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Li Q.,Southwest Jiaotong University | Chen W.,Southwest Jiaotong University | Wang Y.,Nanyang Technological University | Liu S.,Chengdu Electric Power Bureau | Jia J.,Nanyang Technological University
IEEE Transactions on Industrial Electronics | Year: 2011

In order to improve the inherent drawbacks of particle swarm optimization (PSO), an effective informed adaptive PSO (EIA-PSO) algorithm that has better equilibrium characteristic between global search and local search is proposed. In this paper, an electrochemical-based proton exchange membrane fuel cell (PEMFC) mechanism model suitable for engineering optimization is developed, and a parameter-identification-technique-based EIA-PSO for this mechanism model is presented. In order to verify the validity of the advanced method, comparisons between experimental data and simulation data are carried out. The results demonstrate that EIA-PSO can make the mechanism model with identified parameters fit the experimental data with higher precision even in the presence of measurement noise. Therefore, EIA-PSO is an optional effective technique for identifying the parameters of the PEMFC mechanism model. © 2010 IEEE. Source


Ma J.,North China Electrical Power University | Li J.,Chengdu Electric Power Bureau | Wang Z.,North China Electrical Power University | Yang Q.,North China Electrical Power University
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2010

A novel wide-area back-up protection to identify fault location is proposed based on fault correlation factor (FCF). Under the normal condition of the power system, the protection correlation region (PCR) is initially formed on the basis of the network topology and the phase measurement unit (PMU) placement. By using switching information of the circuit breaker and heuristic search algorithm, the original PCR is then updated rapidly. After the fault occurs, by analyzing the fault steady state component of differential current within each PCR, the fault correlation region is confirmed and then the FCF is calculated in real time to locate the fault. The simulation results of 10-generator 39-bus system verify that this method is immune to the system operation condition and is able to rapidly, sensitively, and reliably identify fault location with limited measurement points and less computation. © 2010 Chinese Society for Electrical Engineering. Source


Zhang X.,Yanshan University | Dong X.,Chengdu Electric Power Bureau
Dianwang Jishu/Power System Technology | Year: 2013

There are two objective functions in the proposed multi-objective economic dispatching model for low-carbon power system containing wind farms: generation cost and carbon emission. Considering economy of power system the carbon emission should be reduced; considering the risk brought by wind farms, the risk cost should be added in the generation cost; to achieve the energy-saving and carbon emission reduction, the output of wind farms should be increased while the economy of power system is ensured. The proposed multi-objective economic dispatching model for low-carbon power system containing wind farms is solved by improved multi-objective particle swarm optimization algorithm. Simulation results of IEEE 13-machine system show that the proposed multi-objective economic dispatching model is correct and effective. Source


Zhou S.,Chengdu Electric Power Bureau
Advanced Materials Research | Year: 2012

Research and development of embedded systems is the hot information technology and the graphical user interface (GUI) is the most important part of human-computer interaction interface. These embedded GUI system has been widely used because of its strong and powerful functionality. But many times, it is necessary to sacrifice performance for its versatility. In this paper, the embedded GUI systems based on the message mechanism is study considering the short of current embedded GUI systems. The novel method of a message-driven application framework is suggested to solve the problem of the current message mechanisms for the implementation. Meanwhile, a circular queue algorithm is given in order to achieve messaging unit. Then, the message has been classified considering of efficiency. In the end, the design example of personal assistant is given. © (2012) Trans Tech Publications. Source


Li Q.,Southwest Jiaotong University | Chen W.,Southwest Jiaotong University | Li Y.,Southwest Jiaotong University | Liu S.,Chengdu Electric Power Bureau | Huang J.,Southwest Jiaotong University
International Journal of Electrical Power and Energy Systems | Year: 2012

In order to enhance the fuel economy of hybrid vehicle and increase the mileage of continuation of journey, a fuzzy logic control is utilized to design energy management strategies for fuel cell/battery (FC + B) hybrid vehicle and fuel cell/battery/ultra-capacitor (FC + B + UC) hybrid vehicle. The models of hybrid vehicle for FC + B and FC + B + UC structure are developed by electric vehicle simulation software ADVISOR which uses a hybrid backward/forward approach. The results demonstrate that the proposed control strategy can satisfy the power requirement for four standard driving cycles and achieve the power distribution among various power sources. The comprehensive comparisons with the power tracking control strategy which is wide adopted in ADVISOR verify that the proposed control strategy has better rationality and validity in terms of fuel economy and dynamic property in four standard driving cycles. Therefore, the proposed strategy will provide a novel approach for the advanced energy management system of hybrid vehicle. © 2012 Elsevier Ltd. All rights reserved. Source

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