WO2021023282A1 - 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法 - Google Patents

一种gis局部放电uhf信号向外辐射的同轴引线结构及方法 Download PDF

Info

Publication number
WO2021023282A1
WO2021023282A1 PCT/CN2020/107594 CN2020107594W WO2021023282A1 WO 2021023282 A1 WO2021023282 A1 WO 2021023282A1 CN 2020107594 W CN2020107594 W CN 2020107594W WO 2021023282 A1 WO2021023282 A1 WO 2021023282A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylindrical metal
lead
thin cylindrical
gis
metal lead
Prior art date
Application number
PCT/CN2020/107594
Other languages
English (en)
French (fr)
Inventor
叶兆平
郑书生
陈晔
魏登峰
卞志文
郭艳雪
阮莹
吴勇昊
陈金祥
傅智为
邓明峰
郑宇�
Original Assignee
国网福建省电力有限公司
国网福建省电力有限公司电力科学研究院
华北电力大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国网福建省电力有限公司, 国网福建省电力有限公司电力科学研究院, 华北电力大学 filed Critical 国网福建省电力有限公司
Priority to US17/121,730 priority Critical patent/US11561252B2/en
Publication of WO2021023282A1 publication Critical patent/WO2021023282A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • 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
    • G01R31/1227—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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • G01R1/06772—High frequency probes

