With the aim of mitigating instability of the power supply of a certai n factory,especially improving the problem of voltage fluctuation and low power factor on the end of the pressing workshop,a bidirectional dynamic reactive po wer compensator can realize the bidirectional voltage regulation,which adopted the triggering technology of photoelectric zero voltage and brought elimination of inrush current and switching over-voltage.The compensation mode settled the pre-vious drawbacks of inflexible and unidir...