CN105932607B - Cable laying experimental method and device based on cable support system eddy-current loss - Google Patents
Cable laying experimental method and device based on cable support system eddy-current loss Download PDFInfo
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- CN105932607B CN105932607B CN201610154338.1A CN201610154338A CN105932607B CN 105932607 B CN105932607 B CN 105932607B CN 201610154338 A CN201610154338 A CN 201610154338A CN 105932607 B CN105932607 B CN 105932607B
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- 238000002474 experimental method Methods 0.000 title claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000000630 rising effect Effects 0.000 claims description 16
- 238000009529 body temperature measurement Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The present invention relates to the cable laying experimental methods based on cable support system eddy-current loss, experimental provision of the structure with several moveable cable beareves, three cables are arranged in by the cable bearer on experimental provision, the size of database measurement eddy-current loss is established by the temperature change for measuring cable, specifically includes following experimental method；For the experimental method of cable arrangements mode factor；For the experimental method of cable bearer material factor；For the experimental method of cable and cable bearer spacing factor；And the experimental method for current-carrying capacity of cable factor；Finally the temperature results of record with reference value are compared, form optimal overhead cabling method.Compared with advantageous effect：Change different primary condition, while ensureing that other conditions are identical makes measurement result as objective and accurate as possible.
Description
Technical field
The present invention relates to cable bearer field more particularly to a kind of cable layings based on cable support system eddy-current loss
Experimental method and device.
Background technology
Under AC great current effect, the magnetic conductivity of stent can generate the magnetic field around cable very important influence,
Long-term cable operating experience shows that common steel bracket eddy-current loss cannot be ignored, and steel stent long-term fever outside cable to protecting
The service life of set also has a certain impact, and cast-in-place tunnel cabling cross-section diagram is as shown in Figure 1.Cable run support system difference material
The selection of matter has a significant impact to cable run cost.The accurate calculating of eddy-current loss is unlike material cable support system to electricity
Cable runs the basis of applied research, it is necessary to systematically support system eddy-current loss influence factor be studied.
Invention content
Present invention aims to overcome that the deficiency of the Yi Shang prior art, proposes a kind of based on cable support system eddy-current loss
Cable laying experimental method, specifically realized by following technical scheme：
The cable laying experimental method based on cable support system eddy-current loss, including：
Experimental provision of the band there are one channel is built, moveable cable bearer is equipped in the channel, by three cables
It is arranged in the channel by the stationary fixture on the cable bearer, the letter being fitted to by cable temperature and eddy-current loss
Number calculates the size of eddy-current loss, specifically includes following experimental method；
For the experimental method of cable arrangements mode factor：Removal cable is to replace the arrangement mode of cable, and to cable
It is powered and carries out eddy-current loss experiment, record the temperature of cable under different cable arrangements modes；
For the experimental method of cable bearer material factor：The material of cable bearer is replaced, and is powered to cable and carries out whirlpool
Loss test is flowed, records the temperature of cable under different cable bearer materials；
For the experimental method of cable and cable bearer spacing factor：By changing cable stationary fixture on cable bearer
Size carries out eddy-current loss experiment to adjust the distance between cable and cable bearer to cable energization, records different cables rows
The temperature of cable under row mode；
For the experimental method of current-carrying capacity of cable factor：Load the three-phase alternating current of different current-carrying capacities respectively to every cable
Electricity records the temperature of cable under different current-carrying capacities；
By the function that the temperature data of record brings cable temperature into and eddy-current loss is fitted to, such as formula (1), different items are obtained
The size of eddy-current loss under part, forms optimal overhead cabling method,
In formula, P is eddy-current loss, and k is correction factor, takes the arbitrary value of 1-1.3, and γ is cable conduction rate, and f is power supply frequency
Rate, Im are maximum current, and T is measures temperature.
The further design of the cable laying experimental method based on cable support system eddy-current loss is that experiment fills
It puts and further includes：
Rising current transformer, for adjusting the electrical current of cable；
Pressure regulator, for adjusting the voltage of cable；
Switchgear is connected to form controlling brancher by pressure regulator and control rising current transformer, is filled for controlling, protecting to examine
It puts；
Thermocouple temperature measurement module in channel and cable connection, measures the temperature of cable；
Current transformer obtains the electric current of cable；
Control system adjusts the voltage of pressure regulator to control the electric current of cable loop, and records thermocouple temperature measurement mould in real time
The electric current that the cable temperature and current transformer that block obtains obtain；
Compensating electric capacity, the compensating electric capacity are connected between pressure regulator and switchgear, for compensating the controlling brancher.