Definitions

  • the invention belongs to the field of high-voltage technology, and particularly relates to a coaxial lead structure and method for radiating a GIS partial discharge UHF signal to the outside.
  • GIS is a key equipment in the power system. Once an insulation failure occurs, it will cause a large-scale blackout. This may cause huge losses to the national economy and cause social unrest. In order to avoid GIS insulation failure, it is necessary to detect and repair insulation defects in time.
  • the partial discharge UHF detection technology is an effective method. UHF signal is a kind of electromagnetic wave.
  • UHF signal is a kind of electromagnetic wave.
  • partial discharge detection is realized through built-in sensors and external sensors. Built-in sensors have problems such as poor universality and inability to maintain power outages; external sensors are often affected by the metal ring and have extremely low detection sensitivity. For this reason, finding a reasonable detection window is the key to GIS partial discharge detection.
  • the purpose of the present invention is to provide a coaxial lead structure and method for radiating GIS partial discharge UHF signals to the outside, which improves the detection sensitivity.
  • the technical solution of the present invention is: a coaxial lead structure for GIS partial discharge UHF signal to radiate outwards, including a GIS cavity, a circular opening provided on the GIS cavity, and a circular opening provided at the opening And seal the dielectric cylinder of the circular hole, the thin cylindrical metal lead that extends into and fixed on the dielectric cylinder, and the ground lead connected with the thin cylindrical metal lead.
  • one end of the grounding lead is connected to the shell of the GIS cavity through a ground potential screw to be grounded, and the other end of the grounding lead is grounded through two ground nuts screwed on a thin cylindrical metal lead.
  • the metal leads are fixedly connected.
  • the ground potential screw is fixed to the housing of the GIS cavity through a ground potential screw hole opened in the housing of the GIS cavity.
  • the two ground nuts clamp and fix the other end of the ground lead on the thin cylindrical metal lead.
  • the radius of the thin cylindrical metal lead is represented by a
  • the radius of the circular hole is represented by b
  • the dielectric constant of the dielectric cylinder is represented by ⁇ r
  • the upper cut-off frequency is not less than 2GHz
  • c is the propagation speed of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, and f c is the upper cut-off frequency.
  • the length of the thin cylindrical metal lead is not greater than a quarter wavelength of the upper cut-off frequency, and the length of the thin cylindrical metal lead is represented by l, that is, the following formula is satisfied:
  • c is the propagation velocity of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, f c is the upper cut-off frequency, and ⁇ r is the dielectric constant of the dielectric cylinder.
  • the part of the thin cylindrical metal lead extending into the dielectric cylinder is flush with the inner wall of the GIS cavity, and does not penetrate into the GIS cavity.
  • the present invention also provides a method for radiating UHF signals of GIS partial discharges based on the above-mentioned structure.
  • a coaxial lead structure is arranged to radiate UHF electromagnetic wave signals generated by partial discharges inside the GIS cavity outside the circular opening. ;
  • the current oscillation effect of the thin cylindrical metal lead is used to further enhance the UHF electromagnetic wave signal radiated to the outside;
  • a UHF detection sensor and instrument are set next to the coaxial lead structure to detect the UHF signal.
  • the radius of the thin cylindrical metal lead is represented by a
  • the radius of the circular hole is represented by b
  • the dielectric constant of the dielectric cylinder is represented by ⁇ r
  • the upper cut-off frequency is not less than 2GHz
  • c is the propagation speed of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, and f c is the upper cut-off frequency.
  • the length of the thin cylindrical metal lead is not greater than a quarter wavelength of the upper cut-off frequency, and the length of the thin cylindrical metal lead is represented by l, that is, the following formula is satisfied:
