CN104142421B - Converting equipment insulated on-line monitoring system and method for work thereof - Google Patents

Converting equipment insulated on-line monitoring system and method for work thereof Download PDF

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Publication number
CN104142421B
CN104142421B CN201310165822.0A CN201310165822A CN104142421B CN 104142421 B CN104142421 B CN 104142421B CN 201310165822 A CN201310165822 A CN 201310165822A CN 104142421 B CN104142421 B CN 104142421B
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leakage current
moa
phase angle
measuring
line voltage
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CN104142421A (en
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傅中君
王旭敏
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CHANGZHOU SHUNCHUANG ELECTRICAL TECHNOLOGY Co Ltd
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CHANGZHOU SHUNCHUANG ELECTRICAL TECHNOLOGY Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • G01R31/1227Testing 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
    • G01R31/1236Testing 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 surge arresters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • G01R31/1227Testing 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
    • G01R31/1263Testing 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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation

Abstract

The invention discloses a kind of converting equipment insulated on-line monitoring system, comprising: for measuring MOA or the current measuring device of capacitive apparatus leakage current;This current measuring device includes: for obtaining the first transformer of the leakage current signal of MOA or capacitive apparatus, for obtaining the second transformer of the voltage signal of electrical network, the CPU that the synchronization ADC, ADC synchronization with this being connected with this first, second transformer is connected, the communication module that is connected with this CPU.In this system, the measuring method of the resistive leakage current of MOA or capacitive apparatus includes: W sampled data of the Leakage Current signal of synchronized sampling line voltage and MOA or capacitive apparatus at equal intervals;Obtain the m of line voltage1Subharmonic amplitude and initial phase angle;Obtain the m of Leakage Current2Subharmonic amplitude and initial phase angle;Application harmonic superposition principle calculates the virtual value of resistive Leakage Current;Calculate line voltage and the initial phase angle of Leakage Current;Leakage Current projected angle on line voltage is obtained according to sciagraphy;Calculate resistive Leakage Current.

