CN201780354U - Evaluating instrument for monitoring on-line state of electrical cable by utilizing ultraviolet method - Google Patents
Evaluating instrument for monitoring on-line state of electrical cable by utilizing ultraviolet method Download PDFInfo
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- CN201780354U CN201780354U CN201020280785XU CN201020280785U CN201780354U CN 201780354 U CN201780354 U CN 201780354U CN 201020280785X U CN201020280785X U CN 201020280785XU CN 201020280785 U CN201020280785 U CN 201020280785U CN 201780354 U CN201780354 U CN 201780354U
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- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 19
- 230000005684 electric field Effects 0.000 claims description 16
- 238000000825 ultraviolet detection Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 11
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- 238000010295 mobile communication Methods 0.000 abstract 1
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Abstract
The utility model relates to an evaluating instrument for monitoring an on-line state of an electrical cable by utilizing an ultraviolet method. The evaluating instrument comprises a partial discharging ultraviolet detecting unit, an insulating medium parameter measuring unit, a temperature detecting unit, a central control processing unit, a GSM (global system for mobile communication) data communication unit and a power management circuit, wherein the output end of the partial discharging ultraviolet detecting unit, the output end of the insulating medium parameter measuring unit and the output end of the temperature detecting unit are respectively connected with the input end of the central control processing unit; the output end of the central control processing unit is connected with the input end of the GSM data communication unit through a CAN (controller area network) bus; and the output end of the power management circuit is respectively connected with the power supply ends of the partial discharging ultraviolet detecting unit, the insulating medium parameter measuring unit, the temperature detecting unit, the central control processing unit and the GSM data communication unit. The evaluating instrument detects the parameters of the temperature, partial discharge, dielectric property change, environmental conditions and the like of an underground cable on line, and has the advantages of reliable and sensitive detection effect and lower detection cost.
Description
Technical field
The utility model relates to power cable on-line condition monitoring device, particularly a kind of ultraviolet method power cable on-line condition monitoring assessment instrument.
Background technology
The status monitoring of power cable is related to the security of operation of electric system.Compare with overhead transmission line, underground power cable has incomparable superiority, but the prominent question of inconvenient maintenance is also arranged.Therefore, the fault detect for underground power cable has become domestic and international expert, the scholar pays close attention to and the emphasis problem of research.Products such as at present existing underground cable fault locating instrument, reflectoscope, measure buried cable the trend and the degree of depth, open circuit, the position of short circuit, trouble spot.But these methods are single, can not the comprehensive detection cable temperature, current-carrying capacity of cable, shelf depreciation, medium is aging and cable operational factor such as surrounding enviroment, can not carry out the assessment of power cable on-line condition monitoring, can't adapt to the needs of the preventive management of modern power network development and science, can't satisfy the requirement of setting up underground power cable safe early warning infosystem.Therefore, the device of studying a kind of desirable on-line monitoring power cable state just seems particularly important.
The utility model content
The purpose of this utility model provides a kind of ultraviolet method power cable on-line condition monitoring assessment instrument, this device is suitable for underground power cable is carried out online quantitative status monitoring, to obtain operational factors such as temperature, current-carrying capacity of cable, shelf depreciation, medium in the underground power cable work is aging, carry out analytical calculation by power cable running status evaluating system again, in time pinpoint the problems, improve the security of operation of power circuit.
For achieving the above object, the following technical scheme of this novel employing: a kind of ultraviolet method power cable on-line condition monitoring assessment instrument is made of shelf depreciation ultraviolet detection unit, insulating medium parameter measurement unit, temperature detecting unit, central controlled processing unit, GSM data communication units and electric power management circuit;
A), shelf depreciation ultraviolet detection unit: the UV radiation signal that produces when being used for collection in worksite cable generation shelf depreciation, forming circuit by ultraviolet spheric probe and ultraviolet pulse thereof forms, the ultraviolet spheric probe is arranged on the power cable, and its output terminal is connected with the MCU1 input end of central controlled processing unit;
B), insulating medium parameter measurement unit: be used for the parameter of power cable insulation medium is gathered, constitute by electrode and electric-field sensor chip, the electric-field sensor chip adopts the electric field image device MC33794 of Freescale company, support 9 electric-field sensor electrodes, the output terminal of MC33794 is connected with the MCU2 input end of central controlled processing unit;
C), temperature detecting unit: be used for System for Surface Temperatures of Power Cables and environment temperature are carried out the multiple spot collection, adopt the high-precision digital temperature sensor AD1820 and the relevant auxiliary circuit of AD company to realize that its output terminal is connected with the MCU3 input end of central controlled processing unit;
D), central controlled processing unit: be used for data pre-service, data transmission, realize overall control, make each unit co-ordination, independently MCU and relevant auxiliary circuit constitute by three, the TMS320LF2407 that MCU adopts TI company to produce, its output terminal is connected with the input end of GSM data communication units;
E), GSM data communication units: upload the data to the GPRS communication network, and receive the information that data processing centre (DPC) sends, the TC35i that adopts Siemens Company to produce;
F), electric power management circuit: the supply voltage that supply voltage is converted to 3.3V, adopt power conversion chip LT1764A-3.3V, its output terminal is connected with shelf depreciation ultraviolet detection unit, insulating medium parameter measurement unit, temperature detecting unit, central controlled processing unit and the power end of GSM data communication units respectively.
