Keentel – Software Capabilities FAQ

Our Software Capabilities

PSS®E

ETAP

PSCAD

PowerWorld

SKM PTW

AutoCAD Elec.

ASPEN

General FAQs

What is PSS®E software?

PSS®E (Power System Simulator for Engineering) is a power system simulation software developed by Siemens for analyzing and planning electrical transmission networks. It allows engineers to model large-scale power systems and perform detailed studies related to grid reliability and system performance.

What is PSS®E used for in power system studies?

PSS®E is used for transmission planning, interconnection studies, contingency analysis, stability simulations, and grid expansion planning.

Who uses PSS®E software?

Electric utilities, transmission planners, system operators, renewable energy developers, consulting firms, and research institutions.

Can PSS®E be used for renewable energy integration?

Yes. PSS®E supports modeling of inverter‑based resources such as solar plants, wind farms, and battery storage.

Why is PSS®E widely used in transmission planning?

It supports very large power system models (up to 200,000 buses), advanced dynamic simulations, and automated workflows.

Technical FAQs

How does PSS®E perform contingency analysis?

Simulates outage scenarios (line/generator/transformer failures) and identifies voltage or thermal violations.

What dynamic simulations can be performed?

Transient stability, generator dynamics, renewable inverter response, and disturbance ride‑through.

What is PV / QV analysis?

Evaluates voltage stability margins and determines the system's ability to maintain voltage under increasing load.

How does PSS®E support large models?

Optimized numerical algorithms and sparse matrix techniques allow simulation of networks with up to 200,000 buses.

Can PSS®E simulations be automated?

Yes, via extensive Python APIs for contingency automation, batch simulations, and custom workflows.

General FAQs

What is ETAP software?

ETAP is an electrical power system engineering platform for design, simulation, analysis, and operation of industrial and utility networks.

What studies can ETAP perform?

Power flow, short circuit, arc flash, protection coordination, harmonic, and dynamic stability.

What industries use ETAP?

Utilities, renewable plants, data centers, oil & gas, industrial manufacturing, and infrastructure.

What is ETAP Electrical Digital Twin?

A virtual model that mirrors the physical network for predictive simulation and real‑time monitoring.

Why is ETAP widely used?

Integrated design, simulation, monitoring, and optimization in one platform.

Technical FAQs

How does ETAP perform short circuit analysis?

Uses ANSI/IEEE C37 and IEC 60909 standards to evaluate fault currents and equipment ratings.

What is ETAP arc flash analysis?

Calculates incident energy and safety boundaries per IEEE 1584 and NFPA 70E.

How does ETAP perform protection coordination?

Uses TCC curves to evaluate relay/breaker/fuse coordination for selective fault isolation.

Can ETAP simulate renewables?

Yes – solar PV, wind generators, battery storage, and microgrids.

What dynamic simulations are available?

Generator trips, faults, motor starting, switching events, and transient stability.

General FAQs

What is PSCAD?

Electromagnetic transient (EMT) simulation software for fast electrical phenomena in power systems.

What is PSCAD used for?

HVDC studies, converter modeling, inverter simulations, lightning surge analysis, and EMT studies.

Who uses PSCAD?

Utilities, renewable developers, manufacturers, consultants, and research institutions.

Why is PSCAD important for renewables?

Simulates inverter‑based resources and complex electromagnetic interactions.

What systems can PSCAD model?

Transmission networks, HVDC, renewable plants, power electronics, and protection systems.

Technical FAQs

What is EMT simulation?

High‑frequency analysis of switching, lightning, and converter transients.

How does PSCAD model transmission lines?

Distributed parameter models capture traveling wave behavior.

What time steps are used?

Microseconds to tens of microseconds, depending on system complexity.

Can PSCAD simulate HVDC?

Yes, detailed models for LCC and VSC HVDC systems.

How does PSCAD simulate inverters?

Uses detailed converter control models for grid‑forming/following behavior.

General FAQs

What is PowerWorld?

Power system visualization and simulation software for transmission networks.

What is PowerWorld Simulator?

Interactive tool for power flow, contingency analysis, and voltage stability.

Who uses PowerWorld?

Utilities, transmission planners, operators, consultants, universities.

What studies can be performed?

Power flow, contingency, OPF, voltage stability, fault analysis.

What makes PowerWorld unique?

Interactive animated one‑line diagrams and geographic displays.

Technical FAQs

How does contingency analysis work?

