CN104111402B - The Wiring detection method of the cross interconnected system of a kind of power cable and device - Google Patents
The Wiring detection method of the cross interconnected system of a kind of power cable and device Download PDFInfo
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- CN104111402B CN104111402B CN201410377464.4A CN201410377464A CN104111402B CN 104111402 B CN104111402 B CN 104111402B CN 201410377464 A CN201410377464 A CN 201410377464A CN 104111402 B CN104111402 B CN 104111402B
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- 238000007405 data analysis Methods 0.000 claims description 6
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Abstract
The Wiring detection method of the cross interconnected system of a kind of power cable, it is characterised in that include following sequential steps: 1) in A, B, C phase of power cable sheath head end, apply the first different input voltage V respectivelyA, the second input voltage VBWith the 3rd input voltage VC；Wherein the first input voltage VA, the second input voltage VBFor positive voltage, and VA>VB, the 3rd input voltage VC=0；A, B, C phase of power cable sheath end is measured the first output voltage signal V respectivelyA1, the second output voltage signal VB1With the 3rd output voltage signal VC1；And the voltage V between the A phase of power cable sheath end and B phaseAB, voltage V between A phase and C phaseAC.Voltage V between the A phase of the power cable sheath end that measurement is obtained and B phaseAB, voltage V between A phase and C phaseACSet up logic corresponding relation with the theoretical value being normally connected, thus judge that the wiring of system is the most correct.
Description
Technical field
The present invention relates to the detection field of power equipment, particularly relate to the wiring of the cross interconnected system of power cable
Detection.
Background technology
The cross interconnected system of power cable is the earthing mode that single-core high-voltage cable uses, it is therefore an objective to reduce ground connection
Circulation, its method is that an earth-return circuit is intersected by three-phase single-core cable so that it is total induced voltage phase
Offset mutually, thus reduce grounding circulation.General employing insulation intermediate connector realizes with cross interconnected case.
If cross interconnected system wiring is wrong, circulation in Power Cable Running Process can be caused excessive, thus draw
Send out cable metal sheath overheated, cause cable fault.Owing to using in the middle of the power cable of cross interconnected system
Joint is totally enclosed type, and due to a variety of causes such as design, construction, each producer joint model differences.Joint
Cannot check after construction inside and outside the coaxial cable that joint is drawn, newly whether wiring is correct.Cause cross interconnected
System wiring is wrong.Additionally, use the cable length of cross interconnected system longer, general one group cross interconnected
The cable length of system is all at more than 1kM, and segmentation checks loaded down with trivial details, and needs to remove cross interconnected system and carry out
Detection, after easily causing recovery, wiring is wrong.
Summary of the invention
The technical problem to be solved is to provide the wiring inspection of the cross interconnected system of a kind of power cable
Survey method, on the premise of need not removing cross interconnected system, the wiring to system detects, convenient fast
Prompt.
Secondary technical problem to be solved by this invention is to provide a kind of electric power electricity making and designing in aforementioned manners
The wiring testing device of the cross interconnected system of cable.
In order to solve above-mentioned technical problem, the invention provides connecing of the cross interconnected system of a kind of power cable
Line detecting method, including following sequential steps:
1) in A, B, C phase of power cable sheath head end, the first different input voltage V is applied respectivelyA、
Second input voltage VBWith the 3rd input voltage VC；Wherein the first input voltage VA, the second input voltage VB
For positive voltage, and VA>VB, the 3rd input voltage VC=0；
2) in A, B, C phase of power cable sheath end, the first output voltage signal V is measured respectivelyA1、
Second output voltage signal VB1With the 3rd output voltage signal VC1；And the A phase of power cable sheath end
With the voltage V between B phaseAB, voltage V between A phase and C phaseAC；
3) if described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output voltage
Signal VC1In two be positive voltage, another is 0, then judge power cable sheath connect cable without broken string,
The intact nothing of cross interconnected connecting plate is missed；
4) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedABFor positive electricity
Pressure, voltage V between A phase and C phaseACFor negative voltage, then just judging the cross interconnected system wiring of power cable
Really；And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A phase-B phase；
5) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedABFor negative electricity
Pressure, voltage V between A phase and C phaseACFor negative voltage, then just judging the cross interconnected system wiring of power cable
Really；And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B phase-A phase；
6) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedAB, A phase with
Voltage V between C phaseACIt is not belonging to the situation of step 4 or step 5, then judges that power cable is cross interconnected
System wiring mistake.
