该文针对质子交换膜(proton exchange membrane,PEM)电解槽负荷安全快速响应电力系统频率控制难题,提出考虑氧中氢含量的PEM电解槽非线性频率动态响应控制策略。首先,基于质量守恒方程、能量守恒方程、阴阳极压强方程以及小室U-I方程建...该文针对质子交换膜(proton exchange membrane,PEM)电解槽负荷安全快速响应电力系统频率控制难题,提出考虑氧中氢含量的PEM电解槽非线性频率动态响应控制策略。首先,基于质量守恒方程、能量守恒方程、阴阳极压强方程以及小室U-I方程建立PEM电解槽一维机理动态模型,得到电解槽阳极氧中氢含量的数学解析模型;其次,基于全息目标反馈非线性频率响应控制(nonlinear control with objectiveholographicfeedbacks,NCOHF)理论,提出考虑氧中氢含量的PEM电解槽频率响应策略;最后,利用25%风电渗透率的4机2区仿真系统在负荷阶跃及风电功率波动工况进行频率响应分析,验证该文方法相较于传统下垂、加速下垂和频率变化率控制在频率动态响应方面的优越性。展开更多
Based on some assumptions,the dynamic governing equation of anchorage system is established.The calculation formula of natural frequency and the corresponding vibration mode are deduced.Besides,the feasibility of the ...Based on some assumptions,the dynamic governing equation of anchorage system is established.The calculation formula of natural frequency and the corresponding vibration mode are deduced.Besides,the feasibility of the theoretical method is verified by using a specific example combined with other methods.It is found that the low-order natural frequency corresponds to the first mode of vibration,and the high-order natural frequency corresponds to the second mode of vibration,while the third mode happens only when the physical and mechanical parameters of anchorage system meet certain conditions.With the increasing of the order of natural frequency,the influence on the dynamic mechanical response of anchorage system decreases gradually.Additionally,a calculating method,which can find the dangerous area of anchorage engineering in different construction sites and avoid the unreasonable design of anchor that may cause resonance,is proposed to meet the seismic precautionary requirements.This method is verified to be feasible and effective by being applied to an actual project.The study of basic dynamic features of anchorage system can provide a theoretical guidance for anchor seismic design and fast evaluation of anchor design scheme.展开更多
文摘该文针对质子交换膜(proton exchange membrane,PEM)电解槽负荷安全快速响应电力系统频率控制难题,提出考虑氧中氢含量的PEM电解槽非线性频率动态响应控制策略。首先,基于质量守恒方程、能量守恒方程、阴阳极压强方程以及小室U-I方程建立PEM电解槽一维机理动态模型,得到电解槽阳极氧中氢含量的数学解析模型;其次,基于全息目标反馈非线性频率响应控制(nonlinear control with objectiveholographicfeedbacks,NCOHF)理论,提出考虑氧中氢含量的PEM电解槽频率响应策略;最后,利用25%风电渗透率的4机2区仿真系统在负荷阶跃及风电功率波动工况进行频率响应分析,验证该文方法相较于传统下垂、加速下垂和频率变化率控制在频率动态响应方面的优越性。
基金Projects(51308273,41372307,41272326)supported by the National Natural Science Foundation of ChinaProject(20090211110016)supported by Specialized Research Fund for the Doctoral Program of Higher Education of ChinaProject(2010(A)06-b)supported by Science and Technology Fund of Yunan Provincial Communication Department,China
文摘Based on some assumptions,the dynamic governing equation of anchorage system is established.The calculation formula of natural frequency and the corresponding vibration mode are deduced.Besides,the feasibility of the theoretical method is verified by using a specific example combined with other methods.It is found that the low-order natural frequency corresponds to the first mode of vibration,and the high-order natural frequency corresponds to the second mode of vibration,while the third mode happens only when the physical and mechanical parameters of anchorage system meet certain conditions.With the increasing of the order of natural frequency,the influence on the dynamic mechanical response of anchorage system decreases gradually.Additionally,a calculating method,which can find the dangerous area of anchorage engineering in different construction sites and avoid the unreasonable design of anchor that may cause resonance,is proposed to meet the seismic precautionary requirements.This method is verified to be feasible and effective by being applied to an actual project.The study of basic dynamic features of anchorage system can provide a theoretical guidance for anchor seismic design and fast evaluation of anchor design scheme.
