Reliability Assessment of Coordinated Urban Transportation and Power Distribution Systems Considering the Impact of Charging Lots

This paper investigates the harmonic distortion and losses in power distribution systems due to the dramatic increase of nonlinear loads. This paper tries to determine the amount of the harmonics generated by nonlinear loads in residential, commercial and office loads in distribution feeders and estimates the energy losses due to these harmonics. Norton equivalent modeling technique has been used to model the nonlinear loads. The presented harmonic Norton equivalent models of the end user appliances are accurately obtained based on the experimental data taken from the laboratory measurements. A 20 kV/400V distribution feeder is simulated to analyze the impact of nonlinear loads on feeder harmonic distortion level and losses. The model follows a “bottom-up” approach, starting from end users appliances Norton equivalent model and then modeling residential, commercial and office loads. Two new indices are introduced by the authors to quantize the effect of each nonlinear appliance on the power quality of a distribution feeder and loads are ranked based on these new defined indices. The simulation results show that harmonic distortion in distribution systems can increase power losses up to 20%.

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The impact of load management and renewable DG on the service restoration of future power distribution systems

2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC) ◽

10.1109/eeeic.2015.7165443 ◽

2015 ◽

Cited By ~ 4

Author(s):

Maad AlOwaifeer ◽

Mohammad AlMuhaini ◽

Abdulrahman AlSaggaf

Keyword(s):

Power Distribution ◽

Distribution Systems ◽

Load Management ◽

Power Distribution Systems ◽

Service Restoration ◽

The Impact

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Impact of System Average Interruption Duration Index Threshold on the Reliability Assessment of Electrical Power Distribution Systems

International Journal of Electrical and Electronics Research ◽

10.37391/ijeer.060203 ◽

2018 ◽

Vol 6 (2) ◽

pp. 17-31

Author(s):

Ganiyu Adedayo Ajenikoko ◽

Ridwan Abiola Oladepo

Keyword(s):

Power Distribution ◽

Distribution System ◽

Distribution Systems ◽

Electrical Power ◽

Reliability Assessment ◽

Research Paper ◽

Threshold Values ◽

The Impact ◽

Number Of Customers ◽

System Average

System Average Interruption Duration Index (SAIDI) is one of the parametric indices used for assessment of the performance of electrical power network. It is the ratio of customers’ interruption duration to the total number of customers served. SAIDI threshold is used to determine the calendar days upon which either the system design limits or operational limits are exceeded. This research paper presents the impact of SAIDI threshold on the reliability assessment of electrical power distribution system. Data were collected from ten selected feeders of Ibadan distribution system for a period of five years. The daily SAIDI, natural logarithm of SAIDI, the log-average of SAIDI and the standard derivation of the logarithm of SAIDI were used as input parameters in the development of SAIDI threshold model. The result of the research paper shows that the SAIDI threshold values fluctuate over the years with the least and highest SAIDI threshold values as 2.11596 and 4.62518 respectively which were recorded in the months of September and April. The SAIDI thresholds in the months of January, February, March, April, May and June are 3.18318, 3.32458, 4.22242, 4.62518, 2.71360 and 3.27760 respectively suggesting an indefinite pattern in the SAIDI threshold as a result of unexpected interruptions experienced by customers attached to the distribution feeders. SAIDI threshold forms a basis for power system planning and maintenance strategies.

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Impact analysis of changing the neutral treatment solution in an MV electrical station on the system performance

MATEC Web of Conferences ◽

10.1051/matecconf/201821002054 ◽

2018 ◽

Vol 210 ◽

pp. 02054 ◽

Cited By ~ 1

Author(s):

Paul Mihai Mircea ◽

Ion Marin ◽

Ion Mircea ◽

Denisa Rusinaru ◽

Doru Ursu ◽

...

Keyword(s):

Power Distribution ◽

Distribution Systems ◽

Impact Analysis ◽

Performance Standards ◽

Complete Analysis ◽

Power Distribution Systems ◽

Actual Operation ◽

High Standards ◽

The One ◽

The Impact

The actual operation of the power distribution systems asks for high standards concerning the performance of the system in terms of continuity and safety in supplying consumers on the one hand and the quality of the delivered energy on the other hand. Thus, the paper aims to present a complete analysis of the impact that the modification of the neutral treatment system in a 110 kV / MV station belonging to Energy Distribution Oltenia (DEO), has on both the number and the type of unwanted events or phenomena as well as on the network parameters and the transient regime which occurs as a result of some defects with the earth. All of these have been analyzed taking into account the new performance standards that distribution systems have to respect.

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