2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)最新文献_第2页

Ripple suppression scheme of DC distribution network based on storage converter control 基于存储变换器控制的直流配电网纹波抑制方案

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2538

Z. XiaHui, H. Minxiao, Z. Guangyang, Z. Yuewei, L. Tongwen

{"title":"Ripple suppression scheme of DC distribution network based on storage converter control","authors":"Z. XiaHui, H. Minxiao, Z. Guangyang, Z. Yuewei, L. Tongwen","doi":"10.1049/icp.2021.2538","DOIUrl":"https://doi.org/10.1049/icp.2021.2538","url":null,"abstract":"In the DC distribution network connected to the middle voltage AC system, when the three-phase load of the AC system is unbalanced or an asymmetric fault occurs, there will be an AC component in the power flowing into the DC bus, which will cause ripples in the DC bus voltage The component affects the power quality of the DC distribution network and threatens the normal operation of the electrical equipment in the DC distribution network. Therefore, on the basis of the original bidirectional DC/DC converter, this paper adds a compensation capacitor and additional inductance on the low-voltage side to realize the separation control and output of the energy storage current and the ripple suppression current. Aiming at this improved SC topology, a VPI control-based energy storage converter control strategy is proposed, which realizes the non-difference tracking of the ripple voltage. Finally, a DC distribution network simulation model with VSC converter, DC load and DC battery energy storage was built in Matlab/Simulink. Under the premise of safe operation, by comparing with the original proportional outer loop voltage control, the DC distribution network voltage with smaller ripple is obtained, which verifies the advantages of the control method proposed in this article.","PeriodicalId":242596,"journal":{"name":"2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121554003","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 radio interference influencing factors of high altitude HVDC transmission lines based on variable selection 基于变量选择的高空直流输电线路无线电干扰影响因素分析

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2593

X. Peng, X. Xiao, W. Lu, X. Wei, Y. Fu

{"title":"Analysis of radio interference influencing factors of high altitude HVDC transmission lines based on variable selection","authors":"X. Peng, X. Xiao, W. Lu, X. Wei, Y. Fu","doi":"10.1049/icp.2021.2593","DOIUrl":"https://doi.org/10.1049/icp.2021.2593","url":null,"abstract":"The electromagnetic environment of transmission lines has an important influence on the HVDC transmission project. In high altitude environment, the problem of electromagnetic environment is more serious because the line corona discharge is more intense. In the traditional research, the electromagnetic environment test of DC line generally does not get a lot of long-term test data. On the other hand, previous methods for predicting the electromagnetic environment of HVDC transmission lines are not sophisticated enough to comprehensively consider the influence of various factors on the electromagnetic environment. Based on the long-term measurement data of DC test lines in high altitude environment, this article uses the method of variable selection to evaluate the influence of different factors on radio interference characteristics, and selects the factors with significant influence, and obtains the influence of different factors on radio interference characteristics through statistical analysis. The results show that the radio interference increases with the increase of equivalent wind speed and decreases with the increase of relative humidity.","PeriodicalId":242596,"journal":{"name":"2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115823303","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

FPGA algorithm implementation of hybrid MMC harmonic injection strategy FPGA算法实现混合MMC谐波注入策略

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2574

H. Wang, J. Xu

{"title":"FPGA algorithm implementation of hybrid MMC harmonic injection strategy","authors":"H. Wang, J. Xu","doi":"10.1049/icp.2021.2574","DOIUrl":"https://doi.org/10.1049/icp.2021.2574","url":null,"abstract":"Capacitor submodule occupies a large volume in Modular multi-level Converter (MMC) and costs a lot of money. Harmonic injection strategy can often achieve the effect of reducing the voltage fluctuation of the sub-module capacitors. Therefore, it can reduce reduce the construction cost of the HVDC transmission system. On the basis of introducing the basic principle of hybrid MMC harmonic injection and simulation verification on PSCAD platform, this paper introduces the physical platform of four-terminal flexible power grid, including its hardware display and monitoring and testing interface, showing the diversity of real-time data acquisition methods. Finally, through the experimental research on the implementation of the hybrid MMC harmonic injection strategy by FPGA, the modulation wave, the conduction number of the sub-module, the capacitance voltage of the sub-module and other physical quantities before and after the second harmonic injection are compared and analyzed. It is verified that the second harmonic injection can change the shape of the voltage modulation wave. At the same time, the second harmonic injection can reduce the voltage fluctuation of the capacitor of the sub-module and realize the lightening from the perspective of reducing the capacitor demand.","PeriodicalId":242596,"journal":{"name":"2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132915299","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

