CN110261692A - Bus main line thermal cycle test device and its test method - Google Patents
Bus main line thermal cycle test device and its test method Download PDFInfo
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- CN110261692A CN110261692A CN201910287209.3A CN201910287209A CN110261692A CN 110261692 A CN110261692 A CN 110261692A CN 201910287209 A CN201910287209 A CN 201910287209A CN 110261692 A CN110261692 A CN 110261692A
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- 238000012360 testing method Methods 0.000 title claims abstract description 93
- 238000010998 test method Methods 0.000 title claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 30
- 239000010949 copper Substances 0.000 claims abstract description 30
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000010079 rubber tapping Methods 0.000 claims description 25
- 238000005382 thermal cycling Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 230000004087 circulation Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 238000012937 correction Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000000819 phase cycle Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000010365 information processing Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- 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
Abstract
A kind of bus main line thermal cycle test device, including bus duct thermal cycle electric power host, bus duct thermal cycle power supply subsidiary engine, bus main line, thermocouple, connection copper bus-bar, be flexible coupling and test copper conductor, progress bus main line thermal cycle test.The invention has the advantages that: solve the problems, such as that equipment volume existing for conventional busbars mains system temperature rise test is big, time-consuming, energy consumption is higher, efficiency is lower and operating flexibility is poor for test, pass through the bus main line thermal cycle test device and its test method, the automatic test for realizing the thermal cycle of bus mains system, using effect is good, is conducive to promote.
Description
Technical field
The present invention relates to automatic test field more particularly to a kind of bus main line thermal cycle test device and its test sides
Method.
Background technique
As the development of detection technique and low-voltage complete switch equipment and control equipment new standard are released, bus mains system
(bus duct) CCC authenticates establishing criteria GB 7251.6-2015 " low-voltage complete switch equipment and control the 6th part of equipment: bus
Mains system (bus duct) ".New standard requirement, bus main line band tapping unit should carry out thermal cycling test, and test sample need to be into
84 thermal cycling tests of row, one cycle include being powered 3 hours, are closed 3 hours, and whole experiment process is accumulative (to close up to 504 hours
Meter 21 days), it does not also include the bus main line temperature rise constant time, each existing conventional busbars mains system thermal cycling test of process,
Load is generally used as plus variable resistance or current regulator as power supply using large capacity multiple magnetic circuit transformer, is manually adjusted
Variable resistance or current regulator keep load current to stablize, and repeatedly measurement temperature value carries out temperature rise test.Due to big
Capacity multiple magnetic circuit transformer equipment volume itself is big, after mixing variohm or current regulator load, causes occupied area very
Greatly, lab space is required high；And equipment is heavy and immovable, can not carry out more set equipment while detect.Simultaneously as
Lead resistance variation, the variation of load resistance heating itself, test electric current change therewith in the fluctuation of network voltage, current loop,
Operator often regulating resistor or current transformer must carry out constant current, also need to record temperature repeatedly, and test is passed dull uninteresting,
Time-consuming and laborious, precision still not can guarantee, and a large amount of inductive reactive power loss can be generated under high current, and electric energy directly consumes
On resistor or current transformer, power grid quality is not only influenced, and also causes the huge waste of the energy.As it can be seen that conventional busbars are dry
Linear system temperature rise test of uniting has that equipment volume is big, that time-consuming, energy consumption is higher, efficiency is lower and operating flexibility is poor etc. is fatal for test
Disadvantage.Therefore, it is necessary to design a kind of full automatic novel warming online test system to mitigate the labor intensity of testing crew,
Improve the precision of test result and the automatization level of test process.
Summary of the invention
The invention solves the above-mentioned problems of the prior art, provide a kind of bus main line thermal cycle test device and its
Test method, solve equipment volume existing for conventional busbars mains system temperature rise test is big, time-consuming for test, energy consumption compared with
The problem high, efficiency is lower and operating flexibility is poor.
