A Method for Identifying Major Disturbance Sources in a Regional Grid

Feng, Dawei; Zhou, Shengjun; Wang, Tongxun; Li, Yaqiong; Liu, Yingying

doi:10.1109/peac.2018.8590614

Cited by 2 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that the investigation of CRs for the purposes of analyses related to PS has already been conducted in other papers. Such papers are [15][16][17][18][19][20][21]. In [15], a relationship between the injected power and the voltage quality at the node, in which installation of a new source is considered, is investigated with the use of the Pearson correlation coefficient.…”

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

“…The correlation approach, assuming a partial correlation study, was also proposed to identify the disturbance source affecting power quality, which is described in [19].…”

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

“…None of the mentioned papers [15][16][17][18][19][20][21] uses correlation analysis to investigate the influence of the nodal reactive powers on the nodal-voltage magnitudes, which is the case in this paper. Unlike papers [15][16][17][18][19], this paper analyzes the nature of the relationships between the distinguished quantities. As a result of this analysis, it is possible to properly select the correlation coefficient used in the investigations of CRs.…”

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the Influence of Nodal Reactive Powers on Voltages in a Power System

Okoń

Wilkosz

2023

Energies

View full text Add to dashboard Cite

The paper deals with finding power system nodes where reactive powers have the greatest influence on system voltages. The problem to be solved is important in reactive power planning. Its proper solution indicates in which nodes new sources of reactive power should be installed in order to achieve the assumed goals in the aforementioned planning. So far, the problem formulated earlier has not been satisfactorily resolved. The paper presents an original method, which, based on the entire history of the system operation states, allows a solution to the problem mentioned above to be found. The proposed method assumes the use of measurement data of nodal-voltage magnitudes and nodal reactive power. Correlational relationships between the above-mentioned quantities are investigated. The paper shows that the considered correlational relationships are not linear. In this situation, Kendall’s rank correlation coefficient is used to evaluate the strength of these correlational relationships. Analysis of the strongest relationships allows us to identify those nodal reactive powers that have the greatest influence on the voltages in the power system. The results of the analysis are the basis for determining the location of additional reactive power sources in the power system, which is very essential in reactive power planning. The proposed method is relatively easy to implement and does not require complicated calculations. The paper additionally shows that failure to use the entire spectrum of representative system states when solving the problem under consideration can adversely affect the result.

show abstract

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

“…The correlation approach, assuming a partial correlation study, was also proposed to identify the disturbance source affecting power quality, which is described in [19].…”

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

Section: General Characteristics Of the Used Statistical Approachmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of the Influence of Nodal Reactive Powers on Voltages in a Power System

Okoń

Wilkosz

2023

Energies

View full text Add to dashboard Cite

show abstract

“…Correlation analyses are used for solving different problems in PSs [9][10][11][12][13][14]. For instance, paper [9] deals with the study of the correlation between injected power and voltage quality at the node where a new energy source is planned for installation.…”

Section: Introductionmentioning

confidence: 99%

“…The identification of a low-frequency oscillation source is discussed in [12]. Likewise, paper [13] presents a correlation-analysis-based method for the localization of the deviation source by evaluating the correlation between the harmonic voltage of the node and the harmonic current of the deviation source. In [14], the sources of power quality disturbances are identified based on the analysis of aggregated data from a distributed measurement system with the use of Pearson's correlation coefficient.…”

Section: Introductionmentioning

confidence: 99%

Propagation of Voltage Deviations in a Power System

Okoń

Wilkosz

2021

Electronics

View full text Add to dashboard Cite

The paper deals with voltage profiles in a power system. The analysis of these profiles is important due to the requirement that the Root-Mean-Squared (RMS) values of nodal voltages should be within certain ranges, as well as to ensure desired power flows in a power system. In both cases, it is desirable to indicate points in a power system where it is reasonable to apply remedial measures to meet the requirements for RMS values of nodal voltages, or to effectively control the power flows in a power system. In general, candidate nodes for remediation are established based on operational experience or measurement data from a certain time point (sometimes from several time points). The paper presents a method that provides a basis for determining the aforementioned candidate nodes based on the behavior of a system over a certain period of time, which is an unquestionable advantage of this proposal. In order to achieve the abovementioned goal, the method provides for the analysis of propagation of voltage RMS value deviations in a power system. The analysis of correlational relationships between the RMS values of nodal voltages is used for this. After presentation of the theoretical background, the new original method is described in the paper. Then, case studies showing the utilization of that method are presented. At the end of the paper, features of the proposed method are enumerated.

show abstract

A Method for Identifying Major Disturbance Sources in a Regional Grid

Cited by 2 publications

References 11 publications

Analysis of the Influence of Nodal Reactive Powers on Voltages in a Power System

Analysis of the Influence of Nodal Reactive Powers on Voltages in a Power System

Propagation of Voltage Deviations in a Power System

Contact Info

Product

Resources

About