CN211014475U - Power grid phase judgment and check device - Google Patents
Power grid phase judgment and check device Download PDFInfo
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- CN211014475U CN211014475U CN201921941700.5U CN201921941700U CN211014475U CN 211014475 U CN211014475 U CN 211014475U CN 201921941700 U CN201921941700 U CN 201921941700U CN 211014475 U CN211014475 U CN 211014475U
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Abstract
The utility model relates to a power grid phase place judges and checks device, including two signal introduction modules, a signal switching module, a data measurement and collection module, a CPU module, a display screen, wherein two signal introduction modules are once only connected to two powers that need the nuclear phase respectively, select each power phase place signal by CPU module control signal switching module and measure, and the data of gathering are passed to the CPU module and are calculated, the analysis and judge and draw the result, show by the display screen at last. The utility model only needs once wiring, the CPU module controls phase selection and records corresponding measuring data; the microcomputer calculates internally, the calculated result is compared with the standard numerical value, the judgment is automatically carried out through the criterion, and finally, the corresponding result is displayed through a display screen, so that the operation is convenient, the working efficiency is improved, and the reliability is improved.
Description
Technical Field
The utility model relates to an electric power system field, more specifically relates to a device is judged and checked to electric wire netting phase place.
Background
The current adopted phase checking mode in the power grid is to use a universal meter or a conventional phase checking instrument to alternately check two phases one by one to form a phase difference voltage or phase sequence recording meter, and judge the same phase or different phase in a recording meter form. In actual operation, a universal meter and a conventional phase checking instrument are used for checking phases, wiring is needed for many times, phase difference voltage or phase sequence as many as 24 times needs to be recorded, and finally, the same phase and the different phase are judged manually, so that the operation time is long, the judgment is inconvenient, and the influence of human factors easily causes the error of a phase checking result.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art electric wire netting phase place judge and check operating time long, judge inconvenient defect, provide an electric wire netting phase place and judge and check the device.
The device comprises a signal introducing module, a data measuring and collecting module and a CPU module;
the signal introducing module is used for connecting a power supply needing nuclear phase, and is connected with the input end of the data measuring and collecting module; the data measuring and collecting module is connected with the voltage information of the power supply for measuring and collecting the required voltage information; the measured and collected voltage information is sent to the CPU module; the CPU module is used for judging and checking the voltage phases of different power supplies.
The CPU module calculates, analyzes and judges the acquired data to obtain a corresponding result, and finally the corresponding result is displayed by a display screen, and the microcomputer judges the result to avoid the error of a nuclear phase result caused by manual judgment, thereby improving the reliability.
Preferably, the signal introducing modules are provided with a plurality of signal introducing modules, and the signal introducing modules are respectively connected with the input ends of the data measuring and collecting modules.
Preferably, the number of the signal introducing modules is two, and the two signal introducing modules are respectively connected with the input end of the data measuring and collecting module.
The two signal introducing modules are respectively connected to two power supplies needing phase checking at one time, the CPU module controls the signal switching module to select each power supply phase signal for measurement, only one-time wiring is needed, operation steps are simplified, and working efficiency is improved.
Preferably, the device is also provided with a signal switching module, and the signal switching module is arranged between the signal introducing module and the data measuring and collecting module; each signal introducing module is respectively connected with the input end of the signal switching module, and the output end of the signal switching module is connected with the input end of the data measuring and collecting module; the signal switching module realizes the switching of different signal introducing modules.
Preferably, the signal switching module is further connected with the CPU module, and the CPU module realizes control of signal switching of the signal switching module.
Preferably, the device is further provided with a display screen for displaying the voltage phase result judged and checked by the CPU module.
Preferably, the display screen is a liquid crystal display screen.
Preferably, the types of the CPU are: STM 32.
Preferably, the signal switching module is a relay, and the model is MY 2N-GS.
Preferably, the model of the data measuring and collecting module is AD 4112.
The utility model discloses a two signal introduction modules, signal switching module, data measurement and collection module, CPU module, display screen, wherein two individual signal introduction modules are once only connected to two powers that need the nuclear phase respectively, select each power phase signal to measure by CPU module control signal switching module, and the data of gathering are passed to the CPU module and are calculated, the analysis and judge and reach corresponding result, show by the display screen at last.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the utility model only needs once wiring, the CPU module controls phase selection and records corresponding measuring data; the microcomputer calculates internally, the calculated result is compared with the standard numerical value, the judgment is automatically carried out through the criterion, and finally, the corresponding result is displayed through a display screen, so that the operation is convenient, the working efficiency is improved, and the reliability is improved.
