جایابی واحدهای اندازه‌گیری فازوری در شبکه‌های قدرت و توزیع بهینه افزونگی اندازه‌گیری‌ها
محورهای موضوعی : انرژی های تجدیدپذیر
علی انصاری
1
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فریبرز حقیقت دار فشارکی
2
1 - دانشکده مهندسی برق، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران
2 - دانشکده مهندسی برق، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران
کلید واژه: افزونگی, جایابی بهینه واحدهای اندازه‌گیری فازوری, رویت‌پذیری, توزیع بهینه افزونگی, قابلیت‌اطمینان,
چکیده مقاله :
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.
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.
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[28] Available on line: http://www.ee.washington.edu/research/pstca/
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