CN109828188A - Medium voltage frequency converter direct current reactor inductance measurement device - Google Patents

Medium voltage frequency converter direct current reactor inductance measurement device Download PDF

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Publication number
CN109828188A
CN109828188A CN201811572855.6A CN201811572855A CN109828188A CN 109828188 A CN109828188 A CN 109828188A CN 201811572855 A CN201811572855 A CN 201811572855A CN 109828188 A CN109828188 A CN 109828188A
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China
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electric line
feet
foot
module
capacitor
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CN201811572855.6A
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CN109828188B (en
Inventor
潘春雷
杨建平
赵增佳
韩军刚
马波
李妍
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Yunnan Dahongshan Pipeline Co Ltd
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Yunnan Dahongshan Pipeline Co Ltd
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Abstract

The invention discloses medium voltage frequency converter direct current reactor inductance measurement devices, including current detection module, external interface module, one-chip computer module and power supply module, the current detection module, external interface module and power supply module are connected with one-chip computer module;It is detected securely and reliably using the device, avoids being directly accessed 220V voltage, measure security risk existing for possible high current with ammeter;The accuracy of reactor insulation fault judgement is improved, the time for reducing artificial judgment, opening and inspecting reduces downtime.

Description

Medium voltage frequency converter direct current reactor inductance measurement device
Technical field
The present invention relates to inductance measurement device technical fields, and in particular to medium voltage frequency converter direct current reactor inductance measurement dress It sets.
Background technique
Since the effect of reactor in frequency converter use process is most important, and be easier to break down component it One, and common measuring instrumentss do not have accurate coil inductance measurement function, special measurement instrument costly and is not General electrical installation post indispensability instrument, this just gives us to bring in terms of Reactor Fault processing how fast and accurately to sentence The new problem of the degree of disconnected reactor insulation breakdown.
Summary of the invention
The purpose of the present invention is to provide a kind of medium voltage frequency converter direct current reactor inductance measurement devices, can be quick and precisely The degree for judging reactor insulation breakdown.
The invention adopts the following technical scheme: a kind of medium voltage frequency converter direct current reactor inductance measurement device, including electric current Detection module, external interface module, one-chip computer module and power supply module, the current detection module, external interface module It is connected with power supply module with one-chip computer module.
Further, the power supply module include power supply adaptor supply input module, DC/12 turn DC5V module and DC5V turns DC3.3V module.
Further, the DC/12 turns the output end that DC5V module is connected to power supply adaptor supply input module, DC/ 12 turns of DC5V modules select TPS5430DDA chip, wherein the 12V output end of power supply adaptor supply input module is connected to VIN foot, meanwhile, the 12V output end of power supply adaptor supply input module is connected to GND foot, in the connection of VIN foot and GND foot Polar capacitor C22 and conventional capacitance C23 are set side by side between route, the two intersection is set as zero potential;TPS5430DDA The B00T foot of chip is provided with 5V output end, and capacitor C19, inductance L1 are disposed on route, sets in the rear end of capacitor C19 It is equipped with the PH foot that electric line is connected to TPS5430DDA chip;It is equipped with electric line in the front end of inductance L1, is provided in electric line Diode D11, the anode of diode D11 are set as zero potential, and the rear end of inductance L1 is set side by side with 2 electric lines, close to electricity Feel and be provided with capacitor C20 in an electric line of L1, polar capacitor C21, capacitor C20 and polarity are provided in another electric line Capacitor C21 tail end connects and is set as zero potential;The VSNS foot of TPS5430DDA chip is provided with electric line, sets in electric line It is equipped with resistance R23, the end of resistance R23 is set as zero potential, and the front end of 5V output end and resistance R23 is provided with electric line and connects It connects and is provided with resistance R22:TPS5430DDA chip PwPd foot in its electric line and is set as zero potential.
Further, the DC5V turns DC3.3V module and is connected to the 5V output end that DC/12 turns DC5V module, wherein DC5V turn DC3.3V module select RT9193 chip, the VIN foot of RT9193 chip be connected to DC/12 turn DC5V module 5V it is defeated Outlet, insurance resistance F3 is additionally provided in electric line, and the rear end of insurance resistance F3 is set side by side with two electric lines and is connected to The GND foot of RT9193 chip is provided with capacitor C24 in the electric line of insurance resistance F3, is provided in another electric line Capacitor C25, the two end are connected and are set as zero potential;The EN foot of RT9193 chip is provided with electric line and is connected to VIN foot, Resistance R24 is provided between both;The VOU foot of RT9193 chip is provided with 3.3V output electric line, in this electric line side by side 3 electric lines are provided with, electric line is respectively arranged with capacitor C23, C27 and C28, and the end of three capacitors is connected and is set as zero Current potential;The BP foot of RT9193 chip is provided with electric line, and capacitor C29 is provided in electric line, and the end capacitor C29 is set as zero electricity Position.
Further, the single-chip microcontroller of one-chip computer module selects STM32F072RBT6 single-chip microcontroller.
