Integration challenges of photovoltaic distributed generation on power distribution systems

Agüero, Julio Romero; Steffel, Steve

doi:10.1109/pes.2011.6039097

Cited by 45 publications

(17 citation statements)

References 6 publications

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“…Considering the radial topology of distribution networks and the fact that they are designed for centralized generation and unidirectional power flow, increasing penetration level of PVDG into these networks may arise numerous issues that need to be addressed [3], [4]. One of these issues is reverse power flow, which can affect voltage regulators and protection devices [5], [6]. During a fault, protection devices may not be able to detect fault currents as the bidirectional power flow from PVDG may reduce fault current and the relay will not trip.…”

Section: Introductionmentioning

confidence: 99%

Time-series analysis of photovoltaic distributed generation impacts on a local distributed network

Athari

Wang

Eylas

2017

2017 IEEE Manchester PowerTech

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Abstract-Increasing penetration level of photovoltaic (PV) distributed generation (DG) into distribution networks will have many impacts on nominal circuit operating conditions including voltage quality and reverse power flow issues. In U.S. most studies on PVDG impacts on distribution networks are performed for west coast and central states. The objective of this paper is to study the impacts of PVDG integration on local distribution network based on real-world settings for network parameters and time-series analysis. PVDG penetration level is considered to find the hosting capacity of the network without having major issues in terms of voltage quality and reverse power flow. Time-series analyses show that distributed installation of PVDGs on commercial buses has the maximum network energy loss reduction and larger penetration ratios for them. Additionally, the penetration ratio thresholds for which there will be no power quality and reverse power flow issues and optimal allocation of PVDG and penetration levels are identified for different installation scenarios.

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Section: Introductionmentioning

confidence: 99%

Time-series analysis of photovoltaic distributed generation impacts on a local distributed network

Athari

Wang

Eylas

2017

2017 IEEE Manchester PowerTech

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“…The impacts were studied to govern the seriousness of those in steady and dynamic state. They concluded with some mitigation techniques like use of more advanced STATCOMS, distributed storages, capacitor banks etc., [20].…”

Section: Fig1 Architecture Of a Grid Integrated Solar Pv System Andmentioning

confidence: 99%

Optimization Techniques for Energy handling System in a Microgrid

Joseph*,

Jeyaprabha

2020

IJRTE

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The energy from the renewable energy sources primarily depends on the geographical factors. Intermittency is a major issue for renewable energy sources which will result in comparatively high electricity generation cost and a proper need of an energy management system. In an intelligent era, the increasing penetration level of solar photovoltaic (PV) energy is becoming a tedious task. Hence, an energy management system is required to control the energy flow when there is more than one source connected. Real time energy management becomes challenging because of the time varying prices of electricity, mismatch of generation and demand etc. So, they are widely related to the optimization techniques. This paper explains a broader review of various challenges on integration of Renewable energy sources to the grid. Also, an extensive review of numerous approaches of Energy management system is given in this paper. Different optimization techniques are discussed along with its advantages and limitations for better and more optimized Energy management in the micro grid. A proper energy management system helps to decrease the electricity prices as well as increases the power system reliability. Also, improves the grid stability.

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“…As a result, LV distribution networks may encounter some technical challenges, with high numbers of PV systems installed at a residential level, which can degrade the situation, leading to poor power quality. The challenges and impacts of integrating many distributed generation resources in LV distribution networks is a well-covered topic in the literature [5,[16][17][18][19][20][25][26][27][28].…”

Section: Voltage Unbalance From Pv Penetration In LV Networkmentioning

confidence: 99%

Single-Phase PV Power Injection Limit due to Voltage Unbalances Applied to an Urban Reference Network Using Real-Time Simulation

Lucas

2018

Applied Sciences

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As photovoltaic (PV) penetration increases in low-voltage distribution networks, voltage variation may become a problem. This is particularly important in residential single-phase systems, due to voltage unbalances created by the inflow of points in the network. The existing literature frequently refers to three-phase systems focusing on losses and voltage variations. Many studies tend to use case studies whose conclusions are difficult to replicate and generalise. As levels of residential PV rise, single-phase PV power injection levels, before voltage unbalances reach standard limits, become important to be investigated. In this study, an urban European reference network is considered, and using a real-time digital simulator, different levels of PV penetration are simulated. PV systems are connected to the same phase (unbalanced case), and are also evenly phase-distributed (balanced case). Considering a 2-3% unbalance limit, approximately 3.5-4.6 kW could be injected in every bus in an unbalanced scenario. With a balanced PV distribution, the power injected could reach 10-13 kW per bus. Buses closer to the power transformer allow higher power connections, due to cable distances and inferior voltage drops. Feeder length, loads considered during simulation, and cable shunt capacitance reactance influence the results the most.

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Integration challenges of photovoltaic distributed generation on power distribution systems

Cited by 45 publications

References 6 publications

Time-series analysis of photovoltaic distributed generation impacts on a local distributed network

Time-series analysis of photovoltaic distributed generation impacts on a local distributed network

Optimization Techniques for Energy handling System in a Microgrid

Single-Phase PV Power Injection Limit due to Voltage Unbalances Applied to an Urban Reference Network Using Real-Time Simulation

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