CN116184140A - A multifunctional single sensor suitable for GIS equipment defect detection - Google Patents
A multifunctional single sensor suitable for GIS equipment defect detectionDownload PDFInfo
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- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
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Abstract
Description
Translated fromChinese技术领域technical field
本发明涉及电力设备缺陷检测技术领域，尤其涉及一种适用于GIS设备缺陷检测用多功能单体传感器。The invention relates to the technical field of electric equipment defect detection, in particular to a multifunctional single sensor suitable for GIS equipment defect detection.
背景技术Background technique
随着电网技术的飞速发展，电网规模的不断扩大，供电可靠性的要求也不断提高，长期运行的GIS电力设备无法避免的产生放电型缺陷和机械型缺陷，放电型缺陷导致电力设备绝缘介质劣化，长期的放电会导致绝缘介质不断受损，绝缘性能降低，并可能诱发设备绝缘击穿，对绝缘介质造成不可逆转的破坏，严重影响GIS设备的安全稳定运行，机械型型缺陷主要是GIS内部开关触头接触异常，母线卡簧松动，长期振动甚至可能会导致导电杆和绝缘件松动，引发局部放电，给电网造成巨大的损失。With the rapid development of power grid technology, the scale of the power grid continues to expand, and the requirements for power supply reliability continue to increase. Long-term operation of GIS power equipment cannot avoid the occurrence of discharge-type defects and mechanical defects. Discharge-type defects lead to deterioration of the insulation medium of power equipment. , long-term discharge will lead to continuous damage to the insulating medium, reduced insulation performance, and may induce equipment insulation breakdown, causing irreversible damage to the insulating medium, seriously affecting the safe and stable operation of GIS equipment. Mechanical defects are mainly in the interior of GIS Abnormal contact of switch contacts, loosening of bus bar springs, long-term vibration may even lead to loosening of conductive rods and insulating parts, causing partial discharge and causing huge losses to the power grid.
GIS在发生放电时会产生多种特征信号，对于其特征信号的检测有多种方法，其中包括特高频法、超声波法、脉冲电流法、光测法，以及联合检测法等。其中特高频信号和超声波信号的检测是局部放电现场检测中最常见的检测方法，但是目前常用于检测的传感器功能单一，即超声传感器只能检测超声波信号，特高频传感器只能检测特高频信号，单一的检测方法对GIS局部放电中产生的多种信号检测灵敏度不足，可靠性低，而对于联合检测方法，由于现场信号干扰较多，判断单一传感器输出的单一信号是否为放电特征信号需要经过复杂的计算和分析，增加了实际操作的繁琐性和复杂程度。GIS在发生机械缺陷时会产生特征信号，其检测方法有多种，包括红外检测法、光纤光栅测温法以及振动检测法，其中振动检测法与设备主回路无电气连接，具有抗干扰能力强，灵敏度高等优点。并且用于GIS故障检测的传感器元件与GIS设备外壳声阻抗严重失配造成超声波能量大量损失。GIS will generate a variety of characteristic signals when the discharge occurs. There are many methods for detecting the characteristic signals, including UHF method, ultrasonic method, pulse current method, optical measurement method, and joint detection method. Among them, the detection of ultra-high frequency signals and ultrasonic signals is the most common detection method in the field detection of partial discharge. The single detection method has insufficient sensitivity and low reliability for the detection of multiple signals generated in GIS partial discharge, and for the joint detection method, due to the large amount of signal interference on the spot, it is difficult to judge whether the single signal output by a single sensor is a discharge characteristic signal Complicated calculation and analysis are required, which increases the complexity and complexity of the actual operation. GIS will generate characteristic signals when mechanical defects occur. There are many detection methods, including infrared detection method, fiber grating temperature measurement method and vibration detection method. The vibration detection method has no electrical connection with the main circuit of the equipment and has strong anti-interference ability. , high sensitivity and so on. Moreover, the acoustic impedance of the sensor element used for GIS fault detection and the shell of GIS equipment is seriously mismatched, resulting in a large loss of ultrasonic energy.
