CN103196588A - Method for obtaining internal temperature of parallel groove clamp - Google Patents
Method for obtaining internal temperature of parallel groove clamp Download PDFInfo
- Publication number
- CN103196588A CN103196588A CN2013101080600A CN201310108060A CN103196588A CN 103196588 A CN103196588 A CN 103196588A CN 2013101080600 A CN2013101080600 A CN 2013101080600A CN 201310108060 A CN201310108060 A CN 201310108060A CN 103196588 A CN103196588 A CN 103196588A
- Authority
- CN
- China
- Prior art keywords
- parallel groove
- groove clamp
- temperature
- internal temperature
- clamp
- 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
Links
Images
Abstract
The invention discloses a method for obtaining internal temperature of a parallel groove clamp. The method comprises the steps: S1, layering the temperature of the parallel groove clamp, wherein particularly, the temperature of a connecting portion of the parallel groove clamp and a guide line is the internal temperature, and the temperature of the other portion of the parallel groove clamp is the surface temperature; S2, building a one-dimension thermal path model according to a principle of a heat transfer theory; and S3, obtaining the internal temperature of the parallel groove clamp according to the one-dimension thermal path model of the parallel groove clamp. According to the one-dimension model of the principle of the heat transfer theory, through measurement of environment temperature, the surface temperature of the parallel groove clamp and each thermal resistance parameter, the internal temperature of the parallel groove clamp is obtained.
Description
Technical field
Transmission line of electricity parallel groove clamp temperature survey of the present invention field, particularly a kind of method that obtains the parallel groove clamp internal temperature.
Background technology
Along with increasing sharply of electricity consumption client quantity, line load increases substantially, and causes the at full capacity long-term or overload operation of circuit.The problem of strain insulator shaft tower parallel groove clamp heating usually takes place in transmission line of electricity in this case, but some important line can not have a power failure immediately and handle, and has influenced the reliable and secure property of transmission line of electricity.By the investigation at scene, the statistical data of wire clamp heating in recent years, for example analyzing, the drainage parallel groove clamp takes place under overheated even the crack conditions for the reliable and secure influence of power system power supply.
In the The Study on Fault of transmission line of electricity wire clamp, particularly important for the research of wire clamp heating.Therefore, accurately the temperature of wire clamp is carried out layering, be conducive to wire clamp is carried out more deep research, can calculate effectively for the heating bottleneck point of wire clamp itself simultaneously, solve the problem that the heating of transmission line of electricity wire clamp causes accidents such as breaking, instruct operation and the maintenance of transmission line of electricity wire clamp.Therefore the research for the wire clamp heating is very necessary, and the bottleneck point temperature of accurate and effective calculating wire clamp is the key of problem.
Summary of the invention
In order to overcome the shortcoming and deficiency that prior art exists, the invention provides a kind of method that obtains the parallel groove clamp internal temperature
The present invention adopts following technical scheme:
A kind of method that obtains the parallel groove clamp internal temperature comprises the steps:
S1 is specially the thermal stratification of parallel groove clamp: the temperature that parallel groove clamp and wire interconnecting piece divide is internal temperature, and the temperature of parallel groove clamp remainder is surface temperature;
S2 sets up the hot road of the one dimension model of parallel groove clamp according to the principle of thermal conduction study;
S3 obtains the internal temperature of parallel groove clamp according to the hot road of the one dimension model of parallel groove clamp.
Described step S3 obtains the internal temperature of parallel groove clamp according to the hot road of the one dimension model of parallel groove clamp, is specially:
S31 measures surface temperature, the temperature of environment, the thermal resistance of parallel groove clamp, the parallel groove clamp surface environment thermal resistance of parallel groove clamp;
S32 is according to formula
Obtain the internal temperature of parallel groove clamp;
In the following formula: T
1Expression parallel groove clamp internal temperature, T
2The surface temperature of expression parallel groove clamp, T
3The temperature of expression parallel groove clamp environment of living in, R
1The thermal resistance of expression parallel groove clamp, R
2Expression parallel groove clamp surface environment thermal resistance, wherein, R is the lead AC resistance.
Beneficial effect of the present invention:
(1) utilizes this method that the fault that wire clamp from now on may occur is assessed, solved the problem that accurately to judge the bulk temperature of wire clamp in the prior art.
(2) the invention provides a kind of experimental basis of studying the physical-property parameter of wire clamp own.