Further, 46 feet of the STM32F072RBT6 single-chip microcontroller and 49 feet are connected with program download interface; 13,19,32,64,48 feet of STM32F072RBT6 single-chip microcontroller, which are connected with each other, becomes+3.3V interface a foot; 63,47,31,18,12 feet of STM32F072RBT6 single-chip microcontroller are connected with each other and are set as zero potential GND foot; 59 feet of STM32F072RBT6 single-chip microcontroller are connected to the SCL foot of AT24C02D-SSHM-TEEP memory by electric line, 61 feet of STM32F072RBT6 single-chip microcontroller are connected to the SDA foot of AT24C02D-SSHM-TEEP memory by electric line, and two It is connected between electric line by electric line, is disposed with resistance R20 and R21 in electric line, passes through electricity between resistance R20 and R21 Connection extremely+3.3V interface foot;The VCC foot of AT24C02D-SSHM-TEEP memory is connected to by electric line + 3.3V interface the foot of STM32F072RBT6 single-chip microcontroller, and branch electricity electric line is provided in this electric line, it is arranged in electric line There is capacitor C18, the rear end of capacitor C18 is set as zero potential;It is provided with electric line on 7 feet of STM32F072RBT6 single-chip microcontroller, electricity Capacitor C17 is provided on route, the rear end of capacitor C17 is set as zero potential, and the front end of capacitor C17 is provided with the connection of branch electric line To+3.3V interface foot, resistance R17 is provided in the branch electric line;5,6 feet of STM32F072RBT6 single-chip microcontroller pass through electric line It connects, is provided with resistance R13 in electric line, resistance R13 is provided with a branch electric line close to one end of 5 feet and leans on resistance R13 One end of nearly 6 foot is connected, and capacitor C15 and C16 are provided in branch electric line, this branch electric line is provided with multipole transistor X1, and one The grade connection front end capacitor C15, a pole are connected to the rear end C16, and left and right the two poles of the earth are linking between C15 and C16 after being connected; Resistance R14 is provided on 60 feet of STM32F072RBT6 single-chip microcontroller, the end of R14 is set as zero potential;STM32F072RBT6 Six electric lines are set side by side on+3.3V interface the foot of single-chip microcontroller, be respectively arranged in electric line capacitor C9, C10, C11, The end of C12, C13, C14, C9, C10, C11, C12, C13, C14 capacitor are connected with each other and are set as zero potential; It is provided with electric line on 8 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, electric line is disposed with hair Light double section tube D4 and resistance R10;It is provided with electric line on 9 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, Its electric line is disposed with luminous double section tube D5 and resistance R11;Live wire is set on 10 feet of STM32F072RBT6 single-chip microcontroller Road is connected to+3.3V interface foot, and electric line is disposed with luminous double section tube D7;12 feet of STM32F072RBT6 single-chip microcontroller On be provided with electric line and be connected to+3.3V interface foot, electric line is disposed with luminous double section tube D8; STM32F072RBT6 It is provided with electric line on the zero potential GND foot of single-chip microcontroller and is connected to+3.3V interface foot, luminous two section is disposed in electric line Pipe D6 and resistance R12;It is provided with electric line on 24 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, electric line On be disposed with resistance R16 and R15, a branch electric line is provided between resistance R16 and R15 and is connected to zero potential GND foot, Button switch S1 is provided in branch electric line;Electric line, which is provided with, on 25 feet of STM32F072RBT6 single-chip microcontroller is connected to+3.3V Interface foot is disposed with resistance R19 and R18 in electric line, and a branch electric line connection is provided between resistance R19 and R18 To zero potential GND foot, button switch S2 is provided in branch electric line;Buzzing is provided on 56 foot of TM32F072RBT6 single-chip microcontroller The power supply of device, buzzer turns DC5V module+5V out-put supply using DC/12.
Further, portion's interface module includes Low-Volt Leakage transmitter output module, 4 socket connection modules and 10 rows Plug-in module, 1,2,3 feet of the 10 socket connection module, which are provided with electric line and are connected with each other and are connected to DC5V, turns DC3.3V mould Block+3.3V output end is provided in the electric line between electric line interlinkage and 1 foot in 1,2,3 feet of 10 socket connection modules It is provided with resistance R7, branch electric line, branch are set before 1,2,3 feet in 10 socket connection modules are provided with electric line interlinkage Capacitor C8 is provided in electric line, the rear end capacitor C8 is set as zero potential, and 4,5,6,7 feet of 10 socket connection modules are separately connected To 33,34,35,36 feet of STM32F072RBT6 single-chip microcontroller, 10 feet of 10 socket connection modules are provided with electric line and are connected to 57 feet of STM32F072RBT6 single-chip microcontroller are disposed with triode Q3 and resistance R9, the triode Q3 in electric line Use NPN type triode.
