The ping-pang variable amplitude limiter used in the coordinated controller of a hybrid reactive power compensation system

Abstract

The hybrid reactive power compensation system, which connects different reactive power compensation devices to the same bus, will be essential equipment for future power systems. In a power grid with a high proportion of photovoltaic, wind turbines, and power electronic devices, it is significant to design a coordinated control strategy for the hybrid reactive power compensation system. In this paper, a kind of ping-pang variable amplitude limiter is used in the linear optimal controller. The ping-pang variable amplitude limiter can improve the transient stability of a hybrid reactive power compensation system. The effects of the coordinated controller are verified in simulation. Compared with the conventional linear optimal controller, the coordinated controller with the ping-pang variable amplitude limiter has a better optimization effect in large disturbance conditions.

Keywords

• Hybrid reactive power compensation
• Variable amplitude limiter
• Ping-pang controller
• Hamilton minimum principle
• Static var generator
• Synchronous generator