Primary Substation Projects

Ensto offers comprehensive expertise in primary substation projects and delivers turnkey solutions from planning to commissioning for electricity distribution networks, wind power production and industrial use.

Full Turnkey Primary Substation

Ensto Maviko has designed and constructed a full turnkey primary substation solution for a wind farm in Oulainen, Finland. The park was built by the wind farm developer wpd Suomi. The seven-turbine power park, with a combined total output of 41.3 MW, now supplies electricity to the national transmission grid.

Critical Hubs in the Electricity Distribution

The primary substations are the critical hubs in the electricity distribution and transmission networks, as they transfer the electricity from the transmission network to distribution network and back. The distribution system operators are in the key role in making sure that there will be distribution with good quality power available in all situations and data communications are functioning securely.

Ensto delivers its strong expertise in primary substation projects as turnkey solutions from design to commissioning, or as smaller sub-assemblies. In addition, all kinds of substation extensions and refurbishments and maintenance work are carried out according to customer needs. The solutions can be delivered to electricity distribution networks, renewable energy production and industrial use and serve as the basis for a modern smart power grid.

Turnkey Projects

Within the green transition the need for substations increases remarkably. We deliver new primary substations on a turnkey basis and refurbish old ones with full service. Whether your need is within renewable energy production, electricity distribution and transmission, or industry, we can provide a cost-effective solution for you.

Our primary substations are equipped with advanced control and protection systems, meeting today’s customer requirements for remote monitoring and communication. We always take requirements of the security of energy supply into account. Our strengths lie in extensive knowhow, long experience in projects and their managing, and long customer relationships.

Solutions

Refurbishing an Existing Primary Substation

Our turnkey deliveries cover the total projects of refurbishing an existing primary substation. We also make risk analysis on future modernization destinations or refurbishment needs. Examples of projects:

Replacement of 110kV circuit breakers and substation renovations
Replacement of 110kV surge arresters
Modifications to 110kV busbars
Replacement of 20kV circuit breakers
Addition of 20kV switchgear
Modifications and installations of 20kV switchgear
Replacement of protection relays
Replacement/addition of arc protection
Replacement of direct current and auxiliary power systems
Upgrade and configuration of remote-control system.

Our strengths lie in extensive know-how, long experience in projects and their managing, and long customer relationships.

Constructing a New Primary Substation

Building a weatherproof distribution network generates changes in the grid infrastructure. Hence, it is often more profitable to build an entirely new substation next to the existing one than to refurbish the old station. We offer our extensive knowledge and long-term expertise with our customers and help them in building primary substations from the scratch.

Our turnkey service always includes customizing the project according to the customer’s needs. We take care of even the smallest details during the consultation, planning, design, procurement, civil engineering, construction, testing and commissioning of the substation entity. The work is done in close collaboration with the customers, and our technical support helps them also after the project is completed.

Comprehensive Documentation Services

The advantages of keeping the primary substation drawings up to date and compatible with installations are obvious: renovations, modifications and additions are easier, faster and cheaper to implement, the time needed to resolve potential faults is reduced and the procurement of spare parts and replacement equipment is facilitated.

Our services include updating and digitizing substation documentation. Together with the customer, we assess the current condition and reliability of the drawings and determine the scope of work based on specific needs. With years of experience, we provide accurate, user-friendly documents that reflect the actual situation. Our documentation library contains the most common operation and maintenance instructions, which we can provide in electronic format.

Long-term Experience

For us, close cooperation also means open, timely and professional though easy-going communication. Our organization is flat and the information flows smoothly both internally and towards the customers. They get timely answers to their questions and hence, also the project schedules are kept. We are proud of our knowhow and the way we work for the customer’s benefit.

We have invested a remarkable amount of time and other resources for gaining a thorough understanding on building primary substations. During the years we have developed our own solution including specifically designed concrete and metal structures and our way of constructing the substation entity. We know what we do, and we do what we promise. Our customers can rely on that. This is of great importance as the lifetime of a primary substation should reach 50 years.

⁠Contact us when you need a new or refurbished substation for electricity distribution, industrial or wind power projects. We take care of even the smallest details during the consultation, planning, design, procurement, civil engineering, construction, testing and commissioning of the substation entity.

Elenia orders the renovation of its primary substations from Ensto Maviko.

Renovation of Primary Substations from Ensto Maviko

Elenia, the second biggest distribution system operator in Finland, orders the renovation of its two primary substations from Ensto Maviko. The substations are located in North Ostrobothnia, in Pyhäjoki and Siikajoki municipalities, south of Oulu.