CN103715909B - A kind of electric locomotive electronic mutual inductor and using method thereof - Google Patents
A kind of electric locomotive electronic mutual inductor and using method thereof Download PDFInfo
- Publication number
- CN103715909B CN103715909B CN201310014819.9A CN201310014819A CN103715909B CN 103715909 B CN103715909 B CN 103715909B CN 201310014819 A CN201310014819 A CN 201310014819A CN 103715909 B CN103715909 B CN 103715909B
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- locomotive
- voltage
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 54
- 230000008878 coupling Effects 0.000 claims abstract description 50
- 238000010168 coupling process Methods 0.000 claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 claims abstract description 50
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000003321 amplification Effects 0.000 claims description 29
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 29
- 238000002955 isolation Methods 0.000 claims description 26
- 230000003750 conditioning effect Effects 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 11
- 239000000835 fiber Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of use for electric locomotive electronic mutual inductor and using method thereof, including bleeder circuit, overvoltage crowbar, high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit, described bleeder circuit device outfan connects the input of overvoltage crowbar and high-pressure side Phototube Coupling processing unit circuit, described overvoltage crowbar ground connection, the outfan of described high-pressure side Phototube Coupling processing unit circuit connects described low pressure amplifying circuit, described bleeder circuit is from high-voltage contact net power taking, directly high pressure is divided into low-voltage ac signal, through high-pressure side, Phototube Coupling processing unit circuit carries out Phototube Coupling, signals revivification becomes low-voltage ac signal after processing equally, for rear class low pressure amplifying circuit, low pressure amplifying circuit is for the shaping to Phototube Coupling signal, the forward of linear optical coupling is exported simultaneously and feed back, the conversion accuracy making linear optical coupling reaches designing requirement。The present invention has that volume is little, lightweight, low in energy consumption, good stability, security performance advantages of higher。
Description
Technical field
The present invention relates to a kind of device measuring line voltage, it relates in particular to a kind of use for electric locomotive outdoor electronic formula voltage transformer and the purposes in electric locomotive thereof。
Background technology
It is known that; electric locomotive obtains the single phase industrial frequence alternating current of 25kV, 50Hz from contact net; contact net high pressure delivers to the tractive transformer of intra-locomotive through pantograph, main circuit breaker, high-tension current inductor, and the high voltage potential transformer on locomotive mainly realizes contact net voltage measurement, power calculation and defencive function。High voltage potential transformer (is usually 25kV/100V or 25kV/150V) and is parallel on roof 25kV high voltage bus; 25kV is down to 100V(or 150V) it is supplied to locomotive network pressure gauge and shows and the voltage source of locomotive kilowatt-hour meter; then through transformer pressure-reducing (100/5 or 150/5) output AC 5V, carry out locomotive protection for locomotive microcomputer cabinet。
At present, measuring of former limit line voltage is mainly used traditional electromagnetic potential transformer by electric locomotive。By the restriction of transformer mechanism, traditional voltage transformer has to be affected greatly by net pressure higher hamonic wave, be susceptible to ferromagnetic resonance or iron core magnetic satisfies, and may result in iron core and generate heat and exceed design load；Cross in the process of non-Electric region at locomotive and be also possible to cause overvoltage, its output can not short circuit etc. shortcoming。Generally utilization especially as Harmony electric locomotive, railway power supply net is caused to produce the harmonic component of a large amount of different frequencies, make traditional electromagnetic potential transformer internal short-circuit at present, be burnt, burst, the faults such as phenomenon on fire are even caused again and again to occur, it has had a strong impact on the safe operation of electric locomotive, electromagnetic potential transformer outfan traditional on the other hand is directly connected with car-mounted device, when winding charge of transformer or insulation breakdown, high voltage jeopardizes the safety of personnel and instrumentation possibly into secondary side。In order to ensure the insulation effect of voltage transformer, traditional transformer volume is big, Heavy Weight, installs inconvenience, and self consumes energy, consumptive material is higher, unfavorable environmental protection。
Electronic mutual inductor is currently applied more in power system, and it has the advantage that excellent insulating property, low price compared with traditional electromagnetic potential transformer；Electromagnetism interference performance is good, and step-down side short circuit is without overheated danger；The linearity is good, without saturated phenomenon；Volume is little, lightweight, save space；Power system suitable in up-to-date digitized, Microcomputer。Why electronic type voltage transformer is not applied in electric locomotive, main reason is that:
