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2021 International Conference on Power System Technology (POWERCON)最新文献

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Deviation Reduction of On-line and Off-line Computational Results of Short Circuit Ratio for Multiple Renewable Power Sources 多可再生电源短路比在线与离线计算结果的偏差减小
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697464
X. Chen, Yazhou Luo, Lei Zhang, Weitao Zhang, Shujun Wang, Shitong Li
{"title":"Deviation Reduction of On-line and Off-line Computational Results of Short Circuit Ratio for Multiple Renewable Power Sources","authors":"X. Chen, Yazhou Luo, Lei Zhang, Weitao Zhang, Shujun Wang, Shitong Li","doi":"10.1109/POWERCON53785.2021.9697464","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697464","url":null,"abstract":"This paper examines the numerical characteristics of short circuit ratio for multiple renewable power sources (MRSCR) and reveals the causes of deviation between on-line and off-line computational results of MRSCR. It is found that model and parameter inconformity of on-line and off-line computational programs is the main factor leading to the deviation. In addition, difference of steady-state voltage of point of common coupling (PCC) of renewable power sources (RESs) also contributes to the deviation, yet the deviation is reasonable and can be compensated. On-line computational results of MRSCR are based on real-time power flow conditions and thus help improve the capability of power systems to accept renewable power. However, currently only off-line computational results are generally acknowledged as the certified reference in power system dispatching. Therefore, it is required that the deviation between on-line and off-line computational results has to be controlled to an acceptable level before on-line computation is officially put into service. In this paper, through model and parameter modification, the deviation of MRSCR in Ximeng Region between on-line and off-line computational program is reduced to a reasonable and acceptable level, effectively proving the reliability of on-line computational results and thus paving the way for the application of on-line computation of MRSCR in power system dispatching.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122067520","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
Short-term Load Forecasting Based on Multi-model Fusion of CNN-LSTM-LGBM 基于CNN-LSTM-LGBM多模型融合的短期负荷预测
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697619
Wei-dong Qian, Chunlei Gu, Chongxi Zhu, Zi-bin Jiang, Baohui Han, Miao Yu
{"title":"Short-term Load Forecasting Based on Multi-model Fusion of CNN-LSTM-LGBM","authors":"Wei-dong Qian, Chunlei Gu, Chongxi Zhu, Zi-bin Jiang, Baohui Han, Miao Yu","doi":"10.1109/POWERCON53785.2021.9697619","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697619","url":null,"abstract":"Inter-regional energy dispatch and regional peak cutting and valley filling require accurate load forecasting as support. In order to improve the forecasting accuracy, this paper proposes a multi-model fusion forecasting method based on CNN (convolutional neural network)-LSTM (long short-term memory)-LGBM (Light Gradient Boosting Machine) considering demand response. The CNN's ability is exploited to effectively extract local features, and LSTM’s ability to grasp time series information is used to build a serial CNN-LSTM model. Meanwhile, LGBM's regression analysis capabilities for nonlinear influencing factors is utilized to build an LGBM prediction model, and then an optimal combination method is used for model fusion. In addition, the impact of demand response, that is, electricity price factors, on regional loads is also considered. Through testing on the load data set, the results show that the fusion model has better load forecasting performance than individual model, and the MAPE (Mean Absolute Percentage Error) of the test set is 1.597%.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"429 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120879770","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: 3
Optimal generation bidding strategy for CHP units in deep peak regulation ancillary service market based on two-stage programming 基于两阶段规划的深度调峰辅助服务市场中热电联产机组最优发电报价策略
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697518
Jinming Chen, Xuanbin Huo, Bin Ye, Ying Le, W. Zhu, Kang-Yi Xu, Chao Guo, Xiaocong Sun
{"title":"Optimal generation bidding strategy for CHP units in deep peak regulation ancillary service market based on two-stage programming","authors":"Jinming Chen, Xuanbin Huo, Bin Ye, Ying Le, W. Zhu, Kang-Yi Xu, Chao Guo, Xiaocong Sun","doi":"10.1109/POWERCON53785.2021.9697518","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697518","url":null,"abstract":"With the deepening of China’s electricity market reform, the diversity of combined heat and power (CHP) units participating in the energy market has greatly increased. To maximize the profit of CHP units, an optimal generation bidding strategy for deep peak regulation ancillary service market is proposed. Firstly, the uncertainty of loads is modelled with the Latin hypercube sampling (LHS) method. Secondly, in order to obtain the period when CHP units obtain higher profits in deep peak regulation ancillary service market, the first stage dispatch model is established. Thirdly, queueing method is applied to clear the ancillary service market. Then the clearing amount and price of the market are used to determine the bidding capacities of CHP units in the market. Finally, the second stage dispatch model and algorithm are established to maximize the operating profit of the target units. The proposed model and techniques are validated through case study.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126165486","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
