CN206684248U - A kind of metallic oxide arrester electrification test experimental study system - Google Patents
A kind of metallic oxide arrester electrification test experimental study system Download PDFInfo
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- CN206684248U CN206684248U CN201720068678.2U CN201720068678U CN206684248U CN 206684248 U CN206684248 U CN 206684248U CN 201720068678 U CN201720068678 U CN 201720068678U CN 206684248 U CN206684248 U CN 206684248U
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- arrester
- moa
- pillar
- metal oxide
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of metallic oxide arrester electrification test experimental study system, 110kV main transformer of transformer substation, bus, three-phase metal oxide arrester and pressure regulator including standard, also include leakage current of an arrester testing instrument for electrified, equivalent salt density solution spraying device and infrared thermography.The utility model is easy to existing corresponding relation between the rate of change of research equipment running temperature and the rate of change of MOA current in resistance property by setting regulator to change system operation voltage, equivalent salt density solution spraying device and thermal infrared imager monitoring device running temperature；Further by setting arrester pillar roller track, enough locus by changing MOA three-phases are enabled the system to be laid out, to simulate the change of MOA surrounding devices operating condition, it is practical for training and teaching or verification experimental verification etc., and can effectively examine the performance of different MOA leakage current live testing equipment good and bad.
Description
Technical field
Power system be the utility model is related in fortune equipment live technical field of measurement and test, more particularly to a kind of metal oxide
Lightning arrester live-line test experimental study system.
Background technology
At present, metal oxide arrester in transformer station（Hereinafter referred to as " MOA "）It is long-term to bear system operation phase voltage work
With under the factors such as aging, humidity, filth and overvoltage valve block may being caused to gradually degrade, current in resistance property and active power
Increase, finally cause insulation characterisitic to be destroyed, thus how by MOA charging test detect its performance quality with regard to ten
Divide necessity.
MOA live testings are a kind of important detection methods：To the total current by valve block under MOA accidental conditions
Measured with resistive component, and combine initial value difference to judge the deterioration condition of valve block.MOA live testings number in most cases
Preferable according to uniformity, test data is to reflect the true characters of MOA reliablely, but indivedual such as extra-high voltage AC and DC power transformation
Arrester in standing is sometimes due to by system operation voltage pulsation, insulator surface filth degree, MOA running temperatures（Ambient temperature and humidity
Change）, MOA surrounding devices operating conditions change（Geographical arrangement between MOA three-phases）, nonstandard testing equipment or examination
The influence of the various factors such as proved recipe method, cause MOA live testing data comparability bad, conclusion (of pressure testing) is relatively difficult to sentence sometimes
It is disconnected, it is specific as follows shown；
System operation voltage has large effect to the point test of MOA bands, and actual measurement shows：Circuital size is transported with MOA
There is certain relation in row phase voltage, MOA operations phase voltage is influential on total current and current in resistance property, as operation is mutually electric
The increase of pressure, MOA total current can also increase with current in resistance property, and phase angle difference reduces, and vice versa.
Illustrated with the data instance in certain extra-high voltage #2M arresters in March, 2009 ~ January, should by tracing analysis contrast
Group three-phase lightning protector operation phase voltage and circuital relation, it is found that circuital size and arrester operation phase voltage are most of
When have certain relation, with arrester run phase voltage lifting, total current has also increased, and above analyzes resistive electricity
Stream is consequently increased with circuital increase, and vice versa.This explanation MOA operation phase voltages are to have to total current and current in resistance property
Influence, the variation tendency between three is basically identical.But the change for running phase voltage has on circuital change influence
It is much irregular to follow, run and need between phase voltage rate of change and total current rate of change in the presence of what corresponding relation into one
Step research.
The influence that surface filth has to MOA with point test.Outdoor MOA insulators are vulnerable to the filthy pollution of environment, in environment
Insulator outer surface leakage current increases when relative humidity is larger, because the current in resistance property of MOA itself bodies is smaller, even if less
Surface leakage will also result in certain measurement error, so that test data is bigger than normal, it is impossible to true reflection MOA situations.In addition, this
A little surface filths equally influence the voltage's distribiuting of MOA valve block posts and make the increase of its internal leakage electric current.Therefore, the shadow of surface filth
Sound causes the situation of MOA live testing bigger errors larger possibility to be present.But the degree and MOA live testing errors of surface filth
What it need further to study in the presence of corresponding relation.
