The major challenge facing most power plants is ensuring the continuous provision of reliable and consistent power. Substations are the building blocks for any grid, and without adequate maintenance and protection, they can quickly come tumbling down. Increasing competition is driving many power providers to focus on power system productivity and quality, with a view to reducing costs and increasing customer satisfaction.
The interior of a substation is an interesting but dangerous place. Typically large transformers are mounted outside in metal boxes and connected to power lines. They also have control devices which includes capacitors and switches mounted on a usually wooden board. For decades, these control devices had to adjusted manually by an operator in order to make necessary changes. The modern substation is gradually getting more and more intelligent and thus accumulates a lot of data. Filtering, analyzing, and responding to these data can be quite tasking and can lead to a lot of quality problems and flow fluctuations in smart substations. Substation automation entails having an intelligent, interactive power distribution network. Automated substations generally function under two integrated subsystems – Control System and Protective systems
The task of control system in an automated substation includes data collection, scanning, event reporting and recording; voltage control, power control, frequency control, other automatic and semiautomatic controls etc. Another function of the control system involves the various switching actions like auto reclosing of line circuit breakers, operation of sectionalizing switches and so on are performed by remote command from control room. To effective ensure communication among devices and sensors, you will need to overlay an intelligent communications systems and an IP based computer network.
On the other hand the protective functions includes the sensing of abnormal conditions, annunciation of abnormal conditions, alarming, automatic tripping, back up protection and protective signaling etc.
Why you should upgrade from your manually operated substation to an automated substation
1. Increased performance: Automation coupled with intelligence generally increases performance of your power plants as abnormal conditions can be detected, analyzed and solved easily.
2. Reliability of electrical protection:
3. Accuracy the record of data and events which comes in useful in carrying out detailed electrical fault analyses, automated systems also displays substation information in real time, back up and restoration of data is also possible.
4. Remote switching and advanced supervisory control: For safety reasons, remote switching and supervisory control can be accomplished.
5. Increased integrity and safety of electrical power networks including advanced interlocking functions.
6. Assurance of safety in hazardous conditions: This is based on the condition that substations are built to standards and are certified.
7. These solutions would ensure lower maintenance and operational costs.
What requirements should you consider when selecting an automated system?
• The system should be adaptable to any vendor hardware and supports protocols available in the industry including IEC 61850, DNP3.0, and IEC60870 series
• It should be secure, reliable and dependable
• It should have the ability to connect and integrate existing power system equipment with virtually any HMI,SACADA or Energy Management System
• It should incorporate an architecture that minimizes wiring.
• It should be flexible and easy to set up by the user.
GIL Can offer services on Projects involving electrical engineering design and procurement of materials and equipment such as protection, control and monitoring systems in Substations and switchyards. Inspection, testing, and commissioning can be included as well with equipment packages.
We can provide Protection and Control Systems in pre-fabricated buildings or a custom building constructed on site.
If a turnkey system is required, GIL offers surveys, soil tests, engineering, and design, furnish equipment and components, and construct the substation, test and commission.
Furthermore, GIL can perform required power system studies in support of the project. For further information kindly visit our website www.gilautomation.com