Tiza Group

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Substation engineering design and studies

Engineering designed to work from day one. Our team designs the primary, secondary and communications systems of substations and industrial facilities, and calculates and coordinates their protection. We do it remotely: you send us the project information and receive drawings, calculation reports and settings, backed by the same field experience we use to test and commission.

Design and studies are done remotely: no site visit is needed to get started.

Protection logic configured in the manufacturer's software.
Protection logic configured in the manufacturer's software.

What is included

Primary engineering

The switchyard and the power equipment: how the substation is connected, which equipment it needs and how people and assets are protected.

  • Single-line diagrams and bus arrangements
  • Layouts and switchyard sections
  • Selection and specification of breakers, disconnect switches, CTs, VTs and transformers
  • Grounding grid (IEEE 80) and lightning shielding
  • Calculation reports adapted to the local code you indicate

Secondary engineering (P&C)

Protection, control and metering: the schemes, panels and wiring that clear every fault and take every command to its device.

  • Protection, control and metering schemes
  • Three-line, wiring and terminal block diagrams
  • Protection and control panel design
  • AC and DC station service
  • Signal lists and interlocking logic

Communications engineering

The substation network and its link to the control center, designed for the availability and security that operation requires.

  • IEC 61850 network architecture (star, ring, PRP and HSR)
  • Specification of switches, gateways and clocks
  • Point lists for SCADA and the control center
  • Teleprotection channels
  • Time synchronization and cybersecurity

Technical, interconnection and commissioning studies

The studies your utility, transmission owner or system operator asks for to connect and energize a load or a plant, and the calculations behind the design.

  • Interconnection feasibility and capacity checks
  • Grid interconnection studies
  • Pre-commissioning studies (protection, energization)
  • Protection coordination and settings tables
  • Short circuit, load flow and power quality analysis

Technical and interconnection studies

Engineering design

What you receive

Drawings and calculationsSingle-line and three-line diagrams, wiring, layouts and calculation reports, complete and ready for your review.
Specifications and listsEquipment specifications, signal lists and network architecture for procurement and integration.
Support through approvalWe answer the comments of your utility, your owner's engineer or your reviewer.

Reference standards: IEC 61850, IEC 60909, IEEE 551, IEEE 80, IEC 60255-151 / IEEE C37.112, IEEE 519, IEC 61000-4-30, IEEE 1159.

Frequently asked questions

Can you do the design without traveling to site?

Yes. Design and studies are done from our office with the project information: existing drawings, nameplate data, photos and the utility requirements. Field work, such as surveys or measurements, is done in Colombia, or elsewhere on request or by your local team following our instructions.

Which codes and standards do you design to?

IEC and IEEE standards, adapted to the local code and the utility requirements that you give us at the start of the project. We list the applicable standards in each calculation report.

What information do you need to start?

It depends on the scope. For a design: the project scope, site information and the utility requirements. For a coordination study: the single-line diagram, nameplate data of transformers, cables and protective devices, the short-circuit level at the point of connection and, if they exist, the current settings.

Can you also load and test what you design?

Yes. With our remote configuration service we load the settings and configurations into the devices and verify them, so the design, the study and the configuration stay under one responsibility. Field testing and commissioning are available in Colombia, or elsewhere on request.

Need it for your project?

Send us the single-line diagram, the equipment list and your target date, and we will reply with scope and schedule.

Design and studies are done remotely: no site visit is needed to get started.

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[email protected]

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