CN107978438A - A kind of dry-type iron-core reactor temperature distribution measuring method and device - Google Patents

A kind of dry-type iron-core reactor temperature distribution measuring method and device Download PDF

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Publication number
CN107978438A
CN107978438A CN201711166911.1A CN201711166911A CN107978438A CN 107978438 A CN107978438 A CN 107978438A CN 201711166911 A CN201711166911 A CN 201711166911A CN 107978438 A CN107978438 A CN 107978438A
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CN
China
Prior art keywords
temperature
dry
core reactor
type iron
winding
Prior art date
Application number
CN201711166911.1A
Other languages
Chinese (zh)
Inventor
田肖飞
杨贤
马志钦
孙文星
周丹
杨翠茹
赵东生
Original Assignee
广东电网有限责任公司电力科学研究院
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Application filed by 广东电网有限责任公司电力科学研究院 filed Critical 广东电网有限责任公司电力科学研究院
Priority to CN201711166911.1A priority Critical patent/CN107978438A/en
Publication of CN107978438A publication Critical patent/CN107978438A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Adaptations of thermometers for specific purposes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Adaptations of thermometers for specific purposes
    • G01K13/10Adaptations of thermometers for specific purposes for measuring temperature within piled or stacked materials
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/40Structural association with built-in electric component, e.g. fuse
    • H01F27/402Association of measuring or protective means
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/40Structural association with built-in electric component, e.g. fuse
    • H01F27/402Association of measuring or protective means
    • H01F2027/406Temperature sensor or protection

Abstract

The invention discloses a kind of dry-type iron-core reactor temperature distribution measuring method and device, by carrying out multi-temperature point measurement to dry-type iron-core reactor, complete the measurement to whole dry-type iron-core reactor thermo parameters method, it make use of the symmetrical characteristic of reactor self structure, temperature survey is carried out in middle winding and side column winding, both temperature field can fully and effectively be measured, also the quantity of sensor needed for reducing to the full extent, solve the prior art and inspection is carried out by way of infrared scan to carry out temperature distributing measuring to dry-type iron-core reactor, it can only reflect the outermost temperature of winding and exposed iron core temperature, simply measure the temperature of certain point inside dry-type iron-core reactor, caused measurement accuracy difference and the high technical problem of measurement cost.

Description

A kind of dry-type iron-core reactor temperature distribution measuring method and device

Technical field

The present invention relates to power test field, more particularly to a kind of dry-type iron-core reactor temperature distribution measuring method and dress Put.

Background technology

Reactor is that power grid realizes reactive balance, the limitation widened important equipment of electric network fault.Dry-type iron-core reactor is adopted With air and epoxy resin compound inslation, have small, small to surrounding environment electromagnetic interference, insulation grade anti-corrosion is high, it is fire-retardant, The advantages that explosion-proof, non-maintaining, easy to install, obtain electric system and the favor of industrial user.

But in recent years, since 10~35kV dry-type iron-core reactors quality problems, running environment problem cause electricity in power grid The problem of situation of anti-device obstacle or defect happens occasionally, and local temperature rise is excessive becomes influences the most general of reactor running quality All over the defects of, and as run time increases, insulate and accelerated ageing and easily trigger burning fault, seriously affect system fortune Row quality of voltage.Tens of iron-core reactor spontaneous combustion failures are particularly recurred in power grid in recent years, cause each side to dry The worry of formula iron-core reactor operational reliability.

The prior art carries out inspection to carry out temperature distributing measuring to dry-type iron-core reactor by way of infrared scan, It can only reflect the outermost temperature of winding and exposed iron core temperature, simply measure the temperature of certain point inside dry-type iron-core reactor Degree, result in measurement accuracy difference and the high technical problem of measurement cost.

The content of the invention

The present invention provides a kind of dry-type iron-core reactor temperature distribution measuring method and device, for solving the prior art Inspection is carried out by way of infrared scan to carry out temperature distributing measuring to dry-type iron-core reactor, can only reflect winding outermost The temperature and exposed iron core temperature of layer, simply measure the temperature of certain point inside dry-type iron-core reactor, caused measurement essence Degree difference and the high technical problem of measurement cost.

A kind of dry-type iron-core reactor temperature distribution measuring method provided by the invention, including:

Arrange and preset along the axial direction of iron-core reactor on middle winding and the side column winding of dry-type iron-core reactor The temperature sensor of number;

The temperature field test of the iron-core reactor is carried out by multichannel temperature measuring instrument.

