Thursday, June 18, 2009

Guide on How to Develop a Small Hydropower Plant (PDF)

by : European Small Hydropower Association - ESHA
Date : 2004 / Pages : 296 / PDF Format

ACKNOWLEDGEMENTS
This Guide is an updated and adapted version of the publication “Layman’s Guidebook on How to Develop a Small Hydro Site”, published by ESHA - the European Small Hydropower Association – in 1998 in the frame of the European Commission DG-TREN (Directorate General for Transport and Energy) ALTENER programme.
Although based on the original, this guide has been entirely updated and adapted due to significant changes in the sector in the latest years as concern environmental and administrative aspects in particular. The updated version is available in English, French, German and Swedish what has added value to the already existing Spanish and Italian versions of the original publication.



EXECUTIVE SUMMARY
Developing a small hydropower site is not a simple task. There are many aspects which have to be taken into consideration, covering many disciplines ranging from business, engineering, financial, legal and administration. These will all be necessary at the different development stages from, first choosing a site until the plant goes into operation.
The “Laymans Guide” guide brings together all of these aspects in a step-by-step approach, and will serve as a useful tool for a potential developer of a small hydropower scheme.
This guide is divided into nine chapters and covers the basic concepts, meaning of definitions and technological issues to be addressed.

Chapter 1
Introduces basic concepts, such as the definition of small hydropower, types of schemes, ways of exploiting the water resource available and gives a general overview of the guide’s contents,

Chapters 2 through to 9
describe the essential steps to be followed to evaluate a proposed scheme before deciding whether to proceed to a detailed feasibility study.

The basic concepts considered in the guide are:
  • Topography and geomorphology of the site.
  • Evaluation of the water resource and its generating potential.
  • Site selection and basic layout.
  • Hydraulic turbines and generators and their control.
  • Environmental impact assessment and mitigation measures.
  • Economic evaluation of the project and financing potential.
  • Institutional framework and administrative procedures to obtain the necessary consents
Source : www.esha.be
Download : Part-1 | Part-2

Wednesday, June 17, 2009

Google Search Engine Optimization (SEO)


Foreword

SEO is an acronym for "search engine optimization" or "search engine optimizer".
Keep in mind that the Google search results page includes organic search results and often paid advertisement (denoted by the heading "Sponsored Links") as well. Advertising with Google won't have any effect on your site's presence in our search results. Google never accepts money to include or rank sites in our search results, and it costs nothing to appear in their organic search results.
Search engine optimization is often about making small modifications to parts of your website. When viewed individually, these changes might seem like incremental improvements, but when combined with other optimizations, they could have a noticeable impact on your site's user experience and performance in organic search results. In other word, search engine optimization (seo) is about putting your site's best foot forward when it comes to visibility in search engines.

Description
Google's Search Engine Optimization Starter Guide is an effort to help teams within Google, but thought it'd be just as useful to webmasters that are new to the topic of search engine optimization and wish to improve their sites' interaction with both users and search engines. Although this guide won't tell you any secrets that'll automatically rank your site first for queries in Google, following the best practices outlined below will make it easier for search engines to both crawl and index your content.

Content
  • Create unique, accurate page titles
  • Make use of the "description" meta tag
  • Improve the structure of your URLs
  • Make your site easier to navigate
  • Offer quality content and services
  • Write better anchor text
  • Use heading tags appropriately
  • Optimize your use of images
  • Make effective use of robots.txt
  • Promote your website in the right ways
  • Make use of free webmaster tools
  • Take advantage of web analytics services
Source
Google Webmaster Central

Download PDF
Google's Search Engine Optimization Starter Guide, Version 1.1, 13 Nov 2008, latest version at Google Webmaster Central

DOE - ENGINEERING SYMBOLOGY, PRINTS AND DRAWINGS (PDF)

DOE - ENGINEERING SYMBOLOGY, PRINTS AND DRAWINGS
DOE FUNDAMENTALS HANDBOOK
Author :
U.S. Department of Energy
Date : January 1993 / Type : PDF / Pages : 216



FOREWORD
The Department of Energy (DOE) Fundamentals Handbooks consist of ten academic subjects, which include Mathematics; Classical Physics; Thermodynamics, Heat Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear Physics and Reactor Theory.

