CN212301843U - Voltage transformer metering abnormity on-line monitoring system based on GPS - Google Patents
Voltage transformer metering abnormity on-line monitoring system based on GPS Download PDFInfo
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- CN212301843U CN212301843U CN202020590807.6U CN202020590807U CN212301843U CN 212301843 U CN212301843 U CN 212301843U CN 202020590807 U CN202020590807 U CN 202020590807U CN 212301843 U CN212301843 U CN 212301843U
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Abstract
The utility model provides a voltage transformer measurement anomaly on-line monitoring system based on GPS, includes a backstage analysis main website and two at least on-line monitoring appearance, on-line monitoring appearance includes protector, signal converter and data processing and sends the ware, the one end and the voltage transformer of protector carry out wired connection, and the other end of protector is connected with the one end that data processing sent the ware behind the signal converter, and data processing sends the other end of ware and backstage analysis main website and carries out wireless connection, and on-line monitoring appearance includes protector, signal converter, GPS to the time ware and data processing send the ware. The design not only can accurately judge the metering abnormity of the voltage transformer in operation, but also has stronger safety.
Description
Technical Field
The utility model relates to a voltage transformer's monitoring devices belongs to electric wire netting fortune dimension field, especially relates to a voltage transformer measures unusual on-line monitoring system based on GPS.
Background
In the last 80 th century, the united states began to carry out on-site offline error detection on a 500kV Capacitor Voltage Transformer (CVT), in the last 90 th century, the Wuhan has had a mechanism to carry out technical innovation on the basis, the original 1000pF standard is improved to 500pF, and on-site error offline detection on the 500kV CVT is carried out. The development of electrification and online detection on operating equipment becomes the development trend of modern power grids, and online monitoring on the metering performance of a voltage transformer becomes the current development direction. According to the technology, on one hand, error detection of the voltage transformer is not dependent on power failure and off-line, and can be carried out in a power failure state, on the other hand, on-line monitoring on the metering performance of the voltage transformer in operation can be carried out, abnormal points can be found in time, and measures can be taken immediately to ensure legal benefits of power consumers.
However, in the related technology and products for online monitoring of voltage transformer errors occurring at the present stage, uncertainty exists in the aspect of dividing boundaries of abnormal points, namely, the measurement abnormality of the voltage transformer in operation is not accurately judged, and subsequent operations are directly influenced.
The information disclosed in this background section is only for enhancement of understanding of the general background of the patent application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The utility model aims at overcoming the measurement of existence among the prior art to voltage transformer in service and judging unsafe defect and problem unusually, providing one kind and judging more accurate voltage transformer measurement anomaly on-line monitoring system based on GPS to voltage transformer's in service measurement anomaly.
In order to achieve the above purpose, the technical solution of the utility model is that: a voltage transformer metering abnormity online monitoring system based on a GPS comprises a background analysis main station and at least two online monitors, wherein one end of each online monitor is in wired connection with the voltage transformer, and the other end of each online monitor is in wireless connection with the background analysis main station;
the on-line monitoring instrument comprises a protector, a signal converter and a data processing transmitter, wherein one end of the protector is in wired connection with a voltage transformer, the other end of the protector is connected with one end of the data processing transmitter after passing through the signal converter, and the other end of the data processing transmitter is in wireless connection with a background analysis main station.
The arrangement structures of all online monitors which are wirelessly connected with the background analysis master station are parallel structures.
The on-line monitor also comprises a clock time synchronizer, and the signal converter is connected with one end of the data processing transmitter through the clock time synchronizer.
The clock time synchronizer is a GPS time synchronizer.
The protector comprises a voltage isolation and gradient unit, a discharge unit, a current limiting unit and a short circuit prevention unit, wherein one end of the voltage isolation and gradient unit is connected with a voltage transformer, and the other end of the voltage isolation and gradient unit is connected with the signal converter after passing through the discharge unit, the current limiting unit and the short circuit prevention unit in sequence.