Further, the Low-Volt Leakage transmitter output module selects the output of MAX3232CSE chip voltage transmitter Module selects MAX3232CSE chip: electric line connection, electric line are provided between 1 foot and 3 feet of MAX3232CSE chip On be provided with capacitor C3;It is provided with electric line connection between 4 feet and 5 feet of MAX3232CSE chip, is provided in electric line Capacitor C5;Electric line connection is provided between 11 feet and 12 feet of MAX3232CSE chip: 10 feet of MAX3232CSE chip are logical Electric line is crossed to connect with 16 feet of STM32F072RBT6 single-chip microcontroller: 9 feet of MAX3232CSE chip by electric line with 17 feet of STM32F072RBT6 single-chip microcontroller connect;Live wire is set in 10 feet of MAX3232CSE chip and the electric line of 9 feet Road connection, is disposed with light emitting diode D3, resistance R6, resistance R5 and light emitting diode D2, between resistance R6, resistance R5 It is provided with electric line and is connected to+3.3V the output end that DC5V turns DC3.3V module;15 feet of MAX3232CSE chip are set as zero Current potential;It is provided with electric line on 2 feet of MAX3232CSE chip, capacitor C4, the end setting of capacitor C4 are provided in electric line For zero potential;It is provided with electric line on 16 feet of MAX3232CSE chip and is connected to+3.3V the output that DC5V turns DC3.3V module It holds, is provided with branch electric line on 16 feet, capacitor C6 is provided in branch electric line, the end of capacitor C6 is set as zero potential; 7 feet of MAX3232CSE chip are connected to 4 socket connection module, 2 foot by electric line;8 feet of MAX3232CSE chip pass through electricity For connection to 4 socket connection module, 3 foot, 1 foot of 4 socket connection modules is connected to the+5V output end that DC/12 turns DC5V module, and 4 4 feet of socket connection module are set as zero potential;It is provided with electric line on 6 feet of MAX3232CSE chip, is provided in electric line The end of capacitor C7, capacitor C7 are connected to zero potential.
Further, the current detection module includes 30A current transformer module and 30A relay module: described 30A current transformer module is provided with 30A current transformer, and 1,2 feet of mutual inductor are respectively connected to 2,3 that 8 feet integrate galvanic couple On foot, 8 feet, which integrate, to be provided with electric line on 7 feet of galvanic couple and is connected to+3.3V the output end that DC5V turns DC3.3V module, the two it Between be provided with branch circuit, capacitor C1 is provided on branch circuit, the end of capacitor C1 is set as zero potential;8 feet integrate 6 feet of galvanic couple On be provided with electric line and be connected to the 26 of STM32F072RBT6 single-chip microcontroller, 27 feet, resistance R2, resistance R2 are provided in electric line End be provided with branch electric line, be provided with capacitor C2 in branch electric line, the end of capacitor C2 is set as zero potential, and 8 feet are integrated 1 foot of galvanic couple is provided with electric line with 6 feet and is connected to, and resistance R1 is provided in electric line.
Further, relay is provided in the 30A relay module, be provided on 1 foot of relay electric line with 14 feet of STM32F072RBT6 single-chip microcontroller connect, and are disposed with triode Q and resistance R3, the triode Q1 in electric line One pole N is set as zero potential, the front end of resistance R3 be set to electric line practice grade to triode Q1 be zero potential pole, and circuit On be provided with resistance R4;It is provided with electric line connection on 1,2 feet of relay, is provided with diode D1, relay 2 in electric line 12V stream is exported on foot;3,4 feet of relay are connect with 220V power supply, are connected and are provided with overcurrent protection on circuit.
Compared with prior art, it the beneficial effects of the present invention are: detecting securely and reliably using the device, avoids being directly accessed 220V voltage measures security risk existing for possible high current with ammeter;Improve the accurate of reactor insulation fault judgement Property, the time for reducing artificial judgment, opening and inspecting, reduction downtime.
Detailed description of the invention
Fig. 1 is 30A Current Mutual Inductance module of the present invention.
Fig. 2 is that the present invention 30 pacifies relay module.
Fig. 3 is external interface module of the present invention.
Fig. 4 is this hair one-chip computer module.
Fig. 5 is without power supply module of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Embodiment 1:
Medium voltage frequency converter direct current reactor inductance measurement device as described in Fig. 1 to 5, including current detection module, external interface Module, one-chip computer module and power supply module, the current detection module, external interface module and power supply module and list Piece machine module is connected, and the present invention is tested the logical 220 volts of voltages of a power frequency of reactor by giving, and measures the electric current by coil, The impedance value (coil resistance+coil reactance) of coil is calculated using Ohm's law, to calculate inductance value to judge line The degree of insulation breakdown is enclosed, which is equipped with an overcurrent protective device, can in the case where coil insulation breakdown compares serious situation Effectively to cut through the high current of coil, to prevent from further being damaged and guaranteed by test coil the safety of survey crew.This One detection device of sample can quickly judge reactor winding quality, also securely and reliably.
For the present invention.
(1) by leading to 220 volts of voltages of a power frequency to tested reactor, 220 volts of power-frequency voltages are in actual operation everywhere It is desirable, it is convenient and efficient.
(2) detection device equipped with overcurrent alarm and instantaneous over-current device, to ensure testing staff, detection device and by The safety of test coil.
