CN103809083A - Cable partial discharge monitoring system with double-CPU structure - Google Patents
Cable partial discharge monitoring system with double-CPU structure Download PDFInfo
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- CN103809083A CN103809083A CN201210455719.5A CN201210455719A CN103809083A CN 103809083 A CN103809083 A CN 103809083A CN 201210455719 A CN201210455719 A CN 201210455719A CN 103809083 A CN103809083 A CN 103809083A
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Abstract
The invention discloses a cable partial discharge monitoring system with a double-CPU structure. The cable partial discharge monitoring system comprises a field monitoring host machine, multiple local area network inner monitoring machines connected with the field monitoring host machine through switches and multiple remote monitoring machines connected with the field monitoring host machine through an Internet network. One or more monitoring terminals are connected onto the field monitoring host machine and comprise FPGA processor modules, ARM processor modules connected with the FPGA processor modules and USB communication circuit modules connected with the ARM processor modules. The input ends of the FPGA processor modules are connected with signal conditioning circuit modules, the signal conditioning circuit modules are composed of amplification circuits, filter circuits and A/D conversion circuits which are connected in sequence, and the input ends of the amplification circuits are connected with very high frequency sensors and ultra high frequency sensors. The cable partial discharge monitoring system with the double-CPU structure is high in sensitivity and reliability, good in anti-interference capacity and real-timeliness, convenient to use and install, good in using effect and a convenient to popularize and use.
Description
Technical field
The present invention relates to cable status monitoring technical field, especially relate to a kind of cable local discharge monitoring system of dual-cpu structure.
Background technology
Because cable is compared and had the advantages such as the impact of safe and reliable, climate is little, floor area is little, hidden with trolley wire, so cable is more and more applied on high-low pressure transmission line of electricity.But, the continuous generation that increases and be accompanied by cable fault that cable uses, because power cable generally all buries in underground, once break down, searching is got up very difficult, often needs to spend several hours, even the time of several days.Cable local discharge on-line monitoring technique is the important means of finding in time accident potential, improving power supply reliability, therefore studies the local partial discharge monitoring technology of cable and has great importance.Partial-discharge ultrahigh-frequency on-line monitoring system of the prior art, normally receive the ultrahigh-frequency signal of local discharge generation by superfrequency sensor, but ultrahigh-frequency signal cannot be demarcated partial discharge quantity, now mostly be that single CPU processes multi-channel data simultaneously, data acquisition transmission and processing time are more than actual signal length effective time, real-time is poor, processing time is long, the discharge signal of processing one second arrived and counts minutes with tens of seconds, sudden electric discharge is easily missed, the poor reliability of monitoring, maintenance cost is high.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of cable local discharge monitoring system of dual-cpu structure is provided, it is highly sensitive, and reliability is high, and antijamming capability is strong, real-time is high, maintenance cost is low, easy to install and use, long service life, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of cable local discharge monitoring system of dual-cpu structure, it is characterized in that: comprise field monitoring main frame, monitoring machine and multiple remote monitoring machines of joining by Internet network and field monitoring main frame in multiple LAN (Local Area Network) of joining by switch and field monitoring main frame, on described field monitoring main frame, be connected to one or more monitoring terminals for cable local discharge is monitored, described monitoring terminal comprises FPGA processor module, the arm processor module of joining with FPGA processor module and the usb communication circuit module joining with arm processor module, described arm processor module is joined by usb communication circuit module and field monitoring main frame, the input end of described FPGA processor module is connected to for signal is amplified, the signal conditioning circuit module of filtering and A/D conversion process, described signal conditioning circuit module is by the amplifying circuit joining successively, filtering circuit and A/D change-over circuit form, the input end of described amplifying circuit is connected to for the very high frequency(VHF) signal to cable local discharge signal and detects and be used as phase reference and the very high frequency(VHF) sensor of measurement triggering and the superfrequency sensor for the ultra-high frequency signal of cable local discharge signal is detected for the power frequency component that extracts cable, described very high frequency(VHF) sensor sleeve is in cable intermediate joint end, described superfrequency sensor sleeve is at the cross interconnected line root of cable intermediate joint.
