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2020 4th International Conference on HVDC (HVDC)最新文献

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Research on Topology of Medium Voltage Hybrid DC Circuit Breaker Based on IGCT 基于IGCT的中压混合直流断路器拓扑结构研究
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292772
Xiaomin Zhao, Wenkui Liu, Xiao Li, S. Pang, Mingfei Wang, Hang Zhang
{"title":"Research on Topology of Medium Voltage Hybrid DC Circuit Breaker Based on IGCT","authors":"Xiaomin Zhao, Wenkui Liu, Xiao Li, S. Pang, Mingfei Wang, Hang Zhang","doi":"10.1109/HVDC50696.2020.9292772","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292772","url":null,"abstract":"As the essential protection component in DC distribution system, medium voltage DC circuit breaker that needs to have the characteristics of breaking DC fault current quickly and reliably is the guarantee of the system safe operation. In this paper, taking advantage of IGCT's advantages of low on-state loss, fast turn-off speed and high reliability, a topology of medium voltage hybrid DC circuit breaker with high breaking current, fast breaking speed and high reliability is proposed, which combines the quick breaking performance of high-speed switch. The optimal parameters of the topology scheme are determined by studying the influence of arc voltage, the charging voltage of capacitor, capacitance and transfer reactor on the breaking characteristics and current transfer characteristics of hybrid circuit breaker. The circuit breaker proposed in this paper can realize the current breaking from 10 A to 20 kA under the conditions, the clearing time is less than 2 ms. The research results show that the topology of Hybrid DC circuit breaker proposed in this paper has good applicability and feasibility.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"26 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113971462","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
Optimal Dispatch for EGH-IES Considering Demand Response and Energy Storage 考虑需求响应和储能的EGH-IES最优调度
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292896
Weibin Yin, Jialin Yu, Shuhe Yan, Chengcheng Shao
{"title":"Optimal Dispatch for EGH-IES Considering Demand Response and Energy Storage","authors":"Weibin Yin, Jialin Yu, Shuhe Yan, Chengcheng Shao","doi":"10.1109/HVDC50696.2020.9292896","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292896","url":null,"abstract":"The integrated energy system (IES) is an important development direction of future energy. Realizing the optimal dispatch of the integrated energy system is beneficial to improve its economic and environmental benefits. Aiming at the problem of insufficient consumption of renewable energy such as wind power, this paper proposes an optimization dispatch model of combining CHP unit and wind power generation. Coordinated constraints such as the uncertainty modeling of wind power in source side, the modeling of multi-energy flow of regional electricity in grid side, the comprehensive demand response on the load side, and the electrical heating of the storage side are included. Therefore, the optimization dispatch model proposed will optimize the output and load curve of each unit to increase the grid-connected wind power consumption and reduce the system load shedding level. In addition, this model aims to minimize the operating cost of the system, integrating “source-network-load-storage’ constraints, and calling Gurobi to solve it. Finally, the analysis results of specific calculation examples prove that this model can effectively promote wind power consumption and reduce system operation costs.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115179069","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
Simulation and Analysis on Stability Improvement of Zhangbei Renewable Energy Transmission via VSC-HVDC Based on RTDS 基于RTDS的张北VSC-HVDC可再生能源输电稳定性提升仿真与分析
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292860
Mingqun Guo, Xuan Li, Zijian Gao, G. Su
{"title":"Simulation and Analysis on Stability Improvement of Zhangbei Renewable Energy Transmission via VSC-HVDC Based on RTDS","authors":"Mingqun Guo, Xuan Li, Zijian Gao, G. Su","doi":"10.1109/HVDC50696.2020.9292860","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292860","url":null,"abstract":"Voltage sourced converter based high-voltage direct current (VSC- HVDC) transmission has been applied efficiently in renewable energy transmission. Due to the existence of a large number of power electronic devices in renewable energy station and VSC-HVDC system, there is a potential risk that various types of oscillation might occur under specific circumstances. Zhangbei project is a ± 500kV VSC-HVDC grid demonstration project in China for renewable energy transmission. A real-time simulation model of Zhangbei project, including large-scale renewable energy stations, VSC-HVDC grid, AC network, is established based on RTDS, the actual renewable energy generator controller and VSC-HVDC controller are connected. Two methods to improve system stability, both optimizing controller parameter and introducing additional control loop, were studied and verified.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114667828","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: 6
Transient Voltage Prediction for the Grid-connected Point in Restoration of Distribution Network with Microgrid 微电网配电网恢复中并网点暂态电压预测
