An Improved Over-Speed Deloading Control of Wind Power Systems for Primary Frequency Regulation Considering Turbulence Characteristics

Abstract

Wind power systems participating in primary frequency regulation have become a novel trend. In order to solve the problem of the over-speed deloading (OSD) control of wind power systems failing to provide reserved capacity for primary frequency regulation while under turbulent winds, this paper analyzes the influence mechanism of turbulence characteristics on the OSD control and the relationship between the reserve capacity of OSD control and the deloading power coefficient under turbulent wind speeds, while also quantifying the relationship between the turbulence characteristic index and deloading power coefficient. The range of the deloading power coefficient is obtained accordingly, based on which improved OSD control is proposed to dynamically optimize the deloading power coefficient according to the turbulence characteristics, which improves the frequency regulation performance of wind power systems under turbulent wind speed. According to the simulations and experimental results, the improved method proposed in this paper has good effectiveness and superiority in frequency regulation effect and rotor speed performance.

A Novel Hybrid Prairie Dog Optimization Algorithm - Marine Predator Algorithm for Tuning Parameters Power System Stabilizer

“…The important keys in distributing electric power systems are stability and consistency [15][16][17][18][19][20][21]. The ability of a system to recover after experiencing a shock is an important focus [22][23][24][25][26][27][28]. Changes in loads and additions to loads that are well planned or sudden are things that worry the electric power system [29].…”

Optimization of a Virtual Synchronous Control Parameter for a Wind Turbine Generator Considering the Physical Constraint Boundary of Primary Frequency Regulation

“…As WTGs are connected to the power grid through power electronic converters, they are decoupled from the power system and cannot provide frequency support. Therefore, replacing traditional synchronous generators with WTGs will inevitably reduce inertia and weaken the frequency regulation ability of the power system [3][4][5]. In the case of interference, the power system with a high proportion of renewable energies is more prone to grid frequency accidents [6,7].…”

Analysis of Frequency Regulation Capability and Fatigue Loads of Wind Turbine Based on Over-Speed Control

“…In recent years, the role of wind turbines (WTs) in the primary frequency regulation of power systems has garnered increased attention [1][2][3][4]. Over-speed control is one of the most commonly used primary frequency regulation methods, as it can improve the frequency stability of power systems with high renewable energy penetration [5][6][7][8][9]. However, the frequency regulation capability and fatigue loads of WTs under over-speed control have been seldom analyzed.…”