High Voltage Direct Current (HVDC) grid concept has recently been introduced as the next step to the point-to-point HVDC links to maximise the benefits of more power flow share, and reduce the impact of renewables intermittency. However, the integration of DC grid within existing AC systems is complex and very challenging. The compatibility between the two systems under different operating conditions needs to be fully understood. This will require sophisticated models and analysis of their behaviour using powerful tools. This paper presents a representative dynamic model of a hybrid AC-DC gird, and investigates the transient and dynamic interaction between the AC and DC grids under different fault conditions. The model represents a reduced AC UK power system interfaced to a detailed four-terminal DC grid. The developed mode is built in Real Time Digital Simulation (RTDS) using dual time steps simulation techniques.
|Publication status||Accepted/In press - 29 Nov 2016|
|Event||The 13th International Conference on AC and DC Power Transmission - Midland Hotel, Manchester, United Kingdom|
Duration: 14 Feb 2017 → 16 Feb 2017
|Conference||The 13th International Conference on AC and DC Power Transmission|
|Abbreviated title||ACDC 2017|
|Period||14/02/17 → 16/02/17|
- high voltage direct current HVDC
- power system dynamics
- real time digital simulation
- AC DC grid
- fault response
- dynamic interactions
Emhemed, A., Adam, G., Hong, Q., & Burt, G. (Accepted/In press). Studies of dynamic interactions in hybrid ac-dc grid under different fault conditions using real time digital simulation. Paper presented at The 13th International Conference on AC and DC Power Transmission, Manchester, United Kingdom.