CN215116587U - Measuring device - Google Patents
Measuring device Download PDFInfo
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- CN215116587U CN215116587U CN202121531828.1U CN202121531828U CN215116587U CN 215116587 U CN215116587 U CN 215116587U CN 202121531828 U CN202121531828 U CN 202121531828U CN 215116587 U CN215116587 U CN 215116587U
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Abstract
The utility model discloses a measuring device, which is arranged at one end of an electric overhead line and comprises a grounding switching module, which is used for realizing grounding or suspension of the electric overhead line under the control of a main control module; the circuit sampling module is used for collecting the circuit parameters of the overhead power circuit based on the control of the main control module after the grounding switching module acts; and the main control module is used for controlling the action of the grounding switching module and the line sampling module based on the received control instruction, wherein the control instruction is transmitted to the main control module by the man-machine interaction module, and the man-machine interaction module is arranged at the other end of the overhead power line far away from the measuring device. According to the three-phase line grounding device, manual wiring is replaced by the grounding switching device, grounding or suspension of the three-phase line is achieved through an automatic control method, and the three-phase line grounding device is convenient and fast to use and high in safety.
Description
Technical Field
The embodiment of the utility model provides a relate to overhead line test technical field, especially relate to a measuring device.
Background
Before the electric overhead line is put into operation or in a maintenance state, the electric parameters of the overhead line need to be measured. The traditional measurement method is to input a certain direct current or alternating current source (determined according to test items) at the head end of the overhead line, measure voltage and current signals of the line by a quadrupole method, and then obtain required parameters by processing of digital signals DFT (Discrete Fourier Transform) and digital filtering.
However, in the conventional measurement process, the test cable needs to be manually grounded or suspended at the end of the line, and for different phase line tests and different test items of the same-phase line, the end of the line needs to be manually grounded or suspended for repeated wire connection changing. Frequent wire replacement operation of the terminal test personnel not only increases workload and consumes time and labor, but also increases personal safety risk of the test personnel due to operation on the tower pole.
SUMMERY OF THE UTILITY MODEL
The utility model provides a measuring device has solved among the prior art electric power overhead line and need artifical manual carry out the three-phase line ground connection or unsettled consuming time power that leads to when carrying out the line parameter measurement, and there is the technical problem of risk in the personal safety of the staff of wiring in-process.
The embodiment of the utility model provides a measuring device, set up in one end of overhead line of electric power, the measuring device includes ground connection switching module, circuit sampling module and host system;
the grounding switching module is electrically connected with the main control module and is used for realizing grounding or suspension of the overhead power line under the control of the main control module;
the line sampling module is electrically connected with the main control module, and after the grounding switching module acts, the line sampling module collects line parameters of the overhead power line based on the control of the main control module;
the main control module controls the grounding switching module and the line sampling module to act based on a received control instruction, wherein the control instruction is transmitted to the main control module by the man-machine interaction module, and the man-machine interaction module is arranged at the other end of the overhead power line far away from the measuring device.
Further, the grounding switching module comprises a vacuum relay, and a coil of the vacuum relay is electrically connected with the main control module.
Further, the ground switching module comprises an electromagnetic relay; the electromagnetic relay comprises a low-voltage control circuit and a high-voltage working circuit;
the low-voltage control circuit is electrically connected with the main control module.
Further, the grounding switching module comprises a solid-state relay, and a control end of the solid-state relay is electrically connected with the main control module.
Furthermore, the measuring device also comprises a GPRS communication module, and the GPRS communication module is electrically connected with the main control module;
the master control module is used for realizing and keeping away from the GPRS communication module to be provided with the measuring device, and the master control module is connected with the other end of the overhead power line in a communication mode.
Further, the main control module comprises a control submodule and a signal receiving submodule;
the signal receiving submodule is electrically connected with the GPRS communication module and the control submodule and is used for receiving the control instruction transmitted by the GPRS communication module and transmitting the control instruction to the control submodule;
the control submodule is electrically connected with the grounding switching module and controls the grounding switching module to act based on the control command.
Further, the main control module further comprises a signal feedback sub-module;
the signal feedback submodule is electrically connected with the GPRS communication module and the control submodule and used for sending a wiring feedback signal to one end of the electric overhead line far away from the measuring device based on the control of the control submodule after the grounding switching module acts
Furthermore, the main control module also comprises a sampling control sub-module;
the sampling control submodule is electrically connected with the line sampling module and the control submodule, and the sampling control submodule controls the line sampling module to collect the line parameters of the overhead power line under the control of the control submodule.
Furthermore, the measuring device further comprises a power supply module, wherein the power supply module is electrically connected with the main control module and used for supplying power to the main control module.
Further, the power module comprises a 12V lithium battery and a DC/DC converter, and the DC/DC converter is used for converting 12V voltage into 5V voltage for the main control module to use.
