Estimating methodology for a large regional application of conservation voltage reduction

Steese, J.G. De; Merrick, S.B.; Kennedy, B. W.

doi:10.1109/59.65915

Cited by 39 publications

(8 citation statements)

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“…Another paper from the literature [10] also describes the effect of adjusting the distribution voltage in smartgrid environments. In one study [11], CVR factors were estimated by applying supply curves, and the energy saving costs were subsequently calculated. In another study [12], energy saving by voltage reduction and its economic implications were evaluated.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

Shim

Yun

et al. 2017

Energies

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This paper describes a method to estimate conservation voltage reduction (CVR) factors using data measured in power distribution systems. A direct method is proposed to estimate CVR factors using only data measured at the moment of the transformer tap change. The mean absolute deviation (MAD) direct method is proposed to consider direct methods and load variations. The proposed methods do not necessitate intentional tap changes for testing purposes. Instead, the voltage and load changes that occur when the tap changes, for voltage regulation purposes, are measured and utilized in the CVR factor calculation. The proposed methods were tested using data obtained from the Korea Electric Power Corporation (KEPCO) system, and the results revealed that CVR factors for both active power and reactive power could be estimated using data measured in power distribution systems. Results of the CVR factor estimation for the active power revealed that the highest CVR factors occurred in winter, during which a large quantity of heating loads exist. In addition, the estimated CVR factors for the reactive power were higher than the estimated CVR factors for the active power because reactive power is more sensitive to voltage changes.

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Section: Introductionmentioning

confidence: 99%

Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

Shim

Yun

et al. 2017

Energies

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“…This method is heavily dependent on the accuracy of the regression model. − Synthesis: From load components (appliances loads are modeled as function of voltage through laboratory tests and load contributions of each appliance are obtained through surveys) or from customer classes (residential, commercial and industrial which have different percentages of appliance load composition) [1], [11]. This method gives an early estimation of CVR effects before its implementation.…”

Section: Introductionmentioning

confidence: 99%

Combined comparison-regression method for assessment of CVR effects

Vega‐Fuentes

Rosario

Cerezo-Sanchez

et al. 2014

2014 55th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)

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This paper introduces a combined comparison and regression method to quantify a credible estimation of the energy saving effect produced by Conservation Voltage Reduction (CVR). It is presented as a step by step tutorial on how to assess CVR effects with existing resources and tools at every control room in electrical distribution utilities. The method was tested in a distribution network in Canary Islands (Spain) resulting a CVR factor of 0.8211 and 9.42 MWh saved during one day operating with 2.97 % voltage reduction, equivalent to the consumption of 848 households in the region.

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“…Since the first wide-scale implementation of CVR in 1973, considerable research has been done evaluating the effects of CVR implemented at regional levels [10][11][12][13][14][15][16][17][22][23][24][25][26][27][28][29]. However, there have been relatively few reports of evaluations of the effects of CVR at a national level [30,31]. In contrast to other methods, our method allows evaluation of the effects of nationwide CVR without installing additional measuring devices.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effects of Nationwide Conservation Voltage Reduction on Peak-Load Shaving Using SOMAS Data

Nam

Kang

Lee³

et al. 2013

Energies

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Abstract:In this paper we propose a new method to evaluate the effects of nationwide conservation voltage reduction (CVR) on peak-load shaving, using substation operating results management system (SOMAS) data. Its evaluation is based on a national CVR factor, which is defined as the weighted average of CVR factors associated with all transformer banks and weighting coefficients are determined by the reconstructed loads corresponding to each transformer bank. To make use of the data resulting from nationwide CVR without installing additional measuring devices, we adopt a linearized static-load model with a linearizing parameter. SOMAS data are used to evaluate the effects of nationwide CVR on peak-load shaving in the Korean power system. Evaluation results show that the national CVR factor of the Korean power system has small values in the summer season and large values in the winter season. This means that the effect of nationwide CVR on peak-load shaving in the Korean power system presents stronger benefits during winter months.

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Estimating methodology for a large regional application of conservation voltage reduction

Cited by 39 publications

References 1 publication

Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

Combined comparison-regression method for assessment of CVR effects

Evaluation of the Effects of Nationwide Conservation Voltage Reduction on Peak-Load Shaving Using SOMAS Data

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