Case studies of the technical benefits of active harmonic filters in the audio and video center of North Khorasan (Bojnord)

Case Study: Technical Benefits of Active Harmonic Filter in North Khorasan Broadcasting Center (Bojnourd)

Hoonam Part Energy Company has installed a 15A three-phase Active Harmonic Filter in the Bojnourd Broadcasting Center to improve the quality of the electrical power network. The filter was designed to reduce Total Harmonic Distortion (THD) and enhance the stability of electrical equipment, particularly for nonlinear loads such as the record and encoder systems in the broadcasting hall powered by a UPS. Operating at 400V input voltage with harmonic compensation capability from the 2nd to the 50th order, this system provides an effective solution for sensitive operating conditions. Hoonam Part Energy updated this project on August 6, 2025, reaffirming its commitment to innovation in the electrical industry.

Implementation Process

The Hoonam Part Energy technical team began with an initial assessment of the electrical network and identified nonlinear loads. They determined the Point of Common Coupling (PCC) for filter installation and selected the optimal location. The experts carefully calibrated the device and integrated it with the existing UPS system. Using a Fluke Power Quality Analyzer, the team conducted initial tests and recorded detailed data before compensation. After activating the filter, its automatic adjustment quickly reduced harmonics and stabilized the network.

Harmonic Measurements Before and After Compensation

Hoonam Part Energy Active Harmonic Filter

Hoonam Part Energy has designed and manufactured the PAD series Active Harmonic Filter using advanced technology. This 15A-rated filter with harmonic compensation from the 2nd to the 50th order is specifically developed to enhance power quality in networks with nonlinear loads, such as record and encoder systems in broadcast halls. Its robust design and automatic adjustment ensure stable operation and minimize the detrimental effects of harmonics. The company manufactures these filters using high-quality materials and in compliance with international standards such as IEC 61000-3-2, ensuring durability under harsh conditions.

Results Analysis

The installation of Hoonam Part Energy’s Active Harmonic Filter significantly improves power quality. The filter reduces THDI from high levels (up to 78.5%) to very low levels (1.1–۲.۰%) and THDU from initial levels (up to 90.6%) to acceptable limits (0.5–۳.۳%). This reduction complies with IEEE 519-1992 standards (maximum 5% THD) and optimizes equipment performance. Moreover, the system prevents the failure of recorders and encoders, eliminating equipment damage caused by harmonics. With this success, Hoonam Part Energy demonstrates its capability to implement this technology in other industries such as steel plants and production lines.

Economic Impact

Using an Active Harmonic Filter reduces operational costs by minimizing energy losses caused by harmonics. Bojnourd Broadcasting Center achieves significant electricity savings, while preventing damage to costly equipment such as recorders and encoders drastically reduces maintenance and replacement expenses. Hoonam Part Energy estimates that the project’s return on investment (ROI) will be achieved within two years, ensuring long-term profitability.

User Experience and Feedback

Technical staff at Bojnourd Broadcasting Center reported a significant increase in system stability after the installation of the filter. They no longer experience unexpected shutdowns or frequent equipment failures. The project manager expressed satisfaction with the prompt support and customized solutions provided by Hoonam Part Energy. This positive experience serves as a model for similar projects in other broadcasting centers.

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