CN102288861A - High-voltage power cable fault warning device - Google Patents
High-voltage power cable fault warning device Download PDFInfo
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- CN102288861A CN102288861A CN2011101948258A CN201110194825A CN102288861A CN 102288861 A CN102288861 A CN 102288861A CN 2011101948258 A CN2011101948258 A CN 2011101948258A CN 201110194825 A CN201110194825 A CN 201110194825A CN 102288861 A CN102288861 A CN 102288861A
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- power cable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention relates to a high-voltage power cable fault warning device, which comprises three fault detection terminals and a fault warning host, wherein the three fault detection terminals are respectively arranged on three phases of crossed interconnection plates in a high-voltage power cable crossed interconnection grounding box to be used for detecting phase short circuit faults; and the fault warning host is arranged on a panel of the high-voltage power cable grounding box, and three input ends of the fault warning host are connected with output ends of the three fault detection terminals to be used for receiving and displaying fault warning information transmitted by each fault detection terminal. The device has a reasonable design, the fault detection terminals can automatically detect the phase short circuit faults of high-voltage power cables, the warning function is realized through the fault warning host, cable faults can be accurately determined within a certain crossed interconnection section by arranging the device in each group of crossed interconnection sections, reliable references are provided for cable fault inquiry, the fault rush repair efficiency is improved, the power cut time is greatly shortened, and the device has the characteristics of fastness, accuracy, safety, convenience and the like.
Description
Technical field
The invention belongs to the electric power network field, especially a kind of high voltage power cable accident warning device.
Background technology
At present; high voltage power cable running environment goes from bad to worse along with the increase of large-scale basis Facilities Construction becomes; the application of construction technology such as trombone slide, direct-burried in addition brings great potential safety hazard for the high voltage power cable safe operation, and the high voltage power cable failure rate also is the trend of rising thereupon.When 110 kilovolts and above electric pressure high voltage power cable break down, fault inquiry, localization of fault need for a long time consuming time, especially cross interconnected section more cable line, when break down in underground trombone slide position below 5 meters, it is very big to search this trouble spot difficulty, cause the cable fault query time long, influence the efficient of breakdown repair, cause power off time long.Though can carry out fault detect by the operational failure device for addressing at 35 kilovolts and following power circuit, it utilizes the mutation method of temporary impact electric current to judge line fault, but this pick-up unit but can not be realized fault detection capability for the high voltage power cable of 110 kilovolts that all are laid in underground and above electric pressure.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of high voltage power cable accident warning device that can detect the high voltage power cable fault quickly and accurately is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of high voltage power cable accident warning device, comprise three fault detect terminals and a fault alarm main frame, three fault detect terminals are installed in respectively on the interior cross interconnected web joint of three-phase of the cross interconnected ground connection case of high voltage power cable and are used to detect phase fault; The fault alarm main frame is installed on the high voltage power cable ground connection case panel, and three input ends of fault alarm main frame are connected with the output terminal of three fault detect terminals and are used to receive and show the fault alarm information of each fault detect terminal transmission.
And; described fault detect terminal comprises induction by current coil, holding circuit, current sample and threshold values decision circuitry and the fiber-optic signal output circuit that is connected in turn; the induction by current coil securely is socketed on the cross interconnected web joint of three-phase in the cross interconnected ground connection case of high voltage power cable, and the output terminal of fiber-optic signal output circuit connects a single hole bolt and as optical fiber interface.
And, described fault alarm main frame comprises microprocessor, power module, fiber-optic signal receiving processing module, display module, power module is connected with other modules for each module provides power supply, and microprocessor is connected with display module with the fiber-optic signal receiving processing module by the I/O interface.
And described microprocessor also connects a reseting module, and the reset button that is provided with on this reseting module and the fault alarm main frame is connected.
And described microprocessor also connects a RS485 remote communication module, and the RS485 interface that is provided with on this RS485 remote communication module and the fault alarm main frame is connected.
And described fiber-optic signal receiving processing module adopts the photosensitive tube device, and described display module is the one group of pilot lamp that is provided with on the fault alarm main frame.
