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Journal articles on the topic 'Power quality index'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Jo, Si-Hun, SeoEun Son, and Jung-Wook Park. "On Improving Distortion Power Quality Index in Distributed Power Grids." IEEE Transactions on Smart Grid 4, no. 1 (2013): 586–95. http://dx.doi.org/10.1109/tsg.2012.2222943.

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Feng, Wei Yuan, Xue Feng Dong, Xu Dong Yu, Shuang Wen Wang, and Zhong Jing Liu. "Impact Factor Estimation on Power Quality to Electric Power Market." Applied Mechanics and Materials 448-453 (October 2013): 2667–72. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2667.

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Power quality and power marketing are comprehensive concept contains multiple indexes. This paper builds the index system of the power quality promoting the power market development. And the structural equation modeling (SEM) be used to calculate the impact factor of power quality to marketing at different times and areas. This paper firstly puts power quality and marketing which are regarded as latent variables. And select the power quality index that includes the amplitude, frequency, spectrum, modulation, the notch depth and marketing index that includes market share, electricity consumptio
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3

Milanović, Jovica V., Sami Abdelrahman, and Huilian Liao. "Compound index for power quality evaluation and benchmarking." IET Generation, Transmission & Distribution 12, no. 19 (2018): 4269–75. http://dx.doi.org/10.1049/iet-gtd.2018.5391.

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Naik, Chirag A., and Prasanta Kundu. "Power quality index based on discrete wavelet transform." International Journal of Electrical Power & Energy Systems 53 (December 2013): 994–1002. http://dx.doi.org/10.1016/j.ijepes.2013.06.024.

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5

Szabó, Roland Z., and Márk János Tátrai. "Digitalization, Quality of Life and Purchasing Power." Theory, Methodology, Practice 16, no. 2 (2020): 97–102. http://dx.doi.org/10.18096/tmp.2020.02.10.

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The World Economic Forum stated that while digitalization caused a rapid productivity growth, it has also had its disadvantages. Can digitalization be the catalyst of economic development? Our hypothesis contributes to the debate that the higher the level of digital development in a given country, the greater the quality of life and purchasing power it can achieve due to the benefits of various digital technologies. In our research, we investigated the relationship between the Digital Economy and Society Index (DESI), the Quality of Life Index (QLI) and the Purchasing Power Index (PPI) among t
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Yu, Yunjun, Yuntao Xue, Chao Tong, Sui Peng, Jianbo Xin, and Wenbing Su. "RAGA-PPE Model for Power Quality Comprehensive Evaluation." Open Fuels & Energy Science Journal 8, no. 1 (2015): 211–17. http://dx.doi.org/10.2174/1876973x01508010211.

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This paper proposes RAGA-PPE comprehensive assessment model specifically for high-dimensional index system issue in order to conduct comprehensive evaluation of the power quality of multi-index regional power grid from three dimensions of index, time and region through adjustment of time factor size. The model adopts PPE to convert power index of multidimensional data to lower-dimensional subspace and compress multiple power indexes to single power index for systematic comprehensive evaluation, which overcomes shortcomings such as influences of human and subjective factors and local optimizati
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Soon Lee, Jung-Wook Park, and Ganesh Kumar Venayagamoorthy. "New Power Quality Index in a Distribution Power System by Using RMP Model." IEEE Transactions on Industry Applications 46, no. 3 (2010): 1204–11. http://dx.doi.org/10.1109/tia.2010.2045214.

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Ferreira, Danton D., José M. de Seixas, Augusto S. Cerqueira, Carlos A. Duque, Math H. J. Bollen, and Paulo F. Ribeiro. "A new power quality deviation index based on principal curves." Electric Power Systems Research 125 (August 2015): 8–14. http://dx.doi.org/10.1016/j.epsr.2015.03.019.

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Raptis, T. E., G. A. Vokas, P. A. Langouranis, and S. D. Kaminaris. "Total Power Quality Index for Electrical Networks Using Neural Networks." Energy Procedia 74 (August 2015): 1499–507. http://dx.doi.org/10.1016/j.egypro.2015.07.706.

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10

Zhao, Kuo, Yi Bin Zhang, and Ya Guang Wang. "Study for Wind Farm Power Quality Based on Wind Turbine’s Characteristic Parameters." Advanced Materials Research 986-987 (July 2014): 546–50. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.546.

