Transmission Switching in the RTS-96 Test System

C. Barrows and S. Blumsack

IEEE Transactions on Power Systems (May 2012)

DOI: 10.1109/TPWRS.2011.2170771

Strategically removing transmission lines from service through “optimal transmission switching” (OTS) has been shown to produce significant system cost savings. Here, we analyze the results of OTS on the RTS-96 network to identify network characteristics that may help identify solution sets and reduce computational complexity. Our initial analysis suggests that the majority of the cost savings from OTS arises from switching a limited number of branches. This finding suggests that the speed of the OTS algorithm, which has been implemented as a mixed-integer program, could be improved by limiting switching operations to a smaller number of pre-screened branches.

keywords: computational complexity;integer programming;power system identification;power transmission economics;power transmission lines;OTS;RTS-96 test system;computational complexity reduction;mixed-integer program;optimal transmission switching;solution set identification;system cost saving;transmission line;Limiting;Power system reliability;Power transmission lines;Reliability;Security;Switches;Transmission line measurements;Complex networks;smart grid;transmission switching

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