CN103499763A - Real-time on-line remote monitoring transformer iron core current device - Google Patents
Real-time on-line remote monitoring transformer iron core current device Download PDFInfo
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- CN103499763A CN103499763A CN201310468077.7A CN201310468077A CN103499763A CN 103499763 A CN103499763 A CN 103499763A CN 201310468077 A CN201310468077 A CN 201310468077A CN 103499763 A CN103499763 A CN 103499763A
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Abstract
The invention provides a real-time on-line remote monitoring transformer iron core current device, which comprises a leakage current sensor (1) used for collecting a current analog signal and an alarm signal of a transformer iron core; the current analog signal is converted into a digital signal via a data collection cabinet (2); and the digital signal and the alarm signal are uploaded to a monitoring and managing device (4) via serial equipment (3). According to the device, the operation state of an electric reactor iron core is comprehensively and visually monitored and is intelligently analyzed in real time to provide more precise, timely and integrated information; the working efficiency is improved, and the labor intensity of workers is lightened; meanwhile, effective technical support is provided for the condition overhaul of the transformer; the grid security maintenance level and the disaster prevention and reduction capability can be improved.
Description
Technical field
The present invention relates to a kind of monitoring transformer current device, particularly relate to a kind of real-time online remote monitoring transformer core current device.
background technology
Power transformer is most important electrical equipment in electric system, once in service, breaks down, and will cause serious consequence to electric system.The transformer core one point earth of normal operation, if while ground connection more than 2 or 2 is arranged, will form current return between iron core and the earth, and maximum current can reach tens amperes, will cause iron core overheated, even burns.
At present judge whether transformer core exists multipoint earthing, monitoring mode in the past is used hand-held instrument regularly to be monitored and the electric approach of record, clamp on amperemeter periodic monitoring iron core grounding current, measured the gas chromatography of iron core insulation against ground electric-resistivity method and monitoring transformer insulation oil characteristic gas by the tester, but these methods all can not be found the multipoint earthing of iron core fault in time, once break down, can not take in time corresponding measure.
Summary of the invention
The invention provides a kind of comprehensive, directly perceived, real-time online remote monitoring transformer core current device.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of real-time online remote monitoring transformer core current device, comprise Leakage Current sensor, data acquisition cabinet, serial equipment and monitoring management apparatus;
Described Leakage Current sensor, be located on transformer, for gathering transformer core current simulating signal and alerting signal;
Described data acquisition cabinet, be transferred to digital signal by current analog signal, and digital signal and alerting signal are uploaded to monitoring management apparatus by serial equipment;
Described serial equipment, carry out data acquisition to many number of units according to gathering cabinet;
Described monitoring management apparatus, the data that serial equipment is transmitted are processed, and show in real time current analog signal and alerting signal, provide the inquiry of historical data and historical data report to print simultaneously.
Further, the output terminal of described Leakage Current sensor is connected with the input end of data acquisition cabinet, the output terminal of data acquisition cabinet is connected with the input end of serial equipment, and the output terminal of serial equipment is connected with the input end of monitoring management apparatus by internal lan or wide area network.
Further, described serial equipment comprise to the time processor, central processing unit, benefit trick according to device and headend;
To the time processor, carry out verification to adopting complement certificate and time, guarantee that data are consistent all the time with the time;
Mend trick according to device, the data of losing for network outage, after network recovery, can carry out the filling mining of data;
Central processing unit and headend, the current data that collection is come sends to monitoring management apparatus by internal lan or wide area network by data.
Further, built-in at least one RS-484 mouth of described serial equipment.
Further, described data acquisition cabinet mainly is comprised of signal amplifier, digital to analog converter, central processing unit, audible-visual annunciator, 485 interfaces and digital indicator; The signal amplifier input end is connected with Leakage Current sensor output terminal, the signal amplifier output terminal is connected with the digital to analog converter input end, the digital to analog converter output terminal is connected with the input end of central processing unit, the output terminal of central processing unit is connected with audible-visual annunciator, digital indicator and the input end of 485 interfaces, and the output terminal of 485 interfaces is connected with the input end of serial equipment.
From above technical scheme, the present invention has following beneficial effect:
The data acquisition unit of this real-time online remote monitoring transformer core current device can be real-time the leakage current parameter of the electrical equipments such as collection transformer, and can be sent to serial equipment by RS-485, then be sent to the personnel that the electric power LAN (Local Area Network) is provided with associated rights and checked.This device helps checking experiment work area to transformer, and the core of reactor operation conditions is carried out comprehensive, directly perceived, real-time monitoring and intellectual analysis, provide more accurately, more in time, more complete information; Increase work efficiency, alleviate intensity of workers; Can provide for the repair based on condition of component of transformer effective technical support simultaneously; Can improve the electricity net safety stable level and the ability of preventing and reducing natural disasters; The life cycle management of reinforcement equipment monitors and management, enhances productivity, for building strong intelligent grid be widely used market and prospect.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is a kind of real-time online remote monitoring of the present invention transformer core current device;
The structured flowchart that Fig. 2 is data acquisition cabinet in Fig. 1;
Embodiment
Fig. 1 shows the structured flowchart of a kind of real-time online remote monitoring of the present invention transformer core current device, as shown in the figure, real-time online remote monitoring transformer core current device comprises Leakage Current sensor 1, data acquisition cabinet 2, serial equipment 3 and monitoring management apparatus 4.
