CN202870192U - Lightning-arrester on-line monitoring device - Google Patents
Lightning-arrester on-line monitoring device Download PDFInfo
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- CN202870192U CN202870192U CN201220442745.XU CN201220442745U CN202870192U CN 202870192 U CN202870192 U CN 202870192U CN 201220442745 U CN201220442745 U CN 201220442745U CN 202870192 U CN202870192 U CN 202870192U
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- lightning arrester
- lightning
- arrester
- information data
- data collecting
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Abstract
The utility model discloses a lightning-arrester on-line monitoring device, comprising a monitor connected with a lightning arrester, a lightning-arrester information-data acquisition unit, a lightning-arrester signal-transformation unit and an output unit, wherein the information-data acquisition unit, the signal-transformation unit and the output unit are arranged in the monitor. The lightning-arrester information-data acquisition unit and the lightning-arrester signal-transformation unit are connected with a serial bus to a collection concentrator by a digital interface of the output unit. The collection concentrator is connected with a protocol converter. The protocol converter is connected with a link-station control layer and a network monitoring center. The device can realize correct detection of leakage total current of the lightning arrester, resistive components thereof and action time of the lightning arrester. The device can determine operation states of the lightning arrester intelligently and accurately, carry out prediction to early stage faults, adopt an IEC 61850 protocol to connect with the network and is suitable for digitization transformer stations and intelligent stations.
Description
Technical field
The utility model relates to the concentrated online intelligent network monitoring device of lightning arrester in a kind of station, the Real-Time Monitoring of the lightning arrester running status of bus, main transformer and neutral point and line port in the station of various electric pressures be can be suitable for, and Internet Transmission and the monitoring of intelligent station gone for.
Background technology
Metal oxide arrester (being called for short MOA) because of the maturation of its superior protective value, valve block and manufacture process, is widely used in electric system.For the safe operation of electrical network, need do flash test one time every year by the requirement of high-tension apparatus operating standard, so that MOA is carried out early stage fault diagnosis.But the needs along with economy, cultural development, power supply reliability and the quality of power supply to electrical network require to improve constantly, annual power failure test is very difficult, and especially ultra-high-tension power transmission line has caused the power supply reliability of electrical network and the safe operation contradiction of MOA.In order to strengthen the monitoring to the unattended substation primary equipment, the MOA leakage current is carried out networking concentrate in real time on-line monitoring, not only can uninterruptedly monitor the running status of MOA, reduced simultaneously the non-fault power off time of equipment, meet the requirement of operation of power networks, be conducive to the raising of Utilities Electric Co.'s yield-power, the intellectuality of promotion electric substation, have good application value.
At present the leakage current meter is installed in the most of employing of the monitoring of MOA at the scene and carried out on-line monitoring, and require to carry out periodic test in conjunction with rules.For this mode, need operator regularly to check, can't satisfy the requirement of requirement of real-time and the unattended substation of operation of power networks; This mode can not reflect the inherent characteristic of MOA fully really simultaneously, comprise the insulating medium leakage current of MOA, conduction current and other stray current of its surface filth medium owing to flow through the electric current of leakage current meter, obviously, the leakage current meter can not accurate response MOA the insulating medium characteristic, can not change again traditional anti-pollution flashover method.Periodic test then needs application to have a power failure, and this certainly will increase transmission facility non-fault power off time, and artificial regularly to in-site measurement, also just judges the current operation characteristic of MOA, can not satisfy the requirement of real-time of operation of power networks.Now, also there is part producer to release and adopts the automatically mode of monitoring, the unified collection of signal of leakage current meter reported, realized the on-line monitoring of MOA leakage current, but owing to can only adopt total current to carry out the monitoring of MOA state, can not reliably judge the running status of MOA, the test that also needs to have a power failure is determined, more can not realize Incipient Fault Diagnosis and the warning of MOA, electrical production and operation are affected.
This shows that all there is certain limitation in the various measurement mechanisms of in the past releasing: on the one hand, can not can not reflect objectively the inherent characteristic of MOA; On the other hand, reliable monitoring and the Incipient Fault Diagnosis of MOA running status can not be realized, demand and the development of modern each unattended substation can not be adapted to.In addition, along with present rapid development of economy, increasing to the demand of electric power, cause the in recent years continuous growth of newly-built transformer station, the workload of MOA monitoring is increased fast, be badly in need of numerous MOA of a plurality of transformer stations are realized the concentrated monitoring of network, improve monitoring efficient.For this reason, take full advantage of the exploitation of modern monitoring means and network technology and satisfy online concentrated monitoring network of above MOA that require, that be suitable for unattended substation, realization is concentrated monitoring to the automatic real-time online intelligence of the whole MOA in all transformer stations, to enhancing productivity, ensure that the reliability service of electric system has great importance.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, changed original the shortcoming that independent monitoring can not be networked to total current, a kind of lightning arrester on-Line Monitor Device is provided, this device can realize lightning arrester is revealed the correct detection of total current and resistive component and lightning arrestor movement number of times, and the running status of lightning arrester is carried out intelligence accurately judge, can predict the initial failure of lightning arrester, and adopt the IEC61850 stipulations to network, be applicable to digital transformer substation and intelligent station.
