An Electromechanical Transient Simulation Platform of Hybrid Power Grids With MMC-HVDC Transmission for Transient Stability Evaluation

2020 ◽  
Author(s):  
Zehui Lin ◽  
Yang Liu ◽  
Huaizhi Wang
Keyword(s):  
Transient Stability ◽  
Power Grids ◽  
Transient Simulation ◽  
Simulation Platform ◽  
Stability Evaluation ◽  
Hvdc Transmission ◽  
Hybrid Power

A Novel Multilevel Solid-State Transformer for Hybrid Power Grids

2021 ◽  
Author(s):  
Vitor Monteiro ◽  
Delfim Pedrosa ◽  
Sergio Coelho ◽  
Tiago Sousa ◽  
Luis Machado ◽  
...  
Keyword(s):  
Solid State ◽  
Power Grids ◽  
Solid State Transformer ◽  
Hybrid Power

scholarly journals Transient stability analysis of power grids with admissible and maximal robust positively invariant sets

2020 ◽  
Vol 68 (12) ◽  
pp. 1011-1021
Author(s):  
Tim Aschenbruck ◽  
Willem Esterhuizen ◽  
Stefan Streif
Keyword(s):  
Power Systems ◽  
Transient Stability ◽  
Energy Transition ◽  
Power Grids ◽  
Invariant Sets ◽  
Admissible Sets ◽  
Major Fault ◽  
Bounded Disturbances ◽  
One Machine ◽  
Positively Invariant Sets

AbstractThe energy transition is causing many stability-related challenges for power systems. Transient stability refers to the ability of a power grid’s bus angles to retain synchronism after the occurrence of a major fault. In this paper a set-based approach is presented to assess the transient stability of power systems. The approach is based on the theory of barriers, to obtain an exact description of the boundaries of admissible sets and maximal robust positively invariant sets, respectively. We decompose a power system into generator and load components, replace couplings with bounded disturbances and obtain the sets for each component separately. From this we deduce transient stability properties for the entire system. We demonstrate the results of our approach through an example of one machine connected to one load and a multi-machine system.

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