The 17th International Conference on AC and DC Power Transmission (ACDC 2021)最新文献_第3页

A Novel Method to Provide Harmonics Damping to VSC-HVDC Converters 一种为直流变流器提供谐波阻尼的新方法

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2444

L. Souza, A. Kumar, K. Carvalho

引用次数: 0

Equivalence and Accuracy Evaluation of Linearised State-Space Models of the Modular Multilevel Converter for Small-Signal Stability Analysis 用于小信号稳定性分析的模块化多电平变换器线性化状态空间模型的等价性和精度评价

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2445

Ö. C. Sakinci, J. Beerten

引用次数: 0

A NEW CONTROL METHOD FOR FAULT-RIDE-THROUGH OF HVDC-CONNECTED OFFSHORE WIND PARKS 一种新的直流海上风电场故障穿越控制方法

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2455

O. Jasim, P. Briff, Aleem Abid

{"title":"A NEW CONTROL METHOD FOR FAULT-RIDE-THROUGH OF HVDC-CONNECTED OFFSHORE WIND PARKS","authors":"O. Jasim, P. Briff, Aleem Abid","doi":"10.1049/icp.2021.2455","DOIUrl":"https://doi.org/10.1049/icp.2021.2455","url":null,"abstract":"The Multilevel Modular Converter (MMC) has been established as a preferred topology in the field of Voltage Sourced Converter for High Voltage DC (HVDC) transmission. Traditionally, supplementary equipment, for example, a Dynamic Braking System (DBS), is employed to temporarily dissipate the dc power transmitted from the OffshoreWind Parks (OWP) if the onshore grid is unable to absorb the totality of the generated power by the OWP. Such a reduction in power transfer requirement may be due to a fault in the converter station or in the attached ac network. The DBS circuitry requires considerable space and is costly. Due to the limited energy storage capacity embedded within the HVDC system, active power balancing is only possible in coordination with the connected power park modules. The need for control and compensation of converter energy within the valve submodules is paramount to guarantee the correct operation of the converter under normal or abnormal operating conditions. This paper shows two control methods of the offshore converter to provide fault-ride-through capability at the onshore ac grid without the need of a DBS. This is achieved by controlling the frequency and/or the ac voltage magnitude of the offshore ac grid. The concept has been validated by simulation results in PSCAD.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"30 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":"115860543","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

DC segmentation: A promising solution to improve angle stability of stressed power systems 直流分段:一个很有前途的解决方案，以提高角度稳定性的应力电力系统

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2449

M. Robin, J. Renedo, J. Gonzalez‐Torres, A. García-Cerrada, A. Benchaib, P. García-González

{"title":"DC segmentation: A promising solution to improve angle stability of stressed power systems","authors":"M. Robin, J. Renedo, J. Gonzalez‐Torres, A. García-Cerrada, A. Benchaib, P. García-González","doi":"10.1049/icp.2021.2449","DOIUrl":"https://doi.org/10.1049/icp.2021.2449","url":null,"abstract":"The transmission of electricity is currently being dominated by alternating current (AC). However, direct current (DC) has seen an important development in the last decades by overcoming some of AC limitations. In particular, High Voltage Direct Current transmission based on Voltage Source Converters (VSC-HVDC) is seen as a solution to increase power transmission and facilitate the integration of renewable energy sources in power systems. In addition, with its growing share in the electrical grid, and its high controllability, VSC-HVDC systems can also help to improve power system stability. A new approach - called the DC segmentation - is to segment large AC grids into a set of asynchronously operated AC grids interconnected by HVDC links. Among others, this solution could limit the propagation of cascading outages, limit the risk of large scale blackouts, simplify market operation and improves the angle stability of the system. This paper aims to present an otherview of the work done on DC segmentation and to highlight its potential to improve angle stability in stressed power system (against large disturbances: transient stability and against small disturbances: electromechanical oscillations). The paper also illustrates the effect of DC segmentation on the stability of a power system by means of time domain simulation in a small test system.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"13 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":"114299036","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

CALCULATION METHOD FOR THE CONTRIBUTION OF HVDC STATIONS WITH LINE-COMMUTATED CONVERTES (LCC) TO THE AC SHORT-CIRCUIT CURRENT 带线路换流变流器的高压直流站对交流短路电流贡献的计算方法

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2434

A. Saçiak, U. Mora, G. Balzer, J. Hanson

引用次数: 0

A DOUBLE BUS CONFIGURATION WITH MULTI-PORT DC CIRCUIT BREAKERS FOR DC SWITCHING STATIONS 用于直流开关站的带多端口直流断路器的双母线配置

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2446

S. Shuai, K. Sano

引用次数: 0

EVALUATE HVDC PROTECTION AND CONTROL SCHEMES USING HIGH SPEED PROCESS BUS TECHNOLOGY 评估采用高速过程总线技术的高压直流保护和控制方案

