摘要
传统基于磁阀式的单相可控电抗器的谐波抑制方法,对铁磁谐振过电压干扰的敏感度较高,谐波抑制效果差,导致电抗率波动幅度高。因此,为了解决传统方法存在的问题,提出新的铁磁谐振过电压干扰下单相可控电抗器的谐波抑制方法。通过设计单相可控电抗器的谐波抑制方案,将可控电抗器接成三角形,采用移向绕组同电网连接,基于系统容量和待过滤的谐波次数,确定移相绕组的单相可控电抗器谐波抑制拓扑结果,采用合理的相间绕组连接措施和移相绕组匝数,得到所需移相电压,抑制可控电抗器形成的谐波。实验结果表明,所提方法对变频电机谐波抑制效果好,可将电抗率调控到合理值。
The traditional harmonic suppression method based on the magnetic valve type single-phase controllable reactor has high sensitivity to the interference of ferroresonance overvohage and poor harmonic suppression effect, which leads to a high amplitude of reactance rate fluctuation. Therefore, in order to solve the problems of traditional methods, a new harmonic suppression method for single-phase controllable reactors under ferroresonance overvoltage interference is proposed. By designing the harmonic suppression scheme of single-phase controllable reactor, the controllable reactor is connected to the triangle, the moving winding is connected with the power grid. Based on the system capacity and the number of harmonics to be filtered, the harmonic suppression topology results of phase shifting windings are obtained. The interphase winding connection measures and phase shift winding are adopted. The number of turns is obtained, and the required phase shifting voltage is obtained to suppress the harmonics formed by controllable reactors. The experimental results show that the proposed method is effective for harmonic suppression of variable frequency motors, and the reactance rate can be adjusted to a reasonable value.
作者
杨书英
李昌陵
刘芳
朱明明
李长久
YANG Shuying;LI Changling;LIU Fang;ZHU Mingming;LI Changjiu(Economic and Technology Research Institute of Xinjiang Electric Power Company,Urumqi 830000,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第10期157-163,共7页
High Voltage Apparatus
关键词
铁磁谐振过电压
移向绕组
单相可控
电抗器
谐波抑制
ferroresonance overvohage
moving winding
single-phase controllable
reactor
harmonic suppression
