TY - CHAP
T1 - Rotor Angle Stability of Hybrid AC/DC Power Grids
AU - Meegahapola, Lasantha
AU - Bu, Siqi
AU - Gu, Mingchen
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2022/8
Y1 - 2022/8
N2 - The utilisation of HVDC transmission has brought complex dynamics to the conventional AC power grids dominated by the synchronous generator. Rotor angle stability, as one of the major dynamic concerns, has been considerably affected by the frequent interactions with different HVDC systems. This chapter provides a comprehensive overview on the concepts, and main features and causes of two rotor angle stability issues. Transient stability of hybrid AC/DC networks is investigated by introducing fundamental concepts associated with transient stability evaluation. Subsequently, how the transient stability phenomenon affected by hybrid AC/DC power networks is exemplified with exemplar case studies. The small-signal modelling (i.e., linearised state-space model) of the hybrid AC/DC power grids covering both LCC and VSC based HVDC systems and relevant control schemes is introduced. The general small-disturbance stability analysis concerning the critical oscillation and damping mechanism as affected by HVDC systems is presented by using the eigenvalue analysis and eigenvalue sensitivity analysis with respect to some key system parameters. The influence of LCC and VSC based HVDC systems on the synchronising and damping torque of the synchronous generator is studied. Time domain simulations of hybrid AC/DC power grids are also provided for validation purposes in this chapter.
AB - The utilisation of HVDC transmission has brought complex dynamics to the conventional AC power grids dominated by the synchronous generator. Rotor angle stability, as one of the major dynamic concerns, has been considerably affected by the frequent interactions with different HVDC systems. This chapter provides a comprehensive overview on the concepts, and main features and causes of two rotor angle stability issues. Transient stability of hybrid AC/DC networks is investigated by introducing fundamental concepts associated with transient stability evaluation. Subsequently, how the transient stability phenomenon affected by hybrid AC/DC power networks is exemplified with exemplar case studies. The small-signal modelling (i.e., linearised state-space model) of the hybrid AC/DC power grids covering both LCC and VSC based HVDC systems and relevant control schemes is introduced. The general small-disturbance stability analysis concerning the critical oscillation and damping mechanism as affected by HVDC systems is presented by using the eigenvalue analysis and eigenvalue sensitivity analysis with respect to some key system parameters. The influence of LCC and VSC based HVDC systems on the synchronising and damping torque of the synchronous generator is studied. Time domain simulations of hybrid AC/DC power grids are also provided for validation purposes in this chapter.
UR - http://www.scopus.com/inward/record.url?scp=85136696300&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-06384-8_4
DO - 10.1007/978-3-031-06384-8_4
M3 - Chapter in an edited book (as author)
AN - SCOPUS:85136696300
T3 - Power Systems
SP - 89
EP - 129
BT - Power Systems
PB - Springer Science and Business Media Deutschland GmbH
ER -