CN203376439U - High voltage cable local discharge on-line monitoring device - Google Patents
High voltage cable local discharge on-line monitoring device Download PDFInfo
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- CN203376439U CN203376439U CN201320371944.0U CN201320371944U CN203376439U CN 203376439 U CN203376439 U CN 203376439U CN 201320371944 U CN201320371944 U CN 201320371944U CN 203376439 U CN203376439 U CN 203376439U
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- tension cable
- local discharge
- monitoring device
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Abstract
The utility model provides a high voltage cable local discharge on-line monitoring device. The device comprises a sensor which is sleeved on a cable grounding wire or a cross connection wire of a high voltage cable and is used for acquiring discharge signals of the high voltage cable, a monitoring terminal which is connected with the sensor, a network switch which is connected with the monitoring terminal and a discharge monitoring concentrator which is connected with the network switch. The sensor and the monitoring terminal are connected through a coaxial cable. The monitoring terminal, the network switch and the discharge monitoring concentrator are connected through optical fibers. According to the high voltage cable local discharge on-line monitoring device, the sensor is used to carry out on-line detection on the local discharge signals of the high voltage cable, and the detected local discharge signals are transmitted to the monitoring terminal; the monitoring terminal preprocesses the local discharge signals transmitted from the sensor; the discharge monitoring concentrator analyzes and processes the local discharge signals collected by the network switch to acquire the local discharge information of the high voltage cable; and real-time on-line monitoring is carried out on the local discharge of the high voltage cable.
Description
Technical field
The utility model relates to a kind of high-tension cable pick-up unit, particularly relates to a kind of high-tension cable local discharge on-line monitoring device.
Background technology
Along with the development of electrical network and the needs of urban network reconstruction, the use amount of China's power cable line rises just year by year.Wherein to have manufacturing process simple for cross-inked polyethylene power cable, electric property and heat resistance are all fine, transmission capacity is larger, structure is light, is easy to bending, and attachment tab is simple, mounting and installation is convenient, be not subject to the restriction of height fall, there is no leakage of oil and cause the advantages such as danger of fire, so cross-inked polyethylene power cable is subject to the user and extensively welcomes.In China's urban distribution network of each big city as Beijing, Shanghai, Tianjin, Guangzhou and other places, HV XLPE Power Cable has obtained a wide range of applications, and the amount of laying cumulative year after year.Practical experience shows, cable line fault is to cause power grid accident, causes the major reason of heavy economic losses.Therefore, grasp accurately, in time the running status of cable line, to reasonable handling failure hidden danger, ensure that power grid operation has great importance.
To the high-tension cable device and method detected that breaks down, be at present mainly to carry out partial discharge monitoring for the cable in HV cable accessories and peripheral limited range thereof, can't accomplish the whole piece cable is monitored.
Some online testing product needs the relevant speciality personnel by means of outside detecting instrument, such as equipment such as oscillograph, spectrum analyzers, carry out at the scene observation analysis, maybe the data retrieval laboratory gathered is done further to analyze, just can draw the relevant details of Partial Discharge Detection, the long-term on-line real time monitoring of so inconvenient high-tension cable.
The utility model content
Based on this, be necessary to provide a kind of high-tension cable local discharge on-line monitoring device, the shelf depreciation situation of the on-line monitoring high-tension cable that it can be real-time.
A kind of high-tension cable local discharge on-line monitoring device, the sensor that comprises on the cable grounding line that is socketed in high-tension cable or cross interconnected line the discharge signal for gathering high-tension cable, the signal that is connected with sensor and sensor is detected carries out pretreated monitoring terminal, the signal that the network switch that the data that monitoring terminal is transmitted of being connected with monitoring terminal are forwarded and being connected with the network switch transmits the network switch carries out the electric discharge monitoring concentrator of analyzing and processing, between described sensor and monitoring terminal, by concentric cable, be connected, described monitoring terminal, between the network switch and electric discharge monitoring concentrator, by optical fiber, be connected.
Therein in embodiment, described high-tension cable local discharge on-line monitoring device comprises a plurality of monitoring terminals that mutually are cascaded, each monitoring terminal is connected with the described network switch with the corresponding connection of at least one sensor, one of them monitoring terminal in a plurality of monitoring terminals that mutually are cascaded.
In embodiment, described monitoring terminal comprises a plurality of network communication interfaces therein, and a plurality of monitoring terminals are cascaded by described network communication interface.
In embodiment, the data that described electric discharge monitoring concentrator transmits any two adjacent monitoring terminals are unified to process after processing as one group of data analysis more therein.
