08-16-2017, 08:42 PM
A Remote Control Centre (RCC) is set up near the Traffic Control Office on each Division having electric traction, to work in close liaison with the traffic control. The RCC includes the main control room, equipment room, Uninterrupted Power Supply (UPS) room, Remote Control Laboratory and Battery Room and is the nerve centre of the Traction Power Control.
Types Of Equipment:
The following types of Remote Control Equipment are mainly in use on Indian Railways at present:
(i) Frequency Modulated Voice Frequency Telegraph (FMVFT), Strowger type equipment for supervisory control.
(ii) Supervisory Control And Data Acquisition (SCADA) systems with Microprocessor based equipment and/or Computer based equipment.
The FMVFT equipment was in use for all electrification schemes prior to 1980. Being mainly all relay system, the equipment has become outdated although some Remote Control Centres still continue to operate on this system. Salient features of the system are indicated at paras 20401 to 20406.
The SCADA equipment based on State of the art technology has come into use after 1980. Considering the fast growth and development of computer based equipment, newer types with enhanced capabilities and new makes are being introduced. Addional facilities at each new RCC is also natural as new features get incorporated.
The report is about the design, development & study of protection & supervisory control and data acquisition (SCADA) system to meet special requirements of 25 kV AC traction system on Mumbai suburban section. The task of supervision of machinery and industrial processes on a routine basis can be a tiring job. Always being on the side of a machine or being on a 24x7 patrol duty around the equipment performing checks would be wastage of the expertise of a person on trivial task. The existing scenario of protection and SCADA systems on IR and improvements thereupon to develop the new system for Mumbai has been covered. The merits of integration of numerical relays with Remote Terminal Units (RTU) , a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA (supervisory control and data acquisition) system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects. The basic objective of SCADA Systems is to monitor industrial equipments and keep logs on all the information transmitted and received by the system. These systems have greatly helped in reducing the amount of manual labour required