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292893
Yuze Ji, Dahai Zhang, Chuanjian Wu, Hao Sun
{"title":"Transient Voltage Prediction for the Grid-connected Point in Restoration of Distribution Network with Microgrid","authors":"Yuze Ji, Dahai Zhang, Chuanjian Wu, Hao Sun","doi":"10.1109/HVDC50696.2020.9292893","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292893","url":null,"abstract":"When the microgrid provides power for the restoration of the distribution network, the stability of the voltage will affect the integration of the microgrid. The traditional voltage verification method is only suitable for large-capacity power supply systems, and ignores the fluctuation of the internal parameters of the system. This paper studies the transient characteristics of voltage when the microgrid is connected to the distribution network in an outage state, and proposes an effective prediction method. This method uses a tracing algorithm for Thevenin Equivalent Parameters based on complete differential equation to solve the equivalent circuit parameters of the microgrid, and uses the Thevenin equivalent parameters of the microgrid as the main input characteristic variables, and establishes a voltage prediction model based on the BP neural network. Finally, a typical low-voltage microgrid example is used to verify the effectiveness of the voltage prediction method.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134186123","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
Application of a Power Quality Comprehensive Compensation Device in 10 kV Sparse Distribution Network: Modeling and Simulation 电能质量综合补偿装置在10kv稀疏配电网中的应用:建模与仿真
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292877
Yue Fan, Xiaoguang Zhu, Senlin Yang, Yubo Guo, Lishan Ma, Tao Yu, Jun-bo Deng
{"title":"Application of a Power Quality Comprehensive Compensation Device in 10 kV Sparse Distribution Network: Modeling and Simulation","authors":"Yue Fan, Xiaoguang Zhu, Senlin Yang, Yubo Guo, Lishan Ma, Tao Yu, Jun-bo Deng","doi":"10.1109/HVDC50696.2020.9292877","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292877","url":null,"abstract":"Sparse power distribution networks are widely found in remote areas in western China, with features such as wide coverage, low load density, and few power points. Many problems in the operation of 10kV sparse distribution network indicate that traditional fixed reactive power compensation is difficult to meet operating requirements. This paper proposes a power quality comprehensive compensator (PQCC), including parallel static synchronous compensators and series voltage regulators. Using PSCAD/EMTDC software, a system simulation model including a power electronic compensation device was established. The optimization method of compensation device location based on a certain compensation capacity is studied, and the best configuration plan of the equipment location is given. The article evaluates the performance of the distribution network with PQCC devices, and studies the electromagnetic transient characteristics under typical fault conditions. Combining the steady-state and transient characteristics of the system, the simulation results indicate that the proposed compensation device has a good effect in steady-state operations, and also has obvious reliability in transient conditions. The results have guiding significance for the design and construction of actual projects.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134397103","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
Review on HVDC circuit-breaker tests 高压直流断路器试验回顾
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292815
S. Jia, Qiang Tang, Z. Shi
{"title":"Review on HVDC circuit-breaker tests","authors":"S. Jia, Qiang Tang, Z. Shi","doi":"10.1109/HVDC50696.2020.9292815","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292815","url":null,"abstract":"Research and development of HVDC circuit-breakers (CBs) is a spotlight as the existing and planning VSC-HVDC projects are in increasing need of HVDC CBs. However, at moment there are no universal standards can be referred to for designing, testing and operating an HVDC CB. This review outlines the fault current interruption process of HVDC CB regardless of the internal current commutation principle. Requirements of testing current and voltage stresses from the system side are specified including two key performance indicators, which are energy dissipation capability and the duration of transient interruption voltage (TIV). The suggested test items are listed with reference to testing experience of different HVDC CBs for HVDC projects. Discussions on the test duties are also analyzed from different perspectives. Two potential test methods proved by experiments are presented. The latest progress on standards for HVDC CB is introduced.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133756080","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: 5
Comparative Study on the Operating Range of the Traditional and the Compact Modular Multilevel Converters 传统与紧凑型模块化多电平变换器工作范围的比较研究
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292821
Mengfei Li, Zhiye Chen, Huan Yang, R. Zhao, F. Xu, Yi Lu