Description of drawings
Fig. 1 is transmission line of electricity parallel groove clamp thermal stratification synoptic diagram among the present invention;
Fig. 2 is the hot road of the parallel groove clamp illustraton of model that the present invention sets up.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
A kind of method that obtains the parallel groove clamp internal temperature comprises the steps:
S1 as shown in Figure 1, is specially the thermal stratification of parallel groove clamp: the temperature that parallel groove clamp and wire interconnecting piece divide is internal temperature, and the temperature of parallel groove clamp remainder and surface temperature differ within 1 ℃, therefore all is considered as surface temperature;
S2 as shown in Figure 2, sets up the hot road of the one dimension model of parallel groove clamp according to the principle of thermal conduction study;
Temperature T
1Expression wire clamp internal temperature, T
2Expression wire clamp surface temperature, T
3The temperature of expression wire clamp environment of living in, Φ
1Be expressed as lead self-heating amount, i.e. the internal heat resource of wire clamp, size is Φ
1=I
2R, wherein, I represents to flow through the size of current of wire clamp, and R represents the AC resistance of lead, R
1The thermal resistance of expression wire clamp, R
2Expression wire clamp surface environment thermal resistance, wherein R
1, R
2Record by test of many times.
Since under the alive situation of lead according to Ohm law, lead itself is thermal source, and the heat of thermal source transfers heat to the air through behind the wire clamp from lead, the hot road model of setting up according to the order of heat flow, the relation of each parameter in the above model, as the isoparametric relation of the resistor current in the circuit model, the relation of voltage, current source and resistance in the temperature in the model of hot road, thermal source and the thermal resistance corresponding circuits.
S3 obtains the internal temperature of parallel groove clamp according to the hot road of the one dimension model of parallel groove clamp, is specially:
S31 measures surface temperature, the temperature of environment, the thermal resistance of parallel groove clamp, the parallel groove clamp surface environment thermal resistance of parallel groove clamp;
S32 is according to formula
Obtain the internal temperature of parallel groove clamp;
R in the formula
1And R
2All through repeatedly measuring, and both variation ranges are little.
In the following formula: T
1Expression parallel groove clamp internal temperature, T
2The temperature on expression parallel groove clamp surface, T
3The temperature of expression parallel groove clamp environment of living in, R
1The thermal resistance of expression parallel groove clamp, R
2Expression parallel groove clamp surface environment thermal resistance.
The present invention is the one-dimensional model of setting up according to heat transfer principle, obtains the parallel groove clamp internal temperature by measures ambient temperature and wire clamp surface temperature and each thermal resistance parameters.
Above-described embodiment is preferred implementation of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1. a method that obtains the parallel groove clamp internal temperature is characterized in that, comprises the steps:
S1 is specially the thermal stratification of parallel groove clamp: the temperature that parallel groove clamp and wire interconnecting piece divide is internal temperature, and the temperature of parallel groove clamp remainder is surface temperature;
S2 sets up the hot road of the one dimension model of parallel groove clamp according to the principle of thermal conduction study;
S3 obtains the internal temperature of parallel groove clamp according to the hot road of the one dimension model of parallel groove clamp.
2. a kind of method that obtains the parallel groove clamp internal temperature according to claim 1 is characterized in that, described step S3 obtains the internal temperature of parallel groove clamp according to the hot road of the one dimension model of parallel groove clamp, is specially:
S31 measures surface temperature, the temperature of environment, the thermal resistance of parallel groove clamp, the parallel groove clamp surface environment thermal resistance of parallel groove clamp;
S32 is according to formula
Obtain the internal temperature of parallel groove clamp;
In the following formula: T
1Expression parallel groove clamp internal temperature, T
2The temperature on expression parallel groove clamp surface, T
3The temperature of expression parallel groove clamp environment of living in, R
1The thermal resistance of expression parallel groove clamp, R
2Expression parallel groove clamp surface environment thermal resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101080600A CN103196588A (en) | 2013-03-29 | 2013-03-29 | Method for obtaining internal temperature of parallel groove clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101080600A CN103196588A (en) | 2013-03-29 | 2013-03-29 | Method for obtaining internal temperature of parallel groove clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103196588A true CN103196588A (en) | 2013-07-10 |
Family
ID=48719285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101080600A Pending CN103196588A (en) | 2013-03-29 | 2013-03-29 | Method for obtaining internal temperature of parallel groove clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196588A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525258A (en) * | 2016-11-30 | 2017-03-22 | 国网山东省电力公司东明县供电公司 | Equipment wire clamp, equipment wire clamp connecting structure and power line fault indication method |