The further design of the cable laying experimental method based on cable support system eddy-current loss is, for electricity
In the experimental method of cable current-carrying capacity factor by rising current transformer setting electric current be respectively 800A, 1400A, 2000A, 2600A into
Row experiment, current-carrying capacity of cable size is obtained by cable specific size.
The further design of the cable laying experimental method based on cable support system eddy-current loss is, for electricity
In the experimental method of cable and cable bearer spacing factor, the adjusting range of the distance between cable and cable bearer for 20mm extremely
144mm。
The further design of the cable laying experimental method based on cable support system eddy-current loss is, feature
It is in the experimental method for cable arrangements mode factor, the arrangement mode of cable includes：It is horizontally arranged, be vertically arranged and
Product type arranges.
The further design of the cable laying experimental method based on cable support system eddy-current loss is, for electricity
Cable bearer material is using materials such as aluminium, steel, stainless steels in the experimental method of cable timbering material factor, and consults related data
Solve the conductivity and magnetic conductivity of different materials.
The further design of the cable laying experimental method based on cable support system eddy-current loss is, cable
Length is 1m to 1.5m.
It is provided according to the cable laying experimental method based on cable support system eddy-current loss a kind of based on cable branch
The cable laying experimental provision of support system eddy-current loss, including：
The channel of mobile stent is internally provided with, the mobile stent is equipped with the stationary fixture for fixing cable, cable
The fixture is connected to flatly to be laid in the channel；
Rising current transformer, for adjusting the electrical current of cable；
Pressure regulator, for adjusting the voltage of cable；
Switchgear is connected to form controlling brancher by pressure regulator and control rising current transformer, is filled for controlling, protecting to examine
It puts；
Thermocouple temperature measurement module in channel and cable connection, measures the temperature of cable；
Current transformer obtains the electric current of cable；
Control system adjusts the voltage of pressure regulator to control the electric current of cable loop, and records thermocouple temperature measurement mould in real time
The electric current that the cable temperature and current transformer that block obtains obtain；
Compensating electric capacity, the compensating electric capacity are connected between pressure regulator and switchgear, for compensating the controlling brancher.This hair
The advantages of bright, is as follows：
1st, in the research of eddy-current loss, mostly based on emulation, seldom it is tested using the method for test platform
Card.And the loss of cable bearer vortex is not easy directly to measure, therefore reflects eddy-current loss by measuring the variation of temperature
Size.
2nd, workload is reduced to the Rational Simplification of test platform, it is contemplated that it has been vortexed compared with distant location electric current from stent
Distribution influences less, therefore single near support cable length takes 1 meter (to calculate only poor 0.9%) of eddy-current loss with 2 meters.
3rd, consider that different factors influence cable support system eddy-current loss, change different primary condition, ensure simultaneously
Other conditions are identical to make measurement result as objective and accurate as possible.
Description of the drawings
The cast-in-place tunnel cabling cross-section diagrams of Fig. 1.
Fig. 2 cable bearer eddy-current loss experimental provision schematic diagrams.
The schematic diagram of Fig. 3 cable difference arrangement modes.
Position relationship schematic diagram between Fig. 4 cables and stent.
Specific embodiment
The present invention is described in detail below in conjunction with attached drawing, it is noted that described embodiment is only intended to just
In the understanding of the present invention, and any restriction effect is not played to it.
The cable laying experimental method based on cable support system eddy-current loss of the present embodiment, there are one structure bands
The experimental provision of channel is equipped with moveable cable bearer in channel, three cables is passed through the fixation on the cable bearer
Fixture arranges the size for calculating eddy-current loss by the function that cable temperature and eddy-current loss are fitted in the channel.It considers
Its Eddy Distribution is influenced less, therefore the single mobile near support cable of the present embodiment is long compared with distant location electric current from stent
Degree takes 1 meter (to calculate only poor 0.9%) of eddy-current loss with 2 meters.The present embodiment establishes database by the experiment of a large amount of eddy-current losses, intends
Close the functional relation between eddy-current loss and temperature, relational expression such as formula (1).
