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HV/LV Network Analysis

Precision Power Engineering.
From Source to Load. 

ppa delivers comprehensive HV and LV electrical network analysis, ensuring safe, reliable, and efficient power distribution across all project scales. Using industry-leading ETAP, Electrical OM and Caneco BT software, our engineers produce rigorous studies that underpin compliant and cost-effective electrical system design.  

HV/LV Network Analysis Overview

We carry out load flow, short-circuit, arc flash, and discrimination studies for high and low voltage distribution networks. These studies ensure that protection devices are correctly specified, coordination between protective devices is achieved, and the system operates safely under both normal and fault conditions. 

Our network analysis service covers projects from small LV systems through to large-scale HV infrastructure for hyperscale data centres and industrial facilities. All studies are produced in compliance with IEC, BS 7671, and applicable local standards, with clear documentation for client, contractor, and regulatory review. 

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Scope of Service

  • Load flow and power distribution network analysis 

  • Short-circuit and fault level calculations 

  • Arc flash hazard analysis and incident energy assessment 

  • Protection coordination and discrimination studies 

  • Cable sizing, voltage drop, and thermal rating calculations 

HV Network Studies

  • High voltage network load flow analysis 

  • HV short-circuit and earth fault calculations 

  • HV protection relay coordination and setting recommendations 

  • Transformer sizing, impedance

  • Grid connection studies and utility interface requirements 

LV Network Studies

  • LV distribution board design and load scheduling 

  • Short-circuit and prospective fault current calculations to BS 7671 

  • Cable sizing and voltage drop calculations (Electrical OM, Caneco BT) 

  • Full discrimination and selectivity analysis across the LV network 

  • Backup and standby power system integration studies 

Protection & Safety Studies

  • Arc flash hazard analysis and PPE boundary calculation (IEEE 1584) 

  • Protection relay grading and coordination studies 

  • Earth fault loop impedance verification 

  • RCD coordination and selectivity analysis 

  • Safety documentation and hazard area classification support 

Design Process

Concept & Feasibility

Network topology definition, utility data collection, and load schedule development. Identification of critical protection and coordination requirements. 

Schematic Design

Initial load flow and fault level studies to validate system design assumptions. Protection device selection and preliminary settings. 

Detailed Design

Full ETAP/ Electrical OM/Caneco modelling with confirmed equipment data. Completed protection coordination, arc flash, and cable sizing reports. 

IFC Documentation

Formal study reports issued for construction, including protection relay settings schedules, cable schedules, and regulatory compliance documentation. 

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