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Análisis armónico

La cantidad de dispositivos electrónicos y otras cargas no lineales conectadas al sistema eléctrico generan armónicos que afectan la calidad de la energía que se suministra a los usuarios finales. Los condensadores, que se instalan para mejorar la tensión del sistema y reducir pérdidas, pueden generar una resonancia si su ubicación no es óptima. Si no se mitigan estas distorsiones armónicas, provocan un efecto perjudicial en la calidad de la energía, ya que pueden provocar el mal funcionamiento del equipo, el sobrecalentamiento del equipo y una mayor pérdida de energía. 
El módulo de análisis armónico de CYME de Eaton ayuda a los ingenieros a evaluar el nivel de armónica de sus redes eléctricas y de los diferentes métodos de mitigación. Permite realizar numerosos análisis, como un examen de frecuencia, cálculos de distorsión de tensión y corriente, clasificación del condensador y análisis del tamaño del filtro, además de los cálculos del factor K. El módulo permite al usuario modelar cargas no lineales y otras fuentes de corrientes armónicas, como las de los convertidores y hornos de arco eléctrico, y detectar fácilmente las frecuencias resonantes debido a los bancos del condensador.  Gracias a las diversas capacidades analíticas y de modelado, el módulo permite evaluar con precisión el impacto de las cargas no lineales en la red eléctrica.

ANÁLISIS ARMÓNICO

GENERAL
The Harmonic Analysis module features both single-phase and full three-phase modeling capabilities, with the flexibility to make the program easily adaptable to utility-type grids, industrial power systems and distribution feeders of any configuration. It utilizes state-of-the-art sparse matrix/vector methods with a three-phase nodal admittance network matrix representation. The module uses Eaton's CYME robust load flow algorithm to obtain the fundamental frequency current and voltage system profile for harmonic distortion calculations and waveform display.
IMPEDANCE SCAN
The frequency scan capability included in this module is also available as an independent module. This analysis provides full impedance scan results and allows the user to see problematic areas even before installing harmonic devices.
ANALYTICAL CAPABILITIES
  • Phase or sequence analysis
  • Driving point and transfer point frequency scan analysis
  • Harmonic voltage distortion analysis
  • Harmonic current distortion analysis
  • Calculation of telephonic interference indices (TIF, IT, etc.)
  • Evaluate system sensitivity level
  • Harmonic cancellation
  • System detuning via filter sizing
  • Capacitor stress analysis
  • Skin effect modeling
  • User defined distortion limits or as per IEEE 519™ 1992 standard
  • Selection of line/cable models: series R-L, nominal Pl, transposed and un-transposed distributed parameters, and frequency-dependent
  • Selection of load models: (Parallel R-L, Series R-L, CIGRE C-Type, etc.)
CAPACITOR STRESS AND FILTER SIZING

The Harmonic Analysis module features stress analysis of capacitors, including those incorporated in filters, to help engineers determine whether the capacitors are rated properly according to user-defined or IEEE standard limits.

Likewise, fundamental resistor losses, fundamental and harmonic current through the reactance, and fundamental and harmonic voltage through the capacitor of filters are calculated to help engineers determine if the filters are sized properly.

TRANSFORMER K-FACTOR CALCULATION
The Harmonic Analysis module also offers the Transformer K-Factor (ANSI/IEC) and Factor-K (BS) calculation for the assessment of transformer rating with respect to the harmonic level of the system.
EQUIPMENT LIBRARY

Users can model multiple types of harmonic sources to assess the effectiveness of filters and modify them at will in order to attain acceptable level of harmonic distortion indices on your network.

Our extensive library includes equipment such as: 

  • Ideal and non-ideal converters
  • Generic single or multiple frequency current and voltage source models. This includes a library of drives with typical harmonic spectrum as per IEEE 519.18
  • Arc furnace model
  • Passive shunt filter models comprising single tuned, high-pass, double tuned and C-type
  • Library of single-phase and three-phase transmission line and cable models, series R-L, nominal Pl and distributed parameters
  • Synchronous and induction motor models
  • Single-phase and three-phase transformer models allowing harmonic cancellation through their phase shift angles
  • Modeling harmonic sources of nonlinear loads and power electronics equipment
  • Static load modeling: parallel R-L and CIGRE C-Type
  • Series and parallel RLC branch circuits to create any user defined equipment

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Tel.: 450-461-3655 o 800-361-3627 (Canadá & EE. UU.)

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