A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

Khan, Muhammad Omer; Jamali, Saeed Zaman; Noh, Chul-Ho; Gwon, Gi-Hyeon; Kim, Chul‐Hwan

doi:10.3390/en11020367

Cited by 24 publications

(9 citation statements)

References 37 publications

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“…In the process of model design, the investment cost, operation cost and equipment maintenance cost [12][13] are taken as one of the main reference contents of the model, and the toughness enhancement technology is used to process the three parts of data. Under the premise of system decision-making permission, this constraint condition is compromised with the objective function, and the following formula is obtained [18] .…”

Section: Construction Of Distribution Network Planning Mathematical Modelmentioning

confidence: 99%

Research on energy storage depth planning of AC / DC distribution network based on toughness enhancement technology

Hu¹

2021

E3S Web Conf.

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At present, due to the abnormal objective function setting result of AC / DC distribution network energy storage depth planning method, the operation cost of power supply network has been increased frequently. Therefore, the energy storage depth planning method of AC / DC distribution network based on toughness enhancement technology is designed. The minimum peak valley difference, maximum load rate and minimum load change are taken as the energy storage depth planning objectives of AC / DC distribution network. The economic mathematical model of distribution network planning is constructed by using toughness enhancement technology and objective function to complete the in-depth planning of distribution network. So far, the energy storage depth planning method of AC / DC distribution network based on toughness enhancement technology has been completed. Simulation experiment has been constructed. Through the comparison, it can be seen that this method has better effect than the original method, possessing stronger control ability for operation components.

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Section: Construction Of Distribution Network Planning Mathematical Modelmentioning

confidence: 99%

Research on energy storage depth planning of AC / DC distribution network based on toughness enhancement technology

Hu¹

2021

E3S Web Conf.

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“…Developments in power electronics have made it possible for DC networks to fulfill future high quality energy demands [1,2]. A low voltage DC (LVDC) distribution network has high efficiency and is more compatible for the integration of distributed generation (DG) because of the absence of the frequency and phase angle [3,4].…”

Section: Motivationmentioning

confidence: 99%

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

et al. 2018

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A low voltage direct current (LVDC) distribution network is a promising technology to meet the standards of future energy demands for smart loads. An LVDC distribution network can not only supply efficient, smooth and clean energy, but also makes the integration of renewable energy resources in the distribution system easy. A major obstacle in the implementation of the LVDC distribution network is the protection of the network during abnormal grid conditions, such as transients and faults. This paper analyzes DC fault characteristics considering an LVDC distribution network, highlights the worst case scenario during a fault and protection related issues and proposes the protection schemes for the LVDC network. In the proposed protection scheme, a fault is detected and located through superimposed components. To minimize the effect of the DC fault on the distribution network, distributed fault current limiters are introduced and the final decision to disconnect or reconnect the affected line is made on the basis of the type of fault. In addition, a reclosing scheme for a temporary fault is proposed to avoid high inrush currents and false tripping, which eventually increases the reliability. A fast communication-based backup protection is also suggested, and to reduce dependency, a secondary backup is used in the case of communication delay or failure. The proposed scheme is verified using the modified IEEE 13 node test system, which is implemented in ATPDraw. The results show that the proposed scheme can successfully detect, locate and limit a DC fault in an LVDC distribution network with different fault resistances or locations. Moreover, the network is restored successfully in the case of temporary faults.

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“…On the other hand, recent developments in the power electronics area has resulted in an advancement in a distribution network. As compared to the advantages of the conventional AC distribution network and DC distribution network [2,3], the most practical network architecture for the future distribution systems is an AC-DC hybrid distribution network [4]. The advantages of a AC-DC hybrid distribution network can be highlighted in terms of the use of simplified equipment for end-users, reduction in power conversion losses, and efficient integration of DERs [5].…”

Section: Introductionmentioning

confidence: 99%

Minimization of Network Power Losses in the AC-DC Hybrid Distribution Network through Network Reconfiguration Using Soft Open Point

et al. 2021

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The Alternating Current-Direct Current (AC-DC) hybrid distribution network has received attention in recent years. Due to advancement in technologies such as the integration of renewable energy resources of DC–type output and usage of DC loads in the distribution network, the modern distribution system can meet the increasing energy demand with improved efficiency. In this paper, a new AC-DC hybrid distribution network architecture is analyzed that considers distributed energy resources (DER) in the network. A network reconfiguration scheme is proposed that uses the AC soft open point (AC-SOP) and the DC soft open point (DC-SOP) along with an SOP selection algorithm for minimizing the network power losses. Subsequently, the real-time data for DER and load/demand variation are considered for a day-a-head scenario for the verification of the effectiveness of the network reconfiguration scheme. The results show that the proposed network reconfiguration scheme using AC-SOP and DC-SOP can successfully minimize the network power losses by modifying the network configuration. Finally, the effectiveness of the proposed scheme in minimizing the network power losses by the upgraded network configuration is verified by constructing an AC-DC hybrid distribution network by combining two IEEE 33-bus distribution networks.

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A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

Cited by 24 publications

References 37 publications

Research on energy storage depth planning of AC / DC distribution network based on toughness enhancement technology

Research on energy storage depth planning of AC / DC distribution network based on toughness enhancement technology

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

Minimization of Network Power Losses in the AC-DC Hybrid Distribution Network through Network Reconfiguration Using Soft Open Point

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