CN215297463U - Grounding switching device and test equipment - Google Patents

Abstract

The utility model discloses a grounding switching device and a test device, wherein the grounding switching device is arranged at one end of an electric overhead line and comprises a grounding switching module, a control module and a safety protection module; the grounding switching module is electrically connected with the control module and is used for realizing grounding or suspension of the overhead power line under the control of the control module; the safety protection module is arranged on the outer surface of the grounding switching device, and the safety protection module monitors whether a living body is close to the grounding switching device within a preset distance range. This application carries out automatic action through using control module control ground connection switching module to electric power overhead line's wiring to set up the safety protection module on ground connection switching module and ensure personnel's safety, realized the ground connection or unsettled that can the automatic control three-phase line, do not need artifical manual wiring, can ensure personnel's personal safety's technological effect again.

Description

Grounding switching device and test equipment

Technical Field

The embodiment of the utility model provides an automatic control technical field especially relates to a ground connection auto-change over device and test equipment.

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 ground connection auto-change over device and test equipment has solved the technical problem that needs artifical manual to carry out the consuming time power and the staff's that ground connection or unsettled action lead to three-phase line the personal safety can't obtain the guarantee among the prior art.

The embodiment of the utility model provides a grounding switching device, the grounding switching device is arranged at one end of an electric overhead line, and comprises a grounding switching module, a control module and a safety protection module;

the grounding switching module is electrically connected with the control module and is used for realizing grounding or suspension of the overhead power line under the control of the control module;

the safety protection module is arranged on the outer surface of the grounding switching device and monitors whether a living body is close to the grounding switching device within a preset distance range.

Further, the safety protection module comprises at least four infrared sensors;

the four infrared sensors are arranged on the outer surface of the grounding switching device and distributed around the grounding switching device.

Further, the system also comprises an alarm module;

the alarm module is electrically connected with the safety protection module;

and the alarm module executes an alarm action when the safety protection module detects that the living body enters the preset distance range.

Further, the alarm module comprises at least one of: warning light and bee calling organ.

Furthermore, the system also comprises a wireless communication module; the wireless communication module is electrically connected with the control module;

and the control module is in communication connection with the other end of the overhead power line through the wireless communication module.

Further, the wireless communication module comprises at least one of the following: GPRS communication submodule, bluetooth submodule and WIFI submodule.

Further, the system also comprises a human-computer interaction module; the human-computer interaction module is electrically connected with the control module;

and the human-computer interaction module is used for calling and displaying the line parameters in the control module.

Furthermore, the human-computer interaction module comprises a key and a touch display screen.

Furthermore, the power supply module is electrically connected with the control module and used for supplying power to the control module.

The embodiment of the utility model also provides a test device, the test device includes the grounding switching device of any one of the above embodiments, and also includes a data acquisition unit;

the data acquisition unit is electrically connected with a control module in the grounding switching device; and the data acquisition unit acquires the line parameters of the overhead power line under the control of the control module.

The utility model discloses a grounding switching device and a test device, wherein the grounding switching device is arranged at one end of an electric overhead line and comprises a grounding switching module, a control module and a safety protection module; the grounding switching module is electrically connected with the control module and is used for realizing grounding or suspension of the overhead power line under the control of the control module; the safety protection module is arranged on the outer surface of the grounding switching device, and the safety protection module monitors whether a living body is close to the grounding switching device within a preset distance range. This application carries out automatic action through the wiring that uses control module control ground connection switching module to electric power overhead line, and set up the safety protection module on ground connection switching module and ensure personnel's safety, the technical problem that needs artifical manual to carry out consuming time power that ground connection or unsettled action lead to and staff's personal safety can't obtain the guarantee to three-phase line among the prior art has been solved, realized can automatic control three-phase line's ground connection or unsettled, do not need artifical manual wiring, can ensure personnel's personal safety's technological effect again.

Drawings

Fig. 1 is a structural diagram of a ground switching device according to an embodiment of the present invention;

fig. 2 is a structural diagram of another grounding switch device according to an embodiment of the present invention;

fig. 3 is a structural diagram of a testing apparatus 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 ground switching device according to an embodiment of the present invention.

The grounding switching device 100 is arranged at one end of an overhead power line, and as shown in fig. 1, includes a grounding switching module 10, a control module 20 and a safety protection module 30; the grounding switching module 10 is electrically connected with the control module 20, and the grounding switching module 10 realizes grounding or suspension of the overhead power line under the control of the control module 20; the safety protection module 30 is disposed on the outer surface of the grounding switch device 100, and the safety protection module 30 monitors whether a living body is close to the grounding switch device 100 within a preset distance range.