A kind of wiring testing device of the cross interconnected system of power cable, including:
Voltage signal generator, described voltage signal generator is in A, B, C phase of power cable sheath head end
Upper apply the first different input voltage V respectivelyA, the second input voltage VBWith the 3rd input voltage VC；Its
In the first input voltage VA, the second input voltage VBFor positive voltage, and VA>VB, the 3rd input voltage VC=0；
Voltage sampling sensor, described voltage sampling sensor is in A, B, C phase of power cable sheath end
Upper measure the first output voltage signal V respectivelyA1, the second output voltage signal VB1With the 3rd output voltage signal
VC1；And the voltage V between the A phase of power cable sheath end and B phaseAB, electricity between A phase and C phase
Pressure VAC；
Single-chip microcomputer, described single-chip microcomputer receives data measured by described voltage sampling sensor, and carry out as
Lower data analysis:
If described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output voltage signal
VC1In two be positive voltage, another is 0, then judge power cable sheath connect cable without broken string, intersect
The interconnection intact nothing of connecting plate is missed；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABFor positive voltage,
Voltage V between A phase with C phaseACFor negative voltage, then judge that the cross interconnected system wiring of power cable is correct；
And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A phase-B phase；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABFor negative voltage,
Voltage V between A phase with C phaseACFor negative voltage, then judge that the cross interconnected system wiring of power cable is correct；
And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B phase-A phase；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedAB, A phase and C
Voltage V between XiangACIt is not belonging to above-mentioned two kind situation, then judges the cross interconnected system wiring of power cable
Mistake；
Display, the result obtained by described single-chip data analysis is shown by described display.
Compared to prior art, technical scheme possesses following beneficial effect:
1. the Wiring detection method of the cross interconnected system of a kind of power cable that the present invention provides, it is not necessary to will hand over
Fork interacted system segmentation is removed and is measured；
2. may determine that and whether cross system exists broken string or wiring error.
3. threephase cable sheath is separately formed loop, and antijamming capability is strong, to measuring knot under high-power station's environment
The most noiseless.
4. sampling result is carried out intelligent analysis.
Accompanying drawing explanation
Fig. 1 is the wiring testing device connection that the present invention is preferable to carry out the middle cross interconnected system of a kind of power cable
Schematic diagram；
Fig. 2 is the schematic diagram of the cross interconnected mode of connection one in the preferred embodiment of the present invention；
Fig. 3 is the schematic diagram of the cross interconnected mode of connection two in the preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
A kind of Wiring detection method of the cross interconnected system of power cable, including following sequential steps:
1) in A, B, C phase of power cable sheath head end, the first different input voltage V is applied respectivelyA、
Second input voltage VBWith the 3rd input voltage VC；Wherein the first input voltage VA, the second input voltage VB
For positive voltage, and VA>VB, the 3rd input voltage VC=0；
2) in A, B, C phase of power cable sheath end, the first output voltage signal V is measured respectivelyA1、
Second output voltage signal VB1With the 3rd output voltage signal VC1；And the A phase of power cable sheath end
With the voltage V between B phaseAB, voltage V between A phase and C phaseAC；
3) if described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output voltage
Signal VC1In two be positive voltage, another is 0, then judge power cable sheath connect cable without broken string,
The intact nothing of cross interconnected connecting plate is missed；
4) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedABFor positive electricity
Pressure, voltage V between A phase and C phaseACFor negative voltage, then just judging the cross interconnected system wiring of power cable
Really；And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A phase-B phase；
5) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedABFor negative electricity
Pressure, voltage V between A phase and C phaseACFor negative voltage, then just judging the cross interconnected system wiring of power cable
Really；And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B phase-A phase；
6) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedAB, A phase with
Voltage V between C phaseACIt is not belonging to the situation of step 4 or step 5, then judges that power cable is cross interconnected
System wiring mistake.
Reference Fig. 1, the wiring testing device of the cross interconnected system of a kind of power cable, including:
Voltage signal generator, described voltage signal generator is in A, B, C phase of power cable sheath head end
Upper apply the first different input voltage V respectivelyA, the second input voltage VBWith the 3rd input voltage VC；Its
In the first input voltage VA, the second input voltage VBFor positive voltage, and VA>VB, the 3rd input voltage VC=0；
Voltage sampling sensor, described voltage sampling sensor is in A, B, C phase of power cable sheath end
Upper measure the first output voltage signal V respectivelyA1, the second output voltage signal VB1With the 3rd output voltage signal
VC1；And the voltage V between the A phase of power cable sheath end and B phaseAB, electricity between A phase and C phase
Pressure VAC；
Single-chip microcomputer, described single-chip microcomputer receives data measured by described voltage sampling sensor, and carry out as
Lower data analysis:
If described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output voltage signal
VC1In two be positive voltage, another is 0, then judge power cable sheath connect cable without broken string, intersect
The interconnection intact nothing of connecting plate is missed；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABFor positive voltage,
Voltage V between A phase with C phaseACFor negative voltage, then judge that the cross interconnected system wiring of power cable is correct；
And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A phase-B phase；As shown in Figure 2.
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABFor negative voltage,
Voltage V between A phase with C phaseACFor negative voltage, then judge that the cross interconnected system wiring of power cable is correct；
And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B phase-A phase；As shown in Figure 2.
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedAB, A phase and C
Voltage V between XiangACIt is not belonging to above-mentioned two kind situation, then judges the cross interconnected system wiring of power cable
Mistake；
Display, the result obtained by described single-chip data analysis is shown by described display.