{"title":"Comparative Study on the Operating Range of the Traditional and the Compact Modular Multilevel Converters","authors":"Mengfei Li, Zhiye Chen, Huan Yang, R. Zhao, F. Xu, Yi Lu","doi":"10.1109/HVDC50696.2020.9292821","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292821","url":null,"abstract":"Modular multilevel converter (MMC) is widely used in the interconnection of two AC systems with the back-to-back (BTB) structure, such as high voltage direct current transmission system, unified power flow controller and so on. However, the BTB MMC requires a lot of devices and large footprint. The compact dual-output MMCs, including nine-arm MMC, bifurcate MMC and modular multilevel matrix converter, can save the required devices at the expense of reduced operating range, which has not been thoroughly investigated. Therefore, this paper carries out a comparative study on the operating range of the traditional MMC and the compact MMCs to further clarify their merits and demerits. The basic operational principles and constraints on steady operation are analyzed, and the operating ranges are illustrated by intuitive power graphs.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132980292","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 Novel Calorimetric Loss Measurement Method For High-Power High-Frequency Transformer Based on Surface Temperature Measurment 基于表面温度测量的大功率高频变压器热损耗测量新方法
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9477291
Zheyuan Yi, Hanyu Liu, K. Sun
{"title":"A Novel Calorimetric Loss Measurement Method For High-Power High-Frequency Transformer Based on Surface Temperature Measurment","authors":"Zheyuan Yi, Hanyu Liu, K. Sun","doi":"10.1109/HVDC50696.2020.9477291","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9477291","url":null,"abstract":"Accurate loss measurement methods are necessary for modeling losses of high-power high-frequency transformers precisely and further optimizing the efficiency. The electrical loss measurement methods have large error especially for high-efficiency and AC cases like transformers, while the calorimetric methods require complex setup. In this paper, a novel calorimetric loss measurement method based on surface temperature measurement is proposed, which eliminates the need of extra device and complex installation. The method is verified by FEM (Finite Element Method) simulation, having a maximum error of less than 0.1W. In addition, the influences of changes of environmental conditions including air velocity and ambient temperature are studied by FEM simulation as well.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"18 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133076620","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 dynamic simulation topology of DC transmission and distribution system 直流输配电系统的动态仿真拓扑
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292838
Chen Kun, Xu Zhang-Xin, Ye Pang-Qi, Dai Wei-Qian, Li Xue, Wang Ting
{"title":"A dynamic simulation topology of DC transmission and distribution system","authors":"Chen Kun, Xu Zhang-Xin, Ye Pang-Qi, Dai Wei-Qian, Li Xue, Wang Ting","doi":"10.1109/HVDC50696.2020.9292838","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292838","url":null,"abstract":"Aiming at the problems of AC distribution system caused or aggravated by the change of power supply and load forms in recent years, as well as the extended application demand of DC transmission technology in the field of distribution, this paper proposes a topology structure for dynamic simulation of DC transmission and distribution. Firstly, the advantages and disadvantages of AC/DC distribution technology are compared, and then the technical standard and demonstration projects of DC distribution technology in China are introduced, Finally, the technical ideas and applicability of the proposed dynamic simulation topology are analyzed, which can provide support and reference for the research of DC transmission and distribution technology.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121921765","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
DC Impedance Modeling of MMC with Passive Circulating Current Suppressing Circuit 无源循环电流抑制电路MMC直流阻抗建模
2020 4th International Conference on HVDC (HVDC) Pub Date : 2020-11-06 DOI: 10.1109/HVDC50696.2020.9292845
Pengkun Li, Yue Wang, Ying Xu, Wanru Li, T. Yin, Qiao Kang
{"title":"DC Impedance Modeling of MMC with Passive Circulating Current Suppressing Circuit","authors":"Pengkun Li, Yue Wang, Ying Xu, Wanru Li, T. Yin, Qiao Kang","doi":"10.1109/HVDC50696.2020.9292845","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292845","url":null,"abstract":"This paper proposes a simple method to establish the dc impedance of MMC with passive circulating current suppressing circuit (PCCSC) by analyzing the flow path of common mode and differential mode components of arm currents small signal harmonics. It turns out that there exists two resonance points in magnitude-frequency characteristic curves of dc impedance, one resonance peak fixed at second-order frequency and one resonance valley whose frequency is related to the electrical parameters of PCCSC. There also exist two corresponding phase steps in phase-frequency characteristic curves, one phase drop and one phase jump. Effects of control parameters on dc impedance of MMC with PCCSC are also analyzed. Time-domain simulations are provided to verify the theoretical analysis.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124963727","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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