GIS bus internal discharge point positioning method, device and equipment and storage medium

Abstract

The invention provides a GIS bus internal discharge point positioning method, device and equipment and a storage medium. The method comprises the steps that an arc-shaped phased array probe ring is installed on the outer wall of a GIS bus barrel, the ring is filled with purified water flowing in real time, and the ring is driven by a motor to move in the axial direction; the probe synchronously emits phased array ultrasonic waves and receives inner wall reflection signals, the thickness of the barrel is calculated in real time, and a discharge point is positioned according to the thinning or thickening degree of the barrel. The technology depends on an ultrasonic phased array, nondestructive and rapid detection is achieved, an accurate basis is provided for first-aid repair, the efficiency is remarkably improved, the power failure duration is shortened, and economic losses are reduced.

Description

Technical Field

[0001] The present application belongs to the field of GIS bus detection, and in particular, relates to a method, device, equipment and storage medium for locating discharge points inside a GIS bus. Background Art

[0002] As a key component in the gas-insulated metal-enclosed switchgear (GIS), GIS busbar is used to collect and transmit electric energy. Its operation stability and safety are crucial to the power system. GIS busbar is widely used in power systems due to its stable operation, small footprint, high safety and low cleaning requirements.

[0003] During the operation of the GIS busbar, arc discharge faults may occur due to various reasons such as the presence of metal foreign matter on the inner wall of the cylinder. These faults will cause arc erosion on the inner wall of the cylinder to produce pits or metal melt adhesion, resulting in thinning or thickening of the cylinder, thereby affecting the safe operation of the busbar.

[0004] Currently, there is a lack of means to accurately locate the discharge points inside the GIS busbar, which results in prolonged fault repair time and reduced repair efficiency. Summary of the invention

[0005] The purpose of this application is to overcome the problems existing in the above-mentioned prior art and to provide a method, device, equipment and storage medium for locating the internal discharge point of a GIS busbar.

[0006] The present application provides a method for locating discharge points inside a GIS busbar, comprising:

[0007] The arc phased array probe ring is arranged on the outer wall of the GIS busbar cylinder, so that the space between each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder is filled with real-time flowing pure water;

[0008] Connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder through the motor;

[0009] All the probes synchronously transmit phased array ultrasonic signals according to the set time delay and receive echo signals reflected from the inner wall of the cylinder;

[0010] According to the echo signal, the thickness between the inner and outer walls of the cylinder at each measuring point is determined in real time;

[0011] The position of the discharge point inside the GIS busbar is determined according to the thickness between the inner and outer walls of the cylinder.

[0012] Optionally, the arc-shaped phased array probe ring is an arc-shaped structure with 33 channels and 64 array elements.

[0013] Optionally, according to the echo signal, the thickness between the inner and outer walls of the cylinder at each measuring point is determined in real time, including:

[0014] The thickness between the inner and outer walls of the cylinder at each measuring point is displayed in real time by the display host, and different colors are used to mark the thinning or thickening areas.

[0015] Optionally, the display host includes:

[0016] It is determined whether there is a discharge point inside the GIS busbar according to the thickness between the inner and outer walls.

[0017] Optionally, the pure water flow rate is regulated by the display host to ensure the coupling effect.

[0018] Optionally, all the probes synchronously transmit phased array ultrasonic signals according to a set time delay, including: adjusting the focus point and azimuth of the ultrasonic beam to meet the internal detection requirements of GIS busbars of different shapes and positions.

[0019] Optionally, the position of the discharge point inside the GIS busbar is determined according to the thickness between the inner and outer walls of the cylinder, including: triggering an alarm signal when the discharge point is detected inside the GIS busbar.

[0020] The present application also provides a GIS bus internal discharge point positioning device, comprising:

[0021] Install the module, set the arc phased array probe ring on the outer wall of the GIS busbar cylinder, so that each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder are filled with real-time flowing pure water;

[0022] A moving module connects the arc phased array probe ring to a motor, and drives the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder through the motor;

[0023] The detection module, all the probes synchronously transmit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the cylinder;

[0024] A thickness module, which determines the thickness between the inner and outer walls of the cylinder at each measuring point in real time according to the echo signal;

[0025] The defect module determines the position of the discharge point inside the GIS busbar according to the thickness between the inner and outer walls of the cylinder.

