The Role of Power Electronics in Modern Energy System Integration

Abstract

This paper will discuss different aspects of power electronics in modern energy systems. The transition from conventional, centralized power systems with large-scale generations to modern, deregulated systems with distributed generations is discussed. Furthermore, the function of some dominant green energy generation technologies based on power electronics is explained. Moreover, fundamentals of control and operation of modern systems with power electronics-based generations are presented in this paper. The major technical challenges that are deteriorating the overall system performance and reliability are addressed and feasible solutions are explained.

A Review of Fast Power-Reserve Control Techniques in Grid-Connected Wind Energy Conversion Systems

“…(3) Second method. (4) Constant term is applied in the underproduction mode only for the fourth method.…”

“…(3) a, b and c are determined by setting the initial underproduction power and the rotor speed to return to MPPT mode. (4) ∆ω = ω − ω i is the difference between the instantaneous and the initial rotating speed. ( 5) Reference [61] does not employ a specific underproduction power reference.…”

“…This has spurred the development of green energy systems, which rely on renewable-based sources, energy storage, and electric vehicles. These systems require smart control systems and real-time monitoring to operate optimally [4]. Consequently, it has become essential to shift our mindset from the operation of conventional power systems to a new paradigm.…”

“…The recent growth of non-synchronous renewable energy sources has been driving the development toward sustainable energy generation [3]. However, it necessitates modifications in power system structures due to the lower capacity generation of renewable units compared to traditional power plants, their integration with power-electronic converters [4], and their diverse characteristics [5]. The high penetration of intermittent renewable resources poses challenges to grid operations, including (i) transmission systems: good wind and large-scale solar sites may be located in areas far from transmission systems or with limited transmission capacity; (ii) distribution systems: residential solar generation leads to new power flow patterns, requiring changes in protection and control strategies; (iii) interconnection standards: these standards are related to power factor correction and low-voltage ride-through capability; (iv) operational challenges: these arise due to the intermittent nature of wind and solar generation and (v) forecasting and scheduling: these are necessary to maintain a reliable dispatchable power reserve [2].…”