CN109283407B - Voltage loop monitoring system based on total station data contrastive analysis - Google Patents
Voltage loop monitoring system based on total station data contrastive analysis Download PDFInfo
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Abstract
The invention discloses a voltage loop monitoring system based on total station data contrastive analysis, which comprises a voltage sampling device, a voltage monitoring device and a total station voltage monitoring device; the voltage sampling device is used for collecting voltage signals of the whole station and transmitting the collected voltage signals to the voltage monitoring device, the voltage monitoring device processes and analyzes the voltage signals to judge whether the voltage is abnormal or not, when the voltage is judged to be abnormal, the voltage monitoring device stores the voltage signal data and transmits the voltage signal data to the whole station voltage monitoring device, and the whole station voltage monitoring device finds abnormal data from the voltage data transmitted by the voltage monitoring device and analyzes the abnormal data to obtain a fault point. According to the invention, by utilizing a three-level processing mode, voltage data preprocessing, a voltage data comparison and analysis module of the same type and a voltage data comparison and analysis module of different types, the processing efficiency is effectively improved, and the system requirement is reduced.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a voltage loop monitoring system based on total station data contrastive analysis.
Background
The existing secondary circuit monitoring method of the voltage transformer has basic monitoring of secondary equipment such as protection, measurement and control and the like, but the monitoring precision is low, and only the fault of voltage circuit open circuit can be monitored. The TV line break blocking method for line protection such as the nanrui relay protection is as follows:
1. the sum of the three-phase voltage vectors is more than 8V, the protection is not started, and a TV disconnection abnormal signal is sent after 1.25 seconds of delay;
2. when the sum of the three-phase voltage vectors is less than 8V, but the positive sequence voltage is less than 33.3V, if a bus TV is adopted, 1.25 seconds of delay is carried out to send a TV disconnection abnormal signal; if the line TV is adopted, when any phase current element is operated or the TWJ is not operated, the abnormal signal of TV disconnection is sent out after the time delay of 1.25 seconds. The apparatus determines whether to use bus TV or line TV by tuning the control word.
However, the above method has the following disadvantages:
1. the interference of the voltage loop can not be effectively monitored. When the voltage loop receives interference, the interference is caused to devices such as protection, measurement and control, PMU (phasor measurement unit), fault recording and the like, but the existing device cannot give an alarm to the devices.
2. The failure of secondary circuit insulation low grade can not be judged: when the voltage secondary circuit is insulated and reduced, the voltage is reduced, and meanwhile, certain damage is caused to the voltage transformer, but the existing device cannot give an alarm for the type of defects.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a voltage loop monitoring system based on total station data comparative analysis so as to improve the monitoring accuracy.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the voltage loop monitoring system based on the total station data contrastive analysis comprises a voltage sampling device, a voltage monitoring device and a total station voltage monitoring device; wherein the content of the first and second substances,
the voltage sampling device is used for collecting voltage signals of the whole station and transmitting the collected voltage signals to the voltage monitoring device, the voltage monitoring device processes and analyzes the voltage signals to judge whether the voltage is abnormal, when the voltage is judged to be abnormal, the voltage monitoring device stores the voltage signal data and transmits the voltage signal data to the whole station voltage monitoring device, and the whole station voltage monitoring device finds abnormal data from the voltage data transmitted by the voltage monitoring device and analyzes the abnormal data to obtain a fault point.
The voltage monitoring device comprises a preposed data processing module, a voltage data preprocessing module and a voltage data comparison and analysis module; the preposed data processing module is used for converting the voltage signals transmitted by the voltage acquisition device into voltage data with a uniform format; the voltage data preprocessing module is used for judging and analyzing the voltage state of the voltage data transmitted by the prepositive data processing module to obtain data under different voltage states; the voltage data comparison and analysis module is used for carrying out normalization calculation on the data in different voltage states transmitted by the voltage preprocessing module and comparing and analyzing whether abnormal data exist.
