Distributed energy storage for mitigation of voltage-rise impact caused by rooftop solar PV

Alam, Muhammad Mansoor; Muttaqi, Kashem M.; Sutanto, Danny

doi:10.1109/pesgm.2012.6345726

Cited by 80 publications

(43 citation statements)

References 13 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction required in active power injection for each inverter is calculated using either Equation (21) or (22), Equation (23) depending on which fairness perspective is currently under investigation.…”

Section: Active Power Reduction Calculationmentioning

confidence: 99%

“…The authors have concluded that proposed scheme is capable of mitigating both over voltages and voltage imbalances via active and reactive power control respectively. Use of storage for voltage rise mitigation has been the subject of investigation in a number of papers [21,22]. Coordinated control for APC and/or RPC of PVs is another solution to the voltage regulation problem proposed by a number of papers [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantification and Mitigation of Unfairness in Active Power Curtailment of Rooftop Photovoltaic Systems Using Sensitivity Based Coordinated Control

2016

View full text Add to dashboard Cite

Abstract:With increasing photovoltaic (PV) penetration in low voltage networks (LVNs), voltage regulation is a challenge. Active power curtailment (APC) is one possible solution for mitigating over voltages resulting from active power injection in LVNs. There is an inherent unfairness in the APC scheme. When generation is high and consumption is low, the voltages at the end of the feeder tend to be the highest. This results in high curtailment of active power output of the inverters located at the end of the feeder and low or even no curtailment for the inverts located closer to the transformer. A secondary voltage controller has been implemented to mitigate this unfairness in APC based voltage support schemes. The focus of this work is to quantify this unfairness and develop methods that enable residential PV owners serviced by the same feeder to participate equally in voltage regulation in the LVN.

show abstract

Section: Active Power Reduction Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantification and Mitigation of Unfairness in Active Power Curtailment of Rooftop Photovoltaic Systems Using Sensitivity Based Coordinated Control

2016

View full text Add to dashboard Cite

show abstract

“…For an integrated storage device coupled with the DC side of the rooftop PV system, as used in this paper, the PCS will also function as the charge/discharge controller. A detailed description of the rooftop PV system modeling is presented in the previous paper of the authors [11] and therefore is not included in this paper. More focus has been given on the modeling of storage devices and its charging/discharging strategies.…”

Section: A Modeling Of Battery Storage Device For Rooftop Solar Pv Smentioning

confidence: 99%

“…Stored energy could be used to support the evening peak load by serving the local loads and hence reducing the stress on the grid. An investigation of voltage-rise mitigation is presented in [11] using detailed models of solar PV and battery storage devices. However, a constant-rate charging/discharging strategy was used in [11] that makes the storage device to consume or generate a constant power over the charging or discharging period, irrespective of the PV generation and the load demand variations.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Rooftop Solar PV Impacts and Evening Peak Support by Managing Available Capacity of Distributed Energy Storage Systems

Alam

Muttaqi

Sutanto

2013

IEEE Trans. Power Syst.

Self Cite

280

136

View full text Add to dashboard Cite

A high penetration of rooftop solar photovoltaic (PV) resources into low-voltage (LV) distribution networks creates reverse power-flow and voltage-rise problems. This generally occurs when the generation from PV resources substantially exceeds the load demand during high insolation period. This paper has investigated the solar PV impacts and developed a mitigation strategy by an effective use of distributed energy storage systems integrated with solar PV units in LV networks. The storage is used to consume surplus solar PV power locally during PV peak, and the stored energy is utilized in the evening for the peak-load support. A charging/ discharging control strategy is developed taking into account the current state of charge (SoC) of the storage and the intended length of charging/discharging period to effectively utilize the available capacity of the storage. The proposed strategy can also mitigate the impact of sudden changes in PV output, due to unstable weather conditions, by putting the storage into a short-term discharge mode. The charging rate is adjusted dynamically to recover the charge drained during the short-term discharge to ensure that the level of SoC is as close to the desired SoC as possible. A comprehensive battery model is used to capture the realistic behavior of the distributed energy storage units in a distribution feeder. The proposed PV impact mitigation strategy is tested on a practical distribution network in Australia and validated through simulations. 2013 IEEE.

show abstract

“…ESSs are designed to store surplus energy during peak generation and low demand periods for later use during high power demand. It has been proposed in [76][77][78] that distributed ESS can be used for preventing overvoltage and voltage unbalance issues due to high PV penetration in LV residential networks. In references [77,78], a technique to mitigate the voltage unbalance with singlephase energy storage systems is proposed.…”

Section: Solutions For Power Quality Improvementmentioning

confidence: 99%

High penetration of PV systems in low voltage distribution networks: investigation of power quality challenges and mitigation

Chidurala¹

View full text Add to dashboard Cite

World electricity demand is continuously increasing and fossil fuel supplies are not sustainable. Solar Photovoltaic (PV) energy is one of the emerging resources around the world, which produces emission free electricity. Nowadays, the advancements in rooftop solar PV technology, government subsidies, decreasing capital cost and feed-in-tariffs have promoted installation in residential and commercial applications. The exponential uptake in widespread integration of PV systems in existing low voltage (LV) distribution networks is raising additional new challenges in terms of power quality, stability and protection. In LV distribution networks, poor power quality (PQ) is the most serious concern.Characteristically, LV distribution networks are not designed for significant back-feed of power generation to the main grid. Also, these networks are unbalanced in nature due to asymmetry in system impedances and single-phase loads. This together with a large number of small-scale PV system integrations in LV networks can cause poor PQ challenges in terms of voltage quality and harmonics. PV systems can themselves generate harmonics, due to the usage of power electronic inverters. In addition, the augmentation of power electronics based Furthermore, this research has suggested a novel solution to overcome the above PQ issues.The concept of adopting the PV inverter as a virtual DSTATCOM named as Solar-DSTATCOM has been proposed. Also, a new control strategy for the PV inverter has been developed to provide independent phase voltage regulation and load reactive power and harmonic compensation, which could eliminate issues in the unbalanced distribution network.Initially, the Solar-DSTATCOM controller has been verified in a PSCAD simulation environment. Further, different case studies have been performed on the IEEE-13 bus network for PQ issues compensation. In addition, the proposed Solar-DSTATCOM control system has been tested and verified in controller hardware-in-the-loop simulation environment, which combines the real-time digital simulator and dSPACE DS1103 hardware board. Detailed investigations are carried out for various different case studies, which include daytime, nighttime operations, the impact of dynamic load profiles and finally harmonic analysis. The analysis has revealed that Solar-DSTATCOM exceptional performance in the hardware environment has enhanced the grid PQ by providing voltage regulation, reactive power compensation and power factor correction. The harmonic emissions are well within the limits.iii Declaration by authorThis thesis is composed of my original work, and contains no material previously published or written by another person except where due reference has been made in the text. I have clearly stated the contribution by others to jointly-authored works that I have included in my thesis.

show abstract

Distributed energy storage for mitigation of voltage-rise impact caused by rooftop solar PV

Cited by 80 publications

References 13 publications

Quantification and Mitigation of Unfairness in Active Power Curtailment of Rooftop Photovoltaic Systems Using Sensitivity Based Coordinated Control

Quantification and Mitigation of Unfairness in Active Power Curtailment of Rooftop Photovoltaic Systems Using Sensitivity Based Coordinated Control

Mitigation of Rooftop Solar PV Impacts and Evening Peak Support by Managing Available Capacity of Distributed Energy Storage Systems

High penetration of PV systems in low voltage distribution networks: investigation of power quality challenges and mitigation

Contact Info

Product

Resources

About