ADMM-Based Energy-Reserve Joint Dispatch Considering Cross-Zone Reserve Dispatchability 考虑跨区域储备可调度性的基于admm的能源储备联合调度
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697530
Shutong Pu, Xinfei Yan, Mengjun Shen, H. Zhong
{"title":"ADMM-Based Energy-Reserve Joint Dispatch Considering Cross-Zone Reserve Dispatchability","authors":"Shutong Pu, Xinfei Yan, Mengjun Shen, H. Zhong","doi":"10.1109/POWERCON53785.2021.9697530","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697530","url":null,"abstract":"As distributed energy resources (DERs) becomes widespread in power system, distributed algorithms are required for economic dispatch. Renewable generators accrue along with the randomness and volatility of the generation side, therefore higher proportion of reserves are applied in the system for stability concerns. Zonal-partitioned reserve dispatch is commonly considered in large-scale reserve dispatch cases. This paper gives solution to energy-reserve joint dispatch problems concerning reserve cross-zone dispatchability by modified ADMM algorithm. The precision and economic-effectiveness of the algorithm is validated through case studies based on IEEE 30-bus system.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129396469","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
Analysis of power abandon characteristics in Offshore Wind Farms with DC Series-Parallel Architectures 直流串并联结构海上风电场弃电特性分析
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697592
Yang Liu, Ling-ling Huang, Jingtao Yan, Qiguo Wang, Yuzhi Miao
{"title":"Analysis of power abandon characteristics in Offshore Wind Farms with DC Series-Parallel Architectures","authors":"Yang Liu, Ling-ling Huang, Jingtao Yan, Qiguo Wang, Yuzhi Miao","doi":"10.1109/POWERCON53785.2021.9697592","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697592","url":null,"abstract":"With the distance between offshore wind farms and coastline increasing, as one of the important alternatives of traditional AC wind farm, DC wind farm has broad development prospects. However, the DC series-parallel architecture will result in the power abandon, whose ultimate cause is that the operation states of wind turbines are different under different wind speeds. In order to analyze the correlation between wind speed characteristics and the power abandon in offshore wind farms with series-parallel architectures, a detailed analysis is presented in this paper. Moreover, the severity of power abandon is calculated through the case of a real wind farm, which will provide reference for the design and planning of offshore wind farms with series-parallel architectures in the future.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128415092","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
Rotor Design of HTS homopolar inductor alternator based on multi-physics field 基于多物理场的高温超导同极电感交流发电机转子设计
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697485
Shaopeng Wang, Aimei Tian, Wenjiang Yang, Dongbin Song, Mingliang Bai
{"title":"Rotor Design of HTS homopolar inductor alternator based on multi-physics field","authors":"Shaopeng Wang, Aimei Tian, Wenjiang Yang, Dongbin Song, Mingliang Bai","doi":"10.1109/POWERCON53785.2021.9697485","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697485","url":null,"abstract":"High temperature superconducting (HTS) machine has a broad application prospect in the airborne electric power system, because of its non-resistance, lightweight, and small size property. Especially when the homopolar inductor rotor was used in the HTS generator, it will also have a simple structure but high working speed which means powerful output capability. However, the design of HTS homopolar inductor alternator (HIA) rotor has to take multiple physics into consideration because of the complex working environment. The comprehensive but efficiency multi-physics predesign and multi-objective optimization of rotor parameters, which satisfies the limitation of electromagnetic output characteristics, magnetic distribution, strength, and rotor dynamics, are proposed. Finally, a prototype with the maximum output power of 30 kW is designed and manufactured, and the no-load experiment confirms the theoretical design. Meanwhile, the saturation issue is highlighted in the experimentation which will become increasingly obvious in the future miniaturization of HTS HIA.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128484730","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
Grounding Fault Line Selection Data Model for Distribution Network Based on Random Forest Algorithm 基于随机森林算法的配电网接地故障选线数据模型
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697566
Peng Heping, Luan Le, Wang Yong, Mo Wenxiong, Xu Zhong
{"title":"Grounding Fault Line Selection Data Model for Distribution Network Based on Random Forest Algorithm","authors":"Peng Heping, Luan Le, Wang Yong, Mo Wenxiong, Xu Zhong","doi":"10.1109/POWERCON53785.2021.9697566","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697566","url":null,"abstract":"Aiming at the problem of fault line selection when arc grounding occurs in distribution network, a method based on random forest algorithm is proposed. This method uses wavelet packet analysis to extract the characteristic information of fault zero sequence current signal, uses kernel principal component analysis to reduce the complexity of sample data, and uses random forest algorithm to train fault line selector suitable for single-phase arc grounding fault in distribution network. Simulation results show that the random forest fault line selector can effectively select the feeder with single-phase arc grounding fault. The scheme has practical significance in fault line selection of single-phase arc grounding in distribution network.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128695344","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
