Relay Protection

Parametrization and Configuration of the System in all Types of Power Facilities. Testing and Commissioning with the Latest Equipment.

Services

Design

Elaboration of Preliminary Concept Design, of the Main and Detailed Design related to Relay Protection of Power System.

Services

Services

LUKA-TEST d.o.o. covers three main business segments: design, feasibility study and relay protection. We have gained a lot of experience on international and domestic projects implemented by our highly educated employees.

Design

  • Basic Design
  • Main Design
  • Detailed Design
  • Specification of Equipment
  • Expert Supervision

We perform design with AutoCAD and Eplan Electric P8 software tools.

Feasibility Study

  • Feasibility Study of Power System Optimal Connection
  • Feasibility Study of Power Plant Impact on the Network
  • Relay Protection Setting Calculation

We perform analysis of the Power System with DIgSILENT PowerFactory software tool.

Relay Protection

  • Parametrization and Configuration of the System in all Types of Power Facilities
  • Secondary Testing of Facilities with the Latest Equipment from "Omicron"
  • Functional Testing and Commissioning
  • Employee Training for Handling and Maintaining Relay Protection System

For offshore work purposes on power facilities, international STCW VI/1 certificate is available.

About Us

LUKA-TEST d.o.o. is the company established in 2012 and specialized in the area of power facility engineering. Our clients are large companies operating in the same area, electricity companies and related industry.

Based on our long experience on international and domestic projects, as a guarantee of quality, we can offer further services like design, expert supervision, testing and commissioning power facilities of low, medium and high voltage.

LUKA-TEST d.o.o. is the winner of certificate for solvency excellence presenting one of the most important European standards defining performance quality as internationally recognized feature of company's economic value.

References

We participated as the main contractor or sub-contractor in different project phases, including different power objects in country and abroad. Some of the most significant ones are the following:

    Substations

  • Fano Synchronous Compensator, Italy
  • Požega Zapad, 110/10(20) - 35/10(20) kV, Croatia
  • Zamošće, 110/10(20) - 35/10(20) kV, Croatia
  • Senj, 33/220 kV, Croatia
  • Ferovac, 35/10 kV, Croatia
  • Mali Zdenci, 35/10 kV, Croatia
  • Pakrac, 35/10 kV, Croatia
  • Međurić, 220/110/35 kV, Croatia
  • Port Sudan, 220/110 kV, Sudan
  • Samobor, 110/20 kV, Croatia
  • South Hedland, 220/11 kV, Australia
  • Kotmale, 220 kV, Sri Lanka
  • Hope Downs 4, 220/33 kV, Australia
 

    Hydro Power Plants

  • Miljacka, 3 x 8 MVA, 1 x 5.5 MVA, Croatia
  • Kota 2, 3 x 4.7 MVA, Malaysia
  • Bistrica, 2 x 3.2 MVA, Montenegro
  • Grimsa, 3.15 MVA, Iceland
  • Alejandria, 2 x 8.5 MVA, Columbia
  • Krueng Isep, 2 x 7.5 MVA, Indonesia
  • Upper Kotmale, 2 x 80 MVA, Sri Lanka
  • Varaždin, 2 x 65 MVA, Croatia
  • Kariba North, 4 x 200 MVA, Zambia
  • Camlica, 3 x 6.5 MVA, Turkey
 

    Thermal Power Plants

  • Spin Valis Internacional, 1.5 MVA, Croatia
  • CoProB sugar factory, 17.3 MVA, Italy
  • Gevag – incineration, 6.3 MVA, Switzerland
  • ArcelorMittal Zenica, 15 MVA, 40 MVA, Bosnia and Herzegovina
  • Ugljevik, 350 MVA, Bosnia and Herzegovina
 

    Industry

  • Spin Valis d.d. furniture factory, Croatia
  • NB500 Cutter Suction Dredger, Poland
  • Azerikimya Modernisation, Azerbaijan
  • Mellitah Complex, Libya
  • Mykonos Drillship, Spain
  • Platforms in Adriatic Sea, Croatia
  • Oil Refinery Brod, Bosnia and Herzegovina
  • Ras Laffan Port Expansion Project, Qatar
 