Simulates outage scenarios and flags overloads or voltage violations.

What numerical method is used?

Newton‑Raphson for efficient large‑system power flow.

What is PV/QV analysis?

Determines voltage stability margins and collapse points.

What is OPF?

Optimal Power Flow – minimizes cost while respecting constraints.

How large a system can it handle?

Up to approximately 250,000 buses.

General FAQs

What is SKM PowerTools?

Electrical engineering platform for power system design, analysis, and safety.

What studies can SKM perform?

Load flow, short circuit, arc flash, coordination, harmonics, grounding.

What industries use SKM?

Utilities, industrial plants, data centers, oil & gas, commercial buildings.

What is SKM CAPTOR?

Protective device coordination module using TCC curves.

Why is SKM widely used?

Integrated modules allow multiple studies in one platform.

Technical FAQs

How does SKM perform short circuit analysis?

Uses ANSI/IEC standards, calculates symmetrical/asymmetrical fault currents.

What is arc flash analysis in SKM?

Incident energy and boundaries per IEEE 1584 / NFPA 70E.

How does SKM perform load flow?

Calculates voltage levels, power flows, and system losses.

Can SKM simulate harmonics?

Yes, HI_WAVE module evaluates distortion from non‑linear loads.

How does SKM evaluate protection coordination?

Analyzes TCC curves to ensure selective fault isolation.

General FAQs

Difference between AutoCAD and AutoCAD Electrical?

AutoCAD Electrical provides intelligent automation: wire numbering, component tagging, error checking.

Suitable for substation design?

Yes – protection schematics, relay panels, AC/DC diagrams.

NERC compliance?

Supports traceable documentation, tagging, and QA/QC processes.

Relay protection design?

Create relay logic, trip/close circuits, CT/PT connections, custom vendor symbols.

How does it improve productivity?

Automated wire numbering, component tagging, report generation, error checking.

Technical FAQs

Automatic BOM generation?

Yes, extracts real‑time data for BOM, panel schedules, cable lists.

Useful for industrial control?

Widely used for PLC, MCC, SCADA, and factory automation.

Multi‑user collaboration?

Yes, shared project databases + Autodesk Vault integration.

Supports IEC / ANSI standards?

Built‑in symbol libraries for IEC, ANSI, JIC; switchable standards.

Which industries use it?

Power utilities, renewables, oil & gas, manufacturing, infrastructure.

General FAQs

What makes ASPEN OneLiner essential for protection engineers?

ASPEN OneLiner provides advanced short circuit analysis and relay coordination capabilities, enabling engineers to simulate faults, validate protection schemes, and ensure compliance with ANSI, IEC, and NERC standards.

How does ASPEN Power Flow support transmission planning?

It allows engineers to analyze voltage profiles, system losses, and contingency conditions, helping utilities plan system expansions and ensure operational reliability.

Why is phase-domain modeling important in DistriView?

Phase-domain modeling captures unbalanced conditions in distribution systems, providing more accurate results compared to traditional sequence-based methods.

How does the Breaker Rating Module ensure equipment safety?

It simulates worst-case faults, calculates adjusted currents using X/R ratios, and compares them against breaker ratings per ANSI/IEC standards.

What role does the Line Database play in system studies?

It provides highly accurate impedance and capacitance parameters, which are critical inputs for fault and load flow calculations.

Technical FAQs

How does Power Flow handle voltage control?

It uses automatic algorithms for generators, LTC transformers, shunts, and phase shifters.

What is the importance of X/R ratio in breaker studies?

It affects the asymmetrical current and determines the actual interrupting duty on breakers.

How does DistriView perform harmonic analysis?

It includes frequency scan and harmonic load flow capabilities to evaluate system distortion.

What is the advantage of ASPEN’s relay modeling?

It supports detailed manufacturer-specific relay logic, improving study accuracy.

How does ASPEN support renewable integration?

It models inverter-based resources such as solar, wind, and BESS systems.

Harmonic Analysis – Keentel Engineering | Power Quality

What Is Harmonic Analysis?

Harmonic analysis evaluates the distortion of electrical waveforms caused by nonlinear loads and power electronic equipment.

In an ideal power system, voltage and current waveforms are purely sinusoidal. However, nonlinear devices can distort these waveforms by introducing additional frequency components called harmonics.

Harmonics occur at frequencies that are integer multiples of the fundamental system frequency.

