KPTCL, the state utility of Karnataka in southern India, operates the Mandur substation located near Hoskote.
The Mandur substation near Hoskote is a 66/11kV facility, where the RTU panel houses the RTU along with communication, protection, and power supply equipment.
The RTU panel connects physical equipment such as breakers, relays, and meters in a substation or plant to the central control system.
The system has two redundant gateways, ensuring that if one fails the other functions as a standby, while a third gateway is connected to the HMI and equipped with 24 digital input cards, providing a total of 12 Ethernet ports (with each gateway having 4 ports).
The panel is equipped with 3 D1A1 devices (each having 24 digital input cards and 8 analog input cards), 1 D1D1 device (with 48 digital output cards), and 5 R1R1 devices (each with 16 digital output cards), all of which are iRTUe devices.
The project involves 80 relays communicating via digital output cards through iRTUe devices, 30 multifunction transducer meters communicating using Modbus, and energy meter data being read through the DLMS protocol using the iGW/DCU.
The project included 144 digital input tags, 80 digital output tags, and 24 analog input tags to be read by the gateway, which transmits the data to the remote center using the IEC60870-5-104 protocol.
The panel is equipped with two transducers for measuring the substation’s DC source.