  • c is the propagation velocity of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, f c is the upper cut-off frequency, and ⁇ r is the dielectric constant of the dielectric cylinder.
  • the present invention has the following beneficial effects: the present invention will enable the outer side of the coaxial lead structure to obtain a stronger signal, and the detection of the partial discharge UHF signal at this position will be better than the built-in, basin-type insulator external detection method The detection sensitivity is doubled.
  • Fig. 1 is the coaxial lead structure of the GIS partial discharge UHF signal radiating outward.
  • Fig. 2 is a schematic flow chart of a method for radiating a UHF signal from a partial discharge of a GIS according to the present invention.
  • Figure 3 is a comparison chart of the effects of various detection methods.
  • the present invention provides a coaxial lead structure for GIS partial discharge UHF signal to radiate outwards, including a GIS cavity 1, a circular opening provided on the GIS cavity 2, and a circular opening provided at the circular opening
  • the dielectric cylinder 3 that seals the circular hole
  • the thin cylindrical metal lead 4 that extends into and is fixed to the dielectric cylinder
  • the ground lead 5 connected to the thin cylindrical metal lead.
  • One end of the ground lead is connected to the shell of the GIS cavity through a ground potential screw 7 to be grounded, and the other end of the ground lead is fixedly connected to the thin cylindrical metal lead through two ground nuts 8, 9 screwed on the thin cylindrical metal lead .
  • the ground potential screw is fixed on the housing of the GIS cavity through the ground potential screw hole 6 opened in the housing of the GIS cavity.
  • the two ground nuts clamp and fix the other end of the ground lead on the thin cylindrical metal lead.
  • the part where the thin cylindrical metal lead extends into the dielectric cylinder is flush with the inner wall of the GIS cavity, and does not penetrate into the GIS cavity.
  • the radius of the thin cylindrical metal lead is represented by a
  • the radius of the circular hole is represented by b
  • the dielectric constant of the dielectric cylinder is represented by ⁇ r
  • the upper cut-off frequency is not less than 2GHz, then a, b, ⁇ r meet the following formula :
  • c is the propagation speed of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, and f c is the upper cut-off frequency.
  • the length of the thin cylindrical metal lead is not greater than one-quarter wavelength of the upper cut-off frequency, and the length of the thin cylindrical metal lead is represented by l, which satisfies the following formula:
  • c is the propagation velocity of electromagnetic waves in vacuum, 3 ⁇ 10 8 m/s, f c is the upper cut-off frequency, and ⁇ r is the dielectric constant of the dielectric cylinder.
  • the present invention also provides a method for radiating GIS partial discharge UHF signals to the outside based on the above-mentioned structure.
  • the coaxial lead structure is set to radiate the internal part of the GIS cavity outside the circular opening.
  • the UHF electromagnetic wave signal generated by the discharge; then, the current oscillation effect of the thin cylindrical metal lead is used to further enhance the UHF electromagnetic wave signal radiated; finally, a UHF detection sensor and instrument are set up next to the coaxial lead structure to detect the UHF signal.
  • a coaxial lead structure for the partial discharge UHF signal to radiate outward is set on the housing of the GIS arrester. Specifically, a hole is opened on the base of the arrester, an epoxy resin cylinder is installed, and the coaxial lead is installed in the cylinder.
  • the thickness of the inner wall of the GIS shell cavity is 20mm, the inner surface radius is 3mm, and the diameter of the cylindrical metal lead set inside the epoxy resin cylinder is 5mm. Ground the metal lead. At this time, the sensitivity of the external detection signal is 1 times higher than that of the internal signal.
  • Figure 3 is a comparison chart of the effects of various detection methods.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