The technical scheme adopted by the invention to solve the technical problem: this bus main line thermal cycle test device, including mother
Wire casing thermal cycle electric power host, bus main line, thermocouple, connection copper bus-bar, is flexible coupling and surveys at bus duct thermal cycle power supply subsidiary engine
Copper conductor is tried, bus duct thermal cycle electric power host is connect with bus main line, and bus duct thermal cycle power supply subsidiary engine and bus main line connect
It connects.
There is bus main line tapping unit, bus main line input terminal, bus duct thermal cycle electric power host is logical on bus main line
Cross connection copper bus-bar, being flexible coupling connect with bus main line input terminal, bus duct thermal cycle power supply subsidiary engine by test copper conductor with
The connection of bus main line tapping unit, bus duct thermal cycle electric power host connect thermocouple, and thermocouple connects bus main line, and bus is dry
There is bus trunk end on line.
Bus duct thermal cycle electric power host is connect with bus duct thermal cycle power supply subsidiary engine by R485 communication interface, Huo Zhetong
Cross WIFI wireless telecommunications connection.
The test method of above-mentioned bus main line thermal cycle test device, includes the following steps:
Step 1: bus duct thermal cycle electric power host output end passes through copper bus-bar, is flexible coupling and bus main line input terminal three
It is connected, bus duct thermal cycle power supply subsidiary engine output end passes through standard testing copper conductor and bus main line tapping unit output end three
It is connected；Bus main line output end is directly shorted with copper bus-bar；
Step 2: bus duct thermal cycle electric power host is distributed on bus main line by aviation socket multipoint thermocouple, into
Row multipoint acquisition point；
Step 3: bus duct thermal cycle electric power host and bus duct thermal cycle power supply subsidiary engine power on respectively, operation power master
Machine man-machine interface sets bus main line total current, tapping unit electric current, cycle-index, circulation time, and startup power supply, makes bus
Main line and tapping unit respectively reach test rated current；
Step 4: when the temperature rise of bus main line reaches a steady state value, the temperature rise variation of bus rail temperature measurement point does not surpass
Constant temperature requirement is complied with standard when crossing 1k/h, bus main line thermal cycle test system automatically engages thermal cycling test, realizes bus duct
Thermal cycle electric power host and bus duct thermal cycle power supply subsidiary engine control start and stop simultaneously, and procedural test temperature is automatically recorded, 84 times
Stop test after circulation, completes thermal cycling test, and record experimentation bus rail temperature.
The invention has the advantages that: bus main line thermal cycle test device of the invention and its test method solve
Equipment volume existing for conventional busbars mains system temperature rise test is big, time-consuming, energy consumption is higher, efficiency is lower and operation spirit for test
It is the problem of poor activity, automatic to realize bus mains system heat by the bus main line thermal cycle test device and its test method
The test of circulation, using effect is good, is conducive to promote.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the control flow chart of the embodiment of the present invention；
Fig. 3 is the same phase of output of bus duct of embodiment of the present invention thermal cycle electric power host and bus duct thermal cycle power supply subsidiary engine
Voltage oscillogram；
Fig. 4 is the output reverse phase of bus duct of embodiment of the present invention thermal cycle electric power host and bus duct thermal cycle power supply subsidiary engine
Voltage oscillogram；
Fig. 5 is bus duct of embodiment of the present invention thermal cycle electric power host principle system figure；
Fig. 6 is bus duct of embodiment of the present invention thermal cycle power supply subsidiary engine principle system figure.
Description of symbols: bus duct thermal cycle electric power host 1, bus duct thermal cycle power supply subsidiary engine 2, bus main line 3, heat
Galvanic couple 4 connects copper bus-bar 5, is flexible coupling 6, tests copper conductor 7, bus main line tapping unit 31, and bus main line input terminal 32 is female
Line trunk end 33.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Referring to attached drawing: this bus main line thermal cycle test device in the present embodiment, including bus duct thermal cycle power supply
Host 1, bus duct thermal cycle power supply subsidiary engine 2, bus main line 3, thermocouple 4, connection copper bus-bar 5, be flexible coupling 6 and test copper conductor
7, bus duct thermal cycle electric power host 1 is connect with bus main line 3, and bus duct thermal cycle power supply subsidiary engine 2 is connect with bus main line 3.
