Quantified flexibility evaluation of soft open points to improve distributed generator penetration in active distribution networks based on difference-of-convex programming

Ji, Haoran; Wang, Chengshan; Li, Peng; Zhao, Jianli; Song, Guanyu; Wu, Jianzhong

doi:10.1016/j.apenergy.2018.02.170

Cited by 63 publications

(39 citation statements)

References 42 publications

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“…24,25 The standalone energy storage device can solve the partial intraday availability issue of renewables by generation shifting through that day, and also it can participate in Volt/VAr control processes . However, there is a new type of SOPs, namely, E-SOP, in which its DC-link capacitor is replaced by a battery.…”

Section: Discussionmentioning

confidence: 99%

“…However, there is a new type of SOPs, namely, E-SOP, in which its DC-link capacitor is replaced by a battery. 24,25 The standalone energy storage device can solve the partial intraday availability issue of renewables by generation shifting through that day, and also it can participate in Volt/VAr control processes . 13 Although the combination of energy storage and SOP in DNs brings many operational benefits, however, equipping the SOP with energy storage brings more advantages.…”

Section: Discussionmentioning

confidence: 99%

“…In comparison with NOPs with a simple structure containing a power switch, these devices are based on full-controlled inverters. 25 As shown in Figure 2, E-SOPs have a battery connected to DC-link. Furthermore, they can participate in the voltage regulation of the network by supporting the reactive power.…”

Section: E-sop Modelmentioning

confidence: 99%

“…Nowadays, a new type of SOPs, namely, E-SOP is introduced in the papers of Yao et al 24 and Ji et al . 25 As shown in Figure 2, E-SOPs have a battery connected to DC-link. Therefore, the active power output of converters in such type of SOPs is semi-independent.…”

Section: E-sop Modelmentioning

confidence: 99%

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E‐SOP's contribution in a techno‐economic and clean operation of distribution networks: A multi‐objective optimization approach based on linear models

Baghban-Novin

Hamidi

Golshannavaz

et al. 2019

Int Trans Electr Energ Syst

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Summary In modern distribution networks (DNs), soft open points (SOPs) are newly introduced power electronic devices that are installed between the adjacent feeders in place of normally open points. The SOPs contribute in Volt/VAr control by accurately adjusting the active power flow and supporting the reactive power from both AC sides. A further step forward alludes to energy storage–integrated SOPs, referred to as E‐SOP, which could significantly influence the active power exchanges through charge/discharge actions in appropriate time intervals, say as the hours with high‐ and low‐price electricity tariffs. Accordingly, E‐SOPs provide a unique opportunity in effective active power control and also Volt/VAr control in the presence of distributed generations (DGs) and renewables. This study proposes a model for day‐ahead operation scheduling of DNs with high penetration of DGs and photovoltaic (PV) considering the installations of E‐SOPs. An accurate linearized model is developed to consider the technical performance of E‐SOP in power flow study. Voltage security, economic, and network emission indices are accounted as a concern of the network operator. To this end, a multi‐objective optimization model is developed based on mixed‐integer linear programming being tackled by an augmented ε‐constraint method. For assessing the effectiveness of the developed model, it is simulated on the IEEE 33‐node test system; however, the IEEE 119‐node test system is also tailored to assess the scalability issues. The obtained results are mainly represented in terms of smart charge/discharge and effective VAr support of E‐SOPs, reduced operation cost, improved voltage profile, and a reduced emission level.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: E-sop Modelmentioning

confidence: 99%

Section: E-sop Modelmentioning

confidence: 99%

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E‐SOP's contribution in a techno‐economic and clean operation of distribution networks: A multi‐objective optimization approach based on linear models

Baghban-Novin

Hamidi

Golshannavaz

et al. 2019

Int Trans Electr Energ Syst

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“…The strategy of charge/discharge is presented without any optimization. Authors of [22] determined the soft open point (SOP) of distribution network with the aim of optimal operation of energy storage to mitigate overvoltage arising from high RES penetration. A method is proposed in [23] to optimize the location and size of the distributed energy storage system (DESS).…”

Section: Introductionmentioning

confidence: 99%

Optimal placement, sizing, and daily charge/discharge of battery energy storage in low voltage distribution network with high photovoltaic penetration

et al. 2018

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Early version, also known as pre-print Link to publication from Aalborg University Citation for published version (APA): Jannesar, M. R., Sedighi, A., Savaghebi, M., & Guerrero, J. M. (2018). Optimal placement, sizing, and daily charge/discharge of battery energy storage in low voltage distribution network with high photovoltaic penetration. Applied Energy, 226, 957-966. https://doi.org/10.1016/j.apenergy.2018.06.036 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.? Users may download and print one copy of any publication from the public portal for the purpose of private study or research. ? You may not further distribute the material or use it for any profit-making activity or commercial gain ? You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access to the work immediately and investigate your claim. can mitigate these disadvantages and as a result, improve the system operation.For this purpose, battery energy storage system is charged when production of photovoltaic is more than consumers' demands and discharged when consumers' demands are increased. Since the price of battery energy storage system is high, economic, environmental, and technical objectives should be considered together for its placement and sizing. In this paper, optimal placement, sizing, and daily (24 hours) charge/discharge of battery energy storage system are performed based on a cost function that includes energy arbitrage, environmental emission, energy losses, transmission access fee, as well as capital and maintenance costs of battery energy storage system. All simulations are carried out in DIgSILENT and MATLAB linked together. Results show that by using the proposed approach, overvoltage 2 and energy losses are decreased, reverse power flow is prevented, environmental emission is reduced, and economic profit is maximized.

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Quantified analysis method for operational flexibility of active distribution networks with high penetration of distributed generators

Wang

et al. 2019

Applied Energy

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Quantified flexibility evaluation of soft open points to improve distributed generator penetration in active distribution networks based on difference-of-convex programming

Cited by 63 publications

References 42 publications

E‐SOP's contribution in a techno‐economic and clean operation of distribution networks: A multi‐objective optimization approach based on linear models

E‐SOP's contribution in a techno‐economic and clean operation of distribution networks: A multi‐objective optimization approach based on linear models

Optimal placement, sizing, and daily charge/discharge of battery energy storage in low voltage distribution network with high photovoltaic penetration

Quantified analysis method for operational flexibility of active distribution networks with high penetration of distributed generators

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