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1. (WO2013152482) MASTER CONTROL METHOD FOR A SERIES MTDC SYSTEM AND ELEMENT THEREOF

Pub. No.:    WO/2013/152482    International Application No.:    PCT/CN2012/073796
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Thu Apr 12 01:59:59 CEST 2012
IPC: H02J 3/36
Applicants: ABB TECHNOLOGY LTD.
YAO, Dawei
YANG, Xiaobo
YUE, Chengyan
Inventors: YAO, Dawei
YANG, Xiaobo
YUE, Chengyan
Title: MASTER CONTROL METHOD FOR A SERIES MTDC SYSTEM AND ELEMENT THEREOF
Abstract:
A master control method for a series multi-terminal direct current (MTDC) system and elements thereof. The method comprises: choosing one terminal as a current setting terminal (CST) and defining other terminals as voltage setting terminals (VST) (302); configuring a current reference of the series MTDC system as the input of the CST converter, generating current values for each VST converter (304) based on the current reference and different margins thereof respectively and making the minimum value of current reference in the rectifier side larger than the maximum value of current reference in the inverter side (306). The method for series MTDC system and elements thereof can regulate and optimize the active power and reactive power, reduce the power losses, and control the distribution of the reactive power.