新型光煤互补发电系统动态特性与调峰性能研究

Study on Dynamic Characteristics and Peak Regulation Performance of the New Solar-Coal Complementary Power Generation System

基于某660 MW燃煤发电机组提出了新型光煤互补发电系统,建立了关键设备模型及子系统模型并进行了验证,通过建模仿真的方法对系统动态特性及调峰性能进行了研究。结果表明:配置储热系统后,当太阳辐照强度突降时,系统能在10 min左右恢复平衡且主要参数变化较小;在配置储热时长为10 h的储热子系统后系统能够实现典型日的连续稳定运行;通过配置储热系统和抽汽储热过程,系统负荷范围由198.00~660.00 MW拓宽至187.62~723.13 MW,调峰性能显著提升。

Based on the 660 MW coal-fired generator unit,a new solar-coal complementary power generation system was proposed,and the key equipment model and subsystem model were established and verified.The dynamic characteristics and peak regulation performance of the system were studied by simulation method.Results show that after configuring the heat storage system,the system can restore balance in about 10 minutes with minimal changes in the main parameters.The system can achieve continuous and stable operation on typical daily after configuring a thermal storage subsystem with a storage duration of 10 hours.By the configuration of heat storage system and extraction steam storage process,the load range of the system is expanded from 198.00-660.00 MW to 187.62-723.13 MW,and the peak regulation performance is significantly improved.