Power & SitesUnited States
Hyosung Heavy Industries Builds 2-GW HVDC Test System
Hyosung Heavy Industries has built a 2-gigawatt (GW) high-voltage direct current (HVDC) performance testing system using its own technology. The company’s official English name is Hyosung Heavy Industries.
Hyosung Heavy Industries said Oct. 8 that it has completed a hardware-in-the-loop simulation (HILS) system to verify the performance and stability of its in-house developed HVDC controller.
HVDC is a technology that converts electricity into direct current for long-distance transmission. It is suited to transmitting large amounts of power over long distances and enables precise control of power flows. An HVDC controller regulates the operation of converter valves that convert power between alternating current and direct current.
As HVDC transmission capacity increases, the systems and operating conditions that need to be controlled become more complex, increasing the number of scenarios that must be verified. A 2-GW system has two to three times as many operating scenarios to test as an existing 200-megawatt (MW) system, making extensive validation necessary before deployment on the power grid.
HILS is a technology that connects physical hardware to a virtual system to verify its performance. It allows users to simulate desired operating environments and conduct various tests indoors. Hyosung Heavy Industries connected an actual HVDC controller to a virtual 2-GW converter valve and power grid. It repeatedly tested faults and emergency conditions that would be difficult to reproduce on an actual power grid.
Hyosung Heavy Industries secured technology covering the entire HILS development process, including system design, installation, testing and operation. The company applied its experience operating and controlling a 200-MW voltage-source HVDC system installed at Yangju Substation in 2024 to the design of the 2-GW test environment.
A Hyosung Heavy Industries official said the HILS system is significant because it provides the company with an independent technological foundation for advancing its HVDC controllers.