CN106199352A - The modification method of insulator contamination voltage under a kind of high conductivity mist - Google Patents

The modification method of insulator contamination voltage under a kind of high conductivity mist Download PDF

Info

Publication number
CN106199352A
CN106199352A CN201610480781.8A CN201610480781A CN106199352A CN 106199352 A CN106199352 A CN 106199352A CN 201610480781 A CN201610480781 A CN 201610480781A CN 106199352 A CN106199352 A CN 106199352A
Authority
CN
China
Prior art keywords
insulator
esdd
pollution
flashover voltage
pollution flashover
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201610480781.8A
Other languages
Chinese (zh)
Inventor
耿江海
钟正
刘云鹏
郭沁
张凯元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China Electric Power University
Original Assignee
North China Electric Power University
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 North China Electric Power University filed Critical North China Electric Power University
Priority to CN201610480781.8A priority Critical patent/CN106199352A/en
Publication of CN106199352A publication Critical patent/CN106199352A/en
Pending legal-status Critical Current

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
    • G01R31/12—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
    • G01R31/1245—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 line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
    • 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
    • G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

The invention provides the modification method of insulator contamination voltage under a kind of high conductivity mist, the method includes, measures the actual equivalent salt density ρ of insulator surfaceESDD；Measure the pollution flashover voltage U of insulator according to the test of artificial pollution method insulator arc-over, the pollution flashover voltage recorded according to the shape of insulator and pollution level and test further simulates classical pollution flashover voltage function；Insulator calculating equivalent salt density ρ under corresponding fog electrical conductivity is released according to classical pollution flashover voltage functionESDD；According to calculating equivalent salt density ρESDDWith actual equivalent salt density ρESDDRelease the close COEFFICIENT K of additional salt；Draw revised pollution flashover voltage function according to the close COEFFICIENT K of additional salt, further predict the pollution flashover voltage of insulator.Present invention introduces the close COEFFICIENT K of additional salt, enable original computing formula to reflect the joint effect effect to the flashover voltage of the insulator of fog electrical conductivity and pollution severity of insulators, make value of calculation more accurate, more closing to reality.

