CN204945306U - Faults of High Voltage Electric Power Cable locating device - Google Patents
Faults of High Voltage Electric Power Cable locating device Download PDFInfo
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- CN204945306U CN204945306U CN201520683052.3U CN201520683052U CN204945306U CN 204945306 U CN204945306 U CN 204945306U CN 201520683052 U CN201520683052 U CN 201520683052U CN 204945306 U CN204945306 U CN 204945306U
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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 utility model provides a kind of Faults of High Voltage Electric Power Cable locating device, comprise interconnective first terminal and the second terminal, first terminal comprises first processor, first integrated circuit and the first signal coupling circuit, second terminal comprises the second processor, second integrated circuit and secondary signal are all and circuit, first integrated circuit record first signal coupling circuit senses the time of high voltage power cable fault traveling wave, its inner time synchronizing signal produced carries out time complexity curve, generate and send the very first time to first processor, second integrated circuit record secondary signal coupled circuit senses the high voltage power cable fault traveling wave time, its inner time synchronizing signal produced carries out time complexity curve, generate and send the second time to the second processor, first processor or the second processor are according to the very first time, second time and high voltage power cable length, calculate the position of failure point of high voltage power cable.
Description
Technical field
The utility model relates to technical field of power systems, particularly relates to Faults of High Voltage Electric Power Cable locating device.
Background technology
In recent years, China's power grid construction sustained and rapid development, it is that neatly lucid and lively city look and feel provide condition precedent that underground power cable electric line progressively replaces overhead transmission line, and Urban Electric Network Cabling degree will be the important symbol weighing urban distribution network Technical and economical level.
But because power cable is in manufacture, cable laying operation, operation maintenance process, the inevitably problem such as product quality, running overload and outside destroy, they are the immediate causes causing cable body generation operation troubles in cable line.
High voltage power cable complex manufacturing technology, laying-out distance, mainly bears critical circuits power supply and distribution of electric power, and intelligent grid has higher requirement for the reliability of high voltage power cable.In electric system, when high voltage power cable breaks down, if can fast and accurately locate its trouble spot, effectively can shorten power cable repair time, improve high voltage power cable safe reliability.
Utility model content
Based on this, be necessary the problem for there is no a kind of Faults of High Voltage Electric Power Cable locating device at present and realizing fast and accurately locating trouble spot in high voltage power cable, a kind of Faults of High Voltage Electric Power Cable locating device is provided, realizes fast and accurately locating trouble spot in high voltage power cable.
A kind of Faults of High Voltage Electric Power Cable locating device, comprises interconnective first terminal and the second terminal;
Described first terminal comprises the first processor connected successively, first integrated circuit and the first signal coupling circuit, described second terminal comprises the second processor connected successively, second integrated circuit and secondary signal coupled circuit, described first signal coupling circuit is connected with one end of high voltage power cable, described secondary signal coupled circuit is connected with the other end of described high voltage power cable, wherein, described first integrated circuit is built-in with very first time synchronizing circuit, described second integrated circuit is built-in with the second time synchronized circuit, described high voltage power cable length is known,
Described in described first integrated circuit record, the first signal coupling circuit senses the time of described high voltage power cable fault traveling wave, the very first time synchronizing circuit of described first integrated circuit produces internal time synchronizing signal and carries out time complexity curve, generate and send the very first time to described first processor, described in described second integrated circuit record, secondary signal coupled circuit senses the described high voltage power cable fault traveling wave time, second time synchronized circuitry produces internal time synchronizing signal of described second integrated circuit carries out time complexity curve, second time that generated and sent is to described second processor, described first processor or described second processor are according to the described very first time, described second time and described high voltage power cable length, calculate the position of failure point of described high voltage power cable.
The utility model Faults of High Voltage Electric Power Cable locating device, comprise interconnective first terminal and the second terminal, first terminal comprises first processor, first integrated circuit and the first signal coupling circuit, second terminal comprises the second processor, second integrated circuit and secondary signal are all and circuit, first integrated circuit record first signal coupling circuit senses the time of high voltage power cable fault traveling wave, its inner time synchronizing signal produced carries out time complexity curve, generate and send the very first time to first processor, second integrated circuit record secondary signal coupled circuit senses the high voltage power cable fault traveling wave time, its inner time synchronizing signal produced carries out time complexity curve, generate and send the second time to the second processor, first processor or the second processor are according to the very first time, second time and high voltage power cable length, calculate the position of failure point of high voltage power cable.In whole device, the first integrated circuit and the second integrated circuit carry out time complexity curve according to its temporal synchronizing signal respectively, reduce the error of writing time, can realize fast and accurately locating trouble spot in high voltage power cable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Faults of High Voltage Electric Power Cable locating device first embodiment;
Fig. 2 is the structural representation of the utility model Faults of High Voltage Electric Power Cable locating device second embodiment;
Fig. 3 is the structural representation of the utility model Faults of High Voltage Electric Power Cable locating device the 3rd embodiment.
