Influence of Delay Analysis and Research on The Thermal Power Unit's PFC Performance

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Li, Jun^1^2 ; Liao, Dapeng^3 ; Yang, Pengwei^2 ; Gao, Song^1 ; Lin, Bo^1

State Grid Shandong Electric Power Research Institute, Jinan, China^1

State Grid East Inner Mongolia Electric Power Research Institute, Hohhot, China^2

State Grid Shandong Electric Power Company, Jinan, China^3

关键词: Control structure;    Existing problems;    Laboratory simulation;    Power supply frequency;    Primary frequency control;    Stable operation;    Thermal power units;    Two directions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042102/pdf
DOI  :  10.1088/1755-1315/295/4/042102

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Primary frequency control(PFC) of thermal power unit is an important means to ensure power supply frequency and safe and stable operation of power grid. Through the analysis and research of the PFC standard of the power grid, combined with the control structure of conventional thermal power units, it is pointed out that the delay and inertia inherent in the unit equipment have a negative impact on the PFC performance. From two directions of field dynamic test and laboratory simulation, existing problems of currently widely used control structures are clearly defined, and the technical means of reducing the influence of delay on PFC are proposed. The practical application results show that the proposed method can effectively reduce the overshoot of the PFC system and ensure that the system recovers quickly and stably.