Reliability of data transmission is a fundamental problem in wireless communications. Fading in wireless channels causes the signal strength to vary at the receiver and this results in loss of data packets. To improve the reliability, automatic repeat request (ARQ) schemes were introduced. However these ARQ schemes suffer from a reduction in the throughput. To address the throughput reduction, ...

Development of every society is incumbent upon energy sector’s technological and economic effectiveness. The electricity industry is a growing and needs to have a better performance to effectively cover the demand. The industry requires a balance between cost and efficiency through careful design and planning. In this paper, a two-stage stochastic programming model is presented for the design o...

The power system in our country is very complex and so monitoring of transmission lines is a difficult task for a human to perform. Managing overhead transmission assets such as towers, conductors and insulators are very costly and sometimes prove to be dangerous. Many lines are located in remote and rugged environments. Usually the workers who inspect these lines conduct helicopter surveys or ...

17 ABSTRACT From the power systems perspective, the world has experienced dramatic changes over the past few years. Global climate warnings associated with economic progress and other factors have led the power systems to undergo changes, mainly affecting the way they are designed, planned, operated and managed. A significant amount of activity is underway on the technological, policy and econo...

MEMS-based timing devices offer high reliability (including AEC-Q100 certification for automotive use), extended operating temperatures, small size, and low power consumption. Video surveillance, automotive ADAS, general industrial applications, and data transmission to 10 Gbps are prime areas of usage today. The next milestone will be next-generation MEMS resonators that achieve very low phase...

deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. in this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. also, because of power market and generators’ forced outages stochastic behavior, monte carlo simulation is used for reliability evaluation. generation reli...

The Smart Grid concept is conceived as a means to optimize the operation and to improve the reliability of the electric delivery system. As environmental concerns and energy consumption continue to increase, utilities are looking at cost effective strategies for improved network operation and consumer consumption. Smart Grid is a collection of next generation power delivery concepts that includ...

this paper presents a new centralized adaptive method under frequency load shedding. sometimes, after initial frequency drop following severe disturbances, although the system frequency returns to its permissible value, however, the system might become unstable due to voltage problems. in this regard, the paper proposes a new centralized adaptive load shedding method to enhance the voltage stab...

when power systems are expanded and connected together with weak tie lines, the low-frequency oscillations are increased and the stability margin of the power system decreases. therefore, when designing the transmission system to be used, it is necessary to maintain the dynamic stability of the power system, and to make sure to have the most possible stability margin. sssc is a facts device con...

A vital attribute of electrical power network is the continuity of service with a high level of reliability. This motivated many researchers to investigate power systems in an effort to improve reliability by focusing on fault detection, classification and localization. In this paper, a new protective relaying framework to detect, classify and localize faults in an electrical power transmission...