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Ruju Fang 1,2 and Jianping Wang 1 and Wei Sun 1 and Qiyue Li 1
Academic Editor:Daniel G. Costa
1, School of Electrical Engineering and Automation, Hefei University of Technology, Anhui 230009, China
2, School of Electrical Engineering, Xuchang University, Henan 461000, China
Received 28 August 2015; Revised 5 December 2015; Accepted 7 December 2015
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
1. Introduction
Smart grid can be regarded as a power system that uses two-way communication and information technology to realize power generation, delivery, and consumption, where real-time monitoring, advanced sensing, communication, analysis, and control are integrated and applied to ensure the safety, reliability, and efficiency of the power system [1]. Therefore, obtaining real-time and reliable information is a key factor to ensure stable delivery of power energy from the generation units to the end users in the smart grid [2].
Many core technologies need to be developed to enable the features of smart grid. Among them, one critical technology is real-time monitoring and control of power system [3-5]. Because of low power consumption, fast self-organization, and superior cooperation characteristics, WSNs have extensive application prospects in remote monitoring of equipment, fault diagnosis, and remote wireless meter reading [6-10].
Sensor Network Design for a Secure National Electric Energy Infrastructure sponsored by National Science Foundation, USA, Integrating the Physical with the Digital World of the Network in the Future sponsored by European Seventh Framework Programme, and Researches on Wireless Sensor Networks in Power Grid Communication sponsored by National Natural Science Foundation of China have all conducted research on the application of wireless sensor network in power system since 2004. In 2010, "NIST Framework and Roadmap for Smart Grid Interoperability Standards" listed IEEE802.15.4 as one of recommended standards. According to IEEE802.15.4 standard, communication data stored in buffer queue of node have the same priority and obey first come first serve rule [11]. In fact, communication data have different requirements for communication time according to the power system specification, where they are divided into three types: the data requiring shorter communication time, the data requiring longer time to complete communication process, and the data having...