2022-08-04T06:14:57
Control and Protection of Extra High Voltage Electrical Networks
Extra high voltage network comprises of Substations and Transmission lines at various voltage levels. Voltage levels are divided into two broad categories - Transmission and Distribution. Generally voltages 66kV and above falls under Transmission and those of 33kV and below falls under Distribution category.
Control and protection of high voltage electrical networks are of absolute necessity for ease of operation and isolation of faulty portion of the circuit. Control of electrical equipment can be done from three locations - 1) from the equipment itself, 2) from Control & Protection panel, 3) from remote Load dispatch center (LDC). For remote control, the substation needs to have a RTU or Gateway computer through which the data exchange can take place with the LDC through fiber optic or PLCC mode.
Electrical protection can be of different types. For protection of extra high voltage transmission line feeders, normally distance protection scheme is employed, for Power transformers, transformer differential protection in conjunction with REF protection is employed and for bus bars, Bus bar differential protection in conjunction with CT circuit supervision relay is widely used.
Satcon has almost two decades of rich experience in delivering Control & Protection schematic drawings of any Substations upto 400kV voltage range. Our senior engineers are regularly carrying out the similar exercises on daily basis and thus have gained high expertise to deliver such Hi-tech engineering at a quicker delivery time and also at competitive price..
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