(3) under normal conditions, the electricity that an intact medium voltage frequency converter reactor winding of insulation passes through under 220 volts of voltage Stream all very littles, this is because the intact coil inductance that insulate is larger, with the increase of coil insulation breakdown the number of turns, coil inductance Value sharply declines, by Z=2 π f.L
Z- coil impedance
L- coil inductance
F- power frequency
Coil impedance Z variation directly proportional to coil inductance L, by Ohm's law I=U/Z, it is known that I increases after coil impedance becomes smaller Greatly.
(4) device is directly accessed 220 volts of power-frequency voltages when detecting, and coil can be calculated after direct survey calculation Inductance value, by the inductance value and producer factory nameplate on power frequency electric inductance value compare, can accurate judgement coil whether there is Insulation breakdown problem.
(5) coil actual inductance value is calculated and be shown through SCM program inside detection device, as a result quick and precisely, calculates Formula is i.e.: Z=U/I, L=Z/2 π f
Wherein, the power supply inside equipment is being exported after conversion using low pressure, and specific module is as follows:
Power supply module includes power supply adaptor supply input module, DC/12 turns DC5V module and DC5V turns DC3.3V module, The power supply of 220V is subjected to conversion and copes with different chip needs, the electric current for exporting different voltage is powered;DC/12 turns DC5V module is connected to the output end of power supply adaptor supply input module, and DC/12 turns DC5V module and selects TPS5430DDA core Piece, wherein the 12V output end of power supply adaptor supply input module is connected to VIN foot, meanwhile, power supply adaptor supply input The 12V output end of module is connected to GND foot, and polar capacitor C22 is set side by side between VIN foot and the connection line of GND foot With conventional capacitance C23, the two intersection is set as zero potential;The B00T foot of TPS5430DDA chip is provided with 5V output end, It is disposed with capacitor C19, inductance L1 on route, the rear end of capacitor C19 is provided with electric line and is connected to TPS5430DDA core The PH foot of piece;It is equipped with electric line in the front end of inductance L1, diode D11, the anode setting of diode D11 are provided in electric line For zero potential, the rear end of inductance L1 is set side by side with 2 electric lines, is provided with capacitor in an electric line of inductance L1 C20, polar capacitor C21 is provided in another electric line, and capacitor C20 connect with polar capacitor C21 tail end and is set as zero electricity Position;The VSNS foot of TPS5430DDA chip is provided with electric line, and resistance R23, the end setting of resistance R23 are provided in electric line For zero potential, the front end of resistance R23 is provided with electric line it connect in its electric line in 5V output end and be provided with resistance R22: TPS5430DDA chip PwPd foot is set as zero potential.
DC5V turns DC3.3V module and is connected to the 5V output end that DC/12 turns DC5V module, wherein DC5V turns DC3.3V mould Block selects RT9193 chip, and the VIN foot of RT9193 chip is connected to the 5V output end that DC/12 turns DC5V module, in electric line It is additionally provided with insurance resistance F3, the rear end of insurance resistance F3 is set side by side with the GND that two electric lines are connected to RT9193 chip Foot is provided with capacitor C24 in the electric line of insurance resistance F3, capacitor C25, the two end is provided in another electric line It is connected and is set as zero potential;The EN foot of RT9193 chip is provided with electric line and is connected to VIN foot, is provided between both Resistance R24;The VOU foot of RT9193 chip is provided with 3.3V output electric line, is set side by side with 3 electric lines in this electric line, Electric line is respectively arranged with capacitor C23, C27 and C28, and the end of three capacitors is connected and is set as zero potential;RT9193 chip BP foot is provided with electric line, and capacitor C29 is provided in electric line, and the end capacitor C29 is set as zero potential.
In the selection of single-chip microcontroller, the single-chip microcontroller of one-chip computer module selects STM32F072RBT6 single-chip microcontroller, wherein described 46 feet and 49 feet of STM32F072RBT6 single-chip microcontroller are connected with program download interface for loading procedure; 13,19,32,64,48 feet of STM32F072RBT6 single-chip microcontroller, which are connected with each other, becomes+3.3V interface a foot; 63,47,31,18,12 feet of STM32F072RBT6 single-chip microcontroller are connected with each other and are set as zero potential GND foot; 59 feet of STM32F072RBT6 single-chip microcontroller are connected to the SCL foot of AT24C02D-SSHM-TEEP memory by electric line, 61 feet of STM32F072RBT6 single-chip microcontroller are connected to the SDA foot of AT24C02D-SSHM-TEEP memory by electric line, and two It is connected between electric line by electric line, is disposed with resistance R20 and R21 in electric line, passes through electricity between resistance R20 and R21 Connection extremely+3.3V interface foot;The VCC foot of AT24C02D-SSHM-TEEP memory is connected to by electric line + 3.3V interface the foot of STM32F072RBT6 single-chip microcontroller, and branch electric line is provided in this electric line, it is provided in electric line The rear end of capacitor C18, capacitor C18 are set as zero potential;Electric line, electric wire are provided on 7 feet of STM32F072RBT6 single-chip microcontroller Road is provided with capacitor C17, and the rear end of capacitor C17 is set as zero potential, and the front end of capacitor C17 is provided with branch electric line and is connected to + 3.3V interface foot is provided with resistance R17 in the branch electric line;5,6 feet of STM32F072RBT6 single-chip microcontroller are connected by electric line It connects, resistance R13 is provided in electric line, resistance R13 is provided with a branch electric line and resistance R13 close to 6 close to one end of 5 feet One end of foot is connected, and capacitor C15 and C16 is provided in branch electric line, this branch electric line is provided with multipole transistor X1, a cascade The front end capacitor C15 is connect, a pole is connected to the rear end C16, and left and right the two poles of the earth are linking between C15 and C16 after being connected; Resistance R14 is provided on 60 feet of STM32F072RBT6 single-chip microcontroller, the end of R14 is set as zero potential;STM32F072RBT6 Six electric lines are set side by side on+3.3V interface the foot of single-chip microcontroller, be respectively arranged in electric line capacitor C9, C10, C11, The end of C12, C13, C14, C9, C10, C11, C12, C13, C14 capacitor are connected with each other and are set as zero potential; It is provided with electric line on 8 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, electric line is disposed with hair Light double section tube D4 and resistance R10;It is provided with electric line on 9 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, Its electric line is disposed with luminous double section tube D5 and resistance R11;Live wire is set on 10 feet of STM32F072RBT6 single-chip microcontroller Road is connected to+3.3V interface foot, and electric line is disposed with luminous double section tube D7;12 feet of STM32F072RBT6 single-chip microcontroller On be provided with electric line and be connected to+3.3V interface foot, electric line is disposed with luminous double section tube D8;STM32F072RBT6 It is provided with electric line on the zero potential GND foot of single-chip microcontroller and is connected to+3.3V interface foot, luminous two section is disposed in electric line Pipe D6 and resistance R12;It is provided with electric line on 24 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, electric wire Road is disposed with resistance R16 and R15, and a branch electric line is provided between resistance R16 and R15 and is connected to zero potential GND Foot is provided with button switch S1 in branch electric line;Be provided on 25 feet of STM32F072RBT6 single-chip microcontroller electric line be connected to+ 3.3V interface foot is disposed with resistance R19 and R18 in electric line, a branch electric line is provided between resistance R19 and R18 It is connected to zero potential GND foot, is provided with button switch S2 in branch electric line;It is provided on 56 foot of TM32F072RBT6 single-chip microcontroller The power supply of buzzer, buzzer turns DC5V module+5V out-put supply using DC/12.
Connection setting possesses external interface on single-chip microcontroller, and portion's interface module includes the output of Low-Volt Leakage transmitter Module, 4 socket connection modules and 10 socket connection modules, 1,2,3 feet of the 10 socket connection module are provided with electric line interconnection And be connected to DC5V and turn DC3.3V module+3.3V output end, 1,2,3 feet of 10 socket connection modules are provided with electric line and mutually interconnect It is provided with resistance R7 in electric line between contact and 1 foot, 1,2,3 feet in 10 socket connection modules are provided with electric line and mutually interconnect Branch electric line is set before contact, is provided with capacitor C8 in branch electric line, the rear end capacitor C8 is set as zero potential, 10 socket connection modules 4,5,6,7 feet be respectively connected to 33,34,35,36 feet of STM32F072RBT6 single-chip microcontroller, 10 feet of 10 socket connection modules are set 57 feet that electric line is connected to STM32F072RBT6 single-chip microcontroller are equipped with, are disposed with triode Q3 and resistance in electric line R9, the triode Q3 use NPN type triode.
The Low-Volt Leakage transmitter output module selects MAX3232CSE chip: 1 foot of MAX3232CSE chip with It is provided with electric line connection between 3 feet, is provided with capacitor C3 in electric line;It is set between 4 feet and 5 feet of MAX3232CSE chip It is equipped with electric line connection, is provided with capacitor C5 in electric line;Electricity is provided between 11 feet and 12 feet of MAX3232CSE chip Connection: 10 feet of MAX3232CSE chip are connect by electric line with 16 feet of STM32F072RBT6 single-chip microcontroller: 9 feet of MAX3232CSE chip are connect by electric line with 17 feet of STM32F072RBT6 single-chip microcontroller;MAX3232CSE chip 10 feet and the electric line of 9 feet on be provided with electric line and be connected to, be disposed with light emitting diode D3, resistance R6, resistance R5 and Light emitting diode D2 is provided with electric line and is connected to+3.3V the output that DC5V turns DC3.3V module between resistance R6, resistance R5 End;15 feet of MAX3232CSE chip are set as zero potential;Electric line, electric line are provided on 2 feet of MAX3232CSE chip On be provided with capacitor C4, the end of capacitor C4 is set as zero potential;Electric line company is provided on 16 feet of MAX3232CSE chip It is connected to+3.3V the output end that DC5V turns DC3.3V module, branch electric line is provided on 16 feet, is provided with capacitor in branch electric line The end of C6, capacitor C6 are set as zero potential;7 feet of MAX3232CSE chip are connected to 4 socket connection modules 2 by electric line Foot;8 feet of MAX3232CSE chip are connected to 4 socket connection module, 3 foot by electric line, and 1 foot of 4 socket connection modules is connected to DC/12 turns the+5V output end of DC5V module, and 4 feet of 4 socket connection modules are set as zero potential;6 feet of MAX3232CSE chip On be provided with electric line, capacitor C7 is provided in electric line, the end of capacitor C7 is connected to zero potential.
The current detection module includes 30A current transformer module and 30A relay module: the 30A Current Mutual Inductance Device module is provided with 30A current transformer, and 1,2 feet of mutual inductor are respectively connected to 8 feet and integrate on 2,3 feet of galvanic couple, and 8 feet are integrated It is provided with electric line on 7 feet of galvanic couple and is connected to+3.3V the output end that DC5V turns DC3.3V module, branch electricity is provided therebetween Road is provided with capacitor C1 on branch circuit, and the end of capacitor C1 is set as zero potential;Live wire is set on 6 feet of the integrated galvanic couple of 8 feet Road is connected to the 26 of STM32F072RBT6 single-chip microcontroller, 27 feet, and resistance R2 is provided in electric line, and the end of resistance R2 is provided with Branch electric line is provided with capacitor C2 in branch electric line, and the end of capacitor C2 is set as zero potential, and 8 feet integrate 1 foot and 6 of galvanic couple Foot is provided with electric line connection, is provided with resistance R1 in electric line.
Relay is provided in the 30A relay module, be provided on 1 foot of relay electric line with 14 feet of STM32F072RBT6 single-chip microcontroller connect, and are disposed with triode Q and resistance R3, the triode Q1 in electric line One pole N is set as zero potential, the front end of resistance R3 be set to electric line practice grade to triode Q1 be zero potential pole, and circuit On be provided with resistance R4;It is provided with electric line connection on 1,2 feet of relay, is provided with diode D1, relay 2 in electric line 12V stream is exported on foot;3,4 feet of relay are connect with 220V power supply, are connected and are provided with overcurrent protection on circuit.
The present apparatus when in use, opens equipment, and equipment is initialized automatically, then starts to be detected, and opens power frequency 220 volts of voltages, detect electric current, judge electric current whether less than 20 amperes, judgement otherwise turn off 220 volts of voltages of power frequency, display as a result, Judgement is then to enter inductance to calculate, and then turns off 220 volts of voltages of power frequency again, shows as a result, going successively to detecting step.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will fall in this Shen It please be within disclosed scope and spirit.More specifically, disclose in the application, drawings and claims in the range of, can With the building block and/or a variety of variations and modifications of layout progress to theme combination layout.In addition to building block and/or layout Outside the modification and improvement of progress, to those skilled in the art, other purposes also be will be apparent.

Claims (10)

1. a kind of medium voltage frequency converter direct current reactor inductance measurement device, it is characterised in that: connect including current detection module, outside Mouth mold block, one-chip computer module and power supply module, the current detection module, external interface module and power supply module with One-chip computer module is connected.
2. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the power supply Power module includes power supply adaptor supply input module, DC/12 turns DC5V module and DC5V turns DC3.3V module.
3. medium voltage frequency converter direct current reactor inductance measurement device according to claim 2, it is characterised in that: the DC/ 12 turns of DC5V modules are connected to the output end of power supply adaptor supply input module, and DC/12 turns the selection of DC5V module TPS5430DDA chip, wherein the 12V output end of power supply adaptor supply input module is connected to VIN foot, meanwhile, power supply is suitable The 12V output end of orchestration supply input module is connected to GND foot, is set side by side between VIN foot and the connection line of GND foot Polar capacitor C22 and conventional capacitance C23, the two intersection are set as zero potential;The B00T foot of TPS5430DDA chip is arranged There is 5V output end, capacitor C19, inductance L1 are disposed on route, the rear end of capacitor C19 is provided with electric line and is connected to The PH foot of TPS5430DDA chip;It is equipped with electric line in the front end of inductance L1, is provided with diode D11, diode in electric line The anode of D11 is set as zero potential, and the rear end of inductance L1 is set side by side with 2 electric lines, close to an electric line of inductance L1 On be provided with capacitor C20, polar capacitor C21 is provided in another electric line, capacitor C20 is connect with polar capacitor C21 tail end And it is set as zero potential;The VSNS foot of TPS5430DDA chip is provided with electric line, and resistance R23, resistance are provided in electric line The end of R23 is set as zero potential, is provided with electric line with the front end of resistance R23 in 5V output end and connect in its electric line and is arranged There is resistance R22:TPS5430DDA chip PwPd foot to be set as zero potential.
4. medium voltage frequency converter direct current reactor inductance measurement device according to claim 2, it is characterised in that: the DC5V Turn DC3.3V module and be connected to the 5V output end that DC/12 turns DC5V module, wherein DC5V turns DC3.3V module and selects RT9193 core Piece, the VIN foot of RT9193 chip are connected to the 5V output end that DC/12 turns DC5V module, and insurance electricity is additionally provided in electric line F3 is hindered, the rear end of insurance resistance F3 is set side by side with the GND foot that two electric lines are connected to RT9193 chip, close to insurance resistance It is provided with capacitor C24 in the electric line of F3, capacitor C25 is provided in another electric line, the two end is connected and is set as zero Current potential;The EN foot of RT9193 chip is provided with electric line and is connected to VIN foot, is provided with resistance R24 between both; RT9193 The VOU foot of chip is provided with 3.3V output electric line, is set side by side with 3 electric lines in this electric line, electric line is respectively set There are capacitor C23, C27 and C28, the end of three capacitors is connected and is set as zero potential;Live wire is arranged in the BP foot of RT9193 chip Road is provided with capacitor C29 in electric line, and the end capacitor C29 is set as zero potential.
5. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the monolithic The single-chip microcontroller of machine module selects STM32F072RBT6 single-chip microcontroller.
6. medium voltage frequency converter direct current reactor inductance measurement device according to claim 5, it is characterised in that: described 46 feet and 49 feet of STM32F072RBT6 single-chip microcontroller are connected with program download interface;STM32F072RBT6 single-chip microcontroller 13,19,32,64,48 feet, which are connected with each other, becomes+3.3V interface a foot;STM32F072RBT6 single-chip microcontroller 63,47,31, 18,12 feet are connected with each other and are set as zero potential GND foot;59 feet of STM32F072RBT6 single-chip microcontroller are connected to by electric line 61 feet of the SCL foot of AT24C02D-SSHM-TEEP memory, STM32F072RBT6 single-chip microcontroller are connected to by electric line The SDA foot of AT24C02D-SSHM-TEEP memory is connected by electric line between two electric lines, is disposed in electric line Resistance R20 and R21 are connected to+3.3V interface foot by electric line between resistance R20 and R21;AT24C02D-SSHM-TEEP The VCC foot of memory is connected to the+3.3V interface foot of STM32F072RBT6 single-chip microcontroller by electric line, and sets in this electric line It is equipped with branch electric line, capacitor C18 is provided in electric line, the rear end of capacitor C18 is set as zero potential; STM32F072RBT6 It is provided with electric line on 7 feet of single-chip microcontroller, capacitor C17 is provided in electric line, the rear end of capacitor C17 is set as zero potential, electricity The front end for holding C17 is provided with branch electric line and is connected to+3.3V interface foot, is provided with resistance R17 in the branch electric line; 5,6 feet of STM32F072RBT6 single-chip microcontroller are connected by electric line, are provided with resistance R13 in electric line, resistance R13 is close to 5 feet One end be provided with a branch electric line and be connected with resistance R13 close to one end of 6 feet, be provided in branch electric line capacitor C15 and C16, this branch electric line are provided with multipole transistor X1, and level-one connects the front end capacitor C15, and a pole is connected to the rear end C16, left and right two It is being linked between C15 and C16 after being extremely connected;It is provided with resistance R14 on 60 feet of STM32F072RBT6 single-chip microcontroller, R14's End is set as zero potential;Six electric lines, electric wire are set side by side on+3.3V interface the foot of STM32F072RBT6 single-chip microcontroller Road is respectively arranged with capacitor C9, C10, C11, C12, C13, C14, and the end of C9, C10, C11, C12, C13, C14 capacitor is mutual It connects and is set as zero potential;It is provided with electric line on 8 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, Its electric line is disposed with luminous double section tube D4 and resistance R10;Live wire is set on 9 feet of STM32F072RBT6 single-chip microcontroller Road is connected to+3.3V interface foot, and electric line is disposed with luminous double section tube D5 and resistance R11;STM32F072RBT6 is mono- It is provided with electric line on 10 feet of piece machine and is connected to+3.3V interface foot, electric line is disposed with luminous double section tube D7; It is provided with electric line on 12 feet of STM32F072RBT6 single-chip microcontroller and is connected to+3.3V interface foot, electric line is disposed with hair Light double section tube D8;Electric line, which is provided with, on the zero potential GND foot of STM32F072RBT6 single-chip microcontroller is connected to+3.3V interface foot, Luminous double section tube D6 and resistance R12 is disposed in electric line;Electricity is provided on 24 feet of STM32F072RBT6 single-chip microcontroller Connection is disposed with resistance R16 and R15 in electric line, is provided with one between resistance R16 and R15 to+3.3V interface foot Item branch electric line is connected to zero potential GND foot, is provided with button switch S1 in branch electric line;STM32F072RBT6 single-chip microcontroller Be provided with electric line on 25 feet and be connected to+3.3V interface foot, be disposed with resistance R19 and R18 in electric line, resistance R19 and It is provided with a branch electric line between R18 and is connected to zero potential GND foot, is provided with button switch S2 in branch electric line; Buzzer is provided on 56 foot of TM32F072RBT6 single-chip microcontroller, the power supply of buzzer turns DC5V module+5V output electricity using DC/12 Source.
7. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the portion connects Mouth mold block includes Low-Volt Leakage transmitter output module, 4 socket connection modules and 10 socket connection modules, the 10 socket connection module 1,2,3 feet be provided with electric line and be connected with each other and be connected to DC5V and turn DC3.3V module+3.3V output end, connect mould in 10 sockets It is provided with resistance R7 in the electric line that 1,2,3 feet of block are provided between electric line interlinkage and 1 foot, is connecing mould in 10 sockets Branch electric line is arranged before being provided with electric line interlinkage in 1,2,3 feet of block, is provided with capacitor C8, capacitor in branch electric line The rear end C8 is set as zero potential, 4,5,6,7 feet of 10 socket connection modules be respectively connected to STM32F072RBT6 single-chip microcontroller 33, 34,35,36 foot, 10 feet of 10 socket connection modules are provided with 57 feet that electric line is connected to STM32F072RBT6 single-chip microcontroller, electricity It is disposed with triode Q3 on route and resistance R9, the triode Q3 use NPN type triode.
8. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the low drain It loses voltage transmitter output module and selects MAX3232CSE chip: being provided with electricity between 1 foot and 3 feet of MAX3232CSE chip Connection is provided with capacitor C3 in electric line;Electric line company is provided between 4 feet and 5 feet of MAX3232CSE chip It connects, capacitor C5 is provided in electric line;Electric line connection is provided between 11 feet and 12 feet of MAX3232CSE chip: 10 feet of MAX3232CSE chip are connect by electric line with 16 feet of STM32F072RBT6 single-chip microcontroller: MAX3232CSE chip 9 feet connect with 17 feet of STM32F072RBT6 single-chip microcontroller by electric line;10 feet of MAX3232CSE chip and the electricity of 9 feet It is provided with electric line connection on route, is disposed with light emitting diode D3, resistance R6, resistance R5 and light emitting diode D2, electricity Electric line, which is provided with, between resistance R6, resistance R5 is connected to the+3.3V output end that DC5V turns DC3.3V module;MAX3232CSE core 15 feet of piece are set as zero potential;It is provided with electric line on 2 feet of MAX3232CSE chip, capacitor C4 is provided in electric line, The end of capacitor C4 is set as zero potential;It is provided with electric line on 16 feet of MAX3232CSE chip and is connected to DC5V turns + 3.3V the output end of DC3.3V module is provided with branch electric line on 16 feet, capacitor C6 is provided in branch electric line, capacitor C6's End is set as zero potential;7 feet of MAX3232CSE chip are connected to 4 socket connection module, 2 foot by electric line; 8 feet of MAX3232CSE chip are connected to 4 socket connection module, 3 foot by electric line, and 1 foot of 4 socket connection modules is connected to DC/12 Turn+5V the output end of DC5V module, 4 feet of 4 socket connection modules are set as zero potential;It is arranged on 6 feet of MAX3232CSE chip Live wire road is provided with capacitor C7 in electric line, and the end of capacitor C7 is connected to zero potential.
9. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the electric current Detection module includes 30A current transformer module and 30A relay module: the 30A current transformer module is provided with 30A current transformer, 1,2 feet of mutual inductor are respectively connected to 8 feet and integrate on 2,3 feet of galvanic couple, and 8 feet integrate on 7 feet of galvanic couple It is provided with electric line and is connected to+3.3V the output end that DC5V turns DC3.3V module, branch circuit is provided therebetween, on branch circuit It is provided with capacitor C1, the end of capacitor C1 is set as zero potential;Electric line is provided on 6 feet of the integrated galvanic couple of 8 feet to be connected to 26,27 feet of STM32F072RBT6 single-chip microcontroller are provided with resistance R2 in electric line, and the end of resistance R2 is provided with branch electric line, Capacitor C2 is provided in branch electric line, the end of capacitor C2 is set as zero potential, and 8 feet integrate 1 foot of galvanic couple and 6 feet are provided with electricity Route is connected to, and is provided with resistance R1 in electric line.
10. medium voltage frequency converter direct current reactor inductance measurement device according to claim 1, it is characterised in that: the 30A It is provided with relay in relay module, 14 feet of electric line Yu STM32F072RBT6 single-chip microcontroller are provided on 1 foot of relay It connects, is disposed with mono- pole N triode Q and resistance R3, the triode Q1 in electric line and is set as zero potential, resistance R3 To be set to electric line to practice grade to triode Q1 be zero potential pole for front end, and resistance R4 is provided on circuit;1, the 2 of relay It is provided with electric line connection on foot, diode D1 is provided in electric line, output 12V stream on 2 foot of relay;3, the 4 of relay Foot is connect with 220V power supply, is connected and is provided with overcurrent protection on circuit.
CN201811572855.6A 2018-12-21 2018-12-21 Inductance measuring device for direct current reactor of medium voltage frequency converter Active CN109828188B (en)

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