Tubular busbar state monitoring device

Abstract

The utility model discloses a tubular busbar state monitoring device, which comprises a wireless temperature measurement sensor, a leakage current sensor, a collector and a monitoring terminal, and is characterized in that the wireless temperature measurement sensor is bound at a tubular busbar contact position and is used for collecting temperature data of a tubular busbar; the leakage current sensor is arranged on the mounting bracket and is clamped on the protective layer grounding wire, and the leakage current sensor is used for capturing leakage current information of the tubular bus; the collector is in communication connection with the wireless temperature measurement sensor and the leakage current sensor, and the collector is used for receiving data sent by the wireless temperature measurement sensor and the leakage current sensor and performing primary processing; and the monitoring terminal is in communication connection with the collector. The device realizes the real-time monitoring of the temperature and leakage current of the tubular bus through the wireless temperature measurement sensor and the leakage current sensor, improves the timeliness and accuracy of monitoring, visually displays the monitoring data through the on-site display screen and the monitoring terminal, enables the operation and maintenance personnel to conveniently check the data of the tubular bus of the whole station, and improves the work efficiency. And the conclusion of the tubular bus operation state is quickly obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to power system monitoring technical field, concretely relates to a pipe type busbar state monitoring device. BACKGROUND

[0002] In recent years, 10kV, 35kV pipe type busbar is used in transformer substation, instead of the original bare hard busbar design.This change brings significant advantages such as large carrying capacity, convenient construction, etc.However, due to the sealing and concealment characteristics of the pipe type busbar joint, defects are not easy to be intuitively found, and there is a great safety hazard.

[0003] The outer layer of the pipe bus is insulating material and is grounded, and the typical fault of the pipe bus is insulation breakdown, causing single-phase grounding fault.The damage or deterioration of the insulating material is the overheating feature of the weak point of insulation, and the heating of the pipe bus is an important factor leading to insulation deterioration.The leakage current of the pipe bus shield layer to the ground is an important indicator reflecting the degree of insulation deterioration.

[0004] At present, there is no effective online monitoring means for defect monitoring and prediction under the operating state of the pipe bus, mainly relying on the operation and maintenance personnel to carry out non-contact detection by carrying infrared imaging instrument and ultrasonic partial discharge monitor regularly, and this method has problems such as insufficient timeliness, high labor input and low work efficiency. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a pipe type busbar state monitoring device.

[0006] The technical scheme for solving the above technical problems is as follows: a pipe type busbar state monitoring device, comprising:

[0007] Wireless temperature measurement sensor, the wireless temperature measurement sensor is bound to the pipe bus contact, and the wireless temperature measurement sensor has automatic induction power function, and is used for collecting pipe bus temperature data;

[0008] Leakage current sensor, the leakage current sensor is arranged on the mounting bracket and is clamped on the shield ground wire, and the leakage current sensor is used for capturing pipe bus leakage current information;

[0009] Collector, the collector is installed on the wall surface, and is respectively communicated with the wireless temperature measurement sensor and the leakage current sensor, and the collector is used for receiving the data sent by the wireless temperature measurement sensor and the leakage current sensor, and carrying out preliminary processing;

[0010] Monitoring terminal, the monitoring terminal is communicated with the collector.

[0011] Further, the mounting bracket comprises a stand, a triangular support frame arranged on the stand and a mounting plate arranged on the triangular support frame, and the leakage current sensor is arranged on the mounting plate.

[0012] Further, the leakage current sensor adopts three power taking transformers, and each power taking transformer is independent of each other, and each power taking transformer is respectively configured with a single power module, a measurement module and a communication module.

[0013] Further, the open transformer for measurement in the leakage current sensor is clamped on the sheath ground wire.

[0014] Further, the collector accesses the monitoring terminal through the original remote.

[0015] Further, the collector is further communicatively connected with the on-site display unit.

[0016] Further, the on-site display unit is a display screen.

[0017] The pipe-type bus status monitoring device has the following beneficial effects: the pipe-type bus status monitoring device provided by the utility model has reliable structure and good use performance, realizes real-time monitoring of pipe bus temperature and leakage current through the wireless temperature measuring sensor and the leakage current sensor, and improves timeliness and accuracy of monitoring; monitoring data is intuitively displayed through the on-site display screen and the monitoring terminal, and operation and maintenance personnel can conveniently check data of the whole station pipe bus and quickly draw a conclusion of the pipe bus operation state. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The utility model structural diagram is provided for the utility model;

[0019] Fig. 2 The leakage current sensor installation schematic diagram in the utility model is provided for the utility model;

[0020] Figs. 1-2 The reference signs shown in the drawings respectively represent: 1-wireless temperature measuring sensor, 2-leakage current sensor, 3-collector, 4-monitoring terminal, 5-on-site display unit, 201-stand, 202-triangle support frame, 203-mounting plate. DETAILED DESCRIPTION

[0021] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used for explaining the utility model and are not used for limiting the scope of the utility model.

[0022] As Fig. 1As shown, a pipe busbar state monitoring device includes a wireless temperature sensor 1, a leakage current sensor 2, a collector 3 and a monitoring terminal 4. The wireless temperature sensor 1 is attached to the pipe busbar contact, and the wireless temperature sensor 1 has an automatic induction power function for collecting pipe busbar temperature data. The automatic induction power is obtained by using the large current of the pipe busbar. This non-contact energy acquisition method makes the sensor not need external power supply, thereby greatly simplifying the installation and maintenance process. Moreover, since the sensor is self-sufficient, the data transmission frequency can be relatively high, ensuring real-time monitoring of the pipe busbar temperature and the accuracy of the data.

