As the energy landscape evolves, the integration of renewable sources has intensified the need for reliable power generation, particularly during peak demand periods. A recent study led by LI Yanbing from Guoneng Jinjie Energy Co., Ltd. explores an innovative approach to enhance the performance and economics of ultra-supercritical coal-fired power plants. The research, published in ‘发电技术’ (translated as ‘Power Generation Technology’), delves into the potential of high-level turbine layouts under load-cycling conditions.
The study addresses a pressing challenge: how to maintain grid stability amidst the increasing variability of renewable energy sources. Coal-fired power plants, often seen as traditional and less environmentally friendly, are poised to play a crucial role in this transitional phase by providing essential peak shaving services. “Our findings indicate that by optimizing turbine layouts, we can significantly enhance the efficiency and economic viability of these plants,” LI stated.
The research employs advanced exergy and exergy economic models to assess the performance of these power plants. The results are promising; the exergy efficiency of high-pressure turbines can be markedly improved, which not only boosts performance but also reduces operational costs. The study reveals that the cost of electricity generated with this high-level turbine layout stands at an impressive 0.3324 yuan per kilowatt-hour, making it an attractive option for energy providers looking to balance cost with efficiency.
Furthermore, the analysis shows that as the load increases, the exergy price of electricity generation decreases. This dynamic suggests that operators can optimize their plants for higher loads to improve profitability while contributing to grid stability. “This model not only helps in reducing costs but also aligns with the global push for energy-saving and emission-reduction strategies,” LI added.
The implications of this research are substantial for the energy sector. By enhancing the economic viability of coal-fired power plants, the findings could lead to a resurgence in their use, particularly in regions where renewable energy sources are still developing. This could create a more balanced energy portfolio that leverages both traditional and renewable resources, ultimately supporting a smoother transition to a sustainable energy future.
As the industry grapples with the dual challenges of transitioning to cleaner energy while maintaining reliability, LI’s work represents a pivotal step forward. The insights gained from this study could inform future designs and operational strategies in thermal power generation, ensuring that coal-fired plants remain relevant in an increasingly renewable world.
For more information on LI Yanbing’s work, you can visit Guoneng Jinjie Energy Co., Ltd..
