All Applications

EMTP® is the most technically advanced transients analysis software for the simulation and analysis of electromagnetic, electromechanical and control systems transients in multiphase electric power systems.
EMTP® is suited to a wide variety of power system studies including and not limited to:
 
Insulation coordination Power electronics and FACTS
Switching surges Wind generation
Ferroresonnance Lightning surges
HVDC Network analysis
Protection Series compensation
Shaft torsional stress Switchgear
Synchronous machines

 

 

Insulation coordination:

  • Overhead lines,
  • Outdoor stations,
  • Gas-insulated substations,
  • Arrester duty
Insulation Coordination of 765 kV GIS, Lightning		  
  • Specification of insulation levels
  • Installation of protective devices

–For economically acceptable risk of failure
–Insulation coordination

 

  • Lighting surges can cause insulator chain breakdown

–Service disruption
–Voltage dips

 

  • Direct lightning

-Lightning is current source model (CIGRE Model)

 

  • Induced lightning

–Induced voltage: less than 10 kV, problematic for lower voltage systems

 

  • Can requires statistical and parametric studies

Switching surges:

  • Study of switching topologies
  • Typical network events
  • Switching of transmission lines
  • Fault appearance and elimination
  • Capacitor bank switching
  • Reactor switching
  • Breaker models:
  • Ideal switches for TRV studies
  • Arc models for arc quenching capability studies
  • Can requires statistical and parametric studies
 switching topologies, switches for TRV studies, graphing
 

Ferroresonance

  • Oscillating phenomena
  • 4 necessary elements
–Non-linear Inductance ( Power Transformers, Potential Measurement Transformers, …)
–Capacitance (Cables, Air-insulated conductors,….)
–Voltage Source
–Low losses
 
  • EMTP® models (transformers, cables, lines, …) are precise and valid over the frequency range of interest
  • EMTP® solver simulates the non-linearities with a high-accuracy
  • EMTP® can be used for understand, analyze and eliminate ferroresonance

Power electronics and FACTS
(HVDC, Multiterminal HVDC systems, SVC, VSC, TCSC)

 

  • EMTP® solver provides advanced algorithms for the simulation of Power Electronics that avoid numerical instability when switching
  • Detailed models of switching cells can be implemented
  • Control system can be designed
  • Many examples of FACTS (SVC, STATCOM, ….) are provided
 Power Electronics Facts or PEFacts

 

HVDC

  • HVDC simulation requires both a good solver and precise models (MOSFETs, Control, Lines&Cables, Fault, ….)
  • Bipolar, Back-to-Back and Multi-terminal HVDC systems can be simulated
  • Both Average-Value Model (fast) or Detailed Models (precise) can be simulated
  • Generic and complete models of Modular Multilevel HVDC Converter (MMC) are provided

HVDC VSC-MMC transmission system 1,000 MVA (+/- 320kV DC)

 

Lightning surges:

  • Backflash,
  • induced surges,
  • incoming surges at stations.

Network analysis:

  • Network separation, power quality, geomagnetic storms, interaction between compensation and control components, wind generation
  • Unbalanced distribution networks.
  • Detailed simulation and analysis of large scale (unlimited size) electrical systems.
  • Distribution networks and distributed generation

Protection:

  • Power oscillations,
  • Saturation problems,
  • Surge arrester influences.

Series compensation:

  • MOV energy absorption,
  • Short-circuit conditions,
  • Network interaction.

Shaft torsional stress:

  • Subsynchronous resonance,
  • Switching-induced

Switchgear:

  • TRV,
  • Shunt compensation,
  • Current chopping,
  • Delayed-current zero conditions,
  • Arc interaction.

Synchronous machines:

  • SSR,
  • auto-excitation,
  • control.
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