Leakage Current sensor 1 adopts the principle of zero flux compensation, by German professional production small-signal sensor producer, is made, and its precision can reach microampere order, and antijamming capability is extremely strong.Its Main Function is the monitoring of playing leakage current between iron core and folder; Main transformer core current simulating signal and the alerting signal of gathering.Adopt the fixed form that clamps bronze medal not destroy any structure of original system, the employing of metal die has greatly reduced the impact of external magnetic field on the leakage current collection precision.
Shown in Fig. 2, data acquisition cabinet 2 is mainly by signal amplifier 21, digital to analog converter 22, central processing unit 23, audible-visual annunciator 24, 485 interfaces 25 and digital indicator 26 form, signal amplifier 21 input ends are connected with Leakage Current sensor 1 output terminal, signal amplifier 21 output terminals are connected with digital to analog converter 22 input ends, digital to analog converter 22 output terminals are connected with the input end of central processing unit 23, the output terminal of central processing unit 23 and audible-visual annunciator device 24, digital indicator 26 is connected with the input end of 485 interfaces 25, the output terminal of 485 interfaces 25 is connected with the input end of serial equipment 3.Data acquisition cabinet 2 is mainly that the current analog signal that leakage current sensor 1 is collected is converted into digital signal and shows on described digital indicator 26, carry out on-the-spot sound and light alarm for surpassing the threshold current arranged, and data are sent on described serial equipment 3, also alerting signal is uploaded on serial equipment 3 simultaneously.Digital indicator 26 adopts the good stability of Japanese imported with original packaging, and the digital instrument that precision is high, be analog-signal transitions digital signal on the spot, transmit data by shielded cable, antijamming capability is strong, is not subject to the restriction of transmission range, the longlyest can reach 2km, cover whole transformer station.Digital indicator 26 can show the leakage current parameter of the electrical equipments such as transformer in real time, and has sound alarm function.
Serial equipment 3 built-in monitoring systems, described monitoring system comprise to the time processor, central processing unit, headend, benefit trick according to device.Serial port setting 3, data acquisition cabinet 2 by 485 connecting lines and each transformer terminal carries out data communication, and, by the collecting on serial equipment 3 of the real time data synchronization in a plurality of data acquisition cabinets 2, serial equipment 3 adopts TCP/UDP socket mode of operations.The built-in a plurality of RS-485 mouths of serial equipment 3; Built-in monitoring system can be carried out data acquisition according to gathering cabinet 2 to many number of units, has from linkage function, even if system cut-off, when power up, serial equipment 3 also can be linked in LAN (Local Area Network) automatically.Have the filling mining function, the data of losing for network outage, after network recovery, can carry out the filling mining of data, and by the time processor, filling mining data and time are carried out to verification, guarantee that data are consistent all the time with the time.Have central authorities and process and the data retransmission function, the current data that collection is come sends to monitoring management apparatus 4 by internal lan or wide area network by data.System communication mode and networking mode are flexible, can communicate and networking by GSM/GPRS/RS485/ optical fiber etc., adapt to the demand of different enterprises and farthest reducing the construction costs.
The above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. a real-time online remote monitoring transformer core current device, is characterized in that: comprise Leakage Current sensor (1), data acquisition cabinet (2), serial equipment (3) and monitoring management apparatus (4);
Described Leakage Current sensor (1), be located on transformer, for gathering transformer core current simulating signal and alerting signal;
Described data acquisition cabinet (2), be transferred to digital signal by current analog signal, and digital signal and alerting signal are uploaded to monitoring management apparatus (4) by serial equipment (3);
Described serial equipment (3), carry out data acquisition to many number of units according to gathering cabinet (2);
Described monitoring management apparatus (4), the data that serial equipment (3) is transmitted are processed, and show in real time current analog signal and alerting signal, provide the inquiry of historical data and historical data report to print simultaneously.
2. monitoring transformer core current device according to claim 1, it is characterized in that: the output terminal of described Leakage Current sensor (1) is connected with the input end of data acquisition cabinet (2), the output terminal of data acquisition cabinet (2) is connected with the input end of serial equipment (3), and the output terminal of serial equipment (3) is connected with the input end of monitoring management apparatus (4) by internal lan or wide area network.
