CN104111402A - Wiring detection method and device for electric power cable cross interconnecting system - Google Patents
Wiring detection method and device for electric power cable cross interconnecting system Download PDFInfo
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- CN104111402A CN104111402A CN201410377464.4A CN201410377464A CN104111402A CN 104111402 A CN104111402 A CN 104111402A CN 201410377464 A CN201410377464 A CN 201410377464A CN 104111402 A CN104111402 A CN 104111402A
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Abstract
Disclosed is a wiring detection method for an electric power cable cross interconnecting system. The method is characterized by including the following steps that (1) different first input voltage VA, second input voltage VB and third input voltage VC are exerted on A, B and C phases of the head end of an electric power cable sheath respectively; the first input voltage VA and the second input voltage VB are positive voltages, the VA is larger than VB, and the third input voltage VC is equal to 0; a first output voltage signal VA1, a second input voltage signal VB1 and a third input voltage signal VC1 are measured respectively on the A, B and C phases of the tail end of the electric power cable sheath; voltage VAB between the A and B phases and voltage VAC between the A and C phases of the tail end of the electric power cable sheath are measured. A logical corresponding relation between a normal connection theoretical value on one hand and the measured voltage VAB between the A and B phases and the measured voltage VAC between the A and C phases of the tail end of the electric power cable sheath on the other hand is established, and thereby, whether system wiring is correct or not can be determined.
Description
Technical field
The present invention relates to the detection field of power equipment, the wiring that relates in particular to the cross interconnected system in electric power Electricity Federation detects.
Background technology
The cross interconnected system of power cable is the earthing mode that single-core high-voltage cable adopts, and object is to reduce grounding circulation, and its method is that a ground loop intersects by three-phase single core cable, its total induced voltage is cancelled out each other, thereby reduce grounding circulation.General insulation intermediate connector and the cross interconnected case of adopting realized.
If cross interconnected system wiring is wrong, can cause in Power Cable Running Process circulation excessive, thereby it is overheated to cause cable metal sheath, causes cable fault.Because the intermediate joint of electric cable that adopts cross interconnected system is totally enclosed type, and due to a variety of causes such as design, construction, each producer joint model differences.After joint construction, cannot check inside and outside the concentric cable that joint draws, newly whether wiring is correct.Cause cross interconnected system wiring wrong.In addition, adopt the cable length of cross interconnected system longer, the cable length of general one group of cross interconnected system is all more than 1kM, and segmentation checks loaded down with trivial details, and need to remove cross interconnected system and detect, and easily causes the rear wiring of recovery wrong.
Summary of the invention
Technical matters to be solved by this invention is to provide the Wiring detection method of the cross interconnected system in a kind of electric power Electricity Federation, removing under the prerequisite of cross interconnected system, the wiring of system is detected, convenient and swift.
Less important technical matters to be solved by this invention is to provide a kind of wiring testing device of the cross interconnected system in electric power Electricity Federation that uses said method design.
In order to solve above-mentioned technical matters, the invention provides the Wiring detection method of the cross interconnected system in a kind of electric power Electricity Federation, comprise following sequential steps:
1) go up mutually and apply respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
2) go up mutually and measure respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
3) if described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
4) if the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to the situation of step 4 or step 5, judge the cross interconnected system wiring mistake in electric power Electricity Federation.
A wiring testing device for the cross interconnected system in electric power Electricity Federation, comprising:
Voltage signal generator, described voltage signal generator is gone up mutually and is applied respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
Voltage sampling sensor, described voltage sampling sensor is gone up mutually and is measured respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
Single-chip microcomputer, described single-chip microcomputer receives the measured data of described voltage sampling sensor, and carries out following data analysis:
If described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
If the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to two kinds of above-mentioned situations, judge the cross interconnected system wiring mistake in electric power Electricity Federation;
Display, the result that described display obtains described single-chip data analysis shows.
Compared to prior art, technical scheme of the present invention possesses following beneficial effect:
1. the Wiring detection method of the cross interconnected system in a kind of electric power Electricity Federation provided by the invention, does not need cross interconnected system segment to remove and measure;
2. can judge in cross system and whether exist and break or wiring error.
3. threephase cable sheath forms separately loop, and antijamming capability is strong, noiseless to measurement result under high-power station's environment.
4. pair sampling result carries out intelligent analysis.
Brief description of the drawings
Fig. 1 is the wiring testing device connection diagram of the cross interconnected system in a kind of electric power Electricity Federation during the present invention preferably implements;
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.
