed by primary side, it is determined that discharge coil pole under the differential pressure mode of connection
Property, the correlation of secondary line, the method that secondary voltage is experienced in protection device side can verify no-load voltage ratio, the polarity of discharge coil,
And it can also effectively verify the correctness of protection device action.
3. the method for inspection of the present invention is pressurizeed by instrument, software calculated value is proofreaded with measured value, differentiates circuit connection
Correctness, can effectively reduce and disconnect line work, check the workloads such as voltage, can also reduce secondary circuit misconnection, virtual connection etc. is asked
Topic, the risk of wiring error during multiple line.
The present invention is described in further detail below in conjunction with drawings and Examples；But a kind of capacitor differential pressure of the present invention
The method of inspection and verifying attachment in loop are not limited to embodiment.
Brief description of the drawings
The capacitor differential pressure circuit that Fig. 1 is the present invention examines electrical block diagram.
Embodiment
Embodiment, shown in Figure 1, a kind of method of inspection of capacitor differential pressure circuit of the invention, the capacitor
Differential pressure circuit includes the wiring of capacitor primary side and capacitor secondary side circuit, and primary side is connected respectively by two groups of electric capacity bodies 3
Shunt capacitor discharge coil 1 is distinguished after resistance R, then current-limiting reactor 7 is constituted, capacitor secondary side circuit includes both sides terminal
X1, x2 and two wiring point a1, a2, the method for inspection comprise the following steps：
S1：The earth will be accessed after both sides terminal x1 in capacitor secondary side circuit and x2 short circuits, by capacitor secondary side
A1, a2 wiring point in loop is connected with the capacitor differential voltage protection device 2 on switch cubicle testing terminal (not embodied in figure), this
Process need not disassemble the primary side wiring of capacitor body 3 and secondary side circuit；
S2：Apply voltage U between tap A1, X of capacitor primary side wiring1, in taking out for capacitor primary side wiring
Apply voltage U between head A2, X2, using special test wire and test wire wire clamp during pressurization, it is ensured that connection can in pressure process
Lean on, and ensure the U of addition1、U2Phase is consistent, fixed U1Amplitude is constant, makes U2Voltage be respectively U1、U1/ 2,0 three differences
Pressurization value is tested, and test data is shown in Table 1；
S3：Using high precision collecting device, the magnitude of voltage u at the two ends of measurement capacitor differential voltage protection device 2；
S4：Utilize the theoretical voltage value u between x1 and a1 terminals in software calculation procedure S31', the reason between x2 and a2 terminals
By magnitude of voltage u2' and capacitor differential voltage protection device two ends theoretical voltage value u', calculation formula is respectively U'=u1'-u2', wherein KUThe voltage change ratio coefficient of capacitor body, result of calculation is shown in Table 1；
S5：Software in the magnitude of voltage u and S4 at protection device two ends measured in step S3 is calculated into protection device two ends
Theoretical voltage value u' carry out size comparison, relatively before pre-set both comparison reasonable error threshold value, pass through difference
Size verifies the correctness of differential pressure circuit wiring.
In the present embodiment, a kind of verifying attachment of capacitor differential pressure circuit, including portable calibration equipment 6, this is portable
Connected between the voltage output of verifying attachment 6 and capacitor primary side wiring using test wire 4, the electricity of the portable verifying attachment 6
Connected between pressure input and capacitor secondary side circuit using test wire 5；And the portable calibration equipment 6；Also include special
With voltage generator (not embodied in figure), power supply box (not embodied in figure), voltage data recorder (not embodied in figure) and high-precision
Spend harvester (not embodied in figure)；The specialized voltages generator is connected with capacitor primary side wiring, high precision collecting device
One end is connected with the secondary side terminal of capacitor, and the other end is connected with voltage data recorder, and power supply box is adapted to common transformer station
Maintenance, power supply is provided for whole checkout procedure, and voltage data recorder is responsible for recording, store, inquire about and reading whole experiment
During involved magnitude of voltage.
In the present embodiment, the Special electric depressor input is that rated voltage is industrial frequency AC 220V, and voltage generator is defeated
Go out end output exchangeU1、2U1、3U1Etc. the voltage of multiple adjustable inequality journeys, it can be adjusted as needed during inspection；It is described just
Taking formula calibration equipment 6 also includes man-machine dialog interface (not embodied in figure) and software calculating section (not embodied in figure), and this is man-machine
Dialog interface be provided with some multifunctional buttons (not embodied in figure), can input capacitor discharge coil no-load voltage ratio, software calculating section,
Data analysis, data record and storage part, for calculating the theoretical voltage value u between x1 the and a1 terminals1', x2 and a2
Theoretical voltage value u between terminal2' and capacitor differential voltage protection device two ends theoretical voltage value u', and by the theory electricity
Pressure value is compared with measured value u.
