Improvement of Reliability Indices and Costs in Distribution Systems Considering Multiple Scenarios Through Switch Reall
- PDF / 988,696 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 33 Downloads / 157 Views
Improvement of Reliability Indices and Costs in Distribution Systems Considering Multiple Scenarios Through Switch Reallocation Fábio Miranda Rodrigues1
· Leandro Ramos de Araujo1
· Débora Rosana Ribeiro Penido1
Received: 2 March 2020 / Revised: 23 September 2020 / Accepted: 26 September 2020 © Brazilian Society for Automatics--SBA 2020
Abstract This paper presents a method for improving indices and costs associated with reliability in radial distribution systems through switch placement using genetic algorithms. On this paper, the switch allocation problem will be solved with a method that allows novelties that can improve the quality of the solutions obtained. First, the possibility of switch allocation on both sides of each section of a feeder is proposed. Second, a method to quantify the non-supplied energy in terms of dollars per kWh of interruption is expanded, allowing a versatile way to simulate cases in which individual customers have different economic impacts when in situation of interrupted power delivery. The proposed algorithm is also versatile when additional restrictions are applied, such as fixing the number of switches or imposing SAIDI limits. Optimal switch locations are defined to improve restoration and reduce costs associated with reliability. Simulations in test and real feeders are performed, and the presented results show significant improvements. Keywords Distribution systems · Reliability · SAIFI · SAIDI · Optimization · Genetic algorithms
1 Introduction The goal of a power system is to deliver electric energy to its customers. This delivery must meet some power quality criteria that although vary from country to country, usually involve limits for acceptable power interruption durations from the final customers perspective. While a power system is basically composed of generation, transmission and distribution systems, it is reported that distribution systems account for up to 90% of all customer reliability problems (Billinton 1994 and Billinton 1996), which means that improving distribution reliability is the key to improving customer reliability. Distribution reliability is, therefore, one of the most important topics in the electric power industry due to its high impact on the cost of electricity and its high correlation with customer satisfaction (Brown 2009). A distribution system usually operates in radial topology, meaning that each component has a unique path to a power source. The radial topology is preferred because of simple protection and coordination schemes and reduced short
B 1
Leandro Ramos de Araujo [email protected] Department of Electrical Energy, Federal University of Juiz de Fora, Cidade Universitária, Juiz de Fora, MG, Brazil
circuit current (Lavorato et al. 2012). Constant search for better configuration methods of distribution networks and more efficient methods of protection of these networks have been made, with the aim of improving their overall reliability. Good reviews on this subject are present in Sultana et al. (2016) and Mishra et al. (20
Data Loading...
