CN102879666A - Pollution test method for alternating current lightning arrester - Google Patents
Pollution test method for alternating current lightning arrester Download PDFInfo
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- CN102879666A CN102879666A CN2012103103284A CN201210310328A CN102879666A CN 102879666 A CN102879666 A CN 102879666A CN 2012103103284 A CN2012103103284 A CN 2012103103284A CN 201210310328 A CN201210310328 A CN 201210310328A CN 102879666 A CN102879666 A CN 102879666A
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Abstract
The invention provides a pollution test method for an alternating current lightning arrester. The method comprises the following steps of: flushing the alternating current lightning arrester, and coating pollution liquid on the alternating current lightning arrester; after a pollution layer is dried, applying continuous running voltage to the alternating current lightning arrester, and starting a fog generator; continuously applying the continuous running voltage to the alternating current lightning arrester until risk of external flashover and internal thermal collapse are eliminated; performing treatment on the alternating current lightning arrester according to the steps 1, 2, and 3; and evaluating the pollution test. By the method, an actual running situation of the alternating current lightning arrester can be simulated, and the method is feasible; moreover, the thermal stability of the alternating current lightning arrester can be accurately judged; the anti-pollution capacity of the alternating current lightning arrester can be comprehensively and accurately checked; and the test method is simple and reliable and is easy to execute.
Description
Technical field
The present invention relates to the pollution test method, be specifically related to a kind of alternating-current lightning arrestor pollution test method.
Background technology
National standard has clear to artificial pollution test's method of alternating-current lightning arrestor at present, and its principal feature and test routine are roughly as follows:
1, adopt the method for " spraying " to apply soiling solution;
2, test is divided into 4 series, and each series comprises 8 circulations; Each series applies in the soiling solution 3min at the lightning arrester of cleaning and applies voltage, applies first the continuous running voltage of lightning arrester in each circulation, continues 1min; Then be elevated to rapidly 90% of lightning arrester rated voltage, be reduced to rapidly again the continuous running voltage of lightning arrester behind the lasting 2s;
3, cleaning test product after each series is finished, then the brushing soiling solution begins next series;
4, last series is finished the continuous running voltage 30min of after-applied lightning arrester, temperature, current in resistance property or the internal power consumption of pressure dwell monitoring lightning arrester; When monitored value reduces gradually or tends towards stability, then think to test and pass through in the end pressurizeing during the 30min.
This test method major defect is as follows:
1, at present the pollution test of the equipment such as state's inner insulator adopts the method for " brushing " to apply soiling solution more, and " spraying " applies the method for filthy liquid and extensively do not promoted at home; For the lightning arrester that exchanges the voltage levels such as 1000kV, though " spraying " method also very difficult finishing at short notice apply soiling solution, part soiling solution drying when causing applying voltage.
2, later stage lightning arrester sleeve surface soiling solution drying weakens the examination ability of lightning arrester external insulation.
When 3, filthy accident occurs reality in the electric system, generally be moistening gradually at charged situation lower surface pollution layer; And test method is the moistening pollution layer of elder generation at present, then applies voltage, is not inconsistent with actual conditions.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of alternating-current lightning arrestor pollution test method, can analog AC lightning arrester practical operation situation, more can accurately be to external insulation tolerance and the internal heat stability of alternating-current lightning arrestor under filthy condition.
In order to realize the foregoing invention purpose, the present invention takes following technical scheme:
A kind of alternating-current lightning arrestor pollution test method said method comprising the steps of:
Step 1: wash alternating-current lightning arrestor and apply soiling solution at alternating-current lightning arrestor;
Step 2: the continuous running voltage of the after-applied alternating-current lightning arrestor of pollution layer bone dry, and start fog generator;
Step 3: circulation applies the continuous running voltage of alternating-current lightning arrestor, until the danger of external flashover and internal heat collapse is got rid of;
Step 4: process again according to step 1,2 and 3 pairs of alternating-current lightning arrestors;
Step 5: estimate pollution test.
In the described step 1, apply soiling solution and take spraying method or painting way, described soiling solution is prepared from by porcelain earth and the sodium chloride ratio according to 5:1 or 6:1.
In the described step 2, be not less than 8h the drying time of described pollution layer, and at the uniform velocity apply the continuous running voltage of alternating-current lightning arrestor.
In the described step 3,0.9 times of rated voltage and continuous running voltage alternate cycles are applied to alternating-current lightning arrestor, and applying the duration is respectively 2s and 1min.