[0023] The leakage current sensor 2 is arranged on the mounting bracket 20 and clamped on the sheath ground wire 7. The leakage current sensor 2 is used to capture pipe busbar leakage current information. The leakage current sensor 2 adopts three power inductors, and each power inductor is independent of each other. Each power inductor is respectively configured with a separate power module, a measurement module and a communication module. The three power inductors should be respectively installed on the single-phase pipe busbar to ensure that each phase can independently acquire energy and measure current. The three power inductors acquire energy from the single-phase pipe busbar to power the respective power modules. The open inductor for measurement in the leakage current sensor 2 is clamped on the sheath ground wire 7 to detect the leakage current on the ground wire. The measurement module processes and analyzes the collected current data, and the communication module is responsible for uploading the measured data to the collector 3.

[0024] In addition, as shown in Fig. 2 The mounting bracket 20 for installing the leakage current sensor includes a column 201, a triangular support frame 202 arranged on the column 201 and a mounting plate 203 arranged on the triangular support frame 202. The leakage current sensor 2 is arranged on the mounting plate 203. The column 201 serves as the support base of the entire bracket, which provides the necessary stability and height. The triangular support frame 202 is arranged on the column 201 to further enhance the structural stability and load-bearing capacity of the bracket. The triangular structure is very stable in mechanics, so this design can ensure that the bracket remains stable under various conditions. The mounting plate 203 is mounted on the triangular support frame 202 to provide a fixed and mounted platform for the leakage current sensor 2.

[0025] The collector 3 is installed at the wall surface or other location where power supply is easily obtained, and is in communication connection with the wireless temperature sensor 1 and the leakage current sensor, respectively. The collector 3 is used to receive the data sent by the wireless temperature sensor 1 and the leakage current sensor 2 and perform preliminary processing. The on-site display screen is used to display the pipe busbar state data at the substation site, which is convenient for operation and maintenance personnel to check immediately. The monitoring terminal 4 uploads the data to the remote dispatch center to realize remote monitoring.

[0026] The monitoring terminal 4 is in communication connection with the collector 3. Specifically, the collector 3 accesses the monitoring terminal 4 through the original remote communication, and the collector 3 needs to arrange communication access work with the remote communication, needs to perform protocol conversion, point table addition and forwarding to be able to deliver to the local monitoring and remote dispatch. Specifically, since different systems may adopt different communication protocols and data formats, protocol conversion is needed to ensure correct transmission and analysis of data. In the remote system, the point table is used to define and describe the equipment to be monitored and controlled and its state. In order to deliver the data of the collector 3 to the local monitoring and remote dispatch, the corresponding data points need to be added in the point table of the remote system, and the corresponding forwarding rules need to be configured. In this way, when the collector 3 sends data, the remote system can correctly deliver the data to the corresponding monitoring and remote dispatch according to the point table and the forwarding rule.

[0027] In addition to transmitting data to the main control room and the monitoring terminal, the collector 3 is also configured with a dedicated on-site display unit 5. The collector 3 is in communication connection with the on-site display unit 5, and the on-site display unit 5 is usually used to display data in real time at the installation site of the collector 3, so that the on-site personnel can quickly understand the equipment state and operation condition, and preferably, the on-site display unit 5 is a display screen.

[0028] In addition, all the transformers are only responsible for sending data but not receiving data, and the collector 3 is only responsible for receiving data but not sending data, and this one-way data transmission mode ensures the one-way flow and safety of data. The raw data collected by the temperature sensor and the leakage current sensor 2 is aggregated to the collector 3, and then the collector 3 performs preliminary processing and storage, and the processed data is sent to the on-site display screen and the monitoring terminal 4 through wired connection, for real-time viewing and analysis by the operator, so that the operator can master the temperature condition of the busbar at any time and take necessary measures to prevent accidents.

[0029] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tubular busbar condition monitoring device, characterized in that, include: Wireless temperature sensor (1), the wireless temperature sensor (1) is attached to the contact point of the tube nut, and the wireless temperature sensor (1) has an automatic sensing and energy harvesting function for collecting tube nut temperature data. Leakage current sensor (2), the leakage current sensor (2) is mounted on the mounting bracket (20) and snapped onto the sheath grounding wire (7), the leakage current sensor (2) is used to capture the leakage current information of the tube bus; Collector (3), the collector (3) is installed on the wall and is communicatively connected to the wireless temperature sensor (1) and the leakage current sensor (2) respectively. The collector (3) is used to receive the data sent by the wireless temperature sensor (1) and the leakage current sensor (2) and perform preliminary processing. The monitoring terminal (4) is communicatively connected to the collector (3).

2. The tubular busbar condition monitoring device according to claim 1, characterized in that, The mounting bracket (20) includes a column (201), a triangular support frame (202) mounted on the column (201), and a mounting plate (203) mounted on the triangular support frame (202). The leakage current sensor (2) is mounted on the mounting plate (203).

3. The tubular busbar condition monitoring device according to claim 1, characterized in that, The leakage current sensor (2) uses three energy harvesting transformers, and each energy harvesting transformer is independent of the others. Each energy harvesting transformer is equipped with a separate power supply module, measurement module and communication module.

4. The tubular busbar condition monitoring device according to claim 3, characterized in that, The open current transformer used for measurement in the leakage current sensor (2) is snapped onto the sheath grounding wire (7).

5. The tubular busbar condition monitoring device according to claim 1, characterized in that, The collector (3) is connected to the existing remote monitoring terminal (4).

6. The tubular busbar condition monitoring device according to claim 1, characterized in that, The collector (3) is also communicatively connected to the local display unit (5).

7. The tubular busbar condition monitoring device according to claim 6, characterized in that, The on-site display unit (5) is a display screen.

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