CN104991133A - CR imaging-based GIS visualized nondestructive test method - Google Patents
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Abstract
一种基于CR成像的GIS可视化无损检测方法，包括如下步骤：A.对GIS设备进行局放检测，将检测到的局放数据进行分析，确定缺陷大致位置；B.将CR胶片固定在检测出缺陷的GIS罐体上，利用X射线发射机，对局放出现异常的区域照射X射线投影于CR胶片上；C.将经过X射线照射的CR胶片放置在CR扫描仪中，并与电脑相连，将胶片上的数据读入电脑中，形成可视化图像；D.分析结果，确定GIS设备缺陷的位置及其性质。本发明可以确定GIS设备内部是否存在缺陷以及何种缺陷，同时直观地确定和识别出GIS设备内部缺陷的位置。
A GIS visual non-destructive testing method based on CR imaging, including the following steps: A. Perform partial discharge detection on GIS equipment, analyze the detected partial discharge data, and determine the approximate position of the defect; B. Fix the CR film on the detected On the defective GIS tank, use an X-ray transmitter to project X-rays on the area where the partial discharge is abnormal and project them on the CR film; C. Place the CR film irradiated by X-rays in the CR scanner and connect it to the computer , read the data on the film into the computer to form a visual image; D. Analyze the results to determine the location and nature of the GIS equipment defects. The invention can determine whether there is a defect inside the GIS equipment and what kind of defect, and at the same time visually determine and identify the position of the defect inside the GIS equipment.
Description
技术领域technical field
本发明涉及电力设备内部缺陷检测方法技术领域，尤其涉及一种基于CR成像的GIS可视化无损检测方法。The invention relates to the technical field of detection methods for internal defects of power equipment, in particular to a GIS visual nondestructive detection method based on CR imaging.
背景技术Background technique
GIS(Gas Insulated Switchgear)，指的是“气体绝缘金属封闭开关设备”，它将一座变电站中除变压器以外的一次设备，包括断路器、隔离开关、接地开关、电压互感器、电流互感器、避雷器、母线、电缆终端、进出线套管等，有机地组合成一个整体。GIS因其明显的优点被广大变电系统所采用，它以紧凑的布置、全封闭的带电体使得变电站占地面积大大减小。GIS (Gas Insulated Switchgear), refers to "gas-insulated metal-enclosed switchgear", which includes primary equipment other than transformers in a substation, including circuit breakers, disconnectors, grounding switches, voltage transformers, current transformers, and arresters , bus bar, cable terminal, inlet and outlet casing, etc., are organically combined into a whole. GIS is adopted by many substation systems because of its obvious advantages. It greatly reduces the floor area of substations with its compact layout and fully enclosed electrified body.
但近年来，电网的电压等级和装机容量不断增加，GIS设备的故障率也渐渐增加。检修发生故障的全封闭的GIS设备极其困难，停电检修在时间和金钱上会造成惊人的损失，因此，GIS设备的稳定运行对于电力行业的稳定运行乃至对居民稳定的电力供应有着十分重要的意义。However, in recent years, the voltage level and installed capacity of the power grid have continued to increase, and the failure rate of GIS equipment has also gradually increased. It is extremely difficult to repair the fully enclosed GIS equipment that has failed, and the maintenance of a power outage will cause an astonishing loss in time and money. Therefore, the stable operation of GIS equipment is of great significance to the stable operation of the power industry and even to the stable power supply of residents .
近年来，X射线无损检测技术在电力设备内部缺陷探伤有着独特的优势，作为无损检测家族中最年轻的技术，它有着快速、准确、直观的优势，推动着无损检测快速发展，X射线无损检测技术可以在不拆卸设备、不停电的情况下对GIS内部进行探伤试验，并直观的看出设备是否异常。针对GIS设备紧凑、密闭的特点，X射线无损检测可以直观的对GIS设备的部件松落、脱落、变形等缺陷进行判断，及时发现GIS设备中的缺陷，可以将损失降低到最小。In recent years, X-ray non-destructive testing technology has unique advantages in the internal defect detection of power equipment. As the youngest technology in the non-destructive testing family, it has the advantages of fast, accurate and intuitive, which promotes the rapid development of non-destructive testing. X-ray non-destructive testing The technology can conduct flaw detection test on the inside of GIS without dismantling the equipment and power off, and intuitively see whether the equipment is abnormal. In view of the compact and airtight characteristics of GIS equipment, X-ray non-destructive testing can intuitively judge the defects of GIS equipment such as loose parts, falling off, deformation, etc., and find defects in GIS equipment in time to minimize the loss.
