Sheet 03 · 138 – 400 kV
Protectionand control
Line, busbar and transformer protection schemes, substation control and teleprotection.
When a fault lasts a few milliseconds too long, the damage multiplies. Protection schemes are designed, set and tested by injection before a single piece of equipment goes into service.
What the workincludes
- Short-circuit and protection coordination studies.
- Differential (87), distance (21) and overcurrent (50/51) protection.
- Standardization of schemes on existing lines.
- Substation control and teleprotection links.
- Secondary injection and end-to-end testing.
The questionwe hear most
“Are your settings coordinated with the rest of the grid?”
The study starts from the grid operator’s data and is submitted for review before a single setting is loaded into the relays.
Request our filebefore the tender closes.
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