Sinotech Group provides a wide array of active filters tailored for various electrical systems, from high - voltage transmission and transformation to medium and low - voltage distribution networks. In high - voltage systems, active filters are crucial for maintaining grid stability and power quality over long distances. Sinotech's high - voltage active filters are designed to handle large - scale harmonic distortions caused by industrial loads and power electronics equipment connected to the grid. These filters use advanced power electronics converters and control systems to inject precisely calculated counteracting currents, effectively suppressing harmonics and maintaining the integrity of the high - voltage grid. For medium and low - voltage distribution systems, Sinotech's active filters are more compact and flexible. They can be easily installed in substations, commercial buildings, and industrial facilities to address the harmonic issues arising from local non - linear loads such as computers, lighting systems, and variable - speed drives. The active filters continuously monitor the current and voltage waveforms in the electrical system. When harmonics are detected, they quickly generate and inject the appropriate compensating currents. Sinotech's active filters also feature communication interfaces, allowing for remote monitoring and control. This enables power system operators to manage the filters efficiently, ensuring optimal performance and power quality. By leveraging its partnerships with global power equipment manufacturers like ABB and Schneider, Sinotech can offer a diverse range of active filters that are compatible with different electrical system architectures and standards, providing reliable solutions for power quality improvement across the entire spectrum of electrical systems.