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2459

S. Jin, T. Stott

{"title":"EVALUATE HVDC PROTECTION AND CONTROL SCHEMES USING HIGH SPEED PROCESS BUS TECHNOLOGY","authors":"S. Jin, T. Stott","doi":"10.1049/icp.2021.2459","DOIUrl":"https://doi.org/10.1049/icp.2021.2459","url":null,"abstract":"The correct operation and control of an HVDC system greatly depends on the quality of voltage and current measurements. The feasibility and benefits of high-speed measurements (process bus) are analysed from three perspectives: voltage and current sensor technologies, data communication structure, and various HVDC applications. It is found that the recommended sampling frequency of 96 kHz by IEC 61896-9 is adequate for most HVDC protection and valve controls. However, for fault location applications, a higher sampling frequency beyond 200 kHz is preferred. In this paper, a high-speed process bus technique is presented. An HVDC control system testbed is developed using the high-speed process bus technique, featuring 250 kHz Sampled Value (SV) communication, which is more than double the highest sampling rate from the standard. An in-service HVDC control and protection scheme associated with an offshore to onshore wind connection, rated at 900 MW, is investigated on the testbed with a Real Time Digital Simulator (RTDS). HVDC protection and control applications are studied. The results indicate that the high sampling rate allows some protections to act faster, ensuring that expensive primary equipment can be better protected leading to a reduction in size, providing further cost and installation benefits.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"6 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":"122591661","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 Switching of Submodules in Modular Multilevel Converters 模块化多电平变换器中子模块的最优切换

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2472

S. Fekriasl, M. Bazargan, E. P. Araujo, O. G. Bellmunt, S. Tavakoli

引用次数: 0

APPLICATION OF PHASOR-BASED FUNCTIONALITY TO HVDC CONTROL IN REDUCED SYSTEM STRENGTH 基于相量的功能在降低系统强度的高压直流控制中的应用

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2442

Mohammad Amin Golshani, D. Wilson, S. Norris, I. Cowan, Md Rahman, B. Marshall

{"title":"APPLICATION OF PHASOR-BASED FUNCTIONALITY TO HVDC CONTROL IN REDUCED SYSTEM STRENGTH","authors":"Mohammad Amin Golshani, D. Wilson, S. Norris, I. Cowan, Md Rahman, B. Marshall","doi":"10.1049/icp.2021.2442","DOIUrl":"https://doi.org/10.1049/icp.2021.2442","url":null,"abstract":"The control and stability of power electronic converters are strongly related to the strength of the system to which they are connected. Traditionally, synchronous machines have provided a large share of the strength or “stiffness” of voltage control in the grid, but increasingly there are large power electronic converters in remote areas of the grid displacing this synchronous generation. At remote connection points, the network is susceptible to large changes in system strength if lines or generators trip. It is therefore challenging to design power electronic controls to remain stable over a wide range of system operating conditions. The purpose of this paper is to demonstrate capabilities to use Phasor Measurement Unit (PMU) data to derive real-time indicators of the state of the network. These indicators of AC network state can be used to select an appropriate mode of operation by the High-Voltage Direct Current (HVDC) control. This paper describes the developed phasor-based control solution and details of its functional blocks. The control approach combines direct indication of the system strength with other indicators of the outcomes of a weakening system.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"63 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":"121088706","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

Dynamic Adjustment of a VSC's Reactive Current Limit to Improve Frequency Stability 动态调整VSC无功电流极限以提高频率稳定性

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI: 10.1049/icp.2021.2435

J. Fradley, C. Barker, L. Zou

{"title":"Dynamic Adjustment of a VSC's Reactive Current Limit to Improve Frequency Stability","authors":"J. Fradley, C. Barker, L. Zou","doi":"10.1049/icp.2021.2435","DOIUrl":"https://doi.org/10.1049/icp.2021.2435","url":null,"abstract":"Future renewable energy sources will need to provide all ancillary network services, previously provided by the synchronous generators that are being decommissioned. The voltage sourced converter (VSC), with its ability to control active and reactive power independently, can be adapted to provide voltage support. The ability to provide voltage support can require the sacrifice of active power, which can be detrimental to the frequency stability. This paper presents three methods to limit the quantity of reactive power injection that can occur if the frequency has been perturbed. The aim is to provide support to the system frequency by limiting the quantity of active power reduction from the VSC. The three options presented use frequency deviation, rate of change of frequency, or a combination of both, to reduce the maximum reactive current limit. In this work it is shown that using the rate of change of frequency to reduce the maximum reactive current limit, provides the greatest benefit to the frequency stability. All options presented, allow the VSC to provide continually operating voltage support without having to prioritize one form of ancillary service over another.","PeriodicalId":347664,"journal":{"name":"The 17th International Conference on AC and DC Power Transmission (ACDC 2021)","volume":"4 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":"126360792","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