CAJ | 학술논문

研究了简化的电磁暂态电力电子器件应用于机电暂态仿真的可行性。使用MATLAB-SIMULINK的相量算法，将电网中电流电压视为相量，采用滤去直流与谐波分量的隐式梯形法求解相量方程。在相量算法下搭建静止同步补偿装置（STATCOM）模型，对其电流和电压相量进行dq分解，采用PI和前馈解耦控制，通过对风电机组正常情况下的无功补偿以及短路故障下低电压穿越能力的无功支持来验证这种方法的可行性。仿真结果表明，在相量算法下，STATCOM具有快速无功调节的能力，从而验证了简化电磁暂态的STATCOM应用于机电暂态仿真的可行性，也体现出相量算法在大规模电力系统仿真中的精确性和快速性。
연구료간화적전자잠태전력전자기건응용우궤전잠태방진적가행성。사용MATLAB-SIMULINK적상량산법，장전망중전류전압시위상량，채용려거직류여해파분량적은식제형법구해상량방정。재상량산법하탑건정지동보보상장치（STATCOM）모형，대기전류화전압상량진행dq분해，채용PI화전궤해우공제，통과대풍전궤조정상정황하적무공보상이급단로고장하저전압천월능력적무공지지래험증저충방법적가행성。방진결과표명，재상량산법하，STATCOM구유쾌속무공조절적능력，종이험증료간화전자잠태적STATCOM응용우궤전잠태방진적가행성，야체현출상량산법재대규모전력계통방진중적정학성화쾌속성。
ABSTRACT:To study electromagnetic transient power elec-tronic device in electromechanical transient simulation,a sim-plified phasor model is proposed in this paper. Based on MATLAB-SIMULINK phasor algorithm,the simulation regards current and voltage values as phasors,and uses the implicit trapezoid method with filtered DC and harmonic components to solve phasor equations. In the phasor algorithm,a STATCOM model is built,and PI and feedforward decoupling control are used to implement reactive compensation of the variable pitch induction generators to verify feasibility of the phasor model. The results show that STATCOM has the ability of fast reactive power regulation, so the simulation verifies validity of the proposed method and also reflects the accuracy and quickness of the phasor algorithm in the large power system simulation.