Development of an optimal solution for system contingency in an interconnected power system

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5044501

Sheissi, G

The system security analysis for a portion of a large interconnected power system under various contingencies for the rest of the system often requires on-line application. One approach is to provide a detailed model for the study portion (internal system) and represent the rest of the system (extend system) by an equivalent model. The on-line equivalent model which reflects the continuous change of the external system is obtained from the real time data of the internal system using state estimation. A decoupled state-estimation program that requires a minimum number of internal system measurements as its input is presented. This decoupled state estimation uses a factorization method in conjunction with sparsity technique to obtain the state variables of the internal system due to the change which has taken place in the external system. These state variables are used to obtain the real time measurements corresponding to the tie points of the internal system with the external system. These measurements are then applied to the decoupled-like load flow scheme to be used to update the equivalent model of the external system which has been evaluated at some known condition using an REI network reduction scheme. The equivalent model obtained from the known condition considers a scheme which avoids the low voltage value at this model's nodes.

• Research Organization: Mississippi State Univ., State College (USA)
• OSTI ID: 5044501
• Country of Publication: United States
• Language: English

Related Subjects

200300 -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
29 ENERGY PLANNING, POLICY, AND ECONOMY
296002* -- Energy Planning & Policy-- Electric Power Transmission & Distribution-- (-1989)
EMERGENCY PLANS
ENERGY SYSTEMS
INTERCONNECTED POWER SYSTEMS
LOAD MANAGEMENT
MANAGEMENT
MATHEMATICAL MODELS
OPTIMIZATION
POWER SYSTEMS
REAL TIME SYSTEMS
SECURITY