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© 2019 NAYAK

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Transient Stability and

Dynamic Security

Analysis Tool

DSA Tools

DSA Tools

The DSATools™ suite is the next-generation of power system analysis tools and provides the complete assessment of system security including all forms of stability.

The DSATools™ provide a complete tool-set for power system planning and operational studies. In addition to rich modeling capabilities and leading-edge computational methods, the software is highly automated and can provide engineers with significant productivity improvements.

For more information, please visit the DSATools website.

PSAT

PSAT™ (PowerFlow & Short Circuit Assessment Tool) is a full-featured graphical powerflow program that includes table-driven data manipulation and a flexible one-line diagram capability. It can be used for stand-alone powerflow analysis or for data exchange with the other DSATools™ products.

Applications

  • Creating and modifying powerflow models

  • Contingency assessment including overload and voltage studies

  • Producing diagrams for output reports

  • Setting up initial conditions for other DSATools applications

VSAT

VSAT™ (Voltage Security Assessment Tool) is a highly automated steady-state analysis tool designed for comprehensive voltage security assessment. VSAT™ includes flexible specification of voltage security criteria and is designed to handle a large number of contingencies, power transfers, and scenario

Applications

  • Reactive power planning studies

  • Operational planning studies (security limit assessment)

  • On-line voltage security assessment

  • Any analysis involving, Assessment of thermal overloads Determination of voltage security limits Evaluation of required voltage stability margins Transfer limits (ATC & TTC)

TSAT

TSAT™ (Transient Security Assessment Tool) is a leading-edge full time-domain simulation tool designed for comprehensive assessment of dynamic behavior of complex power systems. TSAT™ includes a rich model library, state-of-the-art solvers, and a highly intuitive user interface. Like VSAT™ and SSAT™, TSAT™ can automatically find security limits under specified contingencies and transfer conditions. 

Applications

  • Studies involving rotor angle, voltage, or frequency stability

  • Transmission system design and operating studies including stability limit assessments

  • IPP integration studies

  • Design and setpoint determination of special protection systems

  • Control tuning and protection coordination

SSAT

SSAT™ (Small Signal Analysis Tool) is an eigenvalue-based software tool designed for analysis of small signal stability of large complex power systems. It includes a wide number of analysis functions and productivity tools, making it ideal for investigating oscillatory behavior, and for designing and tuning controls to improve system damping.
Applications
  • Studies of low-frequency inter-area oscillations

  • Analysis of local or inter-machine modes of oscillations

  • Design and tuning of controls

  • Investigation of the sensitivity of system parameters on modes of oscillations

  • Contingencies screening to meet damping requirement

  • Determination of power transfer limit to meet damping requirement

WSAT

PSAT™ (PowerFlow & Short Circuit Assessment Tool) is a full-featured graphical powerflow program that includes table-driven data manipulation and a flexible one-line diagram capability. It can be used for stand-alone powerflow analysis or for data exchange with the other DSATools™ products.

Applications

  • Creating and modifying powerflow models

  • Contingency assessment including overload and voltage studies

  • Producing diagrams for output reports

  • Setting up initial conditions for other DSATools applications

CDT

CDT™ (Control Design Toolbox) is a specialized software tool for tuning power system stabilizers. CDT™ works with Matlab and SSAT™ to provide advanced tuning and benchmarking capabilities and is available as a stand-alone tool or as an add-on module to SSAT™.

Applications

Security Assessment in Near-Real Time:
 

The DSATools™ are designed to provide on-line security assessment when used in the real-time sequence of the control center's energy management system (EMS). The software works with a solved powerflow provided by the state-estimator and communicates with the EMS via flat files or TCP/IP network connection. Powertech's DSAManager™ controls all computations which are conducted on a dedicated cluster of computers and, if necessary, distributed processing is used to meet performance requirements. Results may be passed back to the EMS console or are accessible locally or remotely.