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Power System Analysis

Professionals you can rely on to get your high voltage project delivered safely, on time, and within budget

Our power system engineering team provides a wide range of services, including Load Flows, Short-Circuits, Protection Grading, Arc Flash assessment, Motor Start-up, and Harmonic and Dynamic Transient switching studies for large-scale power generation facilities.

 

Integral Power is a leading provider of power systems consultancy. We offer a wide range of steady-state and dynamic Power Systems Analyses that precisely target our client’s needs and requirements.

We deploy a systematic engineering approach to all high voltage power system issues ranging from enhancing existing power systems to identifying inefficient system designs, incorrect equipment selections & potential equipment compatibility issues. Our analysis and diagnosis guard against improper system operation and possible catastrophic losses and failures.

Our power systems engineers are veterans who have worked on various high voltage projects across a broad range of industries. They utilize specialized simulation software packages and leverage their skills and experience to deliver effective, practical, economical, and sustainable high voltage solutions.

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1300 206 964

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Power system analysEs

Our traditional power system analysis offerings include the following:
Short Circuit Studies
Load Flow
Studies
Earthing
Design
Protection Coordination
Motor Starting Studies
Harmonic
Studies
Power Quality Surveys
Field Harmonic Measurements
Arc Flash
Studies
Stability
Analysis
Dynamic
Studies
Transient
Analysis

RECENT PROJECTS

From commissioning Utility-scale Renewable Generation to Mission Critical High Voltage Power networks, Integral Power has been at the forefront in the power industry, Leveraging High Voltage Expertise to create value for customers.

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TRANSFORMER ASSEMBLY

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Commissioning & Energization

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Commissioning & Energization

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Commissioning & Energization

NEVERTIRE SUBSTATION
NEVERTIRE SUBSTATION
NEVERTIRE SOLAR FARM
NEVERTIRE SOLAR FARM
SUNRAYSIA SOLAR FARM
SUNRAYSIA SOLAR FARM
CROOKWELL WIND FARM
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Short Circuit Analysis

 

Integral Power uses world’s leading software tools to quantify the magnitude of fault currents throughout your electrical network. We compare the interrupting duties of existing/new electrical equipment on your network to the available prospective fault current and give you actionable recommendations which will allow you to choose new equipment, replace or modify your existing assets in order to comply with all applicable codes and standards.

Integral Power’s Short Circuit analysis report will help you: 

  • Determine your system’s response under fault conditions
  • Obtain detailed IEC 60909 compliant short circuit calculations
  • Verify equipment duty ratings under fault conditions

LOAD FLOW ANALYSIS

Integral Power’s Load Flow studies analyze the power system’s capability to supply the connected load under steady-state conditions. It is used to determine appropriate continuous rat¬ings of electrical equipment and the optimum location and characteristics of reactive power compensation equipment where required.
By deploying some of the world’s most advanced power system analysis tools, including EtapTM and EasyPowerTM, our engineers will give you actionable recommendations to appropriately rate and specify substation equipment and replace or modify your network to comply with all applicable codes and Australian standards.

Our Load Flow analysis report, you will: 

  • Obtain insight into your system MWs, MVAR flows, Voltages, and Current profiles.
  • Detect and resolve overloads, voltage violations, and other problems.
  • Reduce energy costs by optimizing system efficiency.
  • Gain relevant insights for designing, troubleshooting, and optimizing your system.

Earthing System Design

Earthing system design requires a comprehensive understanding of causes that can influence the performance of an earthing system under fault conditions. Our engineers are experienced in implementing IEEE-80 and AS/NZS-2067 compliant earthing designs; they are also proficient in using some of the world’s most capable earthing design software, including CDEGS¬TM and XGSLABTM.

Our Earthing Design report will include the following:

  • Earth grid calculations and design, including soil analysis.
  • Earthing systems performance in both uniform or double-layered soil models.
  • Professional numerical and graphical results of Earth Potential Rise (EPR).
  • Analysis of Leakage currents & Surface potential.
  • Step and Touch voltage distribution across your earthing system
  • Minimum conductor sizing

Protection Device Coordination Analysis

At Integral Power, we will determine your protective devices’ settings and ratings, such as Protection relays, CBs, and Fuses across your power system. These settings and ratings will be determined by our engineers, who will plot the Time Current Curves (TCCs) of each device and apply AN/NZS, IEEE, and IEC standards to ensure that you get reliable and dependable protection across your power network.