Description

Converting equipment insulated on-line monitoring system and method for work thereof
Technical field
The present invention relates to a kind of converting equipment insulated on-line monitoring system and method for work thereof.
Background technology
At present, the experiment work of China's Substation Electric Equipment, mainly it is still according to preventative " the test rule of electrical equipment Journey " requirement periodically carry out preventive trial.Result according to test judges the running status of equipment, so that it is determined that its Whether can continue to put into operation.Adhere to that the safe operation of China's power system is served very by preventive trial for a long time Big effect, but along with power system high capacity, Towards Higher Voltage and structure complicate, along with the development of industrial and agricultural production, Requirement to the security reliability index of power system is more and more higher.This traditional test and diagnostic method have seemed more Inadaptable, need when being mainly manifested in test to have a power failure, the test period is long.Few power transmission amount and economic life is caused to bring necessarily Impact, this is just difficult to timely tracing trouble defect.Along with being in full swing of high pressure equipment repair based on condition of component work, set up one The system of converting equipment running status monitored in real time by set, for converting equipment state estimation, risk analysis, fault diagnosis, inspection Repairing strategic decision-making provides technical support to be the most necessary.
Metal oxide arrester (being called for short MOA) obtains extensively because of its superior overvoltage protection characteristic in power system General application, but MOA resistor disc is aging and through be heated and impact failure can cause fault, seriously may result in it quick-fried Fried, spark gap punctures and also results in substation bus bar short circuit, affects system safety operation, it is therefore necessary to operating MOA carries out strict effective detection and periodic preventative is tested.In the detection and test of Zinc-Oxide Arrester, exchange Leakage current measurement under working voltage is an important project, the size of the resistive current first harmonics composition in leakage current Can relatively accurately reflect the defects such as Zinc-Oxide Arrester makes moist, the aging and built-in electrical insulation of valve block is impaired.Therefore, let out resistive The parameters such as leakage current first-harmonic are accurately measured and just relatively accurately can be differentiated MOA performance.
The resistive leakage current etc. of operating MOA is joined by MOA testing current in resistance property device application frequency analysis technology Amount detects, and then judges the performance of MOA.Described test device is typically by MOA Leakage Current sensor, electricity Net voltage sensor, signal conditioning circuit, data acquisition circuit, CPU and corresponding software of analyzing form.MOA lets out Dew current sensor typically uses current transformer, in the earth lead of the lower end that string is located at MOA, obtains letting out of MOA Dew electric current;Grid voltage sensor typically uses voltage transformer, is arranged on the voltage letter obtaining electrical network near PT equipment Number;Voltage, current signal that sensor is sent here by signal conditioning circuit are transformed to be suitable for the voltage signal of Acquisition Circuit sampling; By data acquisition circuit, the signal after conditioning is sampled, then is completed the analysis to harmonic wave and detection by analyzing software, And then obtain the resistive Leakage Current of MOA.The precision that prior art obtains the resistive Leakage Current of MOA is relatively low, this impact Accuracy and reliability to MOA performance criteria.
The frequency that what is called refers to two periodic signals with frequency periodic signal is identical;The initial phase angle of so-called periodic signal, be Refer to: for periodic signal f (t)=f (t+kT), (wherein: k ∈ Z is integer, T is the cycle), initial phase angle In formula: t0For the zero crossing nearest from initial point;So-called phase contrast refers to: two differences with frequency initial phase angle of periodic signal.
Phase difference measurement power equipment state monitoring, signal collection and analysis, communicate, the field such as automatically control has Important meaning.Conventional method for measuring phase difference has zero passage method, correlational analysis method and waveform transformation approach etc. multiple.
Zero passage method includes zero-crossing timing method and zero passage voltage relative method etc..
Zero-crossing timing method is the time difference of detection periodic signal zero crossing, and the method needs accurately to determine zero crossing time and height Precision timing device, but often there is bigger error in the method for the determination zero crossing of routine.
Zero passage voltage relative method is to measure two sine waves then to be counted by sine relation in the voltage difference of near zero-crossing point Calculating phase contrast, in the case of having harmonic wave, phase angle and voltage magnitude that use zero-crossing method measurement obtains are that each harmonic is vowed The phase angle of amount overlaid waveforms and voltage magnitude, and do not meet sinuso sine protractor.
Correlational analysis method is that cross-correlation function zero moment value using two same frequency sinusoidal signals is directly proportional to its phase contrast Principle obtains phase contrast.But owing to the determination of zero-crossing timing is the most difficult, and spatial interference is in the feelings having fixing interference source Under condition also and the most uncorrelated, thus certainty of measurement cannot ensure.
Waveform transformation approach is periodic signal to be converted into other waveforms such as triangular wave, sawtooth waveforms, square wave measured its phase place later Difference, this kind of method is the deformation of cross zero detecting method, has similar measurement drawback.
