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Cascading Failure Analysis With Load Uncertainty in Cyber-Physical Power Systems 网络-物理电力系统负荷不确定的级联故障分析
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697552
Xingle Gao, Min-fang Peng, Runfu Zhou, Yongan Deng
{"title":"Cascading Failure Analysis With Load Uncertainty in Cyber-Physical Power Systems","authors":"Xingle Gao, Min-fang Peng, Runfu Zhou, Yongan Deng","doi":"10.1109/POWERCON53785.2021.9697552","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697552","url":null,"abstract":"This paper propose a novel model to analyze the effects of load uncertainty on the cascading failure of cyber-physical power systems. In this model, we take into account the interdependence of network nodes, cascade overload and voltage violation in the cascading process. Moreover, the AC power flow model is incorporated with the unscented transformation (UT) method to simulate the power flow distribution under the influence of load uncertainty. Based on the actual load data, the autoregressive integrated moving average (ARIMA) technique is adopted to model the load uncertainty. The results show that the load uncertainty aggravates the cascading failure propagation of coupled power systems, and the high uncertainty of heavy load nodes is more likely to cause large-scale blackouts. In addition, compared with small-world cyber network, scale-free cyber network can make the coupled system more robust and reduce the severity of blackouts.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130682391","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
The Preliminary Conception of Access Protection for Distributed Generation Based on the Internet Communication Technology 基于互联网通信技术的分布式发电接入保护的初步构想
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697887
Ji Xu, Jianmin Zhang, Naizheng Jin, Kangyi Li, Caiming Yang, Hang Mu
{"title":"The Preliminary Conception of Access Protection for Distributed Generation Based on the Internet Communication Technology","authors":"Ji Xu, Jianmin Zhang, Naizheng Jin, Kangyi Li, Caiming Yang, Hang Mu","doi":"10.1109/POWERCON53785.2021.9697887","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697887","url":null,"abstract":"To approach the national strategy about the \"3060\" dual-carbon, increasingly distributed power sources need to be connected to the distribution side. Because of the access of the distributed power grid, the original closed environment of the isolation protection in the power system has been broken. However, the current research is focused on the general protection technology in the traditional power grids. The protection technology of power systems is facing a difficult situation. On the one side, the system environment assumes keeps isolation and a close loop. The system will not be able to fully absorb the power from the distribution grids. On the other side, the system will suffer network attack risks because it accesses the internet communication with distributed power grids. The environment of communication is open and no strict security measurement. Therefore, this paper proposed the preliminary concept of the distributed power grid. Firstly, the characteristics and security loopholes of the distributed power grids control system based on internet communication are analyzed. Then, the characteristics and defects of the security protection technology based on Internet technology are analyzed. Finally, the preliminary conception of the protection scheme is proposed.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123674042","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
Joint location planning of distribution network and sensitive users considering the influence of voltage sag 考虑电压暂降影响的配电网与敏感用户联合选址规划
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697816
Peng Zhang, L. Pan, Bing Shen, Yingjie Tian
{"title":"Joint location planning of distribution network and sensitive users considering the influence of voltage sag","authors":"Peng Zhang, L. Pan, Bing Shen, Yingjie Tian","doi":"10.1109/POWERCON53785.2021.9697816","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697816","url":null,"abstract":"With the development of distribution network and a large number of sensitive loads on the user side, it is an inevitable trend to consider the impact of voltage sag in the power grid planning stage. Aiming at the problem that the current voltage sag treatment is less considered from the power grid side, a joint planning model of distribution network frame and sensitive user location considering the impact of voltage sag is proposed. The model is solved based on BPSO (binary particle swarm optimization) algorithm, and the final planning result is obtained by TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution). A 25 node distribution network planning network is used as an example to verify the effectiveness of the model.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121206562","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 Commercial Model of Park-level Integrated Energy System Participating in Carbon Trading Considering Electric Vehicles 考虑电动汽车的园区级综合能源系统参与碳交易商业模式分析
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697560
Lei Huang, Xiaoyan Zhang, Xiucai Ding, Chuangxin Guo