The cable local discharge monitoring system of above-mentioned a kind of dual-cpu structure, is characterized in that: in described field monitoring main frame, LAN (Local Area Network), monitoring machine and remote monitoring machine are industrial control computer.
The cable local discharge monitoring system of above-mentioned a kind of dual-cpu structure, is characterized in that: described FPGA processor module is chip EP3C55F484C7N.
The cable local discharge monitoring system of above-mentioned a kind of dual-cpu structure, is characterized in that: described arm processor module is chip ARM1156T2.
The present invention compared with prior art has the following advantages:
1, the present invention has adopted very high frequency(VHF) sensor and superfrequency sensor to detect cable local discharge signal, and the dual-cpu structure that has designed FPGA processor module and arm processor module carries out analyzing and processing to signal, can effectively avoid the impact of the undesired signals such as corona, overcome the shortcoming of traditional cable partial discharge monitoring system rejection to disturbance ability, greatly improved sensitivity, reliability and the antijamming capability of system.
2, the present invention can measure the size of cable local discharge amount, and accurate analysis goes out the ruuning situation of cable part.
3, real-time of the present invention is high, easy to install, long service life, and maintenance cost is low.
4, of the present invention practical, result of use is good, is convenient to promote the use of.
In sum, the present invention is highly sensitive, and reliability is high, and antijamming capability is strong, and real-time is high, and maintenance cost is low, easy to install and use, long service life, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Description of reference numerals:
1-field monitoring main frame; 2-switch; Monitoring machine in 3-LAN (Local Area Network);
4-Internet network; 5-remote monitoring machine; 6-FPGA processor module;
7-arm processor module; 8-usb communication circuit module; 9-amplifying circuit;
10-filtering circuit; 11-A/D change-over circuit; 12-very high frequency(VHF) sensor;
13-superfrequency sensor.
Embodiment
As shown in Figure 1, the present invention includes field monitoring main frame 1, monitoring machine 3 and multiple remote monitoring machines 5 of joining by Internet network 4 and field monitoring main frame 1 in multiple LAN (Local Area Network) of joining by switch 2 and field monitoring main frame 1, on described field monitoring main frame 1, be connected to one or more monitoring terminals for cable local discharge is monitored, described monitoring terminal comprises FPGA processor module 6, the arm processor module 7 of joining with FPGA processor module 6 and the usb communication circuit module 8 joining with arm processor module 7, described arm processor module 7 is joined by usb communication circuit module 8 and field monitoring main frame 1, the input end of described FPGA processor module 6 is connected to for signal is amplified, the signal conditioning circuit module of filtering and A/D conversion process, described signal conditioning circuit module is by the amplifying circuit 9 joining successively, filtering circuit 10 and A/D change-over circuit 11 form, the input end of described amplifying circuit 9 is connected to for the very high frequency(VHF) signal to cable local discharge signal and detects and be used as phase reference and the very high frequency(VHF) sensor 12 of measurement triggering and the superfrequency sensor 13 for the ultra-high frequency signal of cable local discharge signal is detected for the power frequency component that extracts cable, described very high frequency(VHF) sensor 12 is enclosed within cable intermediate joint end, described superfrequency sensor 13 is enclosed within the cross interconnected line root of cable intermediate joint.
In the present embodiment, in described field monitoring main frame 1, LAN (Local Area Network), monitoring machine 3 and remote monitoring machine 5 are industrial control computer.Described FPGA processor module 6 is chip EP3C55F484C7N.Described arm processor module 7 is chip ARM1156T2.
