Power System Analysis Services in Pakistan | ACCO’s Electrical Network Engineering

Your textile mill in Faisalabad is planning an expansion. New motors, new VFDs, new lighting. The existing 2000 kVA transformer seems adequate, but you are not sure. You ask your electrical contractor, “Will the system handle the new load?” He shrugs. “Probably.”

“Probably” is not an acceptable answer when millions of rupees of equipment and worker safety are at stake. What happens if you add the loads and the transformer is undersized? Overheating, premature failure, voltage drop, production stoppages. What if the new loads increase fault current beyond the breaking capacity of your switchgear? Breakers could explode during a fault. What if a new generator causes reverse power flow that damages your utility connection?

Power systems are complex networks. Adding a single load can change fault current levels, voltage profiles, protection coordination, and stability margins. Guessing is dangerous. The only professional approach is engineering analysis—using specialized software to model the system, calculate performance, and identify risks before they become failures.

Ahmed Construction Company (ACCO) has spent over 25 years providing professional Power System Analysis services in Pakistan for industrial facilities, commercial buildings, and utility substations. From our headquarters in Gulberg-III, Lahore, and our office in Karachi, we perform short circuit studies, load flow analysis, protection coordination, arc flash analysis, and stability studies using industry-standard software (ETAP, SKM, or DigSILENT). When you need to ensure your electrical system is safe, reliable, and code-compliant, ACCO delivers engineering you can trust.

What Is Power System Analysis?

Power system analysis is the engineering discipline of mathematically modeling an electrical network to predict its behavior under normal and abnormal conditions. Using specialized software (ETAP, SKM PowerTools, DigSILENT PowerFactory), we create a digital twin of your electrical system: all transformers, generators, cables, switchgear, motors, capacitor banks, and loads. We then run simulations to answer critical questions about your system’s safety, reliability, and efficiency.

Power system analysis includes several interconnected studies: Short circuit analysis calculates fault currents at every bus in your system. This determines whether circuit breakers have adequate interrupting rating (safety). Load flow analysis calculates voltage levels, power flows, and losses under normal operating conditions. This identifies overloaded transformers or cables and excessive voltage drop. Protection coordination study determines appropriate relay and breaker settings so that only the faulted section trips (selectivity), not the entire plant. Motor starting study analyzes voltage dip during large motor starting and ensures successful acceleration. Harmonic analysis measures voltage and current distortion from VFDs, UPS, and other non-linear loads, and designs filters if needed. Arc flash analysis calculates incident energy at working distances and determines required personal protective equipment (PPE) for worker safety.

In Pakistan, power system analysis is essential for: Industrial facilities (textile mills, cement plants, chemical plants, steel mills), Commercial buildings (high-rise with generators, data centers, hospitals), Utility substations (11kV to 132kV), and Captive power plants (grid parallel operation). Our Power System Analysis services in Pakistan follow IEC 60909 (short circuit), IEEE 141 (load flow), IEEE 242 (protection), and IEEE 1584 (arc flash). We integrate analysis findings with your building design and architectural engineering plans for switchgear rooms. Our architectural drafting team produces single line diagrams and panel schedules based on analysis results.

ACCO – 25+ Years of Power Engineering Excellence

Ahmed Construction Company (ACCO) has been a trusted partner for Pakistan’s power and industrial sectors for over two decades. Our office at Office 2, 3rd Floor, Bigcity Plaza, Gulberg-III, Lahore, serves as our engineering headquarters, while our Karachi branch handles clients in the southern region. Together, we have delivered over 500 projects including power system studies and analyses.

Our client list includes major names such as Meezan Bank, Bata, PTC, BUITMS, Savour Foods, Alpine, Lake View, and Gerry DNATA. These organizations trust ACCO because we deliver engineering that optimizes their power systems. Our multi-disciplinary team includes power system engineers, architectural engineering specialists, and 3D architectural walkthrough experts working under one roof. When you request Power System Analysis services in Pakistan from ACCO, you get actionable recommendations based on rigorous simulation.

