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Communication Infrastructure for Smart Microgrids
Published in Sasi K. Kottayil, Smart Microgrids, 2020
With the advent of new communication technologies and improvements in the existing ones, ICT is turning out to be the backbone of automation in power systems, paving the way to the realization of the smart grid. As power system automation demands large amounts of message passing among the widely distributed nodes in real time, the challenge involved in making a power system “smart” is manifold. The data that is generated by distributed devices must be communicated to multiple nodes at different hierarchical levels of operation to meet the large spectrum of applications with diverse requirements in the new grid. The choice of communication technology is not easy, as there are many technologies that can potentially suit the requirements of a given application and therefore the optimized selection needs a careful performance analysis. As the communication requirements of applications across different sectors and hierarchical levels of smart grid are largely diverse, the end-to-end communication architecture in a smart grid system will be a heterogeneous one. It poses a serious challenge to ICT integration within power systems (Figure 3.4).
Communication Protocols for Power System Automation
Published in Richard Zurawski, Industrial Communication Technology Handbook, 2017
Peter Palensky, Friederich Kupzog, Thomas Strasser, Matthias Stifter, Thomas Leber
The typical power system automation architecture starts from operation centers, connecting the user interfaces of the SCADA systems via a wide-area network (WAN) connection typically isolated from other communication networks such as enterprise local-area network (LAN) or Internet with substations and associated field devices (sensors, switches, and protection devices). A wide range of protocols are used within this architecture: IEC 60870-5 within the WAN, Modbus, DNP3, IEC 61850 within substations, RS485, RS232, wired connections, field buses on the field level, and many others. In the following, a light will put on the most widely used candidates among these protocols. There is, however, usually just a very simple paradigm on the application layer: each data point is connected from its physical position like a virtual connection to the SCADA system.
Short-term load forecasting based on EEMD-Adaboost-BP
Published in Systems Science & Control Engineering, 2022
Wenshuai Lin, Bin Zhang, Hongyi Li, Renquan Lu
Accurate load forecasting is crucial for the reliable operation of power systems and economic growth. It is an important basis for power supply enterprises to arrange power production scheduling and improve the level of power system automation, which is conducive to energy conservation and emission reduction (Amjady, 2001; Hinojosa & Hoese, 2010). Therefore, the research of power system load forecasting has attracted extensive attention from scholars and produced a series of research results (Alfuhaibdc et al., 1997; Dedinec et al., 2016; Hernández et al., 2014; Ma et al., 2017; Xiaoyu et al., 2015).