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15th IET International Conference on AC and DC Power Transmission (ACDC 2019)最新文献

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Protection and pole voltage rebalancing for pole-to-ground faults in symmetrical monopolar HVDC grids 对称单极直流电网极地故障的保护与极电压再平衡
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-04-01 DOI: 10.1049/CP.2019.0043
Mian Wang, W. Leterme, G. Chaffey, J. Beerten, D. Hertem
{"title":"Protection and pole voltage rebalancing for pole-to-ground faults in symmetrical monopolar HVDC grids","authors":"Mian Wang, W. Leterme, G. Chaffey, J. Beerten, D. Hertem","doi":"10.1049/CP.2019.0043","DOIUrl":"https://doi.org/10.1049/CP.2019.0043","url":null,"abstract":"","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114998921","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
Assessment of Passive Islanding Detection Methods for DC Microgrids 直流微电网无源孤岛检测方法评价
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-03-30 DOI: 10.1049/CP.2019.0016
Ahmad Makkieh, Anthony Florida-James, D. Tzelepis, A. Emhemed, G. Burt, S. Strachan, A. Junyent-Ferré
{"title":"Assessment of Passive Islanding Detection Methods for DC Microgrids","authors":"Ahmad Makkieh, Anthony Florida-James, D. Tzelepis, A. Emhemed, G. Burt, S. Strachan, A. Junyent-Ferré","doi":"10.1049/CP.2019.0016","DOIUrl":"https://doi.org/10.1049/CP.2019.0016","url":null,"abstract":"This paper provides an assessment of passive islanding detection methods in DC microgrids. In order to analyse the response of a DC microgrid to an islanding event, DC voltage and current signatures are captured locally at the terminals of Distributed Energy Resources (DERs). Further analysis on DC voltage and current measurements is carried out to derive the Rate of Change of Voltage (ROCOV) and the Rate of Change of Current (ROCOC), to distinguish between genuine islanding events and other disturbances. A detailed DC microgrid has been developed in MATLAB/Simulink to analyse the response of the DERs within a DC microgrid during intentional or unintentional islanding events. The results show that these approaches cannot be used to classify and characterise between islanding and non-islanding events caused by high resistive faults for DC microgrids, as the response of the DERs are dependent on the technology and associated control systems,which influences post event analysis in distinguishing between events.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115955321","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: 19
Coordination of Mechanical DCCBs and Temporary Blocking of Half Bridge MMC 机械dccb的协调与半桥MMC的临时阻塞
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-07 DOI: 10.1049/CP.2019.0036
M. Zaja, D. Jovcic
{"title":"Coordination of Mechanical DCCBs and Temporary Blocking of Half Bridge MMC","authors":"M. Zaja, D. Jovcic","doi":"10.1049/CP.2019.0036","DOIUrl":"https://doi.org/10.1049/CP.2019.0036","url":null,"abstract":"This paper proposes a dc grid protection strategy based on temporary MMC blocking in combination with mechanical DCCBs on dc lines. MMCs are blocked for only a short period of time while DCCBs operate and resume operation afterwards. A comparison is made with a protection strategy in which MMC blocking is avoided. The study analyses the impact of dc faults on dc power flow, ac system, DCCB dimensioning and MMC’s antiparallel diodes. Operation is demonstrated on a point-to-point HVDC and a three-terminal dc grid, also using thermal model of MMC’s IGBT module. Main benefits of the proposed strategy are simplicity and low protection system cost. On the downside, antiparallel diodes are exposed to greater current and thermal stress.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122465009","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: 7
Small signal state space model of the frequency-dependent DC cable based on direct vector fitting 基于直接向量拟合的频率相关直流电缆小信号状态空间模型
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-07 DOI: 10.1049/CP.2019.0047
S. Kovacevic, D. Jovcic, P. Rault, A. Schwob
{"title":"Small signal state space model of the frequency-dependent DC cable based on direct vector fitting","authors":"S. Kovacevic, D. Jovcic, P. Rault, A. Schwob","doi":"10.1049/CP.2019.0047","DOIUrl":"https://doi.org/10.1049/CP.2019.0047","url":null,"abstract":"This paper proposes a new method to represent transmission lines and cables in state space. The method accounts for the frequency dependency of line parameters and essentially translates the state of the art time-domain universal line model into state space. The proposed model is compared against the latest state space model for single DC cable and a bipolar DC cable and it shows certain advantages. DC cables are represented without applying Kron reduction which means that a higher accuracy can be achieved. Single DC cable is represented with a lower model order and higher accuracy for a wide spectre of upper