Our Complete Power System Analysis Service Breakdown

We offer a comprehensive suite of power system studies. Below is a detailed breakdown of our capabilities.

Short Circuit Analysis (Fault Current Calculation)

Short circuit analysis calculates the maximum fault current available at each bus in your system. This is required to specify circuit breakers with adequate interrupting rating. Underspecified breakers can explode during a fault. Overspecified breakers are unnecessarily expensive. We calculate three-phase bolted fault, line-to-ground fault, and line-to-line fault currents per IEC 60909 (for international equipment) or IEEE 141 (for North American equipment). We provide a complete fault current schedule for every bus, and recommendations for breaker upgrades if existing devices are underrated.

• Software: ETAP or SKM PowerTools
• Typical findings: Breakers underrated for available fault current (common after transformer upgrades), breakers overrated (unnecessarily expensive)

Load Flow Analysis (Power Flow Study)

Load flow analysis calculates voltage levels, real power (MW) flows, reactive power (MVAR) flows, and losses under normal operating conditions. It identifies: overloaded transformers or cables (components operating above 100% of rating), low voltage (below acceptable limits, e.g., 380V on 415V system), high voltage (above acceptable limits, e.g., from generator overspeed), power factor issues (low PF causing utility penalties), and losses (identifying inefficiencies). We provide voltage profiles for all buses, power flow results, and recommendations for power factor correction, transformer tap changes, or load shedding.

Protection Coordination Study (Relay Setting & Selectivity)

A protection coordination study ensures that only the faulted section of the system trips, while upstream breakers remain closed (selectivity). Without proper coordination, a fault on one motor might trip the main breaker, shutting down the entire plant. We model all protective devices: circuit breakers (thermal-magnetic or electronic), relays (overcurrent, earth fault, differential, distance), fuses, and motor protection relays. We analyze time-current curves (TCC) to verify selectivity. We provide recommended relay settings (pickup, time dial, curve type) and short circuit current withstand ratings.

Typical Settings Provided: - Overcurrent relay (51) pickup, time dial, IEC curve selection - Instantaneous (50) pickup - Earth fault (51N) pickup - Motor protection (49 thermal, 50 instantaneous, 51 overload) 

Motor Starting Analysis

Large motors (100HP+) draw 6-8 times normal current during starting. This can cause: voltage dip (lights dim, sensitive equipment trips), excessive starting time (motor fails to accelerate), thermal stress (motor overheating). We model motor starting using dynamic simulation. We calculate voltage dip at motor terminals and at other buses. We verify motor torque sufficient to accelerate load. We recommend reduced voltage starting (autotransformer, soft starter, VFD) if required.

Harmonic Analysis (Power Quality Study)

VFDs, UPS, and other non-linear loads inject harmonic currents. Harmonics cause: transformer overheating (additional eddy current losses), capacitor failures (high current through power factor capacitors), nuisance breaker tripping, neutral conductor overheating (triplen harmonics), and misoperation of sensitive electronics. We measure or estimate harmonic spectrum. We model harmonic sources and system impedance. We calculate voltage and current distortion (THD, TDD). We design harmonic filters (tuned or broadband) if distortion exceeds IEEE 519 limits. Pakistan utilities are increasingly enforcing harmonic limits.

Arc Flash Analysis (NFPA 70E / IEEE 1584)

Arc flash is one of the most dangerous electrical hazards—temperatures can reach 20,000°C, causing severe burns and death. Arc flash analysis calculates incident energy (cal/cm²) at working distances. Using short circuit results and protection clearing times, we compute arc flash boundary (distance within which a worker could receive second-degree burns), incident energy (determines required PPE category), and required PPE (arc-rated clothing, faceshield, gloves). We produce arc flash warning labels for every panel, switchboard, and MCC.

