What this covers
- Condition and obsolescence assessment — what is still supportable, what is at end of life, and what is already unsupported.
- Gap analysis — where the existing scheme falls short of current standards or of how the network is now operated.
- Platform evaluation — comparing candidate numerical relay platforms on technical merit, independently of manufacturer.
- Migration strategy — staged replacement sequencing that keeps protection in service throughout.
- Retained infrastructure — whether existing CTs, VTs, DC systems and cabling can be reused or must be replaced.
- Hybrid operation — running legacy hardwired and IEC 61850 schemes alongside each other during transition.
What you receive
- Existing system assessment report
- Upgrade options with a technical comparison and recommendation
- Phased migration plan with outage requirements identified
- Updated protection philosophy and setting calculations for the new platform
- Commissioning and changeover procedures
Standards and references
Upgrades are specified against IEC 60255, IEC 61850 and the IEEE C37 series, with the existing installation assessed against IEC 61936-1 where relevant.
Related services
Relay Logic Design
Custom protection and control logic for numerical relays, across hardwired and IEC 61850 schemes.
Relay Setting Calculations
Setting and coordination calculations that keep fault clearance selective, fast and reliable.
Protection Philosophy Development
The document that sets protection principles, coordination strategy and design criteria for the whole project.
Need protection system upgrades scoped?
Work directly with the engineers doing the analysis — clear scoping from the first conversation.
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