Model and observation of dispatchable region for flexible distribution network

Xiao, Jun; Zu, Guoqiang; Wang, Ying; Zhang, Xinsong; Jiang, Xun

doi:10.1016/j.apenergy.2019.114425

Cited by 20 publications

(10 citation statements)

References 25 publications

(36 reference statements)

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“…Active and reactive power injections at nodes 4 and 5 were variable, under the assumption that distributed generators are installed at node 4 and 5, with inverters capable of controlling the reactive power. The rating of the branch between nodes 2 and 3 (i.e., 6.82 MVA) is used as the rating of the feeder for error normalization (see (10) and ( 11)). The P 4 -P 5 , P 4 -Q 5 and Q 4 -Q 5 cross-sections of FOR of this feeder were selected to observe the hosting capacity of nodes 4 and 5.…”

Section: Case Studymentioning

confidence: 99%

“…Though developed and mainly applied in transmission networks, in recent years the operation region-based methodology starts to be applied to distribution networks. In [10], dispatchable region was defined to represent all the feasible operation states which satisfy the thermal and voltage constraints of distribution networks. In this study, a simulation-based approach was used to visualize the two-dimensional and threedimensional cross-sections of the dispatchable region.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasible Operation Region of a Distribution Network Considering Thermal Constraints

Xun¹,

Jiang²,

Wu³

et al. 2022

Preprint

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Section: Case Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasible Operation Region of a Distribution Network Considering Thermal Constraints

Xun¹,

Jiang²,

Wu³

et al. 2022

Preprint

Self Cite

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“…An FDN is defined as the distribution network with flexible power flow controllability using multiterminal SOPs (including twoterminal SOPs). The article (Xiao et al, 2017a) proposes the total supply capability (TSC) of the FDN. The articles (Xiao et al, 2017b) and (Xiao et al, 2020) adopt the region method to observe the FDN and propose the model and observation approach of the dispatchable region of the FDN.…”

Section: Introductionmentioning

confidence: 99%

“…The article (Xiao et al, 2017a) proposes the total supply capability (TSC) of the FDN. The articles (Xiao et al, 2017b) and (Xiao et al, 2020) adopt the region method to observe the FDN and propose the model and observation approach of the dispatchable region of the FDN. However, the DG accommodation in the FDN has not been studied yet in the existing researches.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Distributed Generation Accommodation in Flexible Distribution Networks

Xiao

Wang

2021

Front. Energy Res.

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This work proposes a method to analyze distributed generation (DG) accommodation in a flexible distribution network (FDN). Firstly, the DG-load matching degree is proposed to quantitatively describe the power balance degree of DG and load in a distribution network. Secondly, the accommodation ratio of DG is proposed and divided into a DG-load accommodation ratio and DG-network-load accommodation ratio, to distinguish whether the index takes the network operational constraints into account. We derive the DG-load accommodation ratio directly from the matching degree and propose the simulation model of sequential production to solve the DG-network-load accommodation ratio. Finally, the cases of FDN under the scenarios of different matching degrees are studied and compared with those of the traditional rigid distribution network. The results show that the improvement of the accommodation ratio by upgrading the rigid distribution network to an FDN is conditional, which is related to not only the matching degree of the whole network but also that of each local network. The DG-network-load accommodation ratio will tend to the DG-load accommodation ratio if proper planning or optimization measures are taken. We find that the capacity of branches adjacent to the DG bus mainly limit the DG accommodation in the FDN, and it is recommended to relocate the DGs and enlarge the capacity of those branches.

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“…Since DSSR is a high‐dimensional geometry in the state space, 5 observation is the most direct way to discover its characteristics in shape and size 20 . Meanwhile, the TSC curve, a key index of DSSR, can be easily obtained and visually observed through the mathematical model of DSSR.…”

Section: Introductionmentioning

confidence: 99%

Application of geometrical observation of security region in distribution network enhancement

Xiao

Qiu

et al. 2021

Int Trans Electr Energ Syst

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Summary This paper applies the geometrical observation of security regions in distribution network enhancement. Firstly, the concepts of distribution system security region (DSSR) and total supply capability (TSC) curve are introduced. Secondly, to observe DSSR and TSC more intuitively, new geometrical shape figures of DSSR such as the spiral figure of the region, the radar figure of boundary, and the concave figure of the boundary are proposed. New geometrical indexes, such as radius of DSSR, area of shape figure, shape distortion indexes and concavity indexes are also proposed. The proposed indexes and figures can fully describe the security and efficiency of a given distribution network from the perspective of the size and shape of DSSR. Thirdly, the indexes family are proposed, and the concrete method of the distribution network enhancement is presented based on the indexes family. Finally, the expanded IEEE‐RBTS‐BUS4 case is used to verify the proposed method. The results show that the proposed method can intuitively show the changes of the enhanced distribution network in the terms of DSSR and TSC curves. This paper proposes a new observation method and analysis tool for the distribution network from the perspective of security and efficiency, which is an important supplement to the traditional enhancement of the distribution network.

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Model and observation of dispatchable region for flexible distribution network

Cited by 20 publications

References 25 publications

Feasible Operation Region of a Distribution Network Considering Thermal Constraints

Feasible Operation Region of a Distribution Network Considering Thermal Constraints

Analysis of Distributed Generation Accommodation in Flexible Distribution Networks

Application of geometrical observation of security region in distribution network enhancement

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