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REPRESENTATIVE MODELLING OF VERY LONG HVDC CABLES 超长高压直流电缆的代表性建模
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 2023-05-18 DOI: 10.1049/icp.2021.2443
J. Schipper, Saijie Sim, Quy Dang, R. Mukhedkar
{"title":"REPRESENTATIVE MODELLING OF VERY LONG HVDC CABLES","authors":"J. Schipper, Saijie Sim, Quy Dang, R. Mukhedkar","doi":"10.1049/icp.2021.2443","DOIUrl":"https://doi.org/10.1049/icp.2021.2443","url":null,"abstract":"Developments in HVDC and cable technologies have opened the door for integration of remote renewables into established electricity systems to displace non-renewable generation. With a significant proportion of solar energy resource concentrated on the Australian and African continents, and load centres in Europe and the ASEAN regions, HVDC projects with cable connection lengths greater than 3000 km are under development. This paper develops a frequency dependent model (FDM) of the DC cable for the Sun Cable Australia-ASEAN Power Link (AAPowerLink). The effect of field joints and the associated earthing resistance is addressed. Exclusion of field joints introduces discrepancy in the core voltage along the cable length and the frequency dependent impedance. Simplification of the cable model within an electromagnetic transient (EMT) platform, whilst retaining a representative frequency dependent behaviour, is demonstrated. Modelling in PSCAD/EMTDC suggests minimum impact of submersion depth on the cable characteristics. Furthermore, the potential for harvesting energy at the field joints is explored.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124326256","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
IMPACT OF FAST FREQUENCY RESPONSE ON POWER SYSTEM TRANSIENT STABILITY 快速频率响应对电力系统暂态稳定的影响
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2436
Z. Zhang, S. Asvapoositkul, R. Preece
{"title":"IMPACT OF FAST FREQUENCY RESPONSE ON POWER SYSTEM TRANSIENT STABILITY","authors":"Z. Zhang, S. Asvapoositkul, R. Preece","doi":"10.1049/icp.2021.2436","DOIUrl":"https://doi.org/10.1049/icp.2021.2436","url":null,"abstract":"This paper investigates the impact of fast frequency response (FFR) on the transient stability of power systems. Focus is paid on the effects of FFR injection location within the transmission network. To allow the analysis to be easily generalised to other low inertia systems, a test system incorporating wind generation and HVDC interconnectors has been used. The FFR is provided by distributed storage devices with grid-following converters. It is shown that FFR can reduce transient stability despite the fact that frequency excursions are arrested. Synchronous generators in the system that are initially operating with a high relative angle displacement and which have low synchronous kinetic energy are considered critical with respect to this analysis. FFR delivered electrically close to critical generators is shown to cause larger angle divergence and will result in a greater chance of transient instability. Variations in system inertia, FFR capacity, disturbance location and network topology have also been stud-ied to establish how severely the transient stability is affected when FFR is delivered at different locations within the system.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 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":"115181452","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
ON MODELING OF AIR-CORE INDUCTORS FOR DC PROTECTION STUDIES 直流保护用空芯电感器的建模研究
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2468
W. Leterme, D. Hertem, C. Niederauer, A. Gaun
{"title":"ON MODELING OF AIR-CORE INDUCTORS FOR DC PROTECTION STUDIES","authors":"W. Leterme, D. Hertem, C. Niederauer, A. Gaun","doi":"10.1049/icp.2021.2468","DOIUrl":"https://doi.org/10.1049/icp.2021.2468","url":null,"abstract":"Most presently considered HVDC circuit breakers make use of series air-core inductors to limit the rate-of-rise of the DC-side fault current. The inductors are also useful for identifying whether a fault is on the line to be protected or not, as they form a filter for wave-fronts originating from external faults. In DC-side fault studies, they are predominantly represented by their (lumped) inductance, thereby neglecting resonance effects due to stray capacitances, whose effect is within this context as yet not investigated. To fill this gap, this paper documents the resonance behavior of air-core inductors and the effect of including this behavior in DC-side fault studies. The paper furthermore compares results as obtained with EMT-type simulation software with those obtained with the Numerical Inverse Laplace Transform (NILT). Including the resonance effect is found to be more important for overhead line than in cable systems, and attention needs to be paid to the choice of simulation time step in EMT-type software.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"260 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":"123966584","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
Inertial Support by Virtual Synchronous Machine Control of a MMC-based VSC HVDC Link 基于mmc的VSC高压直流链路虚拟同步机控制的惯性支持
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2458
F. Puricelli, A. Agbemuko, J. Beerten