Embodiment
As shown in Figure 1, a kind of Faults of High Voltage Electric Power Cable locating device, comprises interconnective first terminal 100 and the second terminal 200;
First terminal 100 comprises the first processor 120 connected successively, first integrated circuit 140 and the first signal coupling circuit 160, second terminal 200 comprises the second processor 220 connected successively, second integrated circuit 240 and secondary signal coupled circuit 260, first signal coupling circuit 160 is connected with one end of high voltage power cable A, secondary signal coupled circuit 260 is connected with the other end of high voltage power cable A, wherein, first integrated circuit 140 is built-in with very first time synchronizing circuit, it is known that second integrated circuit 240 is built-in with the second time synchronized circuit high voltage power cable A length,
First integrated circuit 140 records the time that the first signal coupling circuit 160 senses high voltage power cable A fault traveling wave, the very first time synchronizing circuit of the first integrated circuit 140 produces internal time synchronizing signal and carries out time complexity curve, generate and send the very first time to first processor 120, second integrated circuit 240 records secondary signal coupled circuit 260 and senses the high voltage power cable A fault traveling wave time, second time synchronized circuitry produces internal time synchronizing signal of the second integrated circuit 240 carries out time complexity curve, generate and send the second time to the second processor 220, first processor 120 or the second processor 220 are according to the very first time, second time and high voltage power cable A length, calculate the position of failure point of high voltage power cable A.
The length of high voltage power cable A can be measured before carrying out Faults of High Voltage Electric Power Cable location.When carrying out localization of fault, high-voltage pulse is applied to high voltage power cable A, high voltage power cable A can generate fault traveling wave at position of failure point, fault traveling wave is propagated respectively to cable two ends, the coupled circuit being arranged at cable two ends can be timely, accurately sense fault traveling wave, now the first integrated circuit 140 and the second integrated circuit 240 records the first coupled circuit respectively and the second coupled circuit senses the fault traveling wave time, and carry out time complexity curve based on the time synchronizing signal of inner generation separately respectively, is sent to first processor 120 and the second processor 220 the revised time respectively again, first processor 120 or the second processor 220 accurately calculate position of failure point according to these times and high voltage power cable A length.First integrated circuit 140 and the second integrated circuit 240 can select EPLD integrated circuit.
First terminal 100 is connected with the second terminal 200, data interaction can be realized between first processor 120 and the second processor 220, the very first time, the second processor 220 is being obtained after acquisition second time at first processor 120, first processor 120 can transmitting time query statement to the second processor 220, second processor 220 responds the time inquiring instruction of first processor 120, second time that sent, first processor 120 was according to the very first time, the second time and high voltage power cable A length computation position of failure point to first processor 120.; Or, the very first time, the second processor 220 is being obtained after acquisition second time at first processor 120, second processor 220 transmitting time query statement is to first processor 120, first reason device responds the time inquiring instruction of the second processor 220, send the very first time to the second processor 220, second processor 220 according to the very first time, the second time and high voltage power cable A length computation position of failure point.
Its computing formula is as follows:
X+Y＝L
|X-Y|＝(t
1-t
2)*v
In formula, t
1for the very first time, t
2be the second time, L is high voltage power cable A length, and v is fault traveling wave velocity of propagation in high voltage power cable, and X is the distance of trouble spot and first terminal 100, and Y is the distance of trouble spot and the second terminal 200.