The voltage data preprocessing module comprises a voltage state judging unit, a voltage amplitude calculating unit, a voltage angle calculating unit, a fault moment waveform recording unit and a voltage information classifying unit; the voltage state judging unit is used for judging the voltage data transmitted by the preposed data processing module to judge whether the voltage state of the voltage data belongs to the operation time voltage, the shutdown time voltage or the fault time voltage, when the voltage state judging unit judges that the voltage state of the voltage data is the operation time voltage or the shutdown time voltage, the voltage amplitude calculating unit and the voltage angle calculating unit respectively calculate the average voltage amplitude and the average voltage angle of the operation time voltage or the shutdown time voltage within a certain period of time, and when the voltage state judging unit judges that the voltage state of the voltage data is the fault time voltage, the fault time waveform recording unit records the voltage waveform of the fault time voltage; the voltage information classification unit is used for marking and classifying the voltage data judged by the voltage state judgment unit.
The voltage data comparison and analysis module comprises a same-type device voltage data comparison and analysis unit and a non-same-type device voltage data comparison and analysis unit, when the voltage state judgment unit judges that the voltage data transmitted by the preposed data processing module is the voltage at the running moment, the same-type device voltage data comparison and analysis unit performs the voltage amplitude value normalization calculation and the voltage angle normalization calculation on the voltage data, performs the voltage amplitude value abnormity alarm calculation after completing the voltage amplitude value normalization calculation to judge whether the voltage amplitude value is abnormal, when the voltage amplitude value is judged to be abnormal, sends all the voltage data at the same interval to the non-same-type device voltage comparison and analysis unit, performs the voltage angle abnormity alarm calculation after completing the voltage angle normalization calculation to judge whether the voltage angle is abnormal, when the voltage angle is judged to be abnormal, all the voltage data of the same interval are sent to the voltage comparison and analysis units of different types of equipment.
The voltage acquisition device comprises a measurement and control voltage acquisition device, a protection voltage monitoring device, a recording voltage monitoring device and a stable voltage monitoring device
Compared with the prior art, the invention has the beneficial effects that:
1. and performing transverse and longitudinal comparison analysis by using the voltage data of the whole station to find out a fault point.
2. And the voltage data preprocessing module is utilized to reduce the channel bandwidth requirement and reduce the network real-time requirement.
3. And the voltage data preprocessing module is utilized to reduce the requirement of the processor.
4. And carrying out omnibearing comparative analysis by using the amplitude and the angle of the voltage to find out a fault point.
5. By utilizing a three-level processing mode, voltage data preprocessing, the same type of voltage data comparison and analysis module and different types of voltage data comparison and analysis modules, the processing efficiency is effectively improved, and the system requirements are reduced.
Drawings
Fig. 1 is a schematic composition diagram of a voltage loop monitoring system based on total station data comparative analysis according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the voltage monitoring device;
FIG. 3 is a schematic diagram of the voltage data preprocessing module;
FIG. 4 is a schematic diagram of the operation of a voltage data comparison and analysis unit of the same type of equipment;
fig. 5 is a working schematic diagram of a total station voltage monitoring device;
FIG. 6 is a schematic diagram of fault analysis;
in the figure: 1. a voltage sampling device; 2. a voltage monitoring device; 3. a total station voltage monitoring device; 21. a preposed data processing module; 22. a voltage data preprocessing module; 23. a voltage data comparison and analysis module; 221. a voltage state judgment unit; 222. a voltage amplitude calculation unit; 223. a voltage angle calculation unit; 224. a fault moment waveform recording unit; 225. a voltage information classification unit; 231. the voltage data comparison and analysis unit of the same type of equipment; 232. and the voltage data comparison and analysis units of different types of equipment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Example (b):
referring to fig. 1, the voltage loop monitoring system based on total station data comparison and analysis provided in this embodiment includes a voltage sampling device 1, a voltage monitoring device 2, and a total station voltage monitoring device 3.
The voltage sampling device 1 is used for collecting voltage signals of the whole station and transmitting the collected voltage signals to the voltage monitoring device 2, the voltage monitoring device 2 processes and analyzes the voltage signals to judge whether the voltage is abnormal, when the voltage is judged to be abnormal, the voltage monitoring device 2 stores the voltage signal data and transmits the voltage signal data to the whole station voltage monitoring device 3, and the whole station voltage monitoring device 3 finds abnormal data from the voltage data transmitted by the voltage monitoring device 2 and analyzes the abnormal data to obtain a fault point.