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The grid-connected wind farms bring power quality problems to power system due to the volatility and random of wind power generation. Analysis and calculation are carried out in this paper for the main influence factors of wind power harmonics, voltage fluctuations and flicker, and the assessment methods of the above power quality problems. For a certain wind farm, the corresponding power quality index limits can be calculated. Assessment conclusions can also be given by comparing the calculated power quality index values and the index limits.
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11

JI, Cui, Siming HUA, Bingbing ZOU, et al. "Monitoring and Analysis of Power Quality in Photovoltaic Power Generation System." E3S Web of Conferences 64 (2018): 06008. http://dx.doi.org/10.1051/e3sconf/20186406008.

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Solar photovoltaic (PV) has been developed rapidly due to its clean and green renewable characteristics. The connection of photovoltaic power generation to the traditional grid system is bound to bring power quality problems. Based on above, this paper introduces the power quality testing method of photovoltaic grid-connected power grid in detail. And then takes the Shanghai Qingpu Nanrong distributed photovoltaic power generation for example, which is the largest single roof photovoltaic power station in Shanghai by far, to use the method to test its power quality. The power quality index inc
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Papaika, Yu A., O. H. Lysenko, Ye V. Koshelenko, and I. H. Olishevskyi. "Mathematical modeling of power supply reliability at low voltage quality." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (2021): 97–103. http://dx.doi.org/10.33271/nvngu/2021-2/097.

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Purpose. Finding dependence between reliability indexes and power quality. Working out methodology for calculation of reliability index reduction depending on poor power quality based on found dependency. Methodology. The method of harmonic analysis, the principle of superposition for instantaneous power and the methods of the theory of electric machines. The research objects are distribution processes, processes of transformation, transmitting and consumption of electrical energy in power systems of 6 and 0.4 kV with non-sinusoidal voltage in it. The subjects of the research are reliability i
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13

Wang, Yong Hua, and Guo Liang Luo. "Research on Power Quality Evaluation Based on Matter-Element Extension Model." Applied Mechanics and Materials 411-414 (September 2013): 2735–41. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.2735.

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Based on the matter-element extension model, this paper first builds a set of reasonable power quality evaluation index system, and then determines the index value through the analytical hierarchy process (AHP), and finally makes a comprehensive evaluation of power supply quality. With an example based on, this paper will prove the feasibility of matter-extension model supplied in power quality evaluation.
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14

Atanov, I. V., V. Ya Khorol’skii, A. B. Ershov, and S. S. Yastrebov. "A Generalized Quality Index of a Self-Contained Power Supply System." Russian Electrical Engineering 89, no. 7 (2018): 428–31. http://dx.doi.org/10.3103/s1068371218070039.

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15

Crozier, J. T., and W. N. Wisdom. "A power quality and reliability index based on customer interruption costs." IEEE Power Engineering Review 19, no. 4 (1999): 59–61. http://dx.doi.org/10.1109/39.755017.

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16

Elbasuony, Ghada S., Shady H. E. Abdel Aleem, Ahmed M. Ibrahim, and Adel M. Sharaf. "A unified index for power quality evaluation in distributed generation systems." Energy 149 (April 2018): 607–22. http://dx.doi.org/10.1016/j.energy.2018.02.088.

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17

Aksan, Fachrizal, Michał Jasiński, Tomasz Sikorski, et al. "Clustering Methods for Power Quality Measurements in Virtual Power Plant." Energies 14, no. 18 (2021): 5902. http://dx.doi.org/10.3390/en14185902.

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In this article, a case study is presented on applying cluster analysis techniques to evaluate the level of power quality (PQ) parameters of a virtual power plant. The conducted research concerns the application of the K-means algorithm in comparison with the agglomerative algorithm for PQ data, which have different sizes of features. The object of the study deals with the standardized datasets containing classical PQ parameters from two sub-studies. Moreover, the optimal number of clusters for both algorithms is discussed using the elbow method and a dendrogram. The experimental results show
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18

Borrás-Talavera, María Dolores, Juan Carlos Bravo, and César Álvarez-Arroyo. "Instantaneous Disturbance Index for Power Distribution Networks." Sensors 21, no. 4 (2021): 1348. http://dx.doi.org/10.3390/s21041348.

