KR20040077292A - Shorted-Turn Sensor Structure for Generator Rotor - Google Patents

Shorted-Turn Sensor Structure for Generator Rotor Download PDF

Info

Publication number
KR20040077292A
KR20040077292A KR1020030012798A KR20030012798A KR20040077292A KR 20040077292 A KR20040077292 A KR 20040077292A KR 1020030012798 A KR1020030012798 A KR 1020030012798A KR 20030012798 A KR20030012798 A KR 20030012798A KR 20040077292 A KR20040077292 A KR 20040077292A
Authority
KR
South Korea
Prior art keywords
sensor
short circuit
rotor
generator
generator rotor
Prior art date
Application number
KR1020030012798A
Other languages
Korean (ko)
Other versions
KR100485379B1 (en
Inventor
조지원
주영호
김희동
이영준
공태식
Original Assignee
한국서부발전 주식회사
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 한국서부발전 주식회사 filed Critical 한국서부발전 주식회사
Priority to KR10-2003-0012798A priority Critical patent/KR100485379B1/en
Publication of KR20040077292A publication Critical patent/KR20040077292A/en
Application granted granted Critical
Publication of KR100485379B1 publication Critical patent/KR100485379B1/en

Links

Classifications

    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings
    • 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
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE: A structure of a sensor for diagnosing layer short circuit of a rotor of a generator is provided to prevent previously a trouble of the rotor by predicting a state of the layer short circuit of the rotor. CONSTITUTION: A sensor(2) is used for detecting a state of layer short circuit of a rotor wire and generating a voltage waveform signal. A sensor signal measurement unit(3) measures the voltage waveform signal. The sensor is formed with a sensor tip(6) having a coil winding part and a sensor base(7) adhered on a rotor. The coil winding part is covered by rubber. The sensor signal measurement unit is connected to the sensor by using a wire(8). The sensor signal measurement unit is coupled to a boss(9) by using a bolt. A body includes a surge protector(11) for protecting a diagnosis system from an abnormal voltage.

Description

발전기 회전자의 층간단락 진단용 센서구조{Shorted-Turn Sensor Structure for Generator Rotor}{Shorted-Turn Sensor Structure for Generator Rotor}

본 발명은 전력을 생산하는 발전기 회전자 권선의 건전성과 층간단락 진단을 위한 진단용 센서구조에 관한 것으로, 특히 정상운전중 회전자 권선의 층간단락 여부 진단을 통해 발전기의 운전신뢰도를 확보하여 불시고장을 예방하고, 이상상태를 조기 발견하여 계획적이고 효율적인 정비계획을 수립할 수 있는 발전기 회전자 계자권선의 층간단락 진단용 센서구조에 관한 것이다.The present invention relates to a diagnostic sensor structure for diagnosing the integrity and interlayer short circuit of the generator rotor windings for generating power, in particular, to ensure the reliability of the generator through the diagnosis of the interlayer short circuit of the rotor winding during normal operation to avoid failure The present invention relates to a sensor structure for diagnosing short-circuit short circuits in generator rotor windings that can prevent and detect abnormal conditions early and establish a planned and efficient maintenance plan.

일반적으로 이용되고 있는 종래의 발전기 회전자 권선진단은 통상적으로 발전기를 정지한 상태에서 절연저항시험, 분담전압측정등 간이 진단방법을 이용하는데, 이와 같이 발전기 회전자의 층간단락 여부를 진단하기 위해서는 반드시 발전기를 정지한 후에나 가능하며, 정확한 층간단락 발생수 및 발생위치를 검출하는데 신뢰성이 매우 낮았다.Conventional generator rotor winding diagnosis generally used uses simple diagnostic methods such as insulation resistance test and shared voltage measurement while the generator is stopped. It is possible only after the generator is stopped, and the reliability of detecting the exact number of short-circuit occurrences and the location of the occurrence is very low.

즉 종래에는 발전기의 회전자 권선 진단을 위해 필히 발전기를 정지시킨 다음, 이 발전기 회전자의 건전성과 층간단락을 진단해야 하므로 불편함과 비경제적인 문제점등이 있었다.That is, in the prior art, the generator must be stopped for diagnosing the rotor winding of the generator, and thus, the soundness and interlayer short circuit of the generator rotor have to be diagnosed.

이에 본 발명은 상기와 같은 제반 결점을 해소하기 위하여 창출한 것으로서, 본 발명의 목적은 발전기가 정상운전중에 회전자 권선의 층간단락 여부를 예측함으로서 불시고장을 예방하고, 이상상태를 조기 발견하여 계획적이고 효율적인 정비계획 수립을 할 수 있는 발전기 회전자 권선 층간단락 진단용 센서구조를 제공하는데 있다.Therefore, the present invention has been created to solve the above-mentioned shortcomings, and an object of the present invention is to predict whether the generator windings are inter-layer short circuits during normal operation, to prevent accidents, and to detect abnormal conditions early and plan. The present invention provides a sensor structure for diagnosing the interlayer short circuit between the windings of a generator rotor for efficient and efficient maintenance planning.

상기의 목적을 달성하기 위하여 본 발명에 의한 발전기 회전자 층간단락 진단용 센서는, 발전기 회전자 개별 슬롯의 자속을 검출하여 전압을 유기하는 센서와 이를 발전기 외부에서 신호를 받아 시험을 가능케 하며, 그리고 발전기 내부 이상 전압 발생시 시험을 위한 계측기 보호를 위해 설치되는 써지 보호기를 포함하는 센서 신호 측정부 등으로 구성된 것을 특징으로 한다.In order to achieve the above object, the generator rotor interlayer short circuit diagnostic sensor according to the present invention detects the magnetic flux of each generator rotor slot and induces a voltage, and enables the test by receiving a signal from the outside of the generator, and the generator It is characterized by consisting of a sensor signal measuring unit including a surge protector is installed to protect the instrument for testing in the event of an internal abnormal voltage.

도 1은 본 발명에 따른 발전기 회전자 층간단락 진단용 센서 구조를 나타낸 단면도,1 is a cross-sectional view showing the structure of the generator rotor interlayer short circuit diagnostic sensor according to the present invention;

도 2는 도 1의 센서와 연관된 센서 신호 측정부의 분리 단면도,2 is an exploded cross-sectional view of a sensor signal measuring unit associated with the sensor of FIG. 1;

도 3은 본 발명이 발전기 회전자에 설치된 상태도,3 is a state in which the present invention is installed in the generator rotor,

도 4는 도 1과 도 2의 연결 설치도이다.4 is a connection installation diagram of FIGS. 1 and 2.

- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-

1 : 발전기 회전자, 2 : 층간단락 진단용 센서,1: generator rotor, 2: sensor for diagnosis of short circuit between floors,

3 : 센서 신호 측정부, 4 : 고무,3: sensor signal measuring unit, 4: rubber,

5 : 코일 와인링부, 6 : 센서팁,5: coil winding portion, 6: sensor tip,

7 : 센서 베이스, 8 : 전선,7: sensor base, 8: wire,

9 : 마개 보스, 10 : 보울트,9: stopper boss, 10: bolt,

11 : 써지 보호기, 12 : 몸체.11: surge protector, 12: body.

이하 본 발명을 첨부된 예시 도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 발전기 회전자 층간단락 진단용 센서구조, 도 2는 도 1에서 출력된 신호를 측정하는 센서신호 측정부의 도면, 도 3은 발전기 회전자에 진단용 센서가 설치된 상태도 이고, 도 4는 층간 진단용 센서와 센서 신호 측정부의 연결 상태도 이다.1 is a sensor structure for diagnosing a generator rotor short circuit between floors according to the present invention, FIG. 2 is a view of a sensor signal measuring unit measuring a signal output from FIG. 1, and FIG. 3 is a state diagram in which a diagnostic sensor is installed on a generator rotor. 4 is a connection state diagram of the interlayer diagnostic sensor and the sensor signal measurement unit.