Description

The modification method of insulator contamination voltage under a kind of high conductivity mist
Technical field
The present invention relates to voltage test technical field, particularly to the repairing of insulator contamination voltage under a kind of high conductivity mist Correction method.
Background technology
Along with the fast development of China's economy, the continuous quickening of process of industrialization, environment is caused by a large amount of trade wastes Immeasurable destruction.The waste gas that combustion of fossil fuel gives off is particularly evident to the pollution of air, makes haze in recent years Situation is further serious, and lasting haze weather all occur in Jing-jin-ji region, the Yangtze River Delta and Pearl River Delta.The electrical network mist caused by haze dodges and stops Electrification serious threat the most is to safe operation of power system and the productive life of the people, and in electrical network flashing accident, insulate Sub-flashover fault account for the ratio amplified mutually.Owing to insulator surface contamination is the moistest, cause insulator surface that local occurs Discharge and produce electric arc, the development of electric discharge, cause flashover the most at last.Therefore, calculate the flashover voltage of insulator surface, accurate Really grasp the voltage margin that insulator can bear, take into full account the environmental factors impact on the flashover voltage of the insulator, to preventing Insulator arc-over, to protection safe operation of power system, ensures that people's lives are significant.
Summary of the invention
It is an object of the invention to provide the modification method of insulator contamination voltage under a kind of high conductivity mist, introduce additional salt Close coefficient, thus reflect the joint effect effect to the flashover voltage of the insulator of fog electrical conductivity and pollution severity of insulators, make The measurement result of insulator contamination voltage is more accurate.
The technical scheme that the present invention provides is:
Under high conductivity mist, the modification method of insulator contamination voltage, comprises the steps:
Step one, insulator is defiled and obtains the actual equivalent salt density ρ of insulator surfaceESDD；
Step 2, according to artificial pollution method insulator arc-over test measure insulator pollution flashover voltage U；
Step 3, the pollution flashover voltage recorded according to the shape of insulator and pollution level and test simulate classical pollution flashover Function of voltage.
U = A × ρ E S D D - a ,
Wherein A is the coefficient relevant with insulator shape and pollution level, and a is for characterizing ρESDDSpy on pollution flashover voltage impact Levy index；
Step 4, the pollution flashover voltage U ' measured under fog electrical conductivity, and substitute into
U ′ = A × ρ E S D D ′ - a ,
Obtain insulator calculating equivalent salt density ρ ' under corresponding fog electrical conductivityESDD；
Step 5, according to calculate equivalent salt density ρ 'ESDDWith actual equivalent salt density ρESDD, release the close coefficient of additional salt
Step 6, the pollution flashover voltage function calculated under revised corresponding fog electrical conductivity be:
U "=A × (K ρ "ESDD)-a, wherein, ρ "ESDDActual equivalent salt density measured value for insulator surface.
Preferably, in step one, required silicon when determining corresponding configuration filth solution according to the actual surface area of insulator Diatomaceous earth and the amount of NaCl, and make corresponding equivalent salt density ρESDDFilthy solution, be evenly coated in insulator surface, to be dried after Insulator surface equivalent salt density is ρESDD。
Beneficial effects of the present invention is embodied in following aspect: present invention introduces the close COEFFICIENT K of additional salt, makes original computing formula The joint effect effect to the flashover voltage of the insulator of fog electrical conductivity and pollution severity of insulators can be reflected, make value of calculation more Add accurately, more closing to reality.
Accompanying drawing explanation
Fig. 1 is the flow chart of the modification method of insulator contamination voltage under high conductivity mist of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition Word can be implemented according to this.
The invention provides the modification method of insulator contamination voltage under a kind of high conductivity mist, comprise the steps:
Step one S110: obtain the actual equivalent salt density ρ of insulator surfaceESDD。
In this step, according to the method for artificial pollution, before insulator is defiled, according to the actual surface area of insulator Required kieselguhr and the amount of NaCl when determining corresponding configuration filth solution, and make corresponding equivalent salt density ρESDDFilth molten Liquid, is evenly coated in insulator surface, and rear insulator surface equivalent salt density to be dried is ρESDD。
Step 2 S120: measure the pollution flashover voltage U of insulator according to the test of artificial pollution method insulator arc-over.
Step 3 S130: simulate classics according to the pollution flashover voltage that the shape of insulator and pollution level and test record Pollution flashover voltage function.
In this step, classical pollution flashover voltage Computation function model isWherein A is and insulation The coefficient that sub-shape is relevant with pollution level, a is for characterizing ρESDDCharacteristic index on pollution flashover voltage impact.The dirt that experiment is recorded Lightning pressure U and corresponding equivalent salt density ρESDDSubstitute into Computation function model, draw classical pollution flashover electricity according to multi-exponential fitting Pressure computing formula, i.e. obtains the value of A and a.
Step 4 S140: release insulator calculating under corresponding fog electrical conductivity according to classical pollution flashover voltage function equivalent The close ρ ' of saltESDD。
In this step, owing to classical pollution flashover voltage computing formula is based on cleaning mist, therefore at cleaning mist Under conditions of keep a constant, by under corresponding fog electrical conductivity pollution flashover voltage substitute into traditional counting formulaDraw the calculating equivalent salt density ρ ' under corresponding fog electrical conductivityESDD。
Step 5 S150: according to calculating equivalent salt density ρ 'ESDDWith actual equivalent salt density ρESDDRelease the close COEFFICIENT K of additional salt, order The close coefficient of additional salt
Step 6 S160: after obtaining the close COEFFICIENT K of additional salt, draws the pollution flashover electricity under revised corresponding fog electrical conductivity Pressure function is:
U "=A × (K ρ "ESDD)-a。
I.e. measure the actual equivalent salt density measured value ρ of insulator surface "ESDDAfter, above-mentioned formula can be used, repaiied Pollution flashover voltage U under corresponding fog electrical conductivity after just ".
According to above formula, it is possible to reflect fog electrical conductivity and the pollution severity of insulators common shadow to the flashover voltage of the insulator Ring effect, it is possible to calculate the flashover voltage of insulator the most accurately.
As shown in table 1, specific salts is close and three XP10-160 type insulator contamination voltages under fog electrical conductivity (kV) experimental data.
Table 1
By multi-exponential fitting, pollution flashover voltage experimental data iteration is obtained and insulator shape and pollution level phase The coefficient A closed and salt close index a, simulates traditional counting formulaWherein normal under different fog electrical conductivity Shown in the value table 2 of number A and close characteristic index a of salt.
Table 2
Such as ρESDDFor 0.10mg/cm2, time on the basis of 0.0018S/m fog electrical conductivity, its U is 48.231kV, now a =0.3254, and when fog electrical conductivity rises most 0.275S/m, its U then reduces to 40.775kV, a=0.2932.
ClassicalFormula with clean mist as experimental condition under draw, for convenience of becoming with study on classics Fruit compares, and under 0.0018S/m fog electrical conductivity, can keep ρESDDTo pollution flashover voltage effect characteristics index a= In the case of 0.3254 is constant, according toDraw value of calculation ρ 'ESDDFor 0.1713mg/cm2, it is known that equivalent The ratio of the close value of calculation of salt and actual valueI.e. adjusted coefficient K is 1.713.
Therefore, under 0.0018S/m fog electrical conductivity, revised pollution flashover voltage function is:
U "=A × (1.713 ρ "ESDD)-a。
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed Use.It can be applied to various applicable the field of the invention completely.For those skilled in the art, can be easily Realize other amendment.Therefore, under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit In specific details with shown here as the legend with description.

