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用于增强并网光伏/风力混合系统低电压穿越能力和电能质量的人工智能模糊控制与LAPO算法

Artificial intelligent fuzzy control and LAPO algorithm for enhancement LVRT and power quality of grid connected PV/wind hybrid systems.

作者信息

El Sayed Noura G, Yousef Ali M, El-Saady Gaber, Alanazi Meshari D, Ziedan Hamdy A, Abdelsattar Montaser

机构信息

Department of Electrical Engineering, Faculty of Engineering, Assiut University, Assiut, 71516, Egypt.

Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka, 72388, Saudi Arabia.

出版信息

Sci Rep. 2024 Dec 16;14(1):30475. doi: 10.1038/s41598-024-78384-5.

DOI:10.1038/s41598-024-78384-5
PMID:39681587
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11649785/
Abstract

Low Voltage Ride Through (LVRT) is considered one of the main and serious problems facing the electrical grid. It occurs due to three-phase symmetric faults and asymmetric faults such as a double line to ground fault that applies in this system. This paper applies Static Synchronous Compensators (STATCOM) to improve the LVRT capability and dynamic performance of an electrical grid linked to a Photovoltaic (PV)/Wind hybrid system through grid disturbances. A hybrid power system containing a PV station that produces 1 MW and a wind farm from type Doubly Fed Induction Generator (DFIG) that produces 9 MW is connected to STATCOM with 48 pulses at PCC bus and energized load. It compensates reactive power to improve LVRT that occurred due to fault. The applied STATCOM controller adjusts the voltage of the PCC bus during an occuring fault on the grid by compensating reactive power. STATCOM is controlled by a Proportional-Integral-Derivative (PID) and is compared with STATCOM controlled by Artificial Intelligence Control (AIC)-based on Proportional-Integral Fuzzy Logic Control (PI FLC). The Lightning Attachment Procedure Optimization Algorithm (LAPO) optimization method is used to adjust the parameters of the PI controller to reduce error signals. A simulation model of the suggested hybrid power system has been performed using Matlab/Simulink. The simulation results of STATCOM proved powerful and the effectiveness of STATCOM with PI FLC in reducing voltage dip, compensating active power of wind and PV farm, protecting DC-link voltage of PV and wind from overvoltage and oscillation that happens at three-phase fault and double line to ground fault as compared with PID STATCOM in enhancement LVRT capability, and power quality.

摘要

低电压穿越（LVRT）被认为是电网面临的主要严重问题之一。它是由三相对称故障和不对称故障（如本系统中出现的双线接地故障）引起的。本文应用静止同步补偿器（STATCOM）来提高通过电网扰动与光伏（PV）/风力混合系统相连的电网的LVRT能力和动态性能。一个包含产生1兆瓦电力的光伏电站和一个由双馈感应发电机（DFIG）型产生9兆瓦电力的风电场的混合电力系统，在公共连接点（PCC）母线处与具有48脉冲的STATCOM相连，并为负载供电。它补偿无功功率以改善因故障而出现的LVRT。所应用的STATCOM控制器在电网发生故障期间通过补偿无功功率来调节PCC母线的电压。STATCOM由比例积分微分（PID）控制，并与基于比例积分模糊逻辑控制（PI FLC）的人工智能控制（AIC）控制的STATCOM进行比较。采用雷电附着程序优化算法（LAPO）优化方法来调整PI控制器的参数，以减少误差信号。利用Matlab/Simulink对所建议的混合电力系统进行了仿真建模。STATCOM的仿真结果证明了其强大的功能以及PI FLC控制的STATCOM在降低电压跌落、补偿风电和光伏电站的有功功率、保护光伏和风电的直流链路电压免受三相故障和双线接地故障时发生的过电压和振荡方面的有效性，与PID控制的STATCOM相比，在增强LVRT能力和电能质量方面表现更优。

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