Summary of the invention
The technical problem to be solved is to provide a kind of converting equipment insulated on-line monitoring system and work side thereof Method, by obtaining high-precision phase difference measurements, to obtain the resistive leakage of high-precision MOA or capacitive apparatus Electric current, and then improve MOA or the accuracy of capacitive apparatus performance criteria and reliability.
For solving above-mentioned technical problem, the invention provides a kind of converting equipment insulated on-line monitoring system, comprising: embedding Enter formula processor, touch screen, network communication interface, multiple serial ports and the relay being connected with this flush bonding processor;Institute The serial ports stated connects to be had for measuring MOA or the current measuring device of capacitive apparatus leakage current;This current measuring device Including: for obtaining the first transformer of the leakage current signal of MOA or capacitive apparatus, for obtaining the voltage of electrical network Second transformer of signal, the synchronization ADC, ADC synchronization with this being connected with this first, second transformer is connected CPU, the communication module being connected with this CPU;Described CPU is connected with flush bonding processor by described serial ports;Described Relay is for controlling the power supply of described current measuring device.
Two current sensors are transformed to voltage signal tested current signal, are then entered signal by digitized measurement system Row integer-period sampled (ADC) and improvement type plesiochronous DFT process, it is thus achieved that the first-harmonic vector of the two signal and phase place thereof Angle.Discounting for the phase distortion problem of voltage transformer (PT), then can calculate capacitance type equipment Cx easily Dielectric loss Tan δ-value and the fundametal compoment peak I of current in resistance property of spark gap equipment MOARP.With conventional phase place mistake Zero balancing method is compared, and the great advantage of the method is to need not the analog signal processing circuit of complexity, stablizing of long-term work Property is guaranteed, and can effectively suppress harmonic wave interference effect.Actual measurement shows, though the harmonic signal in tested current signal Content is identical with first-harmonic content, also will not impact dielectric loss and current in resistance property result.
The method of work of above-mentioned converting equipment insulated on-line monitoring system, comprising: MOA or the resistive of capacitive apparatus are let out The measuring method of leakage current, this measuring method includes:
Adopt for the W of the Leakage Current signal of (a) synchronized sampling line voltage and described MOA or capacitive apparatus at equal intervals Sample data;
B () uses the m that harmonic analysis method obtains line voltage to above-mentioned W sampled data1Subharmonic amplitude Vk1With Initial phase anglek1=1,…,m1;Meanwhile, the m of described Leakage Current is obtained2Subharmonic amplitude Ik2And initial phase angle k2=1,…,m2;Described m1、m2The highest humorous not less than described line voltage and Leakage Current signal discrete frequency spectrum respectively Ripple number of times;
(c) application harmonic superposition principleCalculate virtual value I of described Leakage Current;
D () calculates line voltage and the initial phase angle of described Leakage CurrentWith
E () obtains Leakage Current projected angle on line voltage according to sciagraphy
F () calculates the resistive Leakage Current of described MOA or capacitive apparatus
Described synchronized sampling at equal intervals be respectively to line voltage and described Leakage Current signal within a cycle simultaneously Sampling N point, i.e. sample frequency are fs=Nf, and N >=64, f is the frequency of line voltage.
Preferred as one, described step (d) is according to the initial phase angle of following initial phase angle Equation for Calculating periodic signal:
Wherein,For harmonic wave phase angle, AkFor harmonic amplitude, k ∈ Z is integer; Calculate described initial phase angleWithTime, the value of m is described m respectively1、m2
As the preferred scheme of another kind, described step (d) uses following steps:
(1), take
(2), substitute intoCalculate
(3), substitute intoCalculate
(4), with calculating acquisitionWithSubstitute intoCalculate new
(5), repeat step (2), (3), (4) untilRestrain or meet required precision.
Preferably, described m1、m2The number of times of subharmonic is by the higher harmonics number of times of tested periodic signal and required dividing Analyse precision and select accordingly, but the higher harmonics number of times of the most tested periodic signal discrete spectrum.
W is determined by sampling number N in the cycle and selected harmonic analysis method, as used discrete fourier change (DFT) when method or fast Fourier change (FFT) method, W=nN(n is the periodicity of sampling);Plesiochronous harmonic wave Analytic process is determined by integration method, and conventional integration method has muiltiple-trapezoid integration method W=nN, complexification rectangular integration side Method W=n (N-1), iterative Simpson integration method W=n (N-1)/2 etc..The measurement essence of the method for measuring phase difference of the present invention Spending and determined by sampling number N in the cycle and selected harmonic analysis method, calculating process will not bring measurement error, can To obtain high-precision measurement result.
Relative to prior art, the positive effect of the present invention is:
(1) measuring method of the resistive leakage current of the MOA of the present invention or capacitive apparatus, is intended, primarily, to improve and improves The measurement quality of the resistive Leakage Current of MOA or capacitive apparatus, obtains high-precision resistive Leakage Current, so improve right MOA or the accuracy of capacitive apparatus performance criteria and reliability.The certainty of measurement of the method for measuring phase difference of the present invention by In cycle, sampling number N and selected harmonic analysis method determine, calculating process will not bring measurement error, can obtain Obtain high-precision measurement result.
