Investigation on ferroresonance due to power transformer energization in high voltage 400 kV transmission grid
نویسندگان
چکیده
منابع مشابه
Investigation of Station Service Transformer Ferroresonance in Manitoba Hydro’s 230-kV Dorsey Converter Station
An investigation of ferroresonance in a 230-kV transformer is undertaken. Correct modelling of the iron-core losses and the direct magnetic coupling between phases are shown to be important in duplicating field observations. A brute-force time-domain method and an analytical method for displaying margins to ferroresonance on a parameter plane are compared. Following proposed bus modifications, ...
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The author is with the System Planning Department, Manitoba Hydro, 121146 Waverley Street, P.O. Box 815, Winnipeg, Manitoba, R3C 2P4, Canada (e-mail: [email protected]). Abstract—Catastrophic equipment failures continue to occur today due to ferroresonance even though this phenomenon has been extensively studied over the past ninety years. This paper is concerned with describing practical ...
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Under network equipment outage conditions, the system has to be restored to normal operating conditions as fast as possible to ensure the supply security and avoid prolonged interruption of power supply. In the development of the restoration strategy under different contingencies, a wide range of issues is needed to be studied. For different contingencies, it is important that appropriate appro...
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چکیده این پایان نامه به بررسی اثر سیم پیچ مغناطیسی و کاوه یِ خوشه گر با بسامد رادیویی بر هاله و بیرونگراییِ باریکه هایِ پیوسته و خوشه ایِ ذرات باردار در شتابدهنده های خطیِ یونی، پروتونی با جریان بالا می پردازد و راه حل هایی برای بهینه نگهداشتن این کمیتها ارایه می دهد. بیرونگرایی یکی از کمیتهای اساسی باریکه هایِ ذرات باردار در شتابدهنده ها است که تاثیر قابل توجهی بر قیمت، هزینه و کاراییِ هر شتابدهند...
A New Model for Analysis of Unusual Mal-Operation of Differential Protection Due to the Ultra-Saturation Phenomenon during the Loaded Power Transformer Energization
In this paper, a new model based on the thevenin equivalent circuit for investigating the ultra-saturation phenomenon during the energization of a loaded power transformer is presented and its effect on the differential protection of the transformer is considered. The ultra-saturation phenomenon causes the mal-operation of the power transformer differential protection. So, the description a...
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ژورنال
عنوان ژورنال: Archives of Electrical Engineering
سال: 2023
ISSN: ['1427-4221', '2300-2506']
DOI: https://doi.org/10.24425/aee.2019.130682