ABSTRACT
The Engineering Symbology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and technical staff with the necessary fundamentals training to ensure a basic understanding of engineering prints, their use, and their function. The handbook includes information on engineering fluid drawings and prints; piping and instrument drawings; major symbols and conventions; electronic diagrams and schematics; logic circuits and diagrams; and fabrication, construction, and architectural drawings. This information will provide personnel with a foundation for reading, interpreting, and using the engineering prints and drawings that are associated with various DOE nuclear facility operations and maintenance.

Download : Volume-1 + Volume-2

DOE - ELECTRICAL SCIENCE (PDF)

DOE - ELECTRICAL SCIENCE
DOE FUNDAMENTALS HANDBOOK
Author:
U.S. Department of Energy
June 1992 / Type : PDF / Pages : 552 (total)



FOREWORD
The Department of Energy (DOE) Fundamentals Handbooks consist of ten academic subjects, which include Mathematics; Classical Physics; Thermodynamics, Heat Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear Physics and Reactor Theory.

ABSTRACT
The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.
  • Volume 1 : Basic Electrical Theory, Basic DC Theory
  • Volume 2 : DC Circuits, Batteries, DC Generators, DC Motors
  • Volume 3 : Basic AC Theory, AC Reactive Components, AC Power, AC Generators, Voltage Regulators
  • Volume 4 : AC Motors, Transformers, Test Instruments and Measuring Devices, Electrical Distribution Systems

Download: Volume-1 - Volume-2 - Volume-3 - Volume-4

DOE - ELECTRICAL SAFETY (PDF)

DOE - ELECTRICAL SAFETY
DOE FUNDAMENTALS HANDBOOK
Author :
U.S. Department of Energy
January 1998 / Type : PDF / Pages : 324



PURPOSE
Electrical Safety Handbook presents the Department of Energy (DOE) safety standards for DOE field offices or facilities involved in the use of electrical energy. It has been prepared to provide a uniform set of electrical safety guidance and information for DOE installations to effect a reduction or elimination of risks associated with the use of electrical energy. The objectives of this handbook are to enhance electrical safety awareness and mitigate electrical hazards to employees, the public, and the environment.

SCOPE
This handbook provides general information to enhance understanding of DOE Orders, national codes, national standards, local, state, and federal regulations. This handbook shall not supersede more stringent requirements in those applicable codes, standards, and regulations.

Download (please check again later for download link)

DOE - CLASSICAL PHYSICS (PDF)

DOE - CLASSICAL PHYSICS
FUNDAMENTALS HANDBOOK
Author :
U.S. Department of Energy
June 1992/Pages-142/PDF



FOREWORD
The Department of Energy (DOE) Fundamentals Handbooks consist of ten academic subjects, which include Mathematics; Classical Physics; Thermodynamics, Heat Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear Physics and Reactor Theory.

ABSTRACT
The Classical Physics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of physical forces and their properties. The handbook includes information on the units used to measure physical properties; vectors, and how they are used to show the net effect of various forces; Newton's Laws of motion, and how to use these laws in force and motion applications; and the concepts of energy, work, and power, and how to measure and calculate the energy involved in various applications. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility systems and equipment.

Download

Wednesday, May 20, 2009

DCAP 3000 | PLTM Mobuya General Protection

PLTM Mobuya, using DCAP-3000 Series Ptrotection & Control Devices. Designed to be used for measurement, control and protection of power equipment in medium and high voltage networks. State of the art digital technology integrates all the secondary functions into a single unit, installed directly on switchgear and in switch-bay beside switching object. Connecting all these device in a station via RS485 communication interface with shielded twisted wire to construct an integrated automation system.