{"title":"Analysis of Commercial Model of Park-level Integrated Energy System Participating in Carbon Trading Considering Electric Vehicles","authors":"Lei Huang, Xiaoyan Zhang, Xiucai Ding, Chuangxin Guo","doi":"10.1109/POWERCON53785.2021.9697560","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697560","url":null,"abstract":"In the context of low-carbon development of power systems, the integrated energy system and carbon trading are two effective measures to reduce carbon emissions. In this paper, the commercial model of the park-level integrated energy system(PIES) with demand response and electric vehicles(EVs) is established and its energy supply mode is analyzed. Besides, in the case of considering carbon trading, we study the carbon trading cost of PIES as well as the commercial model of PIEs participating in carbon trading through carbon quotas and government certified emission reduction (CCER). Finally, the influence of demand response and participation of EVs on the PIES’s revenue and cost under different carbon trading prices are analyzed by numerical examples, as well as the internal rate of return (IRR) and payback period(PP) of the invested charging pile, which illustrate the advantage and rationality of the proposed commercial model.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124081223","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
A hybrid HVDC converter based on MMC and diode rectifier for offshore wind farm integration 海上风电场集成中基于MMC和二极管整流器的混合直流变流器
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697478
Yue Wu, Lei Zhang, Yuebin Zhou, Zongqiu Hu, Xiaobin Zhao, Qinghan Zhuang
{"title":"A hybrid HVDC converter based on MMC and diode rectifier for offshore wind farm integration","authors":"Yue Wu, Lei Zhang, Yuebin Zhou, Zongqiu Hu, Xiaobin Zhao, Qinghan Zhuang","doi":"10.1109/POWERCON53785.2021.9697478","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697478","url":null,"abstract":"Aiming at the occasion of DC transmission of offshore wind power, a new type of hybrid converter topology is proposed in which a diode rectifier is connected in parallel with the AC side of the MMC converter and the DC side is connected in series. MMC converter provides a stable voltage source for offshore wind farms and serves as power of black start. The DC side of the diode rectifier has a bypass circuit breaker and a thyristor as the starting circuit. Due to the application of diode rectifier with higher integration and MMC converter with lower DC operating voltage in this topology, this HVDC transmission system has a higher power density and lower cost, and has some certain utilities. This paper analyzes the principle of the hybrid converter, the power distribution ratio, and the start-up and steady-state control methods. Finally, the PSCAD/EMTDC simulations for the HVDC transmission system are conducted to validate the proposed hybrid converter and control strategy.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126327289","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
A Network Restoration Model for Active Distribution Network with Coordinated Active and Reactive Power 有功与无功协调配电网的网络恢复模型
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697490
Yuhan Hou, Han Wu, Ankang Miao, Zhenjie Li, Yue Yuan
{"title":"A Network Restoration Model for Active Distribution Network with Coordinated Active and Reactive Power","authors":"Yuhan Hou, Han Wu, Ankang Miao, Zhenjie Li, Yue Yuan","doi":"10.1109/POWERCON53785.2021.9697490","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697490","url":null,"abstract":"Reactive power is indispensable in power system operation in supporting bus voltage and meeting load demands. Therefore, a novel network restoration model is proposed in this paper for active distribution networks (ADN) with coordinated active and reactive power to restore more load after disaster-induced power blackout. This model considers the dispatch of ESS, network topology, active and reactive power of distributed generation (DG) resources, and static var compensators (SVCs) in the network restoration progress. While the linearized Distflow model is utilized to describe the power flow. The whole network restoration more is programmed using mixed-integer linear programming (MILP) to obtain a balance between computational efficiency and accuracy. The proposed active and reactive power model coordinated network restoration is demonstrated on the IEEE 33 bus testing system.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126207936","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
Wavelet time-frequency diagram and convolutional neural network-based fault diagnosis of commutation failure in HVDC transmission system 基于小波时频图和卷积神经网络的直流输电系统换相故障诊断
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697628
Liu Kai, Zhang Bide, Chen Zhao, Liang Chengjian, Peng Ping, Feng Jing