Claims (2)

1. the modification method of insulator contamination voltage under a high conductivity mist, it is characterised in that comprise the steps:
Step one, insulator is defiled and obtains the actual equivalent salt density ρ of insulator surfaceESDD；
Step 2, according to artificial pollution method insulator arc-over test measure insulator pollution flashover voltage U；
Step 3, the pollution flashover voltage recorded according to the shape of insulator and pollution level and test simulate classical pollution flashover voltage Function.
U = A × ρ E S D D - a ,
Wherein A is the coefficient relevant with insulator shape and pollution level, and a is for characterizing ρESDDThe feature of pollution flashover voltage impact is referred to Number；
Step 4, the pollution flashover voltage U ' measured under fog electrical conductivity, and substitute into
U ′ = A × ρ E S D D ′ - a ,
Obtain insulator calculating equivalent salt density ρ ' under corresponding fog electrical conductivityESDD；
Step 5, according to calculate equivalent salt density ρ 'ESDDWith actual equivalent salt density ρESDD, release the close coefficient of additional salt
Step 6, the pollution flashover voltage function calculated under revised corresponding fog electrical conductivity be:
U "=A × (K ρ "ESDD)-a, wherein, ρ "ESDDActual equivalent salt density measured value for insulator surface.
The modification method of insulator contamination voltage under high conductivity mist the most according to claim 1, it is characterised in that step In one, required kieselguhr and the amount of NaCl when determining corresponding configuration filth solution according to the actual surface area of insulator, and prepare Go out corresponding equivalent salt density ρESDDFilthy solution, be evenly coated in insulator surface, rear insulator surface equivalent salt density to be dried is i.e. For ρESDD。
CN201610480781.8A 2016-06-28 2016-06-28 The modification method of insulator contamination voltage under a kind of high conductivity mist Pending CN106199352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610480781.8A CN106199352A (en) 2016-06-28 2016-06-28 The modification method of insulator contamination voltage under a kind of high conductivity mist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610480781.8A CN106199352A (en) 2016-06-28 2016-06-28 The modification method of insulator contamination voltage under a kind of high conductivity mist

Publications (1)

Publication Number Publication Date
CN106199352A true CN106199352A (en) 2016-12-07

Family

ID=57462044

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610480781.8A Pending CN106199352A (en) 2016-06-28 2016-06-28 The modification method of insulator contamination voltage under a kind of high conductivity mist

Country Status (1)

Country Link
CN (1) CN106199352A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106932691A (en) * 2017-02-28 2017-07-07 国网山东省电力公司济宁供电公司 A kind of insulator charged detection means and method based on voltage compensation
CN109991369A (en) * 2019-03-12 2019-07-09 河南宏博测控技术有限公司 A kind of close comprehensive tester of the close salt of insulator ash and test method
CN110044966A (en) * 2019-05-07 2019-07-23 清华大学深圳研究生院 Insulator contamination method for evaluating state and device
CN110514968A (en) * 2019-07-23 2019-11-29 南京工程学院 A kind of insulator withstanding voltage gradient calculation method considering solvable filthy ingredient
CN112526301A (en) * 2020-11-30 2021-03-19 广东电网有限责任公司佛山供电局 High-conductivity under-fog line impact tolerance characteristic test platform and evaluation method
CN112858851A (en) * 2021-01-12 2021-05-28 国网江苏省电力有限公司电力科学研究院 Composite insulator operation performance state evaluation method suitable for special industrial dust area
CN112964756A (en) * 2021-02-03 2021-06-15 浙江屹飞电力科技有限公司 Surface conductivity-based method for correcting salt density of natural pollution test of insulator
CN113514736A (en) * 2021-04-26 2021-10-19 中铁第一勘察设计院集团有限公司 Method for determining creepage specific distance of tunnel insulator of 27.5KV traction system in high-altitude area
CN114518387A (en) * 2021-12-30 2022-05-20 华南师范大学 Insulator equivalent salt deposit density measuring method, measuring instrument and intelligent transmission Internet of things system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110242313A1 (en) * 2010-04-05 2011-10-06 Al-Duwaish Hussain N Contamination monitoring of high voltage insulators
CN102608501A (en) * 2012-02-28 2012-07-25 浙江省电力试验研究院 Assessment method of external insulting state of natural deposit insulator chain based on cross combination
CN102707209A (en) * 2012-06-13 2012-10-03 浙江省电力公司电力科学研究院 Method for researching pollution flashover characters of natural pollutant retention insulator by considering pollution conversion coefficient

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110242313A1 (en) * 2010-04-05 2011-10-06 Al-Duwaish Hussain N Contamination monitoring of high voltage insulators
CN102608501A (en) * 2012-02-28 2012-07-25 浙江省电力试验研究院 Assessment method of external insulting state of natural deposit insulator chain based on cross combination
CN102707209A (en) * 2012-06-13 2012-10-03 浙江省电力公司电力科学研究院 Method for researching pollution flashover characters of natural pollutant retention insulator by considering pollution conversion coefficient

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
关志成等: "《绝缘子及输变电设备外绝缘》", 31 January 2006 *
蒋兴良等: "《污秽绝缘子闪络特性与泄漏电流特性研究》", 《中国电机工程学报》 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106932691A (en) * 2017-02-28 2017-07-07 国网山东省电力公司济宁供电公司 A kind of insulator charged detection means and method based on voltage compensation
CN106932691B (en) * 2017-02-28 2019-07-26 国网山东省电力公司济宁供电公司 A kind of insulator charged detection device and method based on voltage compensation
CN109991369A (en) * 2019-03-12 2019-07-09 河南宏博测控技术有限公司 A kind of close comprehensive tester of the close salt of insulator ash and test method
CN110044966A (en) * 2019-05-07 2019-07-23 清华大学深圳研究生院 Insulator contamination method for evaluating state and device
CN110044966B (en) * 2019-05-07 2022-02-18 清华大学深圳研究生院 Insulator contamination state evaluation method and device
CN110514968A (en) * 2019-07-23 2019-11-29 南京工程学院 A kind of insulator withstanding voltage gradient calculation method considering solvable filthy ingredient
CN112526301B (en) * 2020-11-30 2022-01-21 广东电网有限责任公司佛山供电局 High-conductivity under-fog line impact tolerance characteristic test platform and evaluation method
CN112526301A (en) * 2020-11-30 2021-03-19 广东电网有限责任公司佛山供电局 High-conductivity under-fog line impact tolerance characteristic test platform and evaluation method
CN112858851A (en) * 2021-01-12 2021-05-28 国网江苏省电力有限公司电力科学研究院 Composite insulator operation performance state evaluation method suitable for special industrial dust area
CN112964756A (en) * 2021-02-03 2021-06-15 浙江屹飞电力科技有限公司 Surface conductivity-based method for correcting salt density of natural pollution test of insulator
CN113514736A (en) * 2021-04-26 2021-10-19 中铁第一勘察设计院集团有限公司 Method for determining creepage specific distance of tunnel insulator of 27.5KV traction system in high-altitude area
CN113514736B (en) * 2021-04-26 2024-04-26 中铁第一勘察设计院集团有限公司 Method for determining creepage ratio distance of 27.5KV traction system tunnel insulator in high-altitude area
CN114518387A (en) * 2021-12-30 2022-05-20 华南师范大学 Insulator equivalent salt deposit density measuring method, measuring instrument and intelligent transmission Internet of things system

Similar Documents

Publication Publication Date Title
CN106199352A (en) The modification method of insulator contamination voltage under a kind of high conductivity mist
Kong et al. Fault diagnosis and quantitative analysis of micro-short circuits for lithium-ion batteries in battery packs
CN109916788B (en) PM pair for distinguishing emission change and meteorological condition change of different areas2.5Method for influencing concentration
CN104459489B (en) Method for identifying contamination degree of post insulator
CN106124942A (en) A kind of based on infrared and ultraviolet image method zero resistance insulator detection method
CN103076548A (en) Method for predicting flashover voltage by using surface conductivity and leakage current
Hu et al. Influence of air pressure and humidity on positive direct current corona discharge performances of the conductor in a corona cage
CN105093077A (en) Transmission line area pollution severity characterization method
Banik et al. Studies the effect of Equivalent Salt Deposit Density on leakage current and flashover voltage of artificially contaminated disc insulators
Sun et al. Discharge development process and flashover performance of snow-accreted insulators under natural environment
Wang et al. The effect of pollutants on leakage current and power degradation of photovoltaic modules
CN110514968B (en) Insulator withstand voltage gradient calculation method considering soluble pollution components
Gencoglu et al. Computation of AC flashover voltage of polluted HV insulators using a dynamic arc model
Struthers et al. The simulation of the Antarctic ozone hole by chemistry-climate models
Xue et al. Method of amplitude data recovery in PMU measurements that considers synchronisation errors
CN102798751B (en) A kind of Novel voltage stability detection method
CN106546824B (en) The system harmonic impedance estimation method of power grid containing photovoltaic returned based on variable coefficient
CN206362663U (en) Dunghill migration characteristic detection means in one kind snow
Yang et al. Modeling of DC flashover on ice-covered HV insulators based on dynamic electric field analysis
CN106126766A (en) Porcelain long rod insulator anti-pollution characteristic optimization method based on model test
CN108414520B (en) Method for testing film forming adhesion performance of insulating cleaning agent
Fofana et al. A simplified model of corona discharge development on an ice surface [outdoor insulation applications]
Segalini et al. Wind-farm simulation over moderately complex terrain
赵滨 et al. The dynamical and climate tests of an atmospheric general circulation model using the second-order Adams-Bashforth method
Wang et al. One practical method of fault location for transmission lines based on dual-voltage fault components

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20161207