The utility model Faults of High Voltage Electric Power Cable locating device, comprise interconnective first terminal 100 and the second terminal 200, first terminal 100 comprises first processor 120, first integrated circuit 140 and the first signal coupling circuit 160, second terminal 200 comprises the second processor 220, second integrated circuit 240 and secondary signal are all and circuit, first integrated circuit 140 records the time that the first signal coupling circuit 160 senses high voltage power cable A fault traveling wave, its inner time synchronizing signal produced carries out time complexity curve, generate and send the very first time to first processor 120, second integrated circuit 240 records secondary signal coupled circuit 260 and senses the high voltage power cable A fault traveling wave time, its inner time synchronizing signal produced carries out time complexity curve, generate and send the second time to the second processor 220, first processor 120 or the second processor 220 are according to the very first time, second time and high voltage power cable A length, calculate the position of failure point of high voltage power cable A.In whole device, the first integrated circuit 140 and the second integrated circuit 240 carry out time complexity curve according to its temporal synchronizing signal respectively, reduce the error of writing time, can realize fast and accurately locating trouble spot in high voltage power cable.
Wherein in an embodiment, first processor 120 and the second processor 220 are the single-chip microcomputer of same model.
Wherein in an embodiment, single-chip microcomputer model is Atmega64L.
Atmega64 is low-power consumption 8 CMOS (ComplementaryMetalOxideSemiconductor, the complementary metal oxide semiconductor (CMOS)) microcontroller based on the AVRRISC structure strengthened.Due to instruction set and single clock cycle instruction time of its advanced person, the data throughput of Atmega64, thus can the contradiction of relieving system between power consumption and processing speed up to 1MIPS/MHz.Single-chip microcomputer internal program comprises five part: config jointly: initialization single-chip microcomputer, comprises a part of interrupting receive program; Eeprom: store and load every counter delay function in single-chip microcomputer; Uart0 program: the data input and data output comprising RS-232 communication module; Uart1 program: the data input and data output comprising RS-485 communication module; Main program: load above 4 parts, and the read-write arranged integrated circuit and scanning.
As shown in Figure 2, wherein in an embodiment, the first integrated circuit 140 is built-in with first communication device 142, and first communication device 142 is connected with first processor 120, second integrated circuit 240 is built-in with secondary communication device 242, and secondary communication device 242 is connected with the second processor 220.
Wherein in an embodiment, first communication device 142 comprises a RS232 communicating circuit and a RS485 communicating circuit, one RS232 communicating circuit is connected with first processor 120 respectively with a RS485 communicating circuit, secondary communication device 242 comprises the 2nd RS232 communicating circuit and the 2nd RS485 communicating circuit, and the 2nd RS232 communicating circuit is connected with the second processor 220 respectively with the 2nd RS485 communicating circuit.
RS2323 line Tx, Rx, Gnd, point-to-point full-duplex communication, within communication distance 25 meters, RS4852 line A, B, point-to-points half-duplex operation, communication distance can reach 1200 meters.In the present embodiment, first communication device 142 and secondary communication device 242 include RS232 communicating circuit and RS485 communicating circuit, and two kinds of different communicating circuits meet the requirement of different communication distance, guarantee data security, high efficiency of transmission.
Wherein in an embodiment, first terminal 100 and the second terminal 200 pass through Fiber connection.
First terminal 100 and the second terminal 200, by Fiber connection, guarantee the efficient, stable of data transmission between the two, reduce error and the time delay of data transmission.
As shown in Figure 2, wherein in an embodiment, first integrated circuit 140 is built-in with the first photoelectric switching circuit 144, first photoelectric switching circuit 144 is connected with one end of first processor 120 and optical fiber respectively, first integrated circuit 140 is built-in with the second photoelectric switching circuit 244, second photoelectric switching circuit 244 and is connected with the other end of the second processor 220 and optical fiber respectively.
First photoelectric switching circuit 144 and the second photoelectric switching circuit 244, all for realizing the conversion between light signal and electric signal, adopting light signal to eliminate the defect of electric signal interference resistance difference, can ensure the accuracy that data are transmitted.
As shown in Figure 2, wherein in an embodiment, Faults of High Voltage Electric Power Cable locating device also comprises the first insulating power supply circuit 180 and the second insulating power supply circuit 280, first signal coupling circuit 160 is connected with one end of high voltage power cable A by the first insulating power supply circuit 180, and secondary signal coupled circuit 260 is connected with the other end of high voltage power cable A by the second insulating power supply circuit 280.
First insulating power supply circuit 180 and the second insulating power supply circuit 280 are all for realizing voltage isolation, and protection Faults of High Voltage Electric Power Cable locating device, avoids it to be subject to the impact of voltage in high voltage power cable, extend its serviceable life.
As shown in Figure 3, wherein in an embodiment, Faults of High Voltage Electric Power Cable locating device also comprises external high pressure power supply 300, and external high pressure power supply 300 is connected with high voltage power cable A.
External high pressure power supply 300, for applying high-voltage pulse to high voltage power cable A, produces fault traveling wave to make it.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. a Faults of High Voltage Electric Power Cable locating device, is characterized in that, comprises interconnective first terminal and the second terminal;
Described first terminal comprises the first processor connected successively, first integrated circuit and the first signal coupling circuit, described second terminal comprises the second processor connected successively, second integrated circuit and secondary signal coupled circuit, described first signal coupling circuit is connected with one end of high voltage power cable, described secondary signal coupled circuit is connected with the other end of described high voltage power cable, wherein, described first integrated circuit is built-in with very first time synchronizing circuit, described second integrated circuit is built-in with the second time synchronized circuit, described high voltage power cable length is known,
Described in described first integrated circuit record, the first signal coupling circuit senses the time of described high voltage power cable fault traveling wave, the very first time synchronizing circuit of described first integrated circuit produces internal time synchronizing signal and carries out time complexity curve, generate and send the very first time to described first processor, described in described second integrated circuit record, secondary signal coupled circuit senses the described high voltage power cable fault traveling wave time, second time synchronized circuitry produces internal time synchronizing signal of described second integrated circuit carries out time complexity curve, second time that generated and sent is to described second processor, described first processor or described second processor are according to the described very first time, described second time and described high voltage power cable length, calculate the position of failure point of described high voltage power cable.
2. Faults of High Voltage Electric Power Cable locating device according to claim 1, is characterized in that, described first processor and described second processor are the single-chip microcomputer of same model.
3. Faults of High Voltage Electric Power Cable locating device according to claim 2, is characterized in that, described single-chip microcomputer model is Atmega64L.
4. the Faults of High Voltage Electric Power Cable locating device according to claim 1 or 2 or 3, it is characterized in that, described first integrated circuit is built-in with first communication device, described first communication device is connected with described first processor, described second integrated circuit is built-in with secondary communication device, and described secondary communication device is connected with described second processor.
5. Faults of High Voltage Electric Power Cable locating device according to claim 4, it is characterized in that, described first communication device comprises a RS232 communicating circuit and a RS485 communicating circuit, a described RS232 communicating circuit is connected with described first processor respectively with a described RS485 communicating circuit, described secondary communication device comprises the 2nd RS232 communicating circuit and the 2nd RS485 communicating circuit, and described 2nd RS232 communicating circuit is connected with described second processor respectively with described 2nd RS485 communicating circuit.
6. the Faults of High Voltage Electric Power Cable locating device according to claim 1 or 2 or 3, is characterized in that, described first terminal and described second terminal pass through Fiber connection.
7. Faults of High Voltage Electric Power Cable locating device according to claim 6, it is characterized in that, described first integrated circuit is built-in with the first photoelectric switching circuit, described first photoelectric switching circuit is connected with one end of described first processor and described optical fiber respectively, described first integrated circuit is built-in with the second photoelectric switching circuit, and described second photoelectric switching circuit is connected with the other end of described second processor and described optical fiber respectively.
8. the Faults of High Voltage Electric Power Cable locating device according to claim 1 or 2 or 3, it is characterized in that, also comprise the first insulating power supply circuit and the second insulating power supply circuit, described first signal coupling circuit is connected with one end of described high voltage power cable by described first insulating power supply circuit, and described secondary signal coupled circuit is connected with the other end of described high voltage power cable by described second insulating power supply circuit.
9. the Faults of High Voltage Electric Power Cable locating device according to claim 1 or 2 or 3, is characterized in that, also comprise external high pressure power supply, described external high pressure power supply is connected with described high voltage power cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683052.3U CN204945306U (en) | 2015-09-02 | 2015-09-02 | Faults of High Voltage Electric Power Cable locating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683052.3U CN204945306U (en) | 2015-09-02 | 2015-09-02 | Faults of High Voltage Electric Power Cable locating device |
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| CN204945306U true CN204945306U (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221174A (en) * | 2019-06-21 | 2019-09-10 | 广东电网有限责任公司 | A kind of tuning on-line device and method of transmission line malfunction |
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2015
- 2015-09-02 CN CN201520683052.3U patent/CN204945306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221174A (en) * | 2019-06-21 | 2019-09-10 | 广东电网有限责任公司 | A kind of tuning on-line device and method of transmission line malfunction |
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