Advantage of the present invention and good effect are:
The present invention is reasonable in design, the fault detect terminal is installed on 110 kilovolts and the above electric pressure high voltage power cable oversheath, the fault detect terminal can detect faradic variation automatically and realize warning function by the fault alarm main frame, in each organizes cross interconnected section this device being installed just can be determined to cable fault in a certain cross interconnected section exactly, inquiry provides reliable basis for cable fault, improved the efficient of breakdown repair, shortened power off time greatly, have fast, accurately, characteristics such as safety, convenience.
Description of drawings
Fig. 1 is a connection diagram of the present invention;
Fig. 2 is the circuit block diagram of fault sense terminals;
Fig. 3 is the circuit block diagram of fault alarm host machine.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described:
A kind of high voltage power cable accident warning device, as shown in Figure 1, comprise three fault detect terminals 1 and a fault alarm main frame 4, three fault detect terminals are installed in the phase fault that is used to monitor on the cross interconnected ground connection case of high voltage power cable interior A, B, the cross interconnected web joint of C three-phase between A, B, the C three-phase respectively, when the fault detect terminal detected phase fault, the output port by the fault detect terminal was transferred to fault-signal on the fault alarm main frame; The fault alarm main frame is installed on the high voltage power cable ground connection case panel, three input ends 3 of fault alarm main frame are connected by the output terminal of optical fiber 2 with three fault detect terminals, the fault detect terminal that is about to the corresponding A phase is connected with input end L1, the fault detect terminal of corresponding B phase is connected with input end L2, the fault detect terminal of corresponding C phase is connected with input end L3, the fault alarm main frame receives the fault alarm information of each fault detect terminal transmission, and realize showing on the spot the ruuning situation and the fault alarm indication of each bar circuit providing foundation during on site fault clearing.
As shown in Figure 2; the fault detect terminal comprises the induction by current coil that is connected in turn; holding circuit; current sample and threshold values decision circuitry and fiber-optic signal output circuit; the induction by current coil securely is socketed in the A in the cross interconnected ground connection case of high voltage power cable; B; on the cross interconnected web joint of C three-phase; the output terminal of fiber-optic signal output circuit connects a single hole bolt; this single hole bolt is connected by the input end of optical fiber with the fault alarm main frame; current sample and threshold values decision circuitry inside are provided with a short-circuit current benchmark threshold values; judge by current sample whether the sample rate current value surpasses this short-circuit current benchmark threshold values; if the sample rate current value is during greater than the short-circuit current benchmark threshold values of inner setting; then think and phase fault take place and by fiber-optic signal output circuit output optical fibre signal, by Optical Fiber Transmission on the fault detect alarm host machine.
As shown in Figure 3, the fault alarm main frame comprises microprocessor, power module, fiber-optic signal receiving processing module, display module, remote communication module and reseting module.Power module is connected with other modules for each module provides power supply, and power module adopts 3V lithium battery power supply circuit and has the low-voltage warning function.Microprocessor is connected with fiber-optic signal receiving processing module, display module, remote communication module and reseting module by the I/O interface, the fiber-optic signal receiving processing module adopts the photosensitive tube device, and the photosensitive tube device can receive fiber-optic signal and be converted into digital signal and send in the microprocessor.Microprocessor shows that by the fault output that display module carries out every phase circuit this display module is the one group of pilot lamp that is provided with on the fault alarm main frame, can show the fault of institute's corresponding line by pilot lamp; The reset button that is provided with on reseting module and the fault alarm main frame is connected, and the state of all pilot lamp and output interface can be resetted by this reset button, returns to original state.Remote communication module adopts the RS485 module and is connected with the RS485 interface 5 that is provided with on the fault alarm main frame, carry out data communication by RS485 cable and remote control center, at any time the failure message of fault alarm main frame is transferred to remote control center and handles, remote control center can also be connected with reseting module by order wire and realize the remote reset function.
Principle of work of the present invention is: the fault detect terminal detects the induction current on the high voltage power cable in real time, and the dash current peak value that produces during with short circuit is as basis for estimation.When cable breaks down, the fault detect terminal is transferred to alerting signal on the fault alarm main frame with the optical fiber form, the pilot lamp that the fault alarm main frame is lighted respective lines provides the fault alarm prompting, malfunction indicator lamp can be extinguished after the time interval of setting automatically, also can pilot lamp be extinguished by the reset button on the fault alarm main frame.
It is emphasized that; embodiment of the present invention is illustrative; rather than it is determinate; therefore the present invention is not limited to the embodiment described in the embodiment; every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.
Claims (6)
1. high voltage power cable accident warning device, it is characterized in that: comprise three fault detect terminals and a fault alarm main frame, three fault detect terminals are installed in respectively on the interior cross interconnected web joint of three-phase of the cross interconnected ground connection case of high voltage power cable and are used to detect phase fault; The fault alarm main frame is installed on the high voltage power cable ground connection case panel, and three input ends of fault alarm main frame are connected with the output terminal of three fault detect terminals and are used to receive and show the fault alarm information of each fault detect terminal transmission.
2. high voltage power cable accident warning device according to claim 1; it is characterized in that: described fault detect terminal comprises induction by current coil, holding circuit, current sample and threshold values decision circuitry and the fiber-optic signal output circuit that is connected in turn; the induction by current coil securely is socketed on the cross interconnected web joint of three-phase in the cross interconnected ground connection case of high voltage power cable, and the output terminal of fiber-optic signal output circuit connects a single hole bolt and as optical fiber interface.
3. high voltage power cable accident warning device according to claim 1, it is characterized in that: described fault alarm main frame comprises microprocessor, power module, fiber-optic signal receiving processing module, display module, power module is connected with other modules for each module provides power supply, and microprocessor is connected with display module with the fiber-optic signal receiving processing module by the I/O interface.
4. high voltage power cable accident warning device according to claim 3 is characterized in that: described microprocessor also connects a reseting module, and the reset button that is provided with on this reseting module and the fault alarm main frame is connected.
5. high voltage power cable accident warning device according to claim 3 is characterized in that: described microprocessor also connects a RS485 remote communication module, and the RS485 interface that is provided with on this RS485 remote communication module and the fault alarm main frame is connected.
6. according to claim 3 or 4 or 5 described high voltage power cable accident warning devices, it is characterized in that: described fiber-optic signal receiving processing module adopts the photosensitive tube device, and described display module is the one group of pilot lamp that is provided with on the fault alarm main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101948258A CN102288861A (en) | 2011-07-13 | 2011-07-13 | High-voltage power cable fault warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101948258A CN102288861A (en) | 2011-07-13 | 2011-07-13 | High-voltage power cable fault warning device |
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| CN102288861A true CN102288861A (en) | 2011-12-21 |
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| CN2011101948258A Pending CN102288861A (en) | 2011-07-13 | 2011-07-13 | High-voltage power cable fault warning device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590581A (en) * | 2012-01-12 | 2012-07-18 | 航天科工深圳（集团）有限公司 | Device for detecting power failure |
| CN106773986A (en) * | 2016-12-30 | 2017-05-31 | 广州澳视互动传媒有限公司 | Digital Transmission case and fault diagnosis system |
| CN114460490A (en) * | 2022-01-17 | 2022-05-10 | 武汉朕泰智能科技有限公司 | Method for diagnosing ground short circuit fault inside high-voltage cable sheath grounding box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555917U (en) * | 2009-12-10 | 2010-08-18 | 桂林电子科技大学 | Power system fault indicating device |
| CN202153250U (en) * | 2011-07-13 | 2012-02-29 | 天津市电力公司 | Novel fault alarm device for high-voltage power cable |
-
2011
- 2011-07-13 CN CN2011101948258A patent/CN102288861A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201555917U (en) * | 2009-12-10 | 2010-08-18 | 桂林电子科技大学 | Power system fault indicating device |
| CN202153250U (en) * | 2011-07-13 | 2012-02-29 | 天津市电力公司 | Novel fault alarm device for high-voltage power cable |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590581A (en) * | 2012-01-12 | 2012-07-18 | 航天科工深圳（集团）有限公司 | Device for detecting power failure |
| CN106773986A (en) * | 2016-12-30 | 2017-05-31 | 广州澳视互动传媒有限公司 | Digital Transmission case and fault diagnosis system |
| CN106773986B (en) * | 2016-12-30 | 2019-03-19 | 广州傲视物联网信息技术有限公司 | Digital Transmission case and fault diagnosis system |
| CN114460490A (en) * | 2022-01-17 | 2022-05-10 | 武汉朕泰智能科技有限公司 | Method for diagnosing ground short circuit fault inside high-voltage cable sheath grounding box |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121122 |
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Effective date of registration: 20121122 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: Tianjin Electric Power Corp. Applicant after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: Tianjin Electric Power Corp. |
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Application publication date: 20111221 |