CN217060481U - Multichannel intelligence electric quantity changer calibration equipment - Google Patents
Multichannel intelligence electric quantity changer calibration equipment Download PDFInfo
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- CN217060481U CN217060481U CN202220726047.6U CN202220726047U CN217060481U CN 217060481 U CN217060481 U CN 217060481U CN 202220726047 U CN202220726047 U CN 202220726047U CN 217060481 U CN217060481 U CN 217060481U
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Abstract
The utility model discloses a multichannel intelligent electric quantity transmitter checking device, which comprises an intelligent electric quantity transmitter checking device, an intelligent electric quantity transmitter and a switching device; the current output end of the intelligent electric quantity transmitter calibration device is connected with the current input ends of a current channel and a power channel in the intelligent electric quantity transmitter; the voltage output end of the intelligent electric quantity transmitter calibration device is connected with the voltage input ends of a voltage channel, a power channel and a frequency channel in the intelligent electric quantity transmitter; the output end of a voltage channel, the output end of a current channel, the output end of a power channel and the output end of a frequency channel in the intelligent electric quantity transmitter are respectively connected with a switching device, and the output end of the switching device is connected with the input end of an intelligent electric quantity transmitter calibration device.
Description
Technical Field
The utility model belongs to the technical field of the electric power test, a multichannel intelligence electrical quantity changer calibration equipment is related to.
Background
Most thermal power plants adopt multichannel intelligence electric quantity transmitter to participating in the important electric quantity transmitter of the active power generation group of unit DCS and DEH regulation at present, and intelligence electric quantity transmitter stability is high, and the interference killing feature is strong, not only can effectively solve current or voltage secondary circuit and appear unusual leading to output distortion to also save the generation simultaneously and become group transmitter screen installation space, has reduced the secondary circuit wiring. However, the existing standard specification and technical method are used for calibrating the traditional electric quantity transmitter, and no clear calibration method is provided for the multi-channel intelligent electric quantity transmitter, and only the traditional electric quantity transmitter calibration method is used for conducting wiring and disconnecting on each channel, so that the workload is large, time and labor are wasted, the performance index of the intelligent electric quantity transmitter is not easy to judge and analyze comprehensively, and certain hidden danger is brought to the safe operation of a power plant. Therefore, the method for checking the multi-channel intelligent electric quantity transmitter is found, the checking efficiency of the intelligent electric quantity transmitter is improved, and the method has important significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a multichannel intelligence electric quantity changer calibration equipment, the device can improve intelligence electric quantity changer's calibration efficiency.
In order to achieve the purpose, the multi-channel intelligent electric quantity transmitter calibration device comprises an intelligent electric quantity transmitter calibration device, an intelligent electric quantity transmitter and a switching device;
the current output end of the intelligent electric quantity transmitter checking device is connected with the current input ends of a current channel and a power channel in the intelligent electric quantity transmitter; the voltage output end of the intelligent electric quantity transmitter calibration device is connected with the voltage input ends of a voltage channel, a power channel and a frequency channel in the intelligent electric quantity transmitter; the output end of a voltage channel, the output end of a current channel, the output end of a power channel and the output end of a frequency channel in the intelligent electric quantity transmitter are respectively connected with a switching device, and the output end of the switching device is connected with the input end of an intelligent electric quantity transmitter calibration device.
The voltage input ends of the voltage channel, the power channel and the frequency channel are connected in parallel through test lines.
The current channel is connected with the current input end of the power channel in series through a test line.
The switch of the switching device is switched to the voltage channel to check the magnitude of the voltage channel.
The switch of the switching device is switched to the current channel to verify the magnitude of the current channel.
And switching the switch of the switching device to the power channel to check the magnitude of the power channel.
The switch of the switching device is switched to the frequency channel to check the magnitude of the frequency channel.
The utility model discloses following beneficial effect has:
when the multi-channel intelligent electric quantity transmitter calibration device is operated in detail, the current output end of the intelligent electric quantity transmitter calibration device is connected with the current input ends of the current channel and the power channel in the intelligent electric quantity transmitter; the voltage output end of the intelligent electric quantity transmitter calibration device is connected with the voltage input ends of a voltage channel, a power channel and a frequency channel in the intelligent electric quantity transmitter; the output end of the voltage channel, the output end of the current channel, the output end of the power channel and the output end of the frequency channel in the intelligent electric quantity transmitter are respectively connected with the switching device, and all the channels are respectively switched through the switching device, so that the intelligent electric quantity transmitter calibration device is calibrated, the calibration efficiency is high, and the workload of calibration/calibration personnel is greatly saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is an intelligent electric quantity transmitter checking device, 2 is an intelligent electric quantity transmitter, 2-1 is a voltage channel, 2-2 is a current channel, 2-3 is a power channel, 2-4 is a frequency channel, and 3 is a switching device.
Detailed Description
In order to make the technical solutions of the present invention better understood, the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the multi-channel intelligent electric quantity transmitter calibration device of the present invention includes an intelligent electric quantity transmitter calibration device 1, an intelligent electric quantity transmitter 2 and a switching device 3;
the current output end of the intelligent electric quantity transmitter checking device 1 is connected with a current channel 2-2 and a power channel 2-3 in the intelligent electric quantity transmitter 2; the voltage output end of the intelligent electric quantity transmitter checking device 1 is connected with the voltage input ends of a voltage channel 2-1, a power channel 2-3 and a frequency channel 2-4 in the intelligent electric quantity transmitter 2; the output end of a voltage channel 2-1, the output end of a current channel 2-2, the output end of a power channel 2-3 and the output end of a frequency channel 2-4 in the intelligent electric quantity transmitter 2 are respectively connected with a switching device 3, and the output end of the switching device 3 is connected with the input end of an intelligent electric quantity transmitter checking device 1.
