| Power System Blockset Release Notes |
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Chapter 1
SimPowerSystems 2.3 Release Notes
New Features
| Note
Previous versions of SimPowerSystems before Release 13 were called Power System Blockset.
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This section introduces the new features and enhancements added in the SimPowerSystems Version 2.3 since Version 2.2 (Release 12.1).
If you are upgrading from a release earlier than Release 12.1, then you should see New Features.
Simulation Enhancements
The SimPowerSystems 2.3 allows you to simulate almost any circuit with the Phasor simulation feature. In this solution method, the differential equations representing the network are replaced by a set of algebraic equations at a fixed frequency, reducing the simulation time dramatically. The Phasor simulation facilitates transient stability studies of multimachine systems. The the Transient Stability of 2 Machines demo illustrates a phasor simulation.
Electrical Sources Library Enhancements
The Three-Phase Programmable Voltage Source block has been added to the powerlib Electrical Sources library. This block implements a three-phase voltage source, with programmable time variation for the amplitude, phase, and frequency of the fundamental frequency, and two superposable harmonics.
Elements Library Enhancements
The following new blocks and enhancements have been added to the powerlib Elements library:
- The Dynamic Load block implements a three-phase dynamic load where the active power and reactive power can be programmed or controlled by external Simulink signals.
- The Zig-Zag Phase-Shifting Transformer block implements a three-phase transformer where the phase angle and phase shift can be specified.
- An optional hysteresis characteristic can be activated in the Saturable Transformer, Three-Phase Transformer (Two-Windings), and Three-Phase Transformer (Three-Winding) blocks.
Power Electronics Library Enhancements
The Three-Level Bridge block has been added to the powerlib Power Electronics library. You can use this block to model complex converter configurations
Machines Library Enhancements
The following new blocks and enhancements have been added to the powerlib Machines library:
- The Generic Power System Stabilizer (PSS) and Multi-Band Power System Stabilizers (MB-PSS) blocks have been added.
- The Static Var Compensator (SVC) block has been added for use with the phasor solution.
- Four new measurements have been added to the Machine Measurement Demux block for use with the Synchronous Machine block. See Synchronous Machine Block Output for a possible associated upgrade issue.
Powergui Enhancements
The Powergui block features new tools and enhancements:
- The Powergui block now replaces the old Discrete System block that was used in the previous versions to discretize models. The Discrete System block is still in the library for backward compatibility.
- The Phasor simulation feature is activated directly from the Powergui dialog. The frequency used during the simulation is specified in the dialog.
- The Impedance vs Frequency Measurement tool now displays the Bode plots directly in the Powergui dialog in order to limit the number of windows.
- The FFT Analysis tool is now available in the Powergui dialog. New parameters have been added to refine the calculations.
- A Hysteresis Design tool has been added that allows you to define and edit any hysteresis characteristics for use with the Saturable Transformer block.
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