A Novel Interline DC Power-Flow Controller (IDCPFC) for Meshed HVDC Grids

Chen, Wu; Zhu, Xu; Yao, Liangzhong; Ning, Guangfu; Li, Yan; Wang, Zhibing; Gu, Wei; Qu, Xiaohui

doi:10.1109/tpwrd.2016.2547960

Cited by 67 publications

(31 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This kind of control scheme is simple to implement, but it can only adjust the equivalent resistance of the line in one direction, which limits its power flow control ability. (2) For the DC voltage control type DCPFC, according to the voltage regulation means, it can be further divided into three main types, which are 1 a DC transformer type [6][7][8][9][10], 2 an auxiliary voltage source type [11][12][13][14][15]] and 3 a capacitor-based interline energy-exchanged type [3,[16][17][18][19][20][21][22][23][24]. In comparison, the DCPFC of capacitor-based interline energy-exchanged type has more advantages and better application prospects.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, in order to simplify the CFC circuit structure, an improved CFC topology was proposed in reference [20], and its characteristics were detailed compared to the traditional CFC topology proposed in reference [16]. Based on the concept depicted in Figure 1b, by increasing the DC capacitor number and introducing coupled inductors, a novel type of IDCPFCs with independent connections of the capacitor in two lines were respectively investigated in references [3,[21][22][23]. In reference [24], the application modular multilevel converter (MMC) device was also considered, and an MMC-based IDCPFC was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In reference [24], the application modular multilevel converter (MMC) device was also considered, and an MMC-based IDCPFC was proposed. These schemes in reference [3,[21][22][23][24] avoided the capacitor switching in the line. However, it should be noted that all the above existing topologies are characterized by two-port characteristics, which can only assist in regulating the current on one line.…”

Section: Introductionmentioning

confidence: 99%

“…If the power flow control of multiple lines is required at the same time, the corresponding multi-port topology should be developed, and this problem is also an area that this paper deals with. in references [16][17][18][19][20]; (b) The dual-capacitor control type in references [3,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigate on a Simplified Multi-Port Interline DC Power Flow Controller and Its Control Strategy

Zhang

Long

et al. 2019

Energies

View full text Add to dashboard Cite

A DC power flow controller (DCPFC) can help to facilitate power flow routing in the multi-terminal high-voltage direct current (HVDC) transmission system. Realizing its multi-port output can effectively improve the device regulate range and capability. Based on analysis of the traditional multi-port interline DC power flow controller (MI-DCPFC), this paper presents a switches reduced topology of MI-DCPFC. In addition, for solving the problem of coupling of the port-output voltage of the traditional MI-DCPFC, a novel control strategy based on carrier phase shifting pulse width modulation (CPS-PWM) is proposed. It implements the decoupling of the port-output voltage of MI-DCPFC, which can ensure completely independent tracking of the power flow regulating commands for different controlled lines. Moreover, key relationships between the system state variables are also analyzed and detailed in this study. Finally, the performance of the proposed controller and control strategy are confirmed with the simulation and experiment studies under different conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigate on a Simplified Multi-Port Interline DC Power Flow Controller and Its Control Strategy

Zhang

Long

et al. 2019

Energies

View full text Add to dashboard Cite

show abstract

“…Furthermore, the European HVDC Study Group investigated basic principles to design and operate HVDC grid HVDC grid systems [6]. Inspired by these studies, a wide range of research has been conducted on HVDC grids, such as control [7][8][9][10][11][12], protection [13][14][15][16], and security [17].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Reliability Evaluation Method for Meshed VSC-HVDC Grids

et al. 2017

View full text Add to dashboard Cite

Abstract:High-voltage direct current (HVDC) grids are emerging, and their reliability has been an increasing concern for the utilities. HVDC grids are different from typical two-terminal HVDC transmission systems due to the loops in their topology, which makes it difficult to evaluate the reliability by conventional analytical methods. This paper proposes an innovative hybrid method to evaluate the reliability of meshed HVDC grids. First, steady-state models and reliability models are established for the components in HVDC grids, especially for converters and power flow controllers. In the models, virtual buses are introduced to represent the external AC connections to the HVDC grid. Then a hybrid reliability evaluation method is proposed based on an analytical approach and Monte Carlo simulation. One innovation of the paper is the application of an analytical analysis method to accelerate state evaluation in Monte Carlo simulation by skipping unnecessary optimization. The proposed models and methods are verified on two HVDC grids. Test results show that HVDC grids under most failure states (approximately 70%) tend to shed no load except on buses connected to faulted converters, and the application of the analytical method could promote evaluation efficiency significantly.

show abstract