Device for local fault indication of lightning protection voltage limiter

Abstract

The utility model discloses a device used for lightning protection voltage limiter local fault indication, the device comprises a monitoring report circuit and a fault indication circuit, the monitoring report circuit and the fault indication circuit are both connected with an induction coil, the induction coil is arranged on the lightning protection voltage limiter, the fault indication circuit comprises an indication circuit, and the indication circuit is connected with the lightning protection voltage limiter. The indicating circuit adopts indicating lamps with different colors to display the operation state of the lightning protection voltage limiter. When the power transmission line breaks down, the power transmission line fault detection device can provide clear indication, help to quickly position a fault area, and help operators and maintenance personnel to quickly identify and know the working condition of the power transmission line, thereby performing effective management and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection voltage limiters, in particular to a device for indicating local faults of lightning protection voltage limiters. Background Art

[0002] Lightning arrester voltage limiters are key devices used to protect power systems, communication lines, industrial automation, and other sensitive electronic equipment from lightning surges and electrical overvoltages. They are widely used in various industries around the world, including power, communications, transportation, construction, and industrial automation.

[0003] At present, operators are often required to conduct on-site tests on the working status of lightning arrester voltage limiters, which not only affects the maintenance efficiency of transmission lines but also increases labor costs. Utility Model Content

[0004] The purpose of the utility model is to provide a device for indicating local faults of a lightning protection voltage limiter, so as to solve the technical problem of how to quickly identify and understand the working conditions of a power transmission line.

[0005] The utility model is implemented by adopting the following technical scheme: a device for local fault indication of a lightning protection voltage limiter, comprising a monitoring and reporting circuit and a fault indication circuit, wherein both the monitoring and reporting circuit and the fault indication circuit are connected to an induction coil, and the induction coil is arranged on the lightning protection voltage limiter, and the fault indication circuit comprises an indication circuit, and the indication circuit adopts indicator lights of different colors to display the operating status of the lightning protection voltage limiter.

[0006] Furthermore, the monitoring and reporting circuit includes a current sensor and a first MCU, the input end of the current sensor is connected to the induction coil, the output end of the current sensor is connected to the first MCU, and the first MCU is connected to the host computer through a dual communication channel.

[0007] Furthermore, the dual communication channel includes a LORA communication module and a 4G communication module, the input end of the LORA communication module and the input end of the 4G communication module are respectively connected to the output end of the first MCU; the output end of the LORA communication module and the output end of the 4G communication module are respectively connected to the host computer.

[0008] Furthermore, the fault indication circuit includes a second MCU and an AC current acquisition AD conversion circuit, the input end of the AC current acquisition AD conversion circuit is connected to the induction coil, and the output end of the AC current acquisition AD conversion circuit is connected to the second MCU.

[0009] Furthermore, the fault indication circuit also includes a display circuit, and the display circuit is connected to the output end of the second MCU.

[0010] Furthermore, the fault indication circuit also includes a power supply circuit, and the power supply circuit is connected to the second MCU.

[0011] Furthermore, the indicator circuit includes a green indicator light and a red indicator light, and the green indicator light and the red indicator light are respectively connected to the second MCU.

[0012] Furthermore, the indication circuit also includes a buzzer, and the buzzer is connected to the second MCU.

[0013] The beneficial effect of the present invention is that when a fault occurs in a power transmission line, the present invention can provide clear instructions to help quickly locate the fault area, and help operators and maintenance personnel quickly identify and understand the working status of the power transmission line, thereby carrying out effective management and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0015] Figure 1 This is the principle diagram of the utility model;

[0016] Figure 2 Report circuit schematics for monitoring;

[0017] Figure 3 This is the schematic diagram of the fault indication circuit;

[0018] Figure 4 This is the fault indication circuit diagram. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0021] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0022] See also Figure 1 A device for local fault indication of a lightning protection voltage limiter includes a monitoring and reporting circuit and a fault indication circuit. Both the monitoring and reporting circuit and the fault indication circuit are connected to an induction coil. The induction coil is arranged on the lightning protection voltage limiter. The induction coil is used to detect current changes in the transmission line. The fault indication circuit includes an indication circuit. The indication circuit uses indicator lights of different colors to display the operating status of the lightning protection voltage limiter.