Compared with prior art, this novel beneficial effect is:
This novel ultraviolet method power cable on-line condition monitoring assessment instrument that provides may be used in the state-detection of underground power cable, has realized real-time online, comprehensive multi-parameter monitoring.This device collection temperature detection, shelf depreciation ultraviolet detection and insulating medium are detected on one, the online pipe of patrolling and examining buries parameters such as underground cable temperature, shelf depreciation, dielectric property variation and environmental aspect, and reaches the background data base server by reliable transmission channel.And by exploitation power cable running state parameter integrated estimation system, continuous operational factor to power cable is analyzed and is assessed, and can control the running status of power cable, the early detection latent fault comprehensively, the sub-health state of diagnosis cable is really realized repair based on condition of component.Introduced to innovation simultaneously and utilized ultraviolet to carry out the Partial Discharge Detection of power cable, more directly perceived and sensitive on detecting than traditionally pulse current method and electromagnetic field method, almost do not disturb, have remarkable advantages.This detection method cost is lower, detects the effect sensitivity.
Description of drawings
Fig. 1 is this novel hardware block diagram;
Fig. 2 is this novel operational flowchart;
Embodiment
Below in conjunction with accompanying drawing invention is described further:
Referring to Fig. 1 (each module among Fig. 1 is corresponding unit), basis is novel to be made of shelf depreciation ultraviolet detection unit 1, insulating medium parameter measurement unit 2, temperature detecting unit 3, central controlled processing unit 4, GSM data communication units 5 and electric power management circuit 6;
A), shelf depreciation ultraviolet detection unit 1: the UV radiation signal that produces when being used for collection in worksite cable generation shelf depreciation, forming circuit by ultraviolet spheric probe and ultraviolet pulse thereof forms, the ultraviolet spheric probe is arranged on the power cable, and its output terminal is connected with the MCU1 input end of central controlled processing unit 4;
B), the insulating medium parameter measurement unit 2: be used for the parameter of power cable insulation medium is gathered, constitute by electrode and electric-field sensor chip, the electric-field sensor chip adopts the electric field image device MC33794 of Freescale company, support 9 electric-field sensor electrodes, the output terminal of MC33794 is connected with the MCU2 input end of central controlled processing unit 4;
C), temperature detecting unit 3: be used for System for Surface Temperatures of Power Cables and environment temperature are carried out the multiple spot collection, adopt the high-precision digital temperature sensor AD1820 and the relevant auxiliary circuit of A D company to realize that its output terminal is connected with the MCU3 input end of central controlled processing unit 4;
D), central controlled processing unit 4: be used for data pre-service, data transmission, realize overall control, make each unit co-ordination, independently MCU and relevant auxiliary circuit constitute by three, the TMS320LF2407 that MCU adopts TI company to produce, its output terminal is connected with the input end of GSM data communication units 5;
E), GSM data communication units 5: upload the data to the GPRS communication network, and receive the information that data processing centre (DPC) sends, the TC35i that adopts Siemens Company to produce;
F), electric power management circuit 6: the supply voltage that supply voltage is converted to 3.3V, adopt power conversion chip LT1764A-3.3V, its output terminal is connected with shelf depreciation ultraviolet detection unit 1, insulating medium parameter measurement unit 2, temperature detecting unit 3, central controlled processing unit 4 and the power end of GSM data communication units 5 respectively.