Drawings
Fig. 1 is the utility model discloses the electric wire netting phase place is judged and is checked the device schematic diagram.
Fig. 2 and fig. 3 are schematic views of the application of the phase determining and checking device of the power grid of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
The utility model provides a power grid phase judging and checking device, as shown in figure 1, the device comprises a signal introducing module, a data measuring and collecting module and a CPU module;
the signal introducing module is used for connecting a power supply needing nuclear phase, and is connected with the input end of the data measuring and collecting module; the data measuring and collecting module is connected with the voltage information of the power supply for measuring and collecting the required voltage information; the measured and collected voltage information is sent to the CPU module; the CPU module is used for judging and checking the voltage phases of different power supplies.
The signal introducing modules are provided with a plurality of signal introducing modules, and the signal introducing modules are respectively connected with the input ends of the data measuring and collecting modules.
The two signal introducing modules are respectively connected with the input ends of the data measuring and collecting module.
The device is also provided with a signal switching module which is arranged between the signal introducing module and the data measuring and collecting module; each signal introducing module is respectively connected with the input end of the signal switching module, and the output end of the signal switching module is connected with the input end of the data measuring and collecting module; the signal switching module realizes the switching of different signal introducing modules.
The signal switching module is also connected with the CPU module, and the CPU module realizes the control of the signal switching module.
The device is also provided with a display screen which is used for displaying the voltage phase result judged and checked by the CPU module.
The display screen is a liquid crystal display screen.
The CPU model is as follows: STM 32.
The signal switching module is a relay, and the model is MY 2N-GS.
The data measurement and acquisition module is a data measurement and acquisition device, and the model is as follows: AD 4112.
Referring to fig. 2 and 3, in practical application, secondary phase checking is performed on a 10kV high-voltage switch cabinet, two different power supply modes of the switch cabinet are that a power supply 1G02 cabinet is used as a phase checking reference cabinet, secondary phase checking holes of the phase checking reference cabinet G02 are respectively marked as "a 1, B1, and C1" (only symbol marks are not actually different) in the sequence from left to right (facing to the operation surface of the 10kV high-voltage switch cabinet), secondary phase checking holes of a G03 cabinet where a ring network switch 603 is located are respectively marked as "a 2, B2, and C2" (only symbol marks are not actually different), and the working process of the power grid phase judging and checking device of the present invention in a specific secondary phase checking is as follows:
connecting G02 cabinet nuclear phase holes A1, B1 and C1 to a signal introducing module 1, connecting G03 cabinet secondary nuclear phase holes A2, B2 and C2 to a signal introducing module 2, firstly controlling a signal switching module by a CPU module to enable A1 phase signal data to be transmitted to a data measuring and collecting module for measuring and collecting data, and finally recording by the CPU module; the CPU module controls the signal switching module to switch B1 phase signal data to be transmitted to the data measuring and collecting module for measuring and data collecting, and the CPU module switches the remaining 4 phases one by one for measuring, collecting and recording after recording. After the 6 phase data are collected and recorded, the CPU module respectively carries out phase sequence self-checking on three-phase data of a G02 cabinet and a G03 cabinet by calculating phase angle difference and voltage amplitude of different phases (for example, the standard value of the phase angle difference of the G02 cabinet is 120 degrees for A1-B1, 240 degrees for A1-C1, and 120 degrees for B1-C1), when the phase angle difference or the voltage amplitude of the G02 cabinet and the G03 cabinet are both in the standard range value, the self-checking is passed, and the next phase checking operation is automatically carried out; when one or more of the out-of-phase angle difference or the voltage amplitude of the G02 cabinet and the G03 cabinet is not within the standard range value, the self-test is not passed, the nuclear phase operation is suspended, and the words "XXX cabinet self-test fails" and related data are displayed on the display screen.