{"title":"Wavelet time-frequency diagram and convolutional neural network-based fault diagnosis of commutation failure in HVDC transmission system","authors":"Liu Kai, Zhang Bide, Chen Zhao, Liang Chengjian, Peng Ping, Feng Jing","doi":"10.1109/POWERCON53785.2021.9697628","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697628","url":null,"abstract":"Commutation failure is the most typical system failure of HVDC transmission system. Serious commutation failure will lead to subsequent continuous commutation failure, which will cause greater harm to the safe operation of power system. For the purpose of realizing the effective identification of the type about single commutation failure and continuous commutation failure in the HVDC transmission system, a new fault diagnosis method based on wavelet time-frequency diagram and convolutional neural network is proposed. Firstly, the collected inverter-side DC voltage and current original fault signals are continuously wavelet transformed to generate wavelet time-frequency diagrams as fault feature inputs; secondly, a convolutional neural network structure with dual softmax classifiers is proposed to realize the parallel judgment of six commutation failure fault types and single or continuous commutation failure problems. Finally, the CIGRE DC transmission standard test model is used for fault simulation test, and the results show that the method can identify the fault cause of single commutation failure and continuous commutation failure in HVDC systems.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128008096","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 Integrated Energy Management System Based on Microservice Architecture 基于微服务架构的综合能源管理系统研究
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697774
Xinying Wang, Ye Li, Chunfei Wang, Haodong Lin, Mengting Li
{"title":"Research on Integrated Energy Management System Based on Microservice Architecture","authors":"Xinying Wang, Ye Li, Chunfei Wang, Haodong Lin, Mengting Li","doi":"10.1109/POWERCON53785.2021.9697774","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697774","url":null,"abstract":"The integrated energy management system is the key to realize the multi-source coordinated operation of the integrated energy system. The microservice architecture is naturally consistent with the multi-integration characteristics of the integrated energy system, and has the characteristics of loose coupling, which can effectively integrate the functions of the traditional energy system and support the free combination of different computing functions. Therefore, it is necessary to develop integrated energy management system based on microservice architecture, to form an integrated energy dispatching and control platform with high flexibility and compatibility, to integrate the functions of traditional energy system, to support flexible access of new functions, and to meet the demands of energy Internet operation optimization.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125747427","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
Optimization Design and Experimental Analysis of High-voltage High-frequency Transformer with Completely Resin Casting 全树脂铸造高压高频变压器的优化设计与试验分析
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697629
Yang Jin, Guangyao Qiao, Zhanfeng Deng, Guoliang Zhao, Haijun Liu, Zhe Cheng
{"title":"Optimization Design and Experimental Analysis of High-voltage High-frequency Transformer with Completely Resin Casting","authors":"Yang Jin, Guangyao Qiao, Zhanfeng Deng, Guoliang Zhao, Haijun Liu, Zhe Cheng","doi":"10.1109/POWERCON53785.2021.9697629","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697629","url":null,"abstract":"Compared with traditional transformer, high-frequency transformer (HFT) exhibits good features such as high power density, small volume and weight, etc. This paper presents the application of an optimization design methodology which intended for HFT applications. First, a optimization design methodology is introduced, where the efficiency, volume, power density, leakage inductance and losses are taken into account. Then, in order to reduce the temperature of the HFT, a heat dissipation method is proposed. By adding a hollow pipe containing thermal conductive materials into the HFT internal structure, the hot spot temperature of core and secondary winding can be reduced effectively. Final, 10kHz/200kVA HFT prototype is built and the test results are reported.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122261044","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
Abnormal Data Processing of Wind Turbine Based on Combined Algorithm and Class Center Imputation 基于组合算法和类中心插补的风电机组异常数据处理
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697679
Qiang Zhou, Yanhong Ma, Qingquan Lv, Ruixiao Zhang, Wen Wang, Shiyou Yang
{"title":"Abnormal Data Processing of Wind Turbine Based on Combined Algorithm and Class Center Imputation","authors":"Qiang Zhou, Yanhong Ma, Qingquan Lv, Ruixiao Zhang, Wen Wang, Shiyou Yang","doi":"10.1109/POWERCON53785.2021.9697679","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697679","url":null,"abstract":"High precision wind power curve is essential to wind power predictions. In order to eliminate a host of abnormal data of a wind turbine, the abnormal data is divided into decentralized data or abandoned data, and the wind speed into low wind speed and high wind speed ranges in this paper. An algorithm based on the combination of the quartile and clustering is proposed to clean the abnormal data of the two types of the wind speed ranges respectively. Moreover, in view of the elimination of a wealth of missing data, the interpolation method based on class center is employed. The numerical results on cleaning and reconstruction of turbine data in a prototype wind farm have positively confirmed the performances of the proposed algorithm.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122276032","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
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