تأثیر نوسانات سریع PV بر کیفیت توان در گرید ولتاژ پایین
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تأثیر نوسانات سریع PV بر کیفیت توان در گرید ولتاژ پایین

عنوان فارسی مقاله: تأثیر نوسانات سریع PV بر کیفیت توان در گرید ولتاژ پایین و استراتژی های کاهش با استفاده از وسایل نقلیه الکتریکی
عنوان انگلیسی مقاله: Impact of rapid PV fluctuations on power quality in the low-voltage grid and mitigation strategies using electric vehicles
مجله/کنفرانس: مجله بین المللی سیستم های انرژی و برق - International Journal Of Electrical Power & Energy Systems
رشته های تحصیلی مرتبط: برق
گرایش های تحصیلی مرتبط: ماشینهای الکتریکی، سیستم های قدرت، الکترونیک، مهندسی کنترل، انتقال و توزیع
کلمات کلیدی فارسی: نوسانات PV، وسایل نقلیه الکتریکی، گرید ولتاژ پایین، سوسو زدن اندک، کیفیت توان
کلمات کلیدی انگلیسی: PV fluctuations، Electric vehicles، Low-voltage grid، Light flicker، Power quality
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.ijepes.2019.105741
دانشگاه: Copernicus Institute of Sustainable Development, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, The Netherlands
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2020
ایمپکت فاکتور: 5/627 در سال 2019
شاخص H_index: 100 در سال 2020
شاخص SJR: 1/260 در سال 2019
شناسه ISSN: 0142-0615
شاخص Quartile (چارک): Q1 در سال 2019
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 11
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: بله
آیا این مقاله مدل مفهومی دارد: دارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: دارد
کد محصول: E14466
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- System design


3- Case study and simulation data inputs


4- Simulation results


5- Discussion


6- Conclusion


References

نمونه متن انگلیسی مقاله

Abstract


Cloud transients cause rapid fluctuations in the output of photovoltaic (PV) systems, which can significantly affect the voltage levels in a low-voltage (LV) grid with high penetration of PV systems. These voltage fluctuations may lead to violation of the existing power quality standards. This study estimates the impact of rapid PV output fluctuations on the power quality in an existing LV grid by performing load flow analyses for scenarios in the years 2017, 2030 and 2050 using PV data with 20-second resolution. In this study, we propose a system for the mitigation of PV output fluctuations by altering the charging processes of electric vehicles (EVs) and we assess the effectiveness of the proposed system. Results indicate that PV output fluctuations have minor impact on the voltage levels in the year 2030, but PV output fluctuations induce considerable voltage fluctuations in the year 2050. The magnitude of the voltage fluctuations is dependent on the location in the grid, the installed PV capacity and the grid configuration. These voltage fluctuations can induce visible and annoying light flicker for a significant part of the day in the year 2050. Implementing the proposed system shows that EV technology can contribute in reducing the amount of visible and annoying light flicker considerably, however at the expense of increased charging costs for EV owners.


Introduction


The ongoing surge in photovoltaic (PV) generation capacity in low voltage (LV) grids poses unprecedented challenges to distribution system operators (DSOs). Passing clouds induce short-term variability in the output of PV systems. Fluctuations of 45–90% of the rated PV capacity per minute induced by passing clouds have been reported for a large PV plant in Portugal [1] and fluctuations of 63% of the rated PV capacity per minute have been measured in a Hawaiian PV plant [2]. Cloud transients also result in considerable PV output fluctuations on a shorter time-scale; PV output fluctuations of 80% of the installed PV capacity per 2 seconds have been observed in Spain [3]. The intermittent nature of PV generation is the source of power quality issues. The main power quality problems associated with rapid PV output fluctuations are voltage fluctuations and light flicker, which is induced by voltage fluctuations [4]. Voltage fluctuations and flicker can cause damage to electrical appliances connected to the grid [5] and light flicker can cause annoyance and health problems to people exposed to it [6,7]. For this reason, European DSOs must comply to the EN-50160 power quality standards [8]. The relationship between PV power output fluctuations and light flicker has been addressed in multiple studies, with inconclusive results. A Malaysian case study demonstrated a positive relationship between the installed PV capacity and flicker values, and reported flicker values induced by PV power output fluctuations that violate the local flicker limits [9]. In addition, a study using a measurement setup for 69 PV modules concluded that fluctuations in PV generation can lead to considerable light flicker values, depending on the metric used to measure flicker values [10]. However, an empirical analysis of a 1.41 MW PV plant in Florida reported a low correlation between PV power output and measured flicker values [11], but this study did not look into the correlation between fluctuations in PV generation and flicker values. Similarly, Stewart et al. [12] concluded based on Hawaiian solar irradiance data that PV generation does not cause violation of the light flicker standards. The flicker values in this study were determined by using the flicker threshold values for 1-second and 2-second voltage fluctuations and by using 1-second and 2-second PV generation data, but this study did not consider the fact that PV output fluctuations on a longer timescale can also induce light flicker [6]. 

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