Comparison: ACCO vs. Typical Electrical Contractor

Most electrical contractors do not perform power system analysis—they rely on rules of thumb. ACCO provides rigorous analysis. See the comparison below.

Our 6-Step Power System Analysis Process

We follow a systematic, software-based process to deliver actionable analysis.

1. Step 1 – Data Collection & System Modeling
   We gather electrical system data: transformer nameplates (kVA, voltage, impedance), generator ratings, cable types and lengths (from drawings or measurement), motor ratings (HP/kW, efficiency, power factor), load schedules, and protective device settings (existing breakers/relays). We build a detailed model in ETAP or SKM.
2. Step 2 – Utility Data Acquisition
   We obtain utility fault current data (maximum and minimum) and utility nominal voltage. For grid-parallel systems, we also obtain utility protection requirements (relay settings, anti-islanding).
3. Step 3 – Short Circuit Analysis (First Run)
   We run short circuit simulation to calculate maximum and minimum fault currents at every bus. We compare calculated fault currents to breaker interrupting ratings. We identify underrated breakers requiring replacement.
4. Step 4 – Load Flow & Motor Starting Analysis
   We run load flow simulation to calculate voltage profiles, component loading, and losses. If large motors present, we run dynamic motor starting simulation to calculate voltage dip and verify motor acceleration. We identify overloaded components and voltage issues.
5. Step 5 – Protection Coordination & Arc Flash Analysis
   Using short circuit results, we perform protection coordination study. We develop time-current curves (TCC). We recommend relay and breaker settings for selectivity. We then run arc flash analysis per IEEE 1584 to calculate incident energy, arc flash boundary, and required PPE. We produce arc flash labels for each piece of equipment.
6. Step 6 – Report & Recommendations
   We deliver a comprehensive report including: one-line diagram of the modeled system, input data summary (transformer, cable, motor data), short circuit results (fault current schedule), load flow results (voltage profile, loading table), motor starting results (voltage dip profile), protection coordination (TCC plots, recommended settings), arc flash labels, prioritized recommendations for upgrades (remedial action plan with cost estimates), and compliance statements (IEC, IEEE, PEC).

Why Pakistani Clients Nationwide Choose ACCO for Power System Analysis

Pakistan’s industrial sector—textile mills in Faisalabad, cement plants, steel mills, food processors—all rely on complex electrical systems. Yet many facilities operate with significant risks: breakers underrated for fault current (potential explosion), protection miscoordinated (fault trips entire plant instead of one feeder), poor power factor (utility penalties), and arc flash hazards (worker safety risk). Utilities like LESCO and K-Electric increasingly require short circuit and protection coordination studies before approving new connections or load enhancements. Insurance companies often require arc flash analysis for commercial policies.

ACCO has earned the trust of clients including Meezan Bank (branch UPS systems), Bata (factory power systems), and BUITMS (campus substation analysis). These clients choose us because we provide rigorous analysis and actionable recommendations. We also serve international clients in the UAE, UK, Saudi Arabia, Canada, and the USA who need Pakistani power system analysis expertise for their local projects.

ACCO by the Numbers: Power System Analysis Excellence

The numbers below demonstrate our capability and track record in delivering Power System Analysis services in Pakistan.

• 25+ years of continuous power engineering experience.
• 500+ projects completed including power system analysis.
• 20+ industries served including textile, manufacturing, commercial, utilities.
• 2 major offices (Lahore & Karachi) covering all of Pakistan.
• 5+ countries served outside Pakistan (UAE, UK, Saudi, Canada, USA).
• 100+ power system models built in ETAP/SKM annually.
• 100% IEEE/IEC compliant analysis methods.
• 0 power system failures attributed to incorrectly specified equipment.
• 30% average reduction in nuisance trips after protection coordination recommended.

Frequently Asked Questions About Power System Analysis

1. What is architectural engineering?

Architectural engineering combines building design with engineering principles. For power system analysis, architectural engineering ensures that switchgear rooms have adequate space for equipment upgrades identified in analysis, proper ventilation for heat dissipation, and safe access for arc flash PPE.