基于上述问题，本发明提出了一种适用于GIS设备放电型缺陷和机械型缺陷同时感知多功能单体传感器。Based on the above problems, the present invention proposes a multifunctional single sensor suitable for simultaneously sensing discharge-type defects and mechanical-type defects in GIS equipment.
发明内容Contents of the invention
本发明的目的在于针对GIS放电和机械缺陷简单、高可靠检测的现实需求提出了一种适用于GIS设备缺陷检测用的多功能单体传感器，通过单体传感器对超声、特高频信号的检测实现GIS放电型缺陷的检测，对振动特征信号的检测实现GIS机械型缺陷的检测，并通过其同时所输出的超声信号、特高频信号和振动信号之间的时间差，有效提高目前局部放电在线检测和机械振动监测的可靠性，通过阻抗匹配层的设计，有效降低局部放电在线检测产生的阻抗损失，使声能高效地在压电材料和GIS之间的传输，同时可以大幅度降低GIS设备缺陷检测的复杂程度。通过质量背衬层的设计，可以有效增大机械振动信号，提高机电转换效率，具有阻尼效应，同时可以有效吸收穿过压电材料的剩余超声波，减少回波干扰。The purpose of the present invention is to propose a multi-functional single sensor suitable for GIS equipment defect detection for the practical needs of simple and highly reliable detection of GIS discharge and mechanical defects, through which the single sensor can detect ultrasonic and UHF signals Realize the detection of GIS discharge type defects, and the detection of vibration characteristic signals to realize the detection of GIS mechanical defects, and through the time difference between the ultrasonic signal, UHF signal and vibration signal output at the same time, effectively improve the current partial discharge online The reliability of detection and mechanical vibration monitoring, through the design of the impedance matching layer, effectively reduces the impedance loss caused by the partial discharge on-line detection, so that the sound energy can be efficiently transmitted between the piezoelectric material and the GIS, and can greatly reduce the GIS equipment. The complexity of defect detection. Through the design of the mass backing layer, the mechanical vibration signal can be effectively increased, the electromechanical conversion efficiency can be improved, and it has a damping effect. At the same time, it can effectively absorb the remaining ultrasonic waves passing through the piezoelectric material and reduce echo interference.
为了实现上述目的，本发明具体采用了如下技术方案：In order to achieve the above object, the present invention specifically adopts the following technical solutions:
一种适用于GIS设备缺陷检测的多功能单体传感器，包括有传感器本体和法兰盘，所述传感器本体安装在法兰盘内表面上，所述传感器本体与法兰盘内表面之间敷设有绝缘胶布层，作为绝缘层；所述法兰盘通过连接螺栓固定连接在GIS设备壳体上；所述设置为四层式结构，自下而上依次为匹配层、压电陶瓷材料层、质量背衬层和金属电极材料层，所述金属电极材料层上还固定连接有信号线。A multifunctional single sensor suitable for GIS equipment defect detection, including a sensor body and a flange, the sensor body is installed on the inner surface of the flange, and the sensor body and the inner surface of the flange are laid There is an insulating tape layer as an insulating layer; the flange is fixedly connected to the GIS equipment shell through connecting bolts; the setting is a four-layer structure, which is a matching layer, a piezoelectric ceramic material layer, a quality backing layer and a metal electrode material layer, and signal lines are fixedly connected to the metal electrode material layer.
优选地，所述传感器本体安装于GIS设备的法兰盘的内表面，相较于市面上外置式一体化传感器，内置传感器可以接收到无法泄露到GIS设备外部的特高频信号。Preferably, the sensor body is installed on the inner surface of the flange of the GIS equipment. Compared with the external integrated sensor on the market, the built-in sensor can receive UHF signals that cannot be leaked to the outside of the GIS equipment.
优选地，所述金属电极材料层、质量背衬层和压电陶瓷材料层构成特高频信号感知单元；所述金属电极作为超声波信号感知的电信号输出电极，与所述质量背衬层和压电陶瓷共同构成超声波信号感知单元；所述金属电极作为振动信号感知的电信号输出电极，与所述质量背衬层和压电陶瓷共同构成振动信号感知单元。Preferably, the metal electrode material layer, the quality backing layer and the piezoelectric ceramic material layer constitute a UHF signal sensing unit; the metal electrode is used as an electrical signal output electrode for ultrasonic signal sensing, and is connected with the quality backing layer and the piezoelectric ceramic material layer. The piezoelectric ceramics jointly constitute an ultrasonic signal sensing unit; the metal electrode serves as an electrical signal output electrode for vibration signal sensing, and together with the mass backing layer and piezoelectric ceramics constitutes a vibration signal sensing unit.
