Switchyard forms an integral part of any power plant i.e. Industrial CPP, Thermal Power Utilities, Gas Turbines based power plants or Hydel power plants. These power plants have their main plant equipment integral controls (Boiler / Turbine / Gas Turbine / Hydro Turbine) as well as plant DCS System (BoP / Station C & I). While the entire power plant is integrated at the DCS level, true unification is achieved by incorporating / integrating switchyard controls (SCADA) also in the plant DCS.

BHEL has incorporated switchyard SCADA on IBS hardware (Multibus compatible) and integrated with main plant DCS in a few projects. With the Technical Collaboration Agreement for the state-of-the art maxDNA system, BHEL is is now well position to provide this unification on the same platform as the plant level DCS system.

The Supervisory control and data acquisition system (SCADA) of switchyard consists of Operator Stations, Engineer's Stations, Historical Storage, Computers and associated peripherals and the switchyard bay control systems interconnected through a high speed network . The system constitutes several operator work stations and engineer's work station with high resolution Color display monitors, touch screen, function key board, mouse, track ball and printers.

The system collects digital and analog information available throughout the plant and presents information in various graphic displays, alarms, logs, reports. 

The operator can perform control via CRT.

Features

· Monitoring of status of switchyard equipment like isolators, breakers, ground switches
· Issue of close/open commands to isolators, breakers
· Monitoring of system parameters like voltage, current, frequency, MW, MVAR, energy
· Time stamping of alarms, events, protective relay operations
· Presentation of information useful to operator in different forms
· Report generation
· Historical storage and retrieval
· Remote control and monitoring from Load dispatch centre through fibre optic/PLCC communication

KOVILKALAPPAL Combined cycle power project (based on IBS hardware)
PERUNGULAM Combined cycle power project (based on IBS hardware)
Dhuvaran Combined cycle project (maxDNA)
Kuttalam Combined cycle project (maxDNA)