Research on Safe and Stable Operation Under Lower Load Condition for Coal-fired Power Plant

Key words: 
• lower load condition /
• safety of combustion /
• stability of hydro-power

Abstract: [Introduction] Recently, renewable energy generator capacity greatly increase in power market of China. To absorb renewable energy, coal-fired power plants responsible for power grid peak shaving have become a development trend in the future. Coal-fired power plants, which undertake the task load, will run at low load condition for long time and meet a variety of potentially risk to the safe and stable operation. [Method] Major potential risks were detailed analyzed in this paper, such as safety of combustion, furnace and coal pulverizing system explosion and stability of hydro-power. [Result] Then, main reform technology for safe and stable operation under lower load condition were summarized and discussed from the process system design, operation mode and control system design. This paper proposed systematic solutions of safe and stable operation under lower load condition for coal-fired power plant. [Conclusion] This paper can provide suggestion and reference for implementation of wide-load technical transformation for coal-fired power plants.