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The stability of power systems is very sensitive to voltage or current variations caused by the discontinuous supply of renewable power feeders. Moreover, the impact of these anomalies varies depending on the sensitivity/resilience of customer and transmission system equipment to those deviations. From any of these points of view, an instantaneous characterization of power quality (PQ) aspects becomes an important task. For this purpose, a wavelet-based power quality indices (PQIs) are introduced in this paper. An instantaneous disturbance index (ITD(t)) and a Global Disturbance Ratio index (G
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19

Sun, Yi Xin, Chao Kong, Shuai Yuan, and Gang Liu. "Research on Analysis and Evaluation System of Power Grid Enterprises Asset Quality." Advanced Materials Research 860-863 (December 2013): 2627–31. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2627.

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This paper summarized the operational characteristic of grid enterprises asset, and put forward the key factor which reflected asset quality. Then it adjusted the evaluation criteria of different index, determine relative weights based on AHP, and constructed an index system of analysis and evaluation on asset quality, which satisfied the requirement of domestic and overseas comparative analysis. As a result, this index system offers support on improving asset quality and controlling operational risk for power grid enterprises.
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20

Pranatami, Dwimei Ayudewandari, Dwimei Ayudewandari Pranatami, Anila Umriana Umriana, and Eka Vasia Anggis. "EDUCATION POWER SATISFACTION INDEX ON UIN WALISONO SEMARANG SERVICES." Journal of Quality Assurance in Islamic Education (JQAIE) 1, no. 1 (2021): 51–63. http://dx.doi.org/10.47945/jqaie.v1i1.390.

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Quality assurance is one of the benchmarks that can be seen in assessing the quality of a university. All efforts that can be made related to the quality assurance process must be carried out starting from the level of study programs to tertiary institutions and a thorough evaluation not only related to the learning curriculum but also the human resources involved in it. One of the essential human resources involved in the learning process is educators. The optimal performance of educators will affect the whole teaching and learning process, and the implementation of these educators is strongl
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21

Jasiński, Michał, Tomasz Sikorski, Dominika Kaczorowska, et al. "A Case Study on a Hierarchical Clustering Application in a Virtual Power Plant: Detection of Specific Working Conditions from Power Quality Data." Energies 14, no. 4 (2021): 907. http://dx.doi.org/10.3390/en14040907.

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The integration of virtual power plants (VPP) has become more popular. Thus, research on VPP for different issues is highly desirable. This article addresses power quality issues. The presented investigation is based on multipoint, synchronic measurements obtained from five points that are related to the VPP. This article provides a proposition and discussion of using one global index in place of the classical power quality (PQ) parameters. Furthermore, in the article, one new global power quality index was proposed. Then the PQ measurements, as well as global indexes, were used to prepare inp
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22

Sierra-Fernández, J. M., J. J. González De La Rosa, A. Agüera-Pérez, J. C. Palomares Salas, and O. Florencias-Oliveros. "Evaluation of a new Power Quality index, based in Higher Order Statistics." Renewable Energy and Power Quality Journal 1, no. 15 (2017): 37–42. http://dx.doi.org/10.24084/repqj15.210.

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23

Lee, G. J., M. M. Albu, and G. T. Heydt. "A Power Quality Index Based on Equipment Sensitivity, Cost, and Network Vulnerability." IEEE Transactions on Power Delivery 19, no. 3 (2004): 1504–10. http://dx.doi.org/10.1109/tpwrd.2004.829124.

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24

Salarvand, A., B. Mirzaeian, and M. Moallem. "Obtaining a quantitative index for power quality evaluation in competitive electricity market." IET Generation, Transmission & Distribution 4, no. 7 (2010): 810. http://dx.doi.org/10.1049/iet-gtd.2009.0479.

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25

Belchior, Fernando, Thiago Moura Galvão, Paulo Fernando Ribeiro, and Paulo Márcio Silveira. "Comparative Analysis of Power Quality Instruments in Measuring Power under Distorted Conditions." International Journal of Emerging Electric Power Systems 16, no. 5 (2015): 421–29. http://dx.doi.org/10.1515/ijeeps-2015-0042.

