基于动态磁阻的磁控式并联电抗器等效电抗暂态模型  

Equivalent Electro-magnetic Transient Model Based on Dynamic Reluctance for Magnetically Controlled Shunt Reactor

作　　者：郑伟杰[1] 周孝信[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2011年第4期1-6,共6页Proceedings of the CSEE

基　　金："十一五"国家科技支撑计划重大项目(2008BAA13B03)~~

摘　　要：提出一种描述超/特高压磁控式并联电抗器(magnetically controlled shunt reactor,MCSR)非线性磁饱和特性的实用化解耦电磁暂态模型。基于动态磁阻的思想,提出瞬时等效电抗的算法,反映了交直流混合励磁条件下饱和等效电抗的实时动态变化特性;以反双曲函数描述非线性磁路特性,对耦合磁路方程进行解耦,并用带阻尼的隐式梯形积分算法对瞬时等效电抗进行差分化,建立电磁暂态模型,能够与电磁暂态计算相兼容。已在电力系统全数字实时仿真装置(advanced digital power system simulator,ADPSS)中编程实现了仿真模型的工程化应用,并搭建标准算例,以工程投运的MCSR现场运行参数为模型输入量,进行仿真,计算结果数值精确,波形吻合,验证了模型的正确性。A mathematical model which describes the nonlinear magnetic saturation characteristics of magnetically controlled shunt reactor （MCSR） for extra and ultra voltage was proposed. Based on dynamic reluctance, instantaneous equivalent reactor calculation algorithm was proposed and used to reflect the dynamic characteristics of a shunt reactor system with AC-DC mixed excitation, while inverse-hyperbolic function describing the nonlinear characteristics, damping implicit trapezoidal integration algorithm was used to differentiate the reactor, equivalent electro-magnetic transient model was established accordingly, which is compatible with the electromagnetic transient algorithm. Advanced digital power system simulator （ADPSS） has contained the model, site operation parameters of MCSR in project were used as input in the simulation example, the results confirm the accuracy of model.

关 键 词：磁控式并联电抗器 电磁暂态模型 非线性磁饱和特性 动态磁阻 瞬时等效电抗 

分 类 号：TM71[电气工程—电力系统及自动化]