Precise Magnetically Controlled Reactors For Grid Reactive Power Compensation And Voltage Stability
Magnetically controlled reactors (MCR) are variable inductance devices that provide continuously adjustable reactive power compensation for power transmission and distribution systems. Unlike fixed reactors or switched capacitor banks, MCR technology enables stepless voltage regulation and dynamic reactive power control by adjusting the DC bias current in the control winding, which changes the core saturation level and thereby regulates the inductive reactance.
Yulan Transformer manufactures MCR units designed for substation reactive power compensation, transmission line voltage support, and industrial power quality improvement. Our magnetically controlled reactors are built using the same core manufacturing and testing infrastructure as our power transformers and special purpose transformers, including 1200kV impulse testing and 400kV partial discharge free testing capabilities.
As a manufacturer specializing in both transformers and reactors, we also produce integrated MCR-transformer units that combine voltage transformation and inductive reactive power regulation within a single electromagnetic structure, reducing footprint and installation costs for substation projects.
Typical applications include: reactive power compensation in 35kV–110kV substations, dynamic voltage regulation for long transmission lines, harmonic filtering support in industrial networks, and power factor correction for large motor loads and arc furnace installations.
Frequently Asked Questions
What is a magnetically controlled reactor used for?
Magnetically controlled reactors (MCR) are used for dynamic reactive power compensation in substations, voltage regulation on transmission lines, harmonic filtering support in industrial networks, and power factor correction for large motor loads.
Can you supply integrated MCR-transformer units?
Yes. Yulan Transformer manufactures combined units that integrate voltage transformation and inductive reactive power regulation in a single electromagnetic structure, reducing footprint and installation costs for substation projects.
| Parameter | Range |
|---|---|
| Voltage Class | 35kV – 110kV |
| Reactive Power Range | Customizable |
| Control Method | DC Bias Current Adjustment |
| Cooling | Oil-Immersed (ONAN/ONAF) |
| Standards | IEC 60076, GB/T Standards |
| Testing | 1200kV Impulse, 400kV PD-Free Withstand |
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Neutral Grounding Reactor
Jiangshan Yulan Transformer Co., Ltd. designs and manufactures neutral grounding reactors for high-voltage power systems. The reactor is connected between the neutral point of a transformer or shunt reactor and ground. It limits single-phase ground fault current, provides system damping, and helps control resonance overvoltage.
Oil-Immersed On-Load Tap-Changing Arc Suppression Coil
Manufactured by Jiangshan Yulan Transformer Co., Ltd., the Oil-Immersed On-Load Tap-Changing Arc Suppression Coil (Petersen coil) serves 6–66 kV distribution networks. It enables adjustable neutral-point compensation by on-load tap changing and automatic control to reduce capacitive earth-fault current. Inquire, order, or request a quote.
Oil-Immersed Three-Phase Core Series Reactor
Manufactured by Jiangshan Yulan Transformer Co., Ltd., this oil-immersed three-phase core series reactor is used in capacitor bank circuits for reactive power compensation and harmonic filtering. It is connected in series with the capacitor bank. Its fixed inductance limits switching inrush current and, with a selected reactance rate, forms a tuned branch to reduce harmonic amplification and resonance risk.
Oil-Immersed Three-Phase Core Shunt Reactor
Jiangshan Yulan Transformer Co., Ltd. supplies oil-immersed three-phase core shunt reactors for high-voltage power transmission systems. These products feature fixed reactance, the ability to absorb capacitive reactive power, and voltage stabilization capabilities; custom designs are also available. We welcome inquiries, orders, and requests for quotations.
Oil-Immersed Shunt Reactor
Jiangshan Yulan Transformer Co., Ltd. manufactures oil-immersed shunt reactors for high-voltage transmission and distribution systems. The company has produced transformers and reactors since 1999. The BKS/BKD series is a fixed-capacity reactive power absorption device connected in parallel with a bus or transmission line. It absorbs capacitive charging reactive power, limits light-load and no-load overvoltage, and supports voltage distribution along long transmission lines. Single-phase and three-phase designs are available for project-specific requirements.
Oil-Immersed Magnetically Controlled Reactor
The Oil-Immersed Magnetically Controlled Reactor (MCR) is manufactured by Jiangshan Yulan Transformer Co., Ltd., a transformer and reactor manufacturer established in 1999 with production capability up to 110kV class. It regulates reactive power continuously by controlling DC excitation current, which changes core saturation and equivalent reactance. The oil-immersed design uses transformer oil for insulation and cooling, making it suitable for high-voltage, large-capacity dynamic reactive power compensation and voltage stabilization.
Yulan Transformer has an experienced sales team, technical engineers and after-sales support. From inquiry to delivery, we help buyers purchase suitable Magnetically Controlled Reactors with confidence.
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