The above, be only present pre-ferred embodiments, and not the technical scope to the present invention is made any
Limit, therefore every any trickle amendment above example made according to the technical spirit of the present invention, equivalent becomes
Change and modify, all still falling within the range of technical solution of the present invention.
Claims (2)
1. the Wiring detection method of the cross interconnected system of power cable, it is characterised in that include following
Sequential steps:
1) in A, B, C phase of power cable sheath head end, the first different input electricity is applied respectively
Pressure VA, the second input voltage VBWith the 3rd input voltage VC；Wherein the first input voltage VA, second
Input voltage VBFor positive voltage, and VA>VB, the 3rd input voltage VC=0；
2) in A, B, C phase of power cable sheath end, the first output voltage signal is measured respectively
VA1, the second output voltage signal VB1With the 3rd output voltage signal VC1；And power cable sheath end
Voltage V between A phase and the B phase of endAB, voltage V between A phase and C phaseAC；
3) if described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output
Voltage signal VC1In two be positive voltage, another is 0, then judge power cable sheath connect electricity
Cable is missed without broken string, the intact nothing of cross interconnected connecting plate；
4) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedAB
For the voltage V between positive voltage, A phase and C phaseACFor negative voltage, then judge that power cable intersects mutually
Connection system wiring is correct；And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A
Phase-B phase；
5) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedAB
For the voltage V between negative voltage, A phase and C phaseACFor negative voltage, then judge that power cable intersects mutually
Connection system wiring is correct；And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B
Phase-A phase；
6) if the voltage V measured between A phase and the B phase of described power cable sheath end arrivedAB、A
Voltage V between phase and C phaseACIt is not belonging to the situation of step 4 or step 5, then judges power cable
Cross interconnected system wiring mistake.
2. the wiring testing device of the cross interconnected system of power cable, it is characterised in that including:
Voltage signal generator, described voltage signal generator the A of power cable sheath head end, B,
The first different input voltage V is applied respectively in C phaseA, the second input voltage VBWith the 3rd input electricity
Pressure VC；Wherein the first input voltage VA, the second input voltage VBFor positive voltage, and VA>VB, the
Three input voltage VC=0；
Voltage sampling sensor, described voltage sampling sensor the A of power cable sheath end, B,
The first output voltage signal V is measured respectively in C phaseA1, the second output voltage signal VB1With the 3rd output
Voltage signal VC1；And the voltage V between the A phase of power cable sheath end and B phaseAB, A phase with
Voltage V between C phaseAC；
Single-chip microcomputer, described single-chip microcomputer receives the data measured by described voltage sampling sensor, goes forward side by side
The following data analysis of row:
If described first output voltage signal VA1, the second output voltage signal VB1With the 3rd output electricity
Pressure signal VC1In two be positive voltage, another is 0, then judge power cable sheath connect cable
Miss without broken string, the intact nothing of cross interconnected connecting plate；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABFor just
Voltage V between voltage, A phase and C phaseACFor negative voltage, then judge the cross interconnected system of power cable
System wiring is correct；And the mode of connection is A phase-B phase-C phase, B phase-C phase-A phase, C phase-A phase-B
Phase；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedABIt is negative
Voltage V between voltage, A phase and C phaseACFor negative voltage, then judge the cross interconnected system of power cable
System wiring is correct；And the mode of connection is A phase-C phase-B phase, B phase-A phase-C phase, C phase-B phase-A
Phase；
If the voltage V measured between A phase and the B phase of the described power cable sheath end arrivedAB、A
Voltage V between phase and C phaseACIt is not belonging to above-mentioned two kind situation, then judges that power cable intersects mutually
Contact system wiring error；
Display, the result obtained by described single-chip data analysis is shown by described display.
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| CN106841890B (en) * | 2016-12-01 | 2023-05-05 | 三峡大学 | Fault diagnosis method in cross-connection box based on grounding current |
| CN108680816B (en) * | 2018-03-28 | 2019-07-23 | 国网天津市电力公司 | A kind of high-tension cable cross connection grounding system electrification checking method |
| CN108680815A (en) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | Electrification capacity checking device for the cross interconnected system of high-tension cable grounding box |
| CN113640710B (en) * | 2021-08-13 | 2024-04-09 | 深圳市新威尔电子有限公司 | Automatic detection method for channel crossing |
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| KR100889929B1 (en) * | 2007-06-20 | 2009-03-24 | 한국수력원자력 주식회사 | Structure and one side earth section of under ground cables |
| CN103698653B (en) * | 2013-12-30 | 2016-05-04 | 国家电网公司 | Single-core power cables sheath ground-fault detection system and the method measured based on circulation |
| CN103792467A (en) * | 2014-02-25 | 2014-05-14 | 国家电网公司 | High-voltage crosslinked polyethylene cable grounding current mechanism and fault analysis method |
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