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Gulshan -e-Iqbal Karachi, Pakistan


ARSON Engineering’s Network Consultancy Department is giving its services to various Industrial Clients using Licensed ETAP Software to conduct Power System Studies.

Electrical Power systems are complex networks of electrical components, including generators, transformers, transmission lines, and distribution systems, that work together to generate, transmit, and distribute electrical energy.

A power system study refers to a comprehensive analysis of an electrical powersystem to ensure its efficient, reliable, and safe operation.

Power system studies are typically conducted using specialized software tools that simulate the behavior of the system under different conditions. These studies are crucial for the planning, design, and operation of power systems to ensure a reliable and stable supply of electrical energy.

These studies are a conducted usually for any new electrical installation, modification in existing system, modernization and expansion plan. 

Various studies are conducted to ensure the reliable, efficient, and economic operation of power systems.

Load Flow Analysis:

  • Determines steady-state operating conditions of the power system.
  • Analyzes the flow of electric power from the generation source to the load with different loading and generating scenarios.
  • Helps in determining voltage profiles, power losses, and equipment loading.
  • Operating Power Factor including its improvement can be analyzed for different operating scenarios.
  • Optimal Power Flow & Voltage Drop Analysis can be performed
    Cable and Bus bar sizing can be done or verified in this study.

Short Circuit Analysis:

  • The protective device coordination Study is performed to ensure that only the nearest protective device to a fault or abnormal condition operates to isolate the faulted section while minimizing disruption to the rest of the system.
  • Evaluates the system’s response to short circuit faults.
  • Analyze the effect of balanced and unbalanced faults.
  • Analyze the effect of balanced and unbalanced faults.
  • Assists in sizing protective devices such as circuit breakers and fuses.
  • Calculating fault level and comparing it to equipment capabilities at different points to identify problematic areas.
  • This study helps us in reducing cost by selecting a breaker with the required short-circuit rating.
  • Also helps in determining the limit to add new generators in an already installed system without upgrading short-circuit rating.

Protection Coordination Study:

  • The protective device coordination Study is performed to ensure that only the nearest protective device to a fault or abnormal condition operates to isolate the faulted section while minimizing disruption to the rest of the system
  • Ensures operation on minimum possible fault current Involves coordination of relays and protection devices to respond appropriately to different fault scenarios.
  • This analysis mode provides a graphical view of the operation times of protective devices based on their corresponding settings and characteristics for specified fault location and type.
  • A Protection Coordination Study is a systematic analysis of electrical protection devices and settings within a power system to ensure timely and selective operation, preventing disruptions and minimizing damage during faults. It involves evaluating coordination between relays and circuit breakers to enhance system reliability and safety.

Harmonic Analysis:

  • This Study examines the presence of harmonic frequencies in the system.
  • Comprehensive load flow and frequency scan calculations are performed using detailed harmonic source models and power system component frequency models.
  • Report harmonic voltage and current distortion limit violations.
  • Helps in designing filters and mitigating harmonic distortion issues.

Motor Starting Analysis:

  • Enables system planners and engineers to calculate motor acceleration time and analyze the impact of motor starting for various conditions on electrical power systems.
  • Study includes evaluation of the starting current, voltage drop, voltage dip, and required start time.
  • Also helps in making sure that motor will not experience nuisance tripping during start

Transient Stability Analysis:

  • Evaluates the ability of the power system to maintain synchronism under transient conditions.
  • Assesses the system’s response to large disturbances, such as faults or sudden changes in load.
  • Identifies critical components and potential vulnerabilities that may compromise stability.
  • Utilizes mathematical models and simulation tools to predict system behavior during transient events.

Arc Flash Analysis:

  • Electrical arc flash analysis, is a detailed examination of an electrical power system to assess the potential for arc flash incidents. Determine where arc flash hazards exist within the electrical system.
  • Assess the potential severity of arc flash incidents, including the amount of energy released during an arc flash event.
  • Establish safety measures and procedures to minimize the risk of arc flash incidents and protect personnel.


Conducting Electrical Power System Studies, whether on existing systems or those being planned for construction, is crucial for reliability, efficiency, safety, and optimal performance of the power system.

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