CN205003224U - 500kV owner becomes dc magnetic biasing data and keeps watch on collection system on line - Google Patents
500kV owner becomes dc magnetic biasing data and keeps watch on collection system on line Download PDFInfo
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- CN205003224U CN205003224U CN201520677564.9U CN201520677564U CN205003224U CN 205003224 U CN205003224 U CN 205003224U CN 201520677564 U CN201520677564 U CN 201520677564U CN 205003224 U CN205003224 U CN 205003224U
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Abstract
The utility model relates to a 500kV owner becomes dc magnetic biasing data and keeps watch on collection system on line. Keeping watch on the collection system structure on line and installing respectively on one's body the ware of transformer for temperature sensor, vibration sensor, noise sensor, bias magnetic direct current acquisition terminal is installed on the cubical switchboard of transformer, and temperature sensor, vibration sensor, noise sensor, bias magnetic direct current acquisition terminal are connected to the main acquisition unit that becomes respectively, mainly becomes that acquisition unit passes through optic fibre or the cable links to each other with the background processing unit. The utility model discloses under normal condition, lie in the monitoring especially, under the normal condition, then take low sample rate to observe, can set up to out -of -limit or sudden change like the entry condition, satisfying under the definite value circumstances, go on carrying out high sample rate collection to neutral point direct current, vibration, noise and temperature, leave switching value signal and trouble record ripples device simultaneously and form the joint -action mechanism, main change respectively incline corresponding analog quantity and switching value are gathered to starting breakdown record ripples device.
Description
Technical field
The utility model relates to the DC magnetic biasing data Real-Time Monitoring field of transforming plant primary equipment main transformer, is specifically related to a kind of on-line monitoring acquisition system of electrical equipment magnetic bias data of 500KV main transformer.
Background technology
In the conveying electric process of electric energy, direct current transportation is large by its transmission capacity, the feature application such as the low and voltage stabilization of loss are more and more extensive, but, it inevitably runs in conveying electric process under one pole the earth mode, act as another root wire of DC power transmission line in this manner largely, the electric current flowing through the earth is the running current of DC transmission engineering, now the electric current had up to a few kiloampere is injected the earth from direct current grounding pole, cause the existence of electric field in ground, thus DC current is flow through in the transformer of neutral-point solid ground, produce DC magnetic biasing, its exciting current and harmonic wave are sharply increased, iron core cutter " temperature rise " noise and vibration increases and produces higher hamonic wave, the safe and stable operation of harm transformer and electric system.
Main-transformer (abbreviation main transformer) is the normal visual plant of Operation of Electric Systems.For the operation of main transformer, the parameter such as temperature, vibration, noise of its equipment itself reflects its transformer and runs health status really.According to research reports, when there is DC magnetic biasing, in transformer station inside transformer temperature raise, noise and vibration aggravation, the lighter causes transformer to stop transport, and the explosion caused and fire of severe one, has a strong impact on production safety.Occurring to accident from the aggravation of overheated, vibrating noise generally can process for some time, if find temperature, vibration early, noise is abnormal and process in time, will greatly reduce Accident of Transformer.Transformer DC magnetic bias fault analysis early warning and trouble-saving important means to the running temperature of transformer, vibration, noise monitor.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned prior art Problems existing, a kind of 500kV main transformer DC magnetic biasing online data is provided to monitor acquisition system, in-service monitoring acquisition system of the present utility model in normal state, focus on monitoring, under normal circumstances, then take low sampling rate to observe, parameters can be set to definite value, as direct current amplitude, temperature value, vibration values, level of noise simultaneously.Entry condition can be set to out-of-limit, sudden change etc., meeting in definite value situation, carry out the sampling of high sampling rate, and, because itself and failure wave-recording form joint-action mechanism, when whole fault recording system starts record ripple, also can start monitoring device, carry out centering point DC current, vibration, noise and temperature and carry out high sampling rate collection.
A kind of 500kV main transformer DC magnetic biasing online data monitors acquisition system, is made up of magnetic bias direct current monitoring terminal, temperature sensor, vibration transducer, sensor noise, main transformer collecting unit, background processing unit; It is characterized in that: temperature sensor, vibration transducer, sensor noise are arranged on it the device of transformer respectively, magnetic bias direct current acquisition terminal is arranged on the switch cubicle of transformer, temperature sensor, vibration transducer, sensor noise, magnetic bias direct current acquisition terminal are connected respectively to main transformer collecting unit, and main transformer collecting unit is connected with background processing unit by optical fiber or cable.
