Capacitor loss reduction
Shunt capacitor banks are widely utilised in distribution networks to reduce power loss, improve voltage profile, release feeder capacity, compensate reactive power and correct power factor. In order to acquire maximum benefits, capacitor placement should be optimally done in electrical distribution networks.
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Capacitor placement in distribution systems for power loss reduction and voltage improvement: a new methodology
Shunt capacitor banks are widely utilised in distribution networks to reduce power loss, improve voltage profile, release feeder capacity, compensate reactive power and correct power factor. In order to acquire maximum benefits, capacitor placement should be optimally done in electrical distribution networks.
A flexible loss reduction formulation for simultaneous capacitor …
Shunt capacitors by compensating the part of reactive power demand of load causes a reduction in magnitude of feeders'' current and subsequent power losses of distribution network [4]. It is worth noting that energy loss has a direct impact on operational costs and system efficiency, as well as indirectly affecting the quality of delivered power to …
Optimal capacitor placement in distribution systems for power loss reduction …
This study presents a two-stage procedure to identify the optimal locations and sizes of capacitors in radial distribution systems. In first stage, the loss sensitivity analysis using two loss sensitivity indices (LSIs) is employed to select the most candidate capacitors locations. In second stage, the ant colony optimisation algorithm is …
Feeder reconfiguration and capacitor setting for loss reduction of …
Semantic Scholar extracted view of "Feeder reconfiguration and capacitor setting for loss reduction of distribution systems" by C. Su et al. DOI: 10.1016/S0378-7796(01)00124-9 Corpus ID: 109078616 Feeder reconfiguration and capacitor setting for loss reduction of
Power Loss Reduction in Buck Converter Based Active Power Decoupling Circuit
Active power decoupling (APD) circuits enable the use of long lifetime capacitors (film or ceramic capacitors) in single-phase power converters. Owing to the inclusion of the APD circuits, the literature reports 1.5%-1.8% drop in efficiency of single-phase converter at rated power. This reduction in conversion efficiency is one of the significant challenges in the …
Optimal Capacitor Placement to Distribution Transformers for Power Loss Reduction …
Deploying shunt capacitor banks in distribution systems can effectively reduce the power loss and provide additional benefits for system operation. In practice, the power loss on distribution transformers can account for a considerable portion of the overall loss. This paper proposes a method for optimal placement of capacitor banks to the …
Capacitor placement in radial distribution systems for loss reduction …
Bortignon, G.A., El-Hawary, M.E.: `A review of capacitor placementtechniques for loss reduction in primary feeders on distribution systems'', Proceedings of the Canadian conference on Electrical andcomputer engineering, 1995, 2, p. 684–687.
Power Capacitors for Power Converters. Analysis of Losses, …
There are 2 basic classes: Class 1 ceramic capacitors are highly thermally stable, and present low losses. Class 2 have large capacitance. The capacitance also changes with …
A Cross-Coupled Hybrid Switched-Capacitor Buck Converter …
Abstract: This article presents a hybrid switched-capacitor (SC) buck converter designed to optimize the reduction in inductor average current ( IL,DC) across a wide voltage …
Optimal capacitor placement for loss reduction
This paper presents an approach for optimal placement of capacitor banks in a real power network for the purpose of economic minimization of loss and enhancement of voltage. The objective function includes the cost of power losses and capacitors. Constraint includes voltage limit. The optimization problem is solved by the use of …
Gate drive losses reduction in switched-capacitor DC-DC converters
Switched-capacitor (SC) DC-DC converters have significant losses due to the gate drive of the switches that implement the converter. This study proposes to use a charge sharing technique that can greatly reduce these losses, thus improving the converter efficiency. First we present a theoretical analysis of the technique to highlight the benefits that can …
Power Loss Reduction Control for Modular Multilevel Converters …
A bleeding resistor is usually adopted to be parallel with the capacitor in the submodule (SM) to avoid static voltage imbalance caused by auxiliary power supply during start-up process of modular multilevel converters (MMCs). However, the bleeding resistor causes unnecessary power loss during normal operation. In this article, a resistor …
Distribution System Reconfiguration and Capacitor Placement for Loss Reduction …
Reconfiguration and Capacitor Setting for Loss Reduction of Distribution Systems, Elsevier, 2001, pp.97-102. L. Kuhn, Ant Colony Optimization for Continuous Spaces, Bachelor of Engineering, A thesis submitted to The Department of Information C.T ...