The utility model discloses a measuring device, which is arranged at one end of an electric overhead line and comprises a grounding switching module, a line sampling module and a main control module; the grounding switching module is electrically connected with the main control module and is controlled by the main control module to realize grounding or suspension of the overhead power line; the circuit sampling module is electrically connected with the main control module, and after the grounding switching module acts, the circuit sampling module collects circuit parameters of the overhead power circuit based on the control of the main control module; the main control module controls the grounding switching module and the line sampling module to act based on the received control instruction, wherein the control instruction is transmitted to the main control module by the man-machine interaction module, and the man-machine interaction module is arranged at the other end of the overhead power line far away from the measuring device. This application replaces artifical manual wiring through setting up ground connection auto-change over device, and it needs artifical manual carrying out the three-phase line ground connection or the unsettled consuming time power that leads to have solved among the prior art electric power overhead line when carrying out the line parameter measurement, and there is the technical problem of risk in the personal safety of staff in the wiring process, has realized carrying out the ground connection or unsettled of three-phase line through automatic control's method, not only convenient and fast and the higher technological effect of security.
Drawings
Fig. 1 is a structural diagram of a measuring device according to an embodiment of the present invention;
fig. 2 is a structural diagram of another measuring device provided in the embodiment of the present invention;
fig. 3 is a structural diagram of another measuring device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and the accompanying drawings are used for distinguishing different objects, and are not intended to limit a specific order. The embodiments of the present invention can be implemented individually, and can be implemented by combining each other between the embodiments, and the embodiments of the present invention are not limited to this.
Fig. 1 is a structural diagram of a measuring device according to an embodiment of the present invention.
The measuring device is arranged at one end of the overhead power line, and as shown in fig. 1, the measuring device comprises a grounding switching module 10, a line sampling module 20 and a main control module 30.
The grounding switching module 10 is electrically connected with the main control module 30, and the grounding switching module 10 realizes grounding or suspension of the overhead power line under the control of the main control module 30. The line sampling module 20 is electrically connected with the main control module 30, and after the grounding switching module 10 acts, the line sampling module 20 collects line parameters of the overhead power line based on the control of the main control module 30.
The main control module 30 controls the grounding switching module 10 and the line sampling module 20 to act based on the received control instruction, wherein the control instruction is transmitted to the main control module 30 by the human-computer interaction module 101, and the human-computer interaction module 101 is arranged at the other end of the overhead power line far away from the measuring device.
In the embodiment of the present invention, the measuring device is disposed at one end of the power overhead line, and the end of the power overhead line is referred to as the end for convenience of description, and the other end of the power overhead line away from the measuring device is referred to as the far end.
Specifically, a human-computer interaction module 101 is arranged at the far end of the power overhead line, the human-computer interaction module 101 can send a control instruction to the main control module 30 in the measurement device at the tail end of the power overhead line according to a signal input by a worker, for example, the control instruction is a voltage value of a three-phase line to be measured, then the main control module 30 controls the grounding switching module 10 to ground or suspend the three-phase line based on the received control instruction and a test requirement, and after the grounding switching module 10 completes an action, the control line sampling module 20 collects a line parameter indicated by the control instruction. It should be noted that the line parameters may be parameters of a positive sequence resistance, a zero sequence resistance, a positive sequence capacitance, a zero sequence capacitance, and the like of the three-phase line, and may also be other parameters required for performing parameter testing on the overhead power line.
The embodiment of the utility model provides an in, host system 30 can adopt the singlechip, for example STM32 series singlechip etc. also can adopt the singlechip of other models as required, no longer gives unnecessary details here.
This application replaces artifical manual wiring through setting up ground connection auto-change over device, and it needs artifical manual carrying out the three-phase line ground connection or the unsettled consuming time power that leads to have solved among the prior art electric power overhead line when carrying out the line parameter measurement, and there is the technical problem of risk in the personal safety of staff in the wiring process, has realized carrying out the ground connection or unsettled of three-phase line through automatic control's method, not only convenient and fast and the higher technological effect of security.
Optionally, the ground switching module 10 includes a vacuum relay, the coil of which is electrically connected to the main control module 30.
Specifically, the grounding switching module 10 may adopt a relay to automatically control the grounding and suspending actions of the three-phase line, because in the line parameter test of the power overhead line, the internal resistance of the relay is required to be not too large (ideally, 0 ohm) when measuring the positive sequence or zero sequence impedance, otherwise, the test result is affected; when testing the positive sequence or zero sequence capacitance, the leakage current of the relay is required not to be too large (less than 5 muA); meanwhile, the relay is required to be incapable of generating electric sparks when being switched.
The vacuum relay has small influence on the parameters of the test circuit because the on-state internal resistance of the vacuum relay is small and the leakage current is small; and because vacuum relay adopts the vacuum principle, inside can not produce the electric spark, withstand voltage reaches dozens of kilovolts between the contact simultaneously, consequently based on above-mentioned three demand, ground connection switching module 10 can adopt vacuum relay to realize the utility model discloses the required effect of embodiment.
Specifically, the coil of the vacuum relay is connected with the main control module 30, and the main control module 30 provides a control current to the coil of the vacuum relay, so that the coil of the vacuum relay generates an electromagnetic force, and further, the armature arranged in the vacuum is made to act through the electromagnetic force, and the moving contact of the vacuum relay is driven to act, thereby realizing grounding or suspension of a three-phase circuit.
The embodiment of the utility model provides an in, ground connection switches over module 10 and switches on the internal resistance through the use little, and leakage current is little, and switches sparkless vacuum relay under the ten thousand volt voltages, not only can satisfy above-mentioned corresponding test needs, has still promoted the accuracy of line parameter test.
Optionally, the ground switching module 10 comprises an electromagnetic relay; the electromagnetic relay comprises a low-voltage control circuit and a high-voltage working circuit; the low voltage control circuit is electrically connected to the main control module 30.
Specifically, the ground switching module 10 may further use an electromagnetic relay as needed, and the electromagnetic relay has the advantages of small on-state internal resistance, small leakage current, and small influence on measurement data.
The electromagnetic relay comprises a low-voltage control circuit and a high-voltage working circuit, the low-voltage control circuit is electrically connected with the main control module 30, the main control module 30 can provide control current for an electromagnetic relay coil arranged in the low-voltage control circuit, and the electromagnetic relay coil generates a magnetic field after being electrified, so that attraction is generated on an armature iron in the low-voltage control circuit, movable and static contacts in the high-voltage working circuit are made to act, the high-voltage working circuit is closed, a motor in the high-voltage working circuit works, and grounding or suspension action of a three-phase circuit is completed.
Optionally, the ground switching module 10 includes a solid-state relay, and a control terminal of the solid-state relay is electrically connected to the main control module 30.
Specifically, the ground switching module 10 may also use a solid-state relay, which has an advantage in that the internal structure uses a thyristor control circuit, so that it has an advantage in that contact switching does not generate electric sparks. The solid-state relay uses an isolation device to realize the isolation of a control end and a load end, the control end of the solid-state relay is connected with a main control module 30, the main control module 30 provides a control signal for the control end of the solid-state relay, and the grounding or suspension of a three-phase circuit is realized through the action of the solid-state relay.
Fig. 2 is a structural diagram of another measuring device according to an embodiment of the present invention.
Optionally, as shown in fig. 2, the measuring apparatus further includes a GPRS communication module 40, and the GPRS communication module 40 is electrically connected to the main control module 30; the main control module 30 is in communication connection with the other end of the overhead power line far away from the measuring device through the GPRS communication module 40.
Specifically, the measuring device is further provided with a GPRS communication module 40, and the main control module 30 at the tail end of the power overhead line can be in communication connection with the far end of the power overhead line through the GPRS communication module 40. The mode of using wireless communication not only reduces the wiring, has simplified measuring device's structure, has still improved communication efficiency simultaneously, has promoted communication quality.
Fig. 3 is a structural diagram of another measuring device according to an embodiment of the present invention.
Optionally, as shown in fig. 3, the main control module 30 includes a control sub-module 31 and a signal receiving sub-module 32; the signal receiving submodule 32 is electrically connected with the GPRS communication module 40 and the control submodule 31, and is configured to receive the control instruction sent by the GPRS communication module 31 and send the control instruction to the control submodule 31; the control submodule 31 is electrically connected to the ground switching module 10, and the control submodule 31 controls the ground switching module 10 to operate based on the control command.
Specifically, when the remote end of the overhead power line sends a control instruction to the main control module 30 through the GPRS communication module 40, the signal receiving submodule 31 disposed in the main control module 30 can receive the control instruction and transmit the control instruction to the control submodule 31 in the main control module 30, and the control submodule 31 controls the ground switching module 10 to complete a corresponding action based on the received control instruction.
Optionally, as shown in fig. 3, the main control module 30 further includes a signal feedback sub-module 33; the signal feedback submodule 33 is electrically connected with the GPRS communication module 40 and the control submodule 31, and is configured to send a wiring feedback signal to one end of the overhead power line, which is far away from the measuring device, through the GPRS communication module 40 based on the control of the control submodule 31 after the ground switching module 10 acts.
Specifically, after the control submodule 31 controls the grounding switching module 10 to operate based on the received control instruction, an operation completion signal is sent to the signal feedback submodule 33 in the main control module 30, and the signal feedback submodule 33 sends a wiring feedback signal to the far end of the overhead power line through the GPRS communication module 40 based on the received operation completion signal, so that the far end determines that the wiring of the three-phase line at the tail end is completed, and a test of line parameters can be performed, so that the far end of the overhead power line transmits three-phase voltage to the tail end.
Optionally, as shown in fig. 3, the main control module 30 further includes a sampling control sub-module 34; the sampling control submodule 34 is electrically connected with the line sampling module 20 and the control submodule 31, and the sampling control submodule 34 controls the line sampling module 20 to collect line parameters of the overhead power line under the control of the control submodule 31.
Specifically, after the signal feedback sub-module 33 sends a feedback signal to the far end of the power overhead line, the control sub-module 31 in the main control module 30 can control the sampling control sub-module 34 to send an action signal to the line sampling module 20, so that the line sampling module 20 starts to collect corresponding line parameters of the power overhead line.
Optionally, as shown in fig. 2, the measuring apparatus further includes a power module 50, and the power module 50 is electrically connected to the main control module 30 and is configured to supply power to the main control module 30.
Optionally, the power module 50 includes a 12V lithium battery and a DC/DC converter, and the DC/DC converter is configured to convert a 12V voltage into a 5V voltage for the main control module to use.
Specifically, the power module 50 in the measuring device is converted into a voltage of 5V by a 12V lithium battery through a DC/DC converter, and provides a working voltage for the main control module 30.
Use the embodiment of the utility model provides a measuring device has following advantage: (1) the GPRS communication module is utilized to realize communication interaction at two ends of the overhead power line, and the test states at the two ends of the overhead power line can be known in real time; (2) the main control module is used for controlling the grounding switching module to realize automatic wiring work of line parameter testing, the line parameter testing can be completed only by once wiring, and the wiring work of workers for repeatedly going up and down telegraph poles is greatly reduced; (3) the safety of the field test is improved.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. The measuring device is characterized by being arranged at one end of an electric overhead line and comprising a grounding switching module, a line sampling module and a main control module;
the grounding switching module is electrically connected with the main control module and is used for realizing grounding or suspension of the overhead power line under the control of the main control module;
the line sampling module is electrically connected with the main control module, and after the grounding switching module acts, the line sampling module collects line parameters of the overhead power line based on the control of the main control module;
the main control module controls the grounding switching module and the line sampling module to act based on a received control instruction, wherein the control instruction is transmitted to the main control module by the man-machine interaction module, and the man-machine interaction module is arranged at the other end of the overhead power line far away from the measuring device.
2. The measurement device of claim 1, wherein the ground switching module comprises a vacuum relay having a coil electrically connected to the master control module.
3. The measurement device of claim 1, wherein the ground switching module comprises an electromagnetic relay; the electromagnetic relay comprises a low-voltage control circuit and a high-voltage working circuit;
the low-voltage control circuit is electrically connected with the main control module.
4. The measurement device of claim 1, wherein the ground switching module comprises a solid state relay having a control terminal electrically connected to the master control module.
5. The measuring device according to claim 1, further comprising a GPRS communication module electrically connected to the main control module;
the master control module is used for realizing and keeping away from the GPRS communication module to be provided with the measuring device, and the master control module is connected with the other end of the overhead power line in a communication mode.
6. The measuring device according to claim 5, wherein the main control module comprises a control sub-module and a signal receiving sub-module;
the signal receiving submodule is electrically connected with the GPRS communication module and the control submodule and is used for receiving the control instruction transmitted by the GPRS communication module and transmitting the control instruction to the control submodule;
the control submodule is electrically connected with the grounding switching module and controls the grounding switching module to act based on the control command.
7. The measurement device of claim 6, wherein the master control module further comprises a signal feedback sub-module;
the signal feedback submodule is electrically connected with the GPRS communication module and the control submodule and used for sending a wiring feedback signal to one end, far away from the measuring device, of the electric overhead line based on the control of the control submodule after the grounding switching module acts.
8. The measurement device of claim 6, wherein the master control module further comprises a sampling control sub-module;
the sampling control submodule is electrically connected with the line sampling module and the control submodule, and the sampling control submodule controls the line sampling module to collect the line parameters of the overhead power line under the control of the control submodule.
9. The measurement device according to claim 1, further comprising a power module electrically connected to the main control module for supplying power to the main control module.
10. The measurement device according to claim 9, wherein the power module comprises a 12V lithium battery and a DC/DC converter for converting a 12V voltage to a 5V voltage for use by the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531828.1U CN215116587U (en) | 2021-07-06 | 2021-07-06 | Measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531828.1U CN215116587U (en) | 2021-07-06 | 2021-07-06 | Measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215116587U true CN215116587U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121531828.1U Active CN215116587U (en) | 2021-07-06 | 2021-07-06 | Measuring device |
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| CN (1) | CN215116587U (en) |
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2021
- 2021-07-06 CN CN202121531828.1U patent/CN215116587U/en active Active
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