1, the corresponding international or national standard of civilian electronic mutual inductor is just issued, and the not corresponding international or country of the electronic mutual inductor on railway electric locomotive or industry standard, it is impossible to identify that the various parameter values of electronic mutual inductor and accuracy meet the world or national measurement requirement。
2, former electronic type voltage transformer; especially the technology such as high-voltage signal sampling and high_voltage isolation processing of circuit (including its dividing potential drop sample material, overvoltage protecting device) is also at exploratory experiment stage in security reliability in civilian power system with regard to it; it directly affects subsequent conditioning circuit or even the safe operation of whole power transmission network; and the safe operation of electric locomotive is the guarantee of passenger's person and property safety in global rail transportation system, it is left out using jejune technology for electric locomotive general principle of design。
During the electronic type voltage transformer 3, in the past used on national grid, the practical situation considering inapplicable power network to the harmonic component of electrical network, by the energy back of its generating to electrical network when the harmonic wave of railway contact line is essentially from alternating current electric locomotive electric braking, thus reaching energy-conservation purpose。But what adopt due to the brake power generating of locomotive is AC-DC-AC inversion transformation technique, its main harmonic component is mainly reflected in middle low-order harmonic, mainly considering that with electrical network higher hamonic wave is different, the electronic type voltage transformer therefore commonly used on current national grid can not use the voltage measurement of railway contact electrical network。
4, measuring of former limit line voltage is adopted traditional electromagnetic potential transformer by the electric locomotive of conventional China, and in rail transportation system, during a large amount of use friendship orthogonal electric locomotive, its fault rate is less high。
It is therefore desirable to prior art is improved, create railway systems electronic mutual inductor standard and country and world industry standard with the standard that the world or country issue accordingly of existing electronic mutual inductor for benchmark simultaneously。
Summary of the invention
For the electromagnetic potential transformer applied on current power locomotive, reliability is low, capacity of resisting disturbance is weak, Frequent Troubles, security performance are low, cannot meet the technological deficiency of intelligent demand, the present invention provides that a kind of simple in construction, reliability are high, capacity of resisting disturbance strong, the electric locomotive electronic mutual inductor of small in volume, and its using method in electric locomotive is disclosed, solve problems of the prior art。
This invention address that technical problem the technical scheme is that
A kind of use for electric locomotive electronic mutual inductor, including:
Bleeder circuit, described bleeder circuit is electric resistance partial pressure type structure, divider resistance choose select be resistant in low-order harmonic impact resistance, the high voltage of electrical network is carried out dividing potential drop sampling by bleeder circuit；
Overvoltage crowbar, input connects the outfan of described potentiometer, exports ground connection, provides overvoltage protection for whole transformer；
High-pressure side Phototube Coupling processing unit circuit; input connects described bleeder circuit; output connects low pressure amplifier circuit; high-pressure side Phototube Coupling processing unit circuit passes through electrical/optical bonder dividing potential drop sampled signal; with light for medium; transmitting telecommunication number is converted to optical signal, again optical signal is converted to the signal of telecommunication and transfers in subsequent conditioning circuit, subsequent conditioning circuit is reached insulation blocking effect；
Low pressure amplifying circuit, input connects described high-pressure side Phototube Coupling processing unit circuit, output connects locomotive equipment, low pressure amplifying circuit is that the low-voltage ac signal that high-pressure side Phototube Coupling processing unit circuit is sent is nursed one's health, and output voltage is directly for locomotive microcomputer control cabinet and other equipment。
Further, also include power amplification circuit, the input of described power amplification circuit connects described low pressure amplifying circuit, output connects locomotive equipment, power amplification circuit carries out multistage AC power amplification low-voltage ac signal, and carry out boosting conditioning, transfer out the AC analogue signal that voltage level is bigger。
Further, when the output of described power amplification circuit is to electric locomotive, being carry out isolation feedback output by transformator, the fan-out of transformator feeds back to the drive end of transformator。
Further, described electronic type voltage transformer also includes digital signal processing circuit, digital signal processing circuit input connects low pressure amplifying circuit, output connects locomotive equipment, the low-voltage ac signal that digital signal processing circuit exports low pressure amplifying circuit is converted to digital signal and exports by RS485 interface requirement, for locomotive。
