百万千瓦级核电机组汽轮机一次调频设计优化研究

Optimization of primary frequency regulation design of nuclear power turbine

目前国内多个二代加核电采用ALSTOM公司的P320 V2+汽轮机控制系统,其一次调频参数与电网要求及汽轮机组特性还存在着一定的矛盾,且未设置针对电网对核电一次调频考核情况制定应对策略。通过基于ALSTOM百万千瓦调速系统的控制模式介绍,结合核电厂的特性,分析核电汽轮机调速参数对核电机组运行可能造成的风险,并针对性地提出一分钟增量调频逻辑优化的建议及针对反应堆及汽机的相关保护设置一次调频退出逻辑。

At present, many second-generation nuclear power plants in China adopt Alstom’s P320 V2 + steam turbine control system. There are still some contradictions between the primary frequency regulation parameters and the requirements of the power grid and the characteristics of the steam turbine unit, and there is no response strategy for the assessment of the primary frequency regulation of nuclear power by the power grid. Based on the introduction of the control mode of ALSTOM million KW speed regulation system, combined with the characteristics of nuclear power plant, this paper analyzes the possible risks caused by the speed regulation parameters of nuclear power turbine to the operation of nuclear motor unit, and puts forward suggestions on the optimization of one minute incremental frequency regulation logic and the setting of primary frequency regulation exit logic for the relevant protection of reactor and steam turbine.