Integral Power’s Protective Device Coordination study will:

  • Provide you detailed relay settings that are to be loaded into your protection relays
  • Ensure that all your valuable assets are protected against electrical damage
  • Help you maintain appropriate coordination between protective devices
  • Increase the reliability of your operations by restricting the fault/overload trips locally

Motor Starting Study

With Integral Power’s Motor Starting Analysis, we precisely calculate starting times, speed, torque, system voltage drops, and relay interactions if large motors switch on within your electrical system. With overloads highlighted, you can avoid unnecessarily tripping your plant while minimizing downtime. Our engineers will simulate real-time plant conditions, including multiple starting motors, switching contactors, and relay tripping, helping you see the implications of changes on the system even before you implement them.

Integral Power’s Motor Starting analysis report will help you:

  • Design, troubleshoot, and optimize complex motors starting with precision.
  • Analyse Motor starting times, Speed, Torque, and System voltage drops. 
  • Recommend solutions for resolving overloads and voltage violations. 
  • Recommend optimum protection relay settings, transformer tapings, and capacitor switching.

Harmonic Analysis

Harmonic studies are performed to determine the effects of non-linear electrical devices (such as furnaces, large variable-speed drives, static VAR compensators, and DC rectifiers) on the electrical network. Harmonic studies are typically associated with installing Variable Speed Drives (VSDs) and capacitor/reactor banks and designing and evaluating the performance and effectiveness of harmonic filter banks.

With our Harmonic Analysis, you will help you:

  • Analyse harmonic Currents, Voltages, and interference to IEEE-519.
  • Add power-factor correction while avoiding harmonic resonance.
  • Simulate multiple operating conditions.
  • Model Harmonic Filters and verify the proper design and acceptable mitigation.
  • Avoid costly downtime and equipment damage due to harmonic voltages and currents.

Power Quality Surveys

Integral Power’s Power Quality surveys evaluate the equipment malfunction and the incompatibility between the source of power and the load. This ensures the powering and earthing of sensitive electronic equipment in a manner that is suitable for the operation of that equipment. Evaluation includes any power disturbance event that has the potential to pose a threat to the continuous operation of the equipment in question. After completion of the site survey, our power systems engineers will use the recorded measurements in the analytical model to identify system problems and recommend the corrective actions required. Recommendations typically include uninterruptible power supplies, power conditioning devices, automatic transfer switches, and standby generators to assist sensitive electronic equipment to ride through power system disturbances.

Field Harmonic Measurements

Our field services engineers are equipped to determine the sources and magnitudes of harmonic currents and voltages in your electrical power system. Measurements are used to verify har¬monic generation from all significant harmonic sourc¬es and demonstrate the effect of system resonance caused by power factor capacitors.

 

Arc Flash Analysis

Arc flash has proved to be a significant risk for the electrical industry in Australia and abroad. Integral Power has one of the most experienced teams of professionally trained arc flash engineers with hands-on experience implementing NFPA-70E and AS/NZS-4836-based arc flash safety systems. Our engineers are certified users of ETAPTM and EasyPowerTM and have a track record of providing comprehensive arc flash safety solutions, including arc flash hazard assessment, determination of arc flash boundaries, and determining hazard risk categories.

With our comprehensive Arc Flash Study, you will:

  • Be able to implement a comprehensive arc flash program.
  • Obtain full IEEE-1584 and NFPA-70E based arc flash calculations.
  • IEEE-1584-based time domain calculations using decaying currents and full dynamic flux models.
  • Know the required PPE levels, arc hazard, and arc boundary requirements.
  • Obtain recommendations for protective device settings for increased safety and compliance.
  • Obtain NFPA-70E and AS/NZS-4836 compliant, self-adhesive arc flash safety labels.

Stability Analysis

Evaluates the dynamic behavior of the generating sources and sys¬tem voltages during transient conditions such as system faults or start-up. Typical recommendations include details of the load shed¬ding scheme, including the sequence of load separation, critical clearing time, and type of relay.

 

 

 

 

Dynamic Simulation Analysis

Our Dynamic Simulation Models simulate the interaction between the power system and controlled devices (inverters, generators, motors, etc.) in response to various system conditions. This analysis is often performed with Integral Power’s design services for power generation and battery storage systems. The study results are used to modify control parameters and enhance system design.

Switching Transient Analysis

Analyses the power system’s behavior during switching conditions to identify possible damaging voltage transients. An insulation coordination study comparing surge arrester ratings with equipment BIL will be completed to recommend the required surge protection system for the investigated circuit. Results are used to design and specify mitigation methodologies and equipment, such as applying snubbers.