Described digital signal processing circuit includes A/D converter, controller and RS485 network interface, three is sequentially connected with, net pressure signal after signal condition is the AC signal of 0-5V, to pass through network transmission network pressure signal, signal must be pressed to convert digital signal to the net of simulation, adopt high-precision A/D converter, the AC signal of simulation is converted to the virtual value network signal of digital quantity；Controller is for controlling the communication between electronic type voltage transformer and electric locomotive control system, and RS485 network interface is used for exporting network signal。
Further, described high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit, power amplification circuit and digital signal processing circuit are powered by independent insulating power supply, described independent insulating power supply all from locomotive DC 110V power supply power taking and be respectively provided with redundancy output。
A kind of using method of electric locomotive electronic mutual inductor, including:
(1) this electronic type voltage transformer is applied in existing without in the electric locomotive of network control system, using low pressure amplifying circuit and power amplification circuit as the output of electronic type voltage transformer, its external interface is identical with the external interface of existing electromagnetic potential transformer, after high-voltage contact net power taking, exported, by signal amplification module, the AC analogue signal meeting electric locomotive technical standard by potentiometer, replace original electromagnetic potential transformer；
(2) this electronic type voltage transformer is applied in new network control electric locomotive, using digital signal processing circuit as the output of electronic type voltage transformer, control the control network of electric locomotive as external interface output digit signals to new network by RS485 interface, the network signal network interface to new network control electric locomotive is exported from after high-voltage contact net power taking by network signal modular converter by potentiometer, replacing original electromagnetic potential transformer, car load is controlled by the control network being controlled electric locomotive by new network。
Further, every electric locomotive is equipped with standby electronic type voltage transformer, this standby electronic type voltage transformer is in parallel with primary electron formula voltage transformer by permutator, when primary electron formula voltage transformer breaks down, standby electronic type voltage transformer is made to devote oneself to work by permutator so that electric locomotive can be properly functioning。
It is an advantage of the current invention that:
(1) electronic type voltage transformer of the present invention divider resistance choose select be resistant in low-order harmonic impact resistance, the impact to locomotive high-voltage mutual inductor of the middle low-order harmonic of reduction railway contact line, use the spread fiber that high-pressure side Phototube Coupling processing unit circuitry instead is original, the electrical-optical-electrical process of spread fiber needs longer connection line of optic fibre, structure is complicated, volume is bigger, and use high-pressure side Phototube Coupling processing unit circuit, a device can be achieved with the conversion of electrical-optical-electrical, stepping simplifies structure, isolation Level is also high than spread fiber, this electronic type voltage transformer is made to have less volume, lighter weight and higher stability and anti-interference；
(2) electronic type voltage transformer rear end of the present invention output adopts analogue and digital circuit mixed design, the analog signal output of different electric pressure both can be provided, also digital signal can be provided to export, the requirement of conventional electric power locomotive can be met, new network can be met again and control the demand of electric locomotive, have that use scope is wide, the advantage of highly versatile；
(3) described power amplification circuit adopts transformer isolation output, and by the drive end of the output feedack of transformator to transformator, it is possible to avoid the output transformer damage caused due to transformator output short-circuit；And owing to analog signal output adopting degenerative control mode, it is effectively increased the precision controlling of the transformator way of output, carrying load ability。
(4) using method of electronic type voltage transformer of the present invention, retains the connection excuse of conventional electromagnetic transformer, only need to change transformer itself, and operation is simple, changes difficulty low, is conducive to using on a large scale in conventional locomotive；
(5) using method of electronic type voltage transformer of the present invention, the basis of original electronic type voltage transformer increases standby transformer, permutator can be passed through when former mulual inductor malfunction and enable standby transformer in time, considerably increase security performance during train operation, ensure whole service process。
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of electronic type voltage transformer of the present invention；
Fig. 2 is the electrical block diagram of electronic type voltage transformer of the present invention assembling power amplification circuit；
Fig. 3 is the electrical block diagram of electronic type voltage transformer of the present invention assembling power amplification circuit and digital signal processing circuit；
Fig. 4 is the electrical block diagram of electronic type voltage transformer embodiment 1 of the present invention；
Fig. 5 is the electrical block diagram of electronic type voltage transformer embodiment 2 of the present invention；
Wherein Fig. 4, Fig. 5 only draw the structure of its in running order circuit unit respectively according to its purposes；
In figure, 1-resistor voltage divider circuit, 2-overvoltage crowbar, 3-high-pressure side Phototube Coupling processing unit circuit; 4-low pressure amplifying circuit, 5-power amplification circuit, 6-digital signal processing circuit, 7-A/D transducer; 8-controller, 9-RS485 network interface, 10,11-permutator。
Detailed description of the invention
Technical scheme is expanded on further below in conjunction with the drawings and specific embodiments。
As it is shown in figure 1, a kind of use for electric locomotive electronic mutual inductor, including
Bleeder circuit 1, described bleeder circuit is electric resistance partial pressure type structure, divider resistance choose select be resistant in low-order harmonic impact resistance, the high voltage of electrical network is carried out dividing potential drop sampling by bleeder circuit；
Overvoltage crowbar 2, input connects the outfan of described potentiometer, exports ground connection, provides overvoltage protection for whole transformer；
High-pressure side Phototube Coupling processing unit circuit 3; input connects described bleeder circuit; output connects low pressure amplifier circuit; high-pressure side Phototube Coupling processing unit circuit passes through electrical/optical bonder dividing potential drop sampled signal; with light for medium; transmitting telecommunication number is converted to optical signal, again optical signal is converted to the signal of telecommunication and transfers in subsequent conditioning circuit, subsequent conditioning circuit is reached insulation blocking effect；
Low pressure amplifying circuit 4, input connects described high-pressure side Phototube Coupling processing unit circuit, output connects locomotive equipment, low pressure amplifying circuit is that the low-voltage ac signal that high-pressure side Phototube Coupling processing unit circuit is sent is nursed one's health, and output voltage is directly for locomotive microcomputer control cabinet and other equipment。
Described resistor voltage divider circuit 1 outfan connects the input of overvoltage crowbar 2 and high-pressure side Phototube Coupling processing unit circuit 3, described overvoltage crowbar 2 ground connection, the outfan of described high-pressure side Phototube Coupling processing unit circuit 3 connects described low pressure amplifying circuit 4, described resistor voltage divider circuit 1 is from 25kVAC high-voltage contact net power taking, directly 25kV high pressure is divided into 0-5V low-voltage ac signal, Phototube Coupling is carried out through high-pressure side Phototube Coupling processing unit circuit 3, signals revivification becomes 0-5V low-voltage ac signal after processing equally, for rear class low pressure amplifying circuit 4, low pressure amplifying circuit 4 is for carrying out shaping to Phototube Coupling signal, the forward of linear optical coupling is exported simultaneously and feed back, the conversion accuracy making linear optical coupling reaches designing requirement, with aviation plug output to locomotive equipment, such as locomotive microcomputer control cabinet or intelligent electric meter etc., can effectively bear locomotive vibration, sleet corrodes。Electronic type voltage transformer of the present invention divider resistance choose select be resistant in low-order harmonic impact resistance, the impact to locomotive high-voltage mutual inductor of the middle low-order harmonic of reduction railway contact line, use the spread fiber that high-pressure side Phototube Coupling processing unit circuitry instead is original, the electrical-optical-electrical process of spread fiber needs longer connection line of optic fibre, structure is complicated, volume is bigger, and use high-pressure side Phototube Coupling processing unit circuit, a device can be achieved with the conversion of electrical-optical-electrical, stepping simplifies structure, isolation Level is also high than spread fiber, this electronic type voltage transformer is made to have less volume, lighter weight and higher stability and anti-interference；
As shown in Figure 2, further embodiment as the present invention, this use for electric locomotive electronic mutual inductor also includes power amplification circuit 5, the input of described power amplification circuit 5 connects described low pressure amplifying circuit 4, output connects locomotive equipment, 5 low-voltage ac signals of power amplification circuit carry out multistage AC power amplification, and carry out boosting conditioning, transfer out the AC analogue signal that voltage level is bigger, such as 25kV/100V or 25kV/150V etc., it is directly connected to locomotive equipment (such as net pressure table input and the voltage source input of locomotive kilowatt-hour meter, also can connect locomotive microcomputer control cabinet such as special merit and mend transformer inputs or the pull-in control system etc. for alternating current electric locomotive)。
As the further embodiment of the present invention, when the output of described power amplification circuit is to electric locomotive, being carry out isolation feedback output by transformator, the fan-out of transformator feeds back to the drive end of transformator。
As shown in Figure 3, further embodiment as the present invention, described electronic type voltage transformer also includes digital signal processing circuit 6, digital signal processing circuit 6 input connects low pressure amplifying circuit 4, output connects locomotive equipment, the low-voltage ac signal of 6 low pressure amplifying circuit outputs of digital signal processing circuit is converted to digital signal and exports new network control locomotive train intelligent network CMT input by RS485 interface requirement, for locomotive。Electronic type voltage transformer of the present invention, compared with traditional electronic type voltage transformer, adds network output function, directly exports network signal, meets new network and controls the demand of electric locomotive。
As shown in Figure 3, further embodiment as the present invention, described digital signal processing circuit 6 includes A/D converter 7, controller 8 and RS485 network interface 9, three is sequentially connected with, net pressure signal after signal condition is the AC signal of 0-5V, will pass through network transmission network pressure signal, it is necessary to press signal to convert digital signal on the net of simulation, adopt high-precision A/D converter 7, the AC signal of simulation is converted to the virtual value network signal of digital quantity；Controller 8 is for controlling the communication between electronic type voltage transformer and electric locomotive control system, and RS485 network interface 10 is used for exporting network signal。
Further embodiment as the present invention, described high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit, power amplification circuit and digital signal processing circuit are powered by independent insulating power supply, described independent insulating power supply all from locomotive DC 110V power supply power taking and be respectively provided with redundancy output。
As the using method of a kind of electric locomotive electronic mutual inductor of the present invention, there is different usings method for different types of locomotive (mainly tradition non-network controls electric locomotive and new network control electric locomotive), including:
(1) this electronic type voltage transformer is applied in existing without in the electric locomotive of network control system, using low pressure amplifying circuit and power amplification circuit as the output of electronic type voltage transformer, its external interface is identical with the external interface of existing electromagnetic potential transformer, after high-voltage contact net power taking, exported, by signal amplification module, the AC analogue signal meeting electric locomotive technical standard by potentiometer, replace original electromagnetic potential transformer；
(2) this electronic type voltage transformer is applied in new network control electric locomotive, using digital signal processing circuit as the output of electronic type voltage transformer, control the control network of electric locomotive as external interface output digit signals to new network by RS485 interface, the network signal network interface to new network control electric locomotive is exported from after high-voltage contact net power taking by network signal modular converter by potentiometer, replacing original electromagnetic potential transformer, car load is controlled by the control network being controlled electric locomotive by new network。
Further embodiment as the using method of a kind of electric locomotive electronic mutual inductor of the present invention, every electric locomotive is equipped with standby electronic type voltage transformer, this standby electronic type voltage transformer is in parallel with primary electron formula voltage transformer by permutator, when primary electron formula voltage transformer breaks down, standby electronic type voltage transformer is made to devote oneself to work by permutator so that electric locomotive can be properly functioning。
Embodiment 1
The product of embodiment 1 is to design for replacement non-network controls the High Voltage Electromagnetic Instrument Transformers in electric locomotive, its structure is as shown in Figure 4, take the high Redundancy Design of two-way, in figure, A is primary electron formula voltage transformer, B is standby electronic type voltage transformer, switched over by permutator 10, the electromagnetic type high-voltage mutual inductor that its external interface is now installed with locomotive is identical, it is beneficial to the replacement original electromagnetic type high-voltage mutual inductor of electric locomotive, reduces the difficulty changing electronic high-voltage transformer of the present invention。Each circuit module specific works is as follows:
Resistor voltage divider circuit: voltage grading resistor is mainly used in the net pressure of locomotive input is carried out blood pressure lowering and sampling, the net pressure signal in input locomotive is made to be converted to the low-voltage signal of 0-5VAC by 25kVAC, overvoltage absorbing circuit is increased as overvoltage protection at low-voltage output, prevent net side instantaneous pressure string such as low tension loop, thus protecting the circuit of low-pressure end, the signal output of low-pressure end 0-5VAC adopts the aviation plug of IP67 degree of protection, can effectively bear locomotive vibration, sleet corrodes, 0-5VAC signal output distance 5 meters, meet net pressure signal and introduce the required distance of intra-locomotive, potentiometer precision reaches leads 0.2 grade, other technologies index meets GB/T20840.7-2006 and bar 3, bar 4 standard；
High-pressure side Phototube Coupling processing unit circuit: from the net pressure signal of the 0-5VAC of voltage grading resistor output, first pass through the isolation of linear photoconductor, isolation voltage grade is 2500VAC, 1min, make the high_voltage isolation of subsequent conditioning circuit and other circuit of locomotive and electrical network, linear photoelectric isolation front end adopts isolation voltage grade to be the power supply changeover device of 2500VAC, 1min, linear photoelectric isolation makes the net pressure signal of 0-5VAC become the isolation signals of 0-5VAC after Phototube Coupling is changed equally, for the signal condition of rear class, linear photoelectric isolation conversion accuracy is 0.2 grade；
Low pressure amplifying circuit: signal conditioning circuit is mainly used in the shaping to Phototube Coupling signal, exports the forward of linear optical coupling simultaneously and feeds back, make the conversion accuracy of linear optical coupling reach designing requirement；
Signal amplification module: it is press signal to convert the AC signal of 0-100V or 0-150V to the AC network of 0-5V that signal amplifies, meet locomotive control and requirement that net pressure table shows, the output capacity of this circuit is 30VA, identical with the electromagnetic type high-voltage mutual inductor that tradition non-network controls electric locomotive, electronic type voltage transformer changed by locomotive is without locomotive circuit is transformed；
Insulating power supply: described high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit and signal amplification module are powered by independent insulating power supply, described independent insulating power supply is respectively provided with redundancy output, and meeting locomotive vibration and temperature requirement, they are respectively as follows:
1, the DC110V powered for the rear end of low pressure amplifying circuit and high-pressure side Phototube Coupling processing unit circuit becomes the insulating power supply of DC ± 15V, and output is 15W, and the conversion power of this insulating power supply has the output redundancy of 50%；
2, for the pressure insulating power supply of the height of photoelectric isolation module front-end power, the isolation voltage of this power supply is AC1500V exchange, and output is 2W；
3, the DC110V powered for signal amplification module becomes the insulating power supply of DC ± 200V, and output is 50W, and the conversion power of this power supply has the output redundancy of 40%。
Embodiment 2
The product of embodiment 2 designs for network control electric locomotive uses, according to different communication of locomotive interface requirements, adopt corresponding communication protocol (such as MVB train multi-functional communications agreement) etc. to carry out software programming to realize digital signal and control system communication with locomotive network, as shown in Figure 5, this electronic type voltage transformer takes the high Redundancy Design of two-way, in figure, C is primary electron formula voltage transformer, D is standby electronic type voltage transformer, switched over by permutator 11, adopt high pressure divider resistance, Phototube Coupling and signal condition, signal A/D is changed, network communication interface part realizes circuit function。Each circuit module specific works is as follows:
Resistor voltage divider circuit: voltage grading resistor is mainly used in the net pressure of locomotive input is carried out blood pressure lowering and sampling, the net pressure signal in input locomotive is made to be converted to the low-voltage signal of 0-5VAC by 25kVAC, overvoltage absorbing circuit is increased as overvoltage protection at low-voltage output, prevent net side instantaneous pressure string such as low tension loop, thus protecting the circuit of low-pressure end, the signal output of low-pressure end 0-5VAC adopts the aviation plug of IP67 degree of protection, can effectively bear locomotive vibration, sleet corrodes, 0-5VAC signal output distance 5 meters, meet net pressure signal and introduce the required distance of intra-locomotive, potentiometer precision reaches leads 0.2 grade, other technologies index meets GB/T20840.7-2006 and bar 3, bar 4 standard；
High-pressure side Phototube Coupling processing unit circuit: from the net pressure signal of the 0-5VAC of voltage grading resistor output, first pass through the isolation of linear photoconductor, isolation voltage grade is 2500VAC, 1min, make the high_voltage isolation of subsequent conditioning circuit and other circuit of locomotive and electrical network, linear photoelectric isolation front end adopts isolation voltage grade to be the power supply changeover device of 2500VAC, 1min, linear photoelectric isolation makes the net pressure signal of 0-4VAC become the isolation signals of 0-4VAC after Phototube Coupling is changed equally, for the signal condition of rear class, linear photoelectric isolation conversion accuracy is 0.2 grade；
Low pressure amplifying circuit: signal conditioning circuit is mainly used in the shaping to Phototube Coupling signal, exports the forward of linear optical coupling simultaneously and feeds back, make the conversion accuracy of linear optical coupling reach designing requirement；
A/D change-over circuit device: the AC signal that the net pressure signal after signal condition is 0-5V turns, to pass through network transmission network pressure signal, signal must be pressed to convert digital signal to the net of simulation, adopt high-precision A/D change-over circuit, the AC signal of simulation is converted to the virtual value signal of digital quantity；
Controller: this controller is to adopt single-chip microcomputer, digital signal after being changed by A/D reads from A/D conversion chip, after accepting the reading instruction of locomotive network controller, press digital quantity signal to send locomotive control to by network on the net measured, for locomotive control simultaneously；
RS485 communication interface: for transmitting digital signal and isolating the impact of electric locomotive control system, digital signal exports new network and controls locomotive train intelligent network CMT input, and in this example, locomotive adopts MVB communication protocol to be controlled,；
Insulating power supply: described high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit and network signal modular converter are powered by independent insulating power supply, described independent insulating power supply is respectively provided with redundancy output, and meeting locomotive vibration and temperature requirement, they are respectively as follows:
1, the DC110V powered for low pressure amplifying circuit and A/D conversion, controller and communication interface becomes the insulating power supply of DC5V, DC ± 15V, and output is 30W, and the conversion power of this insulating power supply has the output redundancy of 50%。
2, the pressure insulating power supply of height powered for high-pressure side Phototube Coupling processing unit circuit front-end, the isolation voltage of this power supply is AC1500V exchange, and output is 2W。
3, the DC5V powered for communication interface terminal circuit becomes the insulating power supply of DC5V, and output is 2W, and the conversion power of this insulating power supply has the output redundancy of 40%。
Above-described embodiment and embodiment are only the preferred embodiments of the present invention and embodiment; only for the present invention is further elaborated; protection scope of the present invention is not imposed any restrictions; layout novelty that those of ordinary skill in the art make under enlightening without departing from essence of the present invention and technology and creationary deformation and retouching; being regarded as within protection scope of the present invention, protection scope of the present invention is specifically depending on its claims。
Claims (3)
1. a use for electric locomotive electronic mutual inductor, it is characterised in that including:
Bleeder circuit, described bleeder circuit is electric resistance partial pressure type structure, divider resistance choose select be resistant in low-order harmonic impact resistance, the high voltage of electrical network is carried out dividing potential drop sampling by bleeder circuit；
Overvoltage crowbar, input connects the outfan of described potentiometer, exports ground connection, provides overvoltage protection for whole transformer；
High-pressure side Phototube Coupling processing unit circuit; input connects described bleeder circuit; output connects low pressure amplifier circuit; high-pressure side Phototube Coupling processing unit circuit is changed to optical signal dividing potential drop sampled signal by electrical/optical bonder; again optical signal is converted to the signal of telecommunication and transfers in subsequent conditioning circuit, subsequent conditioning circuit is reached insulation blocking effect；
Low pressure amplifying circuit, input connects described high-pressure side Phototube Coupling processing unit circuit；
Power amplification circuit, the input of described power amplification circuit connects described low pressure amplifying circuit, output connects locomotive equipment, the low-voltage ac signal that described power amplification circuit and low pressure amplifying circuit export high-pressure side Phototube Coupling processing unit circuit carries out multistage AC power amplification, and carry out boosting conditioning, transfer out the AC analogue signal that voltage level is bigger；
Wherein, when the output of described power amplification circuit is to electric locomotive, being carry out isolation feedback output by transformator, the outfan of transformator feeds back to the drive end of transformator。
2. a kind of use for electric locomotive electronic mutual inductor according to claim 1, it is characterized in that, further, described electronic type voltage transformer also includes digital signal processing circuit, digital signal processing circuit input connects low pressure amplifying circuit, output connects locomotive equipment, and the low-voltage ac signal that digital signal processing circuit exports low pressure amplifying circuit is converted to digital signal and exports by RS485 interface requirement, for locomotive。
3. a kind of use for electric locomotive electronic mutual inductor according to claim 2, it is characterized in that, described high-pressure side Phototube Coupling processing unit circuit, low pressure amplifying circuit, power amplification circuit and digital signal processing circuit are powered by independent insulating power supply, described independent insulating power supply all from locomotive DC 110V power supply power taking and be respectively provided with redundancy output。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014819.9A CN103715909B (en) | 2013-01-16 | 2013-01-16 | A kind of electric locomotive electronic mutual inductor and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014819.9A CN103715909B (en) | 2013-01-16 | 2013-01-16 | A kind of electric locomotive electronic mutual inductor and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103715909A CN103715909A (en) | 2014-04-09 |
| CN103715909B true CN103715909B (en) | 2016-06-22 |
Family
ID=50408595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310014819.9A Active CN103715909B (en) | 2013-01-16 | 2013-01-16 | A kind of electric locomotive electronic mutual inductor and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103715909B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014215289A1 (en) * | 2014-08-04 | 2016-02-04 | Robert Bosch Gmbh | Energy supply system for a motor vehicle with electric or hybrid drive |
| CN105759675A (en) * | 2014-12-19 | 2016-07-13 | 中车大连电力牵引研发中心有限公司 | Analog quantity input board card and analog quantity acquisition method |
| CN104890680B (en) * | 2015-06-17 | 2017-06-06 | 株洲中车轨道交通装备有限公司 | A kind of fast rail vehicle control system net changing method of administrative region of a city and control system |
| CN105510680B (en) * | 2016-01-27 | 2019-01-11 | 中车株洲电力机车有限公司 | A kind of alternating current-direct current network pressure detection device |
| CN105629190B (en) * | 2016-01-27 | 2019-01-15 | 中车株洲电力机车有限公司 | A kind of alternating current-direct current network pressure detection circuit |
| CN107064605A (en) * | 2017-06-08 | 2017-08-18 | 广东志高暖通设备股份有限公司 | A kind of voltage detecting circuit and air-conditioning system with buffer action |
| CN112751312A (en) * | 2021-01-06 | 2021-05-04 | 北京博瑞莱智能科技集团有限公司 | Novel box transformer substation and power distribution protection system thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2374650A1 (en) * | 2010-04-09 | 2011-10-12 | Tem Elettronica S.r.l. | Device for measuring electric current and voltage on board of electric traction railroad vehicles |
-
2013
- 2013-01-16 CN CN201310014819.9A patent/CN103715909B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2374650A1 (en) * | 2010-04-09 | 2011-10-12 | Tem Elettronica S.r.l. | Device for measuring electric current and voltage on board of electric traction railroad vehicles |
Non-Patent Citations (3)
| Title |
|---|
| 10Kv/35kV电子式电压/电流互感器研究;彭丽;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20050615(第2期);第C042-61页 * |
| 基于TA的电子式电压互感器;王海浪等;《仪表技术与传感器》;20100930(第9期);第8页左栏倒数第2-3段，图1 * |
| 基于电阻分压的10kV电子式电压互感器的研究;叶磊;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20090515(第5期);第C042-108页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103715909A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103715909B (en) | A kind of electric locomotive electronic mutual inductor and using method thereof | |
| CN110611323B (en) | Electrified railway in-phase power supply comprehensive compensation device and comprehensive compensation method thereof | |
| CN110504697A (en) | A kind of electrified railway in-phase power supply comprehensive compensating device and its comprehensive compensation method | |
| CN110504698B (en) | Electrified railway in-phase power supply comprehensive compensation device and comprehensive compensation method thereof | |
| CN102299646A (en) | Alternating-current inductance-free and energy-saving high-voltage direct-current traction power supply current transformation device and control method thereof | |
| CN205787052U (en) | It is applicable to the track traffic current transformer test platform of multi-standard | |
| CN107247185A (en) | Tractive power supply system harmonic impedance measurement device and its test method | |
| CN103217602B (en) | Testing device and testing method of train power supply system | |
| CN207518265U (en) | Urban track traffic thyristor-type traction rectifier and feedback converter system | |
| CN210224973U (en) | Integrated compensation device for in-phase power supply of electrified railway | |
| WO2012083649A1 (en) | Ground power supply system for bullet trains | |
| CN109217330A (en) | A kind of electric railway cophase supply transformer substation system | |
| CN209676130U (en) | A kind of electric power electric transformer | |
| CN202617114U (en) | Low-voltage power line carrier signal coupling device | |
| CN107069649A (en) | A kind of electrical load safety operation control system | |
| CN205788002U (en) | A kind of power supply supply lines voltage-drop compensation circuit | |
| CN202230858U (en) | PCB (printed circuit board) type Rogowski coil current transformer | |
| CN208134141U (en) | A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction | |
| CN102680758A (en) | Digitalized optical fiber voltage transformer | |
| CN202649276U (en) | Digitalized fiber voltage transformer | |
| CN206947961U (en) | A kind of PWM rectifier direct current supply pilot system based on multiplex | |
| CN203251095U (en) | A negative sequence compensation system in electrified railways | |
| CN109256785A (en) | Cophase supply comprehensive compensating device and its method based on single-phase transformation and YNd compensation | |
| CN107658875A (en) | Urban track traffic thyristor-type traction rectifier and feedback converter system | |
| CN209590123U (en) | Metro Stray Current Monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Guangqun Inventor after: Qiu Zirong Inventor after: Yuan Zanjiang Inventor after: Zou Dajiang Inventor before: Zhang Guangqun Inventor before: Xu Zongxiang Inventor before: Suo Jianguo Inventor before: Qiu Zirong Inventor before: Yuan Zanjiang Inventor before: Zou Dajiang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG GUANGQUN XU ZONGXIANG LUO JIANGUO QIU ZIRONG YUAN ZANJIANG ZOU DAJIANG TO: ZHANG GUANGQUN QIU ZIRONG YUAN ZANJIANG ZOU DAJIANG |
|
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |