توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A FUZZY LOGIC CONTROLLER DESIGN FOR INTERLINE DYNAMIC VOLTAGE RESTORER
نویسنده(ها): ، ،
اطلاعات انتشار: ششمین کنفرانس بین‌المللی مسائل فنی و فیزیکی در مهندسی قدرت، سال
تعداد صفحات: ۵
Custom Power devices such as DVR and DSTATCOM are used in order to improve power quality in distribution systems. It is required to provide the real power for these devices to compensate deep voltage sag for sufficient time. Interline Dynamic Voltage Restorer is consists of several DVRs in different feeders. In this paper, for mitigation voltage sags, swell, unbalance, voltage flicker, reduction harmonics of injected voltage and improve dynamic performance, a fuzzy system is proposed to control the IDVR performance. The control strategy of the fuzzy controller is replaced by the conventional strategies. The novel control method is implemented by using a fuzzy logic system and a carrier modulated PWM inverter. Simulation is carried out by Matlab\Simulink and it demonstrates that the proposed controller has quick response with lower THD.<\div>

۲Design of Auxiliary controller for STATCOM to Mitigate Subsynchronous Resonance
نویسنده(ها): ، ،
اطلاعات انتشار: کنفرانس بین المللی یافته های نوین پژوهشی درمهندسی برق و علوم کامپیوتر، سال
تعداد صفحات: ۱۳
The series capacitors in long transmission lines are used for achieving many goals, such as increasing the amount of power transfer and stability margin or distributing the active and reactive power between parallel lines. In addition to such benefits, series capacitors cause a serious condition in power systems that are called subsynchronous resonance (SSR).In this paper, at first, the situation of system in which there is a potential of SSR accuracy is detected through a detailed mathematical analysis on study system, and after that, an auxiliary controller is designed and performed to demonstrate the efficiency of the proposed controller for mitigating the oscillations caused by this phenomena. The IEEE first benchmark model for SSR is used as a study system. The eigenvalues of system are carried out using MATLAB software. The transient simulation study of system is performed through PSCAD\EMTDC. The FFT analysis is used on the results of transient simulation in MATLAB to detect the unstable modes of oscillation<\div>

۳Improve damping of subsynchronous Resonance oscillations using static synchronous series compensator equipped with supplementary damping controller
نویسنده(ها): ، ،
اطلاعات انتشار: کنفرانس بین المللی یافته های نوین پژوهشی درمهندسی برق و علوم کامپیوتر، سال
تعداد صفحات: ۱۳
This paper presents the analysis and simulation of subsynchronous resonance (SSR) characteristics of a series compensated system with a static synchronous series compensator (SSSC) based on diode–clamped three level Converter as a part of the total compensation which is called hybrid series compensation (HSC).also, SSSC is used toenhance the stability of a Single Machine Infinite Bus (SMIB) . The effective damping can be achieved bysupplementary damping controller (SDC) is added to the SSSC. The detailed study of SSR is carried out based on eigenvalue analysis and transient simulation. The IEEE first benchmark model (FBM) is considered for the analysis<\div>
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