본 발명은 발전기 회전자(1) 권선의 층간 단락유무를 검출하여 전압 파형으로 신호를 발생하는 층간단락 진단용 센서(2)와, 상기 센서(2)에서 출력된 전압 파형의 신호를 측정하는 센서 신호 측정부(3)로 이루어지되, 상기 층간단락 진단용 센서(2)는 고무(4)로 감싸진 코일 와인딩부(5)를 갖춘 센서 팁(6)과 발전기 회전자(1)에 견고하게 부착할 수 있는 센서 베이스(7)로 구성되고, 이 센서(2)와 전선(8)을 매개로 연결되는 센서 신호 측정부(3)는 마개보스(9)에 보울트(10)를 매개로 체결되면서 센서(2)의 이상전압 유기시 진단장비를 보호하는 써지 보호기(11)를 갖춘 몸체(12)로 이루어져 있다.The present invention is an interlayer short circuit diagnostic sensor (2) for detecting the presence or absence of an interlayer short circuit in the winding of the generator rotor (1), and a signal signal for measuring the signal of the voltage waveform output from the sensor (2) It consists of a measuring section (3), the interlayer short circuit diagnostic sensor (2) is firmly attached to the sensor tip (6) and the generator rotor (1) with a coil winding (5) wrapped in rubber (4) It consists of a sensor base (7) which can be connected to the sensor 2 and the wire (8) via the sensor signal measuring unit 3 is fastened to the stopper boss (9) via the bolt 10 as a medium It consists of a body (12) having a surge protector (11) to protect the diagnostic equipment when the abnormal voltage induced (2).

한편 상기 센서 팁(6)은 내부에 코일이 감겨있어 발전기 회전자 권선 각 슬롯에서 나오는 자속을 검출하여 이를 전압 파형으로 유기하는 것으로 내부의 코일와인딩부(5)는 테프론 튜브에 굵기 0.12㎜의 코일이 237회 감겨져 있다. 그리고 이의 외부는 설치시 파손을 줄이기 위하여 고무재질(Rubber)로 만들어 졌으며, 센서 베이스(7) 부분은 발전기에 견고하게 부착할 수 있도록 베이크라이트(Bakelite) 재질을 사용한다.On the other hand, the sensor tip (6) has a coil wound inside to detect the magnetic flux from each slot of the generator rotor winding and induces it as a voltage waveform. The coil winding portion (5) of the coil is 0.12 mm thick Teflon tube It is wound 237 times. And the outside of it is made of rubber (Rubber) to reduce damage during installation, the sensor base (7) part uses a bakelite (Bakelite) material to be firmly attached to the generator.

한편 도 3과 도 4에 도시된 바와 같이, 상기 층간단락 진단용 센서(2)는 발전기 내부 고정자 웨지(Wedge)에 설치되면서 신호선인 전선(8)을 매개로 발전기의 외부로 인출하여 써지 보호기(11)를 갖춘 센서 신호 측정부(3)와 연결되어 있다.Meanwhile, as shown in FIGS. 3 and 4, the interlayer short circuit diagnosis sensor 2 is installed in the stator wedge of the generator, and is drawn out to the outside of the generator through the wire 8, which is a signal line, to protect the surge protector 11. It is connected to the sensor signal measuring unit 3 with).

