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Journal Critique
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STUDY OF GEOTHERMAL POWER PLANT ELECTRICAL AND CONTROL SYSTEM WITH EMPHASIS ON RELIABILITY ASPECTS

In Partial Fulfillment of the Requirements for the Subject Electrical Control System

Submitted By: Stephen R. Chua BSEE5A Bulacan State University

Submitted to: Engr. Erwin Magsakay Professor

July 03, 2012

GEOTHERMAL TRAINING PROGRAMME Reports 2002 Orkustofnun, Grensásvegur 9, Number 7 IS-108 Reykjavík, Iceland

STUDY OF GEOTHERMAL POWER PLANT ELECTRICAL AND CONTROL SYSTEM WITH EMPHASIS ON RELIABILITY ASPECTS

Haile Kebede Ethiopian Electric Power Corporation P.O. Box 1233 Addis Ababa ETHIOPIA

ABSTRACT Keywords: electrical system, control system, reliability, geothermal power plant, binary process The main aim when constructing and installing electrical and control systems for a power plant is to have continuous and trouble free operation of the plant. Geothermal power plants are very different from hydro power plants. It is difficult to restart a geothermal power plant after shutdown and it is exposed to H2S corrosion. This report emphasizes plants using the binary process. The electrical system of a geothermal power plant is described, including generator, power transformer, different alternatives for switchgear configuration, protective relaying, auxiliary power supply and instrumentation. The control system configuration is described along with its effect on reliability. Operation and maintenance aspects are discussed, and both the reliability and H2S corrosion prevention aspects are discussed. Finally, the electrical and control systems in the Aluto-Langano geothermal pilot power plant are included as an example.

CRITIQUE

SYSTEM BEING INVESTIGATED The journal Study of Geothermal Power Plant Electrical and Control System with Emphasis on Reliability Aspects is published as a geothermal training programme. It discusses all about the aspects and parameters needed for a full and successful operation of a
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