The influence that equipment running temperature has to MOA with point test.There are some researches show：ZnO valve plate has in small area analysis region
There is negative temperature coefficient and MOA inner spaces are smaller, radiating condition is poor, heat caused by active loss can make the temperature of resistor disc
Degree is higher than environment temperature, and current in resistance property increases with the rise of valve block temperature.But the rate of change of equipment running temperature and MOA are resistive
What it need further to study in the presence of corresponding relation between the rate of change of electric current.
The influence that the change of MOA surrounding devices operating condition has to MOA with point test.There is actual measurement to show that some buses are taken shelter from the thunder
Device can interfere during the equipment such as outlet switch, disconnecting link, CT, pillar to lightning arrester live-line test when close to outlet, cause B
Phase current in resistance property is bigger than normal.After the switching state of outlet switch changes, lightning arrester live-line test data differences are larger.But MOA weeks
Peripheral equipment operating condition changes between the test of MOA current in resistance property and need further to study in the presence of what corresponding relation.
In addition, nonstandard testing equipment or test method may also impact to MOA live testings, such as experiment is set
Standby voltage signal wireless launcher electric power is insufficient, signal is interfered, testing equipment virtual earth, testing equipment measuring accuracy
Requirement etc. is unsatisfactory for, may all cause the inaccuracy of MOA live testing data.
In summary, system operation voltage pulsation, insulator surface filth degree, MOA running temperatures, MOA surrounding devices fortune
The influence of the various factors such as the changing of row operating mode, nonstandard testing equipment or test method is powered for arrester resistance current
There is considerable influence in test, although many units found these phenomenons, mesh during MOA current in resistance property live testings
The mechanism that the preceding country has carried out some correlative studys to above-mentioned three aspects is less, and research contents is not deep enough, it is impossible to shape
Into more effective conclusion.Power system device is restricted by power supply reliability, can not at any time be had a power failure and be carried out the survey of correlation test
Experiment card, it is impossible to which MOA these influence factors are in depth studied.
Utility model content
The purpose of this utility model is to provide a kind of metallic oxide arrester electrification test experimental study system, Neng Goutong
Cross can easily and reliably realize under different influence factors to MOA leakage currents live testing carry out deeply effectively grind
Study carefully, effectively examine the performance of different MOA leakage current live testing equipment good and bad.
The technical solution adopted in the utility model is：
A kind of metallic oxide arrester electrification test experimental study system, include the 110kV transforming plant main transformer pressures of standard
Device, bus, three-phase metal oxide arrester and pressure regulator, main transformer are connected by pressure regulator with bus, bus connection gold
Tool and three-phase metal oxide arrester, also include leakage current of an arrester testing instrument for electrified, equivalent salt density solution spraying dress
Put and infrared thermography, described leakage current of an arrester testing instrument for electrified, equivalent salt density solution spraying device and infrared heat
Imager is arranged at the side of three-phase metal oxide arrester；
Described metal oxide arrester has three-phase pillar, and the slip of each phase pillar lower section is provided with one and taken shelter from the thunder
Device pillar roller track, the structures of three arrester pillar roller tracks, size are completely just as and three is arranged in parallel；
Down conductor binding post is additionally provided near arrester pillar roller track, is grounded and connects for metal oxide arrester
Connect；Every group of arrester posts bottom roller is all fixed by an arrester pillar roller track metal neck, prevents from keeping away
The run-off the straight in moving process of thunder device.
There are two groups of arrester posts bottom rollers between described each pillar and arrester pillar roller track, for gold
Category Oxide Arrester is rolled along arrester pillar roller track towards corresponding position.
The utility model changes system operation voltage by regulator first, is carried out under different system operation voltage
The live testing of MOA leakage currents, it is existing right between research operation phase voltage rate of change and total current, current in resistance property rate of change
It should be related to, find and refine VA characteristic curve of the MOA valve blocks in small area analysis region；Secondly by equivalent salt density solution spraying
Device studies corresponding relation existing for the degree and MOA live testing errors of surface filth to MOA insulating coating surface sprayings；
Finally different periods utilize thermal infrared imager monitoring device running temperature, the rate of change of research equipment running temperature among 1 year
The existing corresponding relation between the rate of change of MOA current in resistance property；Further by setting arrester pillar roller track, make
The system can be laid out by changing the locus of MOA three-phases, to simulate the change of MOA surrounding devices operating condition, Ke Yiyan
Study carefully existing corresponding relation between the change of MOA surrounding devices operating condition and the test of MOA current in resistance property；The utility model can
Check test equipment or test method performance it is good and bad, safe to use convenient, can easily and reliably realize in different influences
MOA leakage currents live testing is carried out under factor deeply effectively to study, for practicalities such as training and teaching or verification experimental verifications
Property it is strong, and can effectively examine the performance of different MOA leakage current live testing equipment good and bad.
