نتایج جستجو برای: power losses
تعداد نتایج: 542636 فیلتر نتایج به سال:
Operating a device at high power and high frequency is a major problem because wall losses greatly reduce the efficiency of the device. In the present communication, authors analytically analyzed the dependence of ohmic/RF efficiency, the fraction of output power with respect to the total power generated, of gyrotron cavity structure on the conductivity of copper for the second harmonic TE0,6 m...
In this paper, a real time method is introduced for distribution networks reactive power control in order to co-ordinate all equipments contributing to improved voltage profile and reduced losses and costs. Imperialist Competitive Algorithm (ICA) is also employed for optimization purposes. The proposed method was implemented on a part of Tehran distribution network, which confirmed its effectiv...
flexible ac transmission systems (facts) controllers with its ability to directly control the power flow can offer great opportunities in modern power system, allowing better and safer operation of transmission network. in this paper, in order to find type, size and location of facts devices in a power system a dedicated improved particle swarm optimization (dipso) algorithm is developed for de...
This paper is an intent to quantify the impact of distributed generation (DG) over active and reactive power losses on distribution system. The novelty of this paper is the use of new a relevant index: DG penetration level, DG dispersion and DG technologies. Several simulations over a simple distribution system were done. Implications about location and size of DG units were considered using pe...
In a fully deregulated energy market a number of Transmission System Operators (TSOs) may be involved in a transaction. Losses related to a transaction need to be evaluated in real time, to facilitate the Gencos to supply the losses. This will also enable a TSO to plan the network operation in order to minimize the losses. Evaluation of extent of use of a transmission path by a transaction will...
This study inspects the optimum location of STATCOM device in long transmission line to acquire the maximum power system transient stability improvement. STATCOM is a kind of prominent and effective shunt FACTS device which is used in power system to enhance the power system stability and to regulate the line voltage. When it has been placed at the center point of a transmission line, play a ke...
Lifetime of power semiconductors is in an environment affected by power losses due to switching and conduction modes, as a result the semiconductor
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