POWER GENERATION AND TRANSMISSION 

 

Strefa unique in-house design engineering services combine flexibility with innovation and complete solutions, giving clients customisable options for their project. From concept design, through detailed design and development to simulation, validation and optimisation tasks, STREFA delivers solutions tailored to client requirements across every phase of the design process.

 

A single, integrated engineering capability adds considerable value for our clients by avoiding the complications of multiple parties and touch points. A full project team working directly with clients is the shortest route to a more effective outcome. Along the construct, commission and operate paths of project delivery STREFA’s design engineers drive development of robust, practical and safer designs.

 

Our capability includes civil/structural, mechanical and electrical/instrumentation design. STREFA performs all mechanical and electrical trades and the majority of commissioning and process proving activities. We develop control methodologies and undertake complex system integration works.

 

All our work is delivered in accordance with the International Standard ISO 9001 (Quality Management Systems).

 

OUR CAPABILITIES

 

To enable the delivery of our design services, we have advanced capabilities in:

 

Civil and structural engineering

 

Commissioning philosophies and procedures

 

Completions management

 

Constructability reviews and site surveys

 

Design engineering

 

Electrical engineering

 

Instrumentation and controls

 

Manufacturing engineering

 

Mechanical engineering

 

Product development

Project controls and governance

 

Systems engineering

 

KEY BENEFITS & DIFFERENTIATORS

 

Reduced complexity flowing from our unique integrated in-house engineering offering

 

Engineers are involved in all facets of the project life cycle, from concept development through to operation, maintenance and shutdown planning

 

Reduced risk focusing on issues of constructability, modularity and maintainability

 

  1. collaborative and client-focused approach providing greater transparency A single source of innovative and integrated engineering capability

 

 

LOW TO MEDIUM VOLTAGE ELECTRICAL TRANSMISSION SYSTEMS

 

With our consistent portfolio of medium and low voltage power distribution projects, STREFA enables the realisation of highly efficient grid networks, providing the foundation for green cities and energy efficient infrastructures, buildings and industrial applications.

 

STREFA has the capability to build and support the infrastructure required to distribute electricity reliably and safely for all types of buildings from residential to large industrial facilities.

 

From medium voltage substations and underground cabling to switch rooms, protection and metering systems, capacitors and communication links, STREFA can design and construct a tailored solution working closely with clients in order to meet their POWER GENERATION and electrical distribution needs. Our project delivery track record has helped STREFA build a solid reputation for quality, efficiency and performance within the power distribution industry.

 

MEDIUM VOLTAGE SUBSTATIONS

 

STREFA is a leading provider of solutions for medium voltage substations from complete planning to design, turnkey construction and long term maintenance.

 

Accounting for a wide variety of factors, STREFA’s substation design takes into consideration the coordinates of incoming and outgoing overhead lines, the number and location of transformers and specified voltage levels, also fundamental to switchyard layout.

 

Our solutions have been designed with economic efficiency in mind which pays off during the entire lifecycle of the substation and ensures a number of cost benefits to the client. Every substation has been thoroughly optimised for easy operation, accessibility, safety, and dependability.

 

LOW TO MEDIUM VOLTAGE (LMV) POWER TRANSFORMERS

 

As a part of our substation offering, STREFA provides expertise and targeted solutions beginning with the initial installation and on through the entire transformer service life. STREFA installs rectifier transformers that are designed according to exact client specifications, taking into consideration voltage, power, system topography, and noise emission levels.

 

Transformers are also relatively expensive long-term capital assets. With this in mind, STREFA’s knowledge and services throughout the entire transformer lifecycle can make all the difference.

LOW TO MEDIUM (LMV) VOLTAGE CABLES

 

Working collaboratively with clients, STREFA can offer the full range of services for low to medium voltage cable systems up to 100 kV from a single source, starting with cable engineering design and construction up to the final test and ongoing maintenance after installation. Our expertise in delivering cabling solutions effectively links offshore and onshore power generation to substations and to grid networks.

Specialist construction techniques for the delivery of cabling systems developed by STREFA have overcome major challenges and led to significant improvements in minimizing risk and maximizing efficiency.

 

SUBSTATION CONTROL SYSTEMS

 

The company continues to deliver proven solutions for the optimization of electrical substation operations. STREFA’s control systems division delivers an extensive range of products and services designed to enable energy providers to control, monitor and protect substations in the most effective manner possible with the lowest lifecycle cost.

