Introduction: In 3 to 35kV power systems, the extensive use of inductive loads often results in low power factors, significant reactive power losses, and penalties imposed by power supply bureaus. Consequently, high-voltage capacitor compensation cabinets have become a staple in power systems. These devices serve to compensate for reactive power, boost power factors, regulate grid voltages, reduce line losses, enhance power supply quality, and optimize the efficiency of power distribution equipment. Capacities can span from hundreds of thousands to tens of thousands of kVAR. The design of these devices takes into account various factors, including main wiring configurations, protection mechanisms, inrush current limitation, and harmonic overload suppression, ensuring safe and reliable operation. Structurally, the devices are compact and user-friendly for both installation and maintenance.
For many years, our company has been dedicated to researching, developing, manufacturing, and applying electric drive systems, power electronics, and power quality solutions. Our product lineup includes high- and low-voltage reactive power compensation filters, high-power motor soft-start devices, variable-speed drives, motor energy-saving controllers, and power quality equipment. These solutions are widely implemented across industries like construction materials, metallurgy, oil, shipbuilding, ports, chemicals, textiles, papermaking, municipal utilities, water supply, and more.
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Features:
Device Quality: We use premium components, such as high-voltage power capacitors, which are highly reliable, long-lasting, low-loss, and feature low operating temperature rises.
Safety & Reliability: The capacitors come equipped with comprehensive safety and discharge mechanisms. Within five seconds after power disconnection, the residual voltage on the capacitor drops below 50V.
Complete Capacitor Protection: Single capacitor short-circuit protection employs blowout fuses, while unbalance protection for capacitor banks may include neutral point unbalanced current protection, open delta voltage protection, and voltage differential protection.
Comprehensive Device Protection: Overcurrent, fast-trip, overvoltage, and undervoltage functions safeguard the equipment's safe operation.
Reactor Selection: A series reactor with a rejection rate of 0.5% to 13% helps limit inrush currents and suppress specific harmonic frequencies.
Intelligence & Flexibility: Automatic switching occurs based on operational conditions. Control methods can be tailored to switch according to power factor, voltage levels, or reactive power needs.
Ease of Operation: Once set up, the device operates autonomously without requiring manual intervention, minimizing human error.
Maintenance-Friendly: The device boasts a simple structure that is robust and durable, reducing the need for frequent part replacements.
Classification:
Based on Compensation Location: High-voltage centralized compensation and on-site compensation.
Based on Compensation Method: Fixed compensation, manual compensation, and automatic compensation.
Based on Voltage Level: High-voltage compensation and low-voltage compensation.
Based on Installation Method: Indoor compensation and outdoor compensation.
Based on Device Type: Cabinet compensation, frame compensation, and column compensation.