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One of the most important elements in microgrids is the configuration architecture which includes installed capacity, devices location, converter topologies, as well as system control and management strategies. Reliability, security and stability in microgrids require global communication systems in order to provide information for management, supervision, and protection purposes. In this paper, the...
Recent studies have shown that dynamic removal of transmission lines from operation ("Transmission Switching") can reduce costs associated with power system operation. Smart Grid systems introduce flexibility into the transmission network topology and enable co-optimization of generation and network topology. The optimal transmission switching (OTS) problem has been posed in on small test...
Strategically removing transmission lines from service through “optimal transmission switching” (OTS) <citerefgrp><citeref refid="ref1"/> <citeref refid="ref2"/><citeref refid="ref3"/><citeref refid="ref4"/> </citerefgrp> has been shown to produce significant system cost savings. Here, we analyze the results of OTS on the...
A cluster of improved safety indices for the connection models in 10 kV distribution network is raised based on k(n-1+1) safety criterion. These indices apply to describe not only the security of radial connection mode but also ring-type connection mode, such as "N-1" connection, sub-liaison connection, 4??6 connection and so on. Among these indices, the severity index of faults depicts...
Supervisory control and data acquisition (SCADA) systems are used in photovoltaic (PV) power plants for monitoring, control, remote communication purposes. The ingredient of SCADA system in PV power plants is introduced in this paper. In order to improve security and reliability of the SCADA system in PV plants, this paper provides two effective solutions, security access control strategy and redundancy...
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