Specifically, in this embodiment, the voltage sampling device 1 includes a measurement and control voltage collecting device, a protection voltage monitoring device, a recording voltage monitoring device, and a regulated voltage monitoring device, but this embodiment only lists the above several important voltage sampling devices, but as long as the voltage sampling device is provided, and a device capable of outputting a voltage sampling signal can be used as the voltage sampling device.
Specifically, as shown in fig. 2, the voltage monitoring device 2 includes a pre-data processing module 21, a voltage data preprocessing module 22, and a voltage data comparison and analysis module 23; the preposed data processing module 21 is used for converting the voltage signals transmitted by the voltage acquisition device 1 into voltage data with a uniform format; the voltage data preprocessing module 22 is configured to perform voltage state judgment and analysis on the voltage data transmitted by the pre-data processing module 21 to obtain data in different voltage states; the voltage data comparison and analysis module 23 is used for performing normalization calculation on the data in different voltage states transmitted by the voltage preprocessing module 22, and comparing and analyzing whether abnormal data exists.
The voltage data preprocessing module 22, as shown in fig. 3, includes a voltage state determining unit 221, a voltage amplitude calculating unit 222, a voltage angle calculating unit 223, a fault time waveform recording unit 224, and a voltage information classifying unit 225. The voltage state determination unit 221 is configured to determine the voltage data transmitted by the pre-data processing module 21, so as to determine which state of the voltage data belongs to the operation time voltage, the shutdown time voltage, and the fault time voltage, specifically, the operation time voltage determination method is as follows: when the three-phase voltage UA \ UB \ UC is greater than 80% of the standard voltage UN and the duration time exceeds 10s (other values can be set), judging that the voltage is a normal voltage; the voltage judgment method at the shutdown time is as follows: when UA \ UB \ UC are all less than 50% UN and the duration time exceeds 10s (other values can be set), judging that the voltage is the shutdown voltage; and when the two are not satisfied, judging the voltage at the fault moment.
When the voltage state determination unit 221 determines that the voltage state of the voltage data is the operation time voltage or the shutdown time voltage, the voltage amplitude calculation unit 222 calculates a voltage average value of the voltage data within a certain period of time (e.g., 10s), and outputs the average value as a subsequent determination calculation. By the method, the real-time requirement of the network can be effectively reduced, and the requirement of the network broadband can be reduced. If the requirement is not high, only the voltage amplitude at a certain moment can be recorded as a calculated value.
And when the voltage state judging unit 221 judges that the voltage state of the voltage data is the voltage at the operation time or the voltage at the shutdown time, the voltage data simultaneously enters the voltage angle calculating unit 223, because there is no synchronous logic among the measurement and control voltage collecting device, the protection voltage monitoring device, the wave recording voltage monitoring device, the stable voltage monitoring device and the like, and in order to reduce the bandwidth requirement of communication, the angle of the same device and the same interval phase a current can be adopted as a reference to calculate the angle of UA \ UB \ UC \ UN, thereby avoiding the synchronous requirement among different types of secondary equipment. Meanwhile, in order to avoid false alarm of 180-degree voltage angle difference caused by reverse connection of the current loop, the current is set to be manually set reversely. When the angle between the voltage and the current is 10s continuously (other values can be set), the difference is not larger than a set value (such as 10 degrees), and the value is output. This avoids frequent communication requirements. If the requirement is not high, only the voltage angle at a certain moment can be recorded as a calculated value
When the voltage state determination unit 221 determines that the voltage state of the voltage data is the operation time voltage or the shutdown time voltage, the voltage state determination unit enters the fault time waveform recording unit 224 at the same time, and stores the voltage waveform at the fault time according to the standard format. When the voltage jump value exceeds a set value, the moment is marked as 0 moment. The fault waveform comparison analysis of a plurality of devices is facilitated. And marking useful parameters such as the maximum voltage amplitude, the average voltage amplitude, the fault 0 moment, the voltage angle, the fault duration and the like at the fault moment. When the requirement is not high, the data of the voltage at the fault moment can not be recorded.
The voltage information classifying unit 225 is configured to label and classify the voltage data determined by the voltage status determining unit, and specifically label the voltage data according to six groups of data, including the voltage status determining data, the voltage class, the name of the interval, the winding (first, second, third, etc.) of the voltage transformer, the secondary circuit model (MCB1, MCB2, to, etc.), and the name of the secondary device.
