نتایج جستجو برای: power transmission
تعداد نتایج: 708733 فیلتر نتایج به سال:
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Congestion Risk Management is one of the most important subjects of Transmission management in deregulated power system and world electricity market, especially markets of zonal or local pricing in which Firm Transmission Rights (in other words Financial Transmission Rights) are the main elements. In this study, considering subjects of Financial Rights of Transmission Congestion, methods of opt...
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در این پروژه، با تعیین میزان تولید منابع پراکنده در کنار کنترل ولتاژ/توان راکتیو و تجدید آرایش سیستم برای سطوح بار مختلف، بهره برداری از سیستم توزیع برای تحقق اهدافی چون کاهش تلفات انرژی سیستم، بهبود شاخص پایداری ولتاژ و تقسیم مناسب جریان توان بین فیدرها انجام می شود. به این منظور یک مسیله بهینه سازی تعریف و با توجه به تعداد فراوان متغیرهای کنترلی و حالت گسسته آن ها، الگوریتم حلی بر مبنای روش ج...
This paper proposes an idea to modify the conventional Wilkinson power dividers to have physically spaced output ports. The well-known internal resistor of Wilkinson power divider is now connected to output ports by two additional transmission lines to create a triangular shape power divider. Several modified power dividers are designed at frequency of 1.0 GHz and one of them is fabricated and ...
This paper proposes a method for extending the ability of rotary power flow controller (RPFC) using tap-changer of the RPFC’s transformers. A detailed model of the device is presented to analyze the effects of the tap changer operation on the performance of the RPFC. To evaluate the results, the RPFC model is simulated using PSCAD/EMTDC software. Dynamic operation of the RPFC on a 400 kV transm...
Fault location is an interesting subject in power grids. On the other hand, the application of fault current limiter (FCL) has been increasing in power network and causes some problems in operation of protection systems. This paper studies the application of FCL in power system and its effect on one-ended simple reactance fault location methods. In these methods, only voltages and currents of t...
Unified Power Flow Controller (UPFC) is one of the most efficient FACTS devices that can be individually or combinatorial on all effective parameters in the transmission power of the transmission lines. With the flexibility of effective parameters in power passage, the power system operation can be improved. in this study, the optimization algorithm based on location and optimal capacity of UPF...
Unlike perfect competitive markets, in oligopoly electricity markets due to strategic producers and transmission constraints GenCos may increase their own profit through strategic biddings. This paper investigates the problem of developing optimal bidding strategies of GenCos considering participants’ market power and transmission constraints. The problem is modeled as a bi-level optimizati...
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