Power System Solutions

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STATCOM improves grid stability and quality by supplying transmission lines with reactive power.

Hyosung Heavy Industries has the largest capacity for a single substation in the world
using the most recent modular multilevel converter (MMC) technology with high efficiency. We offer STATCOM solutions to domestic and international power companies, renewable energy generation business operators, and industrial facilities.

Features and Benefits

We offer specialized solutions based on superior technology.

  • Scalable

    • MMC technology enables large-capacity control, and STATCOM installation with a single capacity of up to 500Mvar is feasible.
  • Economical

    • Comparative to conventional devices, its compact design reduces land use costs by reducing installation area by 50 to 70%.
    • Realizes low loss through optimal design, and reduces life-cycle costs via routine inspection and maintenance.
  • Green Technology

    • Does not generate harmonics, and offers technology with low noise.
    • All STATCOM facilities are capable of interior design, allowing you to avoid complaints even in densely populated areas.
  • Optimized Solution

    • We analyze the system with the user's system environment, temperature, salinity, humidity, and aseismic conditions in mind, and provide customized and optimized solutions.
  • Long-term Customer Service

    • We ensure product lifespan by providing adequate training for substation users and routine inspections.
    • The easily maintained structure of a converter enables rapid recovery in the event of a failure and ensures a high operating rate.
  • Front Engineering

    • Prior to the specification selection process, we propose diverse and integrated optimal system solutions that meet customer requirements on the basis of a vast array of technology foundations.


Discover custom solutions that meet your needs.

  • Power companies

    • Compensation for reactive power of transmission lines of weak systems responsible for long-distance transmission
    • Securing system stability through rapid voltage control in case of failure
    • Improved voltage stability with rapid reactive power supply
    • Reactive power compensation for improved stability of unbalanced loads
    • Improved power transmission capacity of transmission lines
  • Renewable energy development business

    • Compliance with wind farm fault ride-through (FRT) regulations and securing reactive power supply capacity
    • Providing high-speed voltage compensator solution to respond to the Grid Code based on power grid connection
  • Industrial plants

    • Initial start-up current compensation for large motor load
    • Power compensation for unbalanced loads
    • Plant power factor improvement (non-opening method)
    • Flicker suppression of electrical loads with high instantaneous output, such as electric steel furnaces, crushers, and rolling mills
    • Active harmonic filtering


Our track records speak for ourselves.

  • China

    POSCO Zhangjiagang STATCOM Project (steel application)

    • PZSS
    • Zhangjiagang, China
  • Republic of Korea

    Yangju Substation 200Mvar STATCOM Project (for system reinforcement)

    • Korea Electric Power Corporation
    • Yangju, Gyeonggi-do
  • Republic of Korea

    Donghae Substation 400Mvar STATCOM Project (for system reinforcement)

    • Korea Electric Power Corporation
    • Donghae, Gangwon-do
  • Republic of Korea

    Sinchungju Substation 400Mvar STATCOM Project (for system reinforcement)

    • Korea Electric Power Corporation
    • Chungju, Chungcheongbuk-do
  • India

    NP KUNTA STATCOM Project (linkage with renewable energy (PV))

    • PGCIL
    • First STATCOM project in India
  • Republic of Korea

    Shinyeongju Substation 400Mvar STATCOM Project (for system reinforcement)

    • Korea Electric Power Corporation
    • Yeongju, Gyeongsangbuk-do


We adhere to global standards and maintain an environment of the highest quality.

View all certifications


  • CE


  • IEC


  • ISO9001


  • ISO14001


  • ISO45001



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