Wherein, shelf depreciation ultraviolet detection unit 1 forms circuit by ultraviolet spheric probe and incorporate ultraviolet pulse thereof and forms that (model FU1035-Φ 5, Beijing generation gift Science and Technology Ltd. produces.The ultraviolet spheric probe can be according to field condition, as, be easy to settings such as leakage point or customer requirements).Insulating medium parameter measurement unit 2 is made of electrode and electric-field sensor chip (containing microprocessor), the electric-field sensor chip adopts MC33794, it supports 9 electric-field sensor electrodes, by the ultrasound wave of emission 120kHz, measure the subtle change that is arranged in the space distribution electric capacity on object 9 electrodes on every side and obtain cable electric field information on every side; Temperature detecting unit 3 is mainly realized with relevant auxiliary circuit by high-precision digital temperature sensor AD1820; Central authorities' controlled processing unit 4 is made up of three MCU that connect shelf depreciation ultraviolet detection unit 1, insulating medium parameter measurement unit 2 and temperature detecting unit 3 respectively, the TMS320LF2407 that adopts TI company to produce; The TC35i that GSM data communication units 5 adopts Siemens Company to produce; Electric power management circuit 6 adopts power conversion chip LT1764A-3.3V.
Claims (1)
1. a ultraviolet method power cable on-line condition monitoring assessment instrument is characterized in that: be made of shelf depreciation ultraviolet detection unit (1), insulating medium parameter measurement unit (2), temperature detecting unit (3), central controlled processing unit (4), GSM data communication units (5) and electric power management circuit (6);
A, shelf depreciation ultraviolet detection unit (1): the UV radiation signal that produces when being used for collection in worksite cable generation shelf depreciation, forming circuit by ultraviolet spheric probe and ultraviolet pulse forms, the ultraviolet spheric probe is arranged on the power cable, and its output terminal is connected with the MCU1 input end of central controlled processing unit (4);
B, insulating medium parameter measurement unit (2): be used for the parameter of power cable insulation medium is gathered, constitute by electrode and electric-field sensor chip, the electric-field sensor chip adopts the electric field image device MC33794 of Freescale company, support 9 electric-field sensor electrodes, the output terminal of MC33794 is connected with the MCU2 input end of central controlled processing unit (4);
C, temperature detecting unit (3): be used for System for Surface Temperatures of Power Cables and environment temperature are carried out the multiple spot collection, adopt the high-precision digital temperature sensor AD1820 and the relevant auxiliary circuit of A D company to realize that its output terminal is connected with the MCU3 input end of central controlled processing unit (4);
D, central controlled processing unit (4): be used for data pre-service, data transmission, realize overall control, make each unit co-ordination, independently MCU and relevant auxiliary circuit constitute by three, the TMS320LF2407 that MCU adopts TI company to produce, its output terminal is connected with the input end of GSM data communication units (5);
E, GSM data communication units (5): upload the data to the GPRS communication network, and receive the information that data processing centre (DPC) sends, the TC35i that adopts Siemens Company to produce;
F, electric power management circuit (6): the supply voltage that supply voltage is converted to 3.3V, adopt power conversion chip LT1764A-3.3V, its output terminal is connected with shelf depreciation ultraviolet detection unit (1), insulating medium parameter measurement unit (2), temperature detecting unit (3), central controlled processing unit (4) and the power end of GSM data communication units (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020280785XU CN201780354U (en) | 2010-08-04 | 2010-08-04 | Evaluating instrument for monitoring on-line state of electrical cable by utilizing ultraviolet method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020280785XU CN201780354U (en) | 2010-08-04 | 2010-08-04 | Evaluating instrument for monitoring on-line state of electrical cable by utilizing ultraviolet method |
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| CN201780354U true CN201780354U (en) | 2011-03-30 |
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| CN201020280785XU Expired - Lifetime CN201780354U (en) | 2010-08-04 | 2010-08-04 | Evaluating instrument for monitoring on-line state of electrical cable by utilizing ultraviolet method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331540A (en) * | 2011-05-26 | 2012-01-25 | 江苏科技大学 | On-line monitoring device and method for corona discharge of ultra-high voltage power transmission line |
-
2010
- 2010-08-04 CN CN201020280785XU patent/CN201780354U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331540A (en) * | 2011-05-26 | 2012-01-25 | 江苏科技大学 | On-line monitoring device and method for corona discharge of ultra-high voltage power transmission line |
| CN102331540B (en) * | 2011-05-26 | 2014-06-04 | 江苏科技大学 | On-line monitoring device and method for corona discharge of ultra-high voltage power transmission line |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20140103 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140103 Address after: 643000 Zigong city of Sichuan Province, Ziliujing District tanmulin Street No. 115 Patentee after: Zigong Electric Power Bureau Patentee after: State Grid Corporation of China Address before: Zigong City, Sichuan province 643000 tanmulin Street No. 115 Patentee before: Zigong Electric Power Bureau |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |