نتایج جستجو برای: high voltage power lines

تعداد نتایج: 2653155  

This paper proposes a new hybrid active power filter, including voltage source converter (VSC) based active power filter and Thyristor Controllable LC Passive Filter (TCLC-HAPF) for eliminating harmonic load current components and compensating reactive power. This new structure which is based on the separation of high and low-frequency components of load current idea can reduce the drawbacks of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

در بخش نظری این پایان نامه، سهم کوارک نوع پائین از کوارکهای نسل چهارم (b?)، در ممان دوقطبی الکتریکی کوارک top، تنها با در نظر گرفتن نمودارهای تک حلقه مطالعه شده است. با استفاده از قیود شناخته شده بر روی ممان دو قطبی الکتریکی کوارک top، حدی بر روی جرم کوارک b? گذاشته شده است. سپس با استفاده از نسبت جرم های کوارک های نسل چهارم که از سایر مطالعات بدست آمده، و همچنین قید به دست آمده بر روی mb? ناشی...

Journal: :the modares journal of electrical engineering 2009
asghar akbari foroud

thyristor-controlled series compensator (tcsc) is one of the electric power lines series compensators. tcsc increases transmission system capacity and improves system dynamic and voltage stability. several controllers have been proposed, but most of them generally improve one of tcsc capabilities. in this paper a tcsc robust controller is designed based on nonlinear quantitative feedback theory...

Gholami, Mojtaba ,

Abstract: Optimization of DG and capacitors is a nonlinear objective optimization problem with equal and unequal constraints, and the efficiency of meta-heuristic methods for solving optimization problems has been proven to any degree of complex it. As the population grows and then electricity consumption increases, the need for generation increases, which further reduces voltage, increases los...

Journal: :Frontiers in Energy Research 2021

2006
Karla Atkins

The North American power grid is a giant network of more than 15,000 generators in 10,000 power plants, and hundreds of thousands of miles of transmission lines. Analysts estimate it to be worth over $800 billion. In 2000, the transmission and distribution infrastructure was valued at $358 billion. Geographically, the power grid forms a network of over 1 million kilometres of high voltage lines...

2017
Lars Abrahamsson

In railway power supply systems using AC frequencies lower than the public grids of 50/60 Hz, high voltage AC overhead transmission lines in railway grid frequency are used as one measure of strengthening the systems. An increased resistance to overhead high voltage AC transmission lines, may motivate cables for future railway power systems. With the frequency of 50/60 Hz, reactive power produc...

Journal: :journal of operation and automation in power engineering 2014
f. namdari l. hatamvand n. shojaei h. beiranvand

voltage stability issues are growing challenges in many modern power systems. this paper proposes optimizing the size and location of static var compensator (svc) devices using a fuzzy weighted seeker optimization algorithm (fwsoa), as an effective solution to overcome such issues. although the primary purpose of svc is bus voltage regulation, it can also be useful for voltage stability enhance...

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