Preferably, it is described on middle winding and the side column winding of dry-type iron-core reactor along the axial direction side of iron-core reactor Specifically included to the temperature sensor of arrangement predetermined number:

It is evenly arranged on middle winding and the side column winding of dry-type iron-core reactor along the axial direction of iron-core reactor The temperature sensor of predetermined number.

A kind of dry-type iron-core reactor temperature distribution measuring apparatus provided by the invention, including:

Module is arranged, for the axial direction on middle winding and the side column winding of dry-type iron-core reactor along iron-core reactor The temperature sensor of predetermined number is arranged in direction;

Test module, for carrying out the temperature field test of the iron-core reactor by multichannel temperature measuring instrument.

Preferably, the arrangement module is specifically used for:

It is evenly arranged on middle winding and the side column winding of dry-type iron-core reactor along the axial direction of iron-core reactor The temperature sensor of predetermined number.

As can be seen from the above technical solutions, the present invention has the following advantages:

A kind of dry-type iron-core reactor temperature distribution measuring method provided by the invention, including:In dry-type iron-core reactor Middle winding and side column winding on along iron-core reactor axial direction arrangement predetermined number temperature sensor;By more logical Channel temp measuring instrument carries out the temperature field test of the iron-core reactor.

In the present invention, by carrying out multi-temperature point measurement to dry-type iron-core reactor, complete to whole dry-type iron-core reactance The measurement of device thermo parameters method, make use of the symmetrical characteristic of reactor self structure, and temperature is carried out in middle winding and side column winding Degree measurement, both can fully and effectively measure temperature field, also reduce the quantity of required sensor, solution to the full extent The prior art of having determined carries out inspection to carry out temperature distributing measuring to dry-type iron-core reactor by way of infrared scan, can only Reflect the outermost temperature of winding and exposed iron core temperature, simply measure the temperature of certain point inside dry-type iron-core reactor, Caused measurement accuracy difference and the high technical problem of measurement cost.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other attached drawings according to these attached drawings.

Fig. 1 is a kind of flow of one embodiment of dry-type iron-core reactor temperature distribution measuring method provided by the invention Schematic diagram;

Fig. 2 is winding air passage among one of a kind of dry-type iron-core reactor temperature distribution measuring method provided by the invention Thermo parameters method figure;

Fig. 3 is winding inner side among one of a kind of dry-type iron-core reactor temperature distribution measuring method provided by the invention Thermo parameters method figure;

Fig. 4 is winding appearance among one of a kind of dry-type iron-core reactor temperature distribution measuring method provided by the invention The thermo parameters method figure of face position;

Fig. 5 is an a kind of side column winding air passage of dry-type iron-core reactor temperature distribution measuring method provided by the invention Thermo parameters method figure;

Fig. 6 is an a kind of winding internal layer temperature of dry-type iron-core reactor temperature distribution measuring method provided by the invention Field pattern;

Fig. 7 is that an a kind of simulation result of dry-type iron-core reactor temperature distribution measuring method provided by the invention is illustrated Figure;

Fig. 8 is a kind of structure of one embodiment of dry-type iron-core reactor temperature distribution measuring apparatus provided by the invention Schematic diagram.

Embodiment

An embodiment of the present invention provides a kind of dry-type iron-core reactor temperature distribution measuring method and device, solve existing Technology carries out inspection to carry out temperature distributing measuring to dry-type iron-core reactor by way of infrared scan, can only reflect winding Outermost temperature and exposed iron core temperature, simply measure the temperature of certain point inside dry-type iron-core reactor, caused survey Accuracy of measurement difference and the high technical problem of measurement cost.

Goal of the invention, feature, advantage to enable the present invention is more obvious and understandable, below in conjunction with the present invention Attached drawing in embodiment, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that disclosed below Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this area All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention Scope.

Referring to Fig. 1, one an embodiment of the present invention provides a kind of dry-type iron-core reactor temperature distribution measuring method Embodiment, including:

101:Arranged on middle winding and the side column winding of dry-type iron-core reactor along the axial direction of iron-core reactor The temperature sensor of predetermined number;

102:The temperature field test of iron-core reactor is carried out by multichannel temperature measuring instrument;

In view of the structural symmetry of reactor, temperature survey is carried out in middle winding and side column winding, day can be used Arrangement and measurement that LR8400-21 multichannel temperatures measuring system carries out multi-temperature point are put, wherein;

It should be noted that the arrangement of temperature sensor can be:The temperature sensor of each winding edge from top to bottom Straight line is evenly arranged, then by data transmission device by measured data transfer to multichannel temperature measuring instrument, Measuring method in this way, to measure how the temperature field of whole reactor is distributed.

