Open Science Research Excellence

Perumal Nallagownden

Publications

2

Publications

2
1270
System Reliability by Prediction of Generator Output and Losses in a Competitive Energy Market
Abstract:
In a competitive energy market, system reliability should be maintained at all times. Power system operation being of online in nature, the energy balance requirements must be satisfied to ensure reliable operation the system. To achieve this, information regarding the expected status of the system, the scheduled transactions and the relevant inputs necessary to make either a transaction contract or a transmission contract operational, have to be made available in real time. The real time procedure proposed, facilitates this. This paper proposes a quadratic curve learning procedure, which enables a generator-s contribution to the retailer demand, power loss of transaction in a line at the retail end and its associated losses for an oncoming operating scenario to be predicted. Matlab program was used to test in on a 24-bus IEE Reliability Test System, and the results are found to be acceptable.
Keywords:
Deregulation, learning coefficients, reliability,prediction, competitive energy market.
1
12948
Newton-Raphson State Estimation Solution Employing Systematically Constructed Jacobian Matrix
Abstract:
Newton-Raphson State Estimation method using bus admittance matrix remains as an efficient and most popular method to estimate the state variables. Elements of Jacobian matrix are computed from standard expressions which lack physical significance. In this paper, elements of the state estimation Jacobian matrix are obtained considering the power flow measurements in the network elements. These elements are processed one-by-one and the Jacobian matrix H is updated suitably in a simple manner. The constructed Jacobian matrix H is integrated with Weight Least Square method to estimate the state variables. The suggested procedure is successfully tested on IEEE standard systems.
Keywords:
State Estimation (SE), Weight Least Square (WLS),Newton-Raphson State Estimation (NRSE), Jacobian matrix H.