优选地，所述压电陶瓷材料层感应的超声波信号和振动信号通过质量背衬层向金属电极材料层输出，所述通过金属电极材料层通过信号线向外输出；所述金属电极材料层感应的特高频信号通过信号线向外输出。Preferably, the ultrasonic signal and vibration signal induced by the piezoelectric ceramic material layer are output to the metal electrode material layer through the quality backing layer, and the metal electrode material layer is output through the signal line; the metal electrode material layer is induced The UHF signal is output through the signal line.
优选地，所述匹配层优选为钢制匹配层，所述钢制匹配层敷设法兰盘内表面和压电陶瓷材料层中间，可以减少信号传输的损耗；所述匹配层的结构为长方体，长为150～160mm，宽为100～110 mm，厚度为20～25 mm。Preferably, the matching layer is preferably a steel matching layer, and the steel matching layer is applied between the inner surface of the flange and the piezoelectric ceramic material layer, which can reduce the loss of signal transmission; the structure of the matching layer is a cuboid, The length is 150-160 mm, the width is 100-110 mm, and the thickness is 20-25 mm.
优选地，所述压电陶瓷材料层优选为PZT,所述压电陶瓷材料层的结构为圆形，半径为35～40 mm，厚度为0.8～1.0 mm。Preferably, the piezoelectric ceramic material layer is preferably PZT, and the piezoelectric ceramic material layer has a circular structure with a radius of 35-40 mm and a thickness of 0.8-1.0 mm.
优选地，所述质量背衬层优选为环氧树脂，所述质量背衬层的结构为圆形，半径与压电陶瓷材料层相同，厚度为1.0~2.0mm。Preferably, the quality backing layer is preferably epoxy resin, the structure of the quality backing layer is circular, the radius is the same as that of the piezoelectric ceramic material layer, and the thickness is 1.0-2.0 mm.
优选地，所述金属电极材料层优选为铜制金属电极，所述金属电极材料层的结构为叉指电极，所述叉指电极宽度和相邻插指电极间的空隙距离均为3 mm。Preferably, the metal electrode material layer is preferably a metal electrode made of copper, and the structure of the metal electrode material layer is an interdigital electrode, and the width of the interdigital electrode and the gap distance between adjacent interdigital electrodes are both 3 mm.
与现有技术相比，本发明提供了一种适用于GIS设备缺陷检测用单体多功能传感技术，具备以下有益效果：Compared with the prior art, the present invention provides a single multifunctional sensing technology suitable for GIS equipment defect detection, which has the following beneficial effects:
（1）本发明利用超声检测法和特高频检测法相结合，对GIS设备的放电型缺陷具有高灵敏度，高定位精度等优点，利用振动检测法，对GIS设备机械型缺陷检测具有抗干扰能力强、灵敏度高、安全可靠等优点，同时采用在单体传感器底部增加声阻抗匹配层，减少检测信号在传感器和GIS设备外壳中传播时的大量能量损耗。(1) The present invention uses the combination of ultrasonic detection method and ultra-high frequency detection method, which has the advantages of high sensitivity and high positioning accuracy for discharge-type defects of GIS equipment, and has anti-interference ability for the detection of mechanical-type defects of GIS equipment by using vibration detection method Strong, high sensitivity, safe and reliable, etc. At the same time, an acoustic impedance matching layer is added at the bottom of the single sensor to reduce a large amount of energy loss when the detection signal propagates in the sensor and GIS equipment shell.
