power system assistant (psa) 4.0 presentation november 2011 [email protected]
TRANSCRIPT
Power System Assistant (PSA) 4.0
PRESENTATION
November 2011
About Power System Assistant (PSA)Power Flow Calculation
•Base case load flow calculation•N-1 and N-X contingency analyses•NTC calculation•Calculation of PTDFs and OTDFs•Network Reduction-function based on power flow calculation
Short Circuits Calculation•Three phase•Single phase to ground•Two phase•Two phase to ground
Improvements of PSA 4.0 comparing to PSA 3.X
• LU factorization of Jakobian matrix is almost three times faster;
• Interface function Copy/Paste for data exchanging with MS Excel i Word tables;
• Export/Import function CIM XML RDF format;• Three-winding transformer model;• Turn off/on line on the one side;• Short circuit calculation function;• “backward looking” algorithm for generator reactive
power limits control.
PSA 4.0
Copy/Paste interface for data exchanging with MS Excel i Word tables
CIM XML RDF and UCTE formats export/import functions
Options for model saving in CIM XML and UCTE format
Four cases of line connections
Transformers – flexgrid
Transformers – Load Flow tab
Transformers – Short Circuits tab
Short Circuit Calculation
Short Circuit Calculation - Lines
Short Circuit Calculation and Results Options
Short Circuit Calculation Results in Output Window
Power Flow Calculation Parameters
Power Flow Calculation Results Tree
About PSA Implementation• PSA was completely made in C++ environment
and contains only one executive file, i.e. without DLL files from other programming languages .• It doesn’t require .Net Framework.• Standard Windows libraries and WinAPI are
used (without MFC, ATL, WTL...).• PSA 4.0 was made in VS2010, so that, SP2 for
WinXP has to be installed on workstation.
PSA References• It has been used by Serbian, Macedonian and
Montenegro Transmission System Operators during last six years.
• Studies:• Wind park Vardenik (Serbia) integration into
transmission system• CHP Zenica (Bosnia and Herzegovina) integration
into transmission system
• Versions 3.x were used for simulations of Southeast Europe dry-run coordinated auction office in 2008/2009.