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22nd International Conference on Information Fusion (FUSION)

作者： Qiu, Yi Zhou, Jie Sichuan Univ Coll Math Chengdu 610064 Sichuan Peoples R China

ISBN: (纸本)9780996452786

Optimizing an aggregate function over a multi-agent network based on diffusion strategies calls for node collaborations, where each sensor exchanges information with their predefined neighbors within its transmission/reception range, and then combines them linearly with fixed and non-adaptive scalar weights to obtain a consensus solution. However, the transmission/reception process may be corrupted by random delays due to imperfect network environment. This paper proposes a distributed method to obtain the adaptive weights considering the occurrence of random one-step delays, which are depicted by Bernoulli random variables with known probability distributions. Then, an adaptive diffusion algorithm for optimizing the aggregate function is presented. Finally, numerical simulations are provided for validating the proposed method.

关键词： Multi-agent network diffusion strategies consensus distributed method adaptive weights

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A fully distributed ADMM-based dispatch approach for virtual power plant problems

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APPLIED MATHEMATICAL MODELLING 2018年 58卷 300-312页

作者： Chen, Guo Li, Jueyou Univ Newcastle Sch Elect Engn & Comp Callaghan NSW 2308 Australia Chongqing Normal Univ Sch Math Sci Chongqing 400047 Peoples R China

In this paper, a fully distributed approach is proposed for a class of virtual power plant (VPP) problems. By characterizing two specific VPP problems, we first give a comprehensive VPP formulation that maximizes the economic benefit subjected to the power balance constraint, line transmission limits and local constraints of all distributed energy resources (DERs). Then, utilizing the alternating direction method of multipliers and consensus optimization, a distributed VPP dispatch algorithm is developed for the general VPP problem. In particular, Theorem 1 is derived to show the convergence of the algorithm. The proposed algorithm is completely distributed without requiring a centralized controller, and each DER is regarded as an agent by implementing local computation and only communicates information with its neighbors to cooperatively find the globally optimal solution. The algorithm brings some advantages, such as the privacy protection and more scalability than centralized control methods. Furthermore, a new variant of the algorithm is presented for improving the convergence rate. Finally, several case studies are used to illustrate the efficiency and effectiveness of the proposed algorithms. (C) 2017 Elsevier Inc. All rights reserved.

关键词： distributed method ADMM Virtual power plant distributed energy resources

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Research on distributed autonomous time reference maintain method of navigation constellation

Research on distributed autonomous time reference maintain m...

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第八届中国卫星导航学术年会

作者： Daoning Yang Gang Li Ying Liu Jun Yang Yinan Meng Xianyu Zhang College of Mechatronics Engineering and Automation National University of Defense Technology Beijing Institute of Tracking and Telecommunications Technology

ISBN: (纸本)9789811045936

Satellite navigation system to provide users with high-precision positioning, navigation and timing services, requires a uniform high-precision time *** the navigation system is operating in the normal mode, this reference is maintained by the ground and measured through the satellite-ground link and modify the on-board clock parameters to ensure the uniformity of the entire system time *** the autonomous navigation mode, the navigation constellation to leave the ground support, need to maintain the time reference *** paper analyzes the maintenance method of autonomous time reference based on inter-satellite observation and designs a distributed autonomous time reference maintenance *** satellite clock error is used as the basic observation to compose the system measurement *** to the system state equation, each satellite uses Kalman filter to estimate and update its own clock parameters to maintain the constellation time *** results show that the proposed algorithm can maintain the uniform time reference of navigation constellations.

