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Indian Journal of Power and River Valley Development最新文献

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Failure mechanism and vibration control for tower tube of wind generator under extreme climate 极端气候条件下风力发电机塔筒失效机理及振动控制
Indian Journal of Power and River Valley Development Pub Date : 2022-01-21 DOI: 10.18311/ijprvd/2021/29370
Yang Mingliyang, Wang Jisheng, Meng Wenjun, Wang Shoucheng
{"title":"Failure mechanism and vibration control for tower tube of wind generator under extreme climate","authors":"Yang Mingliyang, Wang Jisheng, Meng Wenjun, Wang Shoucheng","doi":"10.18311/ijprvd/2021/29370","DOIUrl":"https://doi.org/10.18311/ijprvd/2021/29370","url":null,"abstract":"The wind power tower is sensitive to wind loads with high aspect ratio. The failure characteristics and failure mechanism of the wind turbine tower structure are analyzed under the extreme climate conditions. Based on the principle of tuned mass damper theory, the suspension damper application in wind turbine tower structure is designed. The appropriate typhoon wind speed spectrum is selected. With the finite element software, the 3D model for tower structure is established and the control effect of the damper structure is analyzed. The maximum displacement and acceleration of the structure under extreme climatic conditions are greatly reduced after the suspension tuned mass damper being given. The efficiency of vibration reduction is 80.26% and 54% respectively. The results show that the response of displacement and acceleration for the damper are obviously decreased, which is beneficial to the safety of the tower structure under the extreme climate condition.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134158936","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
Experimental and computational fluid dynamics simulation of performance analysis of steam generators of boilers 锅炉蒸汽发生器性能分析的实验与计算流体力学模拟
Indian Journal of Power and River Valley Development Pub Date : 2022-01-21 DOI: 10.18311/ijprvd/2021/29369
Praveen Math
{"title":"Experimental and computational fluid dynamics simulation of performance analysis of steam generators of boilers","authors":"Praveen Math","doi":"10.18311/ijprvd/2021/29369","DOIUrl":"https://doi.org/10.18311/ijprvd/2021/29369","url":null,"abstract":"Poor air temperature in modern power plants is one of the main reasons for the increase in unit temperature and the deterioration of boiler performance. The main problem of the air preheater is the leakage of air on the side of the gas flue and thus lead to improper thermal performance. Thehigh ash content in Indian coal also adds to the problems associated with air tube heating. Air preheaters are designed to meet the operational requirements with consideration of the most impact parameters. heat transfer, leakage and pressure reduction. In the current work the performance of the air-conditioning heater is being tested with the help of the computational fluid dynamics (CFD)Fluent 14.0 analysis tool.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115122934","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
How will micro-grids sustain the renewable energy systems of the future 微电网将如何维持未来的可再生能源系统
Indian Journal of Power and River Valley Development Pub Date : 2022-01-21 DOI: 10.18311/ijprvd/2021/29367
Jayanth Bhattacharya
{"title":"How will micro-grids sustain the renewable energy systems of the future","authors":"Jayanth Bhattacharya","doi":"10.18311/ijprvd/2021/29367","DOIUrl":"https://doi.org/10.18311/ijprvd/2021/29367","url":null,"abstract":"NO ABSTRACT","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"2431 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130847794","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
Research on a novel passive islanding detection method 一种新型被动孤岛检测方法的研究
Indian Journal of Power and River Valley Development Pub Date : 2021-07-02 DOI: 10.18311/IJPRVD/2021/28068
Dong Xie, Dajin Zang, Peng Gao, Jun-Jia Wang, Zhu Zhu
{"title":"Research on a novel passive islanding detection method","authors":"Dong Xie, Dajin Zang, Peng Gao, Jun-Jia Wang, Zhu Zhu","doi":"10.18311/IJPRVD/2021/28068","DOIUrl":"https://doi.org/10.18311/IJPRVD/2021/28068","url":null,"abstract":"In distributed generation systems, islanding detection is a necessary function of grid-connected inverters. In view of the performance disadvantages of traditional passive and active islanding detection methods, this paper proposes a novel passive islanding detection method. The proposed method first extracts characteristic parameters from the inverter output voltage signal and inverter output current signal through lifting wavelet transform, and then conducts the pattern recognition of these extracted characteristic parameters via BP neural network, so as to judge if there is an islanding phenomenon. As verified by the simulation and experiment results, the islanding detection method proposed in this paper is effective, and is featured by high detection speed and small non-detection zone, without affecting electric energy quality; its detection performance has been remarkably improved in comparison with that of traditional islanding detection methods.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124473285","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
The mind of a hybrid car buyer 混合动力汽车买家的想法
Indian Journal of Power and River Valley Development Pub Date : 2021-07-02 DOI: 10.18311/IJPRVD/2021/28065
Jayanta Bhattacharya