The voltage isolation and gradient change unit comprises a primary winding and a secondary winding which are arranged in pairs, the primary winding is connected with the voltage transformer, and the secondary winding is connected with the signal converter after passing through the discharge unit, the current limiting unit and the short circuit prevention unit in sequence.
The discharge unit is a gas discharge tube.
The current limiting unit is a piezoresistor, a thermistor or a voltage stabilizing diode.
The short circuit prevention unit is a logic gate circuit.
The backstage analysis main website includes leading server and display screen, the one end of leading server is connected with the on-line monitoring appearance, and the other end of leading server is connected with the display screen, and on-line monitoring appearance, voltage transformer all set up in the transformer substation control room.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model relates to a GPS-based voltage transformer metering abnormity on-line monitoring system, which comprises a background analysis main station and at least two on-line monitors, wherein one end of the on-line monitor is in wired connection with a voltage transformer, the other end of the on-line monitor is in wireless connection with the background analysis main station, the on-line monitor comprises a protector, a signal converter and a data processing transmitter, when in use, the on-line monitor transmits the metering performance data of each voltage transformer monitored by the on-line monitor to the background analysis main station, and then the background analysis main station carries out data analysis and result display, the background analysis main station continuously fits the voltage transformer operating normal distribution curve between stations to obtain a central interval and a marginal interval so as to analyze the dispersion state of the voltage transformer in operation and serve as a data support for judging the metering abnormity of the operating voltage transformer, therefore, the abnormal points of the measurement can be found timely and accurately, and the accuracy is high. Therefore, the utility model discloses judge more accurately to voltage transformer's measurement anomaly in service.
2. The utility model relates to an among the unusual on-line monitoring system of voltage transformer measurement based on GPS, the on-line monitoring appearance includes the protector, signal converter and data processing send the ware, wherein, the protector includes voltage isolation transmutation unit, the unit discharges, the current-limiting unit with prevent the short circuit unit, this kind of multistage safeguard measure, not only consider the electrical protection of voltage transformer measurement winding self, still considered other windings of voltage transformer, for example, protection winding, measure the winding, surplus winding during operation, the electric influence protection to measurement winding that probably produces, ensure that voltage transformer measurement performance on-line monitoring appearance installs when the control room, can not produce the influence to the work running condition of former equipment, security when realizing voltage signal collection. Therefore, the utility model discloses a security is stronger.
3. The utility model relates to an among the unusual on-line monitoring system of voltage transformer measurement based on GPS, on-line monitoring appearance still includes clock to time ware, signal converter sends the ware through clock to time ware and data processing and is connected, and the clock is preferred to the time ware to be GPS to time ware, during the application, and this patent is based on GPS to time, and the precision can reach 0.1us, has realized the voltage transformer measurement performance comparison between the station, has enlarged the regular event collection of voltage transformer measurement performance in service, judges and the prediction provides technical support for improving voltage transformer measurement performance, and the whole degree of accuracy can reach 0.1 level. Therefore, the utility model discloses a precision is higher.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the on-line monitor of fig. 1.
Fig. 3 is a schematic view of the construction of the protector of fig. 2.
In the figure: the device comprises a voltage transformer 1, a background analysis main station 2, a front-end server 21, a display screen 22, an online monitor 3, a protector 4, a voltage isolation and gradient unit 41, a primary winding 411, a secondary winding 412, a discharge unit 42, a current limiting unit 43, an anti-short circuit unit 44, a signal converter 5, a data processing transmitter 6 and a clock time synchronizer 7.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1-3, an online monitoring system for abnormal metering of a voltage transformer based on a GPS comprises a background analysis master station 2 and at least two online monitors 3, wherein one end of each online monitor 3 is in wired connection with the voltage transformer 1, and the other end of each online monitor 3 is in wireless connection with the background analysis master station 2;
the on-line monitoring instrument 3 comprises a protector 4, a signal converter 5 and a data processing transmitter 6, one end of the protector 4 is in wired connection with the voltage transformer 1, the other end of the protector 4 is connected with one end of the data processing transmitter 6 after passing through the signal converter 5, and the other end of the data processing transmitter 6 is in wireless connection with the background analysis master station 2.
