# Power Transmission and Distribution

Transformation and transmission of power through transformers and lines

Transform and transmit power through transformers and lines.

## Blocks

## Functions

`power_loadflow` | Perform positive-sequence load flow or unbalanced load flow and initialize models containing load flow blocks |

`power_cableparam` | Compute RLC parameters and frequency-dependent model parameters of a group of cables |

`power_hysteresis` | View and edit hysteresis characteristic for saturable core of Saturable Transformer blocks |

`power_lineparam` | Compute RLC parameters of overhead transmission line from its conductor characteristics and tower geometry |

## Analysis Tools

Power Line Parameters | Compute RLC parameters of overhead transmission line from its conductor characteristics and tower geometry |

Specify Decoupling Lines | Replace selected Distributed Parameters Line blocks with Decoupling Line blocks |

## Topics

**Series-Compensated Transmission System**Explore a model for series compensation and related phenomena such as subsynchronous resonance in a transmission system.

**Improve Transient Stability Using SVC and PSS**Improve stability in a two-machine transmission system using a static var compensator (SVC) and power system stabilizers (PSS).

**Control Power Flow Using UPFC and PST**Control power flow using a unified power flow controller (UPFC) and a phase shifting transformer (PST).