一种GIS局部放电UHF信号向外辐射的同轴引线结构及方法，其中，结构包括GIS腔体（1）、设于GIS腔体（1）上的圆形洞口（2）、设于圆形洞口（2）处并封堵圆形洞口（2）的介质圆柱体（3）、伸入并固定于介质圆柱体（3）的细圆柱形金属引线（4）、与细圆柱形金属引线（4）连接的接地引线（5）。这种结构及方法将使得同轴引线结构外侧获得较强的信号，在此位置检测局部放电UHF信号，将比内置式、盆式绝缘子外置式检测方法的检测灵敏度提高1倍。

Description

一种GIS局部放电UHF信号向外辐射的同轴引线结构及方法 技术领域
本发明属于高电压技术领域，特别涉及一种GIS局部放电UHF信号向外辐射的同轴引线结构及方法。
背景技术
GIS是电力系统里的关键设备，一旦发生绝缘故障将导致大面积停电。由此将可能给国民经济造成巨大的损失，也会引起社会动荡。为了避免GIS绝缘故障，需要及时检测和维修绝缘缺陷。局部放电UHF检测技术是一种行之有效的方法。UHF信号是一种电磁波，目前通过内置式传感器、外置式传感器等实现局部放电检测。内置传感器存在普适性差、且无法停电维护等问题；外置式传感器往往受到金属环的影响，检测灵敏度极低。为此，寻找合理的检测窗口是GIS局部放电检测的关键所在。
发明内容
本发明的目的在于提供一种GIS局部放电UHF信号向外辐射的同轴引线结构及方法，提高了检测灵敏度。
为实现上述目的，本发明的技术方案是：一种GIS局部放电UHF信号向外辐射的同轴引线结构，包括GIS腔体、设于GIS腔体上的圆形洞口、设于圆形洞口处并封堵圆形洞口的介质圆柱体、伸入并固定于介质圆柱体的细圆柱形金属引线、与细圆柱形金属引线连接的接地引线。
在本发明一实施例中，所述接地引线的一端通过地电位螺丝连接GIS腔体的外壳从而接地，接地引线的另一端通过两个螺设于细圆柱形金属引线的接地螺母与细圆柱形金属引线固定连接。
在本发明一实施例中，所述地电位螺丝通过开设于GIS腔体的外壳的地电位螺纹孔固定于GIS腔体的外壳上。
在本发明一实施例中，所述两个接地螺母将接地引线的另一端夹紧固定于细圆柱形金属引线上。
在本发明一实施例中，细圆柱形金属引线的半径用a表示，圆形洞口的半径用b表示，介质圆柱体的介电常数用ε r表示，上限截止频率不低于2GHz，则a、b、ε r满足下式：
Figure PCTCN2020107594-appb-000001
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率。
在本发明一实施例中，细圆柱形金属引线的长度不大于上限截止频率的四分之一波长，细圆柱形金属引线的长度用l表示，即满足下式：
Figure PCTCN2020107594-appb-000002
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率，ε r为介质圆柱体的介电常数。
在本发明一实施例中，所述细圆柱形金属引线伸入介质圆柱体的部分与GIS腔体内壁齐平，不探入GIS腔体内。
本发明还提供了一种基于上述所述结构的GIS局部放电UHF信号向外辐射的方法，首先，设置的同轴引线结构，向圆形洞口外辐射GIS腔体内部局部放电产生的UHF电磁波信号；而后，利用细圆柱形金属引线的电流振荡作用，进一步增强向外辐射的UHF电磁波信号；最后，在同轴引线结构旁边设置UHF检测传感器和仪器检测UHF信号。
在本发明一实施例中，细圆柱形金属引线的半径用a表示，圆形洞口的半径用b表示，介质圆柱体的介电常数用ε r表示，上限截止频率不低于2GHz，则a、b、ε r满足下式：
Figure PCTCN2020107594-appb-000003
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率。
在本发明一实施例中，细圆柱形金属引线的长度不大于上限截止频率的四分之一波长，细圆柱形金属引线的长度用l表示，即满足下式：
Figure PCTCN2020107594-appb-000004
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率，ε r为介质圆柱体的介电常数。
相较于现有技术，本发明具有以下有益效果：本发明将使得同轴引线结构外侧获得较强的信号，在此位置检测局部放电UHF信号，将比内置式、盆式绝缘子外置式检测方法的检测灵敏度提高1倍。
附图说明
图1为本发明GIS局部放电UHF信号向外辐射的同轴引线结构。
图2为本发明GIS局部放电UHF信号向外辐射的方法流程示意图。
图3为各种检测方法的效果对比图。
具体实施方式
下面结合附图，对本发明的技术方案进行具体说明。
如图1所示，本发明提供了一种GIS局部放电UHF信号向外辐射的同轴引线结构，包括GIS腔体1、设于GIS腔体上的圆形洞口2、设于圆形洞口处并封堵圆形洞口的介质圆柱体3、伸入并固定于介质圆柱体的细圆柱形金属引线4、与细圆柱形金属引线连接的接地引线5。所述接地引线的一端通过地电位螺丝7连接GIS腔体的外壳从而接地，接地引线的另一端通过两个螺设于细圆柱形金属引线的接地螺母8、9与细圆柱形金属引线固定连接。所述地电位螺丝通过开设于GIS腔体的外壳的地电位螺纹孔6固定于GIS腔体的外壳上。所述两个接地螺母将接地引线的另一端夹紧固定于细圆柱形金属引线上。所述细圆柱形金属引线伸入介质圆柱体的部分与GIS腔体内壁齐平，不探入GIS腔体内。
细圆柱形金属引线的半径用a表示，圆形洞口的半径用b表示，介质圆柱体的介电常数用ε r表示，上限截止频率不低于2GHz，则a、b、ε r满足下式：
Figure PCTCN2020107594-appb-000005
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率。
细圆柱形金属引线的长度不大于上限截止频率的四分之一波长，细圆柱形金属引线的长度用l表示，即满足下式：
Figure PCTCN2020107594-appb-000006
其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率，ε r为介质圆柱体的介电常数。
如图2所示，本发明还提供了一种基于上述所述结构的GIS局部放电UHF信号向外辐射的方法，首先，设置的同轴引线结构，向圆形洞口外辐射GIS腔体内部局部放电产生的UHF电磁波信号；而后，利用细圆柱形金属引线的电流振荡作用，进一步增强向外辐射的UHF电磁波信号；最后，在同轴引线结构旁边设置UHF检测传感器和仪器检测UHF信号。
以下为本发明的具体实现过程。
在GIS避雷器外壳上设置局部放电UHF信号向外辐射的同轴引线结构，具体的在避雷器底座上开孔，安装环氧树脂圆柱，在圆柱内安装同轴引线。GIS外壳空洞的内壁的厚度为20mm，内表面半径为3mm，环氧树脂圆柱内部设置的圆柱型金属引线的直径为5mm。将金属引线接地。这时在外面检测信号比内部信号的灵敏度高1倍。
图3为各种检测方法的效果对比图。
以上是本发明的较佳实施例，凡依本发明技术方案所作的改变，所产生的功能作用未超出本发明技术方案的范围时，均属于本发明的保护范围。

