scholarly journals Method of Harmonic Source Identification Based on Harmonic Apparent Power

2018 ◽  
Vol 38 ◽  
pp. 01001 ◽  
Author(s):  
Lin Xu ◽  
Rui Xing Lin ◽  
Shuang Ting Xu
Keyword(s):  
Source Identification ◽  
New Method ◽  
Impedance Method ◽  
Independent Action ◽  
Harmonic Current ◽  
Point Of Common Coupling ◽  
Harmonic Voltage ◽  
Harmonic Source ◽  
Common Coupling ◽  
Power Standard

Based on the harmonic apparent power defined by the IEEE 1459-2010 power standard, the paper proposed a new method of identifying the main harmonic source at the point of common coupling (PCC). Using the reference impedance method, the utility and customer harmonic voltage and current contributions are calculated. And then combined with the IEEE 1459-2010 standard, defined the harmonic apparent power caused by the independent action of the equivalent harmonic source on the system side and the user side, by directly comparing the size of the two to determine the location of the main harmonic source. The method can consider the comprehensive influence of harmonic voltage and harmonic current, then identify the main harmonic source at PCC point. Finally, the rationality of the method is verified by the simulation of the IEEE 13 node system.

A New Fault-Positions Method Based on Interpolation for the Area of Vulnerability to Voltage Sags

2013 ◽  
Vol 325-326 ◽  
pp. 681-686
Author(s):  
Shuang Ya Zhou ◽  
Shun Tao ◽  
Xiang Ning Xiao ◽  
Chao Luo ◽  
Xiao Chen Zhen
Keyword(s):  
Power System ◽  
Short Circuit ◽  
New Method ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Regional Power ◽  
Short Circuit Calculation ◽  
Point Of Common Coupling ◽  
Transformer Winding ◽  
Common Coupling

The area of vulnerability (AOV) of point of common coupling (PCC) can directly reflect the issue of voltage sag caused by faults in power system. In order to calculate the area of vulnerability more accurately and faster, this paper proposes a new fault positions method based on interpolation, which overcomes the blindness of setting fault points. The influence of transformer winding connections on voltage sag is also taken into account. Short-circuit calculation is adopted and transfer matrix representing the transfer law of transformer on voltage sag is deduced firstly. Then, the principle and implementation flow of the new method are presented in detail. Finally, the new method is applied to a regional power system of China, and graphic result of the area of vulnerability is displayed under balanced and unbalanced faults.

Survey of Harmonic Profile on Electrical Distribution Network in Indonesia

2012 ◽  
Vol 433-440 ◽  
pp. 3987-3991
Author(s):  
A. Mawardi ◽  
Pranyoto ◽  
D. Sunarto ◽  
M. Firmansyah ◽  
A.S. Habibie
Keyword(s):  
Power System ◽  
Distribution Network ◽  
Distribution Area ◽  
Harmonic Current ◽  
West Java ◽  
Distribution Planning ◽  
Harmonic Emission ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Electrical Distribution Network

Profile of harmonic current condition required for power system distribution planning and harmonic management, different type of load emit different profile of harmonic, not only spectrum and amplitude but also time of event. These paper present surveys of current condition level of harmonic emission at different Voltage point of common coupling (PCC) and costumers type. Measurement located on PLN West Java distribution area.

A Novel Method for Determining Harmonic Emission Responsibilities at the Point of Common Coupling

2013 ◽  
Vol 448-453 ◽  
pp. 2380-2383
Author(s):  
Xiao Jun Zhu ◽  
Xiang Li ◽  
Bin Fu ◽  
Ang Fu ◽  
Min You Chen ◽  
...  
Keyword(s):  
Least Squares ◽  
Partial Least Squares Regression ◽  
Least Squares Regression ◽  
Harmonic Emission ◽  
Point Of Common Coupling ◽  
Practical Engineering ◽  
Data Points ◽  
Harmonic Voltage ◽  
Novel Method ◽  
Common Coupling

This paper presents a novel method for determining the harmonic emission responsibilities of utility and customer at the point of common coupling (PCC). The proposed approach is based on robust partial least squares regression (robust PLS), which estimates system harmonic impedance by utilizing the signals of harmonic voltage and current measured synchronously at PCC. Consequently the harmonic emission responsibilities are calculated. The presented method reduces or removes the effect of outlying data points. The simulation and the practical engineering results indicate that the proposed method is valid and feasible.

scholarly journals A Diagnostic Analytics of Harmonic Source Signature Recognition by Using Periodogram

2018 ◽  
Vol 8 (6) ◽  
pp. 5399
Author(s):  
M. H. Jopri ◽  
A. R. Abdullah ◽  
T. Sutikno ◽  
M. Manap ◽  
M. R. Ab Ghani ◽  
...  
Keyword(s):  
Distribution System ◽  
Single Point ◽  
Signature Analysis ◽  
Recognition Pattern ◽  
Point Of Common Coupling ◽  
Signature Recognition ◽  
Harmonic Source ◽  
Common Coupling ◽  
Harmonic Components ◽  
Current Signature

<span lang="EN-GB">This paper presents a diagnostic analytics of harmonic source signature recognition of rectifier and inverter-based load in the distribution system with single-point measurement at the point of common coupling by utilizing Periodogram. Signature recognition pattern is used to distinguish the harmonic sources accurately by obtaining the distribution of harmonic and interharmonic components and the harmonic contribution changes.  This is achieved by using the significant signature recognition of harmonic producing load obtained from analysing the harmonic contribution changes. </span><span>Based on voltage and current signature analysis, the distribution of harmonic components can be divided into three zones. To distinguish between the harmonic producing loads, the harmonic components are observed at these zones to get the signature recognition pattern.</span><span lang="EN-GB"> The result demonstrate that periodogram technique accurately diagnose and distinguish the type of harmonic sources in the distribution system.</span>

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