Voltage support strategy of SNOP under fault circumstance

Li, Yuze; Pan, Xing; Kang, Yong; Lü, Yi; Xu, Feng

doi:10.1109/apec.2019.8722092

Cited by 12 publications

(8 citation statements)

References 11 publications

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“…Different from the traditional AC/DC distribution network, in this study we use SOP as the key equipment of multi-station integration systems, which can solve the problems of the AC/DC distribution network by implementing the two-end power supply. SOP can respond to the running state of the system in real-time and optimize the power flow distribution of the system and are promising to meet the requirements of future flexible distribution networks for primary flexible equipment (Ji et al, 2017;Liang et al, 2018;Li et al, 2019). Figure 1 shows the proposed multi-station integration topology with an SOP.…”

Section: Proposed Topology Of Multi-station Integrationmentioning

confidence: 99%

Research on the Application of SOP in Multi-Station Integrated System

et al. 2021

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The current large-scale access to distributed power and the rapid growth of electric vehicles are seriously affecting the reliability of distribution networks. The new multi-station fusion technology based on the flexible interconnection of the distribution network can effectively solve this problem. In this study, we design a multi-purpose station and a multi-function device using a soft normally open point (SOP). A new multi-station integration topology and a coordinated control strategy are developed using an active power signal (APS) and an energy management system (EMS). The coordinated control strategy involves sending out the corresponding operation mode command after the EMS receives the superior instruction or the APS of the local system and coordinating the operation mode of the SOP, energy storage DC/DC converter, and photovoltaic DC/DC converter, thereby ensuring stable and efficient operation of the multi-station fusion system. Finally, two typical cases are simulated to verify the feasibility and effectiveness of the proposed topology and control strategy.

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Section: Proposed Topology Of Multi-station Integrationmentioning

confidence: 99%

Research on the Application of SOP in Multi-Station Integrated System

et al. 2021

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Section: A Control Of Sop During Normal Conditionmentioning

confidence: 99%

“…Resistance-reactance R/X ratio data of lines in DNs is used to generate the [51] for voltage support during balanced voltage drop. In [51], 3T-SOP is based on half-bridge MMC where two MMCs are working in P -Q and another one in u dc -Q control mode. Voltage support depends on the injection of active and reactive current based on the various values of the R/X ratio where voltage magnitude changes on the values of the R/X ratio.…”

Section: A Control Of Sop During Normal Conditionmentioning

confidence: 99%

Soft Open Point in Distribution Networks

et al. 2020

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The main objective of this paper is to present a comprehensive review of soft open point (SOP), an emerging power electronics technology to maximize future distribution networks' (DNs) resiliency and flexibility as well as increase hosting capacity for distributed energy resources like photovoltaics and electric vehicles. The SOP is currently an active area of research and ongoing development of new control techniques for SOP and optimization algorithm for the optimal use of SOP in DNs produces new techniques until DN operators use it comprehensively in their systems. The motivation for this work is to present the research that has been completed for the SOP and summarize the duties of SOP in DNs according to the literature and propose advanced duties for SOP according to modern standards. Finally, future research directions are mentioned to pave the way for research in the coming years to drive the DNs towards more flexibility and 'Robust' from controllability, stability, and protection structure point of view. INDEX TERMS Distribution networks, grid-connected converters, power electronics, soft open point, normally open points.

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“…Finally, it should be noted that we do not consider in this paper SOP based on modular multilevel converter (MMC) topologies, which are recently proposed as an alternative to the B2B 2-or 3-level voltage source converter (VSC) configuration, especially for MV applications; see [19][20][21][22][23]. See [22] for a comparison between the two structures in terms of PQ operating area.…”

Section: Of 18mentioning

confidence: 99%

“…In [22], an analysis of the operating areas of the MMC structure in comparison to a back-to-back structure is presented. In [23], the behavior of an MV S(N)OP device in normal and fault conditions has been analyzed. In [24], the authors proposed an optimal power flow calculation method for an unbalanced distribution network making use of a split-phase S(N)OP.…”

Section: Introductionmentioning

confidence: 99%

15 kVA Three-Phase Low-Voltage SOP Prototype Laboratory Tests Results

et al. 2020

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In this paper, a 15 kVA soft open point converter is presented. The converter design and manufacturing have been presented in previous papers. The aim of this paper was to show the results of the devices in a full-scale laboratory environment, Gridlab, made of four distribution LV feeders, each rated 40 A. The tests demonstrated the good dynamics of the SOP control and its usefulness in performing a suitable PQ control. They also showed an improvement in the voltage profile and in the load capacity of the overall network. In the final part of the paper, the feedback earned during the development and the test of this first prototype are presented. This feedback will benefit the team for the design of a new improved 50 kVA version.

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Voltage support strategy of SNOP under fault circumstance

Cited by 12 publications

References 11 publications

Research on the Application of SOP in Multi-Station Integrated System

Research on the Application of SOP in Multi-Station Integrated System

Soft Open Point in Distribution Networks

15 kVA Three-Phase Low-Voltage SOP Prototype Laboratory Tests Results

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