滤波器装置中晶闸管快速投切的设计与实现

Design and Implementation of Zero-crossing Switching in Thyristor Switched Filter

针对晶闸管投切滤波器控制装置中要求快速过零投切的问题,该文基于嵌入式软件实现方法设计了一种比较高效、实用的过零检测方法,较好地解决了通常零点检测硬件电路会出现的误触发以及硬件成本高的问题,达到了晶闸管投切电容器的精确控制和快速投切。通过实验测试和在实际电力场所的运行实践证明,此设计具有较好的实用性。

For the requirement of quick zero-crossing switching in thyristor switched filter, this paper designs a more efficient and practical zero-crossing detection approach based on embedded software, to solve the prob- lems of error trigger and high cost of usual zero-crossing detection hardware, and to achieve the precise control and fast switching for TSC. Experiment testing of the zero-crossing detection approach and field operation of the thyristor switched filter proved that our design has a better practicality.