Thailand’s economy has been achieving rapid economic growth, at an average of 10% a year, since 1988. To avoid disparity between the Bangkok metropolitan area, and other regions in the country, the Thai government economic plans promoted decentralization of industry from the Bangkok to the provinces.
This made power demand to increase in regions where the PEA (Provincial Electricity Authority) supplies electric power. The iGrid‑T&D RTU (iRTU) and SCADA system (iControl) have been certified by the PEA as a solution for telecontrolling PEA power transmission and distribution networks.
Many electronic, devices from different manufactures, are taking place inside every single substation. The iGrid‑T&D iRTU and iControl systems, are capable of use different communication protocols simultaneously, in order to integrate all the incoming information. DNP3.0 with a redundant communication channel, is used to communicate the iControl SCADA with the PEA control center.
The iControl SCADA operates as the substation SCADA at the same time that all the information is being sent to the PEA control center. The iControl SCADA is used in a client/server architecture with redundant server.
A set of iGrid iRTU and expansion modules are used to monitorize every line in the substation. The iRTU obtains digital and analog information thanks to its input/output expansion modules. Fault pass detection and Sag/Swell detection features are performed as well. All gathered information can be preprocessed (if needed), reported to the iControl and finally sent to the PEA control center. All protocols used by the iRTU and iControl are standard protocols, assuring perfect integration with devices from other manufacturers.
iGrid‑T&D has successfully commissioned substations from the north of Thailand (Huay Bong wind farm) to the south (Ranong province)