Claims (10)

  1. 一种GIS局部放电UHF信号向外辐射的同轴引线结构，其特征在于，包括GIS腔体、设于GIS腔体上的圆形洞口、设于圆形洞口处并封堵圆形洞口的介质圆柱体、伸入并固定于介质圆柱体的细圆柱形金属引线和与细圆柱形金属引线连接的接地引线。
  2. 根据权利要求1所述的结构，其特征在于，所述接地引线的一端通过地电位螺丝连接GIS腔体的外壳从而接地，接地引线的另一端通过两个螺设于细圆柱形金属引线的接地螺母与细圆柱形金属引线固定连接。
  3. 根据权利要求2所述的结构，其特征在于，所述地电位螺丝通过开设于GIS腔体的外壳的地电位螺纹孔固定于GIS腔体的外壳上。
  4. 根据权利要求2所述的结构，其特征在于，所述两个接地螺母将接地引线的另一端夹紧固定于细圆柱形金属引线上。
  5. 根据权利要求1所述的结构，其特征在于，细圆柱形金属引线的半径用a表示，圆形洞口的半径用b表示，介质圆柱体的介电常数用ε r表示，上限截止频率不低于2GHz，则a、b、ε r满足下式：
    Figure PCTCN2020107594-appb-100001
    其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率。
  6. 根据权利要求1所述的结构，其特征在于，细圆柱形金属引线的长度不大于上限截止频率的四分之一波长，细圆柱形金属引线的长度用l表示，即满足下式：
    Figure PCTCN2020107594-appb-100002
    其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率，ε r为介质圆柱体的介电常数。
  7. 根据权利要求1所述的一种GIS局部放电UHF信号向外辐射的同轴引线结构，其特征在于，所述细圆柱形金属引线伸入介质圆柱体的部分与GIS腔体内壁齐平，不探入GIS腔体内。
  8. 一种基于权利要求1-7任一所述结构的GIS局部放电UHF信号向外辐射的方法，其特征在于，首先，设置的同轴引线结构向圆形洞口外辐射GIS腔体内部局部放电产生的UHF电磁波信号；而后，利用细圆柱形金属引线的电流振荡作用，进一步增强向外辐射的UHF电磁波信号； 最后，在同轴引线结构旁边设置UHF检测传感器和仪器检测UHF信号。
  9. 根据权利要求8所述的方法，其特征在于，细圆柱形金属引线的半径用a表示，圆形洞口的半径用b表示，介质圆柱体的介电常数用ε r表示，上限截止频率不低于2GHz，则a、b、ε r满足下式：
    Figure PCTCN2020107594-appb-100003
    其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率。
  10. 根据权利要求8所述的方法，其特征在于，细圆柱形金属引线的长度不大于上限截止频率的四分之一波长，细圆柱形金属引线的长度用l表示，即满足下式：
    Figure PCTCN2020107594-appb-100004
    其中，c为电磁波在真空中的传播速度，3×10 8米/秒，f c为上限截止频率，ε r为介质圆柱体的介电常数。
PCT/CN2020/107594 2019-08-07 2020-08-07 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法 WO2021023282A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/121,730 US11561252B2 (en) 2019-08-07 2020-12-14 Coaxial lead structure and method for radiating GIS partial discharge UHF signal outward

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910725102.2 2019-08-07
CN201910725102.2A CN110412432B (zh) 2019-08-07 2019-08-07 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/121,730 Continuation US11561252B2 (en) 2019-08-07 2020-12-14 Coaxial lead structure and method for radiating GIS partial discharge UHF signal outward

Publications (1)

Publication Number Publication Date
WO2021023282A1 true WO2021023282A1 (zh) 2021-02-11

Family

ID=68366363

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/107594 WO2021023282A1 (zh) 2019-08-07 2020-08-07 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法

Country Status (3)

