【摘要】 以单机对无穷大系统为研究对象,用计算机进行小波分解来定位仿真故障点,求取故障暂态过程的初始电压U及相位q,使系统暂态仿真模型的未知参数由四维),,,(ULRfq降为一维)(Rf从而简化了系统结构,然后利用BP人工神经网络拟合短路故障非线性暂态过程;同时,硬件上利用DSP实时解算系统模型,动态模拟故障试验的暂态过程。更多还原

【Abstract】 This paper analyses the defects of relay testing simulator based on Electronagnetic Transient Program (EMTP) and puts forward the design scheme of portable Real-time Transient Digieal Simulator (RTDS) based on DSP. Combined with a method of using wavelet to locate the transient fault and obtain its initial transient voltage U and phase q. BP neural network is introduced to emulate transient fault progress. The study gives the following results:(I) Decreasing simulator parameters from four dimensions model),,,(ULRfq to one dimension)(Rf;(II)Simplifying algorithm of transient model and improving its real-time characteristic;(III)Simulating dynamically transient fault progress;(IV)Applying DSP into emulator and making (RTDS) portable in size.更多还原