In the embodiment of the present invention, by carrying out multi-temperature point measurement to dry-type iron-core reactor, complete to whole dry type iron The measurement of core device thermo parameters method, make use of the symmetrical characteristic of reactor self structure, in middle winding and side column winding Temperature survey is carried out, both temperature field can fully and effectively be measured, also reduces required sensor to the full extent Quantity, solves the prior art and inspection is carried out by way of infrared scan to carry out Temperature Distribution survey to dry-type iron-core reactor Amount, can only reflect the outermost temperature of winding and exposed iron core temperature, simply measure certain point inside dry-type iron-core reactor Temperature, caused measurement accuracy difference and the high technical problem of measurement cost.

Please referring to Fig.2, Fig. 2 is the thermo parameters method figure in middle winding air passage, wherein, it is reactor temperature highest in air passage Place, up to 92.4 DEG C, hottest spot temperature is 1.43 times of mean temperature, and thermal self-restraint stress is located at apart from winding top in air passage At about 1/4.

Please referring to Fig.3, Fig. 3 is the thermo parameters method figure on the inside of middle winding, wherein, with the rise of measuring point height, temperature Degree is stepped up.

Please referring to Fig.4, Fig. 4 is the thermo parameters method figure of middle winding outer surface position, wherein, with the increasing of winding height Add, winding hull-skin temperature gradually rises, but increased amplitude is less and less.

Fig. 5 is refer to, Fig. 5 is the thermo parameters method figure in side column winding air passage, wherein, temperature highest in side column winding air passage Point is located at winding top about 1/4, consistent with the distribution law of temperature field in middle winding air passage.

Fig. 6 is refer to, Fig. 6 is winding internal layer thermo parameters method figure, wherein, temperature is equally also with temperature measuring point on the inside of winding The rise of height and increase.

Simulating, verifying is carried out to the dry-type iron-core reactor temperature distribution measuring method that above-described embodiment provides, according to common The structure of dry-type iron-core reactor, establishes the theoretical model of the internal temperature field distribution for analyzing dry-type iron-core reactor, The reactor encapsulating maximum radius r of selection is 29.1cm, and height z is 100cm, rated current 300A, in order to find in reactor Portion's distribution law of temperature field, calculates and also to simplify, reactor is averagely divided into 3 encapsulatings from the inside to the outside, each bag The thickness of envelope is 2cm.

Choose heat conduction model plane55 units to be analyzed, utilize heat transfer principle and finite element analysis law theory meter Calculate the distribution in reactor temperature field.

When 40 DEG C of environment temperature, reactor work under rated current 300A, the temperature of coil and iron core 78.5~ Between 90.7 DEG C, with the increase of height, the temperature of iron core and coil is in rising trend.According to emulation data result, VB is utilized Program, coil 8 decile, and read each section of height at 0/8,1/8,2/8,3/8,4/8,5/8,6/8,7/8,8/8 from top to bottom The temperature for spending each node is averaged, and draw the second encapsulating coil temperature size with coil height change curve as shown in fig. 7, It can be seen that with the increase of height, coil temperature increases therewith, at coil top about 1/4 temperature rise reach maximum 90.7 Degree.This is consistent by the temperature field measurement method actual measurement rule of multichannel temperature measuring system with previous embodiment, also illustrates The hotspot location of winding is located at the coil top about 1/4.

Above is the description carried out to a kind of one embodiment of dry-type iron-core reactor temperature distribution measuring method, below It is that a kind of one embodiment of dry-type iron-core reactor temperature distribution measuring apparatus is described in detail.

With reference to Fig. 8, a kind of one embodiment of dry-type iron-core reactor temperature distribution measuring apparatus provided by the invention, bag Include:

Arrange module 801, on middle winding and the side column winding of dry-type iron-core reactor along iron-core reactor Axial direction arranges the temperature sensor of predetermined number;

Test module 802, for carrying out the temperature field test of iron-core reactor by multichannel temperature measuring instrument.

Embodiment in the present embodiment illustrates which is not described herein again in the above-described embodiments.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of system and module, may be referred to the corresponding process in preceding method embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed module and method, can pass through it Its mode is realized.For example, module embodiments described above are only schematical, for example, the division of the module, only Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple module or components can be tied Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or module Letter connection, can be electrical, machinery or other forms.

