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Full Scope
WHAT'S INCLUDED IN OUR P&C design SCOPE
Protection Philosophy
Development of protection philosophy document defining relay schemes, main and back-up protection, intertripping and signalling.
Control Panel Design
Panel GA drawings, schematic wiring diagrams, terminal schedules, nameplate schedules and cable interconnection drawings.
Interlocking & Logic Design
Hardware interlocking matrix, substation automation controller logic and Bay controller configuration for safe operation.
Protection Relay Settings
Setting calculation for overcurrent, earth fault, differential, distance and busbar protection relays per protection study.
IEC 61850 P&C Design
GOOSE intertripping scheme design, SCD configuration, logical node mapping and IED interoperability specification.
Factory Acceptance Testing
FAT procedure preparation, relay test schedules, panel wiring verification and secondary injection test witnessing.
Our Process
FROM philosophy TO Energisation
01
PROTECTION PHILOSOPHY
Develop protection philosophy document incorporating utility requirements, grid code obligations and IEEE/IEC standards. Define main and back-up relay schemes for all bays.
02
PROTECTION SETTINGS
Carry out grading studies and prepare relay setting files for all protection functions. Settings submitted to utility for approval prior to panel manufacture.
03
PANEL DESIGN & MANUFACTURE
Produce panel GA drawings, wiring schematics and cable schedules. Review and approve manufacturer panel drawings before production to ensure design compliance.
04
FACTORY ACCEPTANCE TEST
Witness FAT including secondary injection, functional testing, interlocking checks and IEC 61850 GOOSE testing. Issue FAT report for client and utility acceptance.
05
SITE COMMISSIONING
Carry out primary injection tests, protection proving tests and intertripping checks. 72-hour energisation monitoring and punch-list clearance before handover.
Capabilities
Technical Specifications
Protection Functions | Differential, distance, overcurrent, busbar, auto-reclose |
Relay Vendors | ABB, Siemens, GE, SEL, Schneider, Alstom, Beckwith |
IEC 61850 | GOOSE, MMS, SCD/CID configuration, IED interoperability |
Panel Standards | IEC 61439, BS EN 60439, ANSI/IEEE C37.90 |
Standards Followed | IEC 60255, IEEE C37.113, IS 3231, NERC PRC standards |
Software Used | ETAP, CAPE, AutoCAD Electrical, relay vendor setting tools |
Deliverables | Philosophy docs, setting files, panel drawings, FAT/SAT reports |
Proof of Work
P&C Design Projects We've Delivered
Electrical Engineering Consultant in UK