[0026] The present application also provides a GIS bus internal discharge point positioning device, comprising:

[0027] Memory;

[0028] A processor is used to retrieve the computer executable program of the above-mentioned method for locating the internal discharge point of the GIS bus from the memory, and is used to execute: setting an arc phased array probe ring on the outer wall of the GIS bus barrel, so that each probe on the arc phased array probe ring and the outer wall of the GIS bus barrel are filled with real-time flowing pure water; connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring along the axial direction of the outer wall of the GIS bus barrel through the motor; all the probes synchronously emit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the barrel; according to the echo signals, the thickness between the inner and outer walls of the barrel at each measuring point is determined in real time; and the position of the internal discharge point of the GIS bus is determined according to the thickness between the inner and outer walls of the barrel.

[0029] The present application also provides a storage medium, comprising a computer executable program stored therein, wherein the computer executable program is used to be called by a processor to execute the steps of the above-mentioned method for locating the internal discharge point of the GIS bus.

[0030] The beneficial effects of this application are:

[0031] The present application provides a method for locating discharge points inside a GIS busbar, including: setting an arc phased array probe ring on the outer wall of the GIS busbar cylinder, so that each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder are filled with real-time flowing pure water; connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder through the motor; all the probes synchronously emit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the cylinder; according to the echo signal, the thickness between the inner and outer walls of the cylinder at each measuring point is determined in real time; according to the thickness between the inner and outer walls of the cylinder, the position of the discharge point inside the GIS busbar is determined. The present application uses ultrasonic phased array detection technology to achieve non-destructive and rapid detection and positioning of internal discharge points by measuring the thickness of the cylinder after discharge occurs inside the GIS busbar. It provides a decision-making basis for on-site fault repair work, improves repair efficiency, and reduces power outage time and economic losses caused by faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the flow of locating the internal discharge point of the GIS busbar in this application;

[0033] Figure 2 Schematic diagram of the channel phased array probe ring in this application. DETAILED DESCRIPTION

[0034] The present application is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present application and implement it.

[0035] The present application provides a method for locating discharge points inside a GIS busbar, the method comprising the following steps:

[0036] S101, setting an arc phased array probe ring on the outer wall of the GIS busbar cylinder, so that each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder are filled with real-time flowing pure water.

[0037] like Figure 2 As shown, the phased array probe ring is designed as an arc probe ring with a specific number of channels and array elements, specifically an arc structure with 33 channels and 64 array elements. This design allows the inner arc of the arc probe to perfectly match the outer wall of the GIS busbar cylinder, ensuring that the probe and the cylinder can maintain stable contact and coupling effects during the detection process. The phased array probe is composed of a number of piezoelectric ceramic chips, which are arranged in an array according to a specific combination. Each chip can independently and synchronously transmit and receive ultrasonic signals, thereby realizing multi-point simultaneous detection inside the GIS busbar.

[0038] First, the designed 33-channel 64-element arc-shaped phased array probe ring needs to be accurately placed on the outer wall of the GIS busbar cylinder. The special design of this arc-shaped probe ring ensures that its inner arc can perfectly fit the outer wall of the GIS busbar cylinder without gap contact, which is crucial for the transmission of ultrasonic signals.

[0039] Next, you need to turn on the pure water coupling medium supply switch to evenly fill the space between each probe of the arc phased array probe ring and the outer wall of the GIS busbar cylinder with pure water. As a coupling medium, the main function of pure water is to eliminate the air gap between the probe and the outer wall of the cylinder, which will hinder the effective propagation of ultrasonic waves. The filling of pure water ensures that the ultrasonic wave can be smoothly emitted from the probe, pass through the coupling layer, and finally reach the inner wall of the GIS busbar cylinder for reflection, and then be received by the probe.

