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ANSALDO ENERGIA
TURBOGENERATORS

TURBOGENERATORS

Product catalog summary

Introduction
Ansaldo Energia has a rich history in producing turbogenerators, starting with air-cooled models in the 1920s. The company has manufactured over 500 units ranging from 10 to 330 MVA and more than 200 hydrogen and hydrogen-water cooled units from 40 to 1,220 MVA, contributing to a global capacity exceeding 100,000 MVA.

Air-Cooled Turbogenerators
Designed for both base and peak load operations, these generators offer easy maintenance and high efficiency. Key specifications include various mounting arrangements, cooling methods, a protection degree of IP 54, and static or brushless excitation. They operate at frequencies of 50 Hz (20-350 MVA) and 60 Hz (30-300 MVA), featuring indirect cooled stator windings and direct cooled rotor windings.

Design and Manufacturing
Ansaldo Energia employs CAD/CAM technology for flexible design and manufacturing, ensuring reliability and quality. The generators are self-ventilated with air-to-water coolers, and the stator core is air-cooled, designed for easy maintenance and thermal expansion.

Excitation System
The standard excitation system is fully static, comprising a power transformer, converter, and circuit breaker, ensuring stable power supply and rapid adaptation to load conditions.

Transport and Testing
Generators are designed to meet rail transport limits and can be shipped assembled. Standard tests include stator core magnetization, winding resistance, and mechanical rotor balance, complying with IEEE and IEC standards.

Hydrogen and Water-Cooled Turbogenerators
These generators use hydrogen and water for cooling, with specifications including a mounting arrangement of IM7305, cooling method IC 8 (H1) W7, protection degree IP 54, and hydrogen pressure of 4-7 bar. They operate at 50/60 Hz (400-900 MVA) and are designed for high efficiency and reliability.

Auxiliary Systems
Auxiliary systems manage cooling and seal requirements, including gas and water conditioning systems to maintain optimal operating conditions.

Conclusion
Ansaldo Energia's extensive experience and advanced technology in turbogenerator design and manufacturing ensure high-quality, reliable power generation solutions for a global market.

Overview
The document outlines Ansaldo Energia's capabilities in supplying various power plants, including steam fossil-fired, gas turbine, combined cycle, hydroelectric, geothermal, and nuclear power plants. These can be provided turnkey, in separate lots, or by components. The company's quality systems are ISO 9001 certified.

Contact Information
Ansaldo Energia is located in Genova, Italy, with contact available via phone, fax, or email.

Product Information Disclaimer
The information is illustrative, and product descriptions may change based on market situations. Ansaldo Energia reserves the right to make changes for technical or commercial reasons.

Reference Standards
Generators comply with IEC 60034-1, IEC 60034-3, and IEEE standards.

Coupling
Generators can be coupled to steam and gas turbines with or without gearing. Standard rotor coupling is integral with the rotor shaft, with options for different arrangements available upon assessment.

Start-up and After-sales Services
Ansaldo Energia offers comprehensive services for erection, supervision, startup, and testing, along with worldwide technical assistance, maintenance, spare parts supply, and preventive maintenance programs. Training courses for personnel are also available.

Catalog excerpts

G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:27.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:48.30pt "Franklin Gothic Medium", sans-serif; } ' AnsaldoEnergja A Finmeccanica Company

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.40pt "Franklin Gothic Medium", sans-serif; } .font1 { font:7.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:8.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font5 { font:20.00pt "Franklin Gothic Medium", sans-serif; } .font6 { font:22.00pt "Franklin Gothic Medium", sans-serif; } Turbogenerators Ansaldo Energia produced...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:16.00pt "Franklin Gothic Medium", sans-serif; } Reliability Design features and manufacture Ansaldo Energia air-cooled generators have indirectly cooled stator windings and directly cooled rotor windings. Generators are self-ventilated in a closed circuit with air to water coolers. Special make-up or active-carbon filters can be pro-vided if needed for reasons of air contamination. Direct cooling...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } After curing, the insulation meets all class F require-ments as well as having excellent long-term in-service durability and outstanding mechanical and electrical properties. Conductive varnish and tapes prevent co- The rotor winding can expand uniformly lengthwise to ensure smooth running and minimum sensitivity to rapid load changes. All the insulation materials used in the rotor comply with class F specifications....

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:16.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:10.00pt "Times New Roman", serif; } Excitation system Testing Standard solution consists of fully static excitation System which comprises an excitation power transformer, a power converter with controls and protections, a static circuit breaker and, for excitation systems connected to generator terminals, a startup excitation from...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:16.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:20.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:22.00pt "Franklin Gothic Medium", sans-serif; } Hydrogen cooled/Hydrogen and stator water cooled turbogenerators Design features and manufacture The core is cooled by hydrogen gas flowing in radial ducts. In generators with water-cooled stator windings the core is cooled...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } Forces generated during sudden short circuits are re-strained by heavy rings used as the basic support. In smaller units solid outer rings are sufficient for this purpose. On large generators the end windings can easily be checked for tightness during overhauls using a torque wrench with access through the manholes. This guarantees uniform stiffness of the end winding throughout operating life. Differential...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:14.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:16.00pt "Franklin Gothic Medium", sans-serif; } Auxiliary Systems A number of auxiliary Systems are needed to condition and circulate the water and hydrogen used for cooling and keep the shaft seals supplied with oil. | The gas plant conditions and monitors the coolant The...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:16.00pt "Franklin Gothic Medium", sans-serif; } Excitation system Testing To deliver stable power supply when operating on a network and maintain generator voltage constant during no load operation or station servicing, large generators need a fast-response excitation system capable of adapting the air-gap flux rapidly to load conditions. Static excitation units are particularly suited to the...

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G_773/09_Ansaldo Turbogenerators 09/07/09_AW:Prodotti Ansaldo table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.40pt "Franklin Gothic Medium", sans-serif; } .font1 { font:8.00pt "Franklin Gothic Medium", sans-serif; } ROGEN COOLED TURBOGENERATORS GENERAL CHARACTERISTICS Generators have indirect cooled stator - windings and direct cooled rotor windings. Hydrogen is used as a coolant fluid. Stator core is direct cooled with hydrogen. Frequency Speed Power Rated Voltage Power Range Hz RPM factor kV MVA ■ Protection degree: ■ Excitation: ■ Hydrogen pressure: - Thermal...

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TURBOGENERATORS

TURBOGENERATORS

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