CN103344852A - On-line monitoring device of high-voltage parallel capacitor - Google Patents
On-line monitoring device of high-voltage parallel capacitor Download PDFInfo
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- CN103344852A CN103344852A CN2013102515830A CN201310251583A CN103344852A CN 103344852 A CN103344852 A CN 103344852A CN 2013102515830 A CN2013102515830 A CN 2013102515830A CN 201310251583 A CN201310251583 A CN 201310251583A CN 103344852 A CN103344852 A CN 103344852A
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Abstract
The invention relates to an on-line monitoring device of a high-voltage parallel capacitor. The on-line monitoring device of the high-voltage parallel capacitor comprises a two-channel collecting module, a data processing module and an alarm management module. The two-channel collecting module is used for collecting all data of a high-voltage parallel capacitor device. The data processing module is connected with the two-channel collecting module, carries out calculation according to collected data and compares calculation results with benchmark judgment parameters. The alarm management module is connected with the data processing module and outputs alarm according to comparison results of the data processing module. The alarm management module is connected with a monitoring system through an interface module. The two-channel collecting module collects the voltages and the currents of the high-voltage parallel capacitor device respectively. The data processing module carries out calculation on the data by adopting a phase current comparison method, a natural vibration frequency method, a loss angle tangent value method, an unbalanced current method and an impedance comparison method. The on-line monitoring device of the high-voltage parallel capacitor can achieve early failure early warning of the high-voltage parallel capacitor device, accuracy of the early warning is improved by adopting multiparameter and multiangle synthetic judgment and mutual authentication, and more accurate data are provided for protection of capacitor devices.
Description
Technical field
The present invention relates to a kind of running status to high-voltage parallel capacitor device carry out real time on-line monitoring, with report to the police according to capacitor element faiture alarm, parallel capacitor device loop harmonic resonance, parallel capacitor device pyrotechnics alarm condition, judge the on-Line Monitor Device of high-voltage parallel capacitor device running status.
Background technology
High-voltage parallel capacitor device is in operational process at present, owing to there is not effective on-Line Monitor Device, when capacitor element generation breakdown fault, be not activated before the protective device tripping operation, parallel capacitor device presents the state of operating with failure, along with further developing of fault, until the protection would trip, excise capacitor device, could find the fault of capacitor, at this moment, fault coverage is often extended; Till will arriving fault too and be accumulated to protection tripping operation for harmonic excess generation resonance; To make fault be extended to the reactor breakdown between adjacent turns for reactor overcurrent heating accident and cause the protection tripping operation.These faults often become afterwards and just can be found, can't effectively control the development of fault in early days, for this reason, the application of shnt capacitor on-Line Monitor Device, can realize the initial failure early warning in advance, become the important technical that improves the capacitor device safe operation.
Along with the unwatched propelling of transformer station, equipment state overhauling also presses for the running status of accurate grasp capacitor kind equipment, at present there is bigger, the ageing not high deficiency of influence that accuracy is not high, be subjected to aspect such as personnel's experience in the way of carrying out state estimation according to the external characteristics of equipment, cause evaluation result and actual conditions deviation bigger, be difficult to reflect equipment running status.
The purposes of high-voltage parallel capacitor on-Line Monitor Device be before capacitor element generation catastrophic failure, during the harmonic resonance of parallel capacitor device loop, overheated the smoldering of parallel capacitor device can send warning information when on fire, reminds the operational management personnel in time parallel capacitor device to be carried out interruption maintenance.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can judge the capacitor on-Line Monitor Device of capacitor health status according to the variation of external circuit operational factor in the parallel capacitor device operational process.
For achieving the above object, the technical solution used in the present invention is:
A kind of high-voltage parallel capacitor on-Line Monitor Device, be used for the running status of high-voltage parallel capacitor device is carried out real time on-line monitoring, it comprises the binary channels acquisition module of every data of gathering described high-voltage parallel capacitor device, be connected with described binary channels acquisition module and calculate and result of calculation and benchmark are judged the data processing module that parameter compares according to the data of gathering, be connected with described data processing module and according to the alarming and managing module of the comparison result outputting alarm in the described data processing module, described alarming and managing module is connected by the supervisory system of interface module with the described high-voltage parallel capacitor device of monitoring.
Preferably, the described data processing module benchmark that is connected with the parameter that described high-voltage parallel capacitor device is set and draws described high-voltage parallel capacitor device judges that the parameter of parameter arranges module.
Preferably, described data processing module also is connected with the task management module.
Preferably, described interface module comprises input/output module, communication module.
Preferably, it also comprises the display module that is connected with described interface module.
Preferably, described binary channels acquisition module is gathered voltage, the electric current of described high-voltage parallel capacitor device respectively.
Preferably, described data processing module adopts phase current relative method, natural frequency of vibration method, loss tangent method, unbalance current method, impedance relative method that described data are calculated.
Because technique scheme is used; the present invention compared with prior art has following advantage: the present invention can realize the early warning of parallel capacitor device initial failure; adopt the accuracy that multiparameter, multi-angle comprehensive are judged, checking improves early warning mutually, for the protection of capacitor equipment provides more accurate data.
Description of drawings
Accompanying drawing 1 is the principle sketch of high-voltage parallel capacitor on-Line Monitor Device of the present invention.
Embodiment
Be further described below in conjunction with the present invention of embodiment shown in the drawings.
Embodiment one: shown in accompanying drawing 1.A kind of high-voltage parallel capacitor on-Line Monitor Device is used for the running status of high-voltage parallel capacitor device is carried out real time on-line monitoring.
