The ATP
The ATP (Alternative Transients Program) is the world-wide mostly used universal program system for digital simulation of transient phenomena of electromagnetic as well as electromechanical nature in electrical power systems. Using ATP complex electrical power networks and control systems can be simulated. ATP has extensive modeling capabilities and additional important features besides the computation of transients. ATP was developed based on the EMTP program as the PC version.
The ATP has been used worldwide for decades in industry, research and higher education to calculate three-phase electrical power supply networks in particular. The ATP can be licensed and obtained through the European EMTP-ATP Users Group e.V. (EEUG).
"It covers all range of transients from lightning and switching studies to temporary overvoltages and sub-synchronous resonance. It has steady-state initialization, good support for multi-conductor analysis, powerful scripting in MODELS."
ATPDesigner - Network Calculation Program
Using ATPDesigner as a graphical user interface, even complex and extensive electrical power grids - including, for example, distributed generation plants and network protection devices - can be easily modelled and analysed. Knowledge of the ATP-specific set of rules is not required when using ATPDesigner. This makes it possible to make optimal use of ATP’s capabilities, particularly for the calculation of dynamic processes in electrical networks, with the help of the ATPDesigner graphical user interface.
ATPDesigner and ATP
ATPDesigner uses ATP as its computational engine in the background to calculate, analyse, display and document the steady-state grid conditions and the time-varying behaviour so called Transients of electrical power grids.
The figure shows a 110-kV-high-voltage power grid in ATPDesigner, with the results of a load flow calculation displayed in the power grid view. In addition, voltages and line currents can be displayed, for example, in a phasor diagram.
The European EMTP Users Group distribute and facilitate the usage of the software ATP-EMTP and its ecosystem. The electromagnetic transient program ATP-EMTP is developed by Dr. Scott Meyer and co. in USA. The program is a de facto standard in transient simulations and available free of charge to anyone not involved in "EMTP commerce". An approved license is required to download and use the solver ATP-EMTP.Additional Information about ATP and EEUG: www.atp-emtp.org, www.eeug.org, www.emtp.org