The arrangement structures of all the on-line monitors 3 wirelessly connected with the background analysis master station 2 are parallel structures.
The on-line monitoring instrument 3 further comprises a clock time synchronizer 7, and the signal converter 5 is connected with one end of the data processing transmitter 6 through the clock time synchronizer 7.
The clock time synchronizer 7 is a GPS time synchronizer.
The protector 4 comprises a voltage isolation and gradient unit 41, a discharge unit 42, a current limiting unit 43 and a short-circuit prevention unit 44, wherein one end of the voltage isolation and gradient unit 41 is connected with the voltage transformer 1, and the other end of the voltage isolation and gradient unit 41 is connected with the signal converter 5 after passing through the discharge unit 42, the current limiting unit 43 and the short-circuit prevention unit 44 in sequence.
The voltage isolation and gradient unit 41 comprises a primary winding 411 and a secondary winding 412 which are arranged in pairs, the primary winding 411 is connected with the voltage transformer 1, and the secondary winding 412 is connected with the signal converter 5 after passing through the discharging unit 42, the current limiting unit 43 and the short circuit prevention unit 44 in sequence.
The discharge unit 42 is a gas discharge tube.
The current limiting unit 43 is a voltage dependent resistor, a thermistor or a zener diode.
The short prevention unit 44 is a logic gate circuit.
Backstage analysis main website 2 includes leading server 21 and display screen 22, the one end of leading server 21 is connected with on-line monitoring appearance 3, and the other end of leading server 21 is connected with display screen 22, and on-line monitoring appearance 3, voltage transformer 1 all set up in the transformer substation control room.
Example 1:
referring to fig. 1-3, a voltage transformer measurement abnormity on-line monitoring system based on GPS comprises a background analysis master station 2 and at least two on-line monitors 3, each on-line monitor 3 comprises a protector 4, a signal converter 5 and a data processing transmitter 6, one end of the protector 4 is in wired connection with the voltage transformer 1, the other end of the protector 4 is connected with one end of the data processing transmitter 6 after passing through the signal converter 5, the other end of the data processing transmitter 6 is in wireless connection with the background analysis master station 2, the on-line monitor 3 further comprises a clock time synchronizer 7, the signal converter 5 is connected with one end of the data processing transmitter 6 through the clock time synchronizer 7, and the clock time synchronizer 7 is preferably a GPS time synchronizer.
When the device is applied, a proper transformer substation is selected, 2 or more groups of voltage transformers 1 which operate at the same voltage level exist in the transformer substation, the primary voltage of the voltage transformers 1 comes from the same source, an online monitor 3 is installed in a transformer substation control room, voltage signals of the online monitor 3 are collected into equipment, the voltage signals are obtained in parallel and can be operated in a charged mode, electricity is safely and reliably obtained after passing through a protector 4, the existing equipment cannot be influenced in operation, the device is started, secondary output signals of the voltage transformers 1 are collected in real time, GPS time synchronization is automatically started, collected data are labeled, a data processing transmitter 6 uploads the data to a background analysis main station 2, the background analysis main station 2 displays the error curve and normal distribution of the voltage transformers at the current station, the online monitor 3 collects the data once every 15 minutes and uploads the data, 96 groups of data are obtained in one day, on the basis, a long-term amplitude normal distribution graph of the operating voltage transformer can be drawn, metering abnormity of the voltage transformer 1 is analyzed according to the long-term amplitude normal distribution graph, in addition, data normal distribution description among stations can be carried out according to parameter setting among the stations, error normal distribution of the voltage transformer 1 in different substations can be fitted according to certain characteristic quantities, such as the same year, the same operation mode and the same quantity of production units, and whether the metering performance of each monitored voltage transformer is abnormal or not can be accurately judged according to multiple fitting results.
