A Robust Adaptive Overcurrent Relay Coordination Scheme for Wind-Farm-Integrated Power Systems Based on Forecasting the Wind Dynamics for Smart Energy Systems

Applied Sciences

Muhammad Waseem¹  Mohamed Sharaf²  Shafiq Ahmad²  Muhammad Shafiq³  Mian Rizwan⁴  Lucheng Hong⁴ 

[1] Department of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;Department of Industrial Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia;Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38541, Korea;Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment, Southeast University, Nanjing 210000, China;

关键词: protection coordination;    wind dynamics;    wind-speed forecasting;    seasonal autoregression integrated moving average (SARIMA);    adaptive neural network-based fuzzy inference system (ANFIS);    smart energy systems;   

DOI  :  10.3390/app10186318

来源: DOAJ

【 摘 要 】

Conventional protection schemes in the distribution system are liable to suffer from high penetration of renewable energy source-based distributed generation (RES-DG). The characteristics of RES-DG, such as wind turbine generators (WTGs), are stochastic due to the intermittent behavior of wind dynamics (WD). It can fluctuate the fault current level, which in turn creates the overcurrent relay coordination (ORC) problem. In this paper, the effects of WD such as wind speed and direction on the short-circuit current contribution from a WTG is investigated, and a robust adaptive overcurrent relay coordination scheme is proposed by forecasting the WD. The seasonal autoregression integrated moving average (SARIMA) and artificial neuro-fuzzy inference system (ANFIS) are implemented for forecasting periodic and nonperiodic WD, respectively, and the fault current level is calculated in advance. Furthermore, the ORC problem is optimized using hybrid Harris hawks optimization and linear programming (HHO–LP) to minimize the operating times of relays. The proposed algorithm is tested on the modified IEEE-8 bus system with wind farms, and the overcurrent relay (OCR) miscoordination caused by WD is eliminated. To further prove the effectiveness of the algorithm, it is also tested in a typical wind-farm-integrated substation. Compared to conventional protection schemes, the results of the proposed scheme were found to be promising in fault isolation with a remarkable reduction in the total operation time of relays and zero miscoordination.

【 授权许可】

Unknown