In formula, P is eddy-current loss, unit w；K is correction factor, takes 1-1.3；γ is cable conduction rate；F is power supply frequency
Rate, unit Hz；Im is maximum current, unit A；T is measures temperature, unit DEG C.The present embodiment is become by measuring the temperature of cable
Change the size for weighing eddy-current loss, specifically include following experimental method.
For the experimental method of cable arrangements mode factor：Removal cable specifically has number to replace the arrangement mode of cable
Value arrangement, horizontally arranged and product word arrangement mode, as shown in Figure 3.And be powered to cable and carry out eddy-current loss experiment, record is not
With the temperature change of cable under cable arrangements mode；
For the experimental method of cable bearer material factor：The material of cable bearer is replaced, and is powered to cable and carries out whirlpool
Loss test is flowed, records the temperature change of cable under different cable bearer materials；
For the experimental method of cable and cable bearer spacing factor：By changing cable stationary fixture on cable bearer
Size adjusts the distance between cable and cable bearer, as shown in Figure 4.And be powered to cable and carry out eddy-current loss experiment, record
The temperature change of cable under different cable arrangements modes；
For the experimental method of current-carrying capacity of cable factor：Load the three-phase alternating current of different current-carrying capacities respectively to every cable
Corresponding current density records the temperature change of cable under different current-carrying capacities.
The temperature results of record are brought into the relational expression of database fitting, the size of eddy-current loss under different condition is obtained,
Form optimal overhead cabling method.
As shown in Fig. 2, the experimental provision of the present embodiment further includes：Rising current transformer, pressure regulator, switchgear, thermocouple are surveyed
Warm module, current transformer, control system and compensating electric capacity.Wherein, rising current transformer, for adjusting the energization of cable electricity
Stream；Pressure regulator, for adjusting the voltage of cable；Switchgear is connected to form control branch by pressure regulator and control rising current transformer
Road, for controlling, protecting verifying attachment；Thermocouple temperature measurement module in channel and cable connection, measures the temperature of cable；
Current transformer obtains the electric current of cable；Control system adjusts the voltage of pressure regulator to control the electric current of cable loop, and real
The electric current that the cable temperature and current transformer that Shi Jilu thermocouple temperature measurements module obtains obtain；Compensating electric capacity, the compensation electricity
Appearance is connected between pressure regulator and switchgear, for compensating the controlling brancher.
Further, for loading 800A, 1400A, 2000A, 2600A respectively in the experimental method of current-carrying capacity of cable factor
Electric current tested.
For in the experimental method of cable and cable bearer spacing factor, the adjustment model of the distance between cable and cable bearer
It encloses for 20mm to 144mm.
For cable bearer material in the experimental method of cable bearer material factor using materials such as aluminium, steel, stainless steels, and
Consult conductivity and magnetic conductivity that related data understands different materials.
A kind of cable laying experimental provision based on cable support system eddy-current loss, the device are provided according to the above method
By be internally provided with the channel of mobile stent, rising current transformer, pressure regulator, switchgear, thermocouple temperature measurement module, current transformer,
Control system and compensating electric capacity.Wherein, the mobile stent for being internally provided with the channel of mobile stent is equipped with to fix cable
Stationary fixture, cable is connected to the fixture and is flatly laid in the channel.Rising current transformer, for adjusting cable
Electrical current.Pressure regulator, for adjusting the voltage of cable.Switchgear is connected to form by pressure regulator and control rising current transformer
Controlling brancher, for controlling, protecting verifying attachment.Thermocouple temperature measurement module in channel and cable connection, measures cable
Temperature；
Current transformer obtains the electric current of cable.Control system adjusts the voltage of pressure regulator to control the electricity of cable loop
Stream, and the electric current that the cable temperature and current transformer that record thermocouple temperature measurement module obtains in real time obtain；Compensating electric capacity, it is described
Compensating electric capacity is connected between pressure regulator and switchgear, for compensating the controlling brancher.