Therein in embodiment, each monitoring terminal and one group of corresponding connection of sensor, each group sensor comprises three sensors, described three sensors are the phase high-tension cable in the three-phase high-voltage cable of same position on Monitoring High Voltage Cable respectively.
In embodiment, the sensor of respectively organizing of described high-tension cable local discharge on-line monitoring device is equidistant arrangement on Voltage Cable Lines Construction therein.
In embodiment, described sensor is electromagnetic sensor therein.
In embodiment, described sensor is the Split type current transformer therein.
Therein in embodiment, described electric discharge monitoring concentrator comprises memory module that processing module that data analysis that the network switch is transmitted processes, the data that the network switch is transmitted are stored and the display module that the analysis processing result of processing module is shown.
In embodiment, described display module is liquid crystal display therein.
Above-mentioned high-tension cable local discharge on-line monitoring device detects online the local discharge signal of high-tension cable and the local discharge signal detected is delivered to monitoring terminal by sensor, the local discharge signal that monitoring terminal transmits sensor carries out pre-service, thereby the local discharge signal that electric discharge monitoring concentrator collects the network switch carries out analyzing and processing and obtains the information whether high-tension cable shelf depreciation occurs, thereby realizes the real time on-line monitoring to the high-tension cable shelf depreciation.
The accompanying drawing explanation
The high-tension cable local discharge on-line monitoring device schematic diagram that Fig. 1 is an embodiment;
Fig. 2 is the schematic diagram of the high-tension cable local discharge on-line monitoring device shown in Fig. 1 while being applied to three-phase electricity.
Embodiment
Please refer to Fig. 1, an embodiment provides a kind of high-tension cable local discharge on-line monitoring device.In figure, the corresponding sensor 110 of following two monitoring terminals 120 and high-tension cable 200 do not draw.This high-tension cable local discharge on-line monitoring device comprises on the cable grounding line that is socketed in high-tension cable 200 or cross interconnected line the sensor 110 of the discharge signal for gathering high-tension cable 200, the signal that is connected with sensor 110 and sensor 110 is detected carries out pretreated monitoring terminal 120, the signal that the network switch 140 that the data that monitoring terminal 120 is transmitted of being connected with monitoring terminal 120 are forwarded and being connected with the network switch 140 transmits the network switch 140 carries out the electric discharge monitoring concentrator 150 of analyzing and processing.Be connected by concentric cable between sensor 110 and monitoring terminal 120, be connected by optical fiber 130 between monitoring terminal 120, the network switch 140 and electric discharge monitoring concentrator 150.
Wherein, only drawn the very short part of high-tension cable 200 in Fig. 1, sensor 110 has also only drawn two.High-tension cable 200 can be cross-inked polyethylene power cable.The quantity of sensor 110 herein needs institute to determine according to length and the actual use of high-tension cable 200.Sensor 110 is mainly the discharge scenario that detects online high-tension cable 200.These sensors are equidistant arrangement on the circuit of high-tension cable 200.Sensor 110 herein is electromagnetic sensor, is the Split type current transformer more specifically.Because sensor 110 is electromagnetic sensor, so the operation of 110 pairs of high-tension cables of sensor exerts an influence hardly, can realize online detection.
The monitoring terminal 120 of this high-tension cable local discharge on-line monitoring device comprises the analog filtering amplifying circuit, based on FPGA(Field-Programmable Gate Array, i.e. field programmable gate array) high-capacity and high-speed data acquisition circuit, high speed processor and network communication interface.The major function of the filter amplification circuit of monitoring terminal 120, the high-capacity and high-speed data acquisition circuit based on FPGA and high speed processor has been the pre-service such as the simulation amplification, filtering noise reduction, high-speed data sampling, Partial discharge signal reconstruct of local discharge signal.In addition, monitoring terminal 120 can also carry out the data in certain time limit to the Partial Discharge Data after collection analysis and preserve, and can carry out communication with electric discharge monitoring concentrator 150 by active or passive mode, and data upload to the monitoring concentrator 150 that discharges is for further processing.
The network switch 140 is to carry out the bridge of data transmission between monitoring terminal 120 and electric discharge monitoring concentrator 150.The network switch 140 can be realized carrying out data transmission between a plurality of monitoring terminals 120 and electric discharge monitoring concentrator 150 simultaneously.Electric discharge monitoring concentrator 150 also can be controlled a plurality of monitoring terminals 120 by the network switch 140 simultaneously.
