High-Voltage Dynamic Filtering and Compensation Device Harmonic Mitigation Solutions
Product Overview
The RWMSVC Series High-Voltage Dynamic Filtering and Compensation Device is designed to optimize power quality by regulating voltage, reactive power, and harmonic levels across high-voltage distribution networks. Traditional capacitor banks and fixed compensation devices rely on discrete switching, often resulting in inadequate compensation accuracy, switching inrush currents, and overvoltage issues. Earlier dynamic solutions such as thyristor-controlled reactors (TCR-type SVC) tend to be expensive, structurally complex, and require significant maintenance.
The RWMSVC series adopts Magnetic-Controlled Reactor (MCR) technology to deliver highly reliable and precise dynamic reactive power compensation. With low harmonic emission, minimal power loss, simplified structure, high reliability, and reduced footprint, MCR-type SVC provides a superior and cost-effective solution for modern power systems.
Key Features
Full digital control based on DSP
Ensures rapid dynamic response with reaction times under 0.1s.Integrated self-diagnosis and protection
Enables real-time monitoring, protective coordination, and remote management.Flexible configuration
Supports multiple control modes and communication interfaces such as fiber-optic transmission, RS485, CAN bus, and Ethernet.High reliability with minimal loss
The current drawn by the control system is less than 1% of the main circuit current.Low harmonic content
Three-phase imbalance and harmonic interference remain very low, with THDI typically under 5%.Modular, standardized construction
Facilitates installation, expansion, and maintenance.MCR core components require no maintenance
The magnetic-controlled reactor structure offers long service life and stable operation.Wide adaptability
Compatible with various grid voltage levels; supports indoor or outdoor installation.Improved system power factor
Achieves post-compensation power factor ≥ 0.95, reducing voltage fluctuation and enhancing system stability.
Operating Conditions
Indoor installation temperature: -5°C to +40°C
Outdoor installation temperature: -40°C to +45°C
Altitude: ≤ 2000 m
Vibration: Free from severe mechanical vibration
Environment: Non-corrosive gases, no conductive dust, no flammable or explosive media
Working Principle of MCR-Type SVC
The MCR-based Static Var Compensator (SVC) consists of three major components:
MCR magnetic-controlled reactor, FC filtering system, and digital control/protection unit.
Magnetic-Controlled Reactor (MCR) Function
The MCR core adjusts its magnetic reluctance through DC excitation.
By regulating the excitation current, the device changes the reactor inductance in real time.
This dynamic inductive control compensates reactive power according to the system’s varying load.
FC Filter System
The FC branch (capacitor + reactor) provides both reactive power support and harmonic filtering.
The filtering circuit absorbs characteristic harmonics produced by nonlinear loads.
Overall Dynamic Regulation Process
When system load changes, the control system calculates compensation demand via DSP.
The excitation current of the MCR is automatically adjusted to match the required reactive power output.
Compensation remains continuous and stepless, ensuring stable voltage and improved power factor across the network.
Combined with FC filtering, the system significantly reduces harmonic distortion without generating switching surges or overvoltage.
Technical Advantages
Stepless dynamic compensation suitable for rapidly changing loads
Extremely low harmonic generation, far less than TCR-type SVC
No switching transients or inrush current
Long service life and minimal maintenance
High reliability even under frequent operational changes
Compact footprint compared with traditional dynamic compensation systems
Ideal for industrial plants, substations, and distribution networks requiring fast and stable reactive power control