发明内容Contents of the invention
本发明目的是为了确定GIS设备内部是否存在缺陷以及何种缺陷，同时直观地确定和识别出GIS设备内部缺陷的位置，提出一种基于CR成像的GIS可视化无损检测方法。The purpose of the present invention is to determine whether and what kind of defects exist in the GIS equipment, and at the same time intuitively determine and identify the position of the internal defects of the GIS equipment, and propose a GIS visual non-destructive testing method based on CR imaging.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
一种基于CR成像的GIS可视化无损检测方法，包括如下步骤：A GIS visual nondestructive testing method based on CR imaging, comprising the steps of:
A.对GIS设备进行局放检测，将检测到的局放数据进行分析，确定缺陷大致位置；A. Perform partial discharge detection on GIS equipment, analyze the detected partial discharge data, and determine the approximate location of the defect;
B.将CR胶片固定在检测出缺陷的GIS罐体上，利用X射线发射机，对局放出现异常的区域照射X射线投影于CR胶片上；B. Fix the CR film on the GIS tank body where the defect is detected, and use the X-ray transmitter to irradiate the abnormal area of the partial discharge with X-ray projection on the CR film;
C.将经过X射线照射的CR胶片放置在CR扫描仪中，并与电脑相连，将胶片上的数据读入电脑中，形成可视化图像；C. Place the CR film irradiated by X-rays in the CR scanner and connect it to the computer, and read the data on the film into the computer to form a visualized image;
D.分析结果，确定GIS设备缺陷的位置及其性质。D. Analyze the results to determine the location and nature of GIS equipment defects.
本发明所述步骤A采用超声波检测法。The step A of the present invention adopts ultrasonic detection method.
本发明所述步骤B是指将X射线透照GIS罐体缺陷部位，并投射到CR胶片上进行成像。The step B of the present invention refers to transilluminating the defective parts of the GIS tank body with X-rays and projecting them onto the CR film for imaging.
本发明所述步骤B的具体步骤为：The concrete steps of step B of the present invention are:
B1.在GIS设备局放异常位置一侧放置CR胶片，由于胶片重量很轻，粘贴或悬挂均可；另一侧放置X射线发射机，将X射线发射机的X射线发射口的中心对准GIS设备局放异常位置，保持CR胶片中心、脉冲X射线机的发射口中心和GIS设备局放异常位置在一条直线上；B1. Place a CR film on one side of the abnormal partial discharge position of the GIS equipment. Since the film is light in weight, it can be pasted or hung; place an X-ray transmitter on the other side, and align the center of the X-ray emission port of the X-ray transmitter For the abnormal partial discharge position of the GIS equipment, keep the center of the CR film, the center of the emission port of the pulse X-ray machine, and the abnormal partial discharge position of the GIS equipment on a straight line;
B2.将X射线发射机与远程控制装置相连接，将CR扫描仪与移动工作站相连接；B2. Connect the X-ray transmitter with the remote control device, and connect the CR scanner with the mobile workstation;
B3.通过远程控制装置设定系统参数后，按下远程控制装置上的射线启动按钮，对GIS设备内部局放异常位置进行无损检测，并在CR胶片上成像；B3. After setting the system parameters through the remote control device, press the ray start button on the remote control device to perform non-destructive testing on the abnormal position of partial discharge inside the GIS equipment, and image it on the CR film;
B4.如图像不清晰，调整CR胶片或X射线机的位置，并重复步骤Bl、B4、B5，透照不同部位。B4. If the image is not clear, adjust the position of the CR film or X-ray machine, and repeat steps B1, B4, and B5 to transilluminate different parts.
本发明的有益效果是：在针对GIS设备应用X射线进行无损检测时，能够实现对GIS设备内部缺陷位置和性质的可视化识别，大大减少了电力系统工作人员对GIS设备缺陷检测的盲目性，提高了GIS设备内部缺陷检测和诊断的科学性、高效性和准确性。The beneficial effects of the present invention are: when applying X-rays to GIS equipment for non-destructive testing, it is possible to realize the visual recognition of the location and nature of defects inside the GIS equipment, greatly reducing the blindness of the power system staff in the detection of GIS equipment defects, and improving It improves the scientificity, efficiency and accuracy of GIS equipment internal defect detection and diagnosis.
附图说明Description of drawings
图1为一种基于CR成像的GIS可视化无损检测方法流程图；Fig. 1 is a flow chart of a GIS visual nondestructive testing method based on CR imaging;
图2为一种基于CR成像的GIS可视化无损检测示意图；Fig. 2 is a schematic diagram of GIS visual non-destructive testing based on CR imaging;
图3和图4为CR扫描仪示意图。Figure 3 and Figure 4 are schematic diagrams of the CR scanner.
图中，1.CR胶片 2.CR数字扫描仪 3.控制按钮 4.液晶显示屏 5.电源开关 6.USB接口 7.电源线插口 8.GIS罐体 9.X射线发射机。In the figure, 1.CR film 2.CR digital scanner 3.Control button 4.LCD display 5.Power switch 6.USB interface 7.Power cord socket 8.GIS tank 9.X-ray transmitter.