（2）本发明采用在压电材料和金属电极中间增加质量背衬层，有效增大机械振动信号和超声信号对压电材料产生的形变，提高了机电转换效率，具有阻尼效应，同时有效吸收剩余超声波，减少超声信号反射造成的回波干扰。(2) The present invention uses a quality backing layer between the piezoelectric material and the metal electrode to effectively increase the deformation of the piezoelectric material caused by mechanical vibration signals and ultrasonic signals, improve the electromechanical conversion efficiency, have a damping effect, and effectively absorb Remaining ultrasonic waves, reducing echo interference caused by ultrasonic signal reflection.
（3）本发明解决了传统单一传感器只检测一种信号，检测精度不高，检测范围较小的问题，解决了多设备联合检测结构复杂，操作繁琐的问题，实现了对GIS设备放电产生的超声信号和特高频信号的同时感知，对GIS设备机械异响振动产生的振动信号的同时感知。(3) The present invention solves the problem that the traditional single sensor only detects one kind of signal, the detection accuracy is not high, and the detection range is small. Simultaneous perception of ultrasonic signals and UHF signals, simultaneous perception of vibration signals generated by mechanical abnormal noise vibration of GIS equipment.
（4）本发明原理简单，兼具了灵敏性和高效性，大幅降低了对GIS设备局部放电信号和机械振动信号的检测难度，提高了GIS设备检测的可靠性和高效性。(4) The principle of the present invention is simple, has both sensitivity and high efficiency, greatly reduces the difficulty of detecting partial discharge signals and mechanical vibration signals of GIS equipment, and improves the reliability and efficiency of GIS equipment detection.
附图说明Description of drawings
图1为本发明公开的一种适用于GIS设备缺陷检测用多功能单体传感器的结构示意图；Fig. 1 is a structural schematic diagram of a multifunctional single sensor suitable for GIS equipment defect detection disclosed by the present invention;
图2为本发明中传感器本体的结构示意图；Fig. 2 is the structural representation of sensor body in the present invention;
图3为本发明公开的一种适用于GIS设备的缺陷检测用多功能单体传感及时示例的正面剖视图。Fig. 3 is a front cross-sectional view of a real-time example of a multifunctional monomer sensor for defect detection suitable for GIS equipment disclosed by the present invention.
图中标号说明：Explanation of symbols in the figure:
1、传感器本体；2、法兰盘；3、绝缘胶布层；4、匹配层；5、压电陶瓷材料层；6、质量背衬层；7、金属电极材料层；8、信号线。1. Sensor body; 2. Flange; 3. Insulating tape layer; 4. Matching layer; 5. Piezoelectric ceramic material layer; 6. Quality backing layer; 7. Metal electrode material layer; 8. Signal line.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
本发明提出一种适用于GIS设备的缺陷检测用多功能单体传感器，用于实现单一传感器在GIS设备上对不同性质的特征信号的同时有效感知，单体传感器设计可以实现在电力现场对GIS设备放电缺陷产生的超声特征信号、特高频特征信号和机械缺陷所产生振动特征信号的有效灵敏感知，使得机械振动信号和超声波信号高效率转化，减少超声信号反射造成的回波干扰，同时使得声能高效的在单体传感器和GIS设备外壳之间传输，提高传感器的灵敏度，减少由于声阻抗不匹配造成的传感器输出信号失真。The present invention proposes a multi-functional single sensor for defect detection suitable for GIS equipment, which is used to realize the simultaneous effective perception of characteristic signals of different natures by a single sensor on GIS equipment. The effective and sensitive perception of ultrasonic characteristic signals, ultra-high frequency characteristic signals and vibration characteristic signals generated by mechanical defects generated by equipment discharge defects enables high-efficiency conversion of mechanical vibration signals and ultrasonic signals, reduces echo interference caused by ultrasonic signal reflection, and enables Acoustic energy is efficiently transmitted between the single sensor and the GIS equipment shell, which improves the sensitivity of the sensor and reduces the distortion of the sensor output signal caused by the mismatch of acoustic impedance.
本发明结合超声波法、特高频法和振动检测法检测技术，将多种检测方式、多种监测设备进行结合，形成一种多功能单体传感器，通过对传感器设计质量背衬层6提高超声波信号和机械振动信号的机电转化效率，同时吸收剩余超声波，减少回波干扰。通过对传感器设计声阻抗匹配层4降低能量在GIS设备和单体传感器之间的大量损失，同时通过对特征信号的检测，实现对GIS设备放电和机械缺陷情况及时、准确的检测。The present invention combines the detection technologies of ultrasonic method, ultra-high frequency method and vibration detection method, and combines various detection methods and various monitoring equipment to form a multifunctional single sensor, and improves the ultrasonic wave by designing the
本发明的设计原理为：GIS机械缺陷振动信号频率在50 Hz～2000 Hz，超声信号频率在20 kHz～200 kHz，特高频信号频率在0.3 GHz～3 GHz，GIS机械型缺陷和放电缺陷产生的信号频率相差3～9个数量级，信号频率的差异可以为单体传感器输出信号的分离提供技术支持，同时，根据输出信号频率的差异可以为单体传感器对不同缺陷类型的诊断提供技术支持。The design principle of the present invention is: GIS mechanical defect vibration signal frequency is 50 Hz to 2000 Hz, ultrasonic signal frequency is 20 kHz to 200 kHz, UHF signal frequency is 0.3 GHz to 3 GHz, GIS mechanical defect and discharge defect are generated The difference in signal frequency is 3 to 9 orders of magnitude. The difference in signal frequency can provide technical support for the separation of output signals of single sensors. At the same time, according to the difference in output signal frequency, it can provide technical support for the diagnosis of different defect types by single sensors.
本发明的安装方案为：将传感器本体1内置于法兰盘2的内表面，解决单体传感器外置于GIS金属外表面上特高频信号衰减快的缺陷。The installation scheme of the present invention is: the
下面结合附图及具体实例对本发明技术方案进行说明，具体内容如下。The technical solution of the present invention will be described below in conjunction with the accompanying drawings and specific examples, and the specific content is as follows.
实施例1：Example 1:
一种适用于GIS设备的缺陷检测用多功能单体传感器，可用于同时检测GIS设备放电型缺陷产生的超声信号、特高频信号和设备机械型缺陷产生的振动信号。传感器具有四层结构，底层选择钢制声阻抗匹配层贴敷在GIS设备外壳内表面，下层选择环氧树脂作为质量背衬层6，敷设在匹配层4上表面，上层选择压电陶瓷PZT作为介质基底，敷设在质量背衬层6上表面，顶层选择铜制金属电极，同样敷设在质量背衬层6上表面，信号线8从金属电极引出。A multifunctional single sensor suitable for defect detection of GIS equipment can be used to simultaneously detect ultrasonic signals, ultra-high frequency signals and vibration signals generated by mechanical defects of GIS equipment. The sensor has a four-layer structure. The bottom layer is made of steel acoustic impedance matching layer and pasted on the inner surface of the GIS equipment shell. The lower layer is made of epoxy resin as the
请参阅图1，在压电陶瓷材料层5基底上敷设质量背衬层6，质量背衬层6上敷设金属电极材料层7，并用信号线8相连，在压电陶瓷材料层5底部和四周敷设匹配层4，其中金属电极材料层7作为特高频电磁波感知单元感知特高频信号，压电陶瓷材料层5、质量背衬层6与金属电极材料层7作为超声感知单元感知超声波信号，同时作为机械振动感知单元感知振动信号，匹配层4作为两种介质中间的声阻抗过渡；GIS局部放电的特高频信号传到传感器本体1上，在压电陶瓷材料层5上敷设的金属电极材料层7对电磁波信号进行感知，再通过信号线8将特高频信号输出；GIS局部放电的超声波信号传播到压电陶瓷材料层5上，引起压电陶瓷的形变，通过质量背衬层6增大超声波信号引起的压电陶瓷材料层5的形变，同时减少剩余超声波信号反射造成的回波干扰，再通过金属电极将超声波信号输出；GIS机械振动产生的振动信号传播到压电陶瓷材料层5上，引起压电陶瓷的形变，通过质量背衬层6增大机械振动引起的压电陶瓷材料层5的形变，再通过金属电极将振动信号输出，最终由金属电极上的信号线8向外输出。Referring to Fig. 1, a quality backing layer 6 is laid on the base of the piezoelectric ceramic material layer 5, a metal electrode material layer 7 is laid on the quality backing layer 6, and connected with a signal line 8, at the bottom and around the piezoelectric ceramic material layer 5 The matching layer 4 is laid, wherein the metal electrode material layer 7 is used as a UHF electromagnetic wave sensing unit to perceive UHF signals, and the piezoelectric ceramic material layer 5, the quality backing layer 6 and the metal electrode material layer 7 are used as an ultrasonic sensing unit to sense ultrasonic