TY - GEN

T1 - Security constrained emergency voltage stabilization

T2 - 47th IEEE Conference on Decision and Control, CDC 2008

AU - Jin, L.

AU - Kumar, R.

AU - Elia, N.

PY - 2008

Y1 - 2008

N2 - Voltage instability impacts power system transfer limits and its reliability. This paper presents an approach to determine a voltage control scheme based on the Model Predictive Control (MPC) theory. MPC is used to develop an optimal control strategy, consisting of a sequence of amounts of the shunt capacitors to switch. The resulting control strategy prevents voltage instability and maintains a desired amount of post-transient voltage stability margin (an index of system security). The objective of optimization is to minimize a weighted sum of the cumulative voltage deviations and the cumulative cost of capacitive controls. The effect of the capacitive control on voltage behavior is computed by means of trajectory sensitivity. The sensitivity of voltage stability margin with respect to the capacitive control is used to construct a security constraint for post-fault operation in the MPC formulation. The efficacy of the proposed approach is illustrated through applications to the 39-bus New England system for preventing voltage collapse.

AB - Voltage instability impacts power system transfer limits and its reliability. This paper presents an approach to determine a voltage control scheme based on the Model Predictive Control (MPC) theory. MPC is used to develop an optimal control strategy, consisting of a sequence of amounts of the shunt capacitors to switch. The resulting control strategy prevents voltage instability and maintains a desired amount of post-transient voltage stability margin (an index of system security). The objective of optimization is to minimize a weighted sum of the cumulative voltage deviations and the cumulative cost of capacitive controls. The effect of the capacitive control on voltage behavior is computed by means of trajectory sensitivity. The sensitivity of voltage stability margin with respect to the capacitive control is used to construct a security constraint for post-fault operation in the MPC formulation. The efficacy of the proposed approach is illustrated through applications to the 39-bus New England system for preventing voltage collapse.

KW - Model predictive control

KW - Power system

KW - Switching control

KW - Trajectory sensitivity

KW - Voltage stability margin

KW - Voltage stabilization

UR - http://www.scopus.com/inward/record.url?scp=62949125372&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=62949125372&partnerID=8YFLogxK

U2 - 10.1109/CDC.2008.4739120

DO - 10.1109/CDC.2008.4739120

M3 - Conference contribution

AN - SCOPUS:62949125372

SN - 9781424431243

T3 - Proceedings of the IEEE Conference on Decision and Control

SP - 2469

EP - 2474

BT - Proceedings of the 47th IEEE Conference on Decision and Control, CDC 2008

Y2 - 9 December 2008 through 11 December 2008

ER -