Relay Protection
2021. Milan, Italy

Fano synchronous compensator

For the client, the company INTIS s.r.l., we made a software configuration and factory acceptance testing of the devices used for control, synchronization, fault record and relay protection for synchronous compensator +250 / -170 Mvar. The interlocks are made with GOOSE messages with IEC 61850 communication protocol.
Basic Design
2021. Požega, Croatia

Construction of SS 110/10(20) - 35/10(20) kV Požega Zapad

For the client, the company HEP-OPERATOR DISTRIBUCIJSKOG SUSTAVA d.o.o., Elektra Požega, we delivered basic technical construction solution for SS 110/10(20) - 35/10(20) kV Požega Zapad.
Detail Design, Feasibility Studies, Relay Protection
2021. Zenica, Bosnia and Herzegovina

Toplana Zenica - Turbo Blower Modernisation

For the client, the company ABB Automation GmbH, we made a detail design of relay protection, setting calculation, testing and commissioning for two special transformers, installed power 2x7.87 MVA, with three secondary windings vector shifted by +25/+15/+5 (-25/-15/-5) degrees.
Detail Design
2020. Miljacka, Croatia

Replacement of the busbars and insulators on the main terminals of the unit transformers 6.3/35 kV in HPP Miljacka

For the client, the company HEP-PROIZVODNJA d.o.o., Hydropower sector, we delivered detail design for replacement of the busbars and insulators on the main terminals of the unit transformers 6.3/35 kV in HPP Miljacka.
Main Design
2020. Mali Zdenci, Croatia

Replacement of 10 kV primary equipment for transition to 20 kV voltage level in SS 35/10 kV Mali Zdenci

For the client, the company HEP-OPERATOR DISTRIBUCIJSKOG SUSTAVA d.o.o., Elektra Križ, we delivered main design for replacement of 10 kV primary equipment for transition to 20 kV voltage level, replacement of relay protection and auxiliary AC and DC distribution panels.
Design, Feasibility Studies, Relay Protection
2019. Lawas, Malaysia

Hydro Power Plant Kota 2

For the client, the company Sintaksa d.o.o. we delivered detail design of relay protection for 33 kV switchgear, detail design of relay protection and generator synchronization (3 x 4.7 MVA), relay protection setting calculation for complete power plant, dimensioning of current and voltage instrument transformers, dimensioning of neutral earthing resistor for step-up transformer, testing and commissioning of the power plant.
Education
2018. Erbil, Iraq

Training for the Regional Government of Kurdistan, Ministry of Energy

For the client, the company MGR Energetika d.o.o. we trained and educated technical stuff of the Ministry within 15 working days on the subject of calculations of generator and distribution protection, including parametrization for generator relay protection, testing and commissioning. The training comprised both, theory and practice.
Feasibility Study, Relay Protection
2018. Međurić, Croatia

Replacement of the Primary and Secondary Equipment in 35 kV facility SS 220/110/35 kV Međurić and implementation in remote control system Elektra Križ

For the client, the company Dalekovod d.o.o. we made relay setting calculation of the 35 kV switchgear, testing of temporary 35 kV GIS switchgear, configuration and testing of new 7SJ85 protection relays, including implementation into remote control system for Elektra Križ using IEC 61850 communication protocol, commissioning of new 35 kV switchgear type BVK 38.

EU Projects

Project Title: Improvement of Management Systems through the Implementation of ISO Standards
Call Reference Code: PK.1.3.04
Call Title: Support for Enterprises in Product Certification and the Implementation of Management Systems

Project Objectives and Expected Results

This project, involving the implementation of ISO standards into management systems, represents a necessary step towards establishing conditions for sustainable future business operations, increasing competitiveness, facilitating access to international markets, and adapting to current and future industry requirements. The project results will be reflected in the certification of management systems in accordance with ISO 9001, ISO 14001, and ISO 45001 standards, as well as in improved business processes (8). This will create a foundation for enhanced competitiveness, stronger market presence, and improved positioning in target markets, including international markets.

Total Project Value and EU Co-financing

Total Project Value: €28,147.00
EU Co-financing Amount: €17,735.25
Project Implementation Period: 29 May 2025 – 29 November 2026
Contact person: Luka Užar | info@luka-test.hr