Application of a Three-Phase Load Estimation in a Real Distribution Feeder

Author(s)

Avelino, Luana L. ; Massignan, Julio A. D. ; London, Joao B. A., Jr. ; de Oliveira, Alexandre V. ; IEEE

• Document type: Journal article
• Source: 2017 IEEE URUCON; v. N/A, p. 4-pg., 2017-01-01.

Abstract

Recently a practical and efficient Real Time Load Estimator (RTLE) was developed. Using only off-line information the RTLE provides off-line estimation of distribution system (DS) transformer loads and a measure of uncertainty of the estimation. It also refines these estimates by processing real-time measurements via a computationally efficient load flow algorithm, which uses the data structure called Node-Depth Encoding. To provide load values in a tractable computing time for real time DS applications, such as service restoration, all the development of the RTLE was conducted considering the trade-off between precision and computational efficiency. Hence, RTLE considers the balanced single-phase network model. To obtain more accurate load estimates this paper proposes a Real Time Three-Phase Load Estimator (RT-TPLE) for radial, unbalanced and asymmetric distribution feeders. Actually, this paper extends the RTLE to consider the three-phase network model. The RT-TPLE is confirmed on computation simulations performed on the real DS feeder of Ribeirao Preto city, Brazil. The performance of both the RTLE and the RT-TPLE are compared. (AU)

• FAPESP's process: 16/19646-6 - Three-phase Multiarea state estimator for large scale distribution systems
• Grantee: Julio Augusto Druzina Massignan
• Support Opportunities: Scholarships in Brazil - Doctorate