The novel power system contains a large number of new energy sources and power electronic devices,resulting in a lack of inertia support for the system and thus affecting its frequency dynamic characteristics.As a clean,efficient and stable power source,solid oxide fuel cell(SOFC)can provide a certain inertia support for the system.In order to im-prove the frequency dynamic characteristics of the system,a control strategy of SOFC rotational inertia adaptive model prediction virtual synchronous generator(VSG)is proposed.Firstly,the frequency regulation mechanism of the synchro-nous generator is clarified according to its rotor equations of motion.Secondly,the relationship between the frequency change rate and the rotational inertia is analyzed to determine the appropriate adaptive control method of the rotational inertia.Then,model prediction rolling optimization is added to compensate the input active power of the VSG,and the corrected active power is fed forward to the SOFC to make it to quickly respond to the load changes.Finally,the effec-tiveness of the proposed method for system frequency regulation is verified by simulation and experiments.
关键词
新型电力系统/固体氧化物燃料电池/虚拟同步机/转动惯量/自适应控制/模型预测控制
Key words
novel power systems/solid oxide fuel cell/VSG/rotational inertia/adaptive control/model predictive control
维普
万方数据