Voltage Feed Forward Shunt Active Power Filter Based On Double Loop Control 基于双环控制的电压前馈并联有源电力滤波器
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697468
Yi Zhang, Zheng-Yang Dai, Yong Fang
{"title":"Voltage Feed Forward Shunt Active Power Filter Based On Double Loop Control","authors":"Yi Zhang, Zheng-Yang Dai, Yong Fang","doi":"10.1109/POWERCON53785.2021.9697468","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697468","url":null,"abstract":"The current control of single-phase shunt active power filter (SAPF) adopts a dual-loop control structure. The inner loop PI controller modifies the frequency response of LCL filter, simplifies the design of outer loop repetitive controller, and achieves a fast transient response. A plus-in repetitive controller is adopted as the outer loop controller to eliminate steady-state error. The disturbance caused by the grid voltage, is attenuated by feed forward control. The analysis of the performance of feed forward control, the stability and robustness of the dual-loop control system is detailed in this paper. All the analysis and experimental results show that the dual-loop control system has well steady-state performances, fast transient response, good attenuation of grid voltage, and is robust to variation of LCL filter parameters.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127242445","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
Fast Shapelet Learning for Power System Dominant Instability Mode Identification 基于快速Shapelet学习的电力系统失稳模式辨识
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697877
Runfeng Zhang, Zhongtuo Shi, W. Yao, Yanhao Huang, Yong Tang, J. Wen
{"title":"Fast Shapelet Learning for Power System Dominant Instability Mode Identification","authors":"Runfeng Zhang, Zhongtuo Shi, W. Yao, Yanhao Huang, Yong Tang, J. Wen","doi":"10.1109/POWERCON53785.2021.9697877","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697877","url":null,"abstract":"Digital simulation is an essential part of supporting the safe and stable operation of power systems. One of the most crucial processes is to make the control decision table after a large amount of transient stability simulation. This process requires to be able to accurately distinguish between the transient (rotor angle) instability and short-term voltage instability. This paper proposes a fast shapelet learning method to extract features from the original voltage and rotor angle curves and then classify them through a machine learning (ML) model. Shapelet learning is a powerful data mining method, which can be used to extract hidden explainable information from power system time-domain simulation data. To overcome the huge time complexity of the shapelet transformation method, a genetic algorithm is applied to speed up the solution procedure. A case study is conducted on an 8-machine 36-bus system, and the simulation result indicates that the proposed method is with high explainability and fast learning speed.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"109 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131090167","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
Digital-Analog Hybrid Simulation of Southwest Planning Power Grid with Multi-HVDC Concentrated Delivery 多hvdc集中输送西南规划电网数模混合仿真
2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697571
Weiwei Wang, Xiaoli Zhang, Yueting Li, Guangheng Pang, Jingfang Wang, Yiying Zhu, Chongra Liu
{"title":"Digital-Analog Hybrid Simulation of Southwest Planning Power Grid with Multi-HVDC Concentrated Delivery","authors":"Weiwei Wang, Xiaoli Zhang, Yueting Li, Guangheng Pang, Jingfang Wang, Yiying Zhu, Chongra Liu","doi":"10.1109/POWERCON53785.2021.9697571","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697571","url":null,"abstract":"Security and stability operation of multi-HVDC concentrated delivery power grid in southwest China is related to the reliable transmission of large hydropower bases, safety working of Southwest main power network and Tibet power system, and power supply to East and Central China. Digital-analog hybrid simulation-- EMT model of large-scale power grid with physical control and protection devices has obvious advantages in studying the interaction between AC and DC. Based on the new generation of UHVAC/DC hybrid simulation platform in State Grid Simulation Center, a detailed EMT real-time simulation model of Southwest power grid in 2025 level year with voltage level of 110kV and above is built. In this model, 9 located HVDCs are simulated with 3 physical controllers and 6 digital control systems. Detailed simulation is carried out for the faults near the five DC transmission terminals in the centralized area. The AC and DC response in the process of faults and recovery are studied, and also the influence of commutation failure of one DC project on other DC systems. The results shows that AC faults in Panxi area doesn not have a serious impact on the concentrated DCs in the region. However, for the commutation failure of one DC circuit, the commutation failure of adjacent DC may occur at the same time due to the increase of sending terminal voltage.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635031","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
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