دانلود رایگان مقاله انگلیسی گذار از ولتاژ پایین نامتقارن طرح و تنظیم ولتاژ پر توان در واحدهای توزیع شده تولید - IEEE 2018

عنوان فارسی
گذار از ولتاژ پایین نامتقارن طرح و تنظیم ولتاژ پر توان در واحدهای توزیع شده تولید
عنوان انگلیسی
Asymmetric Low-Voltage Ride-Through Scheme and Dynamic Voltage Regulation in Distributed Generation Units
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
6
سال انتشار
2018
نشریه
آی تریپل ای - IEEE
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
مقالات پژوهشی (تحقیقاتی)
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E10467
رشته های مرتبط با این مقاله
مهندسی برق
گرایش های مرتبط با این مقاله
مهندسی الکترونیک، سیستم های قدرت
مجله
کنفرانس و نمایشگاه الکترونیک برق کاربردی - Applied Power Electronics Conference and Exposition
دانشگاه
Masoud M. Shabestary - Electrical and Computer Engineering - University of Alberta - Edmonton - Canada
کلمات کلیدی
سوق دادن خطا، کدهای شبکه، مبدلهای متصل به شبکه، کنترل توالی مثبت و منفی، خطاهای نامتعادل، تنظیم ولتاژ
doi یا شناسه دیجیتال
https://doi.org/10.1109/APEC.2018.8341231
چکیده

Abstract


Most grid codes mainly focus on the low-voltage ride-through (LVRT) requirements under balanced grid faults, and simply provide the LVRT curves which only apply for the positive-sequence voltage value. Under shortterm asymmetric faults, this brings some shortcomings: i) disconnecting the large units under temporary unbalanced faults worsens the situation most of the time, and may cause cascaded outages; ii) a reconnection process is required after the fault is cleared; iii) it is not an economical option, and the power may be wasted. Therefore, a new regulation scheme, called asymmetric low-voltage ride-through (ALVRT), is proposed in this paper. The ALVRT scheme is intended to provide the allowable margins for each phase voltage magnitude rather than for just positive-sequence voltage. This aids the large converter-interfaced distributed generation units not only ride through the asymmetrical grid faults, but also support the grid with a seamless transition over the fault and enhance the power system reliability. A new voltage regulation method is also proposed to address the ALVRT specifications. The successful results of the proposed regulation scheme and voltage support method are verified using simulation test cases.

نتیجه گیری

CONCLUSION


This paper put forth the necessity of the asymmetric lowvoltage ride-through (ALVRT) regulation scheme. The ALVRT scheme prescribes proper specifications on the regulation of the phase voltage magnitudes by appropriate positive and negative reactive currents injection and simultaneously respecting the phase current limitation. An advanced dynamic voltage regulation method was also proposed to address the ALVRT specifications. The proposed method supports the connection voltage under any unbalanced faults. The proposed method aims to regulate all three phase voltages inside the ALVRT boundaries within the dynamic margins which are adaptive to the codes of different countries. The performance of the proposed scheme and method were successfully verified by simulation results.


بدون دیدگاه