500kV main transformer DC magnetic biasing online data described in utilization monitors the method for acquisition system, it is characterized in that carrying out according to the following steps:
(1). be separately installed with temperature sensor, vibration transducer, sensor noise with it at the device of main transformer, magnetic bias direct current acquisition terminal is arranged on the switch cubicle of transformer, be responsible for the collection of DC current signal, DC current signal, temperature signal, vibration signal and noise signal that temperature sensor, vibration transducer, sensor noise measure are converted to electric signal by main transformer collecting unit in real time, be converted to digital signal by signal conditioning circuit to preserve, reach background processing unit by optical fiber or cable, carry out analyzing and judging;
(2). the signal value that the DC current that main transformer collecting unit first judges to gather, temperature, vibration and sensor noise export whether be greater than the threshold values of setting separately or rate of change is out-of-limit separately time, when each collection value is greater than separately setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, now preserve the data of main transformer collecting unit buffer zone and carry out high speed acquisition; When each collection value of main transformer collecting unit is not greater than respective setting threshold values, then will carry out low speed collection, Real-Time Monitoring;
(3). when main transformer collecting unit judges that each collection value is greater than respective setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, output on-off model, this signal access fault wave recording device, in order to startup separator record ripple simultaneously;
(4). the signal value that each DC current that background processing unit reception main transformer collecting unit gathers, temperature, vibration and sensor noise export, and data are saved as the COMTRADE data of standard, send to transformer station's background monitoring center or dispatching terminal by the mode of networking, realize the seamless of data and share.
Main transformer collecting unit first judges the DC current gathered, temperature, the signal value that vibration and sensor noise export whether be greater than the threshold values of separately setting or respective rate of change out-of-limit time, when each collection value is greater than separately setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, now preserve the data of main transformer collecting unit buffer zone and carry out high speed acquisition, and startup separator wave recording device carries out Real-Time Monitoring, realize the monitoring of main transformer DC magnetic biasing data, and the ruuning situation abnormality alarming to main transformer, realize precognition and the analysis of main transformer DC magnetic biasing, for the fault pre-alarming of the main transformer in transformer station provides reference frame.
This in-service monitoring acquisition system in normal state, focuses on monitoring, under normal circumstances, then takes low sampling rate to observe, and parameters can be set to definite value, as direct current amplitude, temperature value, vibration values, level of noise simultaneously.Entry condition can be set to out-of-limit or sudden change etc., meeting in definite value situation, carry out the sampling of high sampling rate, and, because itself and failure wave-recording form joint-action mechanism, when whole fault recording system starts record ripple, also can start monitoring device, carry out centering point DC current, vibration, noise, temperature etc. and carry out high sampling rate collection.
The beneficial effects of the utility model: the utility model can not only by main transformer DC magnetic biasing situation, the situation of change such as direct current, temperature, vibration, noise, simultaneously when D. C. value, temperature value, vibration values, level of noise sudden change or its rate of change occurring being out-of-limit, system can send in time carries out high speed acquisition, start other fault wave recording devices, achieve the monitoring of main transformer DC magnetic biasing data, and the ruuning situation abnormality alarming to main transformer, realize precognition and the analysis of main transformer DC magnetic biasing, for the fault pre-alarming of the main transformer in transformer station provides reference frame.
This in-service monitoring acquisition system in normal state, focus on monitoring, under normal circumstances, low sampling rate is then taked to observe, parameters can be set to definite value simultaneously, meeting in definite value situation, carry out the sampling of high sampling rate, and, because itself and failure wave-recording form joint-action mechanism, when whole fault recording system starts record ripple, also monitoring system can be started, carry out centering point DC current, vibration, noise, temperature etc. carry out high sampling rate collection, the temperature variation of real-time watch device and electrical node, and by setting up analytical model, under prediction DC magnetic biasing, temperature, vibration, the variation tendency of noise and equipment state, for maintainer carries out the data reference that equipment state overhauling provides important, reduce electrical equipment accident, ensure electrical equipment safe operation.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is that main transformer magnetic bias of the present utility model monitoring is charted with fault wave recording device gear.
Fig. 3 is main transformer magnetic bias monitoring device working-flow of the present utility model.
