Design and evaluation of voltage control techniques by hierarchical coordination of multiple power converters in low-Voltage DC distribution systems

摘要

This paper focuses on voltage control schemes for low-voltage DC (LVDC) distribution systems that has been studied for electrification of rural sides in South Korea. Telecommunication repeaters on mountain tops can be a good application for LVDC systems because it needs DC power rather than AC and low-voltage distribution can reduce the operation and maintenance costs for distribution network operators (DNOs). However, low-voltage distribution can suffer voltage regulation issues depending on the size of the systems. This paper presents the design concept of multi-agent based hierarchical control schemes for distribution voltage regulation and evaluation of the control performance by simulation studies.