In the embodiment of the present invention, the ground switching device 100 is disposed at one end of the power overhead line, and for convenience of description, one end of the power overhead line provided with the ground switching device 100 is referred to as an end, and the other end of the power overhead line away from the ground switching device 100 is referred to as a far end.

Specifically, a human-computer interaction device is arranged at the far end of the power overhead line, the human-computer interaction device can send a control instruction to the control module 20 in the grounding switching device 100 at the tail end of the power overhead line according to a signal input by a worker, and the control module 20 controls the grounding switching module 10 to ground or suspend the three-phase line based on the received control instruction and the test requirement; in the working process of the grounding switching module 10, the safety protection module 30 disposed thereon can monitor whether there is a living body in the preset distance range of the grounding switching device 100 in real time, that is, whether there is a person approaching, so as to ensure the safety of the person. The preset distance range is usually set to be 5 meters, and can be adjusted to other distance ranges according to actual needs, which is not described herein again.

It should be noted that, in order to ensure the accuracy of the test result in the line parameter test of the overhead power 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; 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. Therefore, for the above reasons, one of a vacuum relay, an electromagnetic relay, or a solid-state relay may be selected as the ground switching module 10 as needed, wherein the vacuum relay has a small on-state internal resistance and a small leakage current, so that the vacuum relay has a minimum influence on the parameters of the test line among the three relays, and since the vacuum relay adopts a vacuum principle, no electric spark is generated inside the vacuum relay, and the withstand voltage between the contacts is as high as tens of kilovolts, the test effect of the vacuum relay among the three relays is the best; the electromagnetic relay has the advantages of small conduction internal resistance, small leakage current and small influence on measured data, but the through-current capacity is too small and is generally only dozens of amperes; meanwhile, the withstand voltage of the contact is only kilovolt grade; the solid-state relay has the advantages that the silicon controlled rectifier control circuit is used in the internal structure, so electric sparks cannot be generated during contact switching, the disadvantages are that the conduction internal resistance is large and is 50 milliohms, the leakage current reaches 10 milliamperes, and meanwhile, the withstand voltage between contacts is only 2500 volts. In the actual use process, staff can select as required.

This application carries out automatic action through the wiring that uses control module control ground connection switching module to electric power overhead line, and set up the safety protection module on ground connection switching module and ensure personnel's safety, the technical problem that needs artifical manual to carry out consuming time power that ground connection or unsettled action lead to and staff's personal safety can't obtain the guarantee to three-phase line among the prior art has been solved, realized can automatic control three-phase line's ground connection or unsettled, do not need artifical manual wiring, can ensure personnel's personal safety's technological effect again.

Optionally, as shown in fig. 1, safety shield module 30 includes at least four infrared sensors; the four infrared sensors are disposed on the outer surface of the grounding switch device 100 and distributed around the grounding switch module 10.

Specifically, four infrared sensors in the safety protection module 30 are respectively disposed on the outer surfaces of the grounding switch device 100 in four directions, so as to monitor whether there is a living body near the periphery of the grounding switch device 100 in real time.

Fig. 2 is a structural diagram of another grounding switch device according to an embodiment of the present invention.

Optionally, as shown in fig. 2, the grounding switch device 100 further includes an alarm module 40; the alarm module 40 is electrically connected with the safety protection module 30; the alarm module 40 performs an alarm action when the safety protection module 30 detects that an animate object enters within the preset distance range.

Optionally, the alarm module 40 includes at least one of: warning light and bee calling organ.

Specifically, when the safety protection module 30 detects that a person enters the preset distance range of the ground switching module 10, an alarm signal is sent to the alarm module 40, and the alarm module 40 controls the warning lamp to flash or controls the buzzer to send an alarm prompt tone based on the received alarm signal, so as to prompt the person to enter the safety distance range.

Optionally, as shown in fig. 2, the grounding switch device 100 further includes a wireless communication module 50; the wireless communication module 50 is electrically connected with the control module 20; the control module 20 is in communication connection with the other end of the overhead power line through the wireless communication module 50.

Optionally, the wireless communication module 50 includes at least one of: GPRS communication submodule, bluetooth submodule and WIFI submodule.

Specifically, the grounding switching device 100 is further provided with a wireless communication module 50, and the control module 20 at the end of the power overhead line can realize communication connection with the far end of the power overhead line through the wireless communication module 50. In order to enable the grounding switching device 100 to work under different network environments, different communication modules such as a GPRS communication sub-module, a Bluetooth sub-module and a WIFI sub-module can be arranged in the wireless communication module 50 as required, and communication connection is performed in a wireless communication mode, so that wiring is reduced, the structure of the measuring device is simplified, communication efficiency is improved, and communication quality is improved.

