Assessment of the impact of a 10-MW grid-tied solar system on the Libyan grid in terms of the power-protection system stability  

作　　者：Feras Alasali Abdelaziz Salah Saidi Naser El-Naily Othman Alsmadi Mohamed Khaleel Ibrahim Ghirani 

机构地区：[1]Department of Electrical Engineering,Faculty of Engineering,The Hashemite University,PO Box 330127,Zarqa 13133,Jordan [2]Department of Electrical Engineering,King Khalid University,Abha PO Box 394,Abha City 61411,Saudi Arabia [3]Universitéde Tunis El Manar,Ecole Nationale d’Ingénieurs de Tunis,Laboratoire des SystèmesÉlectriques,Tunisie [4]Electrical Engineering Department,College of Electrical and Electronics Technology-Benghazi,Benghazi,Libya [5]Electrical Engineering Department,Faculty of Engineering,The University of Jordan,Amman,Jordan [6]Aeronautical Engineering Department,College of Civil Aviation Misrata,Libya

出　　处：《Clean Energy》2023年第2期389-407,共19页清洁能源（英文）

基　　金：the Deanship of Scientific Research at King Khalid University for funding this work through Research Groups Program under grant number RGP.2/81/43.

摘　　要：The energy market in Libya is expected to face substantial changes in the next few years:electrical energy consumption will increase by 50% within the next 4 years.Therefore,there is a plan to gradually increase renewable energy sources in the power network by 2030 to 30%.Solar photovoltaic(PV)plants will play a significant role in the energy transition and the mix of energy sources in Libya.This article is a study conducted to investigate the challenges of power-flow management and power protection from integrating PV power plants into the Libyan power grid.In particular,a simulation model is built for the Kufra PV power plant(10 MW)with eight buses to assess the power network performance in terms of power quality such as voltage profile,power losses and harmonics.Furthermore,the impact of the PV plant on the short-circuit level and the power-protection system is presented under different operating conditions.The fault ride-through(FRT)is operated using standard ambient temperature and a wide range of irradiation intensity,and is verified by using the Libyan grid code.The results show that the integration of the PV plant into the grid has a significant impact on the short-circuit level and the FRT over the different fault levels and locations on the network.The initial period of the three-phase fault shows that the PV plant will be disconnected from the grid due to a decrease in the root mean square value voltages where the reactive and active power of the grid reach 938 MVAR and 261 MW,respectively.These results show that increasing the fault level will lead to an increase in injecting the active power.This work is considered the first extensive investigation into the challenges of modern power-flow management and power protection for the power network system in Libya.

关 键 词：PHOTOVOLTAIC renewable energy sources power protection voltage profile fault ride-through 

分 类 号：TM61[电气工程—电力系统及自动化]