International journal of Engineering Works最新文献_第8页

Design and Analysis of Neutral Grounding Transformer for Hydro Alternators 水力发电机中性点接地变压器的设计与分析

International journal of Engineering Works Pub Date : 2019-10-15 DOI: 10.34259/ijew.19.610374378

Muhammad Bais, Abdul Basit, M. Sadiq, Israr Ahmad

{"title":"Design and Analysis of Neutral Grounding Transformer for Hydro Alternators","authors":"Muhammad Bais, Abdul Basit, M. Sadiq, Israr Ahmad","doi":"10.34259/ijew.19.610374378","DOIUrl":"https://doi.org/10.34259/ijew.19.610374378","url":null,"abstract":"Power Generators of high KVA rating especially that of hydropower plant are very much prone to the ground faults. Stator ground faults are the most common winding failure in generators. During stator ground faults, short circuit currents flow from the damaged phase to ground through the stator core. Experience has shown that stator ground fault damages are proportional to phase-to-ground fault current as well as fault duration. For that reason, Generator Neutral Grounding must be applied in order to; I. Limit phase-to-ground fault current. II. Provide a means of stator ground fault detection. There are various generator grounding classes and types available. In this paper, high-resistance grounding has been chosen. High-resistance generator neutral grounding scheme based on a grounding transformer with a secondary resistor The advantage of the distribution transformer resistor combination is that the resistor used in the secondary is of comparatively low ohmic value and of rugged construction as compared to obtaining the same result by installing a highohmic, low-current resistor directly in the generator neutral. This research introduces some important and applicable practices which came from few years of practical as well as theoretical studies and discussions with some national and international power system experts. The research was made on the hydro power plants installed at Tarbela generating unit. The important parameters concerning the high impedance grounding of the generator were calculated. These results will be a kind of ready references for neutral grounding transformer design calculations and analysis. Keywords— NGT (Neutral Grounding Transformer), KVA Rating (Kilo Volt Amperes), Secondary Resistor, Tarbela Generating Unit.","PeriodicalId":221480,"journal":{"name":"International journal of Engineering Works","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133432023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential Assessment of Biogas and its Social Values in Khyber Pakhtunkhwa 开伯尔-普赫图赫瓦省沼气及其社会价值的潜在评估

International journal of Engineering Works Pub Date : 2019-10-15 DOI: 10.34259/ijew.19.610379386

Abd Ur-Rehman, Z. Rehman

引用次数: 0

Renewable Energy Potential in Khyber Pakhtunkhwa 开伯尔-普赫图赫瓦省的可再生能源潜力

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610360364

Asif Ijaz, S. Z. Farooqui

{"title":"Renewable Energy Potential in Khyber Pakhtunkhwa","authors":"Asif Ijaz, S. Z. Farooqui","doi":"10.34259/ijew.19.610360364","DOIUrl":"https://doi.org/10.34259/ijew.19.610360364","url":null,"abstract":"Energy is a prerequisite for sustainable development in todays world. Pakistan is a developing country in the South East Asia with a population of more than 210 million. Pakistan is highly dependent on imported oil and gas since a long time. The share of installed renewable energy capacity uptil now is 6%. Khyber Pakhtunkhwa (KP) is one of the four provinces of Pakistan. KP is blessed with a significant amount of renewable energy potential which includes hydroelectric, solar, wind and biomass. This paper starts with Pakistan’s energy scenario including the current energy supply and demand gap. It is then followed by a discussion on the renewable energy potential across KP. Hydropower alone has a total potential of around 25000 MW. Average daily solar radiation for KP is found to be 4.99kWh/m/day It was found that daily solar radiation remains high in the summer season from April-July and then falls in the winter season. In KP, Mardan receives the highest daily solar radiation in June and Chitral receives the lowest daily solar radiation in December. The province is also blessed with biomass. KP has total livestock population of 43 million including cows, buffaloes, sheep and goats. Waste from animals can be converted into biogas which can be used for cooking and heating purposes. Some parts of the province like Malakand, Buner, Haripur have also some wind potential which is enough to provide electricity to the nearby villages and communites. The paper then discusses reasons for energy shortfall followed by short term and long term measures that can be adopted by KP government to tackle energy crisis. Keywords— renewable energy, hydroelectric, solar energy, wind energy, biomass, Khyber Pakhtunkhwa","PeriodicalId":221480,"journal":{"name":"International journal of Engineering Works","volume":"12 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114024912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improved Steiner Tree Scheme Applied to Wireless Sensor Networks for Path and Energy Optimization 改进的斯坦纳树算法在无线传感器网络路径和能量优化中的应用

