{'fraction_non_alphanumeric': 0.0247074122236671, 'fraction_numerical': 0.0039011703511053317, 'mean_word_length': 5.111111111111111, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Electromechanical transient modeling of AC/DC hybrid system incorporating VSC based DC grid

In this paper, the electromechanical model of VSC HVDC-integrated AC/DC hybrid system is established. The VSC station model is comprised of the physical model and the control model. In the mathematical control model, the inner current-loop regulator, the outer loop regulator, the modulation and the phase-lock loop are taken into consideration. The proposed model is validated through the simulation of a 5-port VSC-HVDC integrated IEEE 39 system with DIgSILENT. The transient-stable closed-loop control algorithm is utilized and the stability study is performed, demonstrating the accuracy of the proposed model and the effectiveness of the control scheme in hybrid systems.