Title :
Smart RAS (Remedial Action Scheme)
Author :
Wang, Shimo ; Rodriguez, George
Author_Institution :
Southern California Edison, Rosemead, CA, USA
Abstract :
Remedial Action Schemes (RAS) have been increasingly used by utilities to mitigate instability problems following the loss of one or more transmission lines on a transmission corridor to prevent the power system from out-of-step conditions that may result in cascading system-wide outages. To resolve existing RAS limitations caused by growth of intermittent renewable generation and load mutability, a Smart RAS is proposed. Different from most of the existing logic variable triggered RAS, the Smart RAS takes synchrophasor-measured real power of tie lines between two grid areas and is triggered using an AIEM (Adaptive Impact Energy Method) application. Due to the special features of this no-parameter model and no-setting criteria, AIEM will respond faster and will adapt to a variety of situations in real time. The simulations demonstrate the validity of the model and criteria, as well as the efficiency of prediction and mitigation of instability. A current SCE C-RAS (Centralized RAS) project will provide the real time platform for a Smart RAS.
Keywords :
power system control; power system protection; power system reliability; power system transient stability; power transmission lines; smart power grids; AIEM application; adaptive impact energy method; current SCE C-RAS project; intermittent renewable generation; load mutability; power system out-of-step conditions; real time platform; remedial action schemes; smart RAS; synchrophasor-measured real power; system-wide outages; transmission lines; Load flow; Logic; Mesh generation; Power generation; Power system interconnection; Power system protection; Power system reliability; Power systems; Power transmission lines; Propagation losses; C-RAS; Intermittent Renewable Generation; Power system control; Power system protection; Power system stability; Power system transient stability; Smart Grid; Smart RAS; Synchronized phasor measurements; Synchrophasor measurements;
Conference_Titel :
Innovative Smart Grid Technologies (ISGT), 2010
Conference_Location :
Gaithersburg, MD
Print_ISBN :
978-1-4244-6264-3
Electronic_ISBN :
978-1-4244-6333-6
DOI :
10.1109/ISGT.2010.5434735