DEStech Transactions on Environment, Energy and Earth Science最新文献_第6页

Analysis of Combined FM Application in Thermal Power Plant of Energy Storage System 组合调频在火电厂储能系统中的应用分析

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35469

Zhongyang Wang, Yunpeng Diao, L. Jia, Jiang Weiwei, Zhou Chi, Ruicai Si, Liu Xiwen

引用次数: 0

Research on Bearing Intelligent Diagnostic Technology Based on EMD and GA-BP 基于EMD和GA-BP的轴承智能诊断技术研究

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35484

Xing Zhikai, Qiang Wang, Yongbao Liu, Y. Guo, Jia Yan, Lihuan Mo, Jun Li

引用次数: 0

Research on Influencing Factors of Heat Transfer Performance of Vertical Single U-Tube for Ground Source Heat Pump 地源热泵垂直单u型管换热性能影响因素研究

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35505

Y. Liu, P. Chen, Jun Wang, Guofeng Xu

{"title":"Research on Influencing Factors of Heat Transfer Performance of Vertical Single U-Tube for Ground Source Heat Pump","authors":"Y. Liu, P. Chen, Jun Wang, Guofeng Xu","doi":"10.12783/DTEEES/PEEES2020/35505","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35505","url":null,"abstract":"The heat transfer performance of the buried heat exchanger is a key factor affecting the efficiency of the ground source heat pump. In this paper, the heat transfer model of the vertical single U-type heat exchanger is first established under the condition of variable heat flow to make it closer to the actual operating conditions, for simplicity The calculation process and the calculation time are saved. The boundary element method is used to analyze the heat resistance of the buried heat exchanger, and then the numerical simulation software is compiled to simulate the heat transfer performance of the buried heat exchanger. The results of the study show that the soil temperature changes within a range of 1.5m from the buried tube heat exchanger. The hole spacing of the buried tube heat exchanger cannot be less than 4m in practical applications; when the soil thermal conductivity increases by 25%, The heat transfer per unit depth of the buried tube heat exchanger increases by 14.8%; When the diameter of the drill hole is increased from 160mm to 300mm, the heat transfer per unit depth of the hole increases by 8.2%.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83340480","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 Problems in Application of "Mine Ventilation" Project Teaching 《矿井通风》项目教学应用中存在的问题分析

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35498

Lianghui Guo, Wenting Jia

引用次数: 0

Research on Coreference Resolution Based on Conditional Random Fields 基于条件随机场的共参考分辨率研究

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35461

Yujie Miao, Xueqiang Lv, Le Zhang

引用次数: 0

Research and Application of a New Electric Coupling Device 一种新型电耦合装置的研究与应用

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35504

Wang Yongdao, Guang Yang, He Jie, Li Chuanqiu, Kan Luo

引用次数: 0

Quality Control of Marine Big Data for Marine Physical Property Monitoring System 海洋物性监测系统的海洋大数据质量控制

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35464

Chun-li Chen, Jie Zhou, L. Xiong, Pei-Qiong Zhao, Fan Qi, Xiao-feng Li, Xin-Rou Li, Yong Chen

{"title":"Quality Control of Marine Big Data for Marine Physical Property Monitoring System","authors":"Chun-li Chen, Jie Zhou, L. Xiong, Pei-Qiong Zhao, Fan Qi, Xiao-feng Li, Xin-Rou Li, Yong Chen","doi":"10.12783/DTEEES/PEEES2020/35464","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35464","url":null,"abstract":"To make good use of the ocean, we must know enough about it. Supported by the Ministry of science and technology of China, the marine physical parameters monitor is developed to obtain real-time marine physical parameters such as temperature, humidity, pressure, rainfall, wind speed, wind direction, solar radiation, water depth, salinity, conductivity and other data. The integrated intelligent service software platform for marine physical property monitoring data is used for real-time collection, storage, historical data analysis, integrated display and other work of these data. As a part of the integrated intelligent service software platform, an improved big data quality control method which comprehensively uses the meteorological industry standards test, least square polynomial fitting, multiple regression and other technologies is proposed in this paper to improve the correct and efficient use of these real-time or historical data in terms of data inspection, correction, reconstruction and quality evaluation, etc. The existing historical data prove the effectiveness of this method.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"17 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76050699","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 of Harmonic Index and Testing Method Based on Virtual Instrument 基于虚拟仪器的谐波指标及测试方法研究

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35507

Ying Hui Cao, Xiufen Xu, Yongqiang Hou, Hongfei Li

{"title":"Research of Harmonic Index and Testing Method Based on Virtual Instrument","authors":"Ying Hui Cao, Xiufen Xu, Yongqiang Hou, Hongfei Li","doi":"10.12783/DTEEES/PEEES2020/35507","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35507","url":null,"abstract":"In view of the practical problems such as the imperfect harmonic testing and evaluation methods of the variable frequency speed regulation system and the high operating cost, a harmonic evaluation index system including 9 indexes is established, and the calculation method of each index is clarified. At the same time, the harmonic testing and analysis method of the variable frequency speed regulation system based on virtual instruments is proposed. The Labview software platform is combined with an external data acquisition module to replace the traditional testing instruments for harmonic testing and signal acquisition, processing and analysis. On the basis of theoretical research, an experimental platform was built to conduct verification experiments, and then the application experiments of 2 working conditions were carried out. The results shows that the test method was correct and feasible. Based on the experimental results, further analysis of the impact of harmonics on the performance of the variable frequency speed control system, and the corresponding law of influence will be obtained, which will provide guidance for the subsequent development of harmonic prevention and other related work.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87853554","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

Coordinated Control of Independent Microgrid Based on SOC Deviation Rate 基于SOC偏差率的独立微电网协调控制

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35512

Liu Keke, He Guoqing, Wang Weisheng, Li Guanghui, Sun Yanxia, Junhua Ma, Gao Liping, Zhang Xing, C. Gao, Yong Zhang, Qi Zhang

{"title":"Coordinated Control of Independent Microgrid Based on SOC Deviation Rate","authors":"Liu Keke, He Guoqing, Wang Weisheng, Li Guanghui, Sun Yanxia, Junhua Ma, Gao Liping, Zhang Xing, C. Gao, Yong Zhang, Qi Zhang","doi":"10.12783/DTEEES/PEEES2020/35512","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35512","url":null,"abstract":"System failure due to high failure rate of independent microgrid energy management system (EMS) in high altitude and cold area, considering the difference in charge state (SOC) between multiple energy storage devices in the system, a power coordinated control strategy based on the SOC deviation rate of energy storage devices is proposed, adjust the output power of the energy storage converter according to the difference in SOC of each energy storage device, reduce the difference in SOC of each energy storage device, after the system EMS fails, the operation status of the energy storage equipment is consistent to ensure the normal operation of the system. The RT-LAB simulation platform is used to establish a simulation model and design a digital control system. The control system can quickly carry out power coordination control according to the SOC state of energy storage devices, so it makes the devices output power differently according to the SOC level, reduces the SOC difference of energy storage devices, makes the devices SOC reach the same, and verifies the feasibility and effectiveness of the coordination control strategy.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"31 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89085925","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

A Transmission System Planning Method Considering Combined Operation of Wind Farms and Energy Storage Systems 考虑风电场与储能系统联合运行的输电系统规划方法

DEStech Transactions on Environment, Energy and Earth Science Pub Date : 2021-03-20 DOI: 10.12783/DTEEES/PEEES2020/35472

Sun Bo, Liu Xunyuan, Jubin Yan, Songtao Li, Yuxuan Yang, Xiaoming Wang

引用次数: 0