DocumentCode :
1469401
Title :
Development of a hybrid margin angle controller for HVDC continuous operation
Author :
Sato, M. ; Yamaji, K. ; Sekita, M. ; Amano, M. ; Nishimura, M. ; Konishi, H. ; Oomori, T.
Author_Institution :
Kansai Electr. Power Co. Inc., Osaka, Japan
Volume :
11
Issue :
4
fYear :
1996
fDate :
11/1/1996 12:00:00 AM
Firstpage :
1792
Lastpage :
1798
Abstract :
The objective of this paper is to present a new hybrid margin angle control method for HVDC continuous operation under AC system fault conditions. For stable continuous operation of HVDC systems, the margin angle controller must be designed to maintain the necessary margin angle to avoid commutation failures. The proposed method uses the open loop margin angle controller (MAC) as the basic controller, and adds output from the closed loop MAC to correct the control angle. A fast voltage detection algorithm is used for open loop control, and margin angle reference correction using harmonics detection for closed loop control are also developed. The combination of open and closed loop control provides quick responses when faults occur with stable and speedy recovery after fault clearance. The effectiveness of the developed controller is confirmed through EMTP digital simulations and also with the experiments using an analogue simulator
Keywords :
HVDC power transmission; closed loop systems; control system analysis computing; control system synthesis; power system analysis computing; power system control; power system harmonics; software packages; AC system fault conditions; EMTP software; HVDC power systems; closed loop control; commutation failures; computer simulation; continuous power system operation; control design; control simulation; fault response; harmonics detection; hybrid margin angle controller; open loop control; voltage detection algorithm; Analog-digital conversion; Control systems; Detection algorithms; Digital simulation; EMTP; HVDC transmission; Open loop systems; Power system harmonics; Power system stability; Voltage control;
fLanguage :
English
Journal_Title :
Power Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8950
Type :
jour
DOI :
10.1109/59.544644
Filename :
544644
Link To Document :
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