Shahgholian, Ghazanfar
Islamic Azad University
[ 1 ] - Comparison of the effects of two flatness based control methods for STATCOM on improving stability in power systems including DFIG based wind farms
Power grids are complex, interconnected and nonlinear systems, and this will be more severe when they are subjected to high wind resources penetration. Static synchronous compensators (STATCOM) are used to improve voltage regulation and to meet grid codes in power systems, including doubly fed induction generators (DFIG) based wind farms. Despite the nonlinear nature of STATCOM, the conventiona...
[ 2 ] - کنترل تطبیقی سیستم های غیرخطی تاخیردار با در نظر گرفتن محدودیت های خروجی
کنترل سیستمها در فرآیندهای صنعتی در معرض مشکلاتی مثل وجود محدودیت بر سیگنالهای سیستم، نامعینی پارامترها، تأخیر زمانی و عیب عملگرها هستند. طراحی کنترل کنندهای که بتواند درضمن ارضای قیود، سیستم را کنترل، با این اثرات مقابله و آنها را جبران کند، توجه زیادی را به خود جلب کرده است. از سوی دیگر، مسئله تأخیر زمانی تا حدی جدی و تاثیرگذار است، که قادر اسهت سیستم را ناپایدار کرده و ف...
[ 3 ] - Optimal Adjustment of Three-Term Controller and Two-Term Compensator Performances in Hydro Power Systems for Load Frequency Control
An important issue with respect to the hydraulic power systems is the frequency stabilization. To design Load Frequency Control (LFC) with high efficiency, control parameters need to be adjusted so that the system frequency remains stable even under changeable conditions. Controlling the frequency and changes in the turbine time constant requires that three term control parameters of Proportion...
[ 4 ] - An Overview of Hydroelectric Power Plant: Operation, Modeling, and Control
Renewable energy provides twenty percent of electricity generation worldwide. Hydroelectric power is the cheapest way to generate electricity today. It is a renewable source of energy and provides almost one-fifth of electricity in the world. Also, it generates electricity using a renewable natural resource and accounting for six percent of worldwide energy supply or about fifteen percent of th...
[ 5 ] - Adaptive Protection Based on Intelligent Distribution Networks with the Help of Network Factorization in the Presence of Distributed Generation Resources
Factorizing a system is one of the best ways to make a system intelligent. Factorizing the protection system, providing the right connecting agents, and transmitting the information faster and more reliably can improve the performance of a protection system and maintain system reliability against distributed generation resources. This study presents a new method for coordinating network protect...
[ 6 ] - Detection of Fatigue from Electroencephalogram Signal During Neurofeedback Training
Timely diagnosis of fatigue helps to improve the quality and effectiveness of neurofeedback training. Neurofeedback training (NFT) is a method that can change brain activity by altering brain signal fluctuations and teaches individuals to produce or reproduce their brain activity patterns in order to improve performance. Neurofeedback training has been widely utilized over the recent years owi...
[ 7 ] - Providing a protection method to support distributed generation against transient voltage instability
The analysis of transient stability in electric power systems and the penetration coefficient of scattered productions play important roles in the regulation of protective equipment, so these parameters should be considered two main factors in the electrical protection of power networks. Overcurrent relays are used as one of the simplest and most effective solutions for power system protection....
نویسندگان همکار