Electrical Sources and Elements

AC and DC sources, breakers, transformers, RLC branches and loads, transmission lines

Blocks

Sources

AC Current Source	Implement sinusoidal current source
AC Voltage Source	Implement sinusoidal voltage source
Battery	Generic battery model
Controlled Current Source	Implement controlled current source
Controlled Voltage Source	Implement controlled voltage source
DC Voltage Source	Implement DC voltage source
Three-Phase Programmable Voltage Source	Implement three-phase voltage source with programmable time variation of amplitude, phase, frequency, and harmonics
Three-Phase Source	Implement three-phase source with internal R-L impedance

Transformers

Linear Transformer	Implement two- or three-winding linear transformer
Grounding Transformer	Implement three-phase grounding transformer providing a neutral in three-wire system
Saturable Transformer	Implement two- or three-winding saturable transformer
Multi-Winding Transformer	Implement multi-winding transformer with taps
Three-Phase Transformer (Three Windings)	Implement three-phase transformer with configurable winding connections
Three-Phase Transformer (Two Windings)	Implement three-phase transformer with configurable winding connections
Three-Phase Transformer 12 Terminals	Implement three single-phase, two-winding transformers where all terminals are accessible
Three-Phase Transformer Inductance Matrix Type (Three Windings)	Implement three-phase three-winding transformer with configurable winding connections and core geometry
Three-Phase Transformer Inductance Matrix Type (Two Windings)	Implement three-phase two-winding transformer with configurable winding connections and core geometry
Zigzag Phase-Shifting Transformer	Implement zigzag phase-shifting transformer with configurable secondary winding connection
Three-Phase OLTC Regulating Transformer (Phasor Type)	Implement phasor model of three-phase OLTC regulating transformer
Three-Phase OLTC Phase Shifting Transformer Delta-Hexagonal (Phasor Type)	Implement phasor model of three-phase OLTC phase-shifting transformer using delta hexagonal connection
Variable-Ratio Transformer	Discrete variable-ratio two-winding ideal transformer

Lines

PI Section Line	Implement transmission line with lumped parameters
Distributed Parameters Line	Implement N-phase distributed parameter transmission line model with lumped losses
Three-Phase PI Section Line	Implement three-phase transmission line section with lumped parameters
Distributed Parameters Line (Frequency-Dependent)	Distributed parameters line model with frequency-dependent parameters
Decoupling Line	Single-phase decoupling distributed parameters line
Decoupling Line (Three-Phase)	Three-phase decoupling distributed parameters line

Loads, Mutual Inductance, and Harmonic Filtering

Nonlinear Inductor	Discrete nonlinear inductor
Nonlinear Resistor	Discrete nonlinear resistor
Series RLC Branch	Implement series RLC branch
Series RLC Load	Implement linear series RLC load
Parallel RLC Branch	Implement parallel RLC branch
Parallel RLC Load	Implement linear parallel RLC load
Mutual Inductance	Implement inductances with mutual coupling
Three-Phase Harmonic Filter	Implement four types of three-phase harmonic filters using RLC components
Three-Phase Dynamic Load	Implement three-phase dynamic load with active power and reactive power as function of voltage or controlled from external input
Three-Phase Series RLC Branch	Implement three-phase series RLC branch
Three-Phase Series RLC Load	Implement three-phase series RLC load with selectable connection
Three-Phase Parallel RLC Branch	Implement three-phase parallel RLC branch
Three-Phase Parallel RLC Load	Implement three-phase parallel RLC load with selectable connection
Three-Phase Mutual Inductance Z1-Z0	Implement three-phase impedance with mutual coupling among phases
Variable Capacitor	Discrete variable capacitor
Variable Inductor	Discrete variable inductor
Variable Resistor	Discrete variable resistor

Breakers and Faults

Breaker	Implement circuit breaker opening at current zero crossing
Three-Phase Breaker	Implement three-phase circuit breaker opening at current zero crossing
Three-Phase Fault	Implement programmable phase-to-phase and phase-to-ground fault breaker system

Grounds

Ground	Provide connection to ground
Neutral	Implement common node in circuit
Surge Arrester	Implement metal-oxide surge arrester

Connection Ports

Connection Port

Create Physical Modeling connector port for subsystem

Functions

`power_new`	Create new Simscape Electrical Specialized Power Systems model populated by required and commonly used blocks
`power_cableparam`	Compute RLC parameters of radial copper cables with single screen, based on conductor and insulator characteristics
`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

Building and Customizing Simscape Electrical Specialized Power Systems Models

Model nonlinear systems and create custom nonlinear blocks.

Building a Model Using Model Construction Commands

Insert and connect blocks in your model using model construction commands.

Featured Examples

On Load Tap Changer (OLTC) Regulating Transformer Using Variable-Ratio Transformer Blocks

Illustrates the use of an On Load Tap Changer Transformer (OLTC) to regulate positive-sequence voltage at a 25-kV bus in a transmission network.

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Three-Phase Three-Limb (Core-Type) Two-Winding Transformer

Illustrates saturation in a Three-Limb Core-Type transformer and compares the Simscape™ Electrical™ Specialized Power Systems model with a Simscape-based physical model.

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Three-Phase Five-Limb (Shell-Type) Three-Winding Transformer

Illustrates saturation in a Five-Limb Shell-Type transformer and compares the Specialized Power Systems model with a Simscape-based physical model.

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Switching an Inductive Circuit Using a Breaker With No Snubber

The Ideal Switching device solution method of the Powergui block to model a circuit breaker.

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Steady-State Analysis of a Linear Circuit

The use of the Powergui and Impedance Measurement blocks to analyze the steady-state operation of a linear electrical circuit

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Transient Analysis of a Linear Circuit

Steady-state and transient simulation of a linear circuit.

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Three-Winding Distribution Transformer

The use of the linear transformer to simulate a three-winding distribution transformer rated 75 kVA - 14400/120/120 V.

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Three-Phase Saturable Transformer

The transformer saturation phenomenon.

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Three-Phase Core-Type Transformer

The use of the Three-Phase Transformer Inductance Matrix Type block to model a three-phase core-type saturable transformer. It also shows that using three single-phase transformers to simulate a Yg/Yg core-type transformer is not acceptable.

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