Substation and Electrical Equipment Design in Compliance with IEC, IEEE, ANSI Standards

We offer professional engineering services for the development of design documentation for substation electrical equipment rated 0.4–220 kV, focusing on primary single-line diagrams, layout solutions, and technical specifications.

Overview

Projects are carried out in strict compliance with IEC, IEEE, and ANSI international standards and are adapted to the technical requirements, climatic conditions, and regulatory framework of the target country. The goal is to ensure operational reliability and safety, meet modern energy efficiency requirements, and reduce total cost of ownership.

Services Offered

Design of electrical equipment for substations (0.4–220 kV)

Primary single-line diagram configuration selection - defining topologies (single bus, double bus, with automatic transfer/reserve, ring or radial solutions) depending on the required reliability level and consumer category.
Equipment layout - placement of transformers, switchgear, circuit breakers, disconnectors, and busducts, ensuring operational convenience, fault selectivity, safety requirements, and optimization of conductor routes.
Grounding and lightning protection - calculation and design of solutions to ensure electrical safety, reduce overvoltages, and comply with permissible potential limits.
Digital integration - incorporating intelligent switching devices, digital instrument transformers, monitoring systems, and remote diagnostics.

Modernization and Retrofit Design

Replacement of obsolete equipment - preparation of documentation for upgrading to modern, more reliable, and energy-efficient solutions with minimal intervention in existing infrastructure.
Adaptation to current standards - revising layouts and designs to meet IEC/IEEE/ANSI and local regulations.
Layout optimization - increasing switchgear load capacity, reducing footprint, and improving safety and maintenance conditions for operating personnel.
Reduction of operational costs - implementing solutions to minimize losses, reduce scheduled maintenance frequency, and extend equipment lifespan.
Integration of new systems into existing schemes - matching parameters and interfaces while preserving selectivity and operational stability.

Equipment in Design

Switchgear (MV/LV) - KYN-28, KSO-366, and other types for indoor and outdoor installations.
Power transformers - oil-filled and dry-type, with various cooling systems.
Circuit breakers - vacuum and SF₆, designed for specified breaking capacity and operating conditions.
Disconnectors, earthing switches, isolators - ensuring safe maintenance conditions.
Busducts and conductors - cross-section selection, thermal withstand capability, and arrangement.
Auxiliary primary equipment - instrument transformers, bushings, surge arresters.

Equipment nomenclature and specifications are defined according to project requirements and selected manufacturers.

Work Stages

Initial data analysis - technical specifications, operating parameters, utility/operator requirements, climatic and site constraints.
Design documentation development - primary single-line diagrams, layout drawings, electrical parameter calculations, and equipment specifications.
Documentation delivery - full set of materials in the agreed format (DWG/PDF, etc.), with adaptation for local compliance review and approvals if required.

Advantages

Compliance of design solutions with IEC, IEEE, ANSI international standards.
Flexible adaptation to regulatory frameworks and climatic conditions of different countries.
High level of detail in primary diagrams and layouts, ready for implementation without modifications.
Optimization of reliability, safety, and operational efficiency.
Capability to integrate modern digital technologies and intelligent devices.

FAQ - Frequently Asked Questions

Which standards are used in design?

Documentation is prepared in accordance with IEC, IEEE, ANSI. National regulations of the target country can also be taken into account.

How is remote cooperation organized?

Communication is via email, video conferencing, and secure file sharing. Materials are delivered in agreed digital formats (DWG, PDF, etc.).

Can the project be tailored to a specific manufacturer?

Yes, specifications and solutions can be adapted to specific product lines and technical parameters.

What voltage classes are covered?

Design covers equipment rated 0.4–220 kV, including various configurations of switchgear and transformer bays.

Do you carry out modernization projects?

Yes, documentation is developed for retrofits - equipment replacement, layout optimization, and compliance upgrades.

What does the delivered documentation include?

The basic package includes primary single-line diagrams, 3D models, assembly and part drawings, and specifications. Format and content are agreed in advance.