This high-voltage parallel capacitor on-Line Monitor Device comprises the binary channels acquisition module of every data of gathering described high-voltage parallel capacitor device, be connected with described binary channels acquisition module and calculate and result of calculation and benchmark are judged data processing module that parameter compares, are connected with described data processing module and according to the alarming and managing module of the comparison result outputting alarm in the described data processing module according to the data of gathering.Described alarming and managing module is connected by the supervisory system (computer monitoring system of transformer substation, auxiliary monitoring system etc.) of interface module with the described high-voltage parallel capacitor device of monitoring.Interface module comprises input/output module, communication module etc., and this interface module also is connected with display module.Described data processing module is connected with the parameter (wiring pattern, connection in series-parallel number, fuse set-up mode etc.) that described high-voltage parallel capacitor device is set and the benchmark that draws described high-voltage parallel capacitor device judges that the parameter of parameter arranges module.Described data processing module also is connected with the task management module, by the task management module, realizes setting, scheduling and management to acquisition tasks.
Described binary channels acquisition module is gathered voltage, the electric current of described high-voltage parallel capacitor device respectively.And described data processing module adopts phase current relative method, natural frequency of vibration method, loss tangent method, unbalance current method, impedance relative method that described data are calculated.If result of calculation and benchmark judge that parameter error is bigger, then produce and report to the police.By interface module warning message is transferred to supervisory system, simultaneously, carry out data by display module and show and alarm.
The present invention can realize the early warning of parallel capacitor device initial failure, adopts the accuracy that multiparameter, multi-angle comprehensive are judged, checking improves early warning mutually, comprehensively realizes parallel capacitor device harmonic resonance, pyrotechnics warning function.For the protection of capacitor equipment provides more accurate data.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. high-voltage parallel capacitor on-Line Monitor Device, be used for the running status of high-voltage parallel capacitor device is carried out real time on-line monitoring, it is characterized in that: it comprises the binary channels acquisition module of every data of gathering described high-voltage parallel capacitor device, be connected with described binary channels acquisition module and calculate and result of calculation and benchmark are judged the data processing module that parameter compares according to the data of gathering, be connected with described data processing module and according to the alarming and managing module of the comparison result outputting alarm in the described data processing module, described alarming and managing module is connected by the supervisory system of interface module with the described high-voltage parallel capacitor device of monitoring.
2. high-voltage parallel capacitor on-Line Monitor Device according to claim 1 is characterized in that: the benchmark that described data processing module is connected with the parameter that described high-voltage parallel capacitor device is set and draws described high-voltage parallel capacitor device judges that the parameter of parameter arranges module.
3. high-voltage parallel capacitor on-Line Monitor Device according to claim 1, it is characterized in that: described data processing module also is connected with the task management module.
4. high-voltage parallel capacitor on-Line Monitor Device according to claim 1, it is characterized in that: described interface module comprises input/output module, communication module.
5. high-voltage parallel capacitor on-Line Monitor Device according to claim 1, it is characterized in that: it also comprises the display module that is connected with described interface module.
6. according to each described high-voltage parallel capacitor on-Line Monitor Device in the claim 1 to 5, it is characterized in that: described binary channels acquisition module is gathered voltage, the electric current of described high-voltage parallel capacitor device respectively.
7. according to each described high-voltage parallel capacitor on-Line Monitor Device in the claim 1 to 5, it is characterized in that: described data processing module adopts phase current relative method, natural frequency of vibration method, loss tangent method, unbalance current method, impedance relative method that described data are calculated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102515830A CN103344852A (en) | 2013-06-24 | 2013-06-24 | On-line monitoring device of high-voltage parallel capacitor |
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| CN2013102515830A CN103344852A (en) | 2013-06-24 | 2013-06-24 | On-line monitoring device of high-voltage parallel capacitor |
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| CN103344852A true CN103344852A (en) | 2013-10-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760431A (en) * | 2013-11-29 | 2014-04-30 | 国家电网公司 | Integrated online monitoring device of parallel capacitor |
| CN106199284A (en) * | 2016-08-17 | 2016-12-07 | 云南电网有限责任公司电力科学研究院 | The resonance method for early warning of capacitor switching and system |
| CN108206508A (en) * | 2016-12-20 | 2018-06-26 | 南京南瑞继保电气有限公司 | A kind of adaptive shunt capacitor impedance protecting method |
| CN112666415A (en) * | 2020-12-18 | 2021-04-16 | 安徽链众电气科技有限公司 | Power capacitor on-line monitoring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760431A (en) * | 2013-11-29 | 2014-04-30 | 国家电网公司 | Integrated online monitoring device of parallel capacitor |
| CN106199284A (en) * | 2016-08-17 | 2016-12-07 | 云南电网有限责任公司电力科学研究院 | The resonance method for early warning of capacitor switching and system |
| CN106199284B (en) * | 2016-08-17 | 2023-04-21 | 云南电网有限责任公司电力科学研究院 | Resonance early warning method and system for capacitor switching |
| CN108206508A (en) * | 2016-12-20 | 2018-06-26 | 南京南瑞继保电气有限公司 | A kind of adaptive shunt capacitor impedance protecting method |
| CN108206508B (en) * | 2016-12-20 | 2019-05-21 | 南京南瑞继保电气有限公司 | A kind of adaptive shunt capacitor impedance protecting method |
| CN112666415A (en) * | 2020-12-18 | 2021-04-16 | 安徽链众电气科技有限公司 | Power capacitor on-line monitoring device |
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Application publication date: 20131009 |