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610347353

Muhammad Zahoor

引用次数: 0

Extensive Performance Evaluation Of a 75Kg Solar-Biomass Hybrid Tunnel Dryer with Several Types of Agricultural Products 用于多种农产品的75公斤太阳能-生物质混合隧道干燥机的广泛性能评估

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610339346

Sahibzada Imad ud din, Asif Ali, S. Z. Farooqui

引用次数: 0

Analysis Stduy of Different Control Schemes Used For The Improvement Of Transient Stability: A Review 用于提高暂态稳定性的不同控制方案的分析研究综述

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610333338

N. Ullah, Naeem Arbab, Uzair Muhammad, T. Ahmed, Nisar Ahmed

引用次数: 0

Analysis of Electricity from Municiple solid waste of Peshawar City by Utilized plasma Arc Gasification Technique 利用等离子弧气化技术对白沙瓦市城市生活垃圾发电的分析

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610324332

Wajid Ali, M. Asif

引用次数: 1

Modelling and Optimization of Small Scale Solar Organic Rankine Cycle for Islamabad, Pakistan 巴基斯坦伊斯兰堡小规模太阳有机朗肯循环的建模与优化

International journal of Engineering Works Pub Date : 2019-10-04 DOI: 10.34259/ijew.19.610354359

Marva Hadia, Isb Pakistan Nust

引用次数: 0

Analysis of Biogas Technology Adoption at Household Level and its Impact on Sustainable Livelihoods 家庭层面沼气技术采用分析及其对可持续生计的影响

International journal of Engineering Works Pub Date : 2019-09-22 DOI: 10.34259/ijew.19.609314323

M. Haseeb, Saddam Ali, S. Saher

{"title":"Analysis of Biogas Technology Adoption at Household Level and its Impact on Sustainable Livelihoods","authors":"M. Haseeb, Saddam Ali, S. Saher","doi":"10.34259/ijew.19.609314323","DOIUrl":"https://doi.org/10.34259/ijew.19.609314323","url":null,"abstract":"The incessant depletion of world energy resources and the global environmental deterioration are a good indicator of banishing the conventional energy extraction technologies in favor of renewable and sustainable options. Pakistan being an agrarian society is home to one of the largest proportion of population dependent on agricultural products and livestock to make ends meet. Fortuitously this also provides an abundant resource for biomass which can be utilized for generating biogas energy. In the era of renewable energy boom, the resource has poignantly not been fully utilized. Whatever portion of the biogas energy has been tapped is not proliferating across the country owing to the lack of knowledge about the impacts of this precious resource. This research endeavor attempted to investigate the impact the biogas technology is imposing on the households that have adopted it. A total of 162 households composed of both adopters and non adopters of the technology were surveyed in the Dera Ismail Khan District of Pakistan in addition to the meetings and discussions with the relevant stakeholders. Resultantly the factors vastly impacting the adoption of the biogas technology were uncovered. Accordingly the apprehensions and misconceptions of the households not employing the technology despite possessing the resources necessary also came to surface. It was found out that the technology had profound impacts on the environment, education, and the health of the adopting families. However the age, education level, and gender of the target population did not bear any correlation with the decision to adopt the technology itself. The major barrier to the adoption of the technology in the target area was the high upfront costs of the technology, and low awareness about the technology’s installation, and maintenance. Keywords— Biogas, Social impact, Livelihoods, rural development, Environment","PeriodicalId":221480,"journal":{"name":"International journal of Engineering Works","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131332277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the Effect of Different Burning Techniques on the Chemical Composition 评价不同燃烧技术对化学成分的影响

International journal of Engineering Works Pub Date : 2019-09-17 DOI: 10.34259/ijew.19.609300304

M. F. Ullah, Sheraz Abbas, Faizullah Jan, Zeeshan Khan, M. Khubaib

引用次数: 0