关键词： Inter-satellite link time reference GNSS distributed method

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Two-step market clearing for local energy trading in feeder-based markets

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JOURNAL OF ENGINEERING-JOE 2019年第18期2019卷 4775-4779页

作者： Khorasany, Mohsen Mishra, Yateendra Ledwich, Gerard Queensland Univ Technol Sch Elect Engn & Comp Sci Brisbane Qld Australia

Recent innovations in information and communication technologies (ICT) provide new opportunities and challenges for the integration of distributed energy resources (DERs) into the energy supply system as active market players. By increasing the integration of DERs, the novel market platform should be designed for these new market players to provide correct incentives for them to join the market and follow market rules. In this paper, a feeder-based market is proposed for local energy trading among prosumers and consumers in the distribution system to share energy with other players in the local market and with neighbourhood areas. A two-step market clearing (2SMC) mechanism is proposed for market clearing, in which in the first step, each local market is cleared independently to determine the market clearing price and in the second step, players can trade energy with neighbourhood areas. In comparison to a centralised market, the proposed method is scalable and reduces computation overheads, because instead of clearing market for a large number of players, the market is cleared for a fewer number of players. Case studies demonstrate the efficiency and effectiveness of the proposed market clearing method in increasing social welfare and reducing computation time.

关键词： power markets pricing distributed power generation feeder-based market distributed energy resources energy supply system market surplus market clearing price centralised market energy trading market players electricity market information and communication technologies DER distribution system two-step market clearing mechanism distributed method Lagrangian multipliers central computation centre private information

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distributed Power Service Restoration method for Smart Distribution Grid

Distributed Power Service Restoration Method for Smart Distr...

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IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

作者： Xian GuoFu Cong Wei Kang QiBao Sheng YaRu Shandong Univ Jinan Peoples R China

ISBN: (纸本)9781509054183

In view of the problems existing in the traditional centralized power service restoration method a distributed power service restoration method for smart distribution grid is proposed. The method is based on the smart terminal unit (STU) arranged at each measuring point of the distribution grid, and through the information interaction and cooperation between the STU, the power service restoration task is completed. Combined with characteristics of distributed system and requirements of service restoration, distributed management of network topology information, network topology equivalence method, searching method of network topology and the simplified calculation method of the constraint conditions are analyzed and studied. The principle of reciprocating search is put forward, and the determination of the theoretical maximum restoration range and the determination of the scope of the actual restoration are completed. A simplified method for solving the constraint conditions of restoration is proposed based on Thevenin equivalent.

关键词： Smart distribution grid power service restoration distributed method topology search power network equivalence

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Agent-Based Approach to distributed Information and Control System Reconfiguration

Agent-Based Approach to Distributed Information and Control ...

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Conference on Computational methods in Systems and Software (CoMeSySo)

作者： Melnik, Eduard Klimenko, Anna RAS SSC Informat Technol & Control Proc Dept Rostov Na Donu Russia Southern Fed Univ Sci Res Inst Multiprocessor Comp Syst Taganrog Russia

ISBN: (纸本)9783319676180

A problem of distributed information and control system (DICS) dependability is relevant nowadays. The DICSs with the performance redundancy and decentralized dispatching implemented by multiagent system are in the scope of this paper. The peculiarities of this class of DICSs require special approaches to the monitoring, control and reconfiguration procedures. The agent-based approach to the DICS reconfiguration is represented. It takes into account a potential of performance redundancy in the aspect of fault-tolerance. The configuration forming problem is solved when it is required by local interactions between software agents via constraint satisfaction problem solving. The paper contains the brief review of the DICS dependability problem and related works, description of performance redundancy and reconfiguration distributed procedure. Two-step agent-based approach to DICS reconfiguration described in details, algorithms of agent interactions and some simulation results are represented and discussed briefly.

关键词： Agent interaction distributed method distributed algorithms Reconfiguration distributed information and control system Control system

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Status and Analysis of Fault Diagnosis in Wireless Sensor Networks

Status and Analysis of Fault Diagnosis in Wireless Sensor Ne...

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作者： Yu-jie ZHU Ying-chun ZHONG Fang LI Jin-chao XIAO Guangdong University of Technology School of Automation Guangdong University of Finance & Economy Shenyang Institute of Automation Chinese Academy of Sciences

Wireless sensor networks(WSN) have great potential to support various applica-tions such as military, intelligent transportation, environmental monitoring, medical and health fields etc. It is the important for timely and accurate diagnosis of wireless sensor network faults to be the guarantee of reliability and stability. Based on the domestic and international research status of fault diagnosis technology, this paper summarized and analyzed the source and classification of wireless sensor network faults. And then the centralized techniques and distributed algorithms in the fault detection techniques were elaborated according to the main position of the diagnosis fault. Finally, the challenges of future research and development of sensor network fault diagnosis were discussed.