The dangerous criterion of getting rid of of described external flashover is: monitoring is by the total current of alternating-current lightning arrestor during on-test, and the total current by lightning arrester reduces or no longer rising gradually behind the 30min at least, and the current impulse greater than peak value 500mA no longer occurs.
The dangerous criterion of getting rid of of described internal heat collapse is: the internal temperature of monitoring alternating-current lightning arrestor during on-test, the internal temperature of alternating-current lightning arrestor reduces or no longer rising gradually behind the 30min at least, and maximum temperature is no more than 60 ℃.
Each unit joint of described alternating-current lightning arrestor is chosen at least three location on AC lightning arrester internal temperatures and is monitored.
Internal temperature by fiber-optical grating temperature sensor monitoring alternating-current lightning arrestor, used optical fiber is the trial voltage of 1.2 times of tolerances, high temperature and the creepage optical fiber that should be not less than 50mm/kV than distance that tolerance is not less than 300 ℃, described outer fiber is enclosed with fire proofing, and described fire proofing comprises natural rubber and tygon.
In the described step 4, carry out 3 times or 4 circular treatment according to step 1,2 and 3 pairs of alternating-current lightning arrestors.
In the described step 5, if alternating-current lightning arrestor is thermally-stabilised, and external flashover in duration of test, do not occur, and confirm on inspection that flashover does not occur resistor disc or when damaging, then think stand the test.
Compared with prior art, beneficial effect of the present invention is: the alternating-current lightning arrestor artificial pollution test method energy simulating actual conditions that the present invention proposes; Test method is more practical; Thermal stability that can more accurate judgement alternating-current lightning arrestor; Can examine exactly more comprehensively the dirty ability of resistant of alternating-current lightning arrestor; Test method is simple and reliable, easily carries out.
Description of drawings
Fig. 1 is alternating-current lightning arrestor pollution test embodiment of the method process flow diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment 1
Such as Fig. 1, a kind of alternating-current lightning arrestor pollution test method said method comprising the steps of:
Step 1: wash alternating-current lightning arrestor and apply soiling solution at alternating-current lightning arrestor;
Step 2: the continuous running voltage of the after-applied alternating-current lightning arrestor of pollution layer bone dry, and start fog generator;
Step 3: circulation applies the continuous running voltage of alternating-current lightning arrestor, until the danger of external flashover and internal heat collapse is got rid of;
Step 4: process again according to step 1,2 and 3 pairs of alternating-current lightning arrestors;
Step 5: estimate pollution test.
In the described step 1, apply soiling solution and take spraying method or painting way, described soiling solution is prepared from by porcelain earth and the sodium chloride ratio according to 5:1.
In the described step 2, be not 10h the drying time of described pollution layer, and at the uniform velocity apply the continuous running voltage of alternating-current lightning arrestor.
In the described step 3,0.9 times of rated voltage (0.9Ur) and continuous running voltage (Uc) alternate cycles are applied to alternating-current lightning arrestor, and applying the duration is respectively 2s and 1min.
The dangerous criterion of getting rid of of described external flashover is: monitoring is by the total current of alternating-current lightning arrestor during on-test, and the total current by alternating-current lightning arrestor behind the 45min reduces or no longer rising gradually, and the current impulse greater than peak value 500mA no longer occurs.
The dangerous criterion of getting rid of of described internal heat collapse is: the internal temperature of monitoring alternating-current lightning arrestor during on-test, the internal temperature of alternating-current lightning arrestor reduces or no longer rising gradually behind the 45min, and maximum temperature is no more than 60 ℃.
Each unit selected parts of described alternating-current lightning arrestor are got three location on AC lightning arrester internal temperatures and are monitored.
Internal temperature by fiber-optical grating temperature sensor monitoring alternating-current lightning arrestor, used optical fiber is the trial voltage of 1.2 times of tolerances, high temperature and the creepage optical fiber that should be not less than 50mm/kV than distance that tolerance is not less than 300 ℃, described outer fiber is enclosed with fire proofing, and described fire proofing comprises natural rubber and tygon.
In the described step 4, carry out circular treatment 4 times according to step 1,2 and 3 pairs of alternating-current lightning arrestors.
In the described step 5, if alternating-current lightning arrestor is thermally-stabilised, and external flashover in duration of test, do not occur, and confirm on inspection that flashover does not occur resistor disc or when damaging, then think stand the test.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (11)
1. alternating-current lightning arrestor pollution test method is characterized in that: said method comprising the steps of:
Step 1: wash alternating-current lightning arrestor and apply soiling solution at alternating-current lightning arrestor;
Step 2: the continuous running voltage of the after-applied alternating-current lightning arrestor of pollution layer bone dry, and start fog generator;
Step 3: circulation applies the continuous running voltage of alternating-current lightning arrestor, until the danger of external flashover and internal heat collapse is got rid of;
Step 4: process again according to step 1,2 and 3 pairs of alternating-current lightning arrestors;
Step 5: estimate pollution test.