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Abstract This paper aims to evaluate the performance of commercial power quality (PQ) instruments. By using a high precision programmable voltage and current source, five meters from different manufacturers are analyzed and compared. At first, three-phase voltage signals are applied to those PQ instruments, considering harmonic distortion, voltage dip, voltage swell, as well as unbalanced voltages. These events are measured, compared and evaluated considering the different instruments. In addition, voltage and current signals are applied under different conditions, with and without harmonic an
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26

Vishwanath, G., M. Lokesh, N. Mohan, and A. D. Kulkarni. "Weighted Multi-Objective Index-Based Placement of Power Quality Disturbance Mitigating Devices in DG Environment." WSEAS TRANSACTIONS ON ELECTRONICS 11 (May 20, 2020): 72–79. http://dx.doi.org/10.37394/232017.2020.11.9.

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In recent years, the Electrical Distribution system is operated with the integration of various Distributed Generators close to its working limits. Some of the D-facts devices such as D-STATCOM, DVR, and UPQC are placed in the Distribution system to enhance the power quality and to improve the overall stability of the system but the placement of these D-Facts devices in DG environment is essential for the overall power quality improvement. In this paper, a novel technique is introduced based on weighted multi-objective function with power quality indicators for finding the most sensitive bus c
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Li, Yan Qing, Fu Ju Wang, and Man Man Yang. "A Simple Analysis of the Influence on Power Quality from Grid Photovoltaic Power Generation System." Advanced Materials Research 347-353 (October 2011): 70–74. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.70.

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As the increasing proportion of photovoltaic power generation in power grid, the influence from grid photovoltaic power generation to power quality is more and more significant. This paper analyzes the reasons of voltage fluctuation, voltage flicker and harmonics aroused by the photovoltaic energy grid, and summarizes the effects to other power quality index from photovoltaic energy grid. Then it puts forward the improvement actions, which has certain directive significance to the grid planning on photovoltaic power generation.
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Lee, Sangho. "The effect of the quality of the military’s feeding system on meal service satisfaction and intangible combat power: Focusing on soldiers' behavioral intangible combat power." Journal of Advances in Military Studies 3, no. 3 (2020): 69–89. http://dx.doi.org/10.37944/jams.v3i3.81.

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This study analyzed the impact of the quality of the military's feeding system on meal service satisfaction and intangible combat power. This research will provide policy implications for the efficient operation of the military’s meal policy and budget.This study identified the four factors (food quality, hygiene, environment, and operation) related to service quality in the military's feeding system. Soldiers' satisfaction with the quality of meal service was 3.21 regarding quality, 3.54 regarding hygiene, 3.35 regarding environment and 3.70 regarding operation of meal service. Satisfaction w
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Peng, Sui, and Zhi Wei Liu. "The Comprehensive Assessment of Power Quality Based on Attribute Recognition Theory and AHP Algorithm." Advanced Materials Research 1044-1045 (October 2014): 515–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.515.

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It is the direction of the future development of the electricity market to assess power quality and determine the tariff in accordance with the power quality. This paper established attribute recognition theoretical model, and determined the weight of each evaluation index of power quality based on Analytic Hierarchy Process (AHP) algorithm, and proposed the comprehensive assessment of power quality based on attribute recognition theory and AHP algorithm. Even considering various impact factors of steady state and transient state, this algorithm is able to avoid the subjectivity affecting the
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Wang, Jidong, Naixing Ye, and Leijiao Ge. "Steady-State Power Quality Synthetic Evaluation Based on the Triangular Fuzzy BW Method and Interval VIKOR Method." Applied Sciences 10, no. 8 (2020): 2839. http://dx.doi.org/10.3390/app10082839.

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With the increasing consumption of fossil fuels, renewable sources power generation has attracted more and more attention. However, with the integration of renewable energy and a large number of non-linear loads in power systems, several power quality problems are attracting the attention of researchers. At present, only national standards for an individual power quality index have been set in China. When evaluating power quality in practice, the individual standard cannot reflect a comprehensive level of power quality. In this paper, a synthetic evaluation method for steady-state power qualit
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31

Jasiński, Michał, Tomasz Sikorski, Paweł Kostyła, Zbigniew Leonowicz, and Klaudiusz Borkowski. "Combined Cluster Analysis and Global Power Quality Indices for the Qualitative Assessment of the Time-Varying Condition of Power Quality in an Electrical Power Network with Distributed Generation." Energies 13, no. 8 (2020): 2050. http://dx.doi.org/10.3390/en13082050.

