CAJ | 학술논문

针对Prony算法抑噪能力差、计算效率低的问题，分析Prony算法的原理和主要参数的选择策略，提出一种基于Prony算法的发电机组间功率低频振荡在线辨识新方法，从模型有效阶数确定、AR参数估计、数据预处理等方面说明该方法的计算步骤，通过算例仿真及结果分析，认为该方法能够满足电力系统低频振荡在线辨识的需要。
침대Prony산법억조능력차、계산효솔저적문제，분석Prony산법적원리화주요삼수적선택책략，제출일충기우Prony산법적발전궤조간공솔저빈진탕재선변식신방법，종모형유효계수학정、AR삼수고계、수거예처리등방면설명해방법적계산보취，통과산례방진급결과분석，인위해방법능구만족전력계통저빈진탕재선변식적수요。
As the traditional algorithm is sensitive to noise and has ineffective calculation ,the basic principle of Prony algo-rithm is introduced in this paper ,a new Prony method for on-line analysis of low-frequency oscillations between power gen-erators is discussed in this paper .The calculation steps of the method are described by way of the identification of the practi-cal order of the model ,estimation of the parameters and the preprocess of the signal .The simulation results show that this method can meet the needs of low-frequency oscillations online identification .