After the self-test is passed, the secondary phase checking is firstly carried out on the G02 cabinet and the G03 cabinet in different power supply modes (which are normal operation modes), as shown in FIG. 2: the switch 601, the switch 602, the switch 604 and the switch 605 are in the closing position, the switch 603 is in the opening position, the G02 cabinet is powered by a power supply 1, and the G03 cabinet is powered by a power supply 2. The nuclear phase method is that the three phases A1, B1 and C1 of the reference cabinet G02 are compared with the three phases A2, B2 and C2 of the G03 cabinet respectively, after the comparison is finished, the nuclear phase result is displayed by a display screen, and the nuclear phase operation is suspended. The nuclear phase results are shown in table 1 (for illustration only):
TABLE 1G02 and G03 phase checking result table powered by different power supplies
| A1-A2 | In phase | B1-A2 | Out of phase | C1-A2 | Out of phase |
| A1-B2 | Out of phase | B1-B2 | In phase | C1-B2 | Out of phase |
| A1-C2 | Out of phase | B1-C2 | Out of phase | C1-C2 | In phase |
As shown in fig. 3: the G02 cabinet and the G03 cabinet are powered by the same power supply mode, the switch 601, the switch 602, the switch 603 and the switch 605 are in the closing position, the switch 604 is in the opening position, and the G02 cabinet and the G03 cabinet are both powered by the power supply 1. After switching operation according to fig. 3, manually press the utility model discloses the secondary nuclear phase under G02 cabinet and G03 cabinet by the same mains operated mode is carried on to "next step" button on the panel, and the nuclear phase method is the same with above-mentioned G02 cabinet and G03 cabinet by the secondary nuclear phase method under the different mains operated modes, and the nuclear phase result is shown by the display screen, and the nuclear phase result is shown as table 2 (for the example only):
TABLE 2G 02 and G03 cases are phase checking result table supplied by the same power supply
According to the results of two nuclear phases, the display screen displays the nuclear phase conclusion. As the results of the nuclear phases in table 1 and table 2 are in complete agreement, it is shown that: the phase sequence and phase electrical corresponding relation of the power supply 1 and the power supply 2 are consistent; if the two phase checking results are inconsistent, the following results are shown: the phase sequence and phase electrical correspondence of the power supply 1 and the power supply 2 are inconsistent. And finishing the secondary nuclear phase operation.
The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A power grid phase judging and checking device is characterized by comprising a signal introducing module, a data measuring and collecting module and a CPU module;
the signal introducing module is used for connecting a power supply needing nuclear phase, and is connected with the input end of the data measuring and collecting module; the data measuring and collecting module is connected with the voltage information of the power supply for measuring and collecting the required voltage information; the measured and collected voltage information is sent to the CPU module; the CPU module is used for judging and checking the voltage phases of different power supplies.
2. The power grid phase judging and checking device according to claim 1, wherein a plurality of signal introducing modules are provided, and the plurality of signal introducing modules are respectively connected with the input end of the data measuring and collecting module.
3. The power grid phase judging and checking device according to claim 2, wherein two signal introducing modules are provided, and the two signal introducing modules are respectively connected with the input end of the data measuring and collecting module.
4. The power grid phase judging and checking device according to claim 3, wherein the device is further provided with a signal switching module, and the signal switching module is arranged between the signal introducing module and the data measuring and collecting module; each signal introducing module is respectively connected with the input end of the signal switching module, and the output end of the signal switching module is connected with the input end of the data measuring and collecting module; the signal switching module realizes the switching of different signal introducing modules.
5. The power grid phase judging and checking device according to claim 4, wherein the signal switching module is further connected with the CPU module, and the CPU module realizes control over signal switching of the signal switching module.
6. The grid phase judging and checking device according to claim 5, wherein the device is further provided with a display screen for displaying the result of the voltage phase judged and checked by the CPU module.
7. The grid phase judging and collating device of claim 6 wherein the display screen is a liquid crystal display.
8. The grid phase judging and checking device according to claim 7, wherein the type of the CPU is: STM 32.
9. The grid phase judging and collating device of claim 8, wherein the signal switching module is a relay of type MY 2N-GS.
10. A grid phase determining and collating device according to any one of claims 1 to 9, wherein the data measuring and collecting module is of the type AD 4112.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941700.5U CN211014475U (en) | 2019-11-11 | 2019-11-11 | Power grid phase judgment and check device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941700.5U CN211014475U (en) | 2019-11-11 | 2019-11-11 | Power grid phase judgment and check device |
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| Publication Number | Publication Date |
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| CN211014475U true CN211014475U (en) | 2020-07-14 |
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| CN201921941700.5U Active CN211014475U (en) | 2019-11-11 | 2019-11-11 | Power grid phase judgment and check device |
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