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This paper presents the idea of a combined analysis of long-term power quality data using cluster analysis (CA) and global power quality indices (GPQIs). The aim of the proposed method is to obtain a solution for the automatic identification and assessment of different power quality condition levels that may be caused by different working conditions of an observed electrical power network (EPN). CA is used for identifying the period when the power quality data represents a different level. GPQIs are proposed to calculate a simplified assessment of the power quality condition of the data collec
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32

Kotarski, Kristijan, and Alexander C. Tan. "Measuring Currency Power from 2005 to 2018." Politička misao 56, no. 3-4 (2020): 241–68. http://dx.doi.org/10.20901/pm.56.3-4.11.

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The main research goal of this paper is to empirically assess the state of US currency power relative to its main rivals in the period between 2005 and 2018. The most novel aspect of our inquiry is the design of three new composite indices called: Monetary Capability Index (MCI), Quality of Governance Index (QGI) and Currency Internationalization Index (CII). We argue that those indices are indispensable in an attempt to empirically measure the concept of currency power, both its underlying material and non-material resources, as well as the degree of their effective exploatation. Based on the
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33

Huang, Yuan Sheng, and Li Ming Yuan. "Fuzzy Synthetic Evaluation of Power Quality Based on Combination Weighting Method." Advanced Materials Research 201-203 (February 2011): 2470–75. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2470.

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According to the national standard, this paper presents the evaluation indexes of power quality and the classifications of each index. The method integrates advantages of both G1 and entropy weight coefficient method. Also, it establishes an fuzzy synthetic evaluation for power quality evaluation by fuzzy theory. 5 observation points on the power quality was graded. The test shows that the combination weighting evaluation model based on fuzzy synthetic evaluation can evaluate the power quality comprehensively and effectively.
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Khan, Idris, Honglu Zhu, Jianxi Yao, Danish Khan, and Tahir Iqbal. "Hybrid Power Forecasting Model for Photovoltaic Plants Based on Neural Network with Air Quality Index." International Journal of Photoenergy 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/6938713.

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High concentration of greenhouse gases in the atmosphere has increased dependency on photovoltaic (PV) power, but its random nature poses a challenge for system operators to precisely predict and forecast PV power. The conventional forecasting methods were accurate for clean weather. But when the PV plants worked under heavy haze, the radiation is negatively impacted and thus reducing PV power; therefore, to deal with haze weather, Air Quality Index (AQI) is introduced as a parameter to predict PV power. AQI, which is an indication of how polluted the air is, has been known to have a strong co
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Yuan, Jin Jing, Sen Ouyang, and Jin Liang Jiang. "Incentive and Punishment Mechanism Based Method Study of Power Quality Dynamic Comprehensive Evaluation." Applied Mechanics and Materials 325-326 (June 2013): 632–36. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.632.

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A dynamic comprehensive evaluation method of power quality based on incentive and punishment mechanism is proposed. At the beginning, the index system is designed and unified. Next, the incentive and punishment mechanism model of each index is established. Then, the vertical and horizontal scatter degree method and minimal variability theory are applied to calculate the comprehensive evaluation value of all the indices on every time period and on the whole time series respectively. Finally, the realistic example demonstrates that this method can easily differentiate the quality of different ev
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Lei, Guang Yu, Yuan Zeng, and Cong Zhao. "Study on the Calculation of Power Grid Asset Utilization Index." Advanced Materials Research 860-863 (December 2013): 2122–26. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2122.

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As the using quality of power grid asset becomes the focus of concern, the reasonable power grid asset utilization index is needed. The paper discusses the researching level of domestic and foreign power grid assets utilization and gives a brief analysis of the typical factors which have great influential on the utilization of power grid asset. According to safety and network structure requirements during the operation, the traditional power grid asset utilization indices were improved. Finally, the paper selects the typical 10kV distribution lines to conduct the calculation of utilization, an
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Jasiński, Michal, Tomasz Sikorski, Dominika Kaczorowska, et al. "A Case Study on Power Quality in a Virtual Power Plant: Long Term Assessment and Global Index Application." Energies 13, no. 24 (2020): 6578. http://dx.doi.org/10.3390/en13246578.

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The concept of virtual power plants (VPP) was introduced over 20 years ago but is still actively researched. The majority of research now focuses on analyzing case studies of such installations. In this article, the investigation is based on a VPP in Poland, which contains hydropower plants (HPP) and energy storage systems (ESS). For specific analysis, the power quality (PQ) issues were selected. The used data contain 26 weeks of multipoint, synchronic measurements of power quality levels in four related points. The investigation is concerned with the application of a global index to a single-
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Chen, Xue, Dacai Chen, Jiyu Li, Yifu Lin, and Jutian Lai. "Research on Comprehensive Evaluation of Service Quality of Distribution Network Construction Unit Based on Analytic Hierarchy Process." E3S Web of Conferences 276 (2021): 02006. http://dx.doi.org/10.1051/e3sconf/202127602006.

