电力系统保护与控制2016，Vol.44Issue(23)：184-189,6.DOI:10.7667/PSPC152049
基于三阶广义积分的锁相环设计
Design of phase locked loop based on third-order general-integrator
郗来迎 1王金富 1侯川川 2仇志丽2
作者信息
- 1. 国网天津检修公司，天津 300000
- 2. 中国矿业大学，江苏 徐州 221000
- 折叠
摘要
Abstract
During the operation of power system, the voltage of the power grid is usually unbalanced and distorted, meanwhile the sampling signal may conclude DC component, which have a negative effect on the precision phase lock. Considering this situation, this paper introduces third-order general-integrator (TOGI) filter decoupling structure, and constructs a phase-locked loop. The function of the orthogonal signal in TOGI is analyzed, and the transformation matrix is derived to obtain the equivalent structure. It is proved that the structure can filter out the DC component and high frequency component obviously. Equivalent link is embedded in the phase locked loop (PLL) to get positive sequence voltage component inαβ coordinates, and the phase structure and the corresponding parameter are analyzed. In the end, simulation is carried out in the case of DC component, distortion and jump in the voltage signal. The simulation results show that the design of phase locked loop based on the TOGI can realize the phase lock precisely and quickly.关键词
直流分量/畸变/三阶广义积分/滤波/锁相环Key words
DC component/distortion/third-order general-integrator/filter/phase locked loop引用本文复制引用
郗来迎,王金富,侯川川,仇志丽..基于三阶广义积分的锁相环设计[J].电力系统保护与控制,2016,44(23):184-189,6.
