سایزبندی ترانسفورماتورهای قدرت در برنامه ریزی سیستم های قدرت
ترجمه نشده

سایزبندی ترانسفورماتورهای قدرت در برنامه ریزی سیستم های قدرت

عنوان فارسی مقاله: سایزبندی ترانسفورماتورهای قدرت در برنامه ریزی سیستم های قدرت با استفاده از رتبه بندی دمایی
عنوان انگلیسی مقاله: Sizing power transformers in power systems planning using thermal rating
مجله/کنفرانس: مجله بین المللی قدرت الکتریکی و سیستم های انرژی – nternational Journal of Electrical Power & Energy Systems
رشته های تحصیلی مرتبط: مهندسی برق
گرایش های تحصیلی مرتبط: برق قدرت، الکترونیک قدرت و ماشینهای الکتریکی، سیستم های قدرت
کلمات کلیدی فارسی: برنامه ریزی سیستم های قدرت، ترانسفورماتورهای قدرت، شبکه/گرید هوشمند، رتبه بندی دمایی پویا
کلمات کلیدی انگلیسی: Power systems planning, Power transformer, Smart grid, Dynamic thermal rating
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.ijepes.2019.105781
دانشگاه: University Grenoble Alpes, France
صفحات مقاله انگلیسی: 6
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: E14155
شاخص Quartile (چارک): Q1 در سال 2019
فرمت مقاله انگلیسی: PDF
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: دارد
کد محصول: E14155
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست مطالب (انگلیسی)

Abstract

1- Introduction

2- Benefit of a thermal criterion in planning

3- Thermal Criterion: Limits in practice

4- Linear thermal criterion

5- Conclusion Declaration of Competing Interest

Appendix A. Simplification of the thermal model

Appendix B. Linearization

Appendix C. Change of the considered thermal limit

References

بخشی از مقاله (انگلیسی)

Abstract

It has already been shown in the literature that power transformers may be more accurately sized by their thermal limits than by their rated power limit. In practice however, thermal limits are usually considered only in operations; but not at planning stage, where the more usual notion of rated power is used. This paper proposes a novel method to take into account (and benefit from) thermal limits directly at planning stage. This is made possible by quantifying separately the impact of each generator and load on the temperature of the distribution transformer. Decoupling the effect of individual generators and loads is achieved by linearizing and rewriting the analytical expression of the hot-spot transformer temperature. The practical value of the method is assessed using a real-world dataset, by estimating the increase in the hosting capacity of the considered transformer for additional generators and loads. Significant gains are obtained when the transformer is sized by generation, in particular when photovoltaic (PV) generators are involved.

Introduction

Distribution transformers and power (HV/MV) transformers are predominant assets in a distribution grid, and sizing them well is a crucial task for distribution system operators (DSOs). When replacing, reinforcing or adding a transformer, DSOs should find a compromise between the high capital cost of oversizing it, and the risks (in terms of endangering the reliability of electrical energy supply) of undersizing it.

The typical steps of a planning study aiming at sizing a transformer are the following. Some assumptions must first be made regarding future loading conditions, in order to generate a set of “extreme” scenarios for load and generation that will be used as stress-tests to size the transformer. For transformers sized by generation (not consumption), a typical example of such a scenario, currently used some DSOs, is to consider that all generators will output their rated power and that the load will reach its lowest possible value [1], while taking into account forecasts of the future evolution of load and generation.

After loading scenarios have been defined, one of the following two categories of methods may be used [2]:

• The first and simpler one is to simply define physical limits, typically on instantaneous active power but possibly on other criteria, and to size the equipment so that these limits are not violated in any of the stress-tests.

• And the second, more elaborate one, is to perform a so-called “lower cost optimization” that aims at finding an economical trade-off between a smaller transformer that will be heavily loaded and undergo accelerated aging and increased losses, and a larger one that will cost more but not suffer from increased aging and losses [3,4,15].