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Main Control System at MTR – Its Evolution and Development

Over the last decade, Railway Operations have become ever more sophisticated. In a modern railway, there are more than 20 systems to be housed in a giant console in the Station Control Room of every station as well as in the Operations Control Centre. On the other hand, ergonomics and optimal staffing level are critical success factors to the operation of a railway like MTR Corporation. To address the above issues, an integrated Supervisory Control And Data Acquisition (SCADA) system was introduced for Lantau Airport Railway (LAR) that started service in mid 1998. As a result, Main Control System (MCS) emerged. Such approach was also applied in Tseung Kwan O Line (TKL) that started service in August 2002. Main Control System is a new provision in modern railways and its history is less than 10 years. The paper compares the two generations of MCS developed for LAR and TKL. The sub-systems, configuration and architecture, equipment provision, key design information, and alarm levels defined in the system are compared. Finally, the evolutionary changes are summarised and the paper concludes that there will be continuous improvements to the MCS model due to evolutionary changes in railway operation as well as technology advancements.