In this paper,we develop a multi-scalar auxiliary variables(MSAV)scheme for the Cahn-Hilliard Magnetohydrodynamics system by introducing two scalar auxiliary variables(SAV).This scheme is linear,fully decoupled and un...In this paper,we develop a multi-scalar auxiliary variables(MSAV)scheme for the Cahn-Hilliard Magnetohydrodynamics system by introducing two scalar auxiliary variables(SAV).This scheme is linear,fully decoupled and unconditionally stable in energy.Subsequently,we provide a detailed implementation procedure for full decoupling.Thus,at each time step,only a series of linear differential equations with constant coefficients need to be solved.To validate the effectiveness of our approach,we conduct an error analysis for this first-order scheme.Finally,some numerical experiments are provided to verify the energy dissipation of the system and the convergence of the proposed approach.展开更多
为保证国家电网公司750kV示范工程1500MVA满负荷试验顺利进行,利用BPA程序计算750kV示范工程1500MVA试验方式下的系统稳定性;提出在公伯峡电厂1～5号发电机励磁系统配置电力系统稳定器(power system stabilizer,PSS)改进系统阻尼;分析...为保证国家电网公司750kV示范工程1500MVA满负荷试验顺利进行,利用BPA程序计算750kV示范工程1500MVA试验方式下的系统稳定性;提出在公伯峡电厂1～5号发电机励磁系统配置电力系统稳定器(power system stabilizer,PSS)改进系统阻尼;分析发电机自并励系统对系统稳定影响的原理以及公伯峡电厂1～5号发电机PSS参数整定试验结果,并用BPA程序重新对公伯峡电厂发电机配置PSS参数后的试验系统进行了稳定计算分析,结果表明试验系统静态稳定极限大于1800MW,为1500MVA满负荷试验提供了技术保证;最后给出了750kV示范工程1500MVA满负荷试验分析结论。展开更多
基金the Special Fund of the National Basic Research Program of China (2004CB217906)the National HI-Tech Research and Development Program of China (2006AA03Z209).
基金Research Project Supported by Shanxi Scholarship Council of China(2021-029)International Cooperation Base and Platform Project of Shanxi Province(202104041101019)Basic Research Plan of Shanxi Province(202203021211129)。
文摘In this paper,we develop a multi-scalar auxiliary variables(MSAV)scheme for the Cahn-Hilliard Magnetohydrodynamics system by introducing two scalar auxiliary variables(SAV).This scheme is linear,fully decoupled and unconditionally stable in energy.Subsequently,we provide a detailed implementation procedure for full decoupling.Thus,at each time step,only a series of linear differential equations with constant coefficients need to be solved.To validate the effectiveness of our approach,we conduct an error analysis for this first-order scheme.Finally,some numerical experiments are provided to verify the energy dissipation of the system and the convergence of the proposed approach.
文摘为保证国家电网公司750kV示范工程1500MVA满负荷试验顺利进行,利用BPA程序计算750kV示范工程1500MVA试验方式下的系统稳定性;提出在公伯峡电厂1～5号发电机励磁系统配置电力系统稳定器(power system stabilizer,PSS)改进系统阻尼;分析发电机自并励系统对系统稳定影响的原理以及公伯峡电厂1～5号发电机PSS参数整定试验结果,并用BPA程序重新对公伯峡电厂发电机配置PSS参数后的试验系统进行了稳定计算分析,结果表明试验系统静态稳定极限大于1800MW,为1500MVA满负荷试验提供了技术保证;最后给出了750kV示范工程1500MVA满负荷试验分析结论。