(2) the converting equipment insulated on-line monitoring system of the present invention is that a set of power transformation for 35kV above is high Voltage electrical equipment, implements status monitoring and the total solution of diagnosis, is adapted to power transformer set during monitoring runs Pipe, reactor, transformer, the end shield electric current of coupling capacitor and dielectric loss and capacitance, the leakage current of spark gap, Current in resistance property and movement counting and isoparametric monitoring movement time and in bus communication mode Monitoring Data with numeral shape Formula is sent to collection control collecting unit.This monitoring system also can monitor system integration with intelligent substation by independent self-organizing system Design, is sent to integrated information platform by Ethernet Monitoring Data, can be the prison of several monitoring system of electric substation Survey the tidal data recovering data management diagnostic system to upper strata, it is achieved to the high voltage equipment insulation on-line monitoring in Duo Zuo transformer station System carries out Centralizing inspection monitoring management.User utilizes LAN can obtain Monitoring Data result at any time.
(3) measuring method of the resistive leakage current of the MOA of the present invention or capacitive apparatus is digital measurement process, Have only to, according to sample frequency fs, two tested same frequency periodic signals are carried out synchronized sampling during measuring, then according to Harmonic analysis method and initial phase angle equation carry out computing, it is possible to obtain two initial phase anglesWithFinally calculate them Phase contrastNeed not add other hardware circuit, full digital starting during measurement.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the converting equipment insulated on-line monitoring system of the present invention;
Fig. 2 is the measurement MOA of the present invention or the structured flowchart of the current measuring device of capacitive apparatus leakage current.
Detailed description of the invention
Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As it is shown in figure 1, the converting equipment insulated on-line monitoring system of the present embodiment includes: flush bonding processor (ARM11), The touch screen (preferably A56TFT resistive touch liquid crystal display screen), the network communication interface that are connected with this flush bonding processor (wrap Include: Ethernet, optical fiber interface), keyboard and multiple serial ports and relay.
Described serial ports connects to be had for measuring MOA or the current measuring device of capacitive apparatus leakage current;This electric current is surveyed Amount device includes: for obtaining the first transformer of the leakage current signal of MOA or capacitive apparatus, be used for obtaining electrical network The second transformer of voltage signal, the synchronization ADC being connected with this first, second transformer, ADC phase synchronization with this CPU(preferred STM32 series A RM processor even), the communication module that is connected with this CPU;This communication module Including RS-485 and CAN communication module;Parameters can use ModBus by RS-485 or CAN Rtu protocol teletransmission.
Described CPU is connected with flush bonding processor by described serial ports;Described relay is used for controlling described current measurement The power supply of device.
The measuring method of the resistive leakage current of above-mentioned MOA or capacitive apparatus includes:
Adopt for the W of the Leakage Current signal of (a) synchronized sampling line voltage and described MOA or capacitive apparatus at equal intervals Sample data: f (i), i=0,1 ..., W-1} and { f2(i),i=0,1,…,W-1}.W is by sampling number N in the cycle and selected Harmonic analysis method determines, during as used discrete fourier change (DFT) method or fast Fourier change (FFT) method, W=nN(n is the periodicity of sampling);Plesiochronous harmonic analysis method is determined by integration method, and conventional integration method has multiple Change trapezoidal integration method W=nN, complexification rectangular integration method W=n (N-1), iterative Simpson integration method W=n (N-1)/2 Deng.
B () uses the m that harmonic analysis method obtains line voltage to above-mentioned W sampled data1Subharmonic amplitude {Vk1,k1=1,…,m1And initial phase angleMeanwhile, the m of described Leakage Current is obtained2Subharmonic amplitude {Ik2,k2=1,…,m2And initial phase angleDescribed m1、m2It is not less than described line voltage respectively and lets out The higher harmonics number of times of dew current signal discrete spectrum, it is possible to by the higher harmonics number of times of tested periodic signal and required Analysis precision and select accordingly;
(c) application harmonic superposition principleCalculate virtual value I of described Leakage Current;
D () calculates line voltage and the initial phase angle of described Leakage CurrentWith
E () obtains Leakage Current projected angle on line voltage according to sciagraphy
F () calculates the resistive Leakage Current of described MOA or capacitive apparatus
Described synchronized sampling at equal intervals be respectively to line voltage and described Leakage Current signal within a cycle simultaneously Sampling N point, i.e. sample frequency are fs=Nf, and N >=64, f is the frequency of line voltage.
Preferred as one, described step (d) is according to the initial phase angle of following initial phase angle Equation for Calculating periodic signal:
Wherein,For harmonic wave phase angle, AkFor harmonic amplitude, k ∈ Z is integer; Calculate described initial phase angleWithTime, the value of m is described m respectively1、m2
As the preferred scheme of another kind, described step (d) uses following steps:
(1), take
(2), substitute intoCalculate
(3), substitute intoCalculate
(4), with calculating acquisitionWithSubstitute intoCalculate new
(5), repeat step (2), (3), (4) untilRestrain or meet required precision.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail Illustrate, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this Within bright protection domain.

