Extended Transient-Midterm Stability Program: Version 3.0. Volume 1, Executive summary: Final report

This report details the techniques employed in EPRI`s Extended Transient Midterm Stability Program (ETMSP) version 3.0. The work on this program commenced in 1988, and was completed in 1992. The program is radically different from the original version of ETMSP, version 1.0. The code is completely new, based on Ontario Hydro`s SIMU rather than ETMSP version 1.0. ETMSP has many advanced features, both in terms of modelling and solution capability and in user friendliness. It is fast and economical in computing facilities: it is up to 16 times faster than ETMSP version 1.0, and its system size limit is 6 times greater with only twice the computer storage requirement. ETMSP version 3.0 has both explicit and implicit differential equation solution methods. It models. Its model complement includes: Detailed generators: Excitation systems, Prime Mover/Governor systems; Two terminal and multi-terminal HVDC links; Dynamic and static loads; Under load tap changers; Flexible ac transmission systems (FACTS); and Relays. User defined models are available for generator controls, FACTS and HVDC controls. Input of both power flow and dynamic data can be in a variety of commonly used formats which are compatible with other EPRI programs which form the Power System Analysis Package (PSAPAC).