Fundamental frequency (60 Hz)
3rd harmonic (180 Hz)
5th harmonic (300 Hz)
7th harmonic (420 Hz)

Power System harmonic Analysis calculates these distortion levels and evaluates their impact on the power system.

Harmonic distortion in power systems: fundamental sinusoidal waveform overlaid with 3rd, 5th, and 7th harmonic components, resulting in a distorted current waveform for harmonic analysis study and power quality assessment

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Four‑Step Harmonic Study Methodology

Electrical engineer collecting harmonic study data including transformer impedance, line parameters, generator data, nonlinear loads, and grounding system specifications for power system harmonic analysis

STEP 01

Collect system data for accurate modeling.

Transformer impedance
Line parameters
Generator data
Nonlinear loads
Harmonic sources
Grounding system

Modeling harmonic sources from solar inverters, variable frequency drives (VFDs), rectifiers, battery energy storage systems, and industrial loads in electrical network harmonic simulation

STEP 02

Model harmonic sources.

Solar inverters
VFD systems
Rectifiers
Battery systems
Industrial loads
Frequency spectrum

Harmonic propagation analysis showing voltage distortion, current distribution, resonance points, system impedance, and total harmonic distortion (THD) levels across the electrical network using harmonic load flow study

STEP 03

Analyze harmonic propagation.

Harmonic load flow analysis is used to evaluate distortion levels across the electrical network, often alongside short circuit analysis

Voltage distortion
Current distribution
Resonance
Impedance
THD levels

Harmonic mitigation solutions including passive harmonic filters, active power filters, line reactors, transformer reconfiguration or upgrades, and overall system optimization for power quality improvement

STEP 04

Apply mitigation solutions.

Targeted filtering and reactor installations minimize harmonic impacts on equipment.

Passive filters
Active filters
Line reactors
Transformer changes
System optimization

Benefits of Harmonic Analysis | Power Quality & Standards

Benefits of Harmonic Analysis

Organizations performing harmonic studies gain several advantages — improving power quality, protecting equipment, and ensuring compliance with power quality standards.

Improved Power Quality

Harmonic Analysis for Power Systems (DARF) helps maintain acceptable voltage and current waveform quality by identifying and controlling harmonic distortion in electrical systems.

Protection of Electrical Equipment

Reducing harmonic distortion prevents overheating of transformers, cables, and motors.

Compliance with Standards

Harmonic studies ensure compliance with IEEE 519 standards.

Increased System Efficiency

Minimizing harmonic distortion improves system efficiency.

Enhanced System Reliability

Proper harmonic management ensures stable operation.

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Power lines silhouetted against a sunset with orange, yellow, and blue hues.

Harmonic Analysis FAQ | Keentel Engineering

1) What is Harmonic Distortion in Power Systems? ▼

Harmonic distortion occurs when non-linear electrical devices, such as variable frequency drives and solar inverters, generate harmonics that distort the electrical waveform. This can affect the overall efficiency and reliability of power systems.

2) Why is Harmonic Analysis Important for Power Systems? ▼

Harmonic analysis helps evaluate the distortion caused by power electronic devices, ensuring that the power system remains efficient, reliable, and compliant with power quality standards.

3) What Equipment is Affected by Harmonic Distortion? ▼

Equipment such as transformers, motors, and cables can overheat and suffer damage from harmonic distortion. Harmonic studies help identify these risks and mitigate potential damage.

4) How Can Harmonic Distortion Be Mitigated? ▼

Mitigation methods include passive and active filters, line reactors, transformer modifications, and system optimization techniques.

5) What Standards Govern Harmonic Analysis? ▼

Harmonic analysis and mitigation must comply with standards such as IEEE 519, which sets limits on harmonic distortion levels.

6) What is Power System Harmonic Analysis? ▼

Power system harmonic analysis evaluates voltage and current distortion caused by nonlinear loads and ensures compliance with power quality standards such as IEEE 519.

7) What is Harmonic Load Flow Analysis? ▼

Harmonic load flow analysis calculates harmonic currents and voltages across the system to evaluate distortion levels and system response.

8) What Causes Harmonic Distortion in Electrical Systems? ▼

Harmonic distortion is caused by nonlinear devices such as VFDs, inverters, rectifiers, and battery energy storage systems.

9) Why is Harmonic Analysis Important for Renewable Energy Systems? ▼

Renewable systems use power electronics that introduce harmonics, making harmonic analysis critical for grid stability and compliance.