Hasil Pencarian  ::  Simpan CSV :: Kembali

"Focusing specifically on active compensators and DSP based control algorithms, this book introduces fundamental problems of electrical power, and presents and assesses a range of methods and problems related to improving the quality of electric power supply.;"

"In this paper an improved prediction-based power control is proposed for code division multiple access (CDMA) systems in Rayleigh fading channel environments. One of the most serious problems which degrades the performance of power control algorithm is the effect of feedback delay. To overcome the effect of feedback delay, power control needs to employ prediction algorithm which utilises the correlation property of the past channel samples measurementsto predict the future sample values. In CDMA power control, however, the correlation property of channel measurements is destroyed because the transmit power is continuously updated for each power control interval. The prediction algorithm in this paper uses the recursive least square (RLS) technique and an improved predictor algorithm is proposed to compensate for the channel correlation. The result shows that the performance of improved predictivepower control proposed in this paper evaluated in terms of bit error rate (BER) as a function of bit energy-tointerference power density ratio Eb/Io improved significantly from that of the conventional predictor."

"Problems of voltage quality are becoming increasingly important with the growth in power electronics and the high-sensitivity of electronic equipment. Translated and updated from the German original published by VDE-Verlag, this book successfully details the theoretical and practical background to low voltage conducted disturbances including harmonics, voltage fluctuation/flicker and asymmetrical voltages. Each chapter is illustrated with practical examples and exercises based on the authors' experience of application problems, including measurement, assessment and remedial measures. The book is set in the context of European standards."

"This book offers a brief review of and investigations into the power quality problem in the new technology of co-phase high-speed traction power supplies, which benefits for higher locomotive speed. In addition, it presents detailed design procedures and discusses the chief concerns in connection with a newly proposed solution: compensation in co-phase traction power using a co-phase railway hybrid power quality conditioner (Railway HPQC). Further, it provides essential information on the modeling of power quality in co-phase, high-speed traction power supplies, and on power quality compensation algorithm derivations. Lastly, it delineates the design of railway HPQC and analyzes the effect of different parameters on its performance to accommodate different priorities. All design is supported by simulations and the results of experimental verification."

"This book focuses on oil-paper insulation included in power transformers, especially for EHV and UHV transformers. The importance on insulation ever increased due to a growing voltage rating of transformers. Within the last decades, although research on the transformer insulation and diagnosis methods has advanced a lot, the insulation of HV transformers remained more or less unchanged. The book is divided into five chapters; the first and second chapters explain the basics of oil insulation, while the third chapter focuses on paper insulation. The final two chapters deal with the methods and outcome of testing both techniques. The primary target audience for this book is graduate students and power system engineers."

"Turbin merupakan salah satu alat yang dipakai semua industri listrik sebagai penggerak utama dalam suatu pembangkit yang merubah energi fluida menjadi energi mekanik/energi gerak. Dimana energi uap panas yang ada di dalam bumi kali ini dimanfaatkan untuk menggerakan langsung roda turbin. Setelah itu turbin akan memutarkan generator dimana energi mekanis akan dirubah menjadi energi listrik. Kualitas uap pada PLTP Indonesia Power Kamojang berperan penting terhadap performa turbin dan daya yang dihasilkan karna niali entalpi dari kualitas uap tersebut.Kondisi saat ini tekanan rata-rata yang diberikan dari reservoir adalah 6,8 Bar, setelah itu tekanan yang masuk ke turbin yaitu 6,5 Bar dan temperature 161°C. Perhitungan efisiensi turbin yang dilakukan secara akurat dapat mempermudah kita dalam pengamatan daya listrik yang dihasilkan oleh PT. Indonesia Power Kamojang.Dalam tugas akhir ini kami akan membahas tentang performa kerja dari turbin uap yang diakibatkan oleh pengaruh temperatur lingkungan yang ada di PLTP Indonesia Power Kamojang.

---

A turbine is a rotary mechanical device that is used by electrical power industry that extracts energy from a fluid flow and converts it into useful work. In the steam heat energy that is in the earth, will be used to confront and drive the turbine wheel. After that the turbine will spin a generator which will be converted mechanical energy into electrical energy. Steam quality of PLTP Indonesia Power Kamojang and type of turbine itself is very important to the performance of the turbine and the power generated because niali enthalpy of the steam.Conditions of hot steam (Steam) at the current average pressure that m is supplied from the reservoir is 6.8 bar, after which the pressure coming into the turbine of 6.5 bar and temperatures of 161°C. Turbine efficiency calculation is done accurately make easier for us to observe the electrical power produced by PT. Indonesia Power Kamojang.In the thesis, the author will discuss about the job performance of steam turbines caused by the influence of environmental temperature and also the design of the turbines used in Indonesia Geothermal Power Kamojang."

"Beberapa bangunan kadang terlihat memiliki kekuatan diantara bangunan-bangunan di sekitarnya, seperti bangunan-bangunan pemerintahan, bangunan-bangunan bersejarah. Saya ingin menganalisa bagaimana bangunan-bangunan tersebut menyampaikan pengaruhnya kepada manusia sehingga manusia dapat merasakan kekuasannya. Hal ini mungkin dapat dilihat dari penggunaan bentuk-bentuk elemen-elemen yang digunakan, tata letak bangunan di site, tata letak site terhadap bangunan-bangunan atau site lain di sekitarnya, penggunaan warna, dsb.

---

Some buildings seem to have a power among the others which surround it, such as government buildings, old buildings which have important history, etc. I would like to analyze how these buildings give effects to us so that we can feel it's Power. Possibly it can be explain by building elements, building position at the site, the influence of site position toward the others site and buildings surrounding it, colour using, etc."