 

STREFA delivers advanced solutions in gas, diesel, thermal, wind and hydro power generation. Ranging from small power requirements to large utility plants, STREFA works with leading power generation technology providers to design tailored solutions to meet the particular operating needs of our clients. From fast starts that swiftly meet grid load requirements, to high availability and reliability to keep operators online, STREFA solutions can meet every requirement.

 

The STREFA team is recognized for its expertise in the delivery of brownfield projects where interaction with existing facilities and working on high voltages and live plants requires a higher level of understanding and thorough planning. The company has the ability to undertake pre-feasibility requirements analysis, feasibility studies, FEED (Front End Engineering and Design) studies and full project implementation from concept design through to commission.

 

Depending on the requirement, STREFA has the flexibility to work within a range of contracting models. We have completed projects based on target cost, balance of plant and construction works with base engines free-issued by clients. We can also deliver full turnkey Engineer Procure Construction (EPC) projects in partnership with OEMs (Original Equipment Manufacturers) and other key suppliers.

 

Our engineering capability includes over 50 in-house professional staff whose experience covers With disciplines including civil, mechanical and electrical, instrumentation and control, STREFA is able to integrate a power plant from any OEM provider to suit Australian statutory requirements. Our experience for the energy and resources sectors includes power generation projects across Australia and New Zealand.

 

COMBINED CYCLE POWER STATIONS

 

In electric power generation, a combined cycle plant is an assembly of heat engines that work in tandem off the same source of heat, converting it into mechanical energy, which in turn usually drives electrical generators.

 

STREFA delivers combined cycle power plants that provide flexibility for the easy selection of options to meet specific market and customer needs. The company is able to design, supply, construct and commission combined cycle power plants with current projects ranging from 200 megawatts up to more than 500 megawatts.

 

OPEN CYCLE POWER STATIONS

 

The benefit of employing open cycle power plants is that they can be brought on-line when generation or transmission system problems threaten supply. The open cycle power station that STREFA delivers can be started and brought to full load within minutes, making the plant ideal to meet peak load demands.

 

STREFA has successfully completed more than six open-cycle power plants since 2008 ranging in size from 40 megawatts to 200 megawatts.

 

CO-GENERATION POWER PLANTS

 

Co-generation is the simultaneous production of electricity and thermal energy from a common fuel source. With broad industrial experience, fuel flexibility, high exhaust energy-to-power ratio, exhaust temperature, and reliability, our co-generation offerings are an excellent fit for industrial and refinery requirements, providing electricity and process steam.

 

TRI-GENERATION POWER PLANTS

 

The tri-generation process produces power, heat and cooling from a single fuel source. STREFA is able to design and supply turnkey solutions to meet cooling, heating and power needs. This form of power generation can be a cost-effective solution for both new and existing commercial developments. Typical examples include hospitals, data rooms, office building and large residential complexes.

 

WIND POWER

 

In addition to economical use and efficient transformation of fossil raw materials, the focus will shift increasingly to renewable energy sources for the generation of electrical energy. Building on a strong power generation heritage spanning more than 50 years, STREFA has the capability to deliver onshore wind turbines with our OEM partners that deliver optimal performance, availability and reliability, creating more value for our clients.

 

SOLAR PV

 

STREFA has expanded on its traditional core businesses, and is set to become a major player in the engineering, design, construction and operation of utility scale solar power plants in Australia. We see this a significant growth opportunity, and solar will become a substantial part of our business.

 

STREFA draws on its knowledge, capability and vast experience of delivering large infrastructure projects for power utilities, mines, defence, water, rail and transport sectors.

 

Our mission is to drive the cost of solar energy towards grid parity, and offer highly professional, competitive and industry leading EPC and O&M services to the solar industry.

 

HYDRO POWER

 

Hydropower is one of the most flexible forms of renewal power generation, being suitable for peak, base load production or pumped storage. STREFA is able to provide a range of solutions for hydro power generation that cover the entire scope of service including design, engineering, project management, operations and maintenance.

