Substation Automation System

Substation Automation Solutions (SAS) for transmission utility sector which deals with bay oriented, distributed control solutions & RTU based solutions. This solution is provided along with Protection business and also as a separate model for existing substations. The SAS includes the integration of various Intelligent Electronic Devices (IEDs) like protective relays and multi-function meters besides data management facilities like process monitoring, supervisory control, alarming, reporting and data archiving and control of the substation implemented on the latest IEC61850 protocol standards.

 

Power System Automation

 

Data acquisition

Data acquisition refers to acquiring, or collecting, data. This data is collected in the form of measured analog current or voltage values or the open or closed status of contact points. Acquired data can be used locally within the device collecting it, sent to another device in a substation, or sent from the substation to one or several databases for use by operators, engineers, planners, and administration.

 

SupervisionComputer processes and personnel supervise, or monitor, the conditions and status of the power system using this acquired data. Operators and engineers monitor the information remotely on computer displays and graphical wall displays or locally, at the device, on front-panel displays and laptop computers.ControlControl refers to sending command messages to a device to operate the I&C and power-system devices. Traditional supervisory control and data acquisition (SCADA) systems rely on operators to supervise the system and initiate commands from an operator console on the master computer. Field personnel can also control devices using front-panel push buttons or a laptop computer

In addition, another task is power-system integration, which is the act of communicating data to, from, or among IEDs in the I&C system and remote users. Substation integration refers to combining data from the IED’s local to a substation so that there is a single point of contact in the substation for all of the I&C data.

Power-system automation processes rely on data acquisition; power-system supervision and power-system control all working together in a coordinated automatic fashion. The commands are generated automatically and then transmitted in the same fashion as operator initiated commands.