具体实施方式Detailed ways
见图1，图2，图3，图4，一种基于CR成像的GIS可视化无损检测方法，包括如下步骤：See Figure 1, Figure 2, Figure 3, Figure 4, a GIS visual nondestructive testing method based on CR imaging, including the following steps:
A.对GIS设备进行局放检测，将检测到的局放数据进行分析，确定缺陷大致位置；A. Perform partial discharge detection on GIS equipment, analyze the detected partial discharge data, and determine the approximate location of the defect;
B.将CR胶片1固定在检测出缺陷的GIS罐体8上，利用X射线发射机9，对局放出现异常的区域照射X射线投影于CR胶片1上；B. Fix the CR film 1 on the GIS tank body 8 where the defect has been detected, and use the X-ray transmitter 9 to project the X-rays on the CR film 1 in the area where the partial discharge is abnormal;
C.将经过X射线照射的CR胶片1放置在CR扫描仪2中，将CR扫描仪并与电脑相连，将胶片上的数据读入电脑中，形成可视化图像；C. Place the CR film 1 irradiated by X-rays in the CR scanner 2, connect the CR scanner to the computer, read the data on the film into the computer, and form a visualized image;
D.分析结果，确定GIS设备缺陷的位置及其性质。D. Analyze the results to determine the location and nature of GIS equipment defects.
所述步骤A采用超声波检测法。Said step A adopts ultrasonic detection method.
所述步骤B是指将X射线透照GIS罐体缺陷部位，并投射到CR胶片上进行成像。The step B refers to transilluminating the defective parts of the GIS tank body with X-rays and projecting them onto the CR film for imaging.
所述步骤B的具体步骤如下：The concrete steps of described step B are as follows:
B1.在GIS设备局放异常位置一侧放置CR胶片，由于胶片重量很轻，粘贴或悬挂均可；另一侧放置X射线发射机，将X射线发射机的X射线发射口的中心对准GIS设备局放异常位置，保持CR胶片中心、脉冲X射线机的发射口中心和GIS设备局放异常位置在一条直线上；B1. Place a CR film on one side of the abnormal partial discharge position of the GIS equipment. Since the film is light in weight, it can be pasted or hung; place an X-ray transmitter on the other side, and align the center of the X-ray emission port of the X-ray transmitter For the abnormal partial discharge position of the GIS equipment, keep the center of the CR film, the center of the emission port of the pulse X-ray machine and the abnormal partial discharge position of the GIS equipment on a straight line;
B2.将X射线发射机与远程控制装置相连接，将CR扫描仪与移动工作站相连接；B2. Connect the X-ray transmitter with the remote control device, and connect the CR scanner with the mobile workstation;
B3.通过远程控制装置设定系统参数后，按下远程控制装置上的射线控制按钮4，对GIS设备内部局放异常位置进行无损检测，并在CR胶片上成像；B3. After setting the system parameters through the remote control device, press the ray control button 4 on the remote control device to perform non-destructive testing on the abnormal position of partial discharge inside the GIS equipment, and image it on the CR film;
B4.如图像不清晰，调整CR胶片或X射线机的位置，并重复步骤Bl、B4、B5，透照不同部位。B4. If the image is not clear, adjust the position of the CR film or X-ray machine, and repeat steps B1, B4, and B5 to transilluminate different parts.
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| CN105866146A (en) * | 2016-06-15 | 2016-08-17 | 国网福建省电力有限公司 | Device and method for quickly discriminating dry-type transformer windings based on power-frequency CR detection |
| CN105866147A (en) * | 2016-06-15 | 2016-08-17 | 国网福建省电力有限公司 | Device and method for quickly discriminating dry-type transformer windings based on pulse CR detection |
| CN106153652A (en) * | 2016-08-30 | 2016-11-23 | 韩国栋 | A kind of method applying X-ray transmission technology for detection power equipment joint |
| CN106442579A (en) * | 2016-09-08 | 2017-02-22 | 国网河南省电力公司电力科学研究院 | Method for detecting on-site three-dimensional imaging of GIS center conductive member |
| CN109254085A (en) * | 2018-11-07 | 2019-01-22 | 国网四川省电力公司成都供电公司 | A kind of probe sticking machine for eminence GIS ultrasonic test |
| CN109459451A (en) * | 2018-12-13 | 2019-03-12 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of metal inside testing of small cracks method based on ray contrast |
| CN109668913A (en) * | 2018-11-30 | 2019-04-23 | 贵州电网有限责任公司 | It is opened using digital radial measurement GIS device breaker away from the method for judging transmission system quality of connection |
| CN109781751A (en) * | 2019-01-08 | 2019-05-21 | 国网浙江省电力有限公司宁波供电公司 | Underground cable pulse X-ray digital imaging detection device and detection technology |
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| CN109668913A (en) * | 2018-11-30 | 2019-04-23 | 贵州电网有限责任公司 | It is opened using digital radial measurement GIS device breaker away from the method for judging transmission system quality of connection |
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Application publication date: 20151021 |