Recent research led by Yao Guo from the School of Electrical and Electronic Engineering at Huazhong University of Science and Technology has unveiled an innovative solution to enhance the efficiency of active distribution networks (ADNs) in mountainous regions. The study, published in the journal Sensors, addresses the unique challenges faced by these networks, which often struggle with integrating renewable energy sources like hydropower and solar due to their radial structure and light loads.
The research introduces a wide-range thyristor-controlled series compensation (TCSC) system designed specifically for mountainous ADNs. This new technology connects sub-networks where renewable energy generation occurs, such as run-of-river small hydropower stations and rooftop photovoltaic systems. The TCSC not only improves power delivery efficiency but also facilitates power reversal, allowing for better management of energy flows. This is particularly crucial in areas where traditional infrastructure is outdated and unable to support the growing demand for renewable energy integration.
Guo’s team has also developed a deep reinforcement learning (DRL)-based optimal operation strategy that maximizes the consumption of renewable energy while minimizing line losses. By leveraging the complementarity of hydropower, photovoltaic systems, and energy storage systems (ESS), this strategy effectively addresses issues like voltage violations and energy curtailment that are prevalent in mountainous distribution networks. Guo emphasizes the significance of their approach, stating, “By coordinating the application of the designed wide-range TCSC with the proposed optimal operation strategy, the integration capacity of renewable energy generation in mountainous distribution networks can be significantly improved.”
The implications for the energy sector are substantial. As countries strive to meet ambitious renewable energy targets, solutions like the one proposed by Guo and his team can facilitate the transition to more sustainable energy systems, particularly in regions that are traditionally underserved. The ability to efficiently harness and distribute renewable energy not only enhances energy security but also opens up commercial opportunities in the development and deployment of advanced grid technologies.
This research highlights a critical step towards modernizing the energy infrastructure in mountainous areas, potentially attracting investments and partnerships aimed at renewable energy projects. The innovative combination of TCSC technology with smart operational strategies could serve as a model for other regions facing similar challenges, making it a noteworthy development in the ongoing shift towards greener energy systems.
