CN104949642B - A kind of phjytotron wire icing thickness measure and equivalent conversion method - Google Patents
A kind of phjytotron wire icing thickness measure and equivalent conversion method Download PDFInfo
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- CN104949642B CN104949642B CN201510408183.5A CN201510408183A CN104949642B CN 104949642 B CN104949642 B CN 104949642B CN 201510408183 A CN201510408183 A CN 201510408183A CN 104949642 B CN104949642 B CN 104949642B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims description 10
- 239000010985 leather Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 8
- 238000011160 research Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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Abstract
The invention discloses a kind of phjytotron wire icing thickness measure and equivalent conversion method, comprise the following steps: (1), calculating wire radius, measure traverse line quality and length；(2), wire is implemented icing；(3), measure and convert wire icing quality；(4), wire icing volume is calculated；(5), wire icing thickness is calculated；(6) step (2)～(5) Continuous plus wire icing thickness is repeated.The inventive method can the ice covering thickness of measure traverse line rapidly, continuously, measuring method is easy, efficiently, it is easy to accomplish.
Description
Technical field
The invention belongs to electrical engineering technical field, particularly relate to a kind of phjytotron wire icing thickness measure and equivalent conversion
Method.
Background technology
Being affected by special geography and climate feature, southern area of China and minority northern area electric network freezing disaster take place frequently, for grasping
Electrical network icing characteristic rule, provides theoretical foundation for the work of electrical network anti-ice, and relevant scholar both domestic and external carries out in the controlled environment chamber
Wire icing of transmission line growth test research work.One element task of this experimental study is the ice covering thickness of measure traverse line.
But, the measurement of the most conventional wire icing thickness mainly has two kinds of methods: a kind of method is measured for direct slide calliper rule etc.
The ice covering thickness of instrument measure traverse line, this measuring method have ignored the uneven icing of wire, and do not considers rime, the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai
The difference that density exists, its thickness non-equivalent ice thickness；Another kind of method is by the ice-out of unit volume, after being melted by measurement
The volume of water, be converted into the volume of ice, calculate wire ice thickness the most again, the ice thickness that this measuring method draws is more accurate,
But continuous ice-coating test can not be carried out, it may be assumed that icing once can only be measured once, it is impossible to constantly surveys during wire icing
The change of amount ice covering thickness.
Summary of the invention
The technical problem to be solved in the present invention is, the problem that can not measure ice thickness for conventional wires icing measuring method continuously, carries
Supply a kind of phjytotron wire icing thickness measure and equivalent conversion method, use the method can measurement rapidly, continuously
The ice covering thickness of wire, measuring method is easy, efficiently, it is easy to accomplish.
The technical scheme is that
A kind of phjytotron wire icing thickness measure and equivalent conversion method, comprise the following steps:
(1), wire radius, the quality of measure traverse line and length are calculated:
Cross-sectional area S according to wire0, calculating the radius r of wire, computing formula is as follows:
Utilize balance measurement wire quality M0, use leather measuring tape measure traverse line length L；
(2), wire is implemented icing:
By on wire arrangements lead frame in the controlled environment chamber, the temperature of phjytotron is regulated to preset temperature, start spray
The rainwater of 0 DEG C, makes wire start icing；
(3), measure and convert wire icing quality:
When wire icing reaches Preset Time, the wire on lead frame is taken off, measure the wire quality M after icing1, then lead
Line icing quality is M1-M0；
(4), wire icing volume V is calculated:
According to the relation of the product that quality is volume and density, calculate the icing volume V on wire:
V=(M1-M0)/ρ
In formula, ρ is iced insulator；
(5), wire icing thickness is calculated:
Calculate (equivalent ice covering thickness refers to the thickness after the ice covered is converted into standard cylindrical) according to equivalent ice covering thickness to cover
Ice body amasss V:
V=π * ((r+d)2-r2)*L
In formula, d is wire icing thickness；
By the icing volume V computing formula simultaneous in above formula and step (4), obtaining wire icing thickness d is:
Above-mentioned phjytotron wire icing thickness measure and equivalent conversion method, further comprising the steps of: the wire after measuring
It is replaced in phjytotron, repeats step (2)～step (5), wire is implemented repeatedly icing, record related data, even
Continuous measure traverse line ice covering thickness.
