Open AccessHolomorphic embedding approach for VSC‐based AC/DC power flow
Author(s) -
Huang Ying,
Ai Xiaomeng,
Fang Jiakun,
Yao Wei,
Wen Jinyu
Publication year - 2020
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2020.1227
Subject(s) - embedding , control theory (sociology) , computer science , voltage source , power (physics) , holomorphic function , flexibility (engineering) , electric power system , topology (electrical circuits) , voltage , mathematical optimization , mathematics , engineering , electrical engineering , control (management) , physics , mathematical analysis , statistics , quantum mechanics , artificial intelligence
With the rapid development of voltage source converter based high‐voltage direct current, power flow analysis becomes increasingly important for AC/DC hybrid systems. This study extends the holomorphic embedding (HE) method to the VSC‐based AC/DC power flow problem. With an appropriate embedding technique, a general embedded model is established for AC/DC power flow with VSCs, which can not only preserve the deterministic property of HE that enables it to derive the desired solution in an explicit manner but also flexibly accommodate various bus types, VSC configurations, control strategies and operating conditions. Moreover, the sparsity of the recursive matrix in power series calculations and the introduction of the iterative calculation of the inverse matrix (ICIM) to rational approximants contribute to the high computational efficiency of the model. The proposed method is shown to be feasible and efficient by illustrative cases and is further extended to multi‐terminal (VSC‐MTDC) configurations to verify its flexibility.