Brief description of the drawings
Fig. 1 is overall structure figure of the present utility model；
Fig. 2 is the single MOA pillars roller track working state schematic representation of the utility model,
Fig. 3 is selection schematic diagram in MOA pillars roller track working condition position described in the utility model.
In figure：1st, bus connection gold utensil, 2, metal oxide arrester, 3, main transformer, 4, pressure regulator, 5, arrester branch
Post roller track, 6, arrester posts bottom roller, 7, arrester pillar roller track metal neck, 8, down conductor wiring
Terminal, 9, leakage current of an arrester testing instrument for electrified, 10, equivalent salt density solution spraying device, 11, infrared thermography.
Embodiment
The utility model can apply to the simulation training of metal oxide arrester MOA leakage current live testings, examination
Test the related work such as research and the inspection of live testing equipment performance quality.
As shown in Fig. 1,2 and Fig. 3, the utility model includes a kind of metallic oxide arrester electrification test experimental study system
System, including the 110kV main transformer of transformer substation 3 of standard, bus, three-phase metal oxide arrester 2 and pressure regulator, main transformer
3 are connected by pressure regulator 4 with bus, bus connection gold utensil 1 and three-phase metal oxide arrester 2, are also included arrester and are let out
Leakage current testing instrument for electrified 9, equivalent salt density solution spraying device 10 and infrared thermography 11, described leakage current of an arrester
Testing instrument for electrified 9, equivalent salt density solution spraying device 10 and infrared thermography 11 are arranged at three-phase metal oxide and taken shelter from the thunder
The side of device 2；The described insulating coating surface of metal oxide arrester 2 can simulate different pollution levels：Pass through foundation
The good equivalent salt density solution of filthy horizontal configured in advance, is kept away three-phase metal oxide using equivalent salt density solution spraying device 10
The insulating coating surface of thunder device 2 is uniformly sprayed, and after drying in extreme moistening, slight moistening or slightly, can use arrester
Leakage current testing instrument for electrified 9 carries out the live detection of leakage current of an arrester, studies degree and the MOA band electrical measurements of surface filth
Try corresponding relation existing for error.The influence that surface filth has to MOA with point test.
Outdoor MOA insulators are vulnerable to the filthy pollution of environment, the insulator outer surface leakage current when envionmental humidity is larger
Increase, because the current in resistance property of MOA itself bodies is smaller, even if less surface leakage will also result in certain measurement error,
So that test data is bigger than normal, it is impossible to true reflection MOA situations.In addition, these surface filths equally influence the electricity of MOA valve block posts
Pressure is distributed and makes the increase of its internal leakage electric current.Therefore, the influence of surface filth causes the situation of MOA live testing bigger errors
Larger possibility be present.So the utility model provides the degree of surface filth and what corresponding pass is MOA live testings error be present
It is the experiment condition further studied.
The influence that equipment running temperature has to MOA with point test.ZnO valve plate has negative temperature system in small area analysis region
Several and MOA inner spaces are smaller, radiating condition is poor, and heat caused by active loss can make the temperature of resistor disc be higher than environment temperature
Degree, current in resistance property increase with the rise of valve block temperature.But the rate of change of the rate of change of equipment running temperature and MOA current in resistance property
Between also treat further to study in the presence of what corresponding relation, based on this, the utility model also by set experiment condition, can
The collection and accurately experiment of data are enough carried out by the utility model.
The influence that the change of MOA surrounding devices operating condition has to MOA with point test.There is actual measurement to show that some buses are taken shelter from the thunder
Device can interfere during the equipment such as outlet switch, disconnecting link, CT, pillar to lightning arrester live-line test when close to outlet, cause B
Phase current in resistance property is bigger than normal.After the switching state of outlet switch changes, lightning arrester live-line test data differences are larger.But MOA weeks
Peripheral equipment operating condition changes between the test of MOA current in resistance property and need further to study in the presence of what corresponding relation.