2. How do I get a floor plan designed for my house?

Getting a home floor plan design from ACCO is simple. Call us at +92 322 800 0190 or visit our contact page. Share your plot size (e.g., 5 marla, 10 marla, or 1 kanal) and budget. Our team will visit your site in DHA, Bahria, Model Town, or anywhere in Pakistan, take measurements, and provide initial concept sketches within 7–10 days.

3. What is the difference between architectural design and structural engineering?

Architectural design deals with aesthetics and space planning. Structural engineering ensures the building stands safely. For power system analysis, our structural engineers ensure that heavier equipment required after analysis (e.g., larger transformers) can be supported by existing structures.

4. Do you provide 3D walkthroughs?

Yes. We create high-resolution 3D architectural walkthrough videos of electrical rooms with arc flash boundaries overlaid, helping workers understand safe approach distances.

5. What software do you use for power system analysis?

We primarily use ETAP (Electrical Transient Analyzer Program) for industrial and commercial systems. For utility or transmission-level studies, we use DigSILENT PowerFactory. We also use SKM PowerTools for select projects. All are industry-standard, validated platforms accepted by utilities and regulatory bodies.

6. How much does a power system analysis cost?

Costs vary based on system size and study scope. A small commercial building with one transformer, one main switchboard, and 20 feeders: PKR 100,000-200,000 for short circuit + load flow + basic coordination. A large textile mill with multiple transformers, generators, VFDs, and complex protection: PKR 400,000-1,000,000 for full suite (short circuit, load flow, coordination, motor starting, arc flash). The cost is small compared to the cost of a single equipment failure or a worker injury.

7. How long does a power system analysis take?

Typical timeline: Data collection (1-2 weeks depending on client responsiveness), Modeling and simulation (1-3 weeks), Report preparation (1 week), Total: 3-6 weeks for a typical industrial facility.

8. Do I need arc flash analysis if I already have short circuit study?

Yes. Short circuit analysis alone does NOT calculate incident energy. Arc flash analysis requires both short circuit results AND protection clearing times to calculate incident energy (cal/cm²). Without arc flash analysis, you cannot determine required PPE or establish arc flash boundaries. OSHA and local safety regulations increasingly require arc flash analysis.

Ready to Optimize and Protect Your Power System? Contact ACCO Today

Stop guessing. Stop living with hidden risks. ACCO’s Power System Analysis services in Pakistan deliver the engineering insight you need to operate safely and efficiently. Whether you need a short circuit study for a new transformer, a full protection coordination analysis for a textile mill, or an arc flash study for safety compliance, we have the expertise. Our unique ability to deliver everything from architectural drafting of one-line diagrams to 3D architectural walkthrough of electrical rooms to detailed ETAP simulations makes us a trusted partner.

Call us now: +92 322 800 0190 or +923 111 749 849
Email: info@acco.com.pk
Visit our Lahore office: Office 2, 3rd Floor, Bigcity Plaza, Gulberg-III, Lahore (Mon–Sat, 9:00 AM – 6:30 PM)
Karachi office: Contact us for address and appointment.

Request a free consultation for Power System Analysis services in Pakistan →

Explore our power engineering portfolio on our Our Projects page. Learn how our Architectural Engineering team integrates power system recommendations with facility design. See how BIM Modeling helps coordinate electrical rooms. Planning a new facility? Start with our Home Floor Plan Design or visualize your electrical room with Architectural 3D Modeling.

For authoritative information on power system analysis standards, we recommend visiting the Pakistan Engineering Council (PEC), the IEEE for IEEE standards (141, 242, 1584), and the IEC for IEC 60909 (short circuit).

Stop power system guesswork. Start engineering certainty. Contact ACCO today to discuss your analysis needs. Let us show you why we are a trusted choice for Power System Analysis services in Pakistan.