一种高精度同期并网控制方法  

A High-precision Control Method for Synchronization

作　　者：赵涌[1] 张红芳[1] 彭文才[1] 王伟[1] 

机构地区：[1]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210003

出　　处：《水电自动化与大坝监测》2010年第3期8-10,共3页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：简要叙述了传统同期预测方式的实现方法,分析了该方式的特点与局限,提出了以最小二乘法拟合曲线准确描述相角差变化的轨迹,以割线法迭代求解精确求取零相角出现的时刻,从而实现零相角合闸的高精度同期算法。仿真试验验证了该同期控制策略具有较高的精度。The implementation method for traditional synchronization prediction is introduced and its characteristics and limitations are analyzed. A high-precision synchronization algorithm is proposed by exactly describing the phase-angle difference trajectory with the fitted curve based on the least square method and solving the accurate moment of zero phase-angle based on iterative solution. The high-precision of this control method is proved by simulation experiments.

关 键 词：同期并网 最小二乘法 割线法 相角差 

分 类 号：O241.5[理学—计算数学]