frequency limits and cable lengths. The longer the cable and the higher the upper frequency limit, the more pronounced is the model order reduction. The two state space models are also compared for a 70km bipolar DC cable in the frequency range up to 1 kHz and the proposed model achieves higher accuracy with a slightly lower model order. More importantly, the proposed model succeeds at representing the effect of mutual coupling within the desired accuracy criteria. Furthermore, based on the analysis of the two-conductor DC cable (bipolar cable), it is shown that the proposed method overcomes the issue to represent unbalanced multi-conductor lines and cables in state space. The reason is that it avoids modal transformation. Moreover, in case of multi-conductor lines and cables, it is expected that the proposed method is beneficial for longer systems, higher upper frequency limits and for more mutually coupled conductors.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134523963","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: 4
Investigation of the Impact of Interoperability of Voltage Source Converters on HVDC Grid Fault Behaviour 电压源变流器互操作性对高压直流电网故障行为影响的研究
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-07 DOI: 10.1049/cp.2019.0031
V. Psaras, A. Emhemed, G. Adam, G. Burt
{"title":"Investigation of the Impact of Interoperability of Voltage Source Converters on HVDC Grid Fault Behaviour","authors":"V. Psaras, A. Emhemed, G. Adam, G. Burt","doi":"10.1049/cp.2019.0031","DOIUrl":"https://doi.org/10.1049/cp.2019.0031","url":null,"abstract":"Future HVDC grids are expected to incorporate different power converters from multiple vendors in the same system. Even if a complete converter station is developed by a single manufacturer, it might be challenging to integrate this terminal into a DC grid that comprises of several converter stations built by other vendors. Moreover, the different fault response exhibited by each converter technology complicates the design of HVDC protection systems. Therefore, this study investigates the fault response of a multivendor HVDC grid. An illustrative 4-terminal meshed HVDC grid, which is modelled in PSCAD environment, is used to perform studies of interoperability of different converter topologies on a common HVDC network. The investigation of the fault behaviour of such a multivendor HVDC network highlights the main impediments that need to be tackled and a set of actions that needs to be done at a converter level in order to mitigate the impact of DC faults on the HVDC system. Moreover, the key parameters that need to be taken into account when designing a protection scheme for a multivendor HVDC grid are identified.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131028295","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
Improved droop control with DC grid resonance damping capability 改进的下垂控制与直流电网共振阻尼能力
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-06 DOI: 10.1049/CP.2019.0015
A. Egea-Àlvarez, S. Fekriasl, E. Prieto‐Araujo
{"title":"Improved droop control with DC grid resonance damping capability","authors":"A. Egea-Àlvarez, S. Fekriasl, E. Prieto‐Araujo","doi":"10.1049/CP.2019.0015","DOIUrl":"https://doi.org/10.1049/CP.2019.0015","url":null,"abstract":"The concept of the so-called droop control has been widely discussed in the literature as the preferred controller for Voltage Source Converter for High Voltage Direct Current (VSC-HVDC) multiterminal and DC grid schemes. Droop control provides fast dynamic response and power-sharing between converter stations among other advantages but, as the controller is usually implemented as a merely proportional gain, the DC grid resonances damping is often very poor. This is because although the grids under study are DC, a broad range of high-frequency components and transient dynamics are inevitable in DC grids caused by long cables and switching to name a few. Conventional droops based on proportional gain are not able to handle such frequency-dependant issues of the DC grids. To improve the DC dynamic response, this paper presents a new droop controller where a DC resonance mitigation compensator is augmented to the conventional droop control that will result in an improved droop compensation by guaranteeing that power-sharing task will satisfactorily meet the desired damping requirements.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132983892","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
Multi-zone LVDC distribution systems architecture for facilitating low carbon technologies uptake 促进低碳技术采用的多区域LVDC配电系统架构
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-06 DOI: 10.1049/CP.2019.0020
A. Emhemed, D. Wang, G. Burt, Jawwad Zafar, A. Kazerooni, A. Donoghue
