Babar Hussain

Abstract Doubly-fed induction generators (DFIGs), commonly used in a wind power plant (WPP), effectively convert wind energy into electrical power. However, a DFIG-based WPP (DWPP) has limited flexibility in generating reactive power (Q) due to interface converters that cause delays in fault recovery voltage. Insufficient Q support leads to dynamic voltage stability (DVS) and reliability problems.

1 Introduction Heavy metals (HMs) are considered as priority environmental pollutants because of their high toxicity and prolonged persistence in soil and water systems (Hu et al. 2026). These metals are released in the environment through natural processes such as weathering of rocks, volcanic eruptions etc.

1. Introduction Classical and neoclassical theories emphasize the importance of the labor force and physical capital as primary drivers of economic output, with labor force participation influenced by population dynamics and physical capital formation enhancing productivity through investments in machinery and infrastructure [,,]. However, these theories often treat technological advancements as exogenous factors that temporarily offset diminishing returns.