| CN109313089A (en) * | 2016-04-19 | 2019-02-05 | 弗劳恩霍夫应用研究促进协会 | Device and method for determining convective heat transfer coefficient |
| CN112964389A (en) * | 2021-05-10 | 2021-06-15 | 国网江西省电力有限公司电力科学研究院 | Elbow type cable head fault early warning method and system based on distributed temperature measurement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2140923A (en) * | 1983-06-01 | 1984-12-05 | Univ Manchester | Resistance thermometer testing |
| JPS60233521A (en) * | 1984-05-07 | 1985-11-20 | Central Res Inst Of Electric Power Ind | Internal temperature estimating method of power cable |
| JP2002131142A (en) * | 2000-10-19 | 2002-05-09 | Hitachi Cable Ltd | Method of estimating temperature of cable conductor |
| CN101046501A (en) * | 2005-06-10 | 2007-10-03 | 清华大学 | Cable running safety monitoring method |
| CN102313852A (en) * | 2011-08-01 | 2012-01-11 | 武汉理工大学 | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof |
| CN102323496A (en) * | 2011-05-31 | 2012-01-18 | 广东电网公司广州供电局 | System for monitoring current-carrying capacity of cable conductor and method |
-
2013
- 2013-03-29 CN CN2013101080600A patent/CN103196588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2140923A (en) * | 1983-06-01 | 1984-12-05 | Univ Manchester | Resistance thermometer testing |
| JPS60233521A (en) * | 1984-05-07 | 1985-11-20 | Central Res Inst Of Electric Power Ind | Internal temperature estimating method of power cable |
| JP2002131142A (en) * | 2000-10-19 | 2002-05-09 | Hitachi Cable Ltd | Method of estimating temperature of cable conductor |
| CN101046501A (en) * | 2005-06-10 | 2007-10-03 | 清华大学 | Cable running safety monitoring method |
| CN102323496A (en) * | 2011-05-31 | 2012-01-18 | 广东电网公司广州供电局 | System for monitoring current-carrying capacity of cable conductor and method |
| CN102313852A (en) * | 2011-08-01 | 2012-01-11 | 武汉理工大学 | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof |
Non-Patent Citations (3)
| Title |
|---|
| 刘刚等: "根据电缆表面温度推算导体温度的热路简化模型暂态误差分析", 《电网技术》, vol. 35, no. 4, 30 April 2011 (2011-04-30), pages 212 - 217 * |
| 赖育庭等: "基于热网络模型的电缆热场灵敏度分析方法", 《南方电网技术》, vol. 5, no. 2, 30 April 2011 (2011-04-30), pages 51 - 54 * |
| 雷鸣等: "采用Laplace方程的单芯电缆线芯温度动态计算", 《高电压技术》, vol. 36, no. 5, 31 May 2010 (2010-05-31), pages 1150 - 1154 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313089A (en) * | 2016-04-19 | 2019-02-05 | 弗劳恩霍夫应用研究促进协会 | Device and method for determining convective heat transfer coefficient |
| CN106525258A (en) * | 2016-11-30 | 2017-03-22 | 国网山东省电力公司东明县供电公司 | Equipment wire clamp, equipment wire clamp connecting structure and power line fault indication method |
| CN106525258B (en) * | 2016-11-30 | 2019-04-30 | 国网山东省电力公司东明县供电公司 | Device clamp, device clamp connection structure and electric power wiring trouble indication method |
| CN112964389A (en) * | 2021-05-10 | 2021-06-15 | 国网江西省电力有限公司电力科学研究院 | Elbow type cable head fault early warning method and system based on distributed temperature measurement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105718694B (en) | Ther mal network parameter identification method based on IGBT junction temperature information | |
| CN102955088B (en) | A kind of zero resistance insulator detection method based on finite element data storehouse | |
| CN204027732U (en) | Transmission line wire temperature detection device | |
| CN103792476A (en) | Thermal resistance measuring method for semiconductor device | |
| CN105242189A (en) | IGBT health state monitoring method based on saturation voltage drop of emitter collector and voidage of solder layer | |
| CN105004949A (en) | Test method and test device of maximum current-carrying capacity of strain clamp running on line | |
| CN103196588A (en) | Method for obtaining internal temperature of parallel groove clamp | |
| CN106019070B (en) | A kind of copper-aluminium transition connection terminal working condition on-Line Monitor Device and monitoring method | |
| CN203519526U (en) | Simulation heat source for radiator detection | |
| CN103033291B (en) | A kind of circle paper tinsel thermoelectric pile heat flux sensor | |
| CN104181416B (en) | A kind of direct current grounding pole temperature characteristic detection method | |
| CN109000825A (en) | A kind of cable and its terminal core temperature computation method containing harmonic current | |
| CN203773016U (en) | Apparatus for testing thermal resistance of SMD-0.5 packaging power semiconductor device | |
| CN105676015A (en) | Transmission line carrying capacity calculation method | |
| CN209559367U (en) | A kind of Internet of Things breaker line temperature high-precision detection device | |
| CN103336024A (en) | Thermoelectric performance testing system for thermoelectric material | |
| CN202332865U (en) | Photovoltaic confluence and current monitoring structure | |
| CN203837827U (en) | High temperature resistance wireless temperature sensor | |
| CN204405215U (en) | Copper sheet wireless temperature measure module and use its wireless temperature measurement system, wireless temperature-measuring network management system | |
| CN204203363U (en) | A kind of electric resistance measuring apparatus | |
| CN204925001U (en) | Metal radiator heat dispersion testing arrangement | |
| CN208902285U (en) | A kind of temperature difference takes electric type radio temperature sensor | |
| CN204538376U (en) | A kind of cable end | |
| CN106841764B (en) | A method of output electric current measure is realized using MOSFET pipe internal resistance | |
| CN203310424U (en) | Overheating protection telemetry terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |