A novel method to determine the kind and rating of power quality solutions

2005 ◽  
Author(s):  
Dong-Jun Won ◽  
Il-Yop Chung ◽  
Seon-Ju Ahn ◽  
Seung-Il Moon
Keyword(s):  
Power Quality ◽  
Novel Method

A Novel Method of Detecting Measurement Uncertainty of Voltage Deviation

2013 ◽  
Vol 805-806 ◽  
pp. 688-692
Author(s):  
Xin Fang ◽  
Xue Liang Huang ◽  
Yan Zhu
Keyword(s):  
Measurement Uncertainty ◽  
Power Quality ◽  
National Standards ◽  
Measurement Time ◽  
Time Interval ◽  
Basic Measurement ◽  
Voltage Deviation ◽  
Novel Method ◽  
Simulation Results

Nowadays, there are various devices to detect the power quality of AC grid, where uncertainty of voltage deviation is an important parameter to investigate the power quality. National standards specify several sinusoidal waveforms to detect it, usually implemented into the detecting devices. But these waveforms are not enough and a novel method of detecting measurement uncertainty of voltage deviation is proposed in this paper. A series of detection waveforms are designed using this method. The simulation results verify that the method is available to measure uncertainty of voltage deviation more accurately. Moreover, it can be used to justify whether the basic measurement time interval of voltage deviation meets IEC standard requirements.

Power Quality Disturbances Classification Based on Modified S Transform and Decision Tree

2013 ◽  
Vol 860-863 ◽  
pp. 1891-1894
Author(s):  
Ji Liang Yi ◽  
Ou Yang Qin
Keyword(s):  
Decision Tree ◽  
Power Quality ◽  
Statistical Features ◽  
Time Frequency ◽  
S Transform ◽  
Novel Method ◽  
Power Quality Disturbances ◽  
Frequency Properties

A novel method for power quality disturbances classification is presented using modified S transform (MST) and decision tree. The time-frequency properties of power quality disturbances are analyzed and the effects of window-wide parameter g on the properties are discussed. Four statistical features are extracted from the MST module time-frequency matrix and a decision tree is utilized to recognize 9 power quality disturbances. The simulations are made to illustrate the validity of the method proposed for power quality disturbances recognition.

scholarly journals A Novel Method to Enhance of Power Quality in Distribution System using IDVR

2019 ◽  
Vol 8 (2S11) ◽  
pp. 1028-1034
Keyword(s):  
Energy Storage ◽  
Power Quality ◽  
Distribution System ◽  
Active Power ◽  
Voltage Sag ◽  
Restoration Technique ◽  
Power Injection ◽  
Long Duration ◽  
Dynamic Voltage ◽  
Novel Method

The dynamic voltage trained worker (DVR) offers series compensation and better management resolution to voltage-sag drawback; as a results of the voltage restoration technique provides Active Power injection into the distribution system, to spice up active power at intervals the system ids done correct alternative of DVR in given network, considerably for mitigating long-duration voltage dips i.e. sag, and sag mitigation amount depends on the energy storage capability of the DVR. This paper prove higher answer in modeling the simulation of voltage sag compensation through Interline Dynamic Voltage trained worker (IDVR) and it provides some way to top off dc-link energy storage dynamically. The IDVR consists of the various} DVRs connected to numerous distribution feeders within the power System. The DVRs within the IDVR system share common energy storage. one all told the DVR compensates for voltage sag showing throughout this feeder, the opposite DVRs top off the energy within the common dc-link dynamically. Thus, one DVR within the IDVR system works in voltage-sag compensation mode whereas the opposite DVRs within the IDVR system operate in constant power management mode. this system involves SPWM technologies to spice up the Doctor of Theology. The simulation results unit of measuring enclosed may additionally} the operative principles of a DVR and shows the effectiveness and also the power of the projected IDVR system to spice up power quality

Study on Optimal Location of Multiple-Type Power Quality Improving Devices

2014 ◽  
Vol 668-669 ◽  
pp. 720-723
Author(s):  
Tian Tian Sun ◽  
Wen Zhong Ma ◽  
Xing Tian Feng
Keyword(s):  
Power Quality ◽  
Optimal Location ◽  
Static Synchronous Compensator ◽  
Dynamic Voltage Restorer ◽  
Power Filter ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Novel Method ◽  
Type Power ◽  
Multiple Type

This paper presents a novel method for optimal location of multiple-type power quality improving devices in distribution network through lots of simulations in IEEE 30 bus system. Three type devices have been considered, active power filter (APF), dynamic voltage restorer (DVR) and static synchronous compensator (D-STATCOM). Using proposed method, configuration is fulfilled according to a certain order and their own law. Results show this strategy is an effective method to find optimal locations for power quality improving devices with lower cost.

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