Hybrid HVDC system for power transmission to island networks

• Published in: IEEE transactions on power delivery Vol. 19; no. 4; pp. 1884 - 1890
• Main Authors: Andersen, B.R., Lie Xu
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-10-2004; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Compensators; Control systems; Converters; DC generators; Direct current; Direct current networks; Dynamical systems; Dynamics; Electrical engineering. Electrical power engineering; Electrical power engineering; Electronics; Exact sciences and technology; HVDC transmission; Hybrid power systems; Mesh generation; Networks; Other multijunction devices. Power transistors. Thyristors; Performance loss; Power electronics, power supplies; Power networks and lines; Power transmission; Robustness; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Static VAr compensators; Synchronous generators; Thyristors; Users connections and in door installation; Performance evaluation; converter; Control synthesis; HVdc transmission; Hybrid system; HVDC power transmission; Static reactive compensator; Static VAr compensators; Transportation network; Static synchronous compensator; static VAR compensator (STATCOM); HVDC systems; Dynamic response; Control design; Control system; Thyristor; Connection; DC-DC power convertors; Operating conditions; Synchronous compensator; Voltage source converter; Power consumption; Electrical network; System simulation; Line losses; High voltage line; Power transmission line
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/TPWRD.2004.835031

A hybrid system, comprising a line commutated thyristor high-voltage direct current (HVdc) converter and a static VAR compensator, is proposed in this paper for the connection of networks with no synchronous generation to a main grid. The proposed system combines the robust performance and low capital cost and power loss of a line-commutated HVdc converter, with the fast dynamic performance of a voltage-source-converter (VSC)-based transmission system. The paper describes the principles and control strategies of the proposed system. PSCAD/EMTDC simulations are presented to demonstrate the robust performance and to validate the proposed system during various operating conditions such as black-start, variations of load or generation, and ac fault conditions.