The module illustrated as separating component may or may not be physically separate, be shown as module The component shown may or may not be physical module, you can with positioned at a place, or can also be distributed to multiple On mixed-media network modules mixed-media.Some or all of module therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each function module in each embodiment of the present invention can be integrated in a processing module, can also That modules are individually physically present, can also two or more modules be integrated in a module.Above-mentioned integrated mould Block can both be realized in the form of hardware, can also be realized in the form of software function module.

The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to before Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that:It still can be to preceding State the technical solution described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic;And these Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical solution.

Claims (4)

  1. A kind of 1. dry-type iron-core reactor temperature distribution measuring method, it is characterised in that including:
    On middle winding and the side column winding of dry-type iron-core reactor predetermined number is arranged along the axial direction of iron-core reactor Temperature sensor;
    The temperature field test of the iron-core reactor is carried out by multichannel temperature measuring instrument.
  2. A kind of 2. dry-type iron-core reactor temperature distribution measuring method according to claim 1, it is characterised in that it is described On middle winding and the side column winding of dry-type iron-core reactor the temperature of predetermined number is arranged along the axial direction of iron-core reactor Sensor specifically includes:
    It is evenly arranged on middle winding and the side column winding of dry-type iron-core reactor along the axial direction of iron-core reactor default The temperature sensor of number.
  3. A kind of 3. dry-type iron-core reactor temperature distribution measuring apparatus, it is characterised in that including:
    Module is arranged, for the axial direction on middle winding and the side column winding of dry-type iron-core reactor along iron-core reactor Arrange the temperature sensor of predetermined number;
    Test module, for carrying out the temperature field test of the iron-core reactor by multichannel temperature measuring instrument.
  4. A kind of 4. dry-type iron-core reactor temperature distribution measuring apparatus according to claim 3, it is characterised in that the cloth Module is put to be specifically used for:
    It is evenly arranged on middle winding and the side column winding of dry-type iron-core reactor along the axial direction of iron-core reactor default The temperature sensor of number.
CN201711166911.1A 2017-11-21 2017-11-21 A kind of dry-type iron-core reactor temperature distribution measuring method and device CN107978438A (en)

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Application Number Priority Date Filing Date Title
CN201711166911.1A CN107978438A (en) 2017-11-21 2017-11-21 A kind of dry-type iron-core reactor temperature distribution measuring method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711166911.1A CN107978438A (en) 2017-11-21 2017-11-21 A kind of dry-type iron-core reactor temperature distribution measuring method and device

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6667527B2 (en) * 2002-05-10 2003-12-23 Applied Materials, Inc Temperature sensor with shell
CN101557095A (en) * 2008-04-11 2009-10-14 庞挺 Temperature protective dry-type air core reactor and temperature measuring method thereof
CN101949744A (en) * 2010-09-06 2011-01-19 国网电力科学研究院武汉南瑞有限责任公司 Fiber grating-based transformer internal temperature detection system
CN203643050U (en) * 2013-12-03 2014-06-11 中国南方电网有限责任公司超高压输电公司广州局 Ultra-high-voltage convertor station dry reactor temperature monitoring device based on fiber temperature measurement
WO2016046031A1 (en) * 2014-09-26 2016-03-31 Siemens Aktiengesellschaft Temperature-compensated magneto-optical current transformer
CN205333221U (en) * 2015-11-25 2016-06-22 国家电网公司 A distributed optical fiber temperature measurement system for dry -type reactor
CN205909944U (en) * 2016-06-02 2017-01-25 国家电网公司 Hollow parallel reactor distributed optical fiber temperature measurement device of portable dry -type

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6667527B2 (en) * 2002-05-10 2003-12-23 Applied Materials, Inc Temperature sensor with shell
CN101557095A (en) * 2008-04-11 2009-10-14 庞挺 Temperature protective dry-type air core reactor and temperature measuring method thereof
CN101949744A (en) * 2010-09-06 2011-01-19 国网电力科学研究院武汉南瑞有限责任公司 Fiber grating-based transformer internal temperature detection system
CN203643050U (en) * 2013-12-03 2014-06-11 中国南方电网有限责任公司超高压输电公司广州局 Ultra-high-voltage convertor station dry reactor temperature monitoring device based on fiber temperature measurement
WO2016046031A1 (en) * 2014-09-26 2016-03-31 Siemens Aktiengesellschaft Temperature-compensated magneto-optical current transformer
CN205333221U (en) * 2015-11-25 2016-06-22 国家电网公司 A distributed optical fiber temperature measurement system for dry -type reactor
CN205909944U (en) * 2016-06-02 2017-01-25 国家电网公司 Hollow parallel reactor distributed optical fiber temperature measurement device of portable dry -type

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