2020 IEEE Sustainable Power and Energy Conference (iSPEC)最新文献

A Synchrophasor Estimation of Power Systems Considering Three-phase Amplitude Imbalance 考虑三相幅值不平衡的电力系统同步相量估计

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351212

Xinchuang Liu, L. Fu, Hongjun Zhao, Siyu Xiong, Ling Yu, Xuan-zheng Zhou

{"title":"A Synchrophasor Estimation of Power Systems Considering Three-phase Amplitude Imbalance","authors":"Xinchuang Liu, L. Fu, Hongjun Zhao, Siyu Xiong, Ling Yu, Xuan-zheng Zhou","doi":"10.1109/iSPEC50848.2020.9351212","DOIUrl":"https://doi.org/10.1109/iSPEC50848.2020.9351212","url":null,"abstract":"When the distribution network occurs fault or the three-phase load is unbalanced, the measurement accuracy of the phasor measurement unit (PMU) will decrease due to the influence of the unbalanced current/voltage signal. Accordingly, a synchrophasor measurement algorithm considering three-phase amplitude imbalance is proposed to improve the estimation accuracy under three-phase amplitude imbalance. Firstly, the discrete Fourier transform (DFT) is used to identify the amplitude imbalance phase and pre-estimate the amplitude imbalance coefficient. Then, by expanding the Taylor model and combining the mathematical transformation, the Negative-Twice-Frequency Component (NTFC) generated by DFT is eliminated. Finally, an accurate phasor measurement result is obtained through offline matrix calls and error correction steps; The signals defined by IEEE Standard C37.242-2013 are adopted to verify the performance of proposed algorithm. The simulations show that the proposed algorithm is valid under three-phase amplitude imbalance, and the measurement fluctuation is significantly reduced with a reasonable increment in computational burden.","PeriodicalId":403879,"journal":{"name":"2020 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"10 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115469589","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

Block-chain based Energy Tracing Method for Electric Vehicles Charging 基于区块链的电动汽车充电能量追踪方法

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9350999

Ye Yang, Daiwen Peng, Wen Wang, Xiaoqing Zhang

引用次数: 4

A Hybrid Optimization Method for Distribution System Expansion Planning with Lithium-ion Battery Energy Storage Systems 锂离子电池储能配电网扩容规划的混合优化方法

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351208

Andrej Trpovski, Prabal Banerjee, Yan Xu, T. Hamacher

{"title":"A Hybrid Optimization Method for Distribution System Expansion Planning with Lithium-ion Battery Energy Storage Systems","authors":"Andrej Trpovski, Prabal Banerjee, Yan Xu, T. Hamacher","doi":"10.1109/iSPEC50848.2020.9351208","DOIUrl":"https://doi.org/10.1109/iSPEC50848.2020.9351208","url":null,"abstract":"The accelerating trend of mobility electrification and the constantly increasing accessibility of distributed energy resources (DERs) play an important role in the changing landscape of the modern power system. To maintain the reliability and continuity of supply under the newly encountered EV charging demand, it is a necessity for the planning engineers to use economically viable planning strategies. Traditionally, the expansion of the distribution system, is accomplished using additional lines, cables, transformers, switchgear, or substations. Modern expansion planning is further advanced to consider widespread use of centralized and/or distributed energy storage systems due to their cost competitiveness. In this paper, a robust distribution system expansion planning approach for a combined installation of new lines and energy storage systems is proposed. A hybrid optimization method using a meta-heuristic Genetic Algorithm (GA) and a mixed integer quadratically constrained program (MIQCP) is defined. The solution encompasses a cost-effective line expansion strategy combined with the placement of new energy storage systems and their optimal sizing. The proposed model is tested on a modified 45 bus case study of a Singaporean synthetic grid model. The results are shown and analyzed to conclude the benefits of using energy storage systems as an additional strategy in the expansion planning approach.","PeriodicalId":403879,"journal":{"name":"2020 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120904622","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

Study on the Accommodation Ability and Development Demand with High Proportion Renewable Energy Integrated into Grid in China 中国高比例可再生能源并网容纳能力及发展需求研究

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351020

Zhang Yajie, Chen Ziwei, Zhaohui Qiang, Zhang Yuqiong

引用次数: 0

Analysis of Frequent Tube Burst of High Temperature Reheater in 600 MW Unit 600mw机组高温再热器爆管频发原因分析

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351120

K. Sun, Jia’an Wang, Yu Yan, Jiahao Jiang, L. Deng, D. Che

引用次数: 1

Small Magnitude PMU Bad Data Detection Based on Data Mining Technology 基于数据挖掘技术的PMU小量级不良数据检测

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351297

Hongjun Zhao, L. Fu, Xinchuang Liu, Siyu Xiong, Kailing Cao, Junxiong Wang

引用次数: 1

Comparison of Low Frequency Oscillation Characteristic Differences between VSG and SG VSG与SG低频振荡特性差异的比较

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351203

Hongpeng Zhang, Dan Li, Hui Liu, Dawei Sun, Yanchen Yang, Yinchi Shao, Yamin Sun

引用次数: 0

Temperature Recognition for Normal Temperature Metal Based on The Statistical Features of Visible Image and K-nearest Neighbor Algorithm 基于可见光图像统计特征和k近邻算法的常温金属温度识别

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351176

Yunjun Pei, Wenmao Li, Qiaoyun Xu, Xi Yang, Zhe Yuan, Qizheng Ye

{"title":"Temperature Recognition for Normal Temperature Metal Based on The Statistical Features of Visible Image and K-nearest Neighbor Algorithm","authors":"Yunjun Pei, Wenmao Li, Qiaoyun Xu, Xi Yang, Zhe Yuan, Qizheng Ye","doi":"10.1109/iSPEC50848.2020.9351176","DOIUrl":"https://doi.org/10.1109/iSPEC50848.2020.9351176","url":null,"abstract":"The temperature status monitoring of power equipment is very important to ensure the safe operation of the power grid, and the fault temperature is generally in the normal temperature range. Under normal temperature conditions, the magnitude of the thermal radiation intensity in the visible waveband is small and changes slightly with temperature. Therefore, infrared detection is generally used to detect temperature. In this paper, the chromaticity information of visible images of the copper plate and aluminum plate caused by normal temperature changes is studied. First, establish image libraries of copper plate and aluminum plate at 10°C-100°C, extract the chromaticity gray values of the R, G, and B components of the images at different temperatures, and calculate the frequencies of each gray level to obtain the gray frequency distribution of each component. Then, the change law of the gray frequency distribution curve with temperature is analyzed qualitatively, and the statistical features of the gray frequency distribution of each component are calculated. Some of features are selected by the Fisher criterion. Finally, the k-Nearest Neighbor (KNN) algorithm is used for temperature recognition whose input features is a combination of the selected features. The results show that the average test error of the KNN temperature prediction model is within 1°C, which achieves a good prediction effect, and the dimension of the input feature can influence the prediction effect. The above results provide a new technical route for detecting normal temperature using visible image information.","PeriodicalId":403879,"journal":{"name":"2020 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126137267","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 Fault Diagnosis Method of Active Distribution Network Based on Fault Search Table and Data Mining Technology 基于故障搜索表和数据挖掘技术的有源配电网故障诊断方法

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9350932

Binglei Xue, Qing Chen, Wudi Huang

{"title":"A Fault Diagnosis Method of Active Distribution Network Based on Fault Search Table and Data Mining Technology","authors":"Binglei Xue, Qing Chen, Wudi Huang","doi":"10.1109/iSPEC50848.2020.9350932","DOIUrl":"https://doi.org/10.1109/iSPEC50848.2020.9350932","url":null,"abstract":"Centralized feeder automation has high flexibility and adaptability and is suitable for various distribution system. In this paper, the fault search table is established based on fault information, then we use Aprion data mining technology to analyze the fault search table to locate the fault. This location method can be applied to centralized feeder automation. At the same time, considering the misjudgement caused by lost information and distorted information at special locations, combined with this method and the result of secondary positioning, a method which can accurately relocate and close the wrong actuating switch is designed to reduce the blackout range. Finally, by comparing the suspicious failure set and its elements, the lost information and distorted information in the system can be found. The fault diagnosis method has the advantages of simple principle and high expandability. It can quickly and automatically obtain a malfunction report when a fault occurs, and has relatively high fault tolerance. This is helpful for the development of centralized feeder automation and the development of self-healing power grid.","PeriodicalId":403879,"journal":{"name":"2020 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123290078","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

CFD Modeling of Hydrodynamics in Circulating Fluid Bed 循环流化床流体力学的CFD建模

2020 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2020-11-23 DOI: 10.1109/iSPEC50848.2020.9351267

Li Peng, Fang Dong, Zhansheng Shi, Zhian Ma, Xuye Jing, Bo Xu

引用次数: 0