signals, At the same time, as a mechanical vibration sensing unit to perceive vibration signals, the matching layer 4 is used as the acoustic impedance transition between the two media; the UHF signal of GIS partial discharge is transmitted to the sensor body 1, and the metal electrode laid on the piezoelectric ceramic material layer 5 The material layer 7 senses the electromagnetic wave signal, and then outputs the UHF signal through the signal line 8; the ultrasonic signal of the GIS partial discharge propagates to the piezoelectric ceramic material layer 5, causing deformation of the piezoelectric ceramic, and passes through the quality backing layer 6 Increase the deformation of the piezoelectric ceramic material layer 5 caused by the ultrasonic signal, reduce the echo interference caused by the reflection of the remaining ultrasonic signal, and then output the ultrasonic signal through the metal electrode; the vibration signal generated by the GIS mechanical vibration propagates to the piezoelectric ceramic material layer 5, the deformation of piezoelectric ceramics is caused, and the deformation of piezoelectric ceramic material layer 5 caused by mechanical vibration is increased through the mass backing layer 6, and then the vibration signal is output through the metal electrode, and finally the signal line 8 on the metal electrode is directed to external output.
请参阅图2-3，在GIS设备法兰盘2内表面上安装传感器本体1，传感器本体1与法兰盘2内表面中间敷设一层绝缘胶布层3作为绝缘层，使得传感器本体1和GIS设备金属外壳相互绝缘，在绝缘胶布层3上敷设匹配层4，在匹配层4中敷设压电陶瓷材料层5，在压电陶瓷材料层5上敷设质量背衬层6，质量背衬层6的长度为S，敷设在质量背衬层6上的金属电极材料层7长度为（0，S]，在金属电极材料层7上敷设信号线8。Please refer to Figure 2-3, the
上述所设计的适用于GIS设备的缺陷检测用多功能单体传感器，能够通过超声波信号、特高频信号和机械振动信号三种信号的不同频率，有效的实现超声波信号、特高频信号和机械振动信号的同时输出与缺陷检测，结合超声波法和特高频法的优点，有效解决了单一传感器不能同时输出两个信号，检测精度不够，检测范围不广，不能准确定位GIS局部放电位置等问题；结合机械振动法，有效实现了单一传感器同时进行放电检测和机械检测，对超声信号、特高频信号和振动信号的同时感知和输出，提高了GIS局部放电绝缘缺陷检测和机械缺陷检测的便捷性，降低了检修成本。The above-mentioned multifunctional monomer sensor for defect detection suitable for GIS equipment can effectively realize the ultrasonic signal, UHF signal and mechanical vibration signal through the different frequencies of the ultrasonic signal, UHF signal and mechanical vibration signal. Simultaneous output of vibration signals and defect detection, combined with the advantages of ultrasonic method and UHF method, effectively solves the problems that a single sensor cannot output two signals at the same time, the detection accuracy is not enough, the detection range is not wide, and the location of partial discharge in GIS cannot be accurately located. ;Combined with the mechanical vibration method, a single sensor can effectively realize discharge detection and mechanical detection at the same time, and simultaneously perceive and output ultrasonic signals, UHF signals and vibration signals, which improves the convenience of GIS partial discharge insulation defect detection and mechanical defect detection performance, reducing maintenance costs.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073702A1 (en)* | 2004-01-29 | 2005-08-11 | Kyushu Tlo Company, Limited | Decomposed gas sensor for gas-insulated apparatus, insulating gas decomposition detector, and decomposed gas detecting method |
| CN1926413A (en)* | 2004-10-18 | 2007-03-07 | 日本精工株式会社 | Abnormality diagnosis system for machinery |
| US20080169190A1 (en)* | 2007-01-12 | 2008-07-17 | Honeywell International Inc. | NOx gas sensor for automotive exhaust and air pollution monitoring |