For Protection, PLTM Mobuya Using :
DCAP-3001, transformer feeder protection & control device, applicable to transformer feeder and station-used transformer with a circuit breaker
DCAP-3040, two-winding differential protection device. Suitable for power transformer, generator-transformer blocks and power reactors, adopts 2nd harmonic/waveform symmetry restraint for inrush current (optional) and percentage restraint principle.
DCAP-3080, generator protection & control device, applicable to medium-sized generators of 200 MW or lower. Protection including overcurrent protection, undervoltage protection, overvoltage protection, zero sequence overvoltage protection, negative sequence overcurrent protection, reverse power protection, under and over frequency protection.
DCAP-3083, designed for one-point or two-point earth-fault protection of a synchronous machine rotor. The device is applicable to all sorts of capacity of synchronous machines.

PLTM Mobuya Single Line Diagram

PLTM Mobuya Turbine and Generator


PLTM Mobuya Turbines Unit 1 to 3, manufacturing by Zhejiang Jinlun Electromechanical Co. Ltd. on November 2005 Type : Franciss Horizontal - HLD46-WJ-60 Output : 690 – 1758 kW Head : 50 – 100 m Speed : 750 – 1000 rpm.


PLTM Mobuya Synchronous Generator Unit 1 to 3, manufacturing by Zhejiang Linhai Electric Machinery Co. Ltd, on November 2005 Type : SFW-J1000-6/1180 Power : 1000 kW Voltage : 6300 V Current 114.6 A Connection : Y Fields Voltage : 40.3 V Fields Current : 288 A Excitation : Thyristor Speed : 1000 rpm Runaway Speed : 1900 rpm


Sistim Kaskade PLTA Sungai Poigar

Sunday, May 17, 2009

PLTM Mobuya - Sulawesi Utara

PLTM atau Pusat Listrik Tenaga Minihidro merupakan pembangkit tenaga listrik yang menggunakan sumber energi setempat dan juga merupakan sumber energi terbarukan serta ramah lingkungan PLTM Mobuya yang memanfaatkan potensi tenaga air sungai Poigar didesa Mobuya., kecamatan Passi Kabupaten Bolaang Mongondow, merupakan salah satu potensi tenga air untuk pembangkit tenaga listrik minihidro yang layak secara ekonomi dan finansial untuk diuasahan oleh Badan Usaha Kecil dan Menengah mengikuti ketentuan dalam Kepmen No. 1122/30/MEN/2002 tentang Pedoman Pengusahaan Pembangkitan Tenaga Listrik Skala Kecil.

PLTM Mobuya dengan kapasitas terpasang 3 x 1000 kW dapat menghasilkan energi listrik sebesar 21.000.000 kWh rata-rata pertahun akan memenuhi kebutuhan tenaga listrik untuk sistim Kotamobagu dan sekitarnya. Daya listrik yang dihasilkan akan disalurkan melalui sistim jaringan tegangan menengah 20 kV PT PLN( Persero ) Wilayah Sulawesi Utara, Sulawesi Tengah dan Gorontalo.

Deskripsi PLTM Mobuya
Debit (Q) : 3 x 1,67 m3/detik (5 m3/det)
Tinggi Jatuh (h) : 71,0 meter
Kapasitas Terpasang : 3 x 1.000 kW
Energi Tahunan : 21.024.000 kWh

Tuesday, February 10, 2009

Steven E. Pondaag





















Personal Blog of Steven E. Pondaag, ST.
Manado, Sulawesi Utara - Indonesia

Education :
SMA Negeri I Manado (Highschool)
Teknik Elektro (Teknik Tenaga Listrik)
Fakultas Teknik Universitas Sam Ratulangi Manado. (College)

Work:
Senior Engineer of PT.Cipta Daya Nusantara
(Mobuya Minihydro Power Plant)

Speciality: electrical machinery, auxiliaries and grounding

Interest: green energy (renewable)

Website:
on Photoblog
on Facebook

Favourite Quotation:
Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time. - Thomas A. Edison
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