Power industry covers generation (coal, hydro, nuclear, renewables), HVDC and UHV transmission, GIS/AIS substations, distribution and end use. ABB, Siemens Energy, Hitachi Energy, Schneider Electric and GE Grid Solutions lead HV equipment. Protection relays and SCADA are grid core. IEC 61850 is the substation communication standard.
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Power industry covers generation, transmission, distribution, substation and end consumption. Needs HV switchgear, tr...
Power industry covers generation, transmission, distribution, substation and end consumption. Needs HV switchgear, transformers, protection relays and SCADA. ABB, Siemens Energy, Hitachi Energy and Schneider Electric lead.
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FAQ
Q GIS vs AIS?
A
GIS (gas-insulated) uses SF6, compact (1/10 AIS), dust and moisture resistant — preferred for city substations. AIS (air-insulated) is cheaper but takes more space — outdoor substations.
Q IEC 61850 essentials?
A
Ethernet-based substation communication with GOOSE (ms protection signals), SV (sample values) and MMS (monitoring). Modern relays and SCADA must support it.
Q Protection relay selection?
A
Differential, distance, overcurrent and pilot protection by line or transformer. ABB REL/RET, Siemens SIPROTEC and SEL lead substations.