How to Achieve High-Voltage Side power factor correction

In the dynamic landscape of power utilities, optimizing energy efficiency and ensuring stable power quality are paramount. Enjoypowers, a trailblazer in power electronics technology, introduces a groundbreaking solution that revolutionizes power factor correction (PFC). Let’s delve into the details of this cutting-edge technique:

The Challenge: Power Factor Correction at High-Voltage Transformer Sides

When utility companies calculate electricity bills, they often assess power consumption and power factor at the high-voltage side of transformers (e.g., 11kV). However, traditional power factor correction methods primarily focus on the low-voltage side. Enjoypowers recognized this gap and engineered an ingenious solution.

The Basics

  • SVG Rating: Enjoypowers’ SVG operates at a rated voltage of 400Vac.
  • High-Voltage CT Installation: The magic lies in installing the SVG’s current transformers (CTs) on the high-voltage side of the transformer. By monitoring the high-voltage current, we achieve low-voltage compensation for power factor.

How It Works

  • High-Voltage Current Sensing: The CTs on the high-voltage side continuously measure the current flowing through the transformer.
  • Real-Time Compensation: Enjoypowers’ SVG dynamically adjusts reactive power compensation based on the sensed current. It ensures that the power factor remains close to unity (1.0).
  • Low-Voltage Benefits: The compensation extends downstream to the low-voltage side, where it significantly improves power factor and reduces energy losses.How to Achieve High-Voltage Side CompensationHow to Achieve High-Voltage Side Compensation
  • Notice:For Delta/Wye transformers, there is a phase angle difference of 30° between the high-voltage side and the low-voltage side. Therefore, it is necessary to set the phase angle of the SVG output current to 30°.Additionally, the CT ratio must also consider the ratio of high-voltage side to low-voltage side voltages. For instance, if the CT turns ratio is 100:5 and the transformer voltage ratio is 10:0.4, then the CT turns ratio set in the SVG should be 100 * 10/0.4:5 = 2500:5.


  • Precision: Enjoypowers’ SVG provides real-time response to load variations, maintaining optimal power factor.
  • Efficiency: By mitigating power quality issues, it enhances overall system efficiency.
  • Modularity: Enjoypowers’ modular design allows scalability and adaptability to varying load conditions.
  • Sustainability: Reduced energy wastage contributes to a greener environment.

Why Choose Enjoypowers’ SVG?

  • Reliability: Our SVG products are rigorously tested and certified (ISO9001, ISO14001, ISO45001, CE, RoHS, CQC).
  • Efficiency: Enjoypowers’ SVG ensures efficient power factor correction, leading to cost savings.
  • Adaptability: Whether for industrial or commercial applications, our SVG adapts seamlessly to diverse scenarios.

Enjoypowers’ SVG: Enjoy your power! 🌟

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