Generators in Utilities

With our comprehensive portfolio of reliable Siemens Energy generator service products, we can provide you with solutions that are tailor-made to your specific needs. By analyzing the individual operation and maintenance history of your turboset, our experts can customize concepts to help increase reliability, availability and flexibility. Those benefits are the key to success of improving your competitiveness and achieving maximum performance of your generator. We assist you with our unique services for generators, exciters and auxiliaries as well as with inspections and maintenance. Furthermore, with our digital service portfolio we can equip your plant with reliable on-line monitoring systems, predictive maintenance and digital data analysis for generators and high-voltage equipment. By choosing Siemens Energy generator services and solutions, you benefit from decades of experience and technical expertise.

The operation of gas- as well as gas/water-cooled turbogenerators requires a number of auxiliary systems that supply the unit with operating fluids such as gases, seal oil and water. Those generators typically require explosion-protected auxiliary systems.

Siemens Energy offers a comprehensive package of explosion-protected auxiliary systems and can provide a spectrum of innovative service solutions from plant specific planning through installation and commissioning.

When the power output of the turbine is increased, the generator capability needs to be adapted accordingly. Using specifically developed analysis measures, our Siemens Energy experts can quickly assess various options for uprating your generator and provide an individual proposal.

Siemens Energy can offer the following measures for uprating your generator:

Rotor, stator and exciter upgrades with enhanced design for increased rating
Reducing cold gas temperature in generators with closed air-cooled systems
Increase of hydrogen pressure for gas-cooled generators
Uprate of air-cooled generators

Generator Replacement

Complete replacement is in some cases the more cost-effective alternative. A detailed cost/benefit analysis can help you decide if and when an investment in a new generator is economically beneficial compared to maintenance and service expenditures for the current generator. Siemens Energy can provide a matching generator for almost all generator types and configurations.

Specifically designed to replace smaller hydrogen- or water-cooled generator, the air-cooled Footprint™ generator is an easy to implement solution in which the existing foundations and interfaces can be used wherever possible.

Generator Services

With over 150 years of experience, Siemens Energy is a world leader in generator technology and has manufactured many of the largest and most efficient generators in the world.

With Siemens Energy as your service partner, you can have the full benefits of the expertise of our turbine-generator factory personnel, design engineering, service engineering groups, and our regional management and service expertise. We are knowledgeable of potential turbine-generator issues through significant fleet experience and have developed an enormous backlog of field processes, procedures, tooling and trained personnel to quickly address them.

OOEM Solutions

Siemens Energy has the capability to service, repair and modernize air, hydrogen and water-cooled generators, including those of other OEM manufacturers. Depending on the application, our global Service network may be able to inspect OOEM (Other Original Equipment Manufacturer) generator components and recommend appropriate measures. Furthermore, Siemens Energy can reverse engineer and manufacture OOEM parts, such as retaining rings, bearings and collector rings

Transport & Storage Solutions

Siemens Energy offers comprehensive solutions for the efficient and reliable storage and transportation of generator rotors. Their offerings include standard one-way packaging, modular transport containers, and variable transport racks, all designed to ensure optimal protection and condition monitoring. By having generator rotors readily available on-site, downtime during maintenance or unexpected failures can be significantly reduced, ensuring continuous and reliable energy production.

A synchronous condenser (SynCon) is a synchronous motor or generator connected to the grid. Operated as a motor, a SynCon can absorb or provide reactive power, provide short-circuit power and contribute inertia with its stored kinetic energy.

Parallel connected synchronous condensers are mainly used for providing short-circuit power and inertia. They also help to stabilize the network through voltage recovery during faults. This becomes increasingly important with the rising share of renewable power generation that leads to a lack of short-circuit power and inertia.

To explore how synchronous condensers enhance grid stability by providing essential reactive power and inertia, explore our dedicated pages:

With any modernization it is important to verify that all of the measures in the power plant are coordinated. Siemens Energy provides project management and can coordinate and harmonize the various scopes of supply and services. Additionally to generator modernizations, Siemens Energy is the right partner to provide comprehensive plant service solutions for high-voltage equipment, transformers, isolated phase bus ducts as well as excitation equipment (AVR).

Your overall benefits can include: