Locating and sizing of partition flexible interconnection converter station in large urban power grids

Jiang, Xun; Xiao, Jun; She, Buxin; Zu, Guoqiang

doi:10.1049/iet-gtd.2018.6871

Cited by 5 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The existing researches on the operation state of partitions are mostly based on VSC-HVDC [8,10,34], but VSC-HVDC and LFAC are similar in terms of classification of operation states. This paper does not consider the extreme emergency condition, such as a partition may lose all power supplies from external sources.…”

Section: Operation State Of Partitionsmentioning

confidence: 99%

See 1 more Smart Citation

Frequency selection method for urban low frequency multi‐terminal interconnected systems

Zhang

2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

Large-scale urban power grid (LUPG) is normally under the operating mode by voltage layer and zone partition. One of the most important directions for the development of urban is to enhance the controllability by flexible low-frequency interconnection technology. In this study, a frequency selection method for urban low-frequency multi-terminal interconnected systems (ULFMIS) is proposed. Firstly, the required support power under different conditions, the index number of sending partition (SP) and receiving partition (RP) are determined. Secondly, by calculating the current distribution along the line under different support powers, the upper limit of the transmission frequency (ULTF) of each line is obtained. Finally, the smallest transmission frequency among the ULTFs of different tie lines is selected as the ULTF of the ULFMIS. The proposed method is validated in a typical four-terminal ULFMIS. The results demonstrate that the suggested method is suitable for calculating the ULTF taking account of the influence of the number of parallel lines on economic cost and provide guidance for future practical ULFMIS projects.

show abstract

Section: Operation State Of Partitionsmentioning

confidence: 99%

“…Partitions interconnection makes power support possible [8][9][10]. For the partition with greater load, in order to prevent the further expansion of the fault, the power support of adjacent partition is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Frequency selection method for urban low frequency multi‐terminal interconnected systems

Zhang

2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…The name of SOPs was used in [9] in 2010, emphasizing on the replacement of normally open points in distribution networks. Since its inception, different names were also used to describe such type of devices although they may have different focuses, such as DC-link [10], DC interlink [11], MVDC-link [12], [13], soft multi-state open point (SMOP) [14], loop balance controller (LBC) [15], [16], back-to-back active power controller (APC) [17], back-to-back system [7], [18], flexible interconnection device (FID) [19], partition flexible interconnection converter station (PFICS) [20], etc. Among these names, SOPs have been widely accepted by researchers and will be used in this paper.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Soft Open Points in Electricity Distribution Networks

Jiang

Zhou

Ming

et al. 2022

IEEE Trans. Smart Grid

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, as a new research field, some researchers have begun to pay attention to the application of VSC-HVDC in the urban power grid. In [10], the authors proposed a locating and sizing method of interconnected converter stations. According to the method, the optimum location and capacity of the converter station are well determined.…”

Section: Introductionmentioning

confidence: 99%

“…However, the control strategy of the DC system is not involved. On the basis of the [10], the detailed control strategy of a back-to-back VSC-HVDC interconnected two load areas of the urban power grid is proposed in [11]. In this paper, the proposed method includes load-balanced control, emergency support control and static voltage control.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Control Strategy of CU-MTDC under Abnormal Conditions Considering Power Supply Security

Wang

Liang

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

The coastal urban multi-terminal DC (CU-MTDC) is a prospective solution for enhancing the power supply security of the coastal urban power (CUP) grid and integrating the large-scale offshore wind farm. However, the large DC disturbances may significantly impact the CUP power supply security. The existing DC unbalanced power distribution methods are difficult to be applied in the CU-MTDC because of the complicated optimization process and the expansion of the influence range of a DC fault. To solve the above problems, this paper proposes a coordinated control strategy of CU-MTDC under abnormal conditions. First, calculation principles for the active power reference of center coastal urban power (CCUP) grid converters are proposed. Second, a DC unbalanced power coordinated distribution strategy under abnormal conditions is used based on the dynamic priority control to ensure power supply security of the critical AC lines. Third, the controller parameters of CCUP grid converters are calculated. Through a simple control process, the number of the regulation converters is dynamically scheduled according to the DC unbalanced power. The DC fault influence range on the urban power grid can be limited in a sufficiently small area. Simulation verified the effectiveness of the proposed control strategy.

show abstract

Locating and sizing of partition flexible interconnection converter station in large urban power grids

Cited by 5 publications

References 16 publications

Frequency selection method for urban low frequency multi‐terminal interconnected systems

Frequency selection method for urban low frequency multi‐terminal interconnected systems

An Overview of Soft Open Points in Electricity Distribution Networks

Coordinated Control Strategy of CU-MTDC under Abnormal Conditions Considering Power Supply Security

Contact Info

Product

Resources

About