【摘 要】
：
风电机组运行参数计算是风电系统稳态调度和暂态分析的基础.恒kopt模型常用于最大功率点跟踪方式下双馈感应发电机(DFIG)初值计算,但是其所得发电机转速与风力机最优转速相矛
【机 构】
：
合肥工业大学电气与自动化工程学院,安徽省电力公司
论文部分内容阅读
风电机组运行参数计算是风电系统稳态调度和暂态分析的基础.恒kopt模型常用于最大功率点跟踪方式下双馈感应发电机(DFIG)初值计算,但是其所得发电机转速与风力机最优转速相矛盾,且不适用于旋转备用方式.文中针对DFIG旋转备用下的初值问题,提出了转速约束和出力约束2种算法.前者取转速固定,但不要求是最优转速,风力机捕捉机械功率已知,待求转子和变流器电压、风电机组有功出力,需要与电网潮流联立求解；后者取风电机组功率已知,待求转子和变流器电压、转速(或桨距角)及风力机出力,与电网潮流独立求解.2种算法的有效约束和待求变量数不同,但得到的风力机和发电机转速相符,均适用于风速低于或高于额定风速情况下的旋转备用运行.算例结果验证了所提模型的可行性和正确性.
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