[0023] See also Figure 2 The monitoring and reporting circuit includes a current sensor and a first MCU. The input end of the current sensor is connected to the induction coil, and the output end of the current sensor is connected to the first MCU. The first MCU is connected to the host computer via dual communication channels. The current sensor can be a LEM current sensor, which is used to detect the current flowing through the induction coil and upload it to the first MCU. Furthermore, the dual communication channels include a LoRa communication module and a 4G communication module. The input end of the LoRa communication module and the input end of the 4G communication module are respectively connected to the output end of the first MCU; the output end of the LoRa communication module and the output end of the 4G communication module are respectively connected to the host computer. Specifically, the first MCU can use a GD32E230 series microcontroller to process the data of the current sensor and upload it to the host computer through dual communication channels. The host computer can be a cloud platform. The LoRa communication module can use an SX127x series communication module, and the 4G communication module can use a Cat.1 series communication module. The LoRa communication module is used to wirelessly send the data of the first MCU to the LoRa gateway. The LoRa gateway receives the signal from the LoRa communication module and forwards it to the server or cloud platform; the 4G communication module is used to send data to the remote server or cloud platform, especially when the LoRa connection is unavailable or a more efficient data transmission rate is required, 4G communication is performed. The cloud platform receives data from the 4G communication module or the LoRa communication module, stores, analyzes, and provides it to users for monitoring and alarming.

[0024] See also Figure 3 、 Figure 4The fault indication circuit is used to detect whether the current in the induction coil exceeds a threshold value and control the indication circuit to display different colors based on the current in the induction coil, helping operators and maintenance personnel quickly identify and understand the working status of the line. The fault indication circuit includes a second MCU and an AC current acquisition AD conversion circuit. The input end of the AC current acquisition AD conversion circuit is connected to the induction coil, and the output end of the AC current acquisition AD conversion circuit is connected to the second MCU. The fault indication circuit also includes a display circuit, which is connected to the output end of the second MCU. Specifically, the fault indication circuit also includes a power supply circuit, which is connected to the second MCU to provide power to the entire fault indication circuit.

[0025] In this embodiment, the indicator circuit includes a green indicator light and a red indicator light, each connected to the second MCU. When the power transmission line is normally energized, the green light illuminates; when the power transmission line is abnormally energized, the red light illuminates. Furthermore, the indicator circuit may also include a buzzer, connected to the second MCU, that sounds a warning when the power transmission line is abnormally energized.

[0026] Based on the above embodiments, the present invention has at least the following technical effects: 1. Fault indication: When a line fault occurs, the indicator device can provide clear indications to help quickly locate the fault area. 2. Operation assistance: When performing line operations, such as switch operations, line switching, etc., the indicator device can provide necessary information support. 3. Maintenance reminder: The indicator device can display the maintenance status of the line, reminding maintenance personnel to perform regular inspections and maintenance. 4. Durability: Since the line indicator device is often installed outdoors or in harsh environments, it needs to have good durability and reliability.

[0027] It should be noted that the terms "connected" and "set" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "connected" and "set" may explicitly or implicitly include one or more of the features. Moreover, the terms "connected", "set", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. And for the aforementioned embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited to the order of the actions described, because according to this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by this application.

[0028] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A device for indicating local faults of a lightning protection voltage limiter, characterized in that: It includes a monitoring and reporting circuit and a fault indication circuit, both of which are connected to an induction coil, which is arranged on the lightning protection voltage limiter. The fault indication circuit includes an indication circuit, which uses indicator lights of different colors to display the operating status of the lightning protection voltage limiter.

2. A device for local fault indication of a lightning protection voltage limiter according to claim 1, characterized in that: The monitoring and reporting circuit includes a current sensor and a first MCU. The input end of the current sensor is connected to the induction coil, the output end of the current sensor is connected to the first MCU, and the first MCU is connected to the host computer through a dual communication channel.

3. A device for local fault indication of a lightning protection voltage limiter according to claim 2, characterized in that: The dual communication channel includes a LORA communication module and a 4G communication module, the input end of the LORA communication module and the input end of the 4G communication module are respectively connected to the output end of the first MCU; the output end of the LORA communication module and the output end of the 4G communication module are respectively connected to the host computer.

4. The device for local fault indication of a lightning protection voltage limiter according to claim 1, characterized in that: The fault indication circuit includes a second MCU and an AC current acquisition AD conversion circuit, the input end of the AC current acquisition AD conversion circuit is connected to the induction coil, and the output end of the AC current acquisition AD conversion circuit is connected to the second MCU.

5. The device for local fault indication of a lightning protection voltage limiter according to claim 4, characterized in that: The fault indication circuit further includes a display circuit, and the display circuit is connected to the output end of the second MCU.

6. The device for indicating local faults of a lightning protection voltage limiter according to claim 5, characterized in that: The fault indication circuit further includes a power supply circuit, and the power supply circuit is connected to the second MCU.

7. The device for local fault indication of a lightning protection voltage limiter according to claim 6, characterized in that: The indicating circuit includes a green indicator light and a red indicator light, and the green indicator light and the red indicator light are respectively connected to the second MCU.

8. The device for indicating local faults of a lightning protection voltage limiter according to claim 7, characterized in that: The indicating circuit further includes a buzzer, which is connected to the second MCU.

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