DocumentCode :
2531544
Title :
Wide area signal based optimal neurocontroller for a UPFC
Author :
Ray, Swakshar ; Venayagamoorthy, Ganesh K.
Author_Institution :
Univ. of Missouri Rolla, Rolla, MO
fYear :
2008
fDate :
20-24 July 2008
Firstpage :
1
Lastpage :
1
Abstract :
The design and implementation of an optimal neurocontroller for a flexible AC transmission device - the unified power flow controller (UPFC) is presented in this paper. Wide area signals in a power system are used to provide auxiliary control to a UPFC in order to achieve enhanced damping of system oscillations. The neurocontroller provides auxiliary signals to the real and reactive power references of a UPFC series inverter. The design of the optimal neurocontroller is based on an adaptive critic design (ACD) approach - the Heuristic dynamic programming (HDP). A system identifier, referred to as the wide area monitor (WAM), and a critic network (performance evaluator) are designed for optimizing the neurocontroller. Real-time implementation of the optimal UPFC neurocontroller for a multi-machine power system is carried out successfully on a digital signal processor (DSP). The power system is simulated on a real-time digital simulator (RTDS). The performance of this neurocontroller is compared with a conventional linear damping controller. Results show enhanced damping of both inter-area and intra-area modes in the power system under different operating conditions and disturbances with the neurocontroller. The improvement in the damping is also quantified using the Prony method.
Keywords :
digital signal processing chips; dynamic programming; flexible AC transmission systems; neurocontrollers; power transmission control; Prony method; UPFC; adaptive critic design; digital signal processor; flexible AC transmission device; heuristic dynamic programming; multimachine power system; optimal neurocontroller; reactive power references; real-time digital simulator; unified power flow controller; wide area monitor; wide area signal; Control systems; Damping; Load flow; Neurocontrollers; Optimal control; Power system control; Power system dynamics; Power system simulation; Power systems; Real time systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE
Conference_Location :
Pittsburgh, PA
ISSN :
1932-5517
Print_ISBN :
978-1-4244-1905-0
Electronic_ISBN :
1932-5517
Type :
conf
DOI :
10.1109/PES.2008.4596095
Filename :
4596095
Link To Document :
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