The purpose of this utility model realizes by following technical proposals.
A kind of lightning arrester on-Line Monitor Device, comprise the monitor that links to each other with lightning arrester, and being arranged on lightning arrester information data collecting unit, lightning arrester signal conversion unit and output unit in the monitor, described lightning arrester information data collecting unit is connected the output unit digital interface and connects universal serial bus to gathering hub with the lightning arrester signal conversion unit; Described collection hub links to each other with the stipulations transducer, and the stipulations transducer links to each other with connection station level and network monitoring center.
Further, described monitor is made of the gauge outfit of several connections parallel with one another, and connects by universal serial bus.
Further, described gauge outfit is by the operation counter of lightning arrester information data collecting unit Real-time Collection lightning arrester run action number of times.Described lightning arrester information data collecting unit is by the detection of Pulse induction device realization to the lightning arrestor movement number of times.
Further, be provided with the milliammeter of the Leakage Current under the lightning arrester information data collecting unit Real-time Collection lightning arrester working voltage on the described gauge outfit.
Further, be provided with the luminotron that connects electricity demonstration and caution on the described gauge outfit.
The utility model is for the characteristics of MOA leakage current signal faint (milliampere or microampere rank) and strong jamming running environment, adopt shield guard technology, high input impedance signal front-end collection technology and integrated digital and analog filtering technology, make feeble signal directly be converted to digital signal at the front end collection in worksite, realize MOA operating parameter signal precise figures teletransmission and collection.
Adopt the Pulse induction device realization of the high isolated insulation intensity of high sensitivity to the correct detection of MOA action (superpotential) number of times; and adopt multilevel decompression resist technology and multistage photoelectricity quarantine measures, effectively solve when MOA moves noble potential impact failure and interference to system.
For realizing the accurate judgement of MOA running status, the mode that adopts multistage hardware filtering and advanced numerical software filtering to combine is eliminated the interference that persistent current is introduced in conversion, transmission and gatherer process, ensure the precision of signals collecting; Based on the knowledge base information of automatic establishment, the trend that analysis-by-synthesis contrast MOA operational factor changes adopts the intelligent compound judgment mode of horizontal and vertical self-adaptation, realizes the accurate judgement to the MOA running status.
Be Real-Time Monitoring and the network alarming of realizing terminal user Network Based, overcome the limitation of traditional Client/Server, improve monitoring efficient, the network real-time monitoring technology of the utility model device adopts the IEC61850 stipulations.These stipulations are typical feature of novel digital station and intelligent station, and network implementation monitoring and the control of the interior all devices of can realizing standing realize the network digital Real Time Monitoring of real meaning.
The beneficial effects of the utility model are, because the input of the online network monitor device of MOA, not only for realizing the network automatically monitoring, all transformer stations made condition, but and also Condition Based Maintenance Putting in Practice of MOA, with former annually high pressure power failure test, 3 years can be changed into once, artificial, material, cost of equipment and other correlative charges of overhaul test will be saved every year on average
2/3
For the indirect economic effect of enterprise, because the input of the online network monitor device of MOA, reducing frequency of power cut, increase power supply reliability, the raising quality of power supply etc. all is huge social benefits.In addition, according to the real time record of network monitor device to the on-the-spot service data of each MOA, being conducive to electric operational accident or owing to the accidents caused analysis of MOA, is a large amount of actual operating data data of safety in production operation accumulation of electric system.
Description of drawings
Fig. 1 is monitoring system structural drawing of the present utility model;
Fig. 2 is the outside drawing of gauge outfit of the present utility model;
Fig. 3 is installation diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1, shown in Figure 2, a kind of lightning arrester on-Line Monitor Device, comprise the monitor that links to each other with lightning arrester, and being arranged on lightning arrester information data collecting unit, lightning arrester signal conversion unit and output unit in the monitor, lightning arrester information data collecting unit is connected the output unit digital interface and connects universal serial bus to gathering hub with the lightning arrester signal conversion unit; Gather hub and link to each other with the stipulations transducer, the stipulations transducer links to each other with connection station level and network monitoring center.
In this device, monitor is made of the gauge outfit of several connections parallel with one another, and connects by universal serial bus.
Among Fig. 2, be provided with the digital counting device 1 of lightning arrester information data collecting unit Real-time Collection lightning arrester run action number of times on the gauge outfit, wherein, lightning arrester information data collecting unit takes the Pulse induction device realization of the high isolated insulation intensity of high sensitivity to the detection of lightning arrestor movement number of times; Be provided with the milliammeter 3 of the Leakage Current under the lightning arrester information data collecting unit Real-time Collection lightning arrester working voltage on the gauge outfit; Also be provided with on the gauge outfit and connect the luminotron 2 that electricity shows and warns.
2 gauge outfits are Stainless Steel Shell among the figure, and the gauge outfit front is glass, and meter pointer and digital counting value can directly be read at the scene; Its mounting seat is casting aluminium material and carries out sealed damp-proof.
Referring to shown in Figure 3, be the installation diagram of the utility model device, this device be installed in lightning arrester base with apart from 1-2 rice, ground, applicable to installation and the monitoring of the lightning arrester of various electric pressures.
Leakage Current is indicated in real time by gauge outfit milliammeter 3 during lightning arrester work, and action frequency is counted by digital counting device 1 and read.Collecting unit carries out the data of gauge outfit digital collection and carries out frequency analysis, isolates its resistive component, and the logarithmic code count value gathers simultaneously, is exported by the mode of universal serial bus by output unit simultaneously.
The utility model device carries out digital conversion to lightning arrester Leakage Current and action frequency, and carries out the lightning arrester operational factor by digital interface and upload, and reports station level through being converted to the IEC61850 stipulations after unified the collection.Wherein, the lightning arrester signal conversion unit, the Leakage Current under the Real-time Collection lightning arrester working voltage is isolated its resistive component by numerical analysis, the method of proportion analysis is separated the third harmonic in the Leakage Current, reacts the variation of current in resistance property non-linear partial.Action frequency to the lightning arrester signal carries out digital counting, and is stored in the nonvolatile memory of collecting unit.Mode by universal serial bus is unified to gather to all lightning arresters, and all lightning arrester converter units all are connected in parallel on the universal serial bus, reduce the cable distribution that lightning arrester gathers in the station.But the essential information that the stipulations transducer sends each lightning arrester converter unit transmits the standard communication output that meets the IEC61850 stipulations that stipulations are converted to can stand Intranet and optical fiber transmission, is convenient to connect station level and network monitoring.
Can realize the standing on-line file monitoring of interior whole lightning arresters of this device, each signal conversion unit is by a universal serial bus parallel connection, can realize that single bus is to the signals collecting of many lightning arresters, Macro or mass analysis and intelligent decision through collector, the result of lightning arrester running status is converted to network stipulations in the station of standard by the IEC61850 protocol converter, realize the network monitor of lightning arrester in the station.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of submitting to.
Claims (6)
1. lightning arrester on-Line Monitor Device, it is characterized in that: comprise the monitor that links to each other with lightning arrester, and being arranged on lightning arrester information data collecting unit, lightning arrester signal conversion unit and output unit in the monitor, described lightning arrester information data collecting unit is connected the output unit digital interface and connects universal serial bus to gathering hub with the lightning arrester signal conversion unit; Described collection hub links to each other with the stipulations transducer, and the stipulations transducer links to each other with connection station level and network monitoring center.
2. a kind of lightning arrester on-Line Monitor Device according to claim 1, it is characterized in that: described monitor is made of the gauge outfit of several connections parallel with one another, and connects by universal serial bus.
3. a kind of lightning arrester on-Line Monitor Device according to claim 2 is characterized in that: be provided with the operation counter (1) by lightning arrester information data collecting unit Real-time Collection lightning arrester run action number of times on the described gauge outfit.
4. a kind of lightning arrester on-Line Monitor Device according to claim 3 is characterized in that: described lightning arrester information data collecting unit is realized detection to the lightning arrestor movement number of times by Pulse induction device.
5. a kind of lightning arrester on-Line Monitor Device according to claim 2 is characterized in that: the milliammeter (3) that is provided with the Leakage Current under the lightning arrester information data collecting unit Real-time Collection lightning arrester working voltage on the described gauge outfit.
6. a kind of lightning arrester on-Line Monitor Device according to claim 2 is characterized in that: be provided with on the described gauge outfit and connect the luminotron (2) that electricity shows and warns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220442745.XU CN202870192U (en) | 2012-08-31 | 2012-08-31 | Lightning-arrester on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220442745.XU CN202870192U (en) | 2012-08-31 | 2012-08-31 | Lightning-arrester on-line monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN202870192U true CN202870192U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220442745.XU Expired - Lifetime CN202870192U (en) | 2012-08-31 | 2012-08-31 | Lightning-arrester on-line monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616603A (en) * | 2013-12-13 | 2014-03-05 | 遵义供电局 | Novel intelligent lightning arrester monitoring device |
| CN105426649A (en) * | 2014-09-18 | 2016-03-23 | 国家电网公司 | Separation calculating method for leakage current |
| CN110940931A (en) * | 2019-09-18 | 2020-03-31 | 国网浙江省电力有限公司金华供电公司 | Lightning arrester leakage current online monitoring system and method |
-
2012
- 2012-08-31 CN CN201220442745.XU patent/CN202870192U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616603A (en) * | 2013-12-13 | 2014-03-05 | 遵义供电局 | Novel intelligent lightning arrester monitoring device |
| CN105426649A (en) * | 2014-09-18 | 2016-03-23 | 国家电网公司 | Separation calculating method for leakage current |
| CN105426649B (en) * | 2014-09-18 | 2018-03-27 | 国家电网公司 | A kind of separation computational methods of Leakage Current |
| CN110940931A (en) * | 2019-09-18 | 2020-03-31 | 国网浙江省电力有限公司金华供电公司 | Lightning arrester leakage current online monitoring system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |