发电机模型及参数动态仿真准确度的评估  

Accuracy Assessment of Models and Parameters in Generator Dynamic Simulation

作　　者：潘雪冬[1] 张文朝[1] 顾雪平[1] 

机构地区：[1]华北电力大学电气与电子工程学院,保定071003

出　　处：《电力系统及其自动化学报》2015年第2期64-69,共6页Proceedings of the CSU-EPSA

摘　　要：动态仿真元件模型及参数不准确会导致仿真结果出现很大的偏差。基于PSD-BPA仿真软件,提出一种发电机模型及参数动态仿真准确度评估的方法。采用时变负荷等值方法,将PMU量测功率信号直接注入发电机边界节点进行混合动态仿真,使注入量测信号更准确。以边界母线电压和频率作为考核量评估发电机模型及参数的仿真准确度,该方法可以更灵敏地发现模型参数误差;根据实测有功、无功变化情况设置扰动深度,综合了多场景扰动数据进行发电机模型及参数仿真准确度的评估。算例结果表明了所提评估方法的有效性。Inaccuracy of models and parameters in simulation components will lead to an evident deviation between simulation results and measured data. This paper presents a novel method for the accuracy assessment of models and parameters in generator based on PSD-BPA simulation software. It takes the field PMU power data as injection at gen- erator boundary bus to hybrid dynamic simulation by using time-varied load method, which can incorporate the mea- sured data into simulation system more directly. The simulation accuracy assessment work can be carried out through the examination of voltage and frequency at boundary bus. This method has high sensitivity of boundary injection to the model parameters, and it takes into account multiple disturbances to evaluate the accuracy of generator simulation with the help of setting index of disturbed depth of measured active power and reactive power. Test results of the case studies demonstrate the validity of the evaluation method.

关 键 词：时变负荷 混合动态仿真 发电机 准确度 扰动深度 

分 类 号：TM743[电气工程—电力系统及自动化]