Power Quality Studies, Harmonic Solutions
Power Quality Studies, Harmonic Analysis & Solutions
"Power Quality (PQ) is a highly newsworthy issue"
Increasing use of semiconductor based electronic equipment & non-linear loads (such as SMPS used in computers & their peripherals, data servers, variable speed drivers (VFD), arc furnaces, LED lights etc.) and rapid integration of non-conventional energy sources into grid network throws new challenges for the PQ environment.
The characteristics of electricity like frequency, magnitude, waveform, and symmetry are subject to variations during the normal operation in a supply system due to changes of load, disturbances generated by certain equipment and the occurrence of faults which are mainly caused by external events. Sometimes the equipment installed at the premises of an electricity user can inject disturbances (e.g. harmonic or inter-harmonic distortion, voltage fluctuations etc.) into the distribution networks.
These power quality issues may affect end users, equipment & system manufacturer, designers of plants & installations, electricity distributors, public authorities and the public. The outcome of some surveys has revealed significant losses to industries due to poor power quality. Variation in voltage & frequency and waveform distortion (in other words harmonics) are the critical power quality issues.
Emicon offers a broad range of engineering services in power quality such as:
1. Site surveys, on-site power quality data logging using Fluke instrument, harmonic analysis and recommendations.
2. Detailed study of reactive power, power factor and existing harmonic pattern in the electrical system.
3. Design & recommend optimal solutions based on measured project data. Simulation of the electrical network, the system using ETAP software and carrying out harmonic penetration studies.
4. Solutions to improve power factor and mitigate harmonics as per IEEE 519 standards.
5. Implementing the recommended solutions and verifying the results by doing re-analysis to ensure optimized system performance with the fastest payback.
6. Turnkey PQ project; design, installation, programming, testing and commissioning of harmonic mitigation equipment such as active and passive harmonic filters, SVG’s etc.
7. Review, approval and procurement advice of different manufacturers’ PQ equipment such as AHF, SVG, Capacitor Bank etc. including comparison study by meeting the requirements of the project, client and local authority’s regulations and Int’l standards.
Power System Network Simulation Studies Using ETAP 22.5 Software
ETAP (Electrical Transient Analyzer Program) software is a comprehensive platform used for modeling, simulating, analyzing, and optimizing electrical power systems. Emicon Engineers use ETAP 22.5 version to perform a wide variety of simulation studies to ensure system reliability, safety, efficiency, and compliance with industry standards.
Key power system network simulation studies performed using ETAP 22.5 software include:
- Core Power System Studies: Load Flow Analysis (Power Flow), Short Circuit Analysis (Fault Study), Protective Device Coordination and Selectivity.
- Dynamics and Transients Studies: Transient Stability Analysis, Motor Starting Analysis (Acceleration), Harmonic Analysis and Electromagnetic Transients (EMT) Analysis.
- Safety and Equipment Evaluation Studies: Arc Flash Hazard Analysis, Cable Ampacity and Sizing, Ground Grid Design and Analysis.
- Optimization and Planning Studies: Reliability Assessment, Contingency Analysis, Renewable Energy Integration Studies and Optimal Power Flow.
Emicon's team includes trained ETAP certified electrical engineers carrying out the above studies.
On-Site Measurement & Power Quality Studies
Emicon's on-site measurements and PQ studies is the process of gathering, analyzing, and interpreting raw measurement data into useful information. The process of gathering data is usually carried out by continuous measurement of voltage and current over an extended period. The process of analysis and interpretation has been traditionally performed manually, but recent advances in signal processing and artificial intelligence fields have made it possible to design and implement intelligent systems to automatically analyze and interpret raw data into useful information with minimum human intervention.
Power Quality measurement devices used for PQ measurements are Harmonic Analyzers, Transient-disturbance Analyzers, Oscilloscopes, Data Loggers and Chart Recorders.
The findings of the power quality measurements and recommendations for possible solutions, if so required, are presented in post-measurement power quality report.
Supply, Installation, Testing & Commissioning of Detuned Capacitor Banks & Active Harmonic Filters
Emicon deals with customized solutions for power factor improvement and harmonic suppression systems namely:
- Active Harmonic Filter (Power Filter) panels for Harmonic Suppression up to 600Amp.
- Detuned Capacitor Banks (CB) and Thyristor Switched Detuned Capacitor Banks (TSCB) upto 700kvar for P.F Correction.
We supply, install, testing and commissioning of detuned capacitor banks, thyristor switched capacitor banks for reactive power compensation and to maintain good power factor in the power network ideally > 0.95 lag as stipulated by the Utility Authorities.
Types of Harmonic Filters:
Passive Filters (Detuned Capacitor Banks): These are the most common type and are built using passive components like capacitors, inductors, and resistors. They are often tuned to filter specific frequencies and are simple and reliable.
Active Filters (Active Harmonic Filters): These use modern power electronics, such as transistors and diodes, to actively inject a current that cancels out the harmonic currents. They are more dynamic, can address a wider range of harmonics, and are often used in applications with harsh electrical conditions or critical equipment.
Why harmonic suppression is important?
Protects equipment, Increases stability, Improves efficiency and Ensures compliance.
Seminar, Workshop and Training
We conduct technical seminars, workshops and training in various areas of Engineering, Power Quality and Power systems. For more details, please download our brochure by pressing the link below or contact us directly for a presentation.
For more queries on Power Quality, head over to its FAQ page.