3. monitoring transformer core current device according to claim 1 is characterized in that: described serial equipment (3) comprise to the time processor, central processing unit, benefit trick according to device and headend;
To the time processor, carry out verification to adopting complement certificate and time, guarantee that data are consistent all the time with the time;
Mend trick according to device, the data of losing for network outage, after network recovery, can carry out the filling mining of data;
Central processing unit and headend, the current data that collection is come sends to monitoring management apparatus (4) by internal lan or wide area network by data.
4. monitoring transformer core current device according to claim 1, is characterized in that: built-in at least one the RS-484 mouth of described serial equipment (3).
5. monitoring transformer core current device according to claim 1, it is characterized in that: described data acquisition cabinet (2) mainly is comprised of signal amplifier (21), digital to analog converter (22), central processing unit (23), audible-visual annunciator (24), 485 interfaces (25) and digital indicator (26); Signal amplifier (21) input end is connected with Leakage Current sensor (1) output terminal, signal amplifier (21) output terminal is connected with digital to analog converter (22) input end, digital to analog converter (22) output terminal is connected with the input end of central processing unit (23), the output terminal of central processing unit (23) is connected with audible-visual annunciator (24), digital indicator (26) and the input end of 485 interfaces (25), and the output terminal of 485 interfaces (25) is connected with the input end of serial equipment (3).
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| CN201310468077.7A CN103499763A (en) | 2013-10-10 | 2013-10-10 | Real-time on-line remote monitoring transformer iron core current device |
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| CN201310468077.7A CN103499763A (en) | 2013-10-10 | 2013-10-10 | Real-time on-line remote monitoring transformer iron core current device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931770A (en) * | 2015-05-18 | 2015-09-23 | 国家电网公司 | Internet of things technology-based transformer iron core grounding current detection method |
| CN107449954A (en) * | 2016-06-01 | 2017-12-08 | 李朝晖 | Power transformer iron core earth current holography on-Line Monitor Device and method |
| CN107703406A (en) * | 2017-09-28 | 2018-02-16 | 浙江群力电气有限公司 | A kind of power transformer iron core grounding monitor method and system |
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| JPH0355812A (en) * | 1989-07-25 | 1991-03-11 | Toshiba Corp | Detecting method of dc biassed magnetization of transformer core |
| CN101387676A (en) * | 2008-07-17 | 2009-03-18 | 东北电力大学 | Large-sized transformer core and on-line monitoring and protecting system for insulaiton fault of clamps |
| CN101738997A (en) * | 2009-10-30 | 2010-06-16 | 深圳市科陆电子科技股份有限公司 | Multithread electric negative control system and control method |
| CN102436249A (en) * | 2012-01-19 | 2012-05-02 | 四川谊田集群科技有限公司 | Intelligent electric quantity management and control system and method |
| CN102998521A (en) * | 2012-10-11 | 2013-03-27 | 苏州爱知电机有限公司 | Ground-current remote monitor for transformer cores |
| CN202870160U (en) * | 2012-10-11 | 2013-04-10 | 苏州爱知电机有限公司 | Transformer iron core grounding current remote monitoring device |
| CN203490320U (en) * | 2013-10-10 | 2014-03-19 | 国家电网公司 | Device for remotely monitoring transformer iron core current online in real time |
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2013
- 2013-10-10 CN CN201310468077.7A patent/CN103499763A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0355812A (en) * | 1989-07-25 | 1991-03-11 | Toshiba Corp | Detecting method of dc biassed magnetization of transformer core |
| CN101387676A (en) * | 2008-07-17 | 2009-03-18 | 东北电力大学 | Large-sized transformer core and on-line monitoring and protecting system for insulaiton fault of clamps |
| CN101738997A (en) * | 2009-10-30 | 2010-06-16 | 深圳市科陆电子科技股份有限公司 | Multithread electric negative control system and control method |
| CN102436249A (en) * | 2012-01-19 | 2012-05-02 | 四川谊田集群科技有限公司 | Intelligent electric quantity management and control system and method |
| CN102998521A (en) * | 2012-10-11 | 2013-03-27 | 苏州爱知电机有限公司 | Ground-current remote monitor for transformer cores |
| CN202870160U (en) * | 2012-10-11 | 2013-04-10 | 苏州爱知电机有限公司 | Transformer iron core grounding current remote monitoring device |
| CN203490320U (en) * | 2013-10-10 | 2014-03-19 | 国家电网公司 | Device for remotely monitoring transformer iron core current online in real time |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931770A (en) * | 2015-05-18 | 2015-09-23 | 国家电网公司 | Internet of things technology-based transformer iron core grounding current detection method |
| CN107449954A (en) * | 2016-06-01 | 2017-12-08 | 李朝晖 | Power transformer iron core earth current holography on-Line Monitor Device and method |
| CN107703406A (en) * | 2017-09-28 | 2018-02-16 | 浙江群力电气有限公司 | A kind of power transformer iron core grounding monitor method and system |
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Application publication date: 20140108 |