Alternating iterative power flow algorithm for hybrid AC/DC networks containing DC grid based on voltage source converter

被引：11

作者：

State Key Laboratory of Electrical Insulation and Power Equipment , Xi'an ^{[1
]}

710049, China

不详 ^{[2
]}

461000, China

机构：

[1] State Key Laboratory of Electrical Insulation and Power Equipment (Xi'an Jiaotong University), Xi'an

[2] XJ Group Corporation, Xuchang

来源：

Dianli Xitong Zidonghue | / 7卷 / 7-13期

关键词：

AC/DC networks; Alternating iterative algorithm; DC grid; Power flow calculation; Voltage source converter;

D O I：

10.7500/AEPS20140514005

中图分类号：

学科分类号：

摘要：

With the steady development of voltage source converter (VSC) and parallel DC grid based on VSC, the future power grid may become hybrid AC/DC networks containing multi-DC buses, multi-DC lines and multi-DC loads. The steady-state model and control mode of VSC are analyzed, and the power flow model of AC/DC networks containing DC grid based on VSC is derived. Then the power flow solution for DC grid with different control modes is studied prior to proposing a generalized alternating iterative power flow algorithm. This algorithm decouples the AC grid and the DC grid according to different control modes of the VSC station. In each iteration of the algorithm, AC grid iteration follows the DC grid iteration. The algorithm will not stop calculating AC and DC alternatively until the DC grid, VSC station and AC grid are all convergent. Diverse control modes of DC grid, the constraint of variables and the change of VSC control mode are taken into consideration. Finally, with the modified IEEE 57-bus AC/DC networks, several simulation results clearly verified the feasibility and effectiveness of the proposed algorithm. ©2015 State Grid Electric Power Research Institute Press

引用

页码：7 / 13

页数：6

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