M. Karrari
Department of Electrical Engineering Amirkabir University of Technology Tehran, Iran
[ 1 ] - Control Reconfiguration of a Boiler-Turbine Unit After Actuator Faults
Boiler-turbines are one of the most important parts in power generation plants. The safety problem in such systems has always been a special concern. This paper discusses the application of control reconfig uration by fault-hiding approach for a boiler-turbine unit. In Fault-hiding approach, after occurrence of a fault, nominal controller of the system remains unchanged; instead, a reconfigurat...
[ 2 ] - ارائه یک کنترلکننده هوشمند فازی خودتنظیم بهینه شده جهت بهبود کنترل فرکانس ریزشبکه با استفاده از الگوریتم PSO در حضور عوامل غیرخطی
In this paper, a model of frequency response has been used which shows the effect of output power of distributed generation on microgrid frequency. To have better assessment, nonlinear conditions are considered. These nonlinear conditions are delays, dead bands and limiters. A diesel generator controls the Microgrid frequency. It can control frequency influenced by step changing in load. A PI...
[ 3 ] - A New Class of Decentralized Interaction Estimators for Load Frequency Control in Multi-Area Power Systems
Load Frequency Control (LFC) has received considerable attention during last decades. This paper proposes a new method for designing decentralized interaction estimators for interconnected large-scale systems and utilizes it to multi-area power systems. For each local area, a local estimator is designed to estimate the interactions of this area using only the local output measurements. In fact,...
[ 4 ] - Impedance-Based Out-of-Step Protection of Generator in the Presence of STATCOM
This paper presents a novel impedance-based approach for out-of-step (OOS) protection of a synchronous generator. The most popular and commonly used approaches for detecting OOS conditions are based on the measurement of positive sequence impedance at relay location. However, FACTS devices change the measured impedance value and thus disrupt the performance of impedance-based relay function. In...
[ 5 ] - Modified Impedance-Based OOS Protection Based on On-Line Thévenin Equivalent Estimation
In this paper, a novel approach based on the Thévenin tracing is presented to modified conventional impedance-based out-of-step (OOS) protection. In conventional approach, the OOS detection is done by measuring positive sequence impedance. However, the measured impedance may be change due to different factors such as capacitor bank switching and reactive power compensators that it can cause the...
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