CN202153250U - Novel fault alarm device for high-voltage power cable - Google Patents
Novel fault alarm device for high-voltage power cable Download PDFInfo
- Publication number
- CN202153250U CN202153250U CN2011202452927U CN201120245292U CN202153250U CN 202153250 U CN202153250 U CN 202153250U CN 2011202452927 U CN2011202452927 U CN 2011202452927U CN 201120245292 U CN201120245292 U CN 201120245292U CN 202153250 U CN202153250 U CN 202153250U
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- power cable
- fault alarm
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- 238000004891 communication Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
Abstract
The utility model relates to a novel fault alarm device for a high-voltage power cable. The device comprises three fault detection terminals and a fault alarm host, wherein the three fault detection terminals are respectively arranged on a three-phase crossing interconnection connection board in a high-voltage power cable crossing interconnection earth box so as to detect phase short circuit faults, the fault alarm host is arranged on the panel of the high-voltage power cable earth box, and the three input ends of the fault alarm host are connected with the output ends of the three fault detection terminals so as to receive and display fault alarm information transmitted by the fault detection terminals. The device is reasonable in design, the fault detection terminals can automatically detect the phase short circuit faults of the high-voltage power cable and can realize an alarm function via the fault alarm host, and the device can be arranged in each set of crossing interconnection sections and accurately determine in which crossing interconnection section cable faults generates, thus the device can provide a reliable basis for cable fault inquiry, improves the efficiency of fault first-aid repair, greatly reduces power failure time, and has the characteristics of rapidness, accuracy, safety, convenience, and the like.
Description
Technical field
The utility model belongs to the electric power network field, especially a kind of novel high-pressure 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, and especially cross interconnected section more cable line is when breaking 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 purpose of the utility model is to overcome the deficiency of prior art, and a kind of novel high-pressure power cable accident warning device that can detect the high voltage power cable fault quickly and accurately is provided.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of novel high-pressure 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 cross interconnected web joint of three-phase in 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 at 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 through the I/O interface.
And described microprocessor also connects a reseting module, and the SR 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 a group-indicate lamp that is provided with on the fault alarm main frame.
The advantage and the good effect of the utility model are:
The utility model 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 be detected faradic variation automatically and realize warning function through the fault alarm main frame; In each organizes cross interconnected section, this device is installed and just can exactly cable fault be determined in a certain cross interconnected section, inquiry provides reliable basis for cable fault, has 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 the connection synoptic diagram of the utility model;
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 utility model embodiment is done further detailed description:
A kind of novel high-pressure 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 respectively on A in the cross interconnected ground connection case of high voltage power cable, B, the cross interconnected web joint of C three-phase and are used to monitor the phase fault between A, B, the C three-phase, and when the fault detect terminal detected phase fault, the output port through 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 through 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, and the fault detect terminal of corresponding C phase is connected with input end L3, and 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 foundation being provided during on site fault clearing.
As shown in Figure 2; The 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 interior A of the cross interconnected ground connection case of high voltage power cable, B, 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 through the input end of optical fiber with the fault alarm main frame; Current sample and a short-circuit current benchmark of threshold values decision circuitry set inside threshold values judge that through 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 through fiber-optic signal output circuit output optical fibre signal, through 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 through 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 through the fault output that display module carries out every phase circuit this display module is a group-indicate lamp that on the fault alarm main frame, is provided with, and can show the fault of institute's corresponding line through pilot lamp; The SR that is provided with on reseting module and the fault alarm main frame is connected, and can the state of all pilot lamp and output interface be resetted through this SR, returns to original state.Remote communication module adopt the RS485 module and with the fault alarm main frame on the RS485 interface 5 that is provided be connected; Carry out data communication through 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 through order wire and realize the remote reset function.
The principle of work of the utility model is: the induction current on the high voltage power cable is detected at the fault detect terminal 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 through the SR on the fault alarm main frame.
It is emphasized that; The described embodiment of the utility model is illustrative; Rather than it is determinate; Therefore the utility model is not limited to the embodiment described in the embodiment, every by those skilled in the art according to other embodiments that the technical scheme of the utility model draws, belong to the scope of the utility model protection equally.
Claims (6)
1. novel high-pressure 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 cross interconnected web joint of three-phase in 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 at three fault detect terminals and are used to receive and show the fault alarm information of each fault detect terminal transmission.
2. novel high-pressure 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. novel high-pressure 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 through the I/O interface.
4. novel high-pressure power cable accident warning device according to claim 3 is characterized in that: described microprocessor also connects a reseting module, and the SR that is provided with on this reseting module and the fault alarm main frame is connected.
5. novel high-pressure power cable accident warning device according to claim 3; It 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 novel high-pressure 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 a group-indicate lamp that is provided with on the fault alarm main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202452927U CN202153250U (en) | 2011-07-13 | 2011-07-13 | Novel fault alarm device for high-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202452927U CN202153250U (en) | 2011-07-13 | 2011-07-13 | Novel fault alarm device for high-voltage power cable |
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| Publication Number | Publication Date |
|---|---|
| CN202153250U true CN202153250U (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202452927U Expired - Lifetime CN202153250U (en) | 2011-07-13 | 2011-07-13 | Novel fault alarm device for high-voltage power cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288861A (en) * | 2011-07-13 | 2011-12-21 | 天津市电力公司 | High-voltage power cable fault warning device |
| CN115480139A (en) * | 2022-11-15 | 2022-12-16 | 国网山东省电力公司胶州市供电公司 | Transformer substation cable insulation state detection device and method |
-
2011
- 2011-07-13 CN CN2011202452927U patent/CN202153250U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288861A (en) * | 2011-07-13 | 2011-12-21 | 天津市电力公司 | High-voltage power cable fault warning device |
| CN115480139A (en) * | 2022-11-15 | 2022-12-16 | 国网山东省电力公司胶州市供电公司 | Transformer substation cable insulation state detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN ELECTRIC POWER CORP. Effective date: 20130521 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: TIANJIN ELECTRIC POWER CORP. Effective date: 20130521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300010 HEXI, TIANJIN TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130521 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Tianjin Electric Power Corp. Address before: 300010 Tianjin city Hexi District Wujing Road No. 39 Patentee before: Tianjin Electric Power Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120229 |