Specifically, the voltage data comparison and analysis module 23 includes a voltage data comparison and analysis unit 231 of the same type of device and a voltage data comparison and analysis unit 232 of a different type of device, and when the voltage state judgment unit 221 judges that the voltage data transmitted by the pre-data processing module 21 is the voltage at the operation time, as shown in fig. 4, the voltage data comparison and analysis unit 231 of the same type of device performs the voltage amplitude normalization calculation and the voltage angle normalization calculation on the voltage data.
Wherein the voltage amplitude normalization is calculated as: if the voltage of 500kV voltage class and the voltage of 220kV voltage class are converted according to the actual transformation ratio of the transformer substation, normalization calculation is carried out, the normalization calculation is generally carried out according to the highest class, the normalization calculation can also be carried out according to the low voltage class, and then the voltage amplitude abnormity warning calculation of the whole station is carried out;
the voltage amplitude anomaly alarm is calculated as:
UAX ═ (| U1A | + | U2A | + ]. + | UNA |)/n; the average voltage of phase A when the system operates normally;
UBX ═ U1B | + | U2B | +. + -. + | urb |)/n; b phase average voltage during normal system operation;
UCX (| U1C | + | U2C | +. + -. + | UNC |)/n; c-phase average voltage during normal system operation;
ax ═ (| U1A | - | UAX |)/| UAX |; the a-phase voltage error of element 1;
bx (| U1B | - | UBX |)/| UBX |; b-phase voltage error of element 1;
cx ═ (| U1C | - | UCX |)/| UCX |; c-phase voltage error of element 1;
and when ax, bx and cx are smaller than the set values, such as 10%, considering that the voltage is normal, otherwise, considering that the voltage is abnormal. When the voltage is determined to be abnormal, all the voltage data at the same interval are sent to the voltage comparison and analysis unit 232 of the different types of equipment for comparison and analysis, and abnormal point data is obtained.
The voltage angle normalization is calculated as: for example, the voltages of 500kV and 220kV are converted according to the connection group of the transformer of the substation, and normalized, for example, the phase difference between the primary side and the secondary side of the transformer is 30 degrees in the YN, D11 transformer. The primary and secondary side voltages need to be scaled. The normalization is generally performed according to the highest level, but may be performed according to the low voltage level. And then carrying out voltage amplitude abnormity warning calculation of the whole station.
ay＝∠U1A-U2A；
by＝∠U1B-U2B；
cy＝∠U1C-U2C；
When ay, by and cy are smaller than the set values, for example, 10 degrees, the voltage angle is considered to be normal, otherwise, the voltage angle is considered to be abnormal. When the voltage angle is determined to be abnormal, all the voltage data at the same interval are sent to the voltage comparison and analysis unit 232 of the different types of equipment for comparison and analysis, and abnormal point data is obtained.
In order to simplify the calculation and to speed up the analysis of the fault time, the voltage data preprocessing module 22 already extracts the fault characteristic voltage parameters. Therefore, the same type of voltage fault characteristic parameters are compared and analyzed, when the difference of the characteristic parameters of the two devices exceeds a set value, an alarm is given, and the two devices enter the voltage comparison and analysis unit 232 of different types of equipment to perform comparison and analysis so as to obtain abnormal point data.
As shown in fig. 5, the total-station voltage monitoring device 3 performs network information interaction with the voltage sampling signal data processed by the voltage monitoring device respectively: 1. when the voltage monitoring device judges that the voltage is abnormal, the abnormal alarm node is closed, all voltage data are packaged, GPS time is used as reference, a file is stored every minute, and the file is transmitted to the total station voltage monitoring device. 2. When the voltage monitoring device receives the synchronous sampling requirement of the total-station voltage monitoring device, the voltage monitoring device is started to sample, GPS time is used as a reference, a file is stored every minute, and the file is transmitted to the total-station voltage monitoring device. 3. When the voltage monitoring device of the whole station acquires the alarm signal of a certain module, starting a sampling synchronization step, and storing a file every minute by taking GPS time as reference to the voltage information acquired by all the modular voltage monitoring devices of the whole station.