 

POWER GENERATION CONTROL SYSTEMS

 

STREFA’s control systems division delivers an extensive range of products and services for enhancing availability, flexibility and profitability in power generation. The company continues to deliver proven solutions for the optimisation of plant operations, maintenance and power plant management. System development has drawn on know-how gathered during the implementation of numerous power generation projects.

 

HIGH VOLTAGE OVERHEAD AND UNDERGROUND ELECTRICAL TRANSMISSION SYSTEMS

 

STREFA delivers leading design, supply, construction and maintenance solutions for overhead and underground electrical transmission and DISTRIBUTION SYSTEMS.

 

To meet the growing energy demands and challenges and to help utilities and large electro-intensive industries such as RAILWAY, oil & gas and minerals & metals, STREFA’s design and engineering teams work hand in hand with clients to develop tailored and cost effective solutions.

 

Well positioned to meet the energy challenges of today and tomorrow, STREFA boasts expertise which has always ensured higher safety, reliability and capacity of power grids throughout Australia and New Zealand. STREFA has assembled extensive specialised plant and equipment and in-house design expertise capable of undertaking turnkey projects up to 500kV. Our commitment to safety, customer satisfaction and a responsible approach to environmental management, enable STREFA to maximise client deliverables.

HIGH VOLTAGE SUBSTATIONS

 

STREFA is a leading provider of turnkey high voltage (HV) substations of up to 500kV, having delivered over 50 projects in the last 10 years; 27 of which were Engineering, Procurement, Construction (EPC) in character. Our business has the maturity, strength and resources to successfully deliver remote and complex projects.

 

Our project, engineering and construction processes constantly evolve to ensure we deliver projects of the highest quality. Our substations are delivered, tested and commissioned to meet the most demanding criteria of safety and security.

 

STREFA has a national substation design team, comprised of experienced primary, secondary, SCADA (Supervisory Control and Data Acquisition), structural and civil engineers, capable of the complete engineering of the most complex of projects, whether greenfield or brownfield.

 

OUR CAPABILITIES

 

Communications and control systems

 

High Voltage (HV) Air (AIS) or Gas (GIS) Insulated Substations

 

High Voltage (HV) plant maintenance

 

Power transformer installation refurbishment and testing

 

Staged construction of substations in and adjacent to live installations

 

HIGH-VOLTAGE (HV) AIR INSULATED SUBSTATIONS (AIS)

 

STREFA is a leading provider of solutions and services for Air-Insulated Substations (AIS), critical in high-capacity high-voltage power transmission systems. Our services include the complete planning, delivery and turnkey erection of air-insulated substationsof up to 500kV.

 

Working closely with clients, STREFA delivers tailor-made AIS solutions especially when it comes to step-up systems in connection with power stations and large transformer substations in extra-high voltage transmission systems.

 

Accounting for a wide variety of factors, STREFA’s substation switchyard design takes into consideration the coordinates of incoming and outgoing overhead lines, the number and location of transformers and specified voltage levels, also fundamental to switchyard layout.

 

HIGH-VOLTAGE (HV) GAS INSULATED SUBSTATIONS (GIS)

 

STREFA supplies Gas Insulated Substations (GIS) for rated voltages of up to 500 kV. Having access to multiple types of switchgear from leading technology partners, STREFA holds ideal solutions for most indoor and outdoor switching applications. All of STREFA’s GIS meet the highest requirements in terms of efficiency, safety, and reliability.

 

STREFA’s GIS have been designed with economic efficiency in mind which pays off during the entire lifecycle of the substation and ensures a number of cost benefits to the client. Every GIS solution has been thoroughly optimised for easy operation, accessibility, safety, and dependability.

 

POWER TRANSFORMERS

 

As a part of our advanced substation offering, STREFA provides expertise and targeted solutions beginning with the initial installation and on through the entire transformer service life. STREFA installs rectifier transformers of up to 500kV designed according to exact client specifications which take into consideration voltage, power, system topography, and noise emission levels.

 

Transformers are also relatively expensive long-term capital assets. With this in mind, STREFA’s knowledge and services throughout the entire transformer lifecycle can make all the difference.

SUBSTATION CONTROL SYSTEMS

 

The company continues to deliver proven solutions for the optimization of electrical substation operations. STREFA’s control systems division delivers an extensive range of products and services designed to enable energy providers to control, monitor and protect substations in the most effective manner possible with the lowest lifecycle cost.

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