{"title":"Multi-zone LVDC distribution systems architecture for facilitating low carbon technologies uptake","authors":"A. Emhemed, D. Wang, G. Burt, Jawwad Zafar, A. Kazerooni, A. Donoghue","doi":"10.1049/CP.2019.0020","DOIUrl":"https://doi.org/10.1049/CP.2019.0020","url":null,"abstract":"Low voltage direct current (LVDC) distribution systems have recently been considered as an alternative approach to provide flexible infrastructure with enhanced controllability to facilitate the integration of low-carbon technologies (LCTs). To date, there is no business-as-usual example of LVDC for utility applications and only few trials have been developed so far. The deployment of LVDC in general will present revolutionary changes in LV distribution networks. This will require are thinking of network design principles and the enablement of integrated solutions. This discussion paper reviews the current practice in utility-scale LVDC distribution networks worldwide. The paper also presents a new multi-zone architecture approach which can be used to better understand future of LVDC systems, and exploit their inherent flexibility to allow synergistic integration of multiple energy technologies.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117194670","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
Novel Partial Power Flow Solver for Multi - Terminal HVDC control 一种新型多端直流控制局部潮流求解方法
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-06 DOI: 10.1049/cp.2019.0011
Imhotep Baptiste, M. Barnes, O. Marjanovic
{"title":"Novel Partial Power Flow Solver for Multi - Terminal HVDC control","authors":"Imhotep Baptiste, M. Barnes, O. Marjanovic","doi":"10.1049/cp.2019.0011","DOIUrl":"https://doi.org/10.1049/cp.2019.0011","url":null,"abstract":"","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122743019","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
Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System MTDC电网重构与控制对GB系统动力学的影响
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-06 DOI: 10.1049/CP.2019.0065
R. Shah, M. Barnes, R. Preece
{"title":"Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System","authors":"R. Shah, M. Barnes, R. Preece","doi":"10.1049/CP.2019.0065","DOIUrl":"https://doi.org/10.1049/CP.2019.0065","url":null,"abstract":"Multi-terminal DC (MTDC) grids are becoming increasingly popular for interconnecting non-synchronous generating resources such as offshore wind power plants (WPPs). The benefit of MTDC systems is that they can be reconfigured during contingencies to maintain the supply of power to the host AC systems. DC grid reconfiguration in MTDC systems will inevitably change the power injections to the host AC system, and will thus affect the dynamic behaviour of the AC system. This paper investigates the dynamic behaviour of the representative Great British (GB) transmission system (i.e. a reduced order dynamic model) for a series of reconfigurations in a meshed MTDC grid connecting offshore WPPs to the system. Hierarchical control strategies for the MTDC system including a DC power flow solver (PFS) and pilot voltage droop (PVD) are compared. From the analysis, it is observed that the reconfiguration of MTDC grid has a notable impact on large-disturbance dynamics of the GB transmission system.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132111306","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
An analysis of the impact of an advanced aero-hydro-servo-elastic model of dynamics on the generator-converter dynamics, for an offshore fixed 5MW PMSG wind turbine 基于先进的气动-液压-伺服-弹性动力学模型对海上固定5MW PMSG风力发电机-变流器动力学的影响分析
15th IET International Conference on AC and DC Power Transmission (ACDC 2019) Pub Date : 2019-02-05 DOI: 10.1049/CP.2019.0080
J. Carmona-Sánchez, Zi Lin, M. Collu, M. Barnes, O. Marjanovic, D. Cevasco
{"title":"An analysis of the impact of an advanced aero-hydro-servo-elastic model of dynamics on the generator-converter dynamics, for an offshore fixed 5MW PMSG wind turbine","authors":"J. Carmona-Sánchez, Zi Lin, M. Collu, M. Barnes, O. Marjanovic, D. Cevasco","doi":"10.1049/CP.2019.0080","DOIUrl":"https://doi.org/10.1049/CP.2019.0080","url":null,"abstract":"This paper gives a comparative analysis of the performance of a wind turbine direct drive train system with PMSG and fully rated converters when two different wind turbine models are used for its assessment. The impact of the advanced Aero-Hydro-Servo-Elastic model, and the most common analytical function wind turbine model, on the generator-converter dynamics are assessed. Results corresponding to the system response to steps up/down in wind speed and turbulent wind speed conditions are presented and discussed in the paper. It is found that below rated speed there is no significant difference between results obtained from both models. Above rated wind speed there exist some differences among results.","PeriodicalId":362400,"journal":{"name":"15th IET International Conference on AC and DC Power Transmission (ACDC 2019)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114919943","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: 4
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