水轮发电机手动控制模式下最小励磁电流计算方法  

Calculation of Minimum Excitation Current in Hydro-generator with Manual Control

作　　者：朱建华 赵启 冯斌 许立长 马建胜 焦春雷 ZHU Jian-hua;ZHAO Qi;FENG Bin;XU Li-chang;MA Jian-sheng;JIAO Chun-lei(Electrical Technology Center,Rundian Energy Science and Technology Co.,Ltd.,Zhengzhou 450000,China;Power Grid Technology Center,Electric Power Research Institute of State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830011,China)

机构地区：[1]润电能源科学技术有限公司电气技术中心,河南郑州450000 [2]新疆电力有限公司电力科学研究院电网技术中心,新疆乌鲁木齐830011

出　　处：《水电能源科学》2020年第11期152-155,共4页Water Resources and Power

摘　　要：为精确计算手动励磁电流控制模式下最小励磁电流,提出了一种在稳定极限约束条件下最小励磁电流计算方法。该方法运用线性化原理对小干扰情况下发电机和励磁控制模块进行建模,得出对应的海佛容—飞利蒲斯模式,接着运用劳斯判据确定手动控制模式下的稳定表达式,进而实现最小励磁电流的计算。仿真结果表明,与传统算法相比,该方法可以根据发电机参数和励磁参数得出允许最小励磁电流运行范围。仿真结果验证了该方法的有效性,给实际励磁运行提供了技术依据。In order to accurately determine the minimum excitation current with the manual control mode,a calculation method of minimum excitation current is proposed under the constraint of stability limit.This linearization model of the generator and excitation control module is built for the small disturbances,and obtains the corresponding HeffronPhilips model.Then,Routh-Hurwitz criterion is employed in calculation of the stable expression with the manual control,and the minimum excitation current is calculated.Compared with the traditional algorithm,the simulation results show that this method can obtain the allowable minimum excitation current operating range according to the parameters of generator and excitation.The results of simulation experiments verify the effectiveness of the proposed method,and it provides a technical basis for actual excitation operation.

关 键 词：手动控制 劳斯判据 海佛容-飞利蒲斯模型 最小励磁电流 

分 类 号：TM76[电气工程—电力系统及自动化]