جایابی واحدهای اندازه‌گیری فازوری در شبکه‌های قدرت و توزیع بهینه افزونگی اندازه‌گیری‌ها

نوع مقاله: مقاله پژوهشی

نویسندگان

دانشکده مهندسی برق، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران

چکیده

در این مقاله، علاوه بر جایابی بهینه واحدهای اندازه‌گیری فازوری، روش جدیدی جهت توزیع بهینه افزونگی در راستای ارتقاء قابلیت اطمینان سیستم، ارائه شده است. از آنجا که باس‌ها با افزونگی مرتبه 1 با از دست رفتن اندازه‎گیری خود، رویت‌پذیری سیستم را با خطر مواجه می‌کنند،با کمک این روش سعی شده که تعداد این قبیل از باس‌‌‌ها در سیستم کاهش یابد. از سوی دیگر، روش پیشنهادی، بر خلاف روش‎های قبلی، سعی می‎کند که با کاهش تعداد سایر باس‎های با افزونگی مراتب پایین، بدون افزایش مراتب پائین‎تر از خود، قابلیت اطمینان سیستم را بهبود بخشد. همچنین جایابی واحدهای اندازه‌گیری فازوری در پیشامدهای خروج خط یا از دست رفتن واحد اندازه‎گیری، توسط این روش جدید، صورت می‎گیرد. لازم به ذکر است که روش‎های پیشنهادی روی سیستم‌های تست مرجع 14-، 30-، 57- و 118- شینه IEEE پیاده‌سازی شده و نتایج حاصل از شبیه‎سازی با روش‎های دیگر مقایسه گردیده است. همچنین موارد فوق با در نظر گرفتن و بدون در نظر گرفتن اثر گره‎های تزریق صفر مورد مطالعه قرار گرفته است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Placement of Phasor Measurement Units in Power Networks and Optimal Distribution of Measurement Redudancy

نویسندگان [English]

  • ali ansari
  • Fariborz Haghighatdar Fesharaki
Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
چکیده [English]

Abstract:
In this thesis in addition to optimal placement of phasor measurement units (PMUs) a new method is proposed for optimal distribution of measurements redundancy. Since the buses having first order redundancy degrade the system observability by missing their measurements, this method is used to reduce the number of these. On the other hand, the proposed method, in spite of the previous methods, is used to enhance the system observability by improving the redundancy order of the other low order redundancy buses without increasing the number of the lower orders. .In addition, by using this method, the optimal PMU placement can be obtained considering the contingencies such as PMU outage or line outage. It should be noted that the proposed methods are implemented on the IEEE 14-, 30, 57- and 118- bus power networks. The simulation results are compared with previous methods. In addition, simulations are performed with and without considering the effect of zero injection buses.

کلیدواژه‌ها [English]

  • Optimal PMU Placement
  • redundancy
  • Optimal Distribution of Measurement Redundancy
  • reliability
  • Observability

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[28]  Available on line: http://www.ee.washington.edu/research/pstca/