Harmonics Interaction Mechanism and Impact on Extinction Angles in Multi-Infeed HVDC Systems

Yao, Wei; Wang, Lingrao; Zhou, Hongyu; Xiong, Yongxin; Wen, Jinyu

doi:10.1109/tpwrd.2023.3243412

Cited by 1 publication

(1 citation statement)

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“…The MIIF calculation method of the HMIDC considering DC control response characteristics is proposed [21]. Few studies focus on the MIIF of the HMIDC, though it is valuable for evaluating the voltage and power stability, the risk of LCC-HVDC commutation failure, and the interaction of harmonics [22][23][24]. In projects, VSC-HVDC can be equipped with voltage regulation control to enhance voltage stability, which affects the voltage interaction between the inverters.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Multi-Infeed Interaction Factor Calculation Method Considering Voltage Regulation Control Characteristics of Voltage Source Converter

Liu,

Chi,

Han

et al. 2024

ENERGY

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Voltage source converter based high voltage direct current (VSC-HVDC) can participate in voltage regulation by flexible control to help maintain the voltage stability of the power grid. In order to quantitatively evaluate its influence on the voltage interaction between VSC-HVDC and line commutated converter based high voltage direct current (LCC-HVDC), this paper proposes a hybrid multi-infeed interaction factor (HMIIF) calculation method considering the voltage regulation control characteristics of VSC-HVDC. Firstly, for a hybrid multi-infeed high voltage direct current system, an additional equivalent operating admittance matrix is constructed to characterize HVDC equipment characteristics under small disturbance. Secondly, based on the characteristic curve between the reactive power and the voltage of a certain VSC-HVDC project, the additional equivalent operating admittance of VSC-HVDC is derived. The additional equivalent operating admittance matrix calculation method is proposed. Thirdly, the equivalent bus impedance matrix is obtained by modifying the alternating current (AC) system admittance matrix with the additional equivalent operating admittance matrix. On this basis, the HMIIF calculation method based on the equivalent bus impedance ratio is proposed. Finally, the effectiveness of the proposed method is verified in a hybrid dual-infeed high voltage direct current system constructed in Power Systems Computer Aided Design (PSCAD), and the influence of voltage regulation control on HMIIF is analyzed. KEYWORDSHybrid multi-infeed high voltage direct current system; hybrid multi-infeed interaction factor; control modes; equivalent node impedance ratio; voltage interaction characteristics

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Section: Introductionmentioning

confidence: 99%