Country Link
US (1) US11561252B2 (zh)
CN (1) CN110412432B (zh)
WO (1) WO2021023282A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110412432B (zh) * 2019-08-07 2022-03-08 国网福建省电力有限公司 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法
CN114001295A (zh) * 2021-07-22 2022-02-01 北京波瑞芯工程技术研究院 一种gis隔离开关触头分合状态监测用补光装置及方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1127889A (zh) * 1994-09-02 1996-07-31 Abb管理有限公司 气体绝缘装置上的局部放电感应装置以及局部放电测量系统
CN1135046A (zh) * 1995-03-01 1996-11-06 Abb管理有限公司 局部放电测量装置
CN1715939A (zh) * 2004-06-29 2006-01-04 日本Ae帕瓦株式会社 检测传感器和检测装置及有该传感器的气体绝缘电气设备
KR20080108845A (ko) * 2007-06-11 2008-12-16 성균관대학교산학협력단 Ｓｗｎｔ-ｕｈｆ 융합 센서 및 이를 이용한 가스 절연 개폐장치의 부분 방전을 검출하는 방법
KR20110076339A (ko) * 2009-12-29 2011-07-06 주식회사 효성 가스절연개폐장치용 부분방전 원인의 진단 장치
CN103176112A (zh) * 2013-03-28 2013-06-26 重庆大学 气体绝缘组合电器局部放电在线检测内置超高频传感器
CN105593693A (zh) * 2013-10-01 2016-05-18 三菱电机株式会社 局部放电传感器
CN105759188A (zh) * 2016-04-20 2016-07-13 国网浙江省电力公司电力科学研究院 一种gis局部放电检测的uhf传感器
CN106405340A (zh) * 2015-07-30 2017-02-15 上海欧秒电力监测设备有限公司 一种基于局放传感器的gis故障指示系统
CN107045095A (zh) * 2017-02-07 2017-08-15 西安交通大学 一种光纤特高频复合传感器以及gis局部放电检测装置
CN110412432A (zh) * 2019-08-07 2019-11-05 国网福建省电力有限公司 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327917A1 (de) * 1983-07-29 1985-02-07 Siemens AG, 1000 Berlin und 8000 München Messvorrichtung zur feststellung von teilentladungen innerhalb metallgekapselter, druckgasisolierter hochspannungsschaltanlagen
EP0984289B1 (en) * 1997-05-21 2006-10-18 Hitachi, Ltd. Partial discharge detector of gas-insulated apparatus
CN2754194Y (zh) * 2004-12-15 2006-01-25 上海大学 具有无源无线传输功能的电流互感器
CN101435849B (zh) * 2008-12-25 2011-05-11 清华大学 电力设备地线上局部放电vhf或uhf信号的传感方法
JP2011237235A (ja) * 2010-05-10 2011-11-24 Mitsubishi Electric Corp 電力機器の部分放電検出装置
GB2503112B (en) * 2011-04-06 2016-03-09 Mitsubishi Electric Corp Partial discharge sensor
CN103487728B (zh) * 2013-08-30 2016-06-08 广东电网公司电力科学研究院 测量gis局部放电的窄带电磁波信号耦合方法及检测系统
FR3012615B1 (fr) * 2013-10-31 2016-01-01 Alstom Technology Ltd Procede de detection de decharge partielle dans un poste electrique haute tension isole au gaz
CN103675623B (zh) * 2013-12-07 2016-04-06 西安交通大学 一种冲击电压下gis局部放电检测方法及系统
CN206431168U (zh) * 2017-02-10 2017-08-22 北京碧思特科技有限公司 一种盘式绝缘子特高频传感器固定装置
CN109541413A (zh) * 2018-12-20 2019-03-29 国网上海市电力公司 Gis用局放特高频、超声波、光脉冲联合检测系统及方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1127889A (zh) * 1994-09-02 1996-07-31 Abb管理有限公司 气体绝缘装置上的局部放电感应装置以及局部放电测量系统
CN1135046A (zh) * 1995-03-01 1996-11-06 Abb管理有限公司 局部放电测量装置
CN1715939A (zh) * 2004-06-29 2006-01-04 日本Ae帕瓦株式会社 检测传感器和检测装置及有该传感器的气体绝缘电气设备
KR20080108845A (ko) * 2007-06-11 2008-12-16 성균관대학교산학협력단 Ｓｗｎｔ-ｕｈｆ 융합 센서 및 이를 이용한 가스 절연 개폐장치의 부분 방전을 검출하는 방법
KR20110076339A (ko) * 2009-12-29 2011-07-06 주식회사 효성 가스절연개폐장치용 부분방전 원인의 진단 장치
CN103176112A (zh) * 2013-03-28 2013-06-26 重庆大学 气体绝缘组合电器局部放电在线检测内置超高频传感器
CN105593693A (zh) * 2013-10-01 2016-05-18 三菱电机株式会社 局部放电传感器
CN106405340A (zh) * 2015-07-30 2017-02-15 上海欧秒电力监测设备有限公司 一种基于局放传感器的gis故障指示系统
CN105759188A (zh) * 2016-04-20 2016-07-13 国网浙江省电力公司电力科学研究院 一种gis局部放电检测的uhf传感器
CN107045095A (zh) * 2017-02-07 2017-08-15 西安交通大学 一种光纤特高频复合传感器以及gis局部放电检测装置
CN110412432A (zh) * 2019-08-07 2019-11-05 国网福建省电力有限公司 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法