Claims (1)

1. a method of work for converting equipment insulated on-line monitoring system, converting equipment insulated on-line monitoring system includes: embedded place Reason device, the touch screen being connected with this flush bonding processor, network communication interface, multiple serial ports and relay;
Described serial ports connects the current measuring device for measuring MOA leakage current;
This current measuring device includes: for obtaining the first transformer of the leakage current signal of MOA, for obtaining the voltage of electrical network Second transformer of signal, with this first, second transformer be connected synchronization ADC, ADC synchronization with this be connected CPU, The communication module being connected with this CPU;
Described CPU is connected with flush bonding processor by described serial ports;
Described relay is for controlling the power supply of described current measuring device;
It is characterized in that,
Described method of work, including: the measuring method of the resistive leakage current of MOA, this measuring method includes:
W sampled data of the Leakage Current signal of (a) synchronized sampling line voltage and described MOA at equal intervals;
B () uses the m that harmonic analysis method obtains line voltage to above-mentioned W sampled data11Subharmonic amplitude Vk1And first phase AngleK1=1 ..., m1;Meanwhile, the m of described Leakage Current is obtained2Subharmonic amplitude Ik2And initial phase angleK2=1 ..., m2;Described m1、m2Respectively not less than described line voltage and the higher harmonics number of times of Leakage Current signal discrete frequency spectrum;
(c) application harmonic superposition principleCalculate virtual value I of described Leakage Current;
D () calculates line voltage and the initial phase angle of described Leakage CurrentWith
E () obtains Leakage Current projected angle on line voltage according to sciagraphy
F () calculates the resistive Leakage Current of described MOA
Described step (d) is according to the initial phase angle of following initial phase angle Equation for Calculating periodic signal:
Wherein,For harmonic wave phase angle, AkFor harmonic amplitude, k ∈ Z is integer;Calculate Described initial phase angleWithTime, the value of m is described m respectively1、m2
CN201310165822.0A 2013-05-07 2013-05-07 Converting equipment insulated on-line monitoring system and method for work thereof Active CN104142421B (en)

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CN201611013774.3A CN106707007B (en) 2013-05-07 2013-05-07 The working method of transformer equipment insulated on-line monitoring system
CN201310165822.0A CN104142421B (en) 2013-05-07 2013-05-07 Converting equipment insulated on-line monitoring system and method for work thereof
CN201611013801.7A CN106443307B (en) 2013-05-07 2013-05-07 Transformer equipment insulated on-line monitoring system
CN201611013773.9A CN106597229B (en) 2013-05-07 2013-05-07 The working method of 35kV or more transformer equipment insulated on-line monitoring system

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CN201611013773.9A Division CN106597229B (en) 2013-05-07 2013-05-07 The working method of 35kV or more transformer equipment insulated on-line monitoring system
CN201611013774.3A Division CN106707007B (en) 2013-05-07 2013-05-07 The working method of transformer equipment insulated on-line monitoring system

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106154128B (en) * 2016-07-11 2018-10-26 国家电网公司 The built-in electrical insulation detecting system of high-tension apparatus containing insulator
CN108459228A (en) * 2018-01-11 2018-08-28 东南大学 A kind of 10KV metal oxide arresters line detection system for failure and method
CN109283385B (en) * 2018-10-17 2021-05-04 许昌许继软件技术有限公司 Lightning arrester monitoring data online processing method and system
CN110244144A (en) * 2019-05-28 2019-09-17 许昌许继软件技术有限公司 A kind of arrester state monitoring method and AC Data Acquisition method
CN110470941B (en) * 2019-09-16 2021-10-08 威胜集团有限公司 Method, device and equipment for detecting leakage current of alternating current and storage medium
CN110716112A (en) * 2019-11-15 2020-01-21 国电南京自动化股份有限公司 Insulation detection method for high-voltage cascaded SVG (static var generator) insulation frame
CN111025094A (en) * 2019-11-19 2020-04-17 云南电网有限责任公司临沧供电局 XLPE cable reliability evaluation method based on leakage current change coefficient
CN111007435A (en) * 2019-12-27 2020-04-14 广东电网有限责任公司电力科学研究院 Monitoring method, device and equipment for analyzing transformer fault based on resistance-capacitance component

