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A new protection strategy for microgrid based on integration of active power index and fault current differential energy | ||
| International Journal of Industrial Electronics Control and Optimization | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 31 فروردین 1404 اصل مقاله (1.39 M) | ||
| نوع مقاله: Research Articles | ||
| شناسه دیجیتال (DOI): 10.22111/ieco.2024.49066.1597 | ||
| نویسندگان | ||
| Abbas Ketabi* 1؛ reza karimi2؛ Seyyed Mohammad Nobakhti3 | ||
| 1Department of electrical engineering, Kashan University, Kashan, Iran | ||
| 2University of Kashan | ||
| 3Department of Electrical Engineering, Technical and Vocational University (TVU), Tehran, Iran | ||
| چکیده | ||
| The utilization of distributed generation (DG) sources in distribution systems has experienced significant growth due to their numerous advantages. Despite benefits such as voltage support and reduced losses, DG integration has introduced substantial challenges to distribution system protection, impairing the performance of conventional protection schemes. Variations in fault current levels, especially during islanding conditions, and bidirectional fault current flow are among the factors influencing the operation of traditional protection schemes. Under such conditions, directional overcurrent relays may not operate as intended. Moreover, coordinating multiple overcurrent relays is often challenging and can lead to increased operating times of protective relays. This paper proposes a directional comparison protection scheme for protecting lines and zones in active distribution systems based on the calculation of incremental active power transient energy. The proposed scheme is capable of detecting faults on microgrid lines at both low and medium voltage levels and is adaptable to changes in microgrid configuration. To prevent the directional protection scheme from operating during load switching transients, a differential protection scheme based on the calculation of transient energy of current signals is employed. The proposed methods offer the advantages of ease of calculation and high accuracy. An AC active distribution system incorporating inverter-based DG sources is implemented in the PSCAD-EMTDC software to simulate various fault types. The simulation results are then transferred to MATLAB for the implementation of the proposed algorithms. | ||
| کلیدواژه‌ها | ||
| Active power flowing؛ Distributed generation؛ Energy difference signal؛ Fault current direction؛ Microgrid protection | ||
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آمار تعداد مشاهده مقاله: 119 تعداد دریافت فایل اصل مقاله: 52 |
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