{"title":"Inertial Support by Virtual Synchronous Machine Control of a MMC-based VSC HVDC Link","authors":"F. Puricelli, A. Agbemuko, J. Beerten","doi":"10.1049/icp.2021.2458","DOIUrl":"https://doi.org/10.1049/icp.2021.2458","url":null,"abstract":"The transition towards converter-interfaced generation replacing synchronous units is causing concerns over the frequency stability of the power system. Control strategies, recreating synchronous machines stabilising effects, can be implemented in static converters to provide an inertial response after a disturbance. This paper assesses the inertial support that can be supplied by Modular Multilevel Converters (MMCs) with a Virtual Synchronous Machine (VSM) control strategy in a Voltage Source Converter (VSC) High-Voltage Direct Current (HVDC) point-to-point link. To evaluate the inertial support and the resulting influence on the ac grid dynamics, the active power flowing in the link, the rate of change of frequency, and the frequency nadir of the ac grid are analysed. A time-domain sensitivity analysis is carried to show the effect of the VSM parameters on the power, frequency support and impact of converter saturation limits. The results demonstrate an improvement in the frequency behaviour of the ac grid dependent on the selection of the VSM parameters.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 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":"126416732","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
HARDWARE-IN-THE-LOOP TESTS AND ANALYSIS OF HVDC SYSTEM'S IMPACT ON DISTANCE PROTECTION PERFORMANCE 高压直流系统对距离保护性能影响的硬件在环试验与分析
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2451
D. Liu, Q. Hong, A. Dyśko, D. Tzelepis, C. Booth, I. Cowan, B. Ponnalagan
{"title":"HARDWARE-IN-THE-LOOP TESTS AND ANALYSIS OF HVDC SYSTEM'S IMPACT ON DISTANCE PROTECTION PERFORMANCE","authors":"D. Liu, Q. Hong, A. Dyśko, D. Tzelepis, C. Booth, I. Cowan, B. Ponnalagan","doi":"10.1049/icp.2021.2451","DOIUrl":"https://doi.org/10.1049/icp.2021.2451","url":null,"abstract":"This paper presents comprehensive and realistic Hardware-In-the-Loop (HIL) tests of a physical relay and analysis of the test results for evaluating the impact of HVDC systems (and converters in general) on the operation of distance protection. In the established HIL test configuration, simulated voltage and current waveforms from a Real Time Digital Simulator (RTDS) are injected to the relays via an analogue physical amplifier, and the relays' tripping signals are input back in the RTDS to monitor their tripping actions. During the HIL tests, the relay is configured with both MHO and QUAD characteristics, and it is tested during a wide range of system operating conditions with different fault levels, fault types and locations, and HVDC control strategies. The test results show that the integration of the HVDC system could lead to compromised distance protection performance, included failed tripping, delayed tripping and zone discrimination issues. Detailed analysis of the test results is presented, and it is found that the main causes of the identified issues include: 1) under-reach/over-reach problem owing to the angle difference of currents from local and remote ends in the event of resistive faults; 2) inaccurate impedance measurement problem due to identical faulty phase currents during phase-to-phase faults with the constant reactive power control of HVDC system; 3) phase selection issues owing to the abnormal increase of the superimposed currents during phase-earth fault with balanced current control of HVDC system. The results and analysis presented in this paper will not only offer valuable evidence-based insights to understand the challenges of distance protection in future converter-dominated networks, but also provide a useful reference, informing future research and development to address these identified issues.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"42 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":"129027888","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
COOLING OF LARGE ROTATING MACHINES IN HIGHLY RENEWABLE ELECTRICITY SYSTEMS 高度可再生电力系统中大型旋转机器的冷却
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2453
V. Shinde, J.-H. Braam, H. Steins, S. Werkmeister
{"title":"COOLING OF LARGE ROTATING MACHINES IN HIGHLY RENEWABLE ELECTRICITY SYSTEMS","authors":"V. Shinde, J.-H. Braam, H. Steins, S. Werkmeister","doi":"10.1049/icp.2021.2453","DOIUrl":"https://doi.org/10.1049/icp.2021.2453","url":null,"abstract":"In highly renewable electricity systems, large rotating machines such as turbogenerators and synchronous condensers operate at a varied operating range than those in the traditional electricity systems. However, in many cases, it has been observed that this has an enduring effect on these machines by higher thermo-mechanical stresses while causing increased lifetime losses. Hence, there is much more need than ever to revisit the various cooling methods traditionally adopted for large rotating machines. This paper addresses the challenges due to the emerging operating characteristic of large rotating machines and describes the recent technological advancement in the cooling techniques for large rotating machines.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"100 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":"132019444","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
The use of Multi-Purpose Interconnectors to meet net zero by 2050 使用多用途互连器到2050年实现净零排放
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2460
D. Devoy, E. Wells, R. Lodhia, M. Moran, M. Bray, C. A. Smith