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The service quality level of the construction unit plays an important role in improving the construction quality of the distribution network and the operating efficiency of the power grid enterprises. Therefore, this article combines the characteristics of the construction process management of the distribution network, aims to improve the service quality level of the construction unit, and combines the relevant system requirements of the power grid enterprise and the construction standardization management norms to construct a scientific and reasonable evaluation index system for the service
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39

Haidar, S., E. Moussa, M. El Hassan, and M. Badawi El Najjar. "Design of Power Quality Virtual Lab Toolbox using LabVIEW/Multisim." Renewable Energy and Power Quality Journal 19 (September 2021): 143–48. http://dx.doi.org/10.24084/repqj19.240.

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This paper presents a Power Quality (PQ) virtual lab that can be used by electrical engineers (EE) to enhance their knowledge and awareness on power quality disturbances in accordance to power quality standards. It will offer the EE the facility to become more aware about the problems tackling power systems and nonlinear devices, and their effects on the power quality indices. This work is built using NI LabVIEW/Multisim and is composed out of many simulations and experiments each with its learning objectives. The established measured power quality indices are mainly the root mean square (RMS)
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40

Setiyono, Setiyono, and Bambang Dwinanto. "Single Phase Power Factor Improvement Based Instantaneous Power P Q Theorm." Bulletin of Computer Science and Electrical Engineering 1, no. 2 (2020): 42–53. http://dx.doi.org/10.25008/bcsee.v1i2.9.

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This paper presents how to harmonic disturbance reduce on single phase power system. One of the most popular method is harmonic signal extraction with instantaneous power p q theorm. This algorithm implemented to harmonic cencellation by active power filter circuit be paralled with the non linier load. This filter generates of current compensation that are injected into the grid to improve power quality. This Filter is built by an inverter circuit that consists of a mosfet switch array and capasitor mounted on DC link side. Two types of loads are resitive inductive and resistive capasitive pro
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41

Wen, Cong Xi, Shan Gao, Xiang Ning Xiao, Yong Hai Xu, and Shun Tao. "Forecast of Power Quality Index Based on the Discrete Fourier Decomposition and AR Model." Advanced Materials Research 732-733 (August 2013): 1420–26. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.1420.

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A method of autoregressive (AR) based on discrete Fourier analysis is proposed to forecast the indexes of unbalance factor and total harmonic distortion. The discrete Fourier transform of the index sequence is analyzed and the low frequency components are extracted. Autoregressive method is applied to forecast each low frequency component. Through inverse discrete Fourier transform, the forecasting low frequency components are inverted to forecasting sequence of the index in time domain. Actual data is used to test this method and the results show that discrete Fourier analysis is possible to
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Wang, Xi Liang, Xuan Qin, Dao Xin Liu, et al. "Power System Data Quality Evaluation Based on the Analytic Hierarchy Process." Advanced Materials Research 712-715 (June 2013): 2611–14. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2611.

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The demand for electric power data is more and more widely, and put forward higher requirements to the quality of statistical data. This paper combined with the features of electric power data. Evaluate data quality from the accuracy, completeness, uniqueness, consistency, accuracy, efficiency and timeliness seven aspects. And put forward the specific evaluation methods of each evaluation index. Then build a whole data quality evaluation process on this basis, quantitative analysis the data in the database, to acquaintance the data quality condition.
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43

Li, Chen, Junjie Zeng, Xinfeng Jin, and Wenwen Chu. "Quality Index Evaluation Model of MPP Sold under the E-Commerce Platform." Mathematical Problems in Engineering 2021 (June 4, 2021): 1–9. http://dx.doi.org/10.1155/2021/5589839.

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The paper was intended to address the deficiencies of quality and safety appraisement methods for mobile power pack (MPP) sold on e-commerce platforms. Based on the comprehensive index method, the quality index evaluation model of MPP under e-commerce platform was constructed by combining principal component analysis (PCA), cluster analysis, and analytic hierarchy process (AHP). The index system firstly analyzed the factors related to the quality and safety of MPP and determined the original index. Then, the original index was optimized by combining PCA and clustering analysis, and the index s
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Fernandez-Crehuet, Jose Maria, Jorge Rosales-Salas, and Rodrigo Avilés. "Best city to invest in: European Cities Quality Index." Risk Governance and Control: Financial Markets and Institutions 10, no. 1 (2020): 8–22. http://dx.doi.org/10.22495/rgcv10i1p1.

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In this paper, we propose an index to measure the quality of the most important European cities. Using collected data from 66 cities belonging to the 28 countries within the European Union and applying the principal components analysis method, we construct the European Cities Quality Index (ECQI) as a combination of eight dimensions: (1) Public health, (2) Education, (3) Employment and incomes, (4) Environment, (5) Gender equality, (6) Leisure and entertainment, (7) Housing and safety and (8) Transport and mobility, that are in turn made up of 40 distinct variables. We find that London, Aarhus
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Florencias-Oliveros, Olivia, Jose María Sierra-Fernández, Juan José González- de la Rosa, Agustín Agüera-Pérez, Manuel Jesús Espinosa-Gavira, and José Carlos Palomares-Salas. "A Site Characterization Index for Continuous Power-Quality Monitoring based on Higher-Order Statistics." Renewable Energy and Power Quality Journal 18 (June 2020): 255–60. http://dx.doi.org/10.24084/repqj18.288.

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Ballal, Makarand Sudhakar, Hiralal Murlidhar Suryawanshi, and Subin Earecheril Koshy. "Model for Analysis of Power Quality Index and Determination of Its Causes and Effects." Journal of The Institution of Engineers (India): Series B 99, no. 5 (2018): 493–508. http://dx.doi.org/10.1007/s40031-018-0340-x.

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Lou, Yu Cheng, Da Xie, Jun Qi Feng, Min Xia Yang, and Yu Zhang. "Control Strategy of the Charging-Discharging-Storage Integrated Station on Reactive Power/Voltage of Power System." Advanced Materials Research 860-863 (December 2013): 1120–28. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1120.

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Compared to reactive power/voltage index and standard operation procedure (SOP) of power system, the reactive power/voltage index of charging-discharging-storage integrated station is defined, which includes voltage margin and voltage adjustable capability of integrated station ((ISVM & ISVAC). And then the reactive power compensation control strategy of integrated station is put forward and proved to be lossless in power. According to the reactive power regulation characteristic, a reasonable reactive power distribution between shunt integrated stations can be realized by the reactive pow
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Jasiński, Michał. "Combined Correlation and Cluster Analysis for Long-Term Power Quality Data from Virtual Power Plant." Electronics 10, no. 6 (2021): 641. http://dx.doi.org/10.3390/electronics10060641.

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Analysis of the connection between different units that operate in the same area assures always interesting results. During this investigation, the concerned area was a virtual power plant (VPP) that operates in Poland. The main distributed resources included in the VPP are a 1.25 MW hydropower plant and an associated 0.5 MW energy storage system. The mentioned VPP was a source of synchronic, long-term, multipoint power quality (PQ) data. Then, for five related measurement points, the conclusion about the relation in point of PQ was performed using correlation analysis, the global index approa
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Galal Uddin, Md, Md Moniruzzaman, and Mala Khan. "Evaluation of Groundwater Quality Using CCME Water Quality Index in the Rooppur Nuclear Power Plant Area, Ishwardi, Pabna, Bangladesh." American Journal of Environmental Protection 5, no. 2 (2017): 33–43. http://dx.doi.org/10.12691/env-5-2-2.

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Sinderby, C., L. Lindstrom, and A. E. Grassino. "Automatic assessment of electromyogram quality." Journal of Applied Physiology 79, no. 5 (1995): 1803–15. http://dx.doi.org/10.1152/jappl.1995.79.5.1803.

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Power spectrum analysis of the diaphragm electromyogram (EMGdi) is time consuming, and no criteria have been developed to objectively quantify contamination of the signal. The present work describes a set of computer algorithms that automatically select EMGdi free of the electrocardiogram and numerically quantify the common artifacts that affect the EMGdi. The algorithms were tested 1) on human EMGdi (n = 5) obtained with esophageal electrodes positioned at the level of the gastroesophageal junction, 2) on EMGdi obtained in mongrel dogs (n = 5) with intramuscular electrodes in the costal diaph
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