Claims (8)
1. the cable laying experimental method based on cable support system eddy-current loss, it is characterised in that：There are one channels for structure band
Experimental provision, moveable cable bearer is equipped in the channel, three cables are passed through into the fixation on the cable bearer
Fixture is arranged in the channel, and the size of eddy-current loss, tool are calculated by the function that cable temperature and eddy-current loss are fitted to
Body includes following experimental method；
For the experimental method of cable arrangements mode factor：Removal cable is powered to cable with replacing the arrangement mode of cable
Eddy-current loss experiment is carried out, records the temperature of cable under different cable arrangements modes；
For the experimental method of cable bearer material factor：The material of cable bearer is replaced, and vortex damage is carried out to cable energization
Consumption experiment records the temperature of cable under different cable bearer materials；
For the experimental method of cable and cable bearer spacing factor：By the size for changing cable stationary fixture on cable bearer
To adjust the distance between cable and cable bearer, and eddy-current loss experiment is carried out to cable energization, record cable under different spacing
Temperature；
For the experimental method of current-carrying capacity of cable factor：It loads the three-phase alternating current of different current-carrying capacities respectively to every cable, remembers
Record the temperature of cable under different current-carrying capacities；
By the function that the temperature data of record brings cable temperature into and eddy-current loss is fitted to, such as formula (1), it is obtained under different condition
The size of eddy-current loss forms optimal overhead cabling method,
In formula, P is eddy-current loss, unit w；K is correction factor, takes 1-1.3；γ is cable conduction rate；F is supply frequency, single
Position Hz；ImFor maximum current, unit A；T is measures temperature, unit DEG C.
2. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
In experimental provision further includes：
Rising current transformer, for adjusting the electrical current of cable；
Pressure regulator, for adjusting the voltage of cable；
Switchgear is connected to form controlling brancher, for controlling, protecting verifying attachment by pressure regulator and control rising current transformer；
Thermocouple temperature measurement module in channel and cable connection, measures the temperature of cable；
Current transformer obtains the electric current of cable；
Control system adjusts the voltage of pressure regulator to control the electric current of cable loop, and record thermocouple temperature measurement module obtains in real time
The electric current that the cable temperature and current transformer taken obtains；
Compensating electric capacity, the compensating electric capacity are connected between pressure regulator and switchgear, for compensating the controlling brancher.
3. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
In the experimental method for current-carrying capacity of cable factor by rising current transformer setting electric current be respectively 800A, 1400A, 2000A,
2600A is tested, and current-carrying capacity of cable size is obtained by cable specific size.
4. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
In the experimental method for cable and cable bearer spacing factor, the adjusting range of the distance between cable and cable bearer is
20mm to 144mm.
5. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
In the experimental method for cable arrangements mode factor, the arrangement mode of cable includes：It is horizontally arranged, be vertically arranged and product
Type arranges.
6. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
Cable bearer material uses aluminium or steel or stainless steel material in the experimental method for cable bearer material factor.
7. the cable laying experimental method according to claim 1 based on cable support system eddy-current loss, feature exist
In cable length be 1m to 1.5m.
8. as cable laying experimental method of the claim 1-7 any one of them based on cable support system eddy-current loss provides
A kind of cable laying experimental provision based on cable support system eddy-current loss, it is characterised in that including：
The channel of mobile stent is internally provided with, the mobile stent is equipped with the stationary fixture for fixing cable, and cable, which is worn, to be connect
It is flatly laid in the channel in the fixture；
Rising current transformer, for adjusting the electrical current of cable；
Pressure regulator, for adjusting the voltage of cable；
Switchgear is connected to form controlling brancher, for controlling, protecting verifying attachment by pressure regulator and control rising current transformer；
Thermocouple temperature measurement module in channel and cable connection, measures the temperature of cable；
Current transformer obtains the electric current of cable；
Control system adjusts the voltage of pressure regulator to control the electric current of cable loop, and record thermocouple temperature measurement module obtains in real time
The electric current that the cable temperature and current transformer taken obtains；
Compensating electric capacity, the compensating electric capacity are connected between pressure regulator and switchgear, for compensating the controlling brancher.
