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FUJI ELECTRIC JOURNAL 2002 Vol.75-No.11
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Energy Solutions |
Overview of Fuji Electric's Energy Solutions
Motofumi Matsumura, Norio Kanie, Kazuhiro Oohashi
Ever since the COP3 (3rd Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change) was held in Kyoto in 1997, there has been greater awareness of the problem of global warming, even among the general public. However, amendments to Japan's "Electric Utilities Industry Law" are resulting in an easing of regulations and deregulation of the market. The global warming problem and the energy problem present large challenges that must be resolved simultaneously. This paper introduces an overview of Fuji Electric's efforts toward providing energy solutions for resolving these problems.
Fuji's Energy Saving Solution and ESCO
Eiji Fukuda, Takeshi Uemura, Kazutoshi Onoue
Japan is undergoing a transformation toward a recycling-oriented, CO2 emission-curbing society, and there is an urgent need to rapidly reduce energy consumption. This paper will describe an amendment to the Energy Conservation Act, and present actual methods and examples of an energy saving solution concept that utilizes a database. The ESCO (Energy Service Company) business is also introduced as a potentially optimal method to promote and expand energy savings through the outsourcing of additional investment, education of engineers, and discovery of energy saving items.
New Energy Solutions
Tetsuo Saitou, Shoichi Yamato, Masahiro Sakurai
Japan's Renewable Power Portfolio Standard (RPS) will become effective as of fiscal year 2003, requiring that new energy be provided at a constant percentage of the electric power supply. This obligation will be accomplished through the holding, buying and selling of bonds from electric power suppliers of renewable energy. This paper introduces Fuji Electric's efforts in wind power and mini hydropower gener-ation technologies.
Energy Management System for Environment Management
Shoichi Matsumoto, Michikazu Yokouchi, Yoshinori Oomuro
The shift toward environmental management by private-sector companies is accelerating. Economic factors weighed heavily on prior energy policies, but now it is increasingly important that energy policies also consider environmental management. This paper presents an overview of such a new energy management system and describes an example installation. An overview of the system's environmental database is also described.
Tools for Optimal Operation of Energy Plants
Shinji Kitagawa, Tetsuro Matsui, Yoshikazu Fukuyama
Large facilities such as factories and office buildings require various types of energy such as electric, steam and thermal energy, and energy plants must be able to supply those types of energy. This paper presents various tools developed by Fuji Electric for optimal operation of energy plants. Annual plant operation costs can be reduced by 1 to 5% using load forecasting tools such as analyzable structured neural networks and meta-heuristics for determining the optimal operation strategies.
New Equipment for Substations
Masami Hamamura, Shunichi Sugawa, Satoru Osawa
Substations supply high-quality, low-cost electric power directly to public facilities or to private-sector facilities such as factories and buildings, and have the important responsibility of ensuring the stable operation of various power supplies for manufacturing, data processing, fire prevention, safety and other types of equipment. Therefore, sub-stations are required to have extremely high reliability. As the evolution toward a highly sophisticated information society has progressed, demands have increased for the quality, rather than quantity, of electric power. Moreover, recently, the component equipment in a substation is required to be environmentally friendly in addition to having lower power consumption, smaller size, and higher intelligence. This paper introduces the latest equipment for substations.
Power Quality Solution and the Supporting Technologies
Yosuke Nakanishi, Kouji Yutani, Shinsuke Nii
A power quality solution provides customers having power quality problems with a comprehensive solution, from the proposal of various countermeasures and equipment to actual problem resolution, based on systems analysis techniques that facilitate consideration of the phenomenon and its possible countermeasures. This paper introduces the philosophy behind the power quality solutions provided both to power users and suppliers, the challenges encountered and Fuji Electric's efforts to overcome those challenges.
Energy Data Monitoring System
Jinpei Kuwayama, Hiroki Okabayashi, Hiroyuki Yamano
As awareness increases of environmental problems and the power market advances toward deregulation, energy data monitoring for achieving energy savings has increased in demand. In response to this demand, Fuji Electric is providing customers with a series of energy savings solutions, ranging from the tracking and analysis of their energy utilization status through the proposal of countermeasures. Fuji Electric has a wide line-up of energy data monitoring tools to realize energy solutions. This paper presents an example system configuration that utilizes these tools and describes the expansion of added value services.
Use of an ESCO with a Co-generation System
Hideo Kaneko, Mamoru Koyama, Kazuaki Koshi
Cogeneration systems (CGSs) that employ the services of an energy service company (ESCO) can achieve a large energy savings by the minimum burden and are thus attracting attention as a new format for popularizing and promoting CGSs. Fuji Electric, together with C Energy Co., Inc, Kawasaki Heavy Industries, Ltd., Iwatani International Corp., and Itochu Corp., have jointly founded S-energy Service Co., Ltd. and has begun early efforts in this field. This paper presents an overview of the thermoelectric variable-type CGS at S-energy Service Co.'s Matsumoto business office, the operating support system and the high-speed current-limiting interrupting device, and describes details of the notice filing procedure, subsidies, and operation pertaining to CGS construction.
Load-leveling Using Late-night Electricity
Shinsuke Nii
Load-leveling by making full use of late-night electricity can achieve reduced peak demand and improved load factor, and conse-quently provides such benefits as stable power demand and supply, energy savings, reduced CO2 emissions, and lower power supply costs through less investment in power supply equipment. This paper describes the types and effectiveness of load-leveling, introduces the sodium sulfur battery and redoxflow battery as battery energy storage systems and the dual flow inverter, and presents the dimple-method heat storage system. The economical considerations of load-leveling are also discussed.
Fuel Cell for Sludge-gas Utilization System
Kenji Yago, Yoshimi Horiuchi, Masakazu Hasegawa
The utilization of biomass that is both carbon-neutral and recyclable has been promoted based on considerations such as the prevention of global warming, establishment of a recycling-oriented society, creation of new industries, etc. In 1999, Fuji Electric began to apply and develop methane fermentation gas-based phosphoric acid fuel cells, and has achieved favorable operating results. Based on this experience, in 2002, Fuji Electric delivered a 100 kW phosphoric acid fuel cell, which uses sludge-gas, to the Yamagata City Purification Center. This paper presents an overview of the sludge-gas utilization system and describes its effectiveness.
