AC SIMOTRAPS Software

Introduction to AC SIMOTRAPS

Electrodynamic train simulation software called AC SIMOTRAPS is a powerful AC train simulation software. This software can calculate and present all the parameters required in the design of traction substations, autotransformer substations, and overhead networks in any AC electric railway line.

It is possible to simulate and design simple 25kV AC and 2x25KV AC autotransformer electric railway power supply systems using this software.

Software Input Data

AC SIMOTRAPS software needs some parameters and input information to perform the simulation. These include the plan and profile of the train route, rolling stock specifications, operation parameters, and finally the electrical network specifications.

Route plan and profile parameters include slope, slope radius, and maximum allowable speed along the route, as well as the location of passenger stations.

rolling stock specifications include the permitted voltage range of the vehicle, auxiliary power consumption, power regenerative capability, tractive effort and braking effort, train movement resistance characteristics, train weight, passenger weight, train acceleration change rate, and maximum train traction and braking acceleration and also rotating mass factor rate. This software takes the information of an unlimited number of trains from the operator before the simulation run to use them according to the given timetable in the simulation.

Due to the nature of electric railways and the variety of trains that can travel on the line, the operating parameters in AC SIMOTRAPS software are more complex than the same input data in DC SIMOTRAPS.

An unbounded number of stop times at different stations can also be defined. In the schedule table, for each train departure, the departure time, type of fleet, type of stop of that train at each station, and even the station of origin and destination of the train is definable. In this order, the simulation results will be as close as possible to the real operation situation, with different passenger and freight trains and with different lengths and weights.

The specifications of the electrical network include the location and specifications of traction substations, location and specifications of autotransformer substations, fixed loads connected to the power line, and so on. On the other hand, to calculate the voltage drop across the line, it uses the conductor resistance of the power supply to the train along the line as well as the electrical resistance of the overhead catenary system per unit length and finally the resistance of the moving rail to the ground.

Software outputs

After importing the input information, it is possible to run the software. The simulation calculations are based on the provided schedule and observing the stop times in each station. It displays and stores all the parameters online. These parameters include:

    • The voltage of all network points, Including trains and traction posts;
    • Currents associated with traction substation feeders.

Finally, the software presents a report in which shows the following items:

    • average values ​​and root mean squares of power and current of traction substations
    • mean and root mean squares of current and maximum and minimum values ​​for each output feeder of traction substations.

It shows the mentioned items in the form of graphic diagrams as well as numerical tables. In the report provided by the software, the train and rolling rail voltage profiles, as well as the train speed profile and its maximum allowed speed are displayed separately for each direction of train movement. Also, the power consumption profile of trains and their acceleration can be displayed and presented.

SIMOTRAPS provides all of the above simulations in case of failure of each traction substation or auto-transformer post.

So, this software can calculate and present all the parameters required to design an AC transport system.

Available services

We provide electrodynamic simulation services for the following items:

  • Train movement calculations
  • Size calculations and location of traction posts

our services are available in all stages of project engineering.

These steps include conceptual and basic design stages.

We also offer calculation and study services in case of any required change in the routine operation of the line.

Also, you can purchase AC SIMOTRAPS Software at a reasonable price.

it is affordable in case you want to use it in more projects.

You can send us your request through our contact page for more information.