CAJ | 학술논문

为了给加速功率型电力系统稳定器(PSS2A)现场试验提供参考整定值，减少反复试验对发电机及电力系统的影响，使励磁控制器在低频振荡下具有较好的鲁棒性，提出一种基于加速功率信号拟合的在线整定的方法。运用TLS-ESPRIT算法对PSS2A加速功率信号进行拟合得到系统的相频特性，根据留数法算出PSS2A超前环节需要补偿角度的整定参数。利用该方法对南方电网某水电厂机组实测数据进行建模仿真，与现场采用频谱仪测量计算得到的整定值进行仿真比较分析。数值仿真及实例分析表明该方法得到的整定参数具有较好的参考价值，可给现场调试带来方便。
위료급가속공솔형전력계통은정기(PSS2A)현장시험제공삼고정정치，감소반복시험대발전궤급전력계통적영향，사려자공제기재저빈진탕하구유교호적로봉성，제출일충기우가속공솔신호의합적재선정정적방법。운용TLS-ESPRIT산법대PSS2A가속공솔신호진행의합득도계통적상빈특성，근거류수법산출PSS2A초전배절수요보상각도적정정삼수。이용해방법대남방전망모수전엄궤조실측수거진행건모방진，여현장채용빈보의측량계산득도적정정치진행방진비교분석。수치방진급실례분석표명해방법득도적정정삼수구유교호적삼고개치，가급현장조시대래방편。
An online setting method based on fitting with rotational power signal is proposed to provide a reference setting value of improved rotational speed power system stabilizer (PSS2A) in field tests, which reduces the repeated tests’ impact on the generator and the power system, enables the excitation controller has robustness in the situation of low-frequency oscillation. The TLS-ESPRIT algorithm is used in the method to fit the accelerating power signal of PSS2A and get the phase frequency characteristics of the system. The residue method is required to calculate the angle to be compensated of lead link in PSS2A. The measured data of a hydropower plant in CSG is simulated by using this method, and the simulation result is compared with the setting value calculated by spectrum analyzer in the field. Numerical simulation and test analysis prove that the setting value obtained by this method has a better reference value, which brings a convenience to the field debugging.