Preset temperature in described step (2) and the Preset Time in step (3) determine according to the weather conditions studied.
Preset temperature in described step (2) is-5 DEG C.
Preset Time in described step (3) is 1 hour.
The invention has the beneficial effects as follows:
1, the present invention proposes a kind of phjytotron wire icing thickness measure and equivalent conversion method, can in icing process,
The ice covering thickness of measure traverse line continuously, for grasping the data that wire icing propagation process provides the most accurate, full and accurate, and analyzes
The icing rule of wire, the work of electrical network anti-ice is instructed to provide theoretical foundation.
2, the technology of the present invention is used can to carry out measurement and the evaluation work of wire equivalence ice covering thickness fast and accurately.
3, the wire icing thickness conversion method that the present invention proposes with traditional by the ice-out of unit volume, after being melted by measurement
The volume of water, be converted into the volume of ice, the measuring method calculating wire ice thickness the most again is compared, and can realize continuous icing thick
Degree is measured, it is not necessary to icing again, shortens the ice-coating test time, has the strongest practicality.
4, the wire icing thickness conversion method that the present invention proposes, amount of calculation is little, and execute-in-place is simple and easy to do, tries for wire icing
Test a kind of method that research provides simplicity.
5, the method that the present invention provides, substantially increases the work efficiency of wire icing test, alleviates the test work of technical staff
Making intensity, technical research anti-icing to electrical network work serves important impetus.
5, the method that the present invention provides, it is possible to when determining temperature and the wire icing of phjytotron according to the weather conditions studied
Between, it is possible to it is applicable to the research of Different climate condition, grinds for different regions wire icing increasing law under the conditions of Different climate
Offer basic data is provided.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further elaborated.
The invention provides a kind of phjytotron wire icing thickness measure and equivalent conversion method, comprise the following steps:
(1), wire radius, the quality of measure traverse line and length are calculated:
Cross-sectional area S according to wire0, calculating the radius r of wire, computing formula is as follows:
Utilize balance measurement wire quality M0, use leather measuring tape measure traverse line length L；
(2), wire is implemented icing:
By on wire arrangements lead frame in the controlled environment chamber, the temperature of phjytotron is regulated to preset temperature, start spray
The rainwater of 0 DEG C, makes wire start icing；
(3), measure and convert wire icing quality:
When wire icing reaches Preset Time, the wire on lead frame is taken off, measure the wire quality M after icing1, then lead
Line icing quality is M1-M0；
(4), wire icing volume V is calculated:
According to the relation of the product that quality is volume and density, calculate the icing volume V on wire:
V=(M1-M0)/ρ
In formula, ρ is iced insulator；
(5), wire icing thickness is calculated:
Calculate (equivalent ice covering thickness refers to the thickness after the ice covered is converted into standard cylindrical) according to equivalent ice covering thickness to cover
Ice body amasss V:
V=π * ((r+d)2-r2)*L
In formula, d is wire icing thickness；
By the icing volume V computing formula simultaneous in above formula and step (4), obtaining wire icing thickness d is:
Above-mentioned phjytotron wire icing thickness measure and equivalent conversion method, further comprising the steps of: the wire after measuring
It is replaced in phjytotron, repeats step (2)～step (5), wire is implemented repeatedly icing, record related data, even
Continuous measure traverse line ice covering thickness.
Preset temperature in described step (2) and the Preset Time in step (3) determine according to the weather conditions studied.
Embodiment 1:
As a example by the LGJ-400/50 type wire that electrical network is conventional carries out ice-coating test.
(1), the conversion of wire radius.
Cross-sectional area S according to wire0Being 400 square millimeters, the radius r calculating wire is:
Wire quality and linear measure longimetry.
Use balance measurement test LGJ-400/50 type wire quality M0It it is 1.511 kilograms.Use leather measuring tape measure traverse line
Length L is 1.00 meters.
(2), wire is implemented icing.
By wire arrangements on the lead frame of artificial climate, adjust the temperature to about-5 DEG C, start to spray the rainwater of about 0 DEG C, make
Wire starts icing.
(3), wire icing mass measurement and conversion.
Wire icing reaches about 1 hour, is taken off by the wire on lead frame, measures the wire quality M after icing1It is 3.245 thousand
Gram, then wire icing quality is Mb=3.245 1.511=1.734 kilogram.
(4), wire icing volume conversion.