关键词： Wireless Sensor Network Fault Diagnosis Centralized method distributed method

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A mutual-selecting market-based mechanism for dynamic coalition formation

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INTERNATIONAL JOURNAL OF ADVANCED ROBOTIC SYSTEMS 2018年第1期15卷

作者： Xie, Bing Chen, Shaofei Chen, Jing Shen, LinCheng Natl Univ Def Technol Artificial Intelligence Lab Changsha Hunan Peoples R China

This article presents a novel market-based mechanism for a dynamic coalition formation problem backgrounded under real-time task allocation. Specifically, we first analyze the main factors of the real-time task allocation problem, and formulate the problem based on the coalition game theory. Then, we employ a social network for communication among distributed agents in this problem, and propose a negotiation mechanism for agents forming coalitions on timely emerging tasks. In this mechanism, we utilize an auction algorithm for real-time agent assignment on coalitions, and then design a mutual-selecting method to acquire better performance on agent utilization rate and task completion rate. And finally, our experimental results demonstrate that our market-based mechanism has a comparable performance in task completion rate to a decentralized approach (within 25% better on average) and a centralized dynamic coalition formation method (within 10% less on average performance).

关键词： Dynamic coalition formation distributed method market-based mechanism mutual-selecting multi-agent

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A distributed Framework for Stability Evaluation and Enhancement of Inverter-Based Microgrids

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IEEE TRANSACTIONS ON SMART GRID 2017年第6期8卷 3020-3034页

作者： Song, Yue Hill, David J. Liu, Tao Zheng, Yu Univ Hong Kong Dept Elect & Elect Engn Hong Kong Hong Kong Peoples R China Univ Sydney Sch Elect & Informat Engn Sydney NSW 2006 Australia

In this paper, a distributed framework is established to evaluate and improve the small-disturbance stability of a microgrid with inverter-based distributed generators (DGs). First, we propose a distributed protocol such that a selected pilot DG bus collects necessary data from finite steps of communication between physically neighboring buses. Then, we design an algorithm that enables the pilot DG bus to reconstruct the system dynamic Jacobian matrix from the data and carry out stability evaluation locally. Further, if the evaluation result does not meet a preset requirement, we develop a distributed successive linear programming algorithm to enhance the system stability via sparse communication among a minority of DG buses. The proposed algorithms have high efficiency and versatility-they apply to lossy microgrids with either radial or meshed topology under various operation scenarios. Moreover, the control actions for stability enhancement preserve the predefined economic dispatch and power sharing schemes. The results are validated by the case study of a 14-bus microgrid.

关键词： Microgrid small-disturbance stability distributed method inverter-based distributed generator

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Joint Channel Assignment and Routing Protocol for Cognitive Radio Wireless Sensor Networks

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WIRELESS PERSONAL COMMUNICATIONS 2017年第1期97卷 41-62页

作者： Jun, Yi-Han Wu, Yin Song, Jun Nanjing Forestry Univ Coll Informat Sci & Technol Nanjing 210037 Jiangsu Peoples R China

Multi-hop transmissions over a single channel that is shared by all the nodes in a network limit the throughput of conventional multi-hop wireless sensor networks. To improve the performance of these networks, the use of multiple channels has been proposed. Channel assignment is an important problem in multi-channel wireless sensor networks;it asks the question of how channels should be assigned so that the network performance in maximized. Many existing channel assignment scheme seek to improve network performance by trying to reduce interference. However, it is not easy to measure the actual amount of interference in a network. We tackled the channel assignment problem from a novel approach. Instead of distributing the nodes, links or network interfaces to different channels to reduce interference, we try to assign as many channels as possible to the links. A new distributed scheme is proposed and we show that is outperforms over comparable schemes.

关键词： Channel assignment Routing protocol Cognitive radio wireless sensor networks distributed method

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