The course of work of the present invention is: very high frequency(VHF) sensor 12 gathers the very high frequency(VHF) signal in cable local discharge signal, superfrequency sensor 13 gathers the ultrahigh-frequency signal in cable local discharge signal, very high frequency(VHF) signal and ultrahigh-frequency signal amplify through amplifying circuit 9, filtering circuit 10 filtering, A/D change-over circuit 11 gathers and is transported to FPGA processor module 6, FPGA processor module 6 analyzing and processing very high frequency(VHF) signals and ultra-high frequency signal also pass through arm processor module 7, usb communication circuit module 8 transfers data to field monitoring main frame 1, field monitoring main frame 1 analyzing and processing very high frequency(VHF) and superfrequency data, visitor can be by monitoring machine 3 in LAN (Local Area Network), switch 2 and remote monitoring machine 5, Internet network 4 is accessed the data of field monitoring main frame 1, and judge the situation of cable according to the situation of data cable shelf depreciation.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. the cable local discharge monitoring system of a dual-cpu structure, it is characterized in that: comprise field monitoring main frame (1), the interior monitoring machine (3) of multiple LAN (Local Area Network) joining by switch (2) and field monitoring main frame (1) and the multiple remote monitoring machines (5) that join by Internet network (4) and field monitoring main frame (1), on described field monitoring main frame (1), be connected to one or more monitoring terminals for cable local discharge is monitored, described monitoring terminal comprises FPGA processor module (6), the arm processor module (7) of joining with FPGA processor module (6) and the usb communication circuit module (8) joining with arm processor module (7), described arm processor module (7) is joined by usb communication circuit module (8) and field monitoring main frame (1), the input end of described FPGA processor module (6) is connected to for signal is amplified, the signal conditioning circuit module of filtering and A/D conversion process, described signal conditioning circuit module is by the amplifying circuit joining successively (9), filtering circuit (10) and A/D change-over circuit (11) form, the input end of described amplifying circuit (9) is connected to for the very high frequency(VHF) signal to cable local discharge signal and detects and be used as phase reference and the very high frequency(VHF) sensor (12) of measurement triggering and the superfrequency sensor (13) for the ultra-high frequency signal of cable local discharge signal is detected for the power frequency component that extracts cable, described very high frequency(VHF) sensor (12) is enclosed within cable intermediate joint end, described superfrequency sensor (13) is enclosed within the cross interconnected line root of cable intermediate joint.
2. according to the cable local discharge monitoring system of a kind of dual-cpu structure claimed in claim 1, it is characterized in that: in described field monitoring main frame (1), LAN (Local Area Network), monitoring machine (3) and remote monitoring machine (5) are industrial control computer.
3. according to the cable local discharge monitoring system of a kind of dual-cpu structure claimed in claim 1, it is characterized in that: described FPGA processor module (6) is chip EP 3C55F484C 7N.
4. according to the cable local discharge monitoring system of a kind of dual-cpu structure claimed in claim 1, it is characterized in that: described arm processor module (7) is chip ARM1156T2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455719.5A CN103809083A (en) | 2012-11-14 | 2012-11-14 | Cable partial discharge monitoring system with double-CPU structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455719.5A CN103809083A (en) | 2012-11-14 | 2012-11-14 | Cable partial discharge monitoring system with double-CPU structure |
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| Publication Number | Publication Date |
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| CN103809083A true CN103809083A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210455719.5A Pending CN103809083A (en) | 2012-11-14 | 2012-11-14 | Cable partial discharge monitoring system with double-CPU structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749498A (en) * | 2015-01-28 | 2015-07-01 | 西安交通大学 | Portable partial discharge detecting and diagnosing device |
| CN108226772A (en) * | 2016-12-22 | 2018-06-29 | Ls产电株式会社 | For the diagnostic device of switching device |
-
2012
- 2012-11-14 CN CN201210455719.5A patent/CN103809083A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749498A (en) * | 2015-01-28 | 2015-07-01 | 西安交通大学 | Portable partial discharge detecting and diagnosing device |
| CN108226772A (en) * | 2016-12-22 | 2018-06-29 | Ls产电株式会社 | For the diagnostic device of switching device |
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Application publication date: 20140521 |