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| CN201610154338.1A CN105932607B (en) | 2016-07-22 | 2016-07-22 | Cable laying experimental method and device based on cable support system eddy-current loss |
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| CN114976992A (en) * | 2022-06-22 | 2022-08-30 | 广东电网有限责任公司 | Cable support adjusting method and device, electronic equipment and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ538181A (en) * | 2003-04-04 | 2007-08-31 | Lg Cable Ltd | Apparatus and method for evaluating underground electric power cables |
| CN101672880A (en) * | 2009-09-21 | 2010-03-17 | 广东电网公司广州供电局 | Identification method of cable current-carrying capacity and identification device |
| CN102928101A (en) * | 2012-10-31 | 2013-02-13 | 广州供电局有限公司 | Evaluation method of 10kV three-core cable conductor temperature |
| CN103970947A (en) * | 2014-05-05 | 2014-08-06 | 同济大学 | Real-time temperature rise measurement method of electromagnetic system of low-voltage apparatus based on finite element analysis |
| CN104899379A (en) * | 2015-06-10 | 2015-09-09 | 国网河南省电力公司电力科学研究院 | ANSYS-based crosslinking polyethylene insulated cable temperature field finite element calculation method |
| CN105184003A (en) * | 2015-09-18 | 2015-12-23 | 北京电力经济技术研究院 | Calculating method for power-cable magnetic-thermal coupling field |
| CN204945265U (en) * | 2015-08-17 | 2016-01-06 | 扬州市鑫源电气有限公司 | A kind of cable current circulating-heating tests energy-saving pilot system |
-
2016
- 2016-07-22 CN CN201610154338.1A patent/CN105932607B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ538181A (en) * | 2003-04-04 | 2007-08-31 | Lg Cable Ltd | Apparatus and method for evaluating underground electric power cables |
| CN101672880A (en) * | 2009-09-21 | 2010-03-17 | 广东电网公司广州供电局 | Identification method of cable current-carrying capacity and identification device |
| CN102928101A (en) * | 2012-10-31 | 2013-02-13 | 广州供电局有限公司 | Evaluation method of 10kV three-core cable conductor temperature |
| CN103970947A (en) * | 2014-05-05 | 2014-08-06 | 同济大学 | Real-time temperature rise measurement method of electromagnetic system of low-voltage apparatus based on finite element analysis |
| CN104899379A (en) * | 2015-06-10 | 2015-09-09 | 国网河南省电力公司电力科学研究院 | ANSYS-based crosslinking polyethylene insulated cable temperature field finite element calculation method |
| CN204945265U (en) * | 2015-08-17 | 2016-01-06 | 扬州市鑫源电气有限公司 | A kind of cable current circulating-heating tests energy-saving pilot system |
| CN105184003A (en) * | 2015-09-18 | 2015-12-23 | 北京电力经济技术研究院 | Calculating method for power-cable magnetic-thermal coupling field |
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Address after: No. 215 Shanghai Road, Nanjing, Jiangsu Applicant after: NANJING ELECTRIC POWER ENGINEERING DESIGN CO., LTD. Applicant after: National Institute of economic and technology research, Jiangsu Electric Power Co., Ltd. Applicant after: China Three Gorges University Applicant after: State Grid Corporation of China Address before: No. 215 Shanghai Road, Nanjing, Jiangsu Applicant before: NANJING ELECTRIC POWER ENGINEERING DESIGN CO., LTD. Applicant before: ECONOMIC AND TECHNOLOGY RESEARCH INSTITUTE, STATE GRID JIANGSU ELECTRIC POWER COMPANY Applicant before: China Three Gorges University Applicant before: State Grid Corporation of China |
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Inventor after: Cui Houkun Inventor after: Zhou Zebin Inventor after: Zou Sheng Inventor after: Zhang Yujiao Inventor after: Kong Tao Inventor after: Liu Jiawei Inventor after: Wang Tinghua Inventor after: An Zengjun Inventor after: Zhou Hongwei Inventor after: Li Boyi Inventor after: Zhang Xiaofeng Inventor after: Han Wen Inventor after: Ye Jingtao Inventor after: Su Yongliang Inventor before: Cui Houkun Inventor before: Zhang Yujiao Inventor before: Kong Tao Inventor before: Liu Jiawei Inventor before: Wang Tinghua Inventor before: An Zengjun Inventor before: Li Boyi Inventor before: Zhang Xiaofeng Inventor before: Han Wen Inventor before: Ye Jingtao Inventor before: Su Yongliang Inventor before: Zhou Zebin |
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