Load frequency control of multi area power system in deregulated environment with robust Controllers in coordination with frequency controllable HVDC link

This paper presents the coordinated control of HVDC link with optimal sliding mode control and HVDC link with H-infinity controller has been proposed to solve load frequency control of multi area power system in open market environment. The performance of proposed coordinated control strategies such as HVDC-OSMC, HVDC-H-infinity has been demonstrated on two area deregulated thermal power system under one possible contact scenario. The superiority of proposed new coordinated (HVDC-H-infinity) control strategy demonstrated over HVDC-OSMC (HVDC-Optimal sliding mode controller), HVDC-PI (HVDC-Conventional PI Controller) and without any controller.