{"title":"The use of Multi-Purpose Interconnectors to meet net zero by 2050","authors":"D. Devoy, E. Wells, R. Lodhia, M. Moran, M. Bray, C. A. Smith","doi":"10.1049/icp.2021.2460","DOIUrl":"https://doi.org/10.1049/icp.2021.2460","url":null,"abstract":"The Great Britain (GB) Electricity system has seen a significant increase in Offshore Wind and cross border interconnection, with over 10 GW of offshore wind and 5 GW of interconnection with Continental Europe operational as at July 2021. To meet a net zero ambition by 2050 it is suggested that an installed Offshore Wind capacity of 40 GW by 2030 and 75 GW by 2050 would need to be connected to the GB Electricity System. In addition, the Electricity System Operator indicates more than 20 GW of Interconnection would also be required. However, Wind Farms and Interconnectors are currently connected as single purpose projects to the Onshore Transmission system and continuing this arrangement will bring major permitting challenges and disruption to coastal communities. This paper proposes the use of Multi-Purpose Interconnectors to address the challenges.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"73 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113933170","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
STATCOM+BESS MODELLING AND HARMONIC ANALYSIS Statcom + bess建模和谐波分析
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2447
D. Vilchis-Rodriguez, Arsim Ahmedi, M. Barnes, S. Shen, Zhongdong Wang, Siyu Gao
{"title":"STATCOM+BESS MODELLING AND HARMONIC ANALYSIS","authors":"D. Vilchis-Rodriguez, Arsim Ahmedi, M. Barnes, S. Shen, Zhongdong Wang, Siyu Gao","doi":"10.1049/icp.2021.2447","DOIUrl":"https://doi.org/10.1049/icp.2021.2447","url":null,"abstract":"In this paper, concepts of Static Compensator plus Battery Energy Storage System (STATCOM+BESS) operation, power control and modelling are reviewed. An implementation in Matlab-Simulink, considering a two level VSC based STATCOM+BESS is realized. Details of the implementation are provided and simulation results are presented. A single, aggregated 50 MVA BESS with the STATCOM connected to an external grid, is considered in the assessment. Harmonic propagation analysis is conducted by considering THD values at the point of connection of the STATCOM+BESS station.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"2021 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":"129631969","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
EVALUATION OF A FLEXIBLE SOLUTION, USING A BESS SCHEME TO SUPPLY 11KV DISTRIBUTION NETWORK IN ISLANDED MODE DURING DISTURBANCES 利用Bess方案对11kv孤岛型配电网在干扰下供电的柔性方案进行了评价
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2457
D. Vozikis, A. Emhemed, S. Hynds, M. Filla, S. Rigby
{"title":"EVALUATION OF A FLEXIBLE SOLUTION, USING A BESS SCHEME TO SUPPLY 11KV DISTRIBUTION NETWORK IN ISLANDED MODE DURING DISTURBANCES","authors":"D. Vozikis, A. Emhemed, S. Hynds, M. Filla, S. Rigby","doi":"10.1049/icp.2021.2457","DOIUrl":"https://doi.org/10.1049/icp.2021.2457","url":null,"abstract":"This paper presents an overview of the Resilience as a Service (RaaS) innovation project and the network modelling undertaken to investigate the technical feasibility of implementing a Battery Energy Storage System (BESS) scheme to improve the reliability and security of supply of customers in rural areas. The performance of the BESS scheme is assessed under different network conditions. This will include a variety of network and BESS operational modes - such as grid connected BESS, islanded operation, incorporation of other downstream Distributed Generation (DG), and a temporary diesel generator – together with the transition between these modes. Practical BESS-based black start sequences will be considered with regard to feasibility transient studies and the impact on the network assets. In addition, the impact and synchronisation (reconnection to the main grid) sequences will be explored.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"36 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":"116021801","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 MISO FAULT DETECTION FOR HVDC GRIDS 高压直流电网的miso故障检测
The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2448
I. Jahn, M. Nahalparvari, S. Norrga
{"title":"A MISO FAULT DETECTION FOR HVDC GRIDS","authors":"I. Jahn, M. Nahalparvari, S. Norrga","doi":"10.1049/icp.2021.2448","DOIUrl":"https://doi.org/10.1049/icp.2021.2448","url":null,"abstract":"Research on fault detection for high-voltage direct current (HVDC) grids has had a focus on single-ended DC fault detection using information from only the local line end. This paper proposes the use of additional information from neighbouring lines around the same busbar in a multiple-input single-output (MISO) fault detection. Simulations results show that the protection's dependability and security margins are increased which is particularly useful for remote faults in long lines with small line inductors. A discussion on practical implementation taking into account possible intellectual property (IP) aspects is added. A MISO fault detection can be useful to overcome some of the uncertainties due to missing knowledge about implementation details.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"18 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":"130993596","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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