南方电网储能联合火电调频技术应用

In order to better guide the construction and application of energy storage combined with thermal power frequency modulation projects and promote the development of the auxiliary frequency modulation market in southern China, the construction and operation of energy storage combined with frequency modulation projects in China Southern Power Grid are expounded. The frequency modulation benefits of the energy storage system and its impact on the stability of the power grid system are analyzed with emphasis. The main conclusions drawn are as follows: The energy storage system has basically no impact on the shaft torsional vibration mode of the unit, the function of the power system stabilizer, and the primary frequency modulation. After adopting resonance suppression technologies such as repetitive control, the harmonic content of the energy storage can be controlled below 1%. The energy storage combined with frequency modulation can significantly improve the comprehensive frequency modulation performance index and frequency modulation mileage of the unit, increase the compensation income of the frequency modulation mileage, and the economic benefits are considerable.

为更好地指导储能联合火电调频工程的建设应用,推动中国南方区域辅助调频市场的发展,阐述了中国南方电网储能联合调频工程建设和运行情况,重点分析了储能系统调频效益及对电网系统稳定的影响,得出的主要结论是:储能系统对机组的轴系扭振模态、电力系统稳定器功能、一次调频等基本无影响,采用重复控制等谐振抑制技术后储能谐波含量能控制在1%以下。储能联合调频能显著提高机组综合调频性能指标和调频里程,增加调频里程补偿收益,经济效益可观。