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1032609C (en) * 1992-02-12 1996-08-21 东北电力试验研究院 Method for measurement of resistive current first harmonics of gapless metal oxide lightning arrester and its apparatus
JPH09145759A (en) * 1995-11-28 1997-06-06 Mitsubishi Electric Corp Leakage current detector for zinc oxide type arrester
CN2591628Y (en) * 2002-12-06 2003-12-10 湖南远能电力发展有限公司 Insulating property on-line detector for electrical equipment
KR100593710B1 (en) * 2003-07-07 2006-06-28 한빛이디에스(주) Deterioration Diagnosis Apparatus and Method of Zinc Oxide Gapless Lightning Arrester Using Nonlinear Operation Characteristics
DE10345658B3 (en) * 2003-09-25 2005-04-28 Siemens Ag Device for monitoring the leakage current of a surge arrester
CN1892240B (en) * 2005-07-08 2011-03-16 上海市电力公司 On-line monitoring method for dissipative current value in leakage current of lightning protector
BRPI0700841A (en) * 2007-03-20 2008-11-04 Santos Eduardo Pedrosa real-time monitoring system of capacitive bushings of power transformers, power reactors, current transformers, circuit breakers and the like
CN101055302B (en) * 2007-05-30 2010-07-28 上海龙源智光电力技术有限公司 GPS clock signal based high voltage capacitive apparatus insulated on-line monitoring system and its implement method
JP2009058234A (en) * 2007-08-29 2009-03-19 Sbc Co Ltd Leak current measuring instrument and measuring method
JP4993728B2 (en) * 2007-09-14 2012-08-08 日置電機株式会社 Effective leakage current measuring instrument
CN101403777B (en) * 2008-11-05 2012-07-04 四川电力试验研究院 Resistive current tester for great current zinc oxide lightning arrester
CN201477162U (en) * 2009-06-23 2010-05-19 西安工程大学 Capacitive device medium loss angle online monitoring device
CN201489065U (en) * 2009-09-03 2010-05-26 湖州电力局 Online detection device for lightning arrester
CN201707380U (en) * 2010-05-27 2011-01-12 上海科能电气科技有限公司 Portable MOA live detection device based on GPS synchronization
CN101986164B (en) * 2010-09-20 2012-11-28 华北电力大学(保定) Method for extracting resistive current of metal oxide arrester (MOA)
CN102393488B (en) * 2011-08-24 2013-12-11 江苏理工学院 Harmonic analysis method
CN102435816B (en) * 2011-10-21 2014-05-07 江苏理工学院 Working method of MOA (Metal Oxide Arrester) resistive current tester
CN102435815B (en) * 2011-10-21 2014-02-19 江苏理工学院 Operating method of resistive current on-line monitoring system of metal oxide arrester (MOA)
CN202421421U (en) * 2011-11-30 2012-09-05 北京光耀电力自动化有限公司 Insulating-performance online monitoring device of capacitive high-voltage electrical equipment
CN102628919A (en) * 2012-04-25 2012-08-08 上海交通大学 Transformer bushing insulation state on-line monitoring system
CN202794436U (en) * 2012-05-03 2013-03-13 上海精鼎电力科技有限公司 Insulated on-line monitor device for zinc oxide lightning arrester
CN102901856B (en) * 2012-09-17 2017-11-28 吉林省电力有限公司长春供电公司 Cable run arrester resistance current detection method based on phase search
CN203204121U (en) * 2013-05-07 2013-09-18 常州顺创电气科技有限公司 Online monitoring system for insulation of power transformation equipment

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CN106707007A (en) 2017-05-24
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CN106443307A (en) 2017-02-22
CN104142421A (en) 2014-11-12
CN106597229A (en) 2017-04-26

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