Index-Based Assessment of Voltage Rise and Reverse Power Flow Phenomena in a Distribution Feeder Under High PV Penetration

Hasheminamin, Maryam; Agelidis, Vassilios G.; Salehi, Vahid; Teodorescu, Remus; Hredzak, Branislav

doi:10.1109/jphotov.2015.2417753

Cited by 89 publications

(44 citation statements)

References 21 publications

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“…Accordingly, it is enough to have PV penetration value and the load value of each node and in each phase to investigate voltage stability. The model of PV used in this work is selected from the study of Reference [25] and is shown in Figure 4.…”

Section: Voltage Stability Criterion In Presence Of Pv Unitsmentioning

confidence: 99%

Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Ghaffarianfar

Hajizadeh

2018

Energies

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Voltage stability analysis of power distribution systems with high photovoltaic (PV) penetration is a challenging problem due to the stochastic generation of a solar power system. Voltage stability is an important benchmark for defining PV’s penetration level in active distribution networks considering loading capacity. The massive integration of PV power units, the effect of distribution system characteristics, like high ratio of R/X, and the reported collapses in power networks come up in serious studies that investigate their impact and upcoming problems on distribution networks. Therefore, this paper proposes analytical voltage stability and it is implemented on IEEE 34 nodes radial distribution systems with 24.9 kV and 4.16 kV voltage levels. In this regard, in addition to given properties in stability and power loss analysis, a penetration coefficient for PVs is considered. Simulation results prove that the applied method can illustrate the positive and negative effects of PV in distribution networks.

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Section: Voltage Stability Criterion In Presence Of Pv Unitsmentioning

confidence: 99%

Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Ghaffarianfar

Hajizadeh

2018

Energies

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“…If the total installed PV is larger than the capacity of the host feeder, network safety and stability cannot be guaranteed. Specifically, when the production of a feeder surpasses its consumption, a reverse power flow occurs which leads to overvoltage and might cause problems to the coordination of protective devices and disconnection of equipment for stability reasons [13]. So the reactive power control strategy should be adopted to ensure the voltage is within the acceptable range.…”

Section: Reactive Power Controlmentioning

confidence: 99%

Power System Support Functions Provided by Smart Inverters—A Review

Zhao¹,

Chang²,

Shao³

et al. 2018

CPSS TPEA

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Renewable energy is seen as a viable alternative to traditional energy sources, and distributed generation (DG) based on renewable energy sources has experienced rapid growth worldwide. High penetration of renewable energy based DG systems makes the grid more vulnerable, and stricter standards have been issued for grid interconnection of DG systems. DG systems are expected to be controllable with high flexibility and reliability. Provision of grid support functions and ancillary services, such as reactive power control, fault ride-through and harmonic compensation, is the key to attaining higher utilization of DG. Such functionalities are implemented in new generation smart inverters, which can contribute to the reduced cost of energy and need for additional system resources. The state-of-the-art power system support functions are summarized in this paper for the purpose of enhancing operation in low-voltage networks. Experimental results are given to better understand the implementation of the functions.Index Terms-Fault ride-through, harmonic compensation, power system support functions, reactive power control, smart inverters.

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“…The study presented on [4] states that voltage rise problem limits the maximum PV penetration in a network, due the stablished voltage limits, it also presents the effect occurring from a simplified electric model. Another study [5], presents a simulation of a grid with PV penetration varying from 20% to 100%, the simulation was able to prove the effect occurring.…”

Section: A Voltage Risementioning

confidence: 99%

A study of voltage rise in distribution grids with high concentration of power generators

Almeida¹,

Jota²

2018

REPQJ

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Abstract. The growing demand for electric power together with the environmental agencies pressure for decreasing polluting gases emission are the main causes of the big expansion that Distributed Generation systems have been undergoing lately. This kind of electric generation system allows to produce parts of the electricity power nearby the costumers making energy costs cheaper for final consumer and improving the share of clean sources on the energy matrix. Despite Germany's great experience with photovoltaic plants, Distributed Generation systems are not well widespread around the world. Most governmental regulations about the theme are recent and sometimes do not cover all the specificities, so it has been continuously rewritten. Although Brazilian market has a small concentration of sources connected to the distribution grids, the annual relative growth is significant. High concentration of sources nearby the costumers may cause problems in the operation and in the stability of electric quantities. Some of these problems are voltage rises, harmonics and general damages to electrical equipment. This paper presents the voltage rise effect in distribution grids with high concentration of generators; it also suggests mitigation techniques for this outcome. It becomes clear that is possible to reverse power flow without voltage rise beyond legal limits.

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Index-Based Assessment of Voltage Rise and Reverse Power Flow Phenomena in a Distribution Feeder Under High PV Penetration

Cited by 89 publications

References 21 publications

Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Power System Support Functions Provided by Smart Inverters—A Review

A study of voltage rise in distribution grids with high concentration of power generators

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