그리고, 상기 센서 신호 측정부(3)의 몸체(12)는 스테인레스강으로 만들어 녹이 슬지 않도록 하였으며 시험을 위해 공지의 진단시스템을 연결하여 사용하며, 내부에 삽입된 써지 보호기(11)는 발전기 내부에서 센서에 이상전압 유기시 진단장비 보호를 위하여 설치한 것이다.In addition, the body 12 of the sensor signal measuring unit 3 is made of stainless steel so as not to rust and connected to a known diagnostic system for testing, and a surge protector 11 inserted therein is used inside the generator. It is installed to protect the diagnostic equipment when abnormal voltage is induced in the sensor.

상술한 본 발명에 의하면 발전기 정상운전중에 진단할 수 있으며, 발전기 회전자 권선의 층간단락 발생위치 및 발생 수 등을 정확히 신뢰성 있게 판정할 수 있는 효과가 있으면서, 진단시 발전기를 정지해야 하는 불편함과 비경제적인 상황을 개선시키는 잇점등을 갖는다.According to the present invention described above can be diagnosed during the normal operation of the generator, there is an effect that can accurately and reliably determine the position and the number of occurrences of the interlayer short circuit of the generator rotor winding, and the inconvenience of having to stop the generator during the diagnosis and It has the advantage of improving the uneconomic situation.

Claims (2)

발전기 회전자(1) 권선의 층간 단락유무를 검출하여 전압 파형으로 신호를 발생하는 층간단락 진단용 센서(2)와, 상기 센서(2)에서 출력된 전압 파형의 신호를 측정하는 센서 신호 측정부(3)로 이루어지되, 상기 층간단락 진단용 센서(2)는 고무(4)로 감싸진 코일 와인딩부(5)를 갖춘 센서 팁(6)과 발전기 회전자(1)에 견고하게 부착할 수 있는 센서 베이스(7)로 구성되고, 이 센서(2)와 전선(8)을 매개로 연결되는 센서 신호 측정부(3)는 마개보스(9)에 보울트(10)를 매개로 체결되면서 센서(2)의 이상전압 유기시 진단장비를 보호하는 써지 보호기(11)를 갖춘 몸체(12)로 이루어진 것을 특징으로 하는 발전기 회전자의 층간단락 진단용 센서구조.An interlayer short circuit diagnostic sensor (2) for detecting the presence or absence of an interlayer short circuit of the winding of the generator rotor (1) and a signal signal measuring unit for measuring a signal of the voltage waveform output from the sensor ( 3), the interlayer short circuit diagnosis sensor (2) is a sensor that can be firmly attached to the sensor tip (6) and the generator rotor (1) with a coil winding (5) wrapped in rubber (4) The sensor signal measuring unit 3, which is composed of a base 7 and connected through the sensor 2 and the wire 8, is fastened to the stopper boss 9 via the bolt 10, and the sensor 2 is connected thereto. Sensor structure for diagnosing the interlayer short circuit of the generator rotor, characterized in that the body (12) having a surge protector (11) to protect the diagnostic equipment when the abnormal voltage induced. 제 1항에 있어서, 상기 층간 단락 진단용 센서(2)는 신호선인 전선(8)을 매개로 발전기 외부에 있는 센서 신호 측정부(3)와 연결되어 이루어진 것을 특징으로 하는 발전기 회전자의 층간 단락 진단용 센서구조.The method of claim 1, wherein the sensor for diagnosing the short circuit between layers is connected to the sensor signal measuring unit 3 located outside the generator through the wire 8 as a signal line. Sensor structure.
KR10-2003-0012798A 2003-02-28 2003-02-28 Shorted-Turn Sensor Structure for Generator Rotor KR100485379B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2003-0012798A KR100485379B1 (en) 2003-02-28 2003-02-28 Shorted-Turn Sensor Structure for Generator Rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2003-0012798A KR100485379B1 (en) 2003-02-28 2003-02-28 Shorted-Turn Sensor Structure for Generator Rotor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR20-2003-0022113U Division KR200328619Y1 (en) 2003-07-09 2003-07-09 Shorted-Turn Sensor Structure for Generator Rotor

Publications (2)