Capacitor Losses
Material Dielectric Constant Dissipation Factor Dielectric Absorption Temp Coefficient / C Notes Vacuum 1.0 0 zero 0 high power RF Air 1.0006 0 zero 0 RF & variables Teflon 2.0.0001 low-120 ppm high rel mil, high end audio Polystyrene 2.5.0001 low-150 ppm max
A flexible loss reduction formulation for simultaneous capacitor …
Efficiently reducing power losses involves various strategies such as opening normally closed switches and closing normally open tie-lines in distribution feeders, and optimally …
Subtraction-Mode Switched-Capacitor Converters With Parasitic Loss Reduction …
In this letter, subtraction-mode switched-capacitor (SC) converters are proposed and analyzed. When compared to a conventional summation-mode SC converter, some of the flying capacitors of the subtraction-mode SC converters have reduced voltage swings, and hence the switching loss of the corresponding positive- and negative-plate …
Optimal capacitor placement in distribution systems …
This paper presented an efficient multi-stage procedure based on two LSIs and the ACO algorithm to find the optimal locations …
Feeder reconfiguration and capacitor setting for loss reduction of …
That is, finding the optimal setting of switched capacitors to minimize losses. The early work on feeder reconfiguration for loss reduction is presented by Civanlar et al. [1]. In Ref. [2], Baran et al. defined the problem for loss reduction and load balancing as an
OPTIMAL CAPACITOR PLACEMENT FOR LOSS REDUCTION …
A new two-stage methodology using fuzzy and Harmony search algorithm (HSA) for the placement of capacitors on the primary feeders of the radial distribution systems with an objective to reduce the power losses and to improve the voltage profile is presented. This paper presents a new two-stage methodology using fuzzy and Harmony search algorithm …
Dielectric loss reduction and validation of P(VDF-HFP) films via …
The tri-layer structure can reduce the dielectric loss of lossy P(VDF-HFP) films to 0.005, meaningfully low for capacitor application. The computer simulation reveals the field and polarization distribution in various dielectric thickness ratios.
Subtraction-Mode Switched-Capacitor Converters With Parasitic Loss Reduction
In this letter, subtraction-mode switched-capacitor (SC) converters are proposed and analyzed. When compared to a conventional summation-mode SC converter, some of the flying capacitors of the subtraction-mode SC converters have reduced voltage swings, and hence the switching loss of the corresponding positive- and negative-plate parasitic …
Optimal reconfiguration and capacitor placement for power loss reduction of distribution system using improved binary particle swarm optimization ...
Optimal reconfiguration and capacitor placement are used to reduce power losses and keep the voltage within its allowable interval in power distribution systems considering voltage, current, and radial condition constraints. It is needed to solve two nonlinear discrete optimization problems simultaneously, so an intelligent algorithm is …
Loss Reduction in Distribution Networks a Case Study: Technical and Economic Analysis …
Several methods have been proposed to reduce losses, such as capacitor placement in medium and low voltage levels, reconfiguration in networks, increasing cross section in conductors, ...
Capacitor placement in radial distribution systems for loss reduction …
Reduction of I2R loss in distribution systems is very essential to improve the overall efficiency of power delivery. The I2R loss can be separated into two parts based on the active and reactive components of branch currents. The paper presents a method of ...
Optimal Capacitor Placement for Power Loss Reduction and …
This paper presents an optimal capacitor allocation method that uses the modified Honey Bee Mating Optimization Algorithm (HBMO) for primary distribution systems. In this …
Maximum loss reduction by optimal placement of capacitors on a …
This paper presents an implementation of a novel approach in radial distribution system for cost of loss reduction on an 11 kV distribution system consisting of 37 buses and 35 transmission lines. The study is carried out incorporating an appropriate load distribution model. This approach identifies an optimal location (node) of the capacitor by sequential …
Optimal capacitor placement for loss reduction
Abstract: This paper presents an approach for optimal placement of capacitor banks in a real power network for the purpose of economic minimization of …
Closed-Loop Discontinuous Modulation Technique for Capacitor Voltage Ripples and Switching Losses Reduction …
In this paper, a new discontinuous modulation technique is presented for the operation of the modular multilevel converter (MMC). The modulation technique is based on adding a zero sequence to the original modulation signals so that the MMC arms are clamped to the upper or lower terminals of the dc-link bus. The clamping intervals are …
Reconfiguration and Capacitor Placement for Loss Reduction of Distribution Systems …
This paper aims to study distribution system operations by the ant colony search algorithm (ACSA). The objective of this study is to present new algorithms for solving the optimal feeder reconfiguration problem, the optimal capacitor placement problem, and the problem of a combination of the two. The ACSA is a relatively new and powerful …
Optimal Allocation of Capacitors for Loss Reduction in …
In this work, a novel method is implemented to optimize the placement of capacitor bank in radial distribution systems (RDS) for reducing the system loss. It is a difficult task to ...
Capacitor placement in distribution systems for power loss …
Shunt capacitor banks are widely utilised in distribution networks to reduce power loss, improve voltage profile, release feeder capacity, compensate reactive power and correct …
Network reconfiguration and capacitor placement for power loss reduction …
It was found that the performance of distribution system reconfiguration and capacitor placement by using SSA-GA is better than the other methods in terms of the quality of solutions and the average elapsed time. This paper proposes electrical distribution system reconfiguration and capacitor placement for power loss reduction based on a …
Loss Reduction of Distribution Network by Optimal Reconfiguration and Capacitor …
This paper presents a method to minimize losses and improve the voltage profile of distribution networks by network reconfiguration and optimal capacitor placement using Cuckoo and Cultural meta-heuristic algorithms. This paper uses the technique of opening and closing the switches of the distribution network to change the structure of the …
Optimal capacitor placement for power loss reduction and voltage …
In distribution systems, shunt capacitors are used to reduce power losses, to improve voltage profile, and to increase the maximum flow through cables and transformers. This paper presents a new method to determine the optimal locations and economical sizing of fixed and/or switched shunt capacitors with a view to power losses reduction and …
Capacitor loss analysis method for power electronics converters
As far as the authors know, there is no measurement equipment that can be used to verify the measurement accuracy of the instantaneous capacitor loss, Q (n) in each switching period measured by the CLA.As an alternative method, the average capacitor loss, P Capacitor measured by the CLA, and the power loss, P Calculation calculated …
Economic energy loss reduction by optimal capacitor placement, …
Loss reduction methods Optimization methods and their usage in loss reduction (in case of economic optimization) Application of load estimation in energy loss reduction A fast energy loss calculation technique Considering harmonic limits in capacitor placement and conductor replacement is necessary Loops selection sequence affect the …
Capacitor loss analysis method for power electronics converters
The proposed system yields accurate capacitor loss directly measured from a real power electronics converter using current probe and voltage probe, and the …
Reconfiguration and capacitor placement for loss reduction of …
There are many means in reducing the active power loss of a distribution network, two important methods are feeder reconfiguration and capacitor placement. The minimum nodal voltage method (MNV) and genetic algorithms (GA) are chosen to solve the network reconfiguration problem and capacitor placement problem, respectively. These two …
Dielectric loss
In electrical engineering, dielectric loss quantifies a dielectric material''s inherent dissipation of electromagnetic energy (e.g. heat). [1] It can be parameterized in terms of either the loss angle δ or the corresponding loss tangent tan(δ).Both refer to the phasor in the complex plane whose real and imaginary parts are the resistive (lossy) component of an …