Due to the product that quality is volume and density, therefore the icing volume on wire is:
V=1.734/900=0.00193 cubic meter.
(5), wire icing thickness conversion.
Calculating principle according to equivalent ice covering thickness: equivalent ice covering thickness by being converted into the thickness after standard cylindrical by the ice covered.
The ice covering thickness thus calculating wire is:
(6) wire icing and ice covering thickness conversion are repeated.
Wire after measuring is replaced in phjytotron and carries out icing, repeats above-mentioned (2)～(5) step, every 1 hour
Measuring the wire quality after continuing icing, record related data, the wire icing thickness converting new, for wire icing increasing law
Research provides basic data.
Claims (5)
1. a phjytotron wire icing thickness measure and equivalent conversion method, it is characterised in that comprise the following steps:
(1), wire radius, the quality of measure traverse line and length are calculated:
Cross-sectional area S according to wire0, calculating the radius r of wire, computing formula is as follows:
Utilize balance measurement wire quality M0, use leather measuring tape measure traverse line length L；
(2), wire is implemented icing:
By on wire arrangements lead frame in the controlled environment chamber, the temperature of phjytotron is regulated to preset temperature, start spray
The rainwater of 0 DEG C, makes wire start icing；
(3), measure and convert wire icing quality:
When wire icing reaches Preset Time, the wire on lead frame is taken off, measure the wire quality M after icing1, then lead
Line icing quality is M1-M0；
(4), wire icing volume V is calculated:
According to the relation of the product that quality is volume and density, calculate the icing volume V on wire:
V=(M1-M0)/ρ
In formula, ρ is iced insulator；
(5), wire icing thickness is calculated:
Calculate (equivalent ice covering thickness refers to the thickness after the ice covered is converted into standard cylindrical) according to equivalent ice covering thickness to cover
Ice body amasss V:
V=π * ((r+d)2-r2)*L
In formula, d is wire icing thickness；
By the icing volume V computing formula simultaneous in above formula and step (4), obtaining wire icing thickness d is:
Phjytotron wire icing thickness measure the most according to claim 1 and equivalent conversion method, it is characterised in that
Further comprising the steps of: the wire after measuring is replaced in phjytotron, repeats step (2)～step (5), to wire
Implement repeatedly icing, record related data, continuous measure traverse line ice covering thickness.
Phjytotron wire icing thickness measure the most according to claim 1 and equivalent conversion method, it is characterised in that
Preset temperature in described step (2) and the Preset Time in step (3) determine according to the weather conditions studied.
4. according to the phjytotron wire icing thickness measure according to any one of claims 1 to 3 and equivalent conversion method, its
Being characterised by, the preset temperature in described step (2) is-5 DEG C.
5. according to the phjytotron wire icing thickness measure according to any one of claims 1 to 3 and equivalent conversion method, its
Being characterised by, the Preset Time in described step (3) is 1 hour.
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| CN106682390A (en) * | 2016-11-21 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Lead-coating ice increase simulating computation method and system |
| CN107167103B (en) * | 2017-06-26 | 2019-06-14 | 东莞理工学院 | A kind of pitch coated weight real-time monitoring system and method |
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| CN101672666B (en) * | 2008-09-10 | 2013-03-20 | 华东电力试验研究院有限公司 | Test method for icing and deicing of transmission line and test system thereof |
| CN102168962A (en) * | 2010-12-13 | 2011-08-31 | 云南电力试验研究院(集团)有限公司 | Optimized method for estimating ice coating thickness of electric transmission line |
| CN103376083A (en) * | 2012-04-23 | 2013-10-30 | 贵州电力试验研究院 | Power transmission line icing intelligent on-line monitoring system |
| CN103033216A (en) * | 2012-12-03 | 2013-04-10 | 西安工程大学 | On-line monitoring system and monitoring method for icing density of electric transmission line |
| CN103017714A (en) * | 2012-12-10 | 2013-04-03 | 西安工程大学 | Online monitoring system and monitoring method for equivalent icing thicknesses of power transmission lines |
| CN103335623A (en) * | 2013-06-13 | 2013-10-02 | 国家电网公司 | Method for observing thickness of ice coating on power transmission line |
| CN104091046B (en) * | 2014-06-16 | 2017-06-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of tension tower conducting wire ice covering thickness monitoring method and system based on weight method |
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