[0040] In this process, the purity and fluidity of pure water are very important, which directly affect the propagation efficiency of ultrasonic waves and the accuracy of test results. Therefore, in actual operation, it is necessary to ensure the freshness and fluidity of pure water, and regularly check and replace the coupling medium to ensure the detection effect. A good acoustic coupling environment is formed between the arc phased array probe ring and the outer wall of the GIS busbar cylinder, laying a solid foundation for the subsequent transmission, reception and data analysis of ultrasonic signals.

[0041] S102, connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder through the motor.

[0042] In this step, in order to ensure the comprehensive detection of the discharge points inside the GIS busbar, the arc phased array probe ring is cleverly designed to be connected to the motor. The motor acts as a power source, and through its driving action, the roller rolls on the outer wall of the GIS busbar cylinder, thereby driving the entire arc phased array probe ring to move along the axial direction of the busbar cylinder.

[0043] Specifically, the roller is tightly fixed to the probe ring, and the rotational force of the motor is transmitted to the probe ring through the roller, so that it can move stably and smoothly along the outer wall of the busbar barrel. This design not only ensures that the probe ring can cover the entire detection area of ​​the busbar barrel, avoiding detection blind spots, but also makes the detection process more automated and efficient.

[0044] In addition, the moving speed is adjustable and controlled by the program in the display host. According to different detection requirements and GIS bus specifications, operators can flexibly set the moving speed to ensure the accuracy and comprehensiveness of the detection. In this way, the detection efficiency has been significantly improved, and it also provides more reliable technical support for on-site fault repair work.

[0045] S103, all the probes synchronously transmit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the cylinder;

[0046] When the arc-shaped phased array probe ring is driven by a motor to move axially along the outer wall of the GIS busbar, all probes will synchronously transmit phased array ultrasonic signals according to the pre-set time delay (delay) parameters. This synchronous transmission process is key because it ensures the effective implementation of phased array technology and can form accurate beams and scan images.

[0047] Specifically, each probe consists of multiple piezoelectric ceramic chips, which can be excited in sequence according to a specific time difference, thereby forming a highly directional and controllably focused ultrasonic beam in space. This ultrasonic beam penetrates the wall thickness of the GIS busbar cylinder and reaches the inner wall of the cylinder. If there are defects caused by discharge on the inner wall of the cylinder (such as ablation pits or metal melt accumulation), the ultrasonic beam will be reflected at these locations to form an echo signal.

[0048] The echo signal is then received by each probe and converted into an electrical signal for transmission to the display host. In the display host, the received echo signal can be analyzed and processed through advanced signal processing algorithms to extract information about the inner wall defects of the cylinder, such as location, size and nature.

[0049] In this way, by utilizing the synchronous transmission and reception functions of the phased array probe, comprehensive and non-destructive testing of the inner wall of the GIS busbar can be achieved, the discharge point can be accurately located, and reliable data support can be provided for subsequent fault repair work.

[0050] S104. Determine in real time the thickness between the inner and outer walls of the cylinder at each measuring point according to the echo signal.

[0051] As the phased array probe ring moves along the outer wall of the GIS busbar cylinder, each probe will synchronously transmit phased array ultrasonic signals according to the preset delay parameters and receive echo signals reflected from the inner wall of the cylinder. These echo signals carry important information about the state of the inner wall of the cylinder.

[0052] After the display host receives the echo signal, it will immediately process and analyze the signal. The processing process is mainly based on the propagation principle of ultrasound, that is, the propagation speed of ultrasound in the material, the time difference between the transmitted signal and the echo signal, and the signal strength and other parameters to infer the thickness of the inner wall of the cylinder at each measuring point. Through precise calculation, the system can draw a thickness distribution map of the inner wall of the cylinder in real time.

[0053] S105. Determine the position of the discharge point inside the GIS busbar according to the thickness between the inner and outer walls of the cylinder.

[0054] After obtaining the thickness distribution map of the inner wall of the cylinder, the system will automatically compare the thickness changes at each point. Discharge inside the GIS busbar usually causes significant changes in the thickness between the inner and outer walls of the cylinder, such as thinning caused by ablation or thickening caused by metal melt accumulation. Therefore, the system can quickly identify the possible discharge point location based on these thickness changes.