There is bus main line tapping unit 31, bus main line input terminal 32, bus duct thermal cycle power supply master on bus main line 3
Machine 1 by connection copper bus-bar 5, be flexible coupling 6 connect with bus main line input terminal 32, bus duct thermal cycle power supply subsidiary engine 2 passes through survey
Examination copper conductor 7 is connect with bus main line tapping unit 31, and bus duct thermal cycle electric power host 1 connects thermocouple 4, and thermocouple 4 connects
Bus main line 3 is connect, there is bus trunk end 33 on bus main line 3.
Bus duct thermal cycle electric power host 1 is connect with bus duct thermal cycle power supply subsidiary engine 2 by R485 communication interface, or
It is connected by WIFI wireless telecommunications.
The test method of above-mentioned bus main line thermal cycle test device, includes the following steps:
Step 1: 1 output end of bus duct thermal cycle electric power host is by copper bus-bar 5, be flexible coupling 6 and bus main line input terminal
32 3 are connected, and 2 output end of bus duct thermal cycle power supply subsidiary engine passes through standard testing copper conductor 7 and bus main line tapping unit 31
Output end three is connected；Bus main line output end 33 is directly shorted with copper bus-bar；
Step 2: bus duct thermal cycle electric power host 1 is distributed on bus main line 3 by aviation socket multipoint thermocouple 4,
Carry out multipoint acquisition point；
Step 3: bus duct thermal cycle electric power host 1 and bus duct thermal cycle power supply subsidiary engine 2 power on respectively, operation power
Host man-machine interface sets 3 total current of bus main line, tapping unit electric current, cycle-index, circulation time, and startup power supply, makes
Bus main line and tapping unit respectively reach test rated current；
Step 4: when 3 temperature rise of bus main line reaches a steady state value, the temperature rise variation of bus rail temperature measurement point does not surpass
Constant temperature requirement is complied with standard when crossing 1k/h, bus main line thermal cycle test system automatically engages thermal cycling test, realizes bus duct
Thermal cycle electric power host 1 and the control of bus duct thermal cycle power supply subsidiary engine 2 start and stop simultaneously, and procedural test temperature is automatically recorded, 84
Stop test after secondary circulation, completes thermal cycling test, and record experimentation bus rail temperature.
Bus duct thermal cycle electric power host 1, bus duct thermal cycle power supply subsidiary engine 2 are realized using digital fuzzy control technology
High precision constant current is adjusted, and with a main auxiliary line lock control mode, realizes two mothers as long as operating when test in electric power host
Wire casing thermal cycle power supply starts or stops simultaneously and parameter setting, and realizes from thermal cycling test function is opened, in extraneous power grid electricity
Source generation fluctuation or power load impedance operator remain to protect bus main line and tapping unit output electric current automatically when changing
It holds constant；The temperature detecting unit 11 is insulated using each interchannel of Intelligence sensor, and multichannel temperature uses aviation socket
Thermocouple is connected directly to measure, can signal directly to 380V and following energized conductor carry out multi_line circuit observing and controlling.And it mentions
It can be automatically saved in USB flash disk for USB interface data, data can be transformed into EXCEL document and be stored in computer, using very
It is convenient.
Using a main auxiliary line lock control mode, two equipment are connected or WIFI by R485 communication interface when test
Wireless telecommunications can operate in electric power host and realize that two constant-current sources start or stop and setup parameter simultaneously, and realize automatic heating
Cyclic test function.
Host can set temperature rise split time, stream time, times of thermal cycle, main bus-bar and tapping unit electric current；It is aobvious
Show working time, environment temperature, bus rail temperature, cycle-index, bus main line total current, bus main line total current and tap
Cell current.
It is realized and 2 anti-phase of bus duct thermal cycle power supply subsidiary engine or in-phase stacking in bus duct thermal cycle electric power host 1
Function, i.e. two constant current source output currents realize that algebra subtracts each other.