In addition, nonstandard testing equipment or test method may also impact to MOA live testings, such as experiment is set
Standby voltage signal wireless launcher electric power is insufficient, signal is interfered, testing equipment virtual earth, testing equipment measuring accuracy
Requirement etc. is unsatisfactory for, may all cause the inaccuracy of MOA live testing data.The utility model is by setting experimental system,
It can be tested and the collection of data.
Described metal oxide arrester 2 has three-phase pillar, and the slip of each phase pillar lower section is provided with one and kept away
Thunder device pillar roller track 5, the structures of three arrester pillar roller tracks 5, size are completely just as and three is parallel to each other and set
Put；Down conductor binding post 8 is additionally provided near arrester pillar roller track 5, for metal oxide arrester 2
Grounding connection；Every group of arrester posts bottom roller 6 is all consolidated by an arrester pillar roller track metal neck 7
It is fixed, prevent arrester run-off the straight in moving process.
Design and construction technique of the present utility model is according to 110kV main transformer of transformer substation 3, bus and the metal of standard
Oxide Arrester is designed, and main transformer 3 carries out the regulation of system operation voltage by pressure regulator 4, in different systems
Leakage current of an arrester testing instrument for electrified is used to the three-phase metal oxide arrester 2 in experimental study system under working voltage
9 carry out the live testing of leakage current, existing between research operation phase voltage rate of change and total current, current in resistance property rate of change
Corresponding relation, find and refine VA characteristic curve of the MOA valve blocks in small area analysis region.
The each phase pillar of described three-phase metal oxide arrester 2 is respectively positioned on arrester pillar roller track 5, each
There are two groups of arrester posts bottom rollers 6 between pillar and arrester pillar roller track 5, be connected removing arrester with bus
After gold utensil 1, it is easy to three-phase metal oxide arrester 2 to be rolled along arrester pillar roller track 5 towards corresponding position,
Every group of arrester posts bottom roller 6 is all fixed by an arrester pillar roller track metal neck 7, prevents from taking shelter from the thunder
Device run-off the straight in moving process.There is down conductor binding post 8 near arrester pillar roller track 5, be easy to three
Phase metal oxide arrester 2 reaches grounding connection during new position.In three-phase metal oxide arrester 2 along arrester pillar
When roller track 5 is moved to relevant position, as shown in figure 3, three relative positions for passing through the first phase metal oxide arrester 2
Three relative positions B1, B2, B3 of A1, A2, A3 and the metal oxide arrester of the second phase 2 are oppositely arranged and third phase
The relative position of three relative positions C1, C2, C3 of metal oxide arrester 2 three-phase metal oxide arrester 2 is not
Can be with position relationship between three-phase lightning protector（Just " one " font, tiltedly " one " font, " product " font, " L " type or " V " type
By between three-phase lightning protector position relationship change indirectly change arrester between each other and surrounding electromagnetic environment（Change
Operating condition）, it can now use leakage current of an arrester testing instrument for electrified 9 to carry out the live detection of leakage current of an arrester,
Study existing corresponding relation between the change of MOA surrounding devices operating condition and the test of MOA current in resistance property.
Described three-phase metal oxide arrester 2 Various Seasonal among 1 year（Choose summer, winter extreme weather conditions
Under）, the equipment running temperature of three-phase metal oxide arrester 2 is observed and recorded using infrared thermography 11, while using lightning-arrest
Device leakage current testing instrument for electrified 9 carry out leakage current of an arrester live detection, the rate of change of research equipment running temperature with
Existing corresponding relation between the rate of change of MOA current in resistance property.
The system can verify that the quality of testing equipment or test method performance, such as the voltage signal of simulated test facility
Wireless launcher electric power deficiency, signal is interfered, testing equipment virtual earth, testing equipment measuring accuracy are unsatisfactory for requiring
Deng.
The system is safe to use convenient, can easily and reliably realize under different influence factors to MOA leakage currents
Live testing deeply effectively study, practical for training and teaching or verification experimental verification etc., and can effectively examine
It is good and bad to test the performance of different MOA leakage current live testing equipment, it is safe to use convenient, it is practical for training and teaching,
With higher scientific research value.
