Engineering Services and Energy Consultancy

From concept to IFC drawings, NAESC manages the full design cycle for gas-insulated and air-insulated switchgear substations up to 380kV. Our deliverables are bankable, contractor-ready, and fully coordinated across the electrical, civil, mechanical, and BIM disciplines.

• —Single-line diagrams (SLD)
• —Equipment specifications and data sheets
• —Earthing and lightning protection design
• —Cable routing and schedules
• —Mechanical designs
• —Civil / structural designs
• —Interface drawings
• —BIM coordination model
• —IFC and As-Built drawing packages

NAESC specialises in Protection & Control design across every type of project. We produce protection philosophies, relay settings calculations, panel arrangement drawings, and compliance documentation — covering every voltage level from 13.8kV to 380kV.

• —Protection philosophy documents
• —Relay settings calculations and reports
• —Protection coordination studies
• —P&C panel arrangement and wiring drawings
• —Tripping matrix and interlocking logic
• —Compliance schedules
• —Factory and site acceptance test (FAT/SAT) specs

We design substation automation systems (SAS) to IEC 61850 — including logical node mapping, GOOSE messaging schemes, process bus architecture, and RTU/gateway integration. All SCADA deliverables are coordinated with the P&C design to ensure seamless protection and control integration.

• —IEC 61850 system architecture design
• —Logical node (LN) and GOOSE configuration
• —SAS functional requirements specification
• —Network topology and switch diagrams
• —RTU / gateway integration specification
• —Engineering configuration files (SCL/ICD/CID)
• —SCADA FAT/SAT test procedures

NAESC provides detailed overhead line engineering for both new construction and circuit upgrades. Our OHL packages cover every deliverable from route selection through construction-ready drawings, using PLS-CADD for sag-tension and loading calculations.

• —Route survey and profile drawings
• —Tower/pole type selection and spotting
• —Sag-tension calculations (PLS-CADD)
• —Wind and ice loading analysis
• —Right-of-way and clearance verification
• —Foundation load reports
• —Earthwire and lightning protection
• —Bill of materials (BOM)

Our underground cable designs cover the full scope from conductor selection through trench layout and civil interface. We produce thermal rating studies, protection coordination reports, and complete installation packages for systems up to 380kV.

• —Cable sizing and conductor selection
• —IEC 60287 thermal rating calculations
• —Route planning and plan/section drawings
• —Joint bay and termination layouts
• —Bonding and earthing design
• —Cable protection and fault level studies
• —Civil trench and duct coordination
• —Testing and commissioning specifications

We perform the power system studies required at design stage and for grid connection applications — covering load flow, fault level assessment, harmonic analysis, arc flash, relay settings, and reactive power evaluation. Studies are produced using industry-standard software (PSS/E, PSCAD, DIgSILENT PowerFactory).

• —Load flow and voltage profile studies
• —Short-circuit / fault level analysis (IEC 60909)
• —Harmonic assessment reports
• —Arc flash studies
• —Power quality and flicker studies
• —Reactive power and voltage regulation studies
• —Protection relay reach calculations
• —Grid connection studies (G99)

NAESC produces Building Information Modelling (BIM) deliverables for substation projects in accordance with client BIM requirements. Our engineers work in Revit and coordinate with structural and civil models in Navisworks to deliver clash-free, fully attributed 3D models and associated data drops.

• —Revit electrical and structural models
• —Navisworks clash detection reports
• —BIM execution plan (BEP)
• —Common Data Environment (CDE) uploads
• —Asset data and attribute population
• —BIM Level 2 deliverable schedule
• —Native and IFC model exports

We carry out and review the electrical studies required to specify and integrate Static Synchronous Compensators (STATCOM) and other reactive power compensation plant — including steady-state and dynamic modelling, protection design, and grid code compliance assessment.

• —Reactive power requirement studies
• —STATCOM sizing and specification
• —Dynamic stability modelling
• —Protection philosophy and settings
• —Grid code compliance report
• —Harmonic filter design
• —Integration and commissioning support

NAESC provides the full engineering for utility-scale Battery Energy Storage Systems — from initial sizing studies through protection design and grid interface — for mining, industrial, and utility clients.

• —BESS sizing and energy assessment studies
• —Battery system protection design
• —AC/DC interface and inverter specifications
• —Grid connection and fault level studies
• —DC system design and cable schedules
• —Civil designs
• —Mechanical designs
• —Protection relay settings and coordination
• —Commissioning and testing specifications

We provide the full design scope for utility-scale solar PV projects — from DC string design and inverter selection through MV collection network, protection coordination, and grid connection studies. Applicable to standalone PV and hybrid PV+BESS configurations.

• —PV yield and energy assessment review
• —DC string design and cable sizing
• —Inverter and transformer specifications
• —MV collection network design
• —Civil designs
• —Mechanical designs
• —Protection and earthing design
• —Grid connection studies (G99 / P28 / G5)
• —Power quality and harmonic assessment