Publication Number Publication Date
KR20040077292A true KR20040077292A (en) 2004-09-04
KR100485379B1 KR100485379B1 (en) 2005-04-27

Family

ID=37363218

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2003-0012798A KR100485379B1 (en) 2003-02-28 2003-02-28 Shorted-Turn Sensor Structure for Generator Rotor

Country Status (1)

Country Link
KR (1) KR100485379B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100763613B1 (en) * 2007-01-31 2007-10-04 주식회사 대덕시스템 Method for analyzing automatically inter layer short of rotator in high voltage circulator
KR101031652B1 (en) * 2008-10-09 2011-04-29 와이피피 주식회사 Apparatus for checking shorted-turn for generator rotor windings
CN103823150A (en) * 2013-12-11 2014-05-28 贵州电力试验研究院 Turbo generator rotor interturn short circuit fault diagnosis method based on multi sensor joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100763613B1 (en) * 2007-01-31 2007-10-04 주식회사 대덕시스템 Method for analyzing automatically inter layer short of rotator in high voltage circulator
KR101031652B1 (en) * 2008-10-09 2011-04-29 와이피피 주식회사 Apparatus for checking shorted-turn for generator rotor windings
CN103823150A (en) * 2013-12-11 2014-05-28 贵州电力试验研究院 Turbo generator rotor interturn short circuit fault diagnosis method based on multi sensor joint
CN103823150B (en) * 2013-12-11 2017-01-11 贵州电力试验研究院 Turbo generator rotor interturn short circuit fault diagnosis method of multi sensor joint

Also Published As

Publication number Publication date
KR100485379B1 (en) 2005-04-27

Similar Documents

Publication Publication Date Title
Stone et al. Stator winding monitoring
JPH0357976A (en) Method and apparatus for detecting partial discharge
KR101255317B1 (en) Arrester Soundness Decision and Line Monitoring System by Measuring Leakage current of Arrester
KR100988267B1 (en) A Diagnosis Apparatus for SVL on Underground Power Cable System
US6087836A (en) Apparatus for and method of monitoring the status of the insulation on the wire in a winding
KR101958296B1 (en) Apparatus for diagnosing a transformer and method for the same
KR101031652B1 (en) Apparatus for checking shorted-turn for generator rotor windings
KR101972325B1 (en) Apparatus and method for diagnosing breakdown of switchgear
KR101886192B1 (en) Apparatus for diagnosing a power transformer
KR100485379B1 (en) Shorted-Turn Sensor Structure for Generator Rotor
KR200328619Y1 (en) Shorted-Turn Sensor Structure for Generator Rotor
JP3347004B2 (en) Partial discharge detection device
JP4869103B2 (en) Earth leakage relay
KR100905971B1 (en) System and method for on-Line diagnostic of Generator-Motor
JP2004226299A (en) Deterioration diagnosing device for winding of rotating electric machine
Zhou et al. Cost-effective on-line partial discharge of measurements for cables
Kueck et al. Assessment of valve actuator motor rotor degradation by Fourier analysis of current waveform
KR101012462B1 (en) Insulation Diagnostic Method Using Ultrasonic Scanning for Epoxy Insulator of Mold Transformers
JP2866172B2 (en) Transmission line fault direction locating method
Gupta et al. Use of machine hipot testing in electric utilities
JPH07280676A (en) Method for monitoring abnormality of concrete
JPH0642214Y2 (en) Current measuring device
JP2003217955A (en) Monitor for stationary induction apparatus
JP2541590Y2 (en) Insulator combined voltage sensor
KR200231669Y1 (en) M.O.F fault an electric current sense device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130402

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20140410

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20160407

Year of fee payment: 12

FPAY Annual fee payment

Payment date: 20170412

Year of fee payment: 13

FPAY Annual fee payment

Payment date: 20180405

Year of fee payment: 14

FPAY Annual fee payment

Payment date: 20190409

Year of fee payment: 15