SLDC Projects is mainly looking after implementation, Updation, Up-keep and maintenance of SCADA system in PSTCL. In addition other jobs such as implementation of ABT based Boundary Metering scheme in Punjab, Procurement of RTUs for PSTCL substations and maintenance & hosting of SLDC Website etc. are also being handled by this office.

Projects being handled by SLDC(P)


Supervisory Control and Data Acquisition /Energy Management System (SCADA/EMS) commissioned by M/s. Power Grid Corporation of India Limited (PGCIL) in Northern Region on Unified basis is operational at SLDC, Patiala since 2002 and real time status of the grid is available to the load dispatchers around the clock which further helps them to take corrective actions for operating the grid in efficient manner. For better viewing of data at control centre, a large display screen i.e. Video Projection System (VPS) has been installed. Further to ensure Uninterrupted Supply to the SCADA/EMS hardware, the provision of Uninterrupted Power Supply (UPS) of sufficient capacity has been made at the control centre. Existing SCADA/EMS related hardware and software supplied by M/s Areva has been upgraded by M/s Siemens System. Provision of backup control centre for main SLDC control centre has been made under the new system installed by M/s Siemens Ltd.

Integration of RTUs with the SCADA/EMS:

At present, RTUs at 91 Nos. of 220kV & 132kV substations of PSTCL have been provided with RTUs for remote data acquisition and control from the hierarchy of Control centres i.e. Area Load Control Centres at Jamsher (Jalandhar) & Lalton Kalan (Ludhiana) and State Load Control Centre at Ablowal (Patiala) in Punjab. Besides RTUs, data is being acquired from 7 Nos. SAS (Substation Automation Systems) at 400kV Substations & IPPs. Recently, tender for the Design, Supply, Commissioning and Integration of RTUs at 45 Nos. S/stns (i.e. New RTUs at 35 Nos. S/stns, Retrofitting RTUs at 3 Nos. S/stns and Cannabalizing RTUs at 2 Nos. RTUs) has been awarded vide Tender Enquiry No. SLDC/122/2014. And they are expected to get commission during FY 2017-18.

Implementation of Intrastate boundary metering cum Transmission Level Energy Audit Scheme in PSTCL

Under this project, 750 No. Availability Based Tariff (ABT) meters and 450 No. Conventional Energy Meters (CEM) have been procured. ABT meters have been installed at interface/boundary points of PSTCL with PGCIL, BBMB, HP, PSPCL & IPPs to calculate the amount of energy transmitted through boundary points and for calculation of overall transmission losses of PSTCL. Energy Losses are being calculated from Jul-2017 onwards by energy accounting cell. Also, CEMs have been installed at 400KV, 220KV and 132KV substations of PSTCL for energy audit purposes. Further, Centralized Energy Centre (CEC) of PSTCL has been established at Ablowal, Patiala. The Site Acceptance Test (SAT) of this project has been started and this project is likely to get commissioned within few months.  

Design, development & hosting of SLDC Web-Site: SLDC Projects office is maintaining the SLDC website in-house