In the present embodiment, in order to verify the correctness of the above-mentioned method of inspection, two groups of increase controls the capacitor respectively
Differential voltage protection device 2 acts the situation with being failure to actuate, and is specially to apply electricity between tap A1, X of capacitor primary side wiring
Press Ux1, apply voltage U between tap A2, X of capacitor primary side wiringx2, 4 and 5 (data are shown in Table 2) of test are as tested,
Test 4 is situation when capacitor differential voltage protection device 2 is failure to actuate, and test 5 is feelings when capacitor differential voltage protection device 2 is acted
Condition；Wherein, Ux1=0.95UZKU, Ux2=1.05UZKU, KUThe voltage change ratio coefficient of capacitor body, UZTo dispatch the difference adjusted
Press the setting valve of protection act；Theoretical voltage value u in two groups of test groups between x1 and a1 terminals1', between x2 and a2 terminals
Theoretical voltage value u2' and the theoretical voltage value u' at the two ends of capacitor differential voltage protection device 2 be shown in Table 2 respectively；
The U of table 11、U2And theoretical voltage value
The check test group data of table 2
If above-mentioned method of inspection test result is that circuit connection is correct, testing 4 capacitor differential voltage protection devices 2 should be reliable
It is failure to actuate, 5 capacitor differential voltage protection devices 2 of test answer action message.
Above-described embodiment is only used for further illustrating the method for inspection and the inspection of a kind of capacitor differential pressure circuit of the present invention
Device, but the invention is not limited in embodiment, it is any that every technical spirit according to the present invention is made to above example
Simple modification, equivalent variations and modification, each fall within the protection domain of technical solution of the present invention.
Claims (7)
1. a kind of method of inspection of capacitor differential pressure circuit, the capacitor differential pressure circuit includes the wiring of capacitor primary side and electricity
Container secondary side circuit, the method for inspection comprises the following steps：
S1：The earth will be accessed after both sides terminal x1 in capacitor secondary side circuit and x2 short circuits, by capacitor secondary side circuit
In a1, a2 wiring point be connected with the protection device on switch cubicle testing terminal；
S2：Using specialized voltages generating means, apply voltage U between tap A1, X of capacitor primary side wiring1, in electric capacity
Apply voltage U between tap A2, X of device primary side wiring2；
S3：Using high precision collecting device, the magnitude of voltage u at measurement capacitor differential voltage protection device two ends；
S4：Utilize the theoretical secondary side magnitude of voltage u between x1 and a1 terminals in software calculation procedure S31', between x2 and a2 terminals
Theoretical secondary side magnitude of voltage u2' and capacitor differential voltage protection device two ends theoretical voltage value u'；
S5：By the theory electricity at software computing device two ends in the magnitude of voltage u and S4 at protection device two ends measured in step S3
Pressure value u' carries out size comparison, and by difference threshold set in advance, differential pressure circuit is verified according to size of the difference during its comparison
The correctness of wiring.
2. a kind of method of inspection of capacitor differential pressure circuit according to claim 1, it is characterised in that：In the step S2
Increased voltage U1、U2Three pressurizations, and U during pressurization are at least carried out respectively1、U2Both phase is identical, amplitude is different.
3. a kind of method of inspection of capacitor differential pressure circuit according to claim 1, it is characterised in that：In the step S4U '=u1′-u2′。
4. the verifying attachment of a kind of capacitor differential pressure circuit according to claim 1, it is characterised in that including portable school
Experiment device, the voltage output of the Portable Check Out Unit is connected with capacitor primary side wiring, the voltage of the portable verifying attachment
Input is connected with capacitor secondary side circuit；And the portable calibration equipment also include specialized voltages generator, power supply box,
Voltage data recorder and high precision collecting device；The specialized voltages generator is connected with capacitor primary side, high precision collecting
Device one end is connected with the secondary side terminal of capacitor.
5. a kind of verifying attachment of capacitor differential pressure circuit according to claim 5, it is characterised in that：The specialized voltages
Device input is that rated voltage is industrial frequency AC 220V, and output end is the adjustable voltage output port of multiple inequality journeys, output
It is adjustable, different size of alternating voltage.
6. a kind of verifying attachment of capacitor differential pressure circuit according to claim 5, it is characterised in that：The portable school
Experiment device also includes man-machine dialog interface, and the man-machine dialog interface is provided with some multifunctional buttons.
7. a kind of verifying attachment of capacitor differential pressure circuit according to claim 5, it is characterised in that：The portable inspection
Experiment device also includes software calculating, data analysis, data record and storage part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206989.5A CN106970294A (en) | 2017-03-31 | 2017-03-31 | The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206989.5A CN106970294A (en) | 2017-03-31 | 2017-03-31 | The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106970294A true CN106970294A (en) | 2017-07-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710206989.5A Pending CN106970294A (en) | 2017-03-31 | 2017-03-31 | The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106970294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933569A (en) * | 2021-10-25 | 2022-01-14 | 广西电网有限责任公司崇左供电局 | Three-tap discharge coil differential pressure detection device and method |
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| CN2612135Y (en) * | 2003-03-14 | 2004-04-14 | 福建省电力勘测设计院 | Differential pressure regulation protector of capacitor bank |
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| CN1531159A (en) * | 2003-03-14 | 2004-09-22 | 福建省电力勘测设计院 | Differential pressure regulating protector of resistor set |
| CN2739861Y (en) * | 2004-09-22 | 2005-11-09 | 北京震宇成套电气设备集团 | 35 KV reactive compensating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933569A (en) * | 2021-10-25 | 2022-01-14 | 广西电网有限责任公司崇左供电局 | Three-tap discharge coil differential pressure detection device and method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |
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| RJ01 | Rejection of invention patent application after publication |