FUJI ELECTRIC JOURNAL March/2005 (Vol.78-No.2)

TOP PAGE Thermal Power Plants

Trends and Future Outlook for Thermal Power Plants
Hiroshi Nishigaki
The worldwide demand for electric power is increasing steadily. As a manufacturer of thermal power plants, Fuji Electric has a social duty to supply highly reliable plants that provide high-performance with a low investment cost. To fulfill this duty, Fuji Electric is researching and developing technology for various types of steam turbines and generators. Fuji Electric also provides after-sales service to realize economical operation of the thermal power plants.

Outlook and Trends of Overseas Thermal Power Plants
Masahiro Fujiwara
Despite an improving trend in Japanese domestic economic indicators, the Japanese market for thermal power plants is sluggish and no significant recovery is expected in the short term. On the other hand, order receipts are brisk and business discussions are progressing favorably for thermal power plants in the "BRICs" nations of Brazil, Russia, India and China as well as in developing countries, and we expect this condition to continue for the time being. As a matter of fact, all orders received by Fuji Electric in FY2004 for new plants were for overseas destinations. Based on these circumstances, this paper discusses the outlook and trends of overseas thermal power plants as seen from Fuji Electric's unique perspective.

Accomplishments of Thermal Power Plants in China
Shigeru Asari
The recent economic development in China has been remarkable, and together with a high rate of growth, the demand for electrical power in China is increasing sharply. Fuji Electric has delivered several thermal power plants in order to help eliminate the shortage of electrical power and to contribute to economical development in China. This paper presents an overview of the four 600 MW thermal power plants that were ordered in 2003 as well as other thermal power plants which have already been delivered to China or are now being designed. Fuji Electric intends to contribute to the progress of the Chinese economy by supplying plants that satisfy user requirements for highly efficient and highly reliable operation with excellent maintenance performance.

Fuji-Siemens Combined Cycle Power Plant
Tadashi Ikeda, Junichiro Takeda, Takao Yamamoto
With its advantages of highly efficient power generation, easy startup and shutdown, and low impact on the environmental, the combined cycle method of electrical power generation satisfies market requirements and has come into widespread use. With the increase in steam temperature and pressure conditions and cycle optimization corresponding to the development of a 1,300 class and then a greater-than- 1,400 class of high performance gas turbines in the 1990s, a dramatic increase in combined cycle performance has been achieved. This paper describes the parameters that affect performance of combined cycle power plants and also introduces the combined cycle power plant of Fuji Electric and Siemens (Fuji-Siemens).

Fuji Electric's Medium-capacity Standard Steam Turbines "FET Series"
Koya Yoshie, Michio Abe, Hiroyuki Kojima
"FET Series" medium-capacity standard steam turbines by Fuji Electric feature a wide range steam conditions and outputs, with low cost and high efficiency. Fuji Electric has many successful experiences corresponding to the application of advanced technology to achieve higher efficiency, enhanced operating performance, maintainability and reliability. And they were corresponding to diverse array of specifications such as the function for plant process steam system by industry owned power plant, or suitable design for combined cycle-use, and the requests for the increasing capacity of the unit. Meanwhile, with the aim of reducing construction costs, Fuji Electric has accumulated an abundance of experience in application of downsizing technology and such structural configurations as axial-flow exhaust type and upward exhaust type steam turbines, some of which are introduced in this paper.

Present Developmental Status of Fuji's Turbine Generators
Hiromichi Hiwasa, Toru Hase, Kohji Haga
Shorter delivery times, lower prices and stabilized quality are marketplace requirements for turbine generators. To meet these requirements, Fuji Electric has increased the capacity of its air-cooled and indirect hydrogen-cooled generators and has developed a series of these types of generators. This paper presents an overview of the technological development during the process of developing this generator series and the manufacturing automation technologies for quality stabilization.

A Review of Geothermal Power Generation
Masataro Inagaki
The total installed capacity of geothermal plants throughout the world reached approximately 8,900 MW in 2005. Of this total, the geothermal steam turbines and generators supplied by Fuji Electric account for 1,558 MW, or 17.5 % of the installed capacity worldwide. Over the last 10 years, Fuji Electric has supplied 12 STG units for seven geothermal power plants, and the combined total capacity of these units is 734 MW, or 35 % of the total installed capacity during this period. This paper explains the workings of a typical geothermal power plant and also describes the status of the geothermal power generation industry over the past 5 years, during which time growth has slowed due to the Asian economic crisis, but future growth seems promising in Indonesia, Philippines and New Zealand where demand for electrical power is increasing.

Small Capacity Geothermal Binary Power Generation System
Shigeto Yamada, Hiroshi Oyama
Japan is a volcanic country with hot springs distributed throughout. Focusing not only on large-scale geothermal power generation but also on the effective utilization of unused hot spring energy to generate electrical power, Fuji Electric is in the process of commercializing a small capacity geothermal binary power generation system capable of generating electric power using low temperature and small capacity geothermal resources (hot spring resources). This paper presents an overview of the background and of the present status of this development.

Recent Technologies for Geothermal Steam Turbines
Yoshihiro Sakai, Kenji Nakamura, Kunio Shiokawa
Since delivering Japan's first practical geothermal power facility in 1960, Fuji Electric has delivered more than 50 units in Japan and overseas, and is one of the leading manufacturers worldwide. In particular, to deal with the highly corrosive geothermal steam, Fuji Electric performed a continuous series of corrosion testing at its geothermal power generation sites and conducted materials testing in its laboratories, and incorporated this valuable accumulated data into its turbine designs to achieve high reliability. Moreover, by utilizing advanced blading technology that incorporates the recent flow analysis methods, Fuji Electric achieved a remarkable improvement in geothermal turbine efficiency.

Recent Technology for Reusing Aged Thermal Power Generating Units
Masaki Kato, Seiichi Asano, Shousuke Fukuda
Approximately 70 % of thermal power generating units delivered thus far have been delivered to aged power plants. The capability to incorporate new technology while redeploying existing equipment to a large extent and of solving problems associated with the aged equipment and then reusing that equipment at low cost, is anticipated to create large demand by facilitating new proposals matched to customer needs. This paper introduces Fuji Electric's recently implemented technology for reusing aged thermal power generating units and examples thereof.

Power Plant Facilities Information Total Management System
Toshikazu Kato
Fuji Electric has developed a facilities management system that applies the concept of facilities management a technique for managing buildings and facilities efficiently to power plants. An example application to an internal combustion engine power plant is introduced. This system is characterized by a visual search function that retrieves equipment information in response to a simple mouse click over an equipment symbol on a CAD-generated general equipment layout drawing, piping and instrument diagram, or a single line diagram. Since documentation related to the facilities can easily be retrieved, this system is useful for accumulated knowledge relating to power plants.

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