The system changes the current situation of real-time monitoring of the metering performance error of the current voltage transformer, the whole equipment can be operated in a live mode without power failure, the metering performance of the voltage transformer 1 can be monitored in real time, relevant workers can know the metering performance of the voltage transformer in a full-province operation in an all-around mode without going out of home, the positioning can be accurate, and the working efficiency of the relevant operation and maintenance workers is greatly improved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all equivalent modifications or changes made by those skilled in the art according to the present invention should be included in the protection scope of the claims.
Claims (10)
1. The utility model provides a voltage transformer measures unusual on-line monitoring system based on GPS which characterized in that: the monitoring system comprises a background analysis master station (2) and at least two online monitors (3), wherein one end of each online monitor (3) is in wired connection with a voltage transformer (1), and the other end of each online monitor (3) is in wireless connection with the background analysis master station (2);
the online monitor (3) comprises a protector (4), a signal converter (5) and a data processing transmitter (6), one end of the protector (4) is in wired connection with a voltage transformer (1), the other end of the protector (4) is connected with one end of the data processing transmitter (6) through the signal converter (5), and the other end of the data processing transmitter (6) is in wireless connection with a background analysis main station (2).
2. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 1, characterized in that: the arrangement structures of all the on-line monitors (3) which are wirelessly connected with the background analysis master station (2) are parallel structures.
3. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 1 or 2, characterized in that: the on-line monitoring instrument (3) further comprises a clock time synchronizer (7), and the signal converter (5) is connected with one end of the data processing transmitter (6) through the clock time synchronizer (7).
4. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 3, characterized in that: the clock time synchronizer (7) is a GPS time synchronizer.
5. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 1 or 2, characterized in that: the protector (4) comprises a voltage isolation and gradient unit (41), a discharge unit (42), a current limiting unit (43) and a short-circuit prevention unit (44), one end of the voltage isolation and gradient unit (41) is connected with the voltage transformer (1), and the other end of the voltage isolation and gradient unit (41) is connected with the signal converter (5) after passing through the discharge unit (42), the current limiting unit (43) and the short-circuit prevention unit (44) in sequence.
6. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 5, wherein: the voltage isolation and gradient change unit (41) comprises a primary winding (411) and a secondary winding (412) which are arranged in pairs, the primary winding (411) is connected with the voltage transformer (1), and the secondary winding (412) is connected with the signal converter (5) after passing through the discharge unit (42), the current limiting unit (43) and the short circuit prevention unit (44) in sequence.
7. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 5, wherein: the discharge unit (42) is a gas discharge tube.
8. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 5, wherein: the current limiting unit (43) is a piezoresistor, a thermistor or a voltage stabilizing diode.
9. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 5, wherein: the short circuit prevention unit (44) is a logic gate circuit.
10. The GPS-based voltage transformer metering anomaly online monitoring system according to claim 1 or 2, characterized in that: backstage analysis main website (2) are including leading server (21) and display screen (22), the one end of leading server (21) is connected with on-line monitoring appearance (3), and the other end of leading server (21) is connected with display screen (22), and on-line monitoring appearance (3), voltage transformer (1) all set up in the transformer substation control room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590807.6U CN212301843U (en) | 2020-04-20 | 2020-04-20 | Voltage transformer metering abnormity on-line monitoring system based on GPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590807.6U CN212301843U (en) | 2020-04-20 | 2020-04-20 | Voltage transformer metering abnormity on-line monitoring system based on GPS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301843U true CN212301843U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020590807.6U Expired - Fee Related CN212301843U (en) | 2020-04-20 | 2020-04-20 | Voltage transformer metering abnormity on-line monitoring system based on GPS |
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| Country | Link |
|---|---|
| CN (1) | CN212301843U (en) |
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2020
- 2020-04-20 CN CN202020590807.6U patent/CN212301843U/en not_active Expired - Fee Related
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