Field bus technique or WIFI wireless telecommunications is supported to realize the automatic identification of electric power host and power supply subsidiary engine, power supply master
Machine, which can be combined arbitrarily with other bus duct thermal cycle power supply subsidiary engines, carries out bus duct thermal cycling test.
Bus duct thermal cycle electric power host 1, which is realized, uses coarse adjustment and compensation pressure regulation with bus duct thermal cycle power supply subsidiary engine 2
Mode is combined, realizes high precision electro flow control.
Using Full-automatic correction system, multistage broken line correction method, automatically generated in the every phase adjustable extent of equipment five sections with
Upper correction coefficient provides self-calibration function, while temperature rise test Shi Keshe overgauge mode and positive and negative deviation mode, to be applicable in not
Same test requirements document.
According to Fig. 1 present invention with jack box bus duct equipment temperature rise test system connection schematic diagram.The bus duct heat
Power-cycled host output end passes through copper bus-bar or is flexible coupling to be connected with bus main line input terminal three, and the bus duct heat is followed
Ring power supply subsidiary engine output end is connected by standard testing copper conductor with 31 output end three of tapping unit of bus main line；Monitoring is total
Electric current is A1；Bus duct thermal cycle power supply subsidiary engine equally passes through copper conductor and is connected with 31 output end three of tapping unit, monitoring electricity
Stream is A2.Bus main line output end three-phase is directly shorted with copper bus-bar, and output monitoring current is A3；
Bus duct thermal cycle electric power host is distributed on bus main line by aviation socket multipoint thermocouple 4, carries out multiple spot
Collection point, as Fig. 1 is distributed；
Bus duct thermal cycle electric power host 1 and bus duct thermal cycle power supply subsidiary engine 2 power on respectively, and operation power host is man-machine
Interface setting bus main line total current, tapping unit electric current, cycle-index, circulation time, and startup power supply, make bus main line and
Tapping unit respectively reaches test rated current.The electric power host 1 and subsidiary engine 2 utilize field bus technique or WIFI channel radio
The automatic identification of existing electric power host and power supply subsidiary engine is proved to be true after interrogation, realizes that microcomputer control unit interconnects.Bus main line heat of the present invention
Loop test control flow chart is as shown in Figure 2；
When electric power host 1 exports electric current as A1 described in Fig. 1, the control output electric current of subsidiary engine 2 is A2, realizes bus duct end
Test electric current is A3=A1-A2；For the electric power host 1 with power supply subsidiary engine 2 using with phase power input, output uses transformation
Device isolation, makes two machines export same frequency, same to initial phase, and the electric power host exports different voltage magnitudes from power supply subsidiary engine and deposits
In voltage difference, using bus main line and connecting wire itself impedance, realize that controlling two constant current source currents realizes the function of subtracting each other.
When host constant-current source output voltage amplitude is higher and higher, bus main line input terminal current value A1 is bigger, end bus rail current
A3 and tapping unit flow valuve A2 constantly increase, at this time when 31 current value A3 of tapping unit reaches setting electric current power supply subsidiary engine according to
Microcomputer control unit judgement processing starts to adjust output voltage, and the electric power host 1 and power supply subsidiary engine 2 is made to export pressure difference control
In a certain range, as shown in figure 3, function is subtracted each other in the host 1 and the realization of 2 constant current source current of subsidiary engine；
When distance is longer between subsidiary engine 2 and bus main line, such as when bus main line does vertical test, bus main line and subsidiary engine
It is larger to connect 7 impedance of copper conductor, 31 current value A3 of tapping unit is unable to reach specified test electric current, the subsidiary engine microcomputer control
Unit intelligent decision simultaneously automatically switches subsidiary engine commutation transformer, and the electric power host 1 and subsidiary engine 2 export same frequency, but first phase
180 DEG C of potential difference, the electric power host realizes that the voltage difference that inversely adds becomes larger with power supply subsidiary engine, as shown in figure 4, dry using bus
Line and connecting wire impedance control two constant current source currents and realize the function of subtracting each other.Subsidiary engine constant-current source is completely instead of traditional
Adjustable rheostat realizes that electric current accurately controls；
When bus main line temperature rise reaches a steady state value, even if the temperature change of measured point reaches perseverance when being no more than 1k/h
Temperature, bus main line thermal cycle test system automatically engage thermal cycling test, realize main and auxiliaries control start and stop simultaneously, follow for 84 times
Stop test after ring, complete thermal cycling test, and record experimentation bus rail temperature, temperature rise is tested power supply and realized to bus
The fully automated management of slot temperature rise test process monitoring.
Bus duct thermal cycle electric power host 1 includes: Alternating Current Unit 101, Regulation Control unit 102, compensation control list
First 103, compensator transformer 104, large capacity current transformer 105, motor control gear unit 106, current sampling unit 107, multichannel
The composition such as temperature detecting unit 108, man-machine interface 109, microcomputer control unit 110, communication unit 111.
Alternating Current Unit 101 connects with Regulation Control unit 102, compensation control unit 103, provides three-phase four-wire system friendship
Galvanic electricity source, and there are the defencive functions such as over-voltage, decompression, phase sequence, overcurrent.Regulation Control unit 102 and 105 phase of large capacity current transformer
Connection, compensation control unit 103 are connected with compensator transformer 104, compensator transformer 104 while 105 phase of large capacity current transformer
Connection.Microcomputer control unit 110 respectively with motor control gear unit 106, current sampling unit 107, multi-channel temperature measurement list
Member 108, man-machine interface (touch liquid crystal display) 109, communication unit 111 are connected.The Alternating Current Unit 101, it is special
Sign specifically includes that A.C. contactor, intermediate control relay, digital phase sequence relay, C grades of lightning protection devices, the pressure regulation control
Unit 102 processed, which is mainly characterized in that using customization column type voltage regulator, and two pairs of limit switches are set, a pair leads to microcomputer control
Unit processed, 110, another pair scurries into electric control loop, while realizing and electrically and mechanically interlocking.The compensation control unit 103
With 104 groups of voltage compensation loops of compensator transformer, high-accuracy voltage compensation is carried out to voltage-adjustable control loop, realizes high-precision perseverance
Flow function；Microcomputer control unit 110 uses STC12C5412AD single-chip microcontroller, is used for bus duct thermal cycle electric power host signal acquisition
The output of processing and current constant control order.As the data processing centre of bus duct thermal cycle power supply, in a manner of fieldbus pair
AC system carries out information collection, intelligent management is completed in processing, on the one hand the result of information processing will be touched as man-machine interface
The information source of formula liquid crystal display is touched, it is remote in real time to be on the other hand transmitted to the realization of host computer monitoring system by communication interface
Range monitoring management.The result control of micro computer monitoring unit information processing, and USB interface data are provided can be automatically saved in USB flash disk,
Data can be transformed into EXCEL document to be stored in computer.Microcomputer control unit 110 specially develops Full-automatic correction system
(multistage broken line correction method) automatically generates five sections or more correction coefficient in the every phase adjustable extent of power supply, provides self-calibration function,
The test Shi Keshe overgauge mode of temperature rise simultaneously and positive and negative deviation mode, to be applicable in different tests requirement.AC sampling unit is real
When monitoring AC power source electric current output situation and by information by data/address bus feeding micro computer monitoring unit.It is of the present invention logical
The automatic identification that unit 111 realizes electric power host and power supply subsidiary engine using field bus technique or WIFI wireless telecommunications is interrogated, is realized
Microcomputer control unit interconnects.Regulation Control unit 102, compensation control unit 103 and compensator transformer of the present invention
104 combine, it is ensured that electric power host exports electric current precision of steady current≤0.5%, and control transformer makes AC power source output electric current certainly
It is dynamic to keep constant.The temperature detecting unit is insulated using each interchannel of Intelligence sensor, and channel passes through multichannel aviation socket
No. 32 thermocouples are directly led out to be convenient for measuring, can signal directly to 380V and following energized conductor carry out multi_line circuit observing and controlling.
2 its working principle of bus duct thermal cycle power supply subsidiary engine is as shown in fig. 6, the bus duct thermal cycle power supply subsidiary engine packet
It includes: Alternating Current Unit 201, Regulation Control unit 202, compensation control unit 203, compensator transformer 204, commutation current transformer
205, commutation control unit 206, drive control unit 208, current sampling unit 207, man-machine interface (touch liquid crystal display)
209, microcomputer control unit 210, communication unit 211 etc. form.
Alternating Current Unit 201 connects with Regulation Control unit 202, compensation control unit 203, provides three-phase four-wire system friendship
Galvanic electricity source, and there are the defencive functions such as over-voltage, decompression, phase sequence, overcurrent.Regulation Control unit 202 and commutation control unit 206 connect
It connects, the connection of commutation control unit 206 is connected with commutation current transformer 205 again, compensation control unit 203 and compensator transformer 204
It is connected, commutation current transformer 205 is connected compensator transformer 204 simultaneously.Microcomputer control unit 210 is driven with motor control respectively
Unit 208, current sampling unit 207, man-machine interface (touch liquid crystal display) 209, communication unit 211 are connected.The friendship
Power distribution unit 201 is flowed, feature specifically includes that A.C. contactor, intermediate control relay, digital phase sequence relay, C grades of lightning protection
Device, the Regulation Control unit 202, which is mainly characterized in that using customization annular pressure regulator, and two pairs of limits are set and are opened
It closes, a pair leads to microcomputer control unit 210, and another pair scurries into electric control loop, while realizing and electrically and mechanically interlocking；Described
Commutation control unit 206 realizes power supply using 6 A.C. contactors and 6 intermediate relay composition exchange interlocking switching circuits
Output and input the control of the identical phase in position or reverse phase, the commutation unsteady flow of bus duct thermal cycle power supply subsidiary engine of the present invention, 205,
Make the phase of output single-phase power supply that mode of connection output and poor 180 DEG C of input phase can be consistent or switched with input.This hair
Bright to utilize bus duct thermal cycle power supply subsidiary engine anti-phase or in-phase stacking function, subsidiary engine constant-current source completely can instead of traditional
Rheostat is adjusted, and realizes that electric current accurately controls；Described 204 groups of voltage compensations of compensation control unit 203 and compensator transformer return
Road carries out high-accuracy voltage compensation to voltage-adjustable control loop, realizes high-precision constant current function；Microcomputer control unit 110 uses
STC12C5412AD single-chip microcontroller, for bus duct thermal cycle electric power host signal acquisition process and the output of current constant control order.
As the data processing centre of bus duct thermal cycle power supply, information collection, processing are carried out to AC system in a manner of fieldbus
Complete intelligent management, the result of information processing on the one hand by the information source as man-machine interface touch LCD screen,
On the other hand host computer monitoring system is transmitted to by communication interface and realizes real-time remote monitoring management.Micro computer monitoring unit letter
The result control of processing is ceased, and provide USB interface data to be automatically saved in USB flash disk, data can be transformed into EXCEL document
It is stored in computer.Microcomputer control unit 210 specially develops Full-automatic correction system (multistage broken line correction method), every in power supply
Five sections or more correction coefficient are automatically generated in phase adjustable extent, provide self-calibration function, while Shi Keshe overgauge is tested in temperature rise
Mode and positive and negative deviation mode, to be applicable in different tests requirement.AC sampling unit real-time monitoring AC power source electric current exports feelings
Information is simultaneously sent into micro computer monitoring unit by data/address bus by condition.Communication unit 211 of the present invention utilizes fieldbus skill
The automatic identification of electric power host and power supply subsidiary engine is realized in art or WIFI wireless telecommunications, realizes that microcomputer control unit interconnects.This
The invention Regulation Control unit 202, compensation control unit 203 and compensator transformer 204 combine, it is ensured that electric power host is defeated
Electric current precision of steady current≤0.5% out, it is constant that control transformer automatically keeps AC power source output electric current.
The characteristics of embodiment of the present invention, is: solve equipment volume existing for conventional busbars mains system temperature rise test it is big,
The test problem that time-consuming, energy consumption is higher, efficiency is lower and operating flexibility is poor, passes through the bus main line thermal cycle test device
And its test method, the automatic test for realizing the thermal cycle of bus mains system, using effect is good, is conducive to promote.
Although the present invention has been illustrated and described with reference to preferred embodiments, this profession ordinary skill
Personnel are it is to be appreciated that within the scope of the claims, can make various variation in form and details.
Claims (4)
1. a kind of bus main line thermal cycle test device, it is characterised in that: including bus duct thermal cycle electric power host (1), bus
Slot thermal cycle power supply subsidiary engine (2), thermocouple (4), connection copper bus-bar (5), is flexible coupling (6) and tests copper conductor at bus main line (3)
(7), the bus duct thermal cycle electric power host (1) connect with bus main line (3), the bus duct thermal cycle power supply subsidiary engine (2)
It is connect with bus main line (3).
2. bus main line thermal cycle test device according to claim 1, it is characterised in that: on the bus main line (3)
With bus main line tapping unit (31), bus main line input terminal (32), the bus duct thermal cycle electric power host (1) passes through company
Connect copper bus-bar (5), be flexible coupling (6) connect with bus main line input terminal (32), the bus duct thermal cycle power supply subsidiary engine (2) passes through
Test copper conductor (7) is connect with bus main line tapping unit (31), and the bus duct thermal cycle electric power host (1) connects thermocouple
(4), the thermocouple (4) connects bus main line (3), has bus trunk end (33) on the bus main line (3).
3. bus main line thermal cycle test device according to claim 1, it is characterised in that: the bus duct thermal cycle electricity
Source host (1) is connect with bus duct thermal cycle power supply subsidiary engine (2) by R485 communication interface, or is connected by WIFI wireless telecommunications
It connects.
4. the test method of bus main line thermal cycle test device according to claim 1, which is characterized in that including as follows
Step:
(1), bus duct thermal cycle electric power host (1) output end passes through copper bus-bar (5), be flexible coupling (6) and bus main line input terminal
(32) three are connected, and bus duct thermal cycle power supply subsidiary engine (2) output end is tapped by standard testing copper conductor (7) and bus main line
Unit (31) output end three is connected；Bus main line output end (33) is directly shorted with copper bus-bar；
(2), bus duct thermal cycle electric power host (1) is distributed on bus main line (3) by aviation socket multipoint thermocouple (4),
Carry out multipoint acquisition point；
(3), bus duct thermal cycle electric power host (1) and bus duct thermal cycle power supply subsidiary engine (2) power on respectively, operation power master
Machine man-machine interface sets bus main line (3) total current, tapping unit electric current, cycle-index, circulation time, and startup power supply, makes
Bus main line and tapping unit respectively reach test rated current；
(4), when bus main line (3) temperature rise reaches a steady state value, the temperature rise variation of bus rail temperature measurement point is no more than
Constant temperature requirement is complied with standard when 1k/h, bus main line thermal cycle test system automatically engages thermal cycling test, realizes bus duct heat
Power-cycled host (1) and bus duct thermal cycle power supply subsidiary engine (2) control start and stop simultaneously, and procedural test temperature is automatically recorded,
Stop test after 84 circulations, completes thermal cycling test, and record experimentation bus rail temperature.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111855470A (en) * | 2020-08-20 | 2020-10-30 | 海南电网有限责任公司海口供电局 | Thermal cycle test system and method for stranded carbon fiber conductor |
| CN111855470B (en) * | 2020-08-20 | 2023-08-25 | 海南电网有限责任公司海口供电局 | Stranded carbon fiber wire thermal cycle test system and method |
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