Electric discharge monitoring concentrator 150 comprises processing module that data analysis that the network switch 140 is transmitted processes, the display module that the network switch is passed memory module that 140 data are stored and the analysis processing result of processing module is shown.Display module herein is liquid crystal display.Thereby electric discharge monitoring concentrator 150 can be processed the information such as discharge capacity size, discharge position and electric discharge type that obtain high-tension cable 200 by the data analysis that the network switch 140 is transmitted, and can be stored the local discharge signal historical data of long term monitoring.Electric discharge monitoring concentrator 150 can be realized regularly or continuously high-tension cable 200 be carried out to Partial Discharge Detection by sensor 110, monitoring terminal 120 and the network switch 140, and not affect the running status of high-tension cable 200.Therefore, this high-tension cable local discharge on-line monitoring device can be realized the on-line PD monitoring to high-tension cable.
Between monitoring terminal 120, the network switch 140 and electric discharge monitoring concentrator 150, by optical fiber 130, being connected can reduce disturbance the higher sensitivity of acquisition.
Please refer to Fig. 2, this high-tension cable local discharge on-line monitoring device comprises a plurality of monitoring terminals that mutually are cascaded 120, each monitoring terminal 120 is connected with the network switch 140 with the corresponding connection of at least one sensor 110, one of them monitoring terminal 120 in a plurality of monitoring terminals that mutually are cascaded 120.Monitoring terminal 120 comprises a plurality of network communication interfaces, and a plurality of like this monitoring terminals 120 just can be cascaded by network communication interface.For example, the quantity of monitoring terminal 120 herein is four, is respectively the first monitoring terminal, the second monitoring terminal, the 3rd monitoring terminal and the 4th monitoring terminal.Wherein, the first monitoring terminal and the second monitoring terminal connect together by network communication interface, the second monitoring terminal and the 3rd monitoring terminal connect together by network communication interface, the 3rd monitoring terminal and the 4th monitoring terminal connect together by network communication interface, and the first monitoring terminal and the network switch 140 connect together by network communication interface.Each monitoring terminal 120 and one group of corresponding connection of sensor.Each group sensor comprises three sensors herein, the phase high-tension cable on these three sensors difference Monitoring High Voltage Cable 200 in the three-phase high-voltage cable of same position.Each is organized sensor and be equidistant arrangement on Voltage Cable Lines Construction.Like this, this high-tension cable local discharge on-line monitoring device can be realized the shelf depreciation situation of three-phase electricity is carried out to real time on-line monitoring.
The mode all directly be connected with the network switch 140 with respect to each monitoring terminal 120, adopt monitoring terminal 120 adopted to the mode that series connection is connected with the network switch 140 more successively, can facilitate on-the-spot installation and the expansion in later stage, and dirigibility is higher.This be because, during on-the-spot the installation, only each monitoring terminal 120 need be serially connected, and then be connected and get final product with the network switch 140, without each monitoring terminal 120, go to be connected with the network switch 140; Later stage, while expanding, only need be connected the monitoring terminal 120 of needs expansion to get final product into the monitoring terminal 120 connected, very convenient.
The data that 150 pairs of any two adjacent monitoring terminals 120 of electric discharge monitoring concentrator of this high-tension cable local discharge on-line monitoring device transmit are unified to process after processing as one group of data analysis again.It is mainly to carry out the filtering processing that the data that herein adjacent two monitoring terminals 120 transmitted are processed as one group of data analysis.Data after processing after filtering will be further processed through overdischarge monitoring concentrator 150 as one group of data again, further processing is mainly that group Data Detection of judgement has arrived shelf depreciation herein, so just discharge position can be navigated between corresponding adjacent two monitoring terminals 120.And by local discharge signal analysis being obtained to the information such as discharge capacity size, electric discharge type.Therefore, this high-tension cable local discharge on-line monitoring device can navigate to discharge position between two adjacent monitoring terminals 120.
This high-tension cable local discharge on-line monitoring device can be realized high-tension cable partial discharge monitoring and location.Adopt this high-tension cable local discharge on-line monitoring device can not have a power failure at high-tension cable, not under the running status of detachment system, high-tension cable is carried out to insulation characterisitic detection fully automatic, continuous or regularly, for whether understanding and grasping monitored high-tension cable in normal operating condition, in order to determine whether this cable needs maintenance, maintenance investigation position, and how to keep in repair etc. useful information is provided.
