Energy loss reduction by critical switches

Chen, C.-S.; Cho, M.-Y.

doi:10.1109/61.252650

Cited by 130 publications

(57 citation statements)

References 13 publications

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“…Therefore, these were only applied to those utilities with a seasonal frequency. Consequently, there are few reports about specific experiences, as is the case of Chen and Cho [15] or Rajicic Taleskiand [16]. This resistance of utilities, is due to the fact the economic savings by reducing losses are not justified, due to two reasons: on the one hand, the risk involved for reasons of reliability, because they originate additional costs of operation and maintenance; on the other hand for the reduced life switching equipment.…”

Section: Discussion On the Economic And Operational Implications Omentioning

confidence: 95%

“…Likewise, the vector of current injections represents the different updated decision variables, which are related to the nodes and the automatic regulators. This generally results in heuristic methods (4)(5)(6)(7)(8)(9)(10) and (13)(14)(15).…”

Section: Mathematical Formulation and Methodologymentioning

confidence: 99%

“…The and values are included in the independent vector of the second member of (3), which in turn is updated by using (13) to (15) during the iterative process, until convergence is satisfied.…”

Section: ) Automatic Voltage Regulatorsmentioning

confidence: 99%

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Real-Time Monitoring and Economic Dispatch of Smart Distribution Grids: High Performance Algorithms for DMS Applications

Vargas

Samper

2012

IEEE Trans. Smart Grid

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Power distribution networks are changing its traditional operation paradigm, due to the introduction of the smart grid concept, which encompasses, among others, continuous demand variations, as well as continuous dispatch variations of the distributed generation units. The latter may be controllable or noncontrollable. This paradigm shift means to switch from a fixed radial operative topology network to a more dynamical configuration, which changes during the day and hour by hour. In this sense, the massive incorporation of new telecontrol and telecommunication technologies allows a dynamic operation in real-time (RT) of distribution networks. In order to achieve an optimal network operation, it is required a continuous RT monitoring, control and economic dispatch by means of a smart distribution management system (DMS). The named system must count on high performance algorithms and RT information systems. This paper presents three very efficient algorithms (in terms of speed, robustness and accuracy), which are: load estimation, ac power flow, and optimal reconfiguration for loss minimization. Furthermore, these algorithms have been tested in many real and large scale distribution networks for several utilities and have presented remarkable features for its implementation in a DMS for smart distribution grids (SDGs).

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Section: Discussion On the Economic And Operational Implications Omentioning

confidence: 95%

Section: Mathematical Formulation and Methodologymentioning

confidence: 99%

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Real-Time Monitoring and Economic Dispatch of Smart Distribution Grids: High Performance Algorithms for DMS Applications

Vargas

Samper

2012

IEEE Trans. Smart Grid

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“…They are then opened one by one until all the closed circuits are eliminated, and a radial system is obtained. Taking into account load variation, Chen and Cho [5] showed hourly reconfiguration benefits based on short-and long-term loss reduction. An optimal power flow model for minimal losses is applied by Shin [6].…”

Section: Introductionmentioning

confidence: 99%

Control Strategy for Power Loss Reduction considering Load Variation with Large Penetration of Distributed Generation

Liu

et al. 2017

Advances in Electrical Engineering

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With the increase of penetration of distribution in distribution systems, the problems of power loss increase and short-circuit capacity beyond the rated capacity of the circuit breaker will become more serious. In this paper, a methodology (modified BPSO) is presented for network reconfiguration which is based on the hybrid approach of Tabu search and BPSO algorithms to prevent the local convergence and to decrease the calculation time using double fitness to consider the constraints. Moreover, an average load simulated method (ALS method) considering load variation is proposed such that the average load value is used instead of the actual load for calculation. Finally, from a case study, the results of simulation certify that the approaches will decrease drastically the losses and improve the voltage profiles obviously; at the same time, the short-circuit capacity is also decreased into smaller shut-off capacity of the circuit breaker. The power losses will not be increased too much even if the short-circuit capacity constraint is considered; voltage profiles are better with the constraint of short-circuit capacity considered. The ALS method is simple and the calculation time is fast.

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“…But in [11] Chen presents a method to determine optimal switching criterion for each four season and compute switching cost to find cost benefit result from switching operation. Moreover, in [12] Yin presents a multiobjective operation optimization problem considering time-varying effects and switching costs.…”

Section: Introductionmentioning

confidence: 99%

Load profile based determination of distribution feeder configuration by dynamic programming

shariatkhah

Haghifam

Arefi

2011

2011 IEEE Trondheim PowerTech

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Abstract--This paper presents a new method to determine feeder reconfiguration scheme considering variable load profile. The objective function consists of system losses, reliability costs and also switching costs. In order to achieve an optimal solution the proposed method compares these costs dynamically and determines when and how it is reasonable to have a switching operation. The proposed method divides a year into several equal time periods, then using particle swarm optimization (PSO), optimal candidate configurations for each period are obtained. System losses and customer interruption cost of each configuration during each period is also calculated. Then, considering switching cost from a configuration to another one, dynamic programming algorithm (DPA) is used to determine the annual reconfiguration scheme. Several test systems were used to validate the proposed method. The obtained results denote that to have an optimum solution it is necessary to compare operation costs dynamically.

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Energy loss reduction by critical switches

Cited by 130 publications

References 13 publications

Real-Time Monitoring and Economic Dispatch of Smart Distribution Grids: High Performance Algorithms for DMS Applications

Real-Time Monitoring and Economic Dispatch of Smart Distribution Grids: High Performance Algorithms for DMS Applications

Control Strategy for Power Loss Reduction considering Load Variation with Large Penetration of Distributed Generation

Load profile based determination of distribution feeder configuration by dynamic programming

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