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Harmonic Load Flow

Harmonic Load Flow Analysis

With the Harmonic Analysis module, you can simulate harmonic current and voltage sources, identify harmonic problems, reduce nuisance trips, design and test filters, and report harmonic voltage and current distortion limit violations.

Comprehensive load flow and frequency scan calculations are performed using detailed harmonic source models and power system component frequency models. Results are shown graphically, including harmonic order, harmonic spectrum plots, and harmonic waveform plots, as well as Crystal Reports.

Harmonic Load Flow Software Key Features

Complied Harmonic Standards
- IEEE 519
- ANSI/IEEE 399
- IEEE 141
- IEEE 519-2014 - MV / HV / EHV
- IEC 61000-3-14 - LV
- IEC 61000-3-6
Harmonic voltage and current distortion evaluation (THD & IHD)
Harmonic telephone influence factors (TIF & I*T)
Automatic alerts of harmonic violations
Typical and user definable harmonic sources library
Variable Frequency Drive (VFD) harmonic modeling
UPS AC input and output modeling for harmonic orders
Photovoltaic array inverter modeling for harmonic orders
Embedded Newton-Raphson and Gauss-Seidel load flow methods
Harmonic current injection method
Integrated with cable sizing in order to size cables based on harmonic load flow
Harmonic Filters & Sizing Software
Rule book for voltage & current distortion
WTG Type 4 harmonic modeling
Harmonic Grid Code Compliance

Harmonic Load Flow Software Capabilities

User-expandable harmonic source library
Modeling voltage & current harmonic sources
Considering both harmonic source magnitudes & phase angles
Harmonic source based spectrum or device parameters
Model up to the seventy-third (73rd) harmonic
Temperature-dependent line & cable resistances
Automatic adjustment of equipment impedance to harmonic frequency
Includes phase shifting transformers
Build-in single-tuned, high-pass, & band-pass harmonic filter models
Create harmonic filters to shift resonance points to less harmful frequencies
Identify harmonic distortion problems
Identify & analyze telephone interference problems by harmonics
Identify parallel resonance conditions
Fundamental load flow results
IEEE 519 defined harmonic indices
Total & harmonic voltage & current
Harmonic Distortions (THD & IHD)
Root Mean Square Values (RMS)
Voltage Arithmetic Summation (ASUM)
Telephone Interference Factor (TIF)
I*T product
Time-domain waveform plots
Frequency-domain harmonic spectrum plots
Harmonic filter performance evaluation
Report voltage & current harmonic distortions
Report RMS, ASUM, TIF, & I*T values
Text output reports including harmonic violation flags
Graphical one-line display of harmonic results
Voltage & current harmonic spectrum plots
Export one-line diagrams to third party CAD systems
Fundamental load flow results
Use Crystal Reports® for full color, customizable reports
Export output reports to your favorite word processor
Global, local & individual location compliance rule book for voltage & current distortion
Skin effect models for motors & transformers
Automatic TDD current distortion limit evaluation
Enhanced load equipment cable modeling
Voltage & current alerts with percentile multipliers
Multiple plot database comparison in single window using PlotAnalyzer™ tool