Optionally, as shown in fig. 2, the grounding switching device 100 further includes a human-computer interaction module 60; the human-computer interaction module 60 is electrically connected with the control module 20; the human-computer interaction module 60 is used for calling and displaying the line parameters in the control module 20.

Optionally, the human-computer interaction module 60 comprises keys and a touch display screen.

Specifically, the ground switching device 100 is further provided with a human-computer interaction module 60, and a worker can send a call instruction to the control module 20 through a key or a touch display screen on the human-computer interaction module 60, so as to conveniently and quickly check the line parameters of the power overhead line stored in the control module 20 through the touch display screen of the human-computer interaction module 60.

Optionally, as shown in fig. 2, the ground switching device 100 further includes a power module 70, and the power module 70 is electrically connected to the control module 20 and is configured to supply power to the control module 20.

Specifically, the power module 50 in the ground switching device 100 is provided with a 12V lithium battery and a DC/DC converter, and the 12V lithium battery can be converted into a 5V voltage through the DC/DC converter to provide an operating voltage for the control module 20.

Use the embodiment of the utility model provides a measuring device has following advantage: (1) the communication interaction at two ends of the overhead power line is realized by utilizing wireless communication technologies such as a GPRS communication submodule, a Bluetooth submodule and a WIFI submodule, so that the grounding switching device can work in different network environments; (2) the safety protection module and the high-grade module are arranged, when life approaches the preset distance range of the grounding switching device, sound and light are emitted to high grade, a user is prompted to finish a test, and safety is greatly improved; (3) the wiring action of the power overhead line is automatically controlled, the workload of workers is reduced, and time and labor are saved.

The embodiment of the present invention further provides a testing device, fig. 3 is a structural diagram of the testing device provided in the embodiment of the present invention, and as shown in fig. 3, the testing device includes the grounding switch device 100 described in any of the above embodiments, and further includes a data acquisition unit 200; the data acquisition unit 200 is electrically connected with the control module 20 in the grounding switching device 100; the data acquisition unit 200 acquires line parameters of the overhead power line under the control of the control module 20.

The embodiment of the utility model provides a test equipment includes the ground connection auto-change over device in the above-mentioned embodiment, consequently the embodiment of the utility model provides a test equipment also possesses the beneficial effect that the above-mentioned embodiment described, and this is no longer repeated here.

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 grounding switching device is characterized by being arranged at one end of an electric overhead line and comprising a grounding switching module, a control module and a safety protection module;

the grounding switching module is electrically connected with the control module and is used for realizing grounding or suspension of the overhead power line under the control of the control module;

the safety protection module is arranged on the outer surface of the grounding switching device and monitors whether a living body is close to the grounding switching device within a preset distance range.

2. The ground switching apparatus of claim 1 wherein said safety shield module comprises at least four infrared sensors;

the four infrared sensors are arranged on the outer surface of the grounding switching device and distributed around the grounding switching device.

3. The ground switching apparatus of claim 1, further comprising an alarm module;

the alarm module is electrically connected with the safety protection module;

and the alarm module executes an alarm action when the safety protection module detects that the living body enters the preset distance range.

4. The ground switching apparatus of claim 3 wherein said alarm module comprises at least one of: warning light and bee calling organ.

5. The ground switching apparatus of claim 1, further comprising a wireless communication module; the wireless communication module is electrically connected with the control module;

and the control module is in communication connection with the other end of the overhead power line through the wireless communication module.

6. The ground switching device of claim 5, wherein the wireless communication module comprises at least one of: GPRS communication submodule, bluetooth submodule and WIFI submodule.

7. The ground switching device of claim 1, further comprising a human-machine interaction module; the human-computer interaction module is electrically connected with the control module;

and the human-computer interaction module is used for calling and displaying the line parameters in the control module.

8. The ground switching device of claim 7, wherein the human-computer interaction module comprises a key and a touch display screen.

9. The ground switching apparatus of claim 1, further comprising a power module electrically connected to the control module for supplying power to the control module.

10. A test apparatus, characterized in that the test apparatus comprises the grounding switch device of any one of the claims 1-9, and further comprises a data acquisition unit;

the data acquisition unit is electrically connected with a control module in the grounding switching device; and the data acquisition unit acquires the line parameters of the overhead power line under the control of the control module.

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