Power Quality Evaluation Method for Multi-Power Quality Problem in Distribution Network

Aiming at the nonlinear relationship between the evaluation indexes and the complex grade of power quality, a power quality evaluation method is proposed based on model of pulse coupled neural network (PCNN). The operating schematic is analyzed according to PCNN modeling. The input power quality grade is controlled by threshold value, and the evaluation grade is output by neuron ignition. The evaluation methods between PCNN and fuzzy neural network are compared through the measured data, the results indicate that PCNN method is more scientific and accurate, and provides a new method to solve the problem on power quality evaluation of distribution network containing microgrid.

Download Full-text

A power quality evaluation method for distribution system with renewable energy

International Journal of Electronics ◽

10.1080/00207217.2019.1680745 ◽

2019 ◽

Vol 107 (5) ◽

pp. 792-807 ◽

Cited By ~ 1

Author(s):

Jinxin Chen ◽

Guobing Pan ◽

Jing Ouyang ◽

Libin Zhang

Keyword(s):

Renewable Energy ◽

Power Quality ◽

Distribution System ◽

Quality Evaluation ◽

Evaluation Method

Download Full-text

Analysis on the Impacts of Different Distributed Generation Grid-Connected Modes on Power Quality

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.1180 ◽

2014 ◽

Vol 716-717 ◽

pp. 1180-1184

Author(s):

Peng Wang ◽

Zhi Yong Ren ◽

Dong Mei Zhao ◽

Wan Xing Sheng ◽

Hui Yu ◽

...

Keyword(s):

Power Quality ◽

Distributed Generation ◽

Quality Evaluation ◽

Distribution Network ◽

Voltage Fluctuations ◽

Distributed Generations ◽

Real Distribution ◽

Voltage Deviation ◽

Integration Mode ◽

Network Power

This paper propose the power quality evaluation index used to evaluate the impacts of the different distributed generation grid-connected modes made on power quality in the distribution network. Simulation example is built on the basis of a real distribution network as prototype using DigSilent software. Then Comparative analysis of the impacts on voltage deviation, harmonic and short duration voltage fluctuations of decentralized integration mode and centralized integration mode are made. The simulation results show that the centralized mode has more influences on the distribution network power quality, especially when there is power generated by distributed generations flowing to the main grid.

Download Full-text

Traction substation power signal characteristics and transient power quality evaluation method

2019 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm) ◽

10.1109/smartgridcomm.2019.8909782 ◽

2019 ◽

Author(s):

Wenli Chen ◽

Kaitao Peng ◽

Chao Yang ◽

Yao Wang ◽

Zhihong Fu

Keyword(s):

Power Quality ◽

Quality Evaluation ◽

Evaluation Method ◽

Traction Substation ◽

Signal Characteristics ◽

Transient Power Quality

Download Full-text

The Power Quality Evaluation Method Based on the Matter-Element Comprehensive Evaluation Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1030-1032.1403 ◽

2014 ◽

Vol 1030-1032 ◽

pp. 1403-1406 ◽

Cited By ~ 1

Author(s):

Gang Zhang ◽

Fu Chao Liu ◽

Tuo Xie ◽

Jing Jing Zheng

Keyword(s):

Electric Power ◽

Power Quality ◽

Power Supply ◽

Evaluation System ◽

Quality Evaluation ◽

Evaluation Method ◽

Comprehensive Evaluation ◽

Evaluation Model ◽

Electrical Energy ◽

Element Model

As for the pricing by electrical energy quality and the decision of rewards and penalties based on the examination at assessment point, Comprehensive evaluation on power quality is one of the principal foundations. To analysis and evaluate electric power quality for electric power company is a focus research at present. In this paper, the power quality evaluation model based on the matter-element extension theory is applied to power quality evaluation service. For power quality evaluation system of the characteristics of the complexity and incompatibility between various indicators hierarchies, this paper applied the theory of matter-element extension constructing Matter-element model, and identified level of power quality of power supply company through the calculation of weight and the correlation service. Taking GanSu Grid Company as an example to evaluate power supply quality, the results show that the evaluation results of power quality evaluation method based on the matter-element evaluation method are more objective, more precise and more reasonable.

Download Full-text