Reactive power compensation method in modern power system facing energy conversion

The equivalent model of modern power system is more and difficult to describe its complex stability characteristics, with the continuous promotion conversion. This paper proposes an improved method consider voltage deviation between side load side. On this basis, margin index derived. Therefore, relationship reactive compensation can be analyzed. Finally, correctness effectiveness are verified by IEEE39 node actual provincial grid. proposed obviously improve when applied small summer mode system. (The weakest increased 12.8%, average whole network 1.5%.)