Impact of LCC-HVDC and VSC-HVDC Infeed on Weak-Receiving-End Grid Characteristics

doi:10.3969/j.issn.1000-7229.2016.04.013

Abstract

Abstract:

With the DC voltage level upgrading and transmission capacity increasing, the voltage source converter based high voltage direct current （VSC-HVDC ） plays a more important role in the optimal allocation of large capacity resources over a long distance. In the previous studies, the technology performance of VSC-HVDC was analyzed by using the virtual small grid and electromagnetic transient simulation software. The study results of the dynamic performance validation for the actual AC grid were reported rarely. In this paper, the DA simulation model in line commutated converter based high voltage direct current （LCC-HVDC ） and VSC-HVDC simulation models developed newly by PSD-BPA are introduced and the technical characteristics of these models are analyzed firstly. On this basis, aimed to the Tibetan AC weak power grid, the transient recovery characteristics of receiving-end grid with large disturbance impact are compared under two different power transmission programs. The simulation results can provide technical support to apply VSC-HVDC to improve the disturbance characteristics of weak -receiving-end grid and grid stable level.

Key words: high voltage direct current （HVDC）, voltage source converter based high voltage direct current （VSC-HVDC）, electromechanical transient, simulation model, recovery characteristic

CLC Number:

TM 72

ZHENG Chao, YANG Jingang, TENG Yufei, LI Huiling, LYU Sizhuo. Impact of LCC-HVDC and VSC-HVDC Infeed on Weak-Receiving-End Grid Characteristics[J]. Electric Power Construction, 2016, 37(4): 84-90.

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