Embodiment
The utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1, in-service monitoring acquisition system of the present utility model, is made up of magnetic bias direct current monitoring terminal, temperature sensor, vibration transducer, sensor noise, main transformer collecting unit, background processing unit; It is characterized in that: temperature sensor, vibration transducer, sensor noise are arranged on it the device of transformer respectively, magnetic bias direct current acquisition terminal is arranged on the switch cubicle of transformer, temperature sensor, vibration transducer, sensor noise, magnetic bias direct current acquisition terminal are connected respectively to main transformer collecting unit, and main transformer collecting unit is connected with background processing unit by optical fiber or cable.The software that the utility model adopts is all use software conventional at present.
As shown in Figure 1; The data-transmission mode of this in-service monitoring acquisition system is that bias current, temperature, vibration and the noise signal that sensor collects by main transformer collecting unit is directly sent to the background processing unit of the main transformer in transformer station by optical fiber or cable, simultaneously, the fault wave recording device relevant to main transformer is formed joint-action mechanism, jointly realizes monitoring in real time to all electric parameters relevant to main transformer and non-electric quantity.
The utility model is the Real-Time Monitoring being designed for the DC current of main transformer DC magnetic biasing, temperature, vibration and noise, by monitoring the DC current of main transformer, temperature, vibration and noise continuously, the order of severity of main transformer main flow magnetic bias can be determined, when there is DC current values, temperature value, vibration values, level of noise or its rate of change and being out-of-limit, system can send high speed acquisition in time, and on-off model occurs for the startup of other devices.Be described as follows:
As shown in Figure 2 and Figure 3, the 500kV main transformer DC magnetic biasing online data described in utilization monitors the method for acquisition system, it is characterized in that carrying out according to the following steps:
(1). be separately installed with temperature sensor, vibration transducer, sensor noise with it at the device of main transformer, magnetic bias direct current acquisition terminal is arranged on the switch cubicle of transformer, be responsible for the collection of DC current signal, DC current signal, temperature signal, vibration signal and noise signal that temperature sensor, vibration transducer, sensor noise measure are converted to electric signal by main transformer collecting unit in real time, be converted to digital signal by signal conditioning circuit to preserve, reach background processing unit by optical fiber or cable, carry out analyzing and judging;
(2). the signal value that the DC current that main transformer collecting unit first judges to gather, temperature, vibration and sensor noise export whether be greater than the threshold values of setting separately or rate of change is out-of-limit separately time, when each collection value is greater than separately setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, now preserve the data of main transformer collecting unit buffer zone and carry out high speed acquisition; When each collection value of main transformer collecting unit is not greater than respective setting threshold values, then will carry out low speed collection, Real-Time Monitoring;
(3). when main transformer collecting unit judges that each collection value is greater than respective setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, output on-off model, this signal access fault wave recording device, in order to startup separator record ripple simultaneously;
(4). the signal value that each DC current that background processing unit reception main transformer collecting unit gathers, temperature, vibration and sensor noise export, and data are saved as the COMTRADE data of standard, send to transformer station's background monitoring center or dispatching terminal by the mode of networking, realize the seamless of data and share.
As Fig. 2, shown in Fig. 3, main transformer collecting unit first judges the DC current gathered, temperature, the signal value that vibration and sensor noise export whether be greater than the threshold values of separately setting or respective rate of change out-of-limit time, when each collection value is greater than separately setting threshold values or rate of change is constantly out-of-limit separately, show that the main transformer annex of this monitoring point has exception, now preserve the data of main transformer collecting unit buffer zone and carry out high speed acquisition, and startup separator wave recording device carries out Real-Time Monitoring, realize the monitoring of main transformer DC magnetic biasing data, and the ruuning situation abnormality alarming to main transformer, realize precognition and the analysis of main transformer DC magnetic biasing, for the fault pre-alarming of the main transformer in transformer station provides reference frame.
