Flicker mitigation and Voltage Quality Improvement in WP using IPC and ESS

Abstract

The wind power (WP) penetration with the distributed networks associated with an adverse impact on the voltage quality (VQ) due to the wind shear& tower shadow effects on WP which results in flickers in the WP. This paper proposes a new topology penetration of the WP with the Energy Storage System (ESS) and operating with Individual Pitch Control (IPC) Method for improving the VQ. The installation of an ESS is a possible VQ remedy in WP flicker problems, the proposed ESS control and management are tailored to that purpose such that the ESS offsets the flicker-producing fluctuations in the generated WP. The power sizing of ESS is defined by the estimated turbulence intensity and wind speed average at the installation site. A 2 MW capacity wind generator of a doubly fed induction generator (DFIG) type is employed as the source of WP and simulations are conducted on a simplified test system, as well as a detailed 25 kV distribution network on which results are compared with acknowledged reactive power flicker mitigation approaches and verified by prototyping in Mat-Lab simulink Soft ware and the simulated results are verified.