Loss minimization of distribution feeders

Journal Article · Sat Apr 01 04:00:00 EST 1989 · IEEE Trans. Power Del.; (United States)

DOI:https://doi.org/10.1109/61.25615· OSTI ID:6308365

Liu, C C; Lee, S J; Vu, K

Determining open switch positions for the minimum-loss configuration of a radial distribution system is a discrete optimization problem. This paper presents a global optimality condition of the problem and two algorithms: one is based on the uniformly distributed load model and the other on the concentrated current (or power) demand model. The derivation of the optimality condition relies on a concept of basic current profiles of feeder sections and a transformation of the optimization problem. In the first algorithm, a closed form of the minimum-loss open point of a feeder pair can be found since the loss function is piece-wise parabolic. The algorithm obtains the optimal solution when the minimum is obtained for every feeder pair. In the second algorithm, a similar procedure is performed by moving open points, one at a time, from an actual switch position to another until no further loss reduction can be achieved. The proposed algorithms can be utilized as an on-line aid to distribution system operators.

• Research Organization: Univ. of Washington, FT-10, Seattle, WA (US)
• OSTI ID: 6308365
• Journal Information: IEEE Trans. Power Del.; (United States), Journal Name: IEEE Trans. Power Del.; (United States) Vol. 4:2; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

200302* -- Power Transmission & Distribution-- DC Systems-- (1989-)
24 POWER TRANSMISSION AND DISTRIBUTION
29 ENERGY PLANNING, POLICY, AND ECONOMY
296002 -- Energy Planning & Policy-- Electric Power Transmission & Distribution-- (-1989)
ALGORITHMS
DEMAND
ENERGY DEMAND
ENERGY LOSSES
ENERGY MODELS
LOAD MANAGEMENT
LOSSES
MANAGEMENT
MATHEMATICAL LOGIC
MINIMIZATION
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OPTIMIZATION
POWER DISTRIBUTION SYSTEMS
POWER LOSSES