As shown in fig. 6:
1. when the voltage data of the fault intervals of the measurement and control voltage acquisition device, the protection voltage monitoring device, the wave recording voltage monitoring device and the safety and stability voltage monitoring device are marked with abnormal marks in the voltage data comparison and analysis unit of the same type of the second ring section, and numerical errors of all abnormal data are equal at the moment, the voltage transformer is considered to be abnormal.
2. And when only part of the voltage data is marked with an abnormal mark, performing fault comparison analysis. And when the abnormal voltage data are all equal in winding type marks and are different from the winding type marks of all the non-abnormal voltage data, the marked winding of the voltage transformer is considered to be abnormal.
3. And when the winding type and the MCB data of the abnormal voltage data are equal and are different from the marks of the MCB data of all the non-abnormal voltage data, the MCB of the voltage transformer is considered to be abnormal.
4. When only one voltage data is abnormal, the voltage loop or the device voltage module of a certain secondary device is judged to be abnormal.
5. When the voltage values are not the same, the voltage values are judged to be abnormal, all the voltages are listed in a list form, and the operation and maintenance personnel can conveniently further judge the voltage values.
Therefore, compared with the prior art, the invention has the following technical advantages:
1. and performing transverse and longitudinal comparison analysis by using the voltage data of the whole station to find out a fault point.
2. And the voltage data preprocessing module is utilized to reduce the channel bandwidth requirement and reduce the network real-time requirement.
3. And the voltage data preprocessing module is utilized to reduce the requirement of the processor.
4. And carrying out omnibearing comparative analysis by using the amplitude and the angle of the voltage to find out a fault point.
5. By utilizing a three-level processing mode, voltage data preprocessing, the same type of voltage data comparison and analysis module and different types of voltage data comparison and analysis modules, the processing efficiency is effectively improved, and the system requirements are reduced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (4)
1. The voltage loop monitoring system based on the total station data contrastive analysis is characterized by comprising a voltage sampling device, a voltage monitoring device and a total station voltage monitoring device; wherein the content of the first and second substances,
the voltage sampling device is used for collecting voltage signals of the whole station and transmitting the collected voltage signals to the voltage monitoring device, the voltage monitoring device processes and analyzes the voltage signals to judge whether the voltage is abnormal or not, when the voltage is judged to be abnormal, the voltage monitoring device stores the voltage signal data and transmits the voltage signal data to the voltage monitoring device of the whole station, the voltage monitoring device of the whole station finds abnormal data from the voltage data transmitted by the voltage monitoring device and analyzes the abnormal data to obtain a fault point, and the voltage monitoring device of the whole station is also used for controlling the voltage signal sampling of the voltage sampling device;
the voltage monitoring device comprises a preposed data processing module, a voltage data preprocessing module and a voltage data comparison and analysis module; the preposed data processing module is used for converting the voltage signals transmitted by the voltage acquisition device into voltage data with a uniform format; the voltage data preprocessing module is used for judging and analyzing the voltage state of the voltage data transmitted by the prepositive data processing module to obtain data under different voltage states; the voltage data comparison and analysis module is used for carrying out normalization calculation on the data in different voltage states transmitted by the voltage preprocessing module and comparing and analyzing whether abnormal data exist or not;
the voltage data preprocessing module comprises a voltage state judging unit, a voltage amplitude calculating unit, a voltage angle calculating unit, a fault moment waveform recording unit and a voltage information classifying unit; the voltage state judging unit is used for judging the voltage data transmitted by the preposed data processing module to judge which state the voltage state of the voltage data belongs to from the operation time voltage, the shutdown time voltage and the fault time voltage, and when the voltage state judging unit judges that the voltage state of the voltage data is the operation time voltage or the shutdown time voltage, the voltage amplitude calculating unit and the voltage angle calculating unit respectively calculate the average voltage amplitude and the voltage angle of the operation time voltage or the shutdown time voltage within a certain period of time; when the voltage state judging unit judges that the voltage state of the voltage data is the voltage at the fault moment, the waveform recording unit at the fault moment records the voltage waveform of the voltage at the fault moment; the voltage information classification unit is used for marking and classifying the voltage data judged by the voltage state judgment unit.