Claims (1)
1. 500kV main transformer DC magnetic biasing online data monitors an acquisition system, is made up of magnetic bias direct current monitoring terminal, temperature sensor, vibration transducer, sensor noise, main transformer collecting unit, background processing unit; It is characterized in that: temperature sensor, vibration transducer, sensor noise are arranged on it the device of transformer respectively, magnetic bias direct current acquisition terminal is arranged on the switch cubicle of transformer, temperature sensor, vibration transducer, sensor noise, magnetic bias direct current acquisition terminal are connected respectively to main transformer collecting unit, and main transformer collecting unit is connected with background processing unit by optical fiber or cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520677564.9U CN205003224U (en) | 2015-09-02 | 2015-09-02 | 500kV owner becomes dc magnetic biasing data and keeps watch on collection system on line |
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| CN201520677564.9U CN205003224U (en) | 2015-09-02 | 2015-09-02 | 500kV owner becomes dc magnetic biasing data and keeps watch on collection system on line |
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| CN205003224U true CN205003224U (en) | 2016-01-27 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291164A (en) * | 2016-07-22 | 2017-01-04 | 国家电网公司 | Noise measuring is utilized to judge the method and system of transformer DC magnetic bias state |
| CN106324406A (en) * | 2016-09-21 | 2017-01-11 | 许继集团有限公司 | Transformer direct-current magnetic bias fault diagnosis method and device |
| CN107561386A (en) * | 2017-08-29 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | The D.C. magnetic biasing data monitoring method and device of a kind of transformer |
| CN107561377A (en) * | 2016-06-30 | 2018-01-09 | 广州西门子变压器有限公司 | The detection method of D.C. magnetic biasing in transformer |
| CN108153195A (en) * | 2017-12-25 | 2018-06-12 | 杭州和利时自动化有限公司 | A kind of controller switching method, device, equipment and computer readable storage medium |
| CN109387744A (en) * | 2018-12-17 | 2019-02-26 | 国网山东省电力公司电力科学研究院 | Distribution line fault point positioning method and device based on singular value decomposition |
| CN112630581A (en) * | 2021-03-09 | 2021-04-09 | 广东电网有限责任公司佛山供电局 | Transformer neutral point direct current monitoring method, device, equipment and storage medium |
| CN115566639A (en) * | 2022-11-14 | 2023-01-03 | 国网湖北省电力有限公司电力科学研究院 | Multi-parameter control transformer neutral point current abnormity protection method |
-
2015
- 2015-09-02 CN CN201520677564.9U patent/CN205003224U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561377A (en) * | 2016-06-30 | 2018-01-09 | 广州西门子变压器有限公司 | The detection method of D.C. magnetic biasing in transformer |
| CN106291164A (en) * | 2016-07-22 | 2017-01-04 | 国家电网公司 | Noise measuring is utilized to judge the method and system of transformer DC magnetic bias state |
| CN106324406A (en) * | 2016-09-21 | 2017-01-11 | 许继集团有限公司 | Transformer direct-current magnetic bias fault diagnosis method and device |
| CN107561386A (en) * | 2017-08-29 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | The D.C. magnetic biasing data monitoring method and device of a kind of transformer |
| CN108153195A (en) * | 2017-12-25 | 2018-06-12 | 杭州和利时自动化有限公司 | A kind of controller switching method, device, equipment and computer readable storage medium |
| CN109387744A (en) * | 2018-12-17 | 2019-02-26 | 国网山东省电力公司电力科学研究院 | Distribution line fault point positioning method and device based on singular value decomposition |
| CN109387744B (en) * | 2018-12-17 | 2021-03-16 | 国网山东省电力公司电力科学研究院 | Distribution network line fault point positioning method and device based on singular value decomposition |
| CN112630581A (en) * | 2021-03-09 | 2021-04-09 | 广东电网有限责任公司佛山供电局 | Transformer neutral point direct current monitoring method, device, equipment and storage medium |
| CN112630581B (en) * | 2021-03-09 | 2021-06-08 | 广东电网有限责任公司佛山供电局 | Transformer neutral point direct current monitoring method, device, equipment and storage medium |
| CN115566639A (en) * | 2022-11-14 | 2023-01-03 | 国网湖北省电力有限公司电力科学研究院 | Multi-parameter control transformer neutral point current abnormity protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 562400 No.1 Beijing Road, Xingyi City, Qianxinan Buyi and Miao Autonomous Prefecture, Guizhou Province Patentee after: TIANSHENGQIAO HYDROPOWER GENERATION Co.,Ltd. Address before: 562400 No. 1, Beijing Road, Xingyi City, Guizhou Province, Qianxinan Buyei and Miao Autonomous Prefecture, Guizhou Province Patentee before: TIANSHENGQIAO POWER GENERATION GENERAL FACTORY OF PEAK LOAD AND FREQUENCY REGULATION COMPANY, CHINA SOUTHERN POWER GRID CO.,LTD. |
|
| CP03 | Change of name, title or address |