CN209356569U - Long-range secondary voltage drop test macro - Google Patents
Long-range secondary voltage drop test macro Download PDFInfo
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- CN209356569U CN209356569U CN201822027751.9U CN201822027751U CN209356569U CN 209356569 U CN209356569 U CN 209356569U CN 201822027751 U CN201822027751 U CN 201822027751U CN 209356569 U CN209356569 U CN 209356569U
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Abstract
The utility model provides a kind of long-range secondary voltage drop test macro, including isolating transformer, voltage sensor, electric current turn potential circuit, filter circuit, data sampling circuit, dsp processor and display；The output end of isolating transformer and the input terminal of voltage sensor connect, the output end of voltage sensor is connect with the input terminal that electric current turns potential circuit, the input terminal of output end and filter circuit that electric current turns potential circuit connects, the output end of filter circuit and the input terminal of data sampling circuit connect, the output end of data sampling circuit and the input terminal of dsp processor connect, and the output end of dsp processor and the input terminal of display connect.The long-range secondary voltage drop test macro of the utility model can carry out real-time measurement to substation PT secondary pressure drop, monitor substation PT secondary pressure drop situation on-line, the cycle in time for avoiding the occurrence of no supervision greatly improves efficiency and data management level to PT secondary voltage drop data monitoring.
Description
Technical field
The utility model relates to a kind of electric energy metered systems, and in particular to a kind of long-range secondary voltage drop test macro.
Background technique
Traditional PT secondary voltage drop test method, staff need to carry PT secondary pressure drop tester, power supply line, wiring
P-wire is respectively connected to PT secondary terminals row and master control room electric energy meter foot voltage end is compared in real time by the heavy instruments such as volume
To test.Using traditional secondary voltage drop test method, p-wire is up to more than ten meters to 20 meters, is not only easy to secondary voltage drop
Test result have an impact, and be possible to fall off because of test clamp in operation process and accidentally touch in terminal box other electrification positions
Or metal shell, cause transformer substation switch to malfunction, there is huge security risks.Meanwhile traditional test method also without
Method monitors secondary voltage drop data in real time, needs to expend the substation field work that a large amount of manpower and material resources carry out high risk
Make, it is difficult to meet instantly power department to the lean management of safety in production and the demand of electric energy data lean management.
Utility model content
To solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of long-range secondary voltage drop test macro, can
Real-time measurement is carried out to substation PT secondary pressure drop, substation PT secondary pressure drop situation is monitored on-line, avoids the occurrence of no supervision
Cycle in time, greatly improve the efficiency and data management level to PT secondary voltage drop data monitoring.
To achieve the above object, the technical solution of the utility model is: a kind of long-range secondary voltage drop test macro, including every
Turn potential circuit, filter circuit, data sampling circuit, dsp processor and display from transformer, voltage sensor, electric current, every
The input terminal of output end and voltage sensor from transformer connects, and the output end and electric current of voltage sensor turn potential circuit
The input terminal of input terminal connection, output end and filter circuit that electric current turns potential circuit connects, the output end and number of filter circuit
It is connected according to the input terminal of sample circuit, the output end of data sampling circuit and the input terminal of dsp processor connect, dsp processor
Output end and display input terminal connect.
The dsp processor uses TMS320L28335.
The display uses TFT LCD.
The utility model has the beneficial effect that the long-range secondary voltage drop test macro of the utility model can be to substation
PT secondary voltage drop carries out real-time measurement, monitors substation PT secondary pressure drop situation on-line, avoids the occurrence of the cycle in time of no supervision,
Greatly improve the efficiency and data management level to PT secondary voltage drop data monitoring.Staff is without reaching scene
Secondary voltage drop test job is completed, existing huge security risk during work on the spot has been evaded from source, it will be complicated numerous
The work on the spot of weight is transformed into the metering automation system monitoring operation that one can simply be easily accomplished, improve working efficiency and
Reduce entreprise cost.
Detailed description of the invention
Fig. 1 is the functional block diagram of the long-range secondary voltage drop test macro of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
The long-range secondary voltage drop test macro of the utility model include isolating transformer 1., voltage sensor, electric current turn electricity
Volt circuit, filter circuit, data sampling circuit, dsp processor and display, the output end and voltage sensor of isolating transformer 1.
The input terminal of device connects, and the output end of voltage sensor is connect with the input terminal that electric current turns potential circuit, and electric current turns potential circuit
Output end and the input terminal of filter circuit connect, the input terminal of the output end of filter circuit and data sampling circuit connects, number
It is connected according to the output end of sample circuit and the input terminal of dsp processor, the output end of dsp processor and the input terminal of display connect
It connects.The dsp processor uses TMS320L28335.The display uses TFT LCD.
The working principle of the long-range secondary voltage drop test macro of the utility model are as follows: the head end voltage of PT secondary side passes through remote
Journey is transmitted to A, B, C, O voltage input end of long-range secondary voltage drop test macro, is then 1. transferred to electricity by isolating transformer
Pressure sensor input terminal, isolating transformer play the role of electrical isolation, and voltage signal is converted to current signal by voltage sensor,
Turn potential circuit by electric current and be converted into corresponding voltage signal, then after being filtered out interference signal by filter circuit, voltage
Signal is sent to data sampling circuit, data sampling circuit by voltage signal be converted to digital signal be sent to dsp processor into
Row processing, the side PT head end voltage is shown over the display.Real-time measurement is carried out to substation PT secondary pressure drop to realize,
Line monitoring substation PT secondary voltage drop situation, avoids the occurrence of the cycle in time of no supervision, greatly improves to PT secondary voltage drop
The efficiency and data management level of data monitoring.
Claims (3)
1. a kind of long-range secondary voltage drop test macro, it is characterised in that: turn electricity including isolating transformer, voltage sensor, electric current
Volt circuit, filter circuit, data sampling circuit, dsp processor and display；The output end and voltage sensor of isolating transformer
Input terminal connection, the output end of voltage sensor connect with the input terminal that electric current turns potential circuit, and electric current turns potential circuit
The connection of the input terminal of output end and filter circuit, the output end of filter circuit and the input terminal of data sampling circuit connect, data
The output end of sample circuit and the input terminal of dsp processor connect, and the output end of dsp processor and the input terminal of display connect
It connects.
2. long-range secondary voltage drop test macro according to claim 1, it is characterised in that: the dsp processor uses
TMS320L28335。
3. long-range secondary voltage drop test macro according to claim 1, it is characterised in that: the display uses TFT liquid
Crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822027751.9U CN209356569U (en) | 2018-12-05 | 2018-12-05 | Long-range secondary voltage drop test macro |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822027751.9U CN209356569U (en) | 2018-12-05 | 2018-12-05 | Long-range secondary voltage drop test macro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209356569U true CN209356569U (en) | 2019-09-06 |
Family
ID=67784344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822027751.9U Active CN209356569U (en) | 2018-12-05 | 2018-12-05 | Long-range secondary voltage drop test macro |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209356569U (en) |
-
2018
- 2018-12-05 CN CN201822027751.9U patent/CN209356569U/en active Active
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