Analog quantity signals accessed by a voltage channel 2-1, a current channel 2-2, a power channel 2-3 and a frequency channel 2-4 in the intelligent electric quantity transmitter 2 are classified, voltage input ends of the voltage channel 2-1, the power channel 2-3 and the frequency channel 2-4 in the intelligent electric quantity transmitter 2 using the same group of voltage quantity are connected in parallel through a test line, and the current channel 2-2 using the same group of current quantity is connected in series with a current input end of the power channel 2-3 through the test line.
Inputting test parameters corresponding to each channel item by item, and setting a verification scheme of each channel in the intelligent electric quantity transmitter 2;
preprocessing the intelligent electric quantity transmitter 2 to ensure that each influence quantity determines a verification method (a standard device method) and a verification item of the intelligent electric quantity transmitter 2 under a reference condition;
when the intelligent electric quantity transmitter 2 is checked, the developed checking items comprise appearance checking, insulation resistance tests, basic errors, output ripple content and response time, and for the power transmitter, the variable caused by the influence of unbalanced current on the power transmitter is required to be carried out;
when the intelligent electric quantity transmitter 2 is checked, a test point is generally selected according to an equal division principle, N quantity values with equal intervals between a measured higher nominal value and a measured lower nominal value are taken as the tested point to be checked, the voltage quantity is generally selected from 100% Ub, 80% Ub, 60% Ub, 40% Ub, 20% Ub and 0% Ub and the like, the current quantity is selected from 100% Ib, 80% Ib, 60% Ib, 40% Ib, 20% Ib and 0% Ib and the like, the active/passive quantity is selected from 100% Ib, 80% Ib, 60% Ib, 40% Ib, 20% Ib and 0% Ib and the like under rated voltage, and the frequency quantity is selected from 57Hz, 49.5Hz, 50Hz, 50.5Hz and 52Hz and the like under rated voltage.
The switching device 3 is connected with the voltage channel 2-1, the first channel magnitude verification is carried out, after the first channel magnitude verification is completed, the switch of the switching device 3 is switched to the current channel 2-2, the second channel magnitude verification is carried out, after the second channel magnitude verification is completed, the switch of the switching device 3 is switched to the power channel 2-3, the third channel magnitude verification is carried out, after the third channel magnitude verification is completed, the switch of the switching device 3 is switched to the frequency channel 2-4, the fourth channel magnitude verification is carried out, and the fourth channel magnitude verification is carried out sequentially until the magnitude verification of each channel is completed.
And calculating basic errors of the intelligent electric quantity transmitter 2, wherein the basic errors of the check points of each channel of the intelligent electric quantity transmitter 2 meet the calibration requirement, the quantity value of the intelligent electric quantity transmitter 2 is qualified, and when the basic error of a certain check point of any channel can not meet the calibration requirement, the channel quantity value of the intelligent electric quantity transmitter 2 is calibrated and then is continuously calibrated until the channel quantity value is qualified.
And recording the magnitude verification data of each channel in the intelligent electric quantity transmitter 2, processing the data and issuing a verification report.
Claims (7)
1. A multichannel intelligent electric quantity transmitter calibration device is characterized by comprising an intelligent electric quantity transmitter calibration device (1), an intelligent electric quantity transmitter (2) and a switching device (3);
the current output end of the intelligent electric quantity transmitter checking device (1) is connected with the current input ends of a current channel (2-2) and a power channel (2-3) in the intelligent electric quantity transmitter (2); the voltage output end of the intelligent electric quantity transmitter calibration device (1) is connected with the voltage input ends of a voltage channel (2-1), a power channel (2-3) and a frequency channel (2-4) in the intelligent electric quantity transmitter (2); the output end of a voltage channel (2-1), the output end of a current channel (2-2), the output end of a power channel (2-3) and the output end of a frequency channel (2-4) in the intelligent electric quantity transmitter (2) are respectively connected with a switching device (3), and the output end of the switching device (3) is connected with the input end of the intelligent electric quantity transmitter checking device (1).
2. The multichannel intelligent power transmitter verification device as claimed in claim 1, wherein voltage input ends of the voltage channel (2-1), the power channel (2-3) and the frequency channel (2-4) are connected in parallel through a test line.
3. The verification device of the multi-channel intelligent electric quantity transmitter as claimed in claim 1, wherein the current channel (2-2) is connected in series with the current input end of the power channel (2-3) through a test line.
4. The verification device for the multi-channel intelligent electric quantity transmitter as claimed in claim 1, wherein the switch of the switching device (3) is switched to the voltage channel (2-1) to perform the magnitude verification of the voltage channel (2-1).
5. The verification device for the multi-channel intelligent electric quantity transmitter as claimed in claim 1, wherein the switch of the switching device (3) is switched to the current channel (2-2) to perform the magnitude verification of the current channel (2-2).
6. The multichannel intelligent electric quantity transmitter verifying device as claimed in claim 1, wherein the switch device (3) is switched to the power channels (2-3) to perform the magnitude verification of the power channels (2-3).
7. The multichannel intelligent power transmitter verification device as claimed in claim 1, wherein the switch device (3) switches to the frequency channels (2-4) to perform the magnitude verification of the frequency channels (2-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220726047.6U CN217060481U (en) | 2022-03-30 | 2022-03-30 | Multichannel intelligence electric quantity changer calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220726047.6U CN217060481U (en) | 2022-03-30 | 2022-03-30 | Multichannel intelligence electric quantity changer calibration equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217060481U true CN217060481U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220726047.6U Active CN217060481U (en) | 2022-03-30 | 2022-03-30 | Multichannel intelligence electric quantity changer calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217060481U (en) |
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2022
- 2022-03-30 CN CN202220726047.6U patent/CN217060481U/en active Active
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