Case Studies of Technical and Economic Benefits of Active Harmonic Filters
Honam Part Energy is a leading company in the field of designing and manufacturing advanced electrical equipment, operating on the principles of innovation, commitment and expertise. The company plays an important role in improving power quality by providing smart solutions for optimizing electrical systems, especially in sensitive industries.
Origin of Harmonics and Its Effects
Harmonics are created in power systems due to the presence of nonlinear elements such as variable speed drives (VFDs), power electronic converters, electric arc furnaces, rectifiers and inverters. In heavy industries, especially in networks with nonlinear loads, this phenomenon causes significant distortion in the voltage and current waveforms and leads to several problems, including undesirable equipment performance, increased energy losses and reduced device service life.
Harmonic measurement table before filter installation
| Location (network) | THDI (%) | THDU (%) |
|---|---|---|
| Before installing the filter (air traffic control center) | ۷۴.۷ | ۹ |
Honam Part Energy Active Harmonic Filter
Honam Part Energy Active Harmonic Filter with a capacity of 100A offers an advanced solution for harmonic control down to 5%, power factor correction and reactive power compensation. These filters, designed based on modern technology, ensure fast response and operation independent of system impedance and prevent resonance. The ability to compensate for harmonics of order 2 to 50 makes them ideal for sensitive industrial applications.
Harmonic measurement table after filter installation
| Location (network) | THDI (%) | THDU (%) |
|---|---|---|
| Before installing the filter (air traffic control center) | ۹.۱۹ | ۱.۵ |
Analysis of Results and Economic Benefits
Installing an active harmonic filter at the Iranian air traffic control center has resulted in a significant reduction in THDU from 9% to 1.5% and THDI from 74.7% to 9.19%. This improvement has increased the power factor from 0.8 to 0.99 and prevented resonance caused by traditional capacitor banks. From an economic perspective, the reduction in annual energy losses by 102 million Rials (including 84 million Rials from reactive power compensation and 18 million Rials from harmonic reduction) and the saving of 166 million Rials in initial costs and electricity penalties have created significant added value. Also, the release of 20% of transformer capacity (equivalent to 400 million Rials in savings) and the reduction in maintenance costs have increased the return on investment.
