Peak power demand reduction under moving block signalling using an expert system

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Peak power demand reduction under moving block signalling using an expert system

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The concept of moving block signallings (MBS) has been adopted in a few mass transit railway systems. When a dense queue of trains begins to move from a complete stop, the trains can re-start in very close succession under MBS. The feeding substations nearby are likely to be overloaded and the service will inevitably be disturbed unless substations of higher power rating are used. By introducing starting time delays among the trains or limiting the trains' acceleration rate to a certain extent, the peak energy demand can be contained. However, delay is introduced and quality of service is degraded. An expert system approach is presented to provide a supervisory tool for the operators. As the knowledge base is vital for the quality of decisions to be made, the study focuses on its formulation with a balance between delay and peak power demand.

Inspec keywords: signalling; traffic engineering computing; power engineering computing; rapid transit systems; substations; expert systems; railways

Other keywords: peak power demand reduction; train queue re-starting; starting time delays; supervisory tool; expert system; peak energy demand; expert system approach; mass transit railway systems; moving block signalling; train acceleration rate limiting; feeding substations

Subjects: Traffic engineering computing; Expert systems and other AI software and techniques; Power engineering computing; Transportation; Substations

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