Embodiment
Below the present invention will be further described in conjunction with the accompanying drawings and embodiments.
A Wiring detection method for the cross interconnected system in electric power Electricity Federation, comprises following sequential steps:
1) go up mutually and apply respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
2) go up mutually and measure respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
3) if described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
4) if the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to the situation of step 4 or step 5, judge the cross interconnected system wiring mistake in electric power Electricity Federation.
With reference to figure 1, the wiring testing device of the cross interconnected system in a kind of electric power Electricity Federation, comprising:
Voltage signal generator, described voltage signal generator is gone up mutually and is applied respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
Voltage sampling sensor, described voltage sampling sensor is gone up mutually and is measured respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
Single-chip microcomputer, described single-chip microcomputer receives the measured data of described voltage sampling sensor, and carries out following data analysis:
If described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
If the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to two kinds of above-mentioned situations, judge the cross interconnected system wiring mistake in electric power Electricity Federation;
Display, the result that described display obtains described single-chip data analysis shows.
The above, be only preferred embodiment of the present invention, not technical scope of the present invention imposed any restrictions, therefore any trickle amendment that every foundation technical spirit of the present invention is done above example, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (2)
1. a Wiring detection method for the cross interconnected system in electric power Electricity Federation, is characterized in that comprising following sequential steps:
1) go up mutually and apply respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
2) go up mutually and measure respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
3) if described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
4) if the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to the situation of step 4 or step 5, judge the cross interconnected system wiring mistake in electric power Electricity Federation.
2. a wiring testing device for the cross interconnected system in electric power Electricity Federation, is characterized in that comprising:
Voltage signal generator, described voltage signal generator is gone up mutually and is applied respectively the first different input voltage V at A, B, the C of electric power Electricity Federation sheath head end
a, the second input voltage V
bwith the 3rd input voltage V
c; Wherein the first input voltage V
a, the second input voltage V
bfor positive voltage, and V
a>V
b, the 3rd input voltage V
c=0;
Voltage sampling sensor, described voltage sampling sensor is gone up mutually and is measured respectively the first output voltage signal V at A, B, the C of electric power Electricity Federation sheath end
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1; And the A phase of electric power Electricity Federation sheath end and the B voltage V between mutually
aB, A phase and the C voltage V between mutually
aC;
Single-chip microcomputer, described single-chip microcomputer receives the measured data of described voltage sampling sensor, and carries out following data analysis:
If described the first output voltage signal V
a1, the second input voltage signal V
b1with the 3rd input voltage signal V
c1in two be positive voltage, another is 0, judge electric power Electricity Federation sheath stube cable without broken string, the intact nothing of cross interconnected web joint misses;
If the voltage V between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between positive voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aBfor the voltage V between negative voltage, A phase and C phase
aCfor negative voltage, judge that the cross interconnected system wiring in electric power Electricity Federation 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 between the A phase of the described electric power Electricity Federation sheath end measuring and B phase
aB, A phase and the C voltage V between mutually
aCdo not belong to two kinds of above-mentioned situations, judge the cross interconnected system wiring mistake in electric power Electricity Federation;
Display, the result that described display obtains described single-chip data analysis shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377464.4A CN104111402B (en) | 2014-08-01 | 2014-08-01 | The Wiring detection method of the cross interconnected system of a kind of power cable and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377464.4A CN104111402B (en) | 2014-08-01 | 2014-08-01 | The Wiring detection method of the cross interconnected system of a kind of power cable and device |
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| CN104111402A true CN104111402A (en) | 2014-10-22 |
| CN104111402B CN104111402B (en) | 2016-08-24 |
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| CN106841890A (en) * | 2016-12-01 | 2017-06-13 | 三峡大学 | A kind of cross interconnected case internal fault diagnostic method based on earth current |
| 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 |
| CN108680816A (en) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | A kind of high-tension cable cross connection grounding system electrification checking method |
| CN113640710A (en) * | 2021-08-13 | 2021-11-12 | 深圳市新威尔电子有限公司 | Channel crossing automatic detection method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841890A (en) * | 2016-12-01 | 2017-06-13 | 三峡大学 | A kind of cross interconnected case internal fault diagnostic method based on earth current |
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| 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 |
| CN108680816A (en) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | A kind of high-tension cable cross connection grounding system electrification checking method |
| 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 |
| CN113640710A (en) * | 2021-08-13 | 2021-11-12 | 深圳市新威尔电子有限公司 | Channel crossing automatic detection method |
| 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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