Calculation and modelling of transformer parasitic capacitance 变压器寄生电容的计算与建模

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2589

Wenbo Guo, J. Yang, R. Li

引用次数: 1

Design and stability analysis of broadband trsansient electric field sensor for new power system 新型电力系统宽带暂态电场传感器的设计与稳定性分析

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2594

T. Wang, B. Luo, S. Wang, C. Zhuang, Y. Geng

引用次数: 0

High power reverse blocking IGCT for power grid 用于电网的大功率反向阻断IGCT

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2548

X. Pan, F. Chen, Y. Sun, Y. Chen, H. Zeng, P. Zou

引用次数: 0

Review on key technologies of DC high speed switch in a multi-terminal UHVDC system 多端子特高压直流系统直流高速开关关键技术综述

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2561

X. Yang, C. Zhang, J. Lv, W. Li, M. Li, W. Wang

引用次数: 1

Research on motor drive technology of highvoltage circuit breaker 高压断路器电机驱动技术的研究

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2568

Y. Deng, N. Fan, L. Hao, H. Yang, M. Xia, Y. Huang

引用次数: 0

Research on negative sequnence current coordinated control strategy for severe asymmetric offshore ac faults of wind power transmission system based on mmchvdc 基于超高压直流的海上风电传输系统严重非对称交流故障负序电流协调控制策略研究

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2536

J. Yan, Q. Zeng, Y. Li, L. Lin

{"title":"Research on negative sequnence current coordinated control strategy for severe asymmetric offshore ac faults of wind power transmission system based on mmchvdc","authors":"J. Yan, Q. Zeng, Y. Li, L. Lin","doi":"10.1049/icp.2021.2536","DOIUrl":"https://doi.org/10.1049/icp.2021.2536","url":null,"abstract":"When there is a severe asymmetric offshore ac fault in the grid-connected system for full-scale type-4 wind turbines via the high voltage direct current (HVDC) transmission system based on modular multilevel converters (MMC), there will be transient overcurrent in the MMC and the grid side converters (GSC) of wind turbines. In order to prevent transient overcurrent, a negative sequence coordinated current control strategy is proposed in this paper. The method of decoupling circuit characteristics and control characteristics is adopted to study the asymmetric fault characteristics of this system. The levels of the negative sequence current during severe asymmetric ac faults are analysed. The key influencing factor of the negative sequence currents is extracted. And the feature that the negative sequence currents of the MMC and the GSC cannot be suppressed to 0 simultaneously is revealed. Based on the above reasons, the control strategy that the negative sequence current of the MMC is suppressed to zero and the GSC cooperate to reduce the positive sequence current thus reducing the current stress of the bridge arm is proposed. Finally, an electromagnetic transient model was built on PSCAD to verify the effectiveness of the control strategy.","PeriodicalId":242596,"journal":{"name":"2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116338545","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

Power supply capability evaluation of AC/DC hybrid distribution network considering charging-swapping-storage integrated station 考虑充换蓄一体化电站的交直流混合配电网供电能力评价

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2584

H. Yuan

{"title":"Power supply capability evaluation of AC/DC hybrid distribution network considering charging-swapping-storage integrated station","authors":"H. Yuan","doi":"10.1049/icp.2021.2584","DOIUrl":"https://doi.org/10.1049/icp.2021.2584","url":null,"abstract":"With the development of DC distribution technology, electric vehicles and renewable energy will be more efficient access to the grid. In this paper, a model of power supply capability evaluation is proposed, which takes the electric vehicle chargingswapping-storage integrated station and AC/DC hybrid distribution network into account. Firstly, the battery charging station model is built based on the driving behavior characteristics of electric vehicle fast charging users, and then the model of battery swapping station is established combined with urban road traffic model. Finally, the model of electric vehicle charging-swapping-storage integrated station is completed by combining the model of energy storage station. In the AC/DC hybrid distribution network with wind turbine, photovoltaic and integrated station, a power supply capability evaluation model is established. The model is a nonlinear nonconvex mixed integer programming problem, which could be transformed into a mixed integer second-order cone convex optimization problem. The model could be efficiently solved by commercial solver by using linearization and second-order cone relaxation techniques. Taking the modified IEEE33 test system as an example, the effectiveness and rationality of the proposed model are verified by combining with the actual road traffic situation in a certain area.","PeriodicalId":242596,"journal":{"name":"2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127660167","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