HVDC protection criteria for transient stability of AC systems with embedded HVDC links

The Journal of Engineering

Valentin Costan¹  Gilney Damm²  A. Benchaib³  Juan Carlos Gonzalez-Torres⁴ 

[1] EDF Lab Paris-Saclay , Palaiseau , France;IBISC Laboratory, Paris-Saclay University , Evry , France;Laboratoire des Signaux et Systémes (LSS) , Gif-surYvette , France;SuperGrid Institute , Villeurbanne , France

关键词: safe operation;    different impacts;    future HVDC links;    HVDC protection criteria;    AC systems;    AC networks;    high-voltage direct current grids;    HVDC protection systems;    transient stability assessment;    HVDC grid;    reliable operation;    existing protection strategies;    synchronous AC network;    embedded HVDC grids;    different protection strategies;    simple but representative AC grid;    HVDC link protection criteria;    embedded HVDC links;   

DOI  :  10.1049/joe.2018.0264

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

In recent years, different protection strategies for high-voltage direct current (HVDC) grids have been developed by the industry and academia for the reliable and safe operation of direct current grids. The proposed strategies have different impacts on the AC networks where HVDC grids are connected. In the case of embedded HVDC grids embedded in a synchronous AC network, a partial loss of the HVDC grid might cause the desynchronisation of the AC grid. Therefore, it is of utmost importance to assess the impact of those protection strategies into the stability of the whole network. The objective of this study is to propose a methodology for the transient stability assessment of a simple but representative AC grid in case of DC fault. After validation of the methodology, some HVDC link protection criteria are defined in terms of the Critical Time to Return to Operation. These criteria will be helpful for the design of HVDC protection systems or for the sizing of future HVDC links in order to respect the constraints of the existing protection strategies.

【 授权许可】

CC BY