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The multimedia framework is designed to provide easy to use services for developing multimedia applications based on an embedded platform. With the rapid advances in multimedia technology, various types of codec have been developed. Most of them achieve good performance but construct with complicated algorithms. Moreover, the current computing load of embedded system is still carried by MPU, and its...
This paper investigates the impacts of circuit breaker performance on voltage instability corrective actions for power systems with distributed generations (DGs) under contingencies, and proposes a new computer network-aided strategy for stability improvement. This strategy aims to save a distribution system from imminent voltage collapse due to contingencies occurring in subtransmission system, distribution...
Recently electricity generation from wind power has been increasingly popular worldwide. This paper proposes an adaptive protection and control strategy for interfacing the wind-powered distributed generators into the utility power distribution grids. The requirements for the interfacing are defined according to the IEEE-1547 standards. This paper presents the adaptive interfacing controls and protections...
Induction motors are the workhorse of our industries, continuously applied in new areas with improved performance utilizing modern power electronics and digital controls. This paper proposes a new computationally efficient real-time control for induction motor drives using state-of-the-art digital signal processing (DSP) technology, but without using a speed sensor. This control is named advanced...
Distributed generations (DGs) powered by renewable energy resources have become increasingly popular and starts to show benefits, but their connection to distribution systems brings operation challenges that must be carefully monitored and controlled. This paper proposes a new network-enabled, real-time monitoring strategy for tracking the operating states of the distribution system, with a focus...
Harmonic disturbances caused by power electronic converters for wind-power distributed generation (DG) that may have serious impacts on the power quality of its connecting power distribution systems must be well controlled according to IEEE 1547 Standards. This paper presents a novel adaptive harmonic detection active (AHDA) filter, consisting of an industry-type power electronic inverter controlled...
This paper proposes a new strategy for computer network-assisted corrective actions against short-term and long-term voltage instabilities in the electricity power distribution system connected with renewable-energy distributed generations. The proposed strategy aims to save the distribution system from imminent voltage collapse due to contingencies occurring in the subtransmission network, distribution...
Dispersed generations (DGs) from renewable energy resources are becoming popular and start to show benefits, but their connection to distribution systems brings operation challenges and supply uncertainty that must be carefully monitored and forecasted to provide data for correct controls of the systems. This paper proposes a distributed monitoring and centralized forecasting strategy for distribution...
This paper proposes a new computer network-integrated stability enhancement strategy for electricity power system connected with renewable-energy distributed generations. The proposed strategy aims to save a distribution system from imminent voltage collapse due to contingencies occurring in the subtransmission network, distribution network, or distributed generation circuit, by executing appropriate...
Wind-power distributed generation (DG) converters may inject considerable amount of harmonics into their connected distribution systems that could exceed its connected utility tolerance or IEEE 1547 Std. limits. This paper presents a new adaptive harmonics detection active (AHDA) filter that is designed to suppress harmonics produced by wind DG converters. The AHDA filter consists of an inverter of...
Distributed generation (DG) from wind power becomes increasingly popular worldwide. However, the connection of large wind DGs onto existing radial distribution feeders cause challenges on proper operations of both DGs and their connected feeders. This paper proposes a new Network-enabled Adaptive Protection and Control (NAPC) strategy for properly interfacing wind DGs into distribution grids. The...
Three-level PWM rectifier high pressure, high capacity, and the less power harmonic pollution can achieve unity power factor operation and the prospects are broad. But the reliability is a bottleneck restricting its application. In this paper a high reliability control project based on three microcontrollers (DSP, SCM and CPLD) was presented, including the subdivision of the functions in hardware,...
Induction motors are the workhorse of industries, continuously used in existing and new applications with improved performance utilizing modern power electronics and digital controls. This paper proposes a new computationally efficient real-time control for induction motor drives using state-of-the-art digital signal processing (DSP) technology, but without using a speed sensor. This control is termed...
This paper proposes a new strategy for integrated voltage stability enhancement of transmission and distribution systems. The proposed strategy aims to save a distribution system from an imminent voltage collapse due to contingencies occurring in the transmission or distribution system, by executing appropriate control operations. The operations include coordinated generator controls, load tap changers,...
This paper presents a network-integrated adaptive protection and control of electricity distribution systems connected with dispersed or distributed generations (DGs). A focus of this paper is to demonstrate the effective use of state-of-the-art digital signal processing (DSP) technology for real-time determination of correct protection and control operations, and to illustrate significance of modern...
Distributed generations (DGs) have been increasingly connected on the distribution feeders that impose challenges on traditional feeder protections. This paper proposes a new adaptive strategy for protection of distribution-system feeders connected with DGs using state-of-the-art digital signal processing (DSP) technology. The proposed strategy overcomes DGs-imposed technical challenges on feeder...
Dispersed generations (DGs) from renewable energy resources are becoming popular and start to show benefits, but their connection to distribution systems brings operation challenges and supply uncertainty that must be carefully monitored and forecasted to provide data for correct controls of the systems. This paper proposes a distributed monitoring and centralized forecasting strategy for distribution...
As an addition to bulk electricity generations by utilities, dispersed generations (DGs) from alternative energy resources have become increasingly popular and started to show benefits, but their connection to distribution systems brings operation challenges that must be carefully monitored. This paper proposes a new web-based, real-time monitoring strategy for tracking the operating states of the...
This paper presents an improvement of utility service entrance power quality and energy transfers using an industrial-proven power converter, operated by state-of-the-art digital signal processor (DSP) and controlled with specially designed intelligent software. This service-entrance multiple- functions (SEMF) converter was designed for a Canadian public utility for its service entrance supply innovation...
The stability of bulk power electricity systems has been well studied for decades. Conversely the stability study for newly deregulated distribution power systems with dispersed generations from small conventional or alternate energy sources has been virtually limited. Stability concerns, however, increase rapidly with today's growing demands for open access to power systems for electricity generation...
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