【摘要】 介绍使用电压预测技术提高 HVDC混合实时仿真系统接口的稳定性。接口稳定性是建立混合实时仿真系统的关键问题。利用电压预测技术 ,结合“虚”阻尼并联支路 ,可以有效地减小接口电流噪声 ,提高 RTDS数值计算稳定性 ,保证数模接口在稳态和暂态仿真中的稳定。各 AC/DC接口的电压预测步长需独立精心选择 ,典型值在 1个～ 3个步长 ,取决于直流平波电抗值的大小和直流输电线的长度。文中给出了接口的技术实现和性能校验结果。更多还原

【Abstract】 In order to enhance the interface stability of HVDC hybrid real- time sim ulator,a voltage prediction m ethod is presented.The interface stability is critical to establish a hybrid real- tim e sim ulator.Combined with dumm y damping parallel circuit,the voltage prediction can eliminate partially the sam pling tim e delay of input and output data transfer thus resulting in current noise reduction and a numerical stability im provement,which can achieve an overall simulation stability in steady and transient states.The AC and DC interface prediction time steps must be selected individually and carefully.The typical values are selected from 1to 3tim e steps,depending on the size of the DC sm oothing reactor and the length of the DC line. The technical realization of interface and its performance verification results are given.更多还原