DocumentCode :
1704670
Title :
A system integrity protection scheme for transient instability using synchronized measurement
Author :
Xiaochen Du ; Crossley, Peter
Author_Institution :
Univ. of Manchester, Manchester, UK
Volume :
3
fYear :
2011
Firstpage :
2018
Lastpage :
2023
Abstract :
This paper introduces a new system integrity protection scheme (SIPS) incorporated synchronous measurement and control actions of thyristor controlled series compensation (TCSC). To achieve optimal control strategy without compromising response time, a security guideline is developed during offline conditions. E-SIME is utilized to calculate the OMIB equivalent model and stability margin for multiple fault scenarios. The corresponding control actions are obtained by offline simulations. The fault conditions and the control actions required are taken as a learning set and sent to an automatic learning (AL) approach. The output of the AL approach is a security guideline. During online monitoring and control, the OMIB equivalent system and stability margin will be calculated every sampling period using synchronized measurement information. Once a fault condition is detected, the security guideline will directly provide optimal solution to deal with the extreme conditions. The TCSC is modeled as a variable capacitor, which can be switched in instantaneously and the compensation level can be flexibly adjusted. The close loop control, providing continuous and accurate control, is adopted in this SIPS This method was tested in two-area system, showing promising results.
Keywords :
closed loop systems; fault diagnosis; learning systems; optimal control; power capacitors; power system control; power system measurement; power system protection; power system security; power system transient stability; AL approach; E-SIME; OMIB equivalent model; SIPS; TCSC; accurate control; automatic learning approach; close loop control; continuous control; control actions; fault condition; multiple fault scenarios; offline conditions; online monitoring; optimal control strategy; response time; sampling period; security guideline; stability margin; synchronized measurement information; system integrity protection scheme; thyristor controlled series compensation; transient instability; two-area system; variable capacitor; Power capacitors; Thyristors; E-SIME; OMIB; automatic learning; stability margin; system integrity protection; transient stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced Power System Automation and Protection (APAP), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-9622-8
Type :
conf
DOI :
10.1109/APAP.2011.6180838
Filename :
6180838
Link To Document :
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