DC power flow control in DC networks through DC/DC zero sequence blocking transformer

Khan, Muhammad Qasim; Huawei, Jiang; Zhao, Yi

doi:10.1109/iaeac.2017.8054193

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Starting from t2, and the current is transferred from the branch of V1b, UFD1 and UFD2 to the branch of T1a and T2a. During the period of t2~t3, regardless of the thyristor on-state power losses, the current is still expressed as equation (6).…”

Section: B Analysis Of Fault Current Limiting and Clearancementioning

confidence: 99%

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DC Current Flow Controller With Fault Current Limiting and Interrupting Capabilities

et al. 2021

IEEE Trans. Power Delivery

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Conventionally, the current flow control and DC fault protection issues of HVDC grids are supposed to be solved by the DC current flow controller (CFC) and DC circuit breaker (DCCB) separately, which may result in a high capital cost. This paper proposes a CFC topology with DC fault current limiting and interrupting capabilities. The topology and operating principle of the CFC are presented with theoretical analysis. The control strategies under normal and fault conditions are described. In order to reduce the use of IGBTs, an H-bridge inter-line CFC with fault current limiting capability is further proposed based on the proposed CFC. The proposed CFCs are tested in PSCAD/EMTDC. Simulation results show that the proposed two CFCs can effectively control the current flow of two lines during normal operation and limit and interrupt DC fault currents.

show abstract

Section: B Analysis Of Fault Current Limiting and Clearancementioning

confidence: 99%

“…The value of i12(t3+) can be obtained from (6) and (8). Substituting it into (9), the line fault current i12 is expressed as ( ) (…”

Section: ) T3~t4mentioning

confidence: 99%

DC Current Flow Controller With Fault Current Limiting and Interrupting Capabilities

et al. 2021

IEEE Trans. Power Delivery

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Enhancing Power Flow control in MT-HVDC system with Novel SST-based IDCPFC topology

Khan,

Nawaz

et al. 2024

Electric Power Systems Research

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Stability Analysis and Control Design for Multiterminal HVDC Network With Power Flow Controller

Khan

Nawaz

et al. 2023

IEEE Can. J. Electr. Comput. Eng.

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DC power flow control in DC networks through DC/DC zero sequence blocking transformer

Cited by 3 publications

References 9 publications

DC Current Flow Controller With Fault Current Limiting and Interrupting Capabilities

DC Current Flow Controller With Fault Current Limiting and Interrupting Capabilities

Enhancing Power Flow control in MT-HVDC system with Novel SST-based IDCPFC topology

Stability Analysis and Control Design for Multiterminal HVDC Network With Power Flow Controller

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