{"title":"The mind of a hybrid car buyer","authors":"Jayanta Bhattacharya","doi":"10.18311/IJPRVD/2021/28065","DOIUrl":"https://doi.org/10.18311/IJPRVD/2021/28065","url":null,"abstract":"No Abstarct.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124206553","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
Investigation of repeated economiser tube failures of a 135 tph cold cyclone CFB boiler – a case study 135tph冷旋流循环流化床锅炉省煤器管反复失效的研究——以实例为例
Indian Journal of Power and River Valley Development Pub Date : 2021-07-02 DOI: 10.18311/IJPRVD/2021/28066
Chittatosh Bhattacharya
{"title":"Investigation of repeated economiser tube failures of a 135 tph cold cyclone CFB boiler – a case study","authors":"Chittatosh Bhattacharya","doi":"10.18311/IJPRVD/2021/28066","DOIUrl":"https://doi.org/10.18311/IJPRVD/2021/28066","url":null,"abstract":"There were quick and successive failures of economiser tubes in a four years old cold cyclone circulating fluidised bed 135 tph boiler in a short span of three months. Advance inspection and failure analysis, change in operational practices were used to get the boiler running at full load at the earliest possible time. This paper presents details of the process of inspection, maintenance, operation and failure investigation carried out for the economiser tubes of the boiler. The failure of the economiser tubes was due to external corrosion of the tubes furnace fire side due to presence of sulphur in coal, accompanied by localised erosion by high levels of alpha-quartz in coal ash.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115422995","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
Analysis of the earnings management methods of China’s electric power companies based on modified Jones model 基于修正Jones模型的中国电力公司盈余管理方法分析
Indian Journal of Power and River Valley Development Pub Date : 2021-07-02 DOI: 10.18311/IJPRVD/2021/28067
Zhibin Liu, Nian Xie, Xiaoning Li
{"title":"Analysis of the earnings management methods of China’s electric power companies based on modified Jones model","authors":"Zhibin Liu, Nian Xie, Xiaoning Li","doi":"10.18311/IJPRVD/2021/28067","DOIUrl":"https://doi.org/10.18311/IJPRVD/2021/28067","url":null,"abstract":"With the constant revision of accounting standards, the earnings management methods are constantly changed and innovated in order to achieve the purpose of beautifying the statements and manipulating profits. This paper took the electricity listed companies as the research object, selected the financial data of 52 listed companies in the Shanghai Stock Exchange and the Shenzhen Stock Exchange from 2014 to 2016 as the sample, and employed the SPSS statistics software to analyze the earnings management methods of the listed companies in the electric power industry and to draw the conclusions through empirical research. Based on the preliminary statistical analysis of the earnings management methods of listed companies in the electric power industry, this paper used the modified Jones model to verify the empirical analysis. The main conclusions of this paper are as follows: There is a positive linear relationship between fixed assets management, assets impairment management and discretional accruals of the listed companies in the electric power industry. The degree of its influence is more obvious and stable than that of other earnings management methods, and passed the significance test. The collinear diagnostics can also prove a more reasonable correlation among the variables, indicating that the results obtained from the modified Jones model is more significant.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125041601","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: 2
Energy-saving innovation for magnesite transport bed flash calcinations (TBFC) process 菱镁矿输送床闪烧(TBFC)工艺的节能创新
Indian Journal of Power and River Valley Development Pub Date : 2021-07-02 DOI: 10.18311/IJPRVD/2021/28064
J. Bhattacharya
{"title":"Energy-saving innovation for magnesite transport bed flash calcinations (TBFC) process","authors":"J. Bhattacharya","doi":"10.18311/IJPRVD/2021/28064","DOIUrl":"https://doi.org/10.18311/IJPRVD/2021/28064","url":null,"abstract":"No Abstract.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123396005","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
The survival codes of power industry in slowing economy 经济放缓下电力行业的生存法则
Indian Journal of Power and River Valley Development Pub Date : 2021-06-10 DOI: 10.18311/ijprvd/2020/27944
J. Bhattacharya
{"title":"The survival codes of power industry in slowing economy","authors":"J. Bhattacharya","doi":"10.18311/ijprvd/2020/27944","DOIUrl":"https://doi.org/10.18311/ijprvd/2020/27944","url":null,"abstract":"No Abstract.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127633881","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
Greening and biodiversity protection in the power sector: benefits outweigh cost 电力行业的绿化和生物多样性保护:收益大于成本
Indian Journal of Power and River Valley Development Pub Date : 2021-06-10 DOI: 10.18311/ijprvd/2020/27942
J. Bhattacharya
{"title":"Greening and biodiversity protection in the power sector: benefits outweigh cost","authors":"J. Bhattacharya","doi":"10.18311/ijprvd/2020/27942","DOIUrl":"https://doi.org/10.18311/ijprvd/2020/27942","url":null,"abstract":"No Abstract.","PeriodicalId":226140,"journal":{"name":"Indian Journal of Power and River Valley Development","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132240065","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
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