2. The total station data comparative analysis-based voltage loop monitoring system of claim 1, it is characterized in that the voltage data comparison and analysis module comprises a same type device voltage data comparison and analysis unit and a different type device voltage data comparison and analysis unit, when the voltage state judging unit judges that the voltage data transmitted by the preposed data processing module is the voltage at the running time, the voltage data comparison and analysis unit of the same type of equipment performs voltage amplitude normalization calculation and voltage angle normalization calculation on the voltage data, performs voltage amplitude abnormity warning calculation after the voltage amplitude normalization calculation is completed so as to judge whether the voltage amplitude is abnormal or not, when the voltage amplitude is judged to be abnormal, sending all voltage data of the same interval to a voltage comparison and analysis unit of equipment of different types to obtain abnormal data points; and after the voltage angle normalization calculation is finished, performing voltage angle abnormity warning calculation to judge whether the voltage angle is abnormal, and when the voltage angle is judged to be abnormal, sending all voltage data at the same interval to a voltage comparison and analysis unit of equipment of different types to obtain abnormal data points.
3. The total station data comparative analysis-based voltage loop monitoring system of claim 2, wherein said voltage magnitude anomaly alarm is calculated as:
UAX ═ (| U1A | + | U2A | + ]. + | UNA |)/n; the average voltage of phase A when the system operates normally;
UBX ═ U1B | + | U2B | +. + -. + | urb |)/n; b phase average voltage during normal system operation;
UCX (| U1C | + | U2C | +. + -. + | UNC |)/n; c-phase average voltage during normal system operation;
ax ═ (| U1A | - | UAX |)/| UAX |; the a-phase voltage error of element 1;
bx (| U1B | - | UBX |)/| UBX |; b-phase voltage error of element 1;
cx ═ (| U1C | - | UCX |)/| UCX |; c-phase voltage error of element 1;
when ax, bx and cx are smaller than set values, considering the voltage to be normal, otherwise, considering the voltage to be abnormal; and when the voltage is judged to be abnormal, sending all voltage data at the same interval to a voltage comparison and analysis unit of equipment of different types for comparison and analysis to obtain abnormal point data.
4. The total station data contrastive analysis-based voltage loop monitoring system of any one of claims 1-3, where the voltage acquisition devices include a measurement and control voltage acquisition device, a protection voltage monitoring device, a wave recording voltage monitoring device, and a regulated voltage monitoring device.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254846A (en) * | 1998-11-24 | 2000-05-31 | 湖南省电力试验研究所 | Automatic tracking, monitoring and compensating device for secondary line voltage drop of voltage mutual inductor |
| CN201434887Y (en) * | 2009-05-27 | 2010-03-31 | 安徽省电力公司阜阳供电公司 | On-line monitoring unit for secondary loop voltage drop |
| KR20120133922A (en) * | 2011-06-01 | 2012-12-11 | 연세대학교 산학협력단 | Smart plug and power quality monitoring system thereof |
| CN103399253A (en) * | 2013-08-20 | 2013-11-20 | 国家电网公司 | Device for detecting circuit opening of secondary circuit of current transformer |
| CN103941079A (en) * | 2014-04-16 | 2014-07-23 | 华北电力大学 | On-line monitoring and fault diagnosis system for power distribution network PT |
-
2018
- 2018-08-13 CN CN201810917955.1A patent/CN109283407B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254846A (en) * | 1998-11-24 | 2000-05-31 | 湖南省电力试验研究所 | Automatic tracking, monitoring and compensating device for secondary line voltage drop of voltage mutual inductor |
| CN201434887Y (en) * | 2009-05-27 | 2010-03-31 | 安徽省电力公司阜阳供电公司 | On-line monitoring unit for secondary loop voltage drop |
| KR20120133922A (en) * | 2011-06-01 | 2012-12-11 | 연세대학교 산학협력단 | Smart plug and power quality monitoring system thereof |
| CN103399253A (en) * | 2013-08-20 | 2013-11-20 | 国家电网公司 | Device for detecting circuit opening of secondary circuit of current transformer |
| CN103941079A (en) * | 2014-04-16 | 2014-07-23 | 华北电力大学 | On-line monitoring and fault diagnosis system for power distribution network PT |
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