[0055] Once the location of the discharge point is determined, the system will mark it on the display screen in a striking manner (such as using different colors or highlighting) for the operator's reference. In this way, the repair personnel can quickly locate the fault point and take appropriate measures to repair it, thereby greatly improving the efficiency and safety of the repair. The entire process realizes the non-destructive and rapid detection and positioning of the discharge point inside the GIS busbar, providing important technical support for on-site fault repair work.

Claims

1. A method for locating discharge points inside a GIS busbar, characterized in that: include: The arc phased array probe ring is arranged on the outer wall of the GIS busbar cylinder, so that the space between each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder is filled with real-time flowing pure water; Connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder by the motor; All the probes synchronously transmit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the GI S busbar cylinder; According to the echo signal, the thickness between the inner and outer walls of the GIS busbar cylinder at each measuring point is determined in real time; The position of the discharge point inside the GIS busbar is determined according to the thickness between the inner and outer walls.

2. The method for locating discharge points inside a GIS busbar according to claim 1, characterized in that: The arc-shaped phased array probe ring is an arc-shaped structure with 33 channels and 64 array elements.

3. The method for locating discharge points inside a GIS busbar according to claim 1, characterized in that: According to the echo signal, the thickness between the inner and outer walls of the cylinder at each measuring point is determined in real time, including: The thickness between the inner and outer walls of the cylinder at each measuring point is displayed in real time through the host computer, and different colors are used to mark the thinning or thickening areas.

4. The method for locating discharge points inside a GIS busbar according to claim 3, characterized in that: The display host is used to determine whether there is a discharge point inside the GIS busbar according to the thickness between the inner and outer walls.

5. The method for locating discharge points inside a GIS busbar according to claim 3, characterized in that: The flow rate of the pure water is regulated by the display host to ensure the coupling effect.

6. The method for locating discharge points inside a GIS busbar according to claim 1, characterized in that: All the probes synchronously transmit phased array ultrasonic signals according to the set time delay, including: adjusting the focus point and the azimuth of the ultrasonic beam to meet the internal detection requirements of GIS busbars of different shapes and positions.

7. The method for locating discharge points inside a GIS busbar according to claim 1, characterized in that: The position of the discharge point inside the GIS busbar is determined according to the thickness between the inner and outer walls of the cylinder, including: when the discharge point is detected inside the GIS busbar, an alarm signal is triggered to alarm.

8. A GIS bus internal discharge point positioning device, characterized in that: include: Install the module, set the arc phased array probe ring on the outer wall of the GIS busbar cylinder, so that each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder are filled with real-time flowing pure water; A moving module connects the arc phased array probe ring to a motor, and drives the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder through the motor; The detection module, all the probes synchronously transmit phased array ultrasonic signals according to the set time delay, and receive echo signals reflected from the inner wall of the cylinder; A thickness module, which determines the thickness between the inner and outer walls of the cylinder at each measuring point in real time according to the echo signal; The defect module determines the position of the discharge point inside the GIS busbar according to the thickness between the inner and outer walls of the cylinder.

9. A GIS bus internal discharge point positioning device, characterized in that: include: Memory; A processor, for retrieving from the memory a computer executable program of the method for locating the internal discharge point of a GIS busbar according to any one of claims 1 to 7, for executing: setting an arc phased array probe ring on the outer wall of a GIS busbar cylinder, so that each probe on the arc phased array probe ring and the outer wall of the GIS busbar cylinder are filled with real-time flowing pure water; connecting the arc phased array probe ring to a motor, and driving the arc phased array probe ring to move axially along the outer wall of the GIS busbar cylinder by the motor; all the probes synchronously transmit phased array ultrasonic signals according to a set time delay, and receive echo signals reflected from the inner wall of the cylinder; determining in real time the thickness between the inner and outer walls of the cylinder at each measuring point according to the echo signals; and determining the position of the internal discharge point of the GIS busbar according to the thickness between the inner and outer walls of the cylinder.

10. A storage medium, characterized in that: The invention comprises a computer executable program stored therein, wherein the computer executable program is used to be called by a processor to execute the steps of the method for locating the internal discharge point of a GIS busbar as claimed in any one of claims 1 to 7.

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