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A Stochastic Programming Strategy in Microgrid Cyber Physical Energy System for Energy Optimal Operation 被引量：7
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作者 Hepeng Li Chuanzhi Zang +2 位作者 Peng Zeng Haibin Yu Zhongwen Li 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI 2015年第3期296-303,共8页
This paper focuses on the energy optimal operation problem of microgrids (MGs) under stochastic environment. The deterministic method of MGs operation is often uneconomical because it fails to consider the high random... This paper focuses on the energy optimal operation problem of microgrids (MGs) under stochastic environment. The deterministic method of MGs operation is often uneconomical because it fails to consider the high randomness of unconventional energy resources. Therefore, it is necessary to develop a novel operation approach combining the uncertainty in the physical world with modeling strategy in the cyber system. This paper proposes an energy scheduling optimization strategy based on stochastic programming model by considering the uncertainty in MGs. The goal is to minimize the expected operation cost of MGs. The uncertainties are modeled based on autoregressive moving average (ARMA) model to expose the effects of physical world on cyber world. Through the comparison of the simulation results with deterministic method, it is shown that the effectiveness and robustness of proposed stochastic energy scheduling optimization strategy for MGs are valid. © 2014 Chinese Association of Automation. 展开更多
关键词 Electric power distribution Energy resources SCHEDULING Stochastic programming Stochastic systems Uncertainty analysis
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End-to-end Delay Analysis for Mixed-criticality WirelessHART Networks 被引量：2
2
作者 Xi Jin Jintao Wang Peng Zeng 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI 2015年第3期282-289,共8页
WirelessHART, as a robust and reliable wireless protocol, has been widely-used in industrial wireless sensoractuator networks. Its real-time performance has been extensively studied, but limited to the single critical... WirelessHART, as a robust and reliable wireless protocol, has been widely-used in industrial wireless sensoractuator networks. Its real-time performance has been extensively studied, but limited to the single criticality case. Many advanced applications have mixed-criticality communications, where different data flows come with different levels of importance or criticality. Hence, in this paper, we study the real-time mixedcriticality communication using WirelessHART protocol, and propose an end-to-end delay analysis approach based on fixed priority scheduling. To the best of our knowledge, this is the first work that introduces the concept of mixed-criticality into wireless sensor-actuator networks. Evaluation results show the effectiveness and efficacy of our approach. © 2014 Chinese Association of Automation. 展开更多
关键词 Criticality (nuclear fission)
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