Also Published As

Publication number Publication date
US20210102989A1 (en) 2021-04-08
CN110412432B (zh) 2022-03-08
CN110412432A (zh) 2019-11-05
US11561252B2 (en) 2023-01-24

Similar Documents

Publication Publication Date Title
WO2021023282A1 (zh) 一种gis局部放电uhf信号向外辐射的同轴引线结构及方法
CN103487728B (zh) 测量gis局部放电的窄带电磁波信号耦合方法及检测系统
CN103176112A (zh) 气体绝缘组合电器局部放电在线检测内置超高频传感器
CN206696387U (zh) 用于gis局部放电检测的外置特高频传感器
Zhang et al. Antipodal Vivaldi antenna to detect uhf signals that leaked out of the joint of a transformer
CN210467753U (zh) 一种射频离子源装置
CN106442634B (zh) 基于同轴测试装置的场敏感型电磁脉冲防护材料测试方法
CN203466160U (zh) 一种超宽带毫米波行波管输能窗
CN210166349U (zh) 一种可发射多频信号的超声探头
CN102810362B (zh) 一种带接地外屏蔽的高电压锥形绝缘结构
CN1967283A (zh) 一种用于气象雷达接收机前端的微波子系统
WO2020038495A1 (zh) 一种基于氢闸流管的高压同轴开关装置
CN106505285A (zh) 一种防射频信号泄露的毫米波高可靠性波导模块
CN107462818B (zh) Gis盆式绝缘子浇筑口外置局放监测用特高频传感器
CN107807312B (zh) 一种特高频局部放电检测方法
CN103884971A (zh) 电力设备局部放电检测装置及其检测方法
CN103715054A (zh) 一种电子回旋共振离子源
CN212845727U (zh) 一种基于超高频电磁波的电力系统污闪检测电路
CN114300841A (zh) 一种基于共面波导馈电的局部放电检测用新型特高频天线
CN206022589U (zh) 天线装置用的管理维护设备
CN204694784U (zh) 压力波法模型电缆空间电荷测试系统
JP2001223171A (ja) プラズマ処理装置
CN114062870A (zh) 一种gis局部放电声光电联合检测复合传感器
CN103779663B (zh) 双频正交极化高隔离度喇叭天线
Gao et al. Research and development of partial discharge anti disturbance system for switch cabinet

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20849791

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20849791

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20849791

Country of ref document: EP

Kind code of ref document: A1