Journal ArticleDOI
A combined artificial neural network-fuzzy dynamic programming approach to reactive power/voltage control in a distribution substation
Yuan-Yih Hsu,Feng-Chang Lu +1 more
TLDR
In this paper, an artificial neural network (ANN) is designed to reach a preliminary dispatch schedule for the capacitor and load tap changer (LTC) positions for the 24 hours in the next day.Abstract:
Reactive power/voltage control in a distribution substation is investigated in this work. The purpose is to determine proper capacitor on/off status and suitable load tap changer (LTC) positions for the 24 hours in the next day. To reach this goal, an artificial neural network (ANN) is designed to reach a preliminary dispatch schedule for the capacitor and LTC. The inputs to the ANN are main transformer real power and reactive power and primary and secondary bus voltages and the outputs are the desired capacitor on/off status and LTC tap positions. The preliminary dispatch schedule is further refined by fuzzy dynamic programming in order to reach the final schedule. To demonstrate the effectiveness of the proposed method, reactive power/voltage control is performed on a distribution substation in Taipei, Taiwan. Results from the example show that a proper dispatch schedule for capacitor and LTC can be reached by the proposed method in a very short period.read more
Citations
More filters
Journal ArticleDOI
Optimal Operation of Distribution Feeders in Smart Grids
TL;DR: A novel method for solving the three-phase DOPF model by transforming the mixed-integer non linear programming problem to a nonlinear programming problem is proposed which reduces the computational burden and facilitates its practical implementation and application.
Journal ArticleDOI
Reactive Power and Voltage Control in Distribution Systems With Limited Switching Operations
TL;DR: In this paper, a nonlinear interior-point method and discretization penalties are proposed for the solution of mixed-integer nonlinear programming (MINLP) problem associated with reactive power and voltage control in distribution systems to minimize daily energy losses, with time-related constraints being considered.
Journal ArticleDOI
Bibliography on the fuzzy set theory applications in power systems (1994-2001)
TL;DR: This paper presents a comprehensive set of references on fuzzy set theory applications in power systems and indicates applicability of fuzzy systems to power systems for wider operating conditions under uncertainties.
Journal ArticleDOI
A heuristic and algorithmic combined approach for reactive power optimization with time-varying load demand in distribution systems
TL;DR: In this article, a heuristic and algorithmic combined approach is proposed for reactive power optimization with time-varying load demand in distribution systems, where the objective is to determine the proper setting values of capacitor banks and transformer taps for the 24 hours in the next day.
Journal ArticleDOI
Mixed-integer second-order cone programing model for VAR optimisation and network reconfiguration in active distribution networks
TL;DR: In this paper, the authors presented a comprehensive optimisation model that combines reactive power (VAR) optimisation and network reconfiguration to minimize power losses and eliminate voltage violations, which can be used as a basic analysis tool for active distribution networks operation schedule or planning.
References
More filters
Book ChapterDOI
Learning internal representations by error propagation
TL;DR: This chapter contains sections titled: The Problem, The Generalized Delta Rule, Simulation Results, Some Further Generalizations, Conclusion.
Book
Learning internal representations by error propagation
TL;DR: In this paper, the problem of the generalized delta rule is discussed and the Generalized Delta Rule is applied to the simulation results of simulation results in terms of the generalized delta rule.
Journal ArticleDOI
Optimal capacitor placement on radial distribution systems
M.E. Baran,F.F. Wu +1 more
TL;DR: In this article, the problem of capacitors placement on a radial distribution system is formulated and a solution algorithm is proposed, where the location, type, and size of the capacitors, voltage constraints, and load variations are considered.
Journal ArticleDOI
Short-term load forecasting
TL;DR: In this paper, the authors discuss the state of the art in short-term load forecasting (STLF), that is, the prediction of the system load over an interval ranging from one hour to one week.
Book
Electric power distribution system engineering
TL;DR: In this paper, the authors discuss the role of the computer in distribution planning and the central role of data acquisition in the distribution planning process, and discuss the relationship between the load and loss factors of a distribution system.
Related Papers (5)
Dispatch of Main Transformer ULTC and Capacitors in a Distribution System
Ruey-Hsun Liang,Chen-Kuo Cheng +1 more