| CN203811754U (en)* | 2014-02-24 | 2014-09-03 | 大连电力勘察设计院有限公司 | An enclosed type gas insulation combined electric appliance partial discharge detection device |
| CN106198724A (en)* | 2016-06-30 | 2016-12-07 | 重庆大学 | A kind of novel multistable ultrasound detection sensor |
| US20170234758A1 (en)* | 2016-02-03 | 2017-08-17 | State Grid Jiangsu Electric Power Company Nanjing Power Supply Company | GIS leak monitoring method based on vibration signal |
| CN113654583A (en)* | 2021-08-31 | 2021-11-16 | 西安交通大学 | Shear vibration-ultrasonic composite sensor and measuring device |
| CN113702685A (en)* | 2021-08-31 | 2021-11-26 | 西安交通大学 | Piezoelectric type ultrasonic-transient earth voltage composite sensor and measuring device |
| CN114002315A (en)* | 2021-11-03 | 2022-02-01 | 广东工业大学 | A multimode detection probe |
| CN114062870A (en)* | 2021-11-17 | 2022-02-18 | 华北电力大学 | A composite sensor for GIS partial discharge acousto-optical joint detection |
| CN114509651A (en)* | 2022-04-15 | 2022-05-17 | 湖北工业大学 | GIS partial discharge external ultrasonic and ultrahigh frequency integrated sensor and detection method |
| CN115586404A (en)* | 2022-09-28 | 2023-01-10 | 湖北工业大学 | Integrated sensor and detection method for partial discharge detection of various power equipment |
- 2023
- 2023-04-21CNCN202310429316.1Apatent/CN116184140A/enactivePending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073702A1 (en)* | 2004-01-29 | 2005-08-11 | Kyushu Tlo Company, Limited | Decomposed gas sensor for gas-insulated apparatus, insulating gas decomposition detector, and decomposed gas detecting method |
| CN1926413A (en)* | 2004-10-18 | 2007-03-07 | 日本精工株式会社 | Abnormality diagnosis system for machinery |
| US20080169190A1 (en)* | 2007-01-12 | 2008-07-17 | Honeywell International Inc. | NOx gas sensor for automotive exhaust and air pollution monitoring |
| CN203811754U (en)* | 2014-02-24 | 2014-09-03 | 大连电力勘察设计院有限公司 | An enclosed type gas insulation combined electric appliance partial discharge detection device |
| US20170234758A1 (en)* | 2016-02-03 | 2017-08-17 | State Grid Jiangsu Electric Power Company Nanjing Power Supply Company | GIS leak monitoring method based on vibration signal |
| CN106198724A (en)* | 2016-06-30 | 2016-12-07 | 重庆大学 | A kind of novel multistable ultrasound detection sensor |
| CN113654583A (en)* | 2021-08-31 | 2021-11-16 | 西安交通大学 | Shear vibration-ultrasonic composite sensor and measuring device |
| CN113702685A (en)* | 2021-08-31 | 2021-11-26 | 西安交通大学 | Piezoelectric type ultrasonic-transient earth voltage composite sensor and measuring device |
| CN114002315A (en)* | 2021-11-03 | 2022-02-01 | 广东工业大学 | A multimode detection probe |
| CN114062870A (en)* | 2021-11-17 | 2022-02-18 | 华北电力大学 | A composite sensor for GIS partial discharge acousto-optical joint detection |
| CN114509651A (en)* | 2022-04-15 | 2022-05-17 | 湖北工业大学 | GIS partial discharge external ultrasonic and ultrahigh frequency integrated sensor and detection method |
| CN115586404A (en)* | 2022-09-28 | 2023-01-10 | 湖北工业大学 | Integrated sensor and detection method for partial discharge detection of various power equipment |
Non-Patent Citations (1)
| Title |
|---|
| 张昭宇 等: "电力设备机械振动-超声波融合检测传感器研制及应用", 《中国电机工程学报》, pages 1 - 11* |
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