2. alternating-current lightning arrestor pollution test method according to claim 1 is characterized in that: in the described step 1, apply soiling solution and take spraying method or painting way.
3. alternating-current lightning arrestor pollution test method according to claim 2 is characterized in that: described soiling solution is prepared from by porcelain earth and the sodium chloride ratio according to 5:1 or 6:1.
4. alternating-current lightning arrestor pollution test method according to claim 1, it is characterized in that: in the described step 2, be not less than 8h the drying time of described pollution layer, and at the uniform velocity apply the continuous running voltage of alternating-current lightning arrestor.
5. alternating-current lightning arrestor pollution test method according to claim 1 is characterized in that: in the described step 3,0.9 times of rated voltage and continuous running voltage alternate cycles are applied to alternating-current lightning arrestor, and applying the duration is respectively 2s and 1min.
6. alternating-current lightning arrestor pollution test method according to claim 1, it is characterized in that: the dangerous criterion of getting rid of of described external flashover is: monitoring is by the total current of alternating-current lightning arrestor during on-test, at least the total current by alternating-current lightning arrestor reduces or no longer rising gradually behind the 30min, and the current impulse greater than peak value 500mA no longer occurs.
7. alternating-current lightning arrestor pollution test method according to claim 1, it is characterized in that: the dangerous criterion of getting rid of of described internal heat collapse is: the internal temperature of monitoring alternating-current lightning arrestor during on-test, at least the internal temperature of alternating-current lightning arrestor reduces or no longer rising gradually behind the 30min, and maximum temperature is no more than 60 ℃.
8. alternating-current lightning arrestor pollution test method according to claim 7 is characterized in that: each unit joint of described alternating-current lightning arrestor is chosen at least three location on AC lightning arrester internal temperatures and is monitored.
9. alternating-current lightning arrestor pollution test method according to claim 8, it is characterized in that: by the internal temperature of fiber-optical grating temperature sensor monitoring alternating-current lightning arrestor, used optical fiber is the trial voltage of 1.2 times of tolerances, high temperature and the creepage optical fiber that should be not less than 50mm/kV than distance that tolerance is not less than 300 ℃, described outer fiber is enclosed with fire proofing, and described fire proofing comprises natural rubber and tygon.
10. alternating-current lightning arrestor pollution test method according to claim 1 is characterized in that: in the described step 4, carry out 3 times or 4 circular treatment according to step 1,2 and 3 pairs of alternating-current lightning arrestors.
11. alternating-current lightning arrestor pollution test method according to claim 1, it is characterized in that: in the described step 5, if alternating-current lightning arrestor is thermally-stabilised, and external flashover in duration of test, do not occur, and confirm on inspection that flashover does not occur resistor disc or when damaging, then think stand the test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103103284A CN102879666A (en) | 2012-08-28 | 2012-08-28 | Pollution test method for alternating current lightning arrester |
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| CN2012103103284A CN102879666A (en) | 2012-08-28 | 2012-08-28 | Pollution test method for alternating current lightning arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190084A (en) * | 2020-02-13 | 2020-05-22 | 云南电网有限责任公司曲靖供电局 | Pollution test method for lightning arrester |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202285037U (en) * | 2011-10-26 | 2012-06-27 | 沈阳工业大学 | 10kv insulator artificial contamination laboratory based on ultraviolet imagery |
| CN102645618A (en) * | 2012-04-16 | 2012-08-22 | 浙江清科电力科技有限公司 | Intelligent detection method and detection system device for contaminated insulator |
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- 2012-08-28 CN CN2012103103284A patent/CN102879666A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202285037U (en) * | 2011-10-26 | 2012-06-27 | 沈阳工业大学 | 10kv insulator artificial contamination laboratory based on ultraviolet imagery |
| CN102645618A (en) * | 2012-04-16 | 2012-08-22 | 浙江清科电力科技有限公司 | Intelligent detection method and detection system device for contaminated insulator |
Non-Patent Citations (1)
| Title |
|---|
| 张搏宇等: "污秽条件下避雷器的内部温升研究", 《高电压技术》, vol. 37, no. 8, 31 August 2011 (2011-08-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190084A (en) * | 2020-02-13 | 2020-05-22 | 云南电网有限责任公司曲靖供电局 | Pollution test method for lightning arrester |
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Application publication date: 20130116 |