This high-tension cable local discharge on-line monitoring device detects online the local discharge signal of high-tension cable and the local discharge signal detected is delivered to monitoring terminal by sensor, the local discharge signal that monitoring terminal transmits sensor carries out pre-service, thereby the local discharge signal that electric discharge monitoring concentrator collects the network switch carries out analyzing and processing and obtains the information whether high-tension cable shelf depreciation occurs, thereby realizes the real time on-line monitoring to the high-tension cable shelf depreciation.This high-tension cable local discharge on-line monitoring device can be real-time the shelf depreciation situation of on-line monitoring high-tension cable.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.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 high-tension cable local discharge on-line monitoring device, it is characterized in that, the sensor that comprises on the cable grounding line that is socketed in high-tension cable or cross interconnected line the discharge signal for gathering high-tension cable, the signal that is connected with sensor and sensor is detected carries out pretreated monitoring terminal, the signal that the network switch that the data that monitoring terminal is transmitted of being connected with monitoring terminal are forwarded and being connected with the network switch transmits the network switch carries out the electric discharge monitoring concentrator of analyzing and processing, between described sensor and monitoring terminal, by concentric cable, be connected, described monitoring terminal, between the network switch and electric discharge monitoring concentrator, by optical fiber, be connected.
2. high-tension cable local discharge on-line monitoring device according to claim 1, it is characterized in that, described high-tension cable local discharge on-line monitoring device comprises a plurality of monitoring terminals that mutually are cascaded, each monitoring terminal is connected with the described network switch with the corresponding connection of at least one sensor, one of them monitoring terminal in a plurality of monitoring terminals that mutually are cascaded.
3. high-tension cable local discharge on-line monitoring device according to claim 2, is characterized in that, described monitoring terminal comprises a plurality of network communication interfaces, and a plurality of monitoring terminals are cascaded by described network communication interface.
4. high-tension cable local discharge on-line monitoring device according to claim 3, it is characterized in that, each monitoring terminal and one group of corresponding connection of sensor, each group sensor comprises three sensors, the phase high-tension cable on described three sensors difference Monitoring High Voltage Cable in the three-phase high-voltage cable of same position.
5. high-tension cable local discharge on-line monitoring device according to claim 4, is characterized in that, the sensor of respectively organizing of described high-tension cable local discharge on-line monitoring device is equidistant arrangement on Voltage Cable Lines Construction.
6. high-tension cable local discharge on-line monitoring device according to claim 4, is characterized in that, described sensor is electromagnetic sensor.
7. high-tension cable local discharge on-line monitoring device according to claim 4, is characterized in that, described sensor is the Split type current transformer.
8. high-tension cable local discharge on-line monitoring device according to claim 4, it is characterized in that, described electric discharge monitoring concentrator comprises memory module that processing module that data analysis that the network switch is transmitted processes, the data that the network switch is transmitted are stored and the display module that the analysis processing result of processing module is shown.
9. high-tension cable local discharge on-line monitoring device according to claim 8, is characterized in that, described display module is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320371944.0U CN203376439U (en) | 2013-06-26 | 2013-06-26 | High voltage cable local discharge on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320371944.0U CN203376439U (en) | 2013-06-26 | 2013-06-26 | High voltage cable local discharge on-line monitoring device |
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| CN203376439U true CN203376439U (en) | 2014-01-01 |
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| CN201320371944.0U Expired - Lifetime CN203376439U (en) | 2013-06-26 | 2013-06-26 | High voltage cable local discharge on-line monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364695A (en) * | 2013-06-26 | 2013-10-23 | 苏州光格设备有限公司 | Local discharging on-line monitoring device of high-voltage cable |
| CN103809090A (en) * | 2014-02-19 | 2014-05-21 | 广西电网公司电力科学研究院 | Test equipment for partial discharge of ultra-low frequency cable based on optical electric field transducer |
| CN104698355A (en) * | 2015-03-20 | 2015-06-10 | 成都吉普斯能源科技有限公司 | On-line diagnosing method of high-voltage cable partial discharge |
-
2013
- 2013-06-26 CN CN201320371944.0U patent/CN203376439U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364695A (en) * | 2013-06-26 | 2013-10-23 | 苏州光格设备有限公司 | Local discharging on-line monitoring device of high-voltage cable |
| CN103809090A (en) * | 2014-02-19 | 2014-05-21 | 广西电网公司电力科学研究院 | Test equipment for partial discharge of ultra-low frequency cable based on optical electric field transducer |
| CN104698355A (en) * | 2015-03-20 | 2015-06-10 | 成都吉普斯能源科技有限公司 | On-line diagnosing method of high-voltage cable partial discharge |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215123 3C, 3D, Aoyang Shunchang building, 270 Dongping street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Suzhou Guangge Technology Co.,Ltd. Address before: Room b704, building 2, creative industry park, 328 Xinghu street, Suzhou Industrial Park, Jiangsu Province Patentee before: SUZHOU GUANGGE EQUIPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |