The technical level of main
generator excitment automatic control system determines in many
respects the technical level of locomotive electrical equipment
and of locomotive itself. The quality of locomotive work
depends on this system working quality,
which, in its oder, depends on this system quality adjusting. The
results of locomotive condition monitorig show, that this last
quality very often would may be more better. The system troubles
shooting is also sometimes cause a big problems in operation,
which leads to long stoppage of locomotives out of work. The main
reason of such problems is insufficient qualification of
technicians or even engineers of depot rheostat locomotive
testing stations. The main source of this qualification is
practical experience. Today the mustering of such experience is
possible only by working with real workable locomotives. Up to
engineers will muster such experience, the operational workers
and railroad customers must reap the fruits of their creative
searches. The different way of excitment systems adjusting
experience mustering is possible by the using of special training
programs, which were developed at Locomotive Department
of Saint
Petersburg State University for Means of Communication.
The program main screen is an image of main generator (alternator
for AC/DC locomotive type) excitment automatic system scheme. It
is close to its album variant with exception of the wires numbers
and resistors markers absence, and the measuring instruments in
the different scheme circuits presence. After turning on the
needed apparatuses and switching the throttle lever on 1-st
position (by clicking on apparatuses images and pressing the
throttle lever imitator buttons on program control panel) the
scheme condition changes from idle to working and the altenator
and traction motors images colour change from black to red. For
calculating scheme circuits currents and voltages values you must
press "Calculation" button on program control panel.
After waiting for some seconds (or tens of seconds - depending on
your computer's power) you may see, that measuring instruments
readings have changed. Their combination allow you to know all
about scheme condition in this mode. But what about other
throttle positions? Change the position, press "Calculation" button and analyse the answer to
this question. And what will happen, if the alternator loading
will change? After clicking on traction motors images (if they
are red) you may see a loading water rheostat panel with its
image and with two buttons ("Up"
and "Down"). Using this buttons, you may
lower or raise the rheostat plates and, accordingly, decrease or
increase its resistance. Press the "Calculation" button and try to understand the
scheme condition in a new mode. And what will happen, if this
adjusting resistor resistance will be change? Click on resistor
image and, by using "Ommeter" 's "Increase" and "Decrease" buttons on program control panel,
increase or decrease resistance of the selected resistor. Then
click on "Calculation" button againe and analyse scheme
condition. And how this changing influenced the alternator output
characteristic? Press the "Characteristic" button (on 15-th throttle position
only) and observe the calculation of ten characteristic's points.
You may also set the current changing range. After end of
calculations the characteristic will be draw on standart plane
table with low and high position borders. Is it wrong? Try to
adjust it by changing of different resistors resistance and
controlling you work results by characteristic calculation. And
what will happen, if this diode will be damaged with circuit
closing? And with circuit breaking? And if this resistor will be
breaking? And if the alternator voltage sencor circuit will be
breaking? And if ...? Press the "Damages setting" button on program control panel
and see the damages setting screen, where you may input near 60
defferent scheme damages. Then, after returning to normal mode,
you may analyse the work of damaged scheme. The program include
the internal illustrated interactive expert system with more then
60 instructions, which will help you to adjust the scheme or to
repaire it both in program and on locomotive.
These programs were developed with using the results of
locomotive energy stations mathematical modelling long work,
which was (and is) conducted at Locomotive
Department of Saint
Petersburg State University for Means of Communication. Their base models counts all locomotive
alternator excitment automatic system features (the real loading
characteristics of exciters, alternators, traction motors,
diodes, sencors etc) that allow to ensure the high models
equivalent and results authencity level.
All programs satisfactorily works on IBM-compatible
computers in following minimal configuration:
During some years this programs is sucsessfully used:
In the table you may see some screenshorts and
download the demo version of training program "TEP70 diesel
locomotive alternator excitment circuits". It is a Russian
passenger locomotive, which is produced now by Kolomna Locomotive
Building Plant and works on Russian, Belorussian and some other
countries railroads. Its excitment automatic control system very
close to such systems of TEM7(A),
TE109
(which was exported to Europe as V300) and 2TE116
diesel locs. Some full version's featurs are absent in demo
version (specifically, the working with damages, the resistors
adjusting and using the expert system are impossible). During
installation process program doesn't write anything to Windows
Registry, but will copy some files in System folder. These files
list is in README.TXT file. If you will not need these files
after deleting the program, you will may delete them by hands. If
you will launch program by the aid of shortcut, which is creared
on Desk Top by installator, please, don't forget to write program
folder path in the shortcut's "Program folder"
property.
The authors are interesting in your comments and suggestions
about the program. If you have them write us.
| Name of training program | Screenshorts | DownLoad |
| TEP70 diesel locomotive alternator excitment circuits |
Main
screen Rheostat plates position changing Alternator output characteristic calculation |
Demo version of training program:
"TEP70
diesel locomotive alternator excitment circuits" - 842 kb |