The utility model can apply to metal oxide arrester（MOA）The simulation training of leakage current live testing,
The related work such as experimental study and the inspection of live testing equipment performance quality, can realize following major function：First, it can lead to
Cross regulator and change system operation voltage, the live testing of MOA leakage currents is carried out under different system operation voltage, is ground
Study carefully existing corresponding relation between operation phase voltage rate of change and total current, current in resistance property rate of change, find and refine MOA valve blocks
VA characteristic curve in small area analysis region；
Second, surface filth can be studied by equivalent salt density solution spraying device to MOA insulating coating surface sprayings
Corresponding relation existing for degree and MOA live testing errors；
Third, different periods utilize thermal infrared imager monitoring device running temperature among 1 year, can be run with research equipment
Existing corresponding relation between the rate of change of temperature and the rate of change of MOA current in resistance property；
Fourth, can be laid out by changing the locus of MOA three-phases, to simulate the change of MOA surrounding devices operating condition,
Existing corresponding relation between the change of MOA surrounding devices operating condition and the test of MOA current in resistance property can be studied；Fifth, can be with
The quality of check test equipment or test method performance, for example, simulated test facility voltage signal wireless launcher electric power not
Foot, signal are interfered, testing equipment virtual earth, testing equipment measuring accuracy are unsatisfactory for requirement etc..The metal oxide is taken shelter from the thunder
Device live testing experimental study system is safe to use convenient.
Therefore, the utility model can simulate the operating mode of a variety of MOA under true environment, including regulating system working voltage,
Different insulator surface filth degree are set, the infrared operations of MOA are monitored using infrared thermography by the change of season extreme weather
Temperature, change MOA surrounding devices operating conditions etc., it may be necessary to experimental test is carried out to MOA live testings testing equipment, with
Detect MOA live testings test method and examine the performance of live testing equipment good and bad.
Above-mentioned embodiment is used for illustrating the utility model, rather than the utility model is limited, in this reality
With any modifications and changes in new spirit and scope of the claims, made to the utility model, this is both fallen within
The protection domain of utility model.
Claims (2)
- A kind of 1. metallic oxide arrester electrification test experimental study system, it is characterised in that：110kV power transformations including standard Station owner's transformer（3）, bus, three-phase metal oxide arrester（2）And pressure regulator, main transformer（3）Pass through pressure regulator（4）With Bus connects, bus connection gold utensil and three-phase metal oxide arrester（2）, also include leakage current of an arrester live testing Instrument（9）, equivalent salt density solution spraying device（10）And infrared thermography（11）, described leakage current of an arrester live testing Instrument（9）, equivalent salt density solution spraying device（10）And infrared thermography（11）It is arranged at three-phase metal oxide arrester （2）Side；Described metal oxide arrester（2）With three-phase pillar, the slip of each phase pillar lower section is provided with one and taken shelter from the thunder Device pillar roller track（5）, three arrester pillar roller tracks（5）Structure, size is completely just as and three is parallel to each other Set；In arrester pillar roller track（5）Nearby it is additionally provided with down conductor binding post（8）, for metal oxide Arrester（2）Grounding connection；Every group of arrester posts bottom roller（6）All pass through an arrester pillar roller track metal card Groove（7）It is fixed, prevents arrester run-off the straight in moving process.
- 2. metallic oxide arrester electrification test experimental study system according to claim 1, it is characterised in that：It is described Each pillar and arrester pillar roller track（5）Between have two groups of arrester posts bottom rollers（6）, aoxidized for metal Thing arrester（2）Along arrester pillar roller track（5）Rolled towards corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068678.2U CN206684248U (en) | 2017-01-20 | 2017-01-20 | A kind of metallic oxide arrester electrification test experimental study system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068678.2U CN206684248U (en) | 2017-01-20 | 2017-01-20 | A kind of metallic oxide arrester electrification test experimental study system |
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| Publication Number | Publication Date |
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| CN206684248U true CN206684248U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720068678.2U Withdrawn - After Issue CN206684248U (en) | 2017-01-20 | 2017-01-20 | A kind of metallic oxide arrester electrification test experimental study system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044830A (en) * | 2019-12-31 | 2020-04-21 | 苏州华电电气股份有限公司 | Zinc oxide arrester operating characteristic live monitoring device |
-
2017
- 2017-01-20 CN CN201720068678.2U patent/CN206684248U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044830A (en) * | 2019-12-31 | 2020-04-21 | 苏州华电电气股份有限公司 | Zinc oxide arrester operating characteristic live monitoring device |
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Granted publication date: 20171128 Effective date of abandoning: 20230407 |