Energy loss reduction by critical switches

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.252650· OSTI ID:6089477

Chen, C S; Cho, M Y ^[1]

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1. Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China). Dept. of Electrical Engineering

This paper presents a systematic method to derive an optimal switching plan to achieve energy loss minimization for short term and long term operation of distribution systems. The short term optimal switching criterion is developed by binary integer programming with branch and bound technique. A overall optimization problem is formulated for the optimal switching operation. It is further divided into several subproblems to find the largest energy loss reduction among all possible switching operation between two feeders. A quick method is applied to estimate the largest loss reduction for each feeder-pairs in the distribution system during short term switching operation. In this paper, the composite load profile of each feeder is derived by the field test over one year time period. According to the typical load patterns of each customer type, the hourly loading of each service section can be simulated more accurately. After determining the hourly optimal network configuration by taking into account the typical daily load patterns for all the distribution feeders, the long term optimal switching criterion for each season is derived and the corresponding critical switches, which should be operated for energy loss reduction as season changed from summer to winter and vice versa, are also determined. During the computer simulation, the installation and operation cost of sectionalizing switches are included in the objective function as actual cost so that the results obtained will be more practical. A practical Taipower distribution system is selected for computer simulation to demonstrate the efficiency and practicality of the proposed method to reduce the energy loss by operating the critical switches derived.

• OSTI ID: 6089477
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:3; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
COMPUTERIZED SIMULATION
ENERGY CONSERVATION
ENERGY LOSSES
HOURLY VARIATIONS
LOAD ANALYSIS
LOSSES
POWER DISTRIBUTION SYSTEMS
POWER LOSSES
POWER SUBSTATIONS
SIMULATION
VARIATIONS