Methodology of investments for medium voltage networks and improvement of reliability indices

• Published in: 18th International Conference and Exhibition on Electricity Distribution (CIRED 2005)
• Main Authors: Burgos, M.A, Antunes, A.U, Kagan, N, Oliveira, C.C.B, Gouvea, M.R, Vasconcelos, G.F
• Format: Conference Proceeding
• Language: English
• Published: Stevenage IEE 2005
• Subjects: Electrical contracting and installation; Plant engineering, maintenance and safety; Power system management, operation and economics; Power system planning and layout; Reliability; power system planning; reliability indices improvement; load representation; government policies; compact network installation; maintenance engineering; ANEEL; lightning-arrester; initial profitability rate of investment; investment; Brazilian Government Regulation Agency; network rebuilding; investments; aggregate investment planning methodology; power system economics; benefit-cost evaluation; electrical system expansion; tree trimming; power system reliability; maintenance actions; installation; Resolution 024/2000; recloser installation; medium voltage networks
• ISBN: 9780863415296; 0863415296
• DOI: 10.1049/cp:20051315

This paper presents an evaluation methodology of investments for medium voltage networks and improvement of reliability indices, as proposed by ANEEL (Brazilian Government Regulation Agency), in Resolution 024/2000. This methodology considers operation and maintenance actions as alternatives to expanding the electrical system. This objective is accomplished by using an aggregate investment planning methodology that proposes appropriate modeling concerning: the network and the load representation, the evaluation of the operational performance and the network expansion model. In this model the following operation and maintenance actions were included: tree trimming, compact network installation, recloser installation, network rebuilding, lightning-arrester (maintenance actions); and increasing of maintenance teams. These actions allow the improvement of reliability indices. The competition between expansion reinforcements, operation and maintenance actions is carried out by a benefit/cost evaluation, which was expressed by the initial profitability rate of investment (IPRl), limited to the annual budget. (5 pages)