Chapter 1
Block Reference

What Each Block Reference Page Contains

• The block name and icon
• The purpose of the block
• A description of the block's use
• The block dialog box and parameters
• Additional information, as it applies to the block:
  • Inputs and outputs - A description of the inputs and outputs of the block
  • Assumptions and limitations to the block's use
• An Example using the block
• A See Also of related blocks

The Power System Block Libraries

• The Electrical Sources library contains blocks that generate electric signals
• The Elements library contains linear and nonlinear network elements
• The Power Electronics library contains power electronics devices
• The Machines library contains machinery models
• The Connectors library contains blocks that can be used to interconnect blocks in various situations
• The Measurements library contains blocks for the current and voltage measurements
• The powerlib Extras library contains the powerlib Extra block library of tri-phase blocks and specialized measurements and control blocks. These blocks are not documented in the block reference section.
• The Demos library contains useful demos and case studies. These demos are not documented in the block reference section.
  
  

  Table 1-1 Electrical Sources Library

  Block Name	Purpose
  AC Current Source	Implement a sinusoidal current source
  AC Voltage Source	Implement a sinusoidal voltage source
  Controlled Current Source	Implement a controlled current source
  Controlled Voltage Source	Implement a controlled voltage source
  DC Voltage Source	Implement a DC voltage source

  Table 1-2 Elements Library

  Block Name	Purpose
  Breaker	Implement a circuit breaker opening at current zero crossing
  Distributed Parameter Line	Implement an N-phases distributed parameter line model with lumped losses
  Linear Transformer	Implement a two- or three-windings linear transformer
  Mutual Inductance	Implement a magnetic coupling between two or three windings
  Parallel RLC Branch	Implement a parallel RLC branch
  Parallel RLC Load	Implement a linear parallel RLC load
  PI Section Line	Implement a single phase transmission line with lumped parameters
  Saturable Transformer	Implement a two- or three-windings saturable transformer
  Series RLC Branch	Implement a series RLC branch
  Series RLC Load	Implement a linear series RLC load
  Surge Arrester	Implement a metal-oxide surge arrester

  Table 1-3 Power Electronics Library

  Block Name	Purpose
  Diode	Implement a diode model
  GTO	Implement a GTO-thyristor model
  Ideal Switch	Implement an ideal switch model
  Mosfet	Implement a mosfet model
  Thyristor	Implement a thyristor model

  Table 1-4 Machines Library

  Block Name	Purpose
  Asynchronous Machine	Model the dynamics of a three-phase asynchronous machine
  Excitation System	Provide an excitation system for the synchronous machine and regulate its terminal voltage in generating mode
  Hydraulic Turbine and Governor	Model a hydraulic turbine and a PID governor system
  Permanent Magnet Synchronous Machine	Model the dynamics of a three-phase permanent magnet synchronous machine with sinusoidal flux distribution
  Simplified Synchronous Machine	Model the dynamics of a simplified three-phase synchronous machine
  Synchronous Machine	Model the dynamics of a three-phase salient-pole synchronous machine

  Table 1-5 Connectors Library

  Block Name	Purpose
  Bus Bar	Implement a labeled network node
  Ground	Provide a connection to the ground
  Neutral	Implement a local common node in the circuit

  Table 1-6 Measurements Library

  Block Name	Purpose
  Current Measurement	Measure a current in a circuit
  Voltage Measurement	Measure a voltage in a circuit

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