Voltage control simulations in distribution systems with high penetration of PVs using the OpenDSS

The intermittent nature of photovoltaic (PV) generation causes the voltage to fluctuate and may lead to instability, especially, in case of high penetration. In this paper, a methodology is proposed to control the reactive power generation of PV-inverters. The objective is to mitigate the voltage fluctuations at the point of common coupling (PCC) resulted from increasing or decreasing the active power output of PV plants which is dependent on solar radiation level. The generic PV-inverter models developed and recommended by the Renewable Energy Modeling Task Force (REMTF) of the Western Electricity Coordinating Council (WECC) is used to analyze the effect of high PV penetration on the dynamic voltage stability of distribution networks. Then, the tested distribution network with the embedded PV plants is modeled and simulated using PSS/E software. Levels of control that are built-in PV-inverters are tested in the case of normal operation and during disturbances. Comparison results show that the most suitable control methodology in case of disturbances and after fault clearance is the local voltage control. While the plant voltage control with coordinated V/Q control is the most preferable control methodology during normal operation.

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Voltage Control using Customer-owned Battery in Distribution Systems with High Penetration of Rooftop Solar Photovoltaic Generation

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.138.874 ◽

2018 ◽

Vol 138 (11) ◽

pp. 874-880

Author(s):

Shingo Omata ◽

Hiroshi Asano ◽

Shigeru Bando

Keyword(s):

Distribution Systems ◽

Voltage Control ◽

Solar Photovoltaic ◽

Photovoltaic Generation ◽

High Penetration ◽

Rooftop Solar

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A Target Voltage Control Method for Distribution Systems based on Nodal P&Q Prices for PV Distributed Generators

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.140.456 ◽

2020 ◽

Vol 140 (6) ◽

pp. 456-464

Author(s):

Naoto Yorino ◽

Tsubasa Watakabe ◽

Ahmed Bedawy Khalifa ◽

Yutaka Sasaki ◽

Yoshifumi Zoka

Keyword(s):

Distribution Systems ◽

Control Method ◽

Voltage Control ◽

Distributed Generators

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A Game-Theoretic Loss Allocation Approach in Power Distribution Systems with High Penetration of Distributed Generations

Mathematics ◽

10.3390/math6090158 ◽

2018 ◽

Vol 6 (9) ◽

pp. 158

Author(s):

Farzaneh Pourahmadi ◽

Payman Dehghanian

Keyword(s):

Power Systems ◽

Power Distribution ◽

Distribution System ◽

Distribution Systems ◽

Power Distribution Systems ◽

Loss Allocation ◽

Distributed Generators ◽

High Penetration ◽

Game Theoretic ◽

Allocation Approach

Allocation of the power losses to distributed generators and consumers has been a challenging concern for decades in restructured power systems. This paper proposes a promising approach for loss allocation in power distribution systems based on a cooperative concept of game-theory, named Shapley Value allocation. The proposed solution is a generic approach, applicable to both radial and meshed distribution systems as well as those with high penetration of renewables and DG units. With several different methods for distribution system loss allocation, the suggested method has been shown to be a straight-forward and efficient criterion for performance comparisons. The suggested loss allocation approach is numerically investigated, the results of which are presented for two distribution systems and its performance is compared with those obtained by other methodologies.

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Electric Vehicles in Jordan: Challenges and Limitations

Sustainability ◽

10.3390/su13063199 ◽

2021 ◽

Vol 13 (6) ◽

pp. 3199

Author(s):

Laith Shalalfeh ◽

Ashraf AlShalalfeh ◽

Khaled Alkaradsheh ◽

Mahmoud Alhamarneh ◽

Ahmad Bashaireh

Keyword(s):

Electric Vehicles ◽

Distribution System ◽

Distribution Systems ◽

Environmental Benefits ◽

System Stability ◽

Loading Conditions ◽

Stability Margins ◽

High Penetration ◽

Node Distribution ◽

The Impact

An increasing number of electric vehicles (EVs) are replacing gasoline vehicles in the automobile market due to the economic and environmental benefits. The high penetration of EVs is one of the main challenges in the future smart grid. As a result of EV charging, an excessive overloading is expected in different elements of the power system, especially at the distribution level. In this paper, we evaluate the impact of EVs on the distribution system under three loading conditions (light, intermediate, and full). For each case, we estimate the maximum number of EVs that can be charged simultaneously before reaching different system limitations, including the undervoltage, overcurrent, and transformer capacity limit. Finally, we use the 19-node distribution system to study these limitations under different loading conditions. The 19-node system is one of the typical distribution systems in Jordan. Our work estimates the upper limit of the possible EV penetration before reaching the system stability margins.

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Optimal fault location for power distribution systems with distributed generations using synchronized measurements

International Journal of Emerging Electric Power Systems ◽

10.1515/ijeeps-2020-0093 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Wen Fan ◽

Yuan Liao ◽

Ning kang

Keyword(s):

Power Distribution ◽

Distribution Systems ◽

Fault Location ◽

Test System ◽

Power Distribution Systems ◽

Distributed Generations ◽

High Penetration ◽

Maintenance Time ◽

Phasor Measurements ◽

Synchronized Measurements

AbstractAccurate fault location in distribution systems greatly shortens maintenance time and improves reliability. This paper presents novel methods to pinpoint fault location and identify possible bad measurements for enhanced accuracy. It is assumed that network parameters and topology of the distribution network are available. The methods are applicable to a single fault as well as simultaneous faults and are applicable to both balanced and unbalanced networks. The methods utilize synchronized voltage and current phasor measurements to locate the fault. The methods are validated by simulation studies using the modified IEEE 34-Node Test System. Case studies have demonstrated that the methods are suitable for distribution systems with high penetration of distributed generations.

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