The Correlation between the Power Quality Indicators and Entropy Production Characteristics of Wind Power+Energy Storage Systems  

作　　者：Caifeng Wen Boxin Zhang Yuanjun Dai Wenxin Wang Wanbing Xie Qian Du 

机构地区：[1]School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot,010080,China [2]Ministry of Education Key Laboratory ofWind and Solar Energy Utilization Technology,Hohhot,010080,China [3]School of Mechanical Engineering,Shanghai Institute of Electrical Engineering,Shanghai,201306,China [4]School of Civil Engineering,Inner Mongolia University of Technology,Hohhot,010051,China

出　　处：《Energy Engineering》2024年第10期2961-2979,共19页能源工程（英文）

基　　金：Supported by the National Natural Science Foundation of China(No.51966013);Inner Mongolia Natural Science Foundation Jieqing Project(No.2023JQ04);the National Natural Science Foundation of China(No.51966018);the Natural Science Foundation of Inner Mongolia Autonomous Region(No.STZC202230).

摘　　要：Power quality improvements help guide and solve the problems of inefficient energy production and unstable power output in wind power systems.The purpose of this paper is mainly to explore the influence of different energy storage batteries on various power quality indicators by adding different energy storage devices to the simulated wind power system,and to explore the correlation between systementropy generation and various indicators,so as to provide a theoretical basis for directly improving power quality by reducing loss.A steady-state experiment was performed by replacing the wind wheel with an electric motor,and the output power qualities of the wind power systemwith andwithout energy storagewere compared and analyzed.Moreover,the improvement effect of different energy storage devices on various indicatorswas obtained.Then,based on the entropy theory,the loss of the internal components of the wind power system generator is simulated and explored by Ansys software.Through the analysis of power quality evaluation indicators,such as current harmonic distortion rate,frequency deviation rate,and voltage fluctuation,the correlation between entropy production and each evaluation indicator was explored to investigate effective methods to improve power quality by reducing entropy production.The results showed that the current harmonic distortion rate,voltage fluctuation,voltage deviation,and system entropy production are positively correlated in the tests and that the power factor is negatively correlated with system entropy production.In the frequency range,the frequency deviationwas not significantly correlated with the systementropy production.

关 键 词：Wind power system entropy production system losses power quality indexes battery energy storage 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]