Study of Security Protection on Power Industrial Control System

Li, Feng; Wang, Xu; Li, Yang; Guo, Qingrui; Chen, Tao

doi:10.12783/dtcse/aice-ncs2016/5733

Cited by 1 publication

(1 citation statement)

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“…The above studies mainly focus on the pole-to-pole DC transmission system. However, there are new problems to be considered for the receiving end hybrid LCC-VSC system: 1) To reduce the possibility of phase change failure of the converter, the LCC is usually equipped with a voltage dependent current order limiter (VDCOL) [10][11]. Therefore, it is necessary to consider the impact of VDCOL on the operating characteristics of the system under different fault conditions and the coordination with the VSC control of the low-voltage valve group.…”

Section: Introductionmentioning

confidence: 99%

Coordinated DC voltage control strategy for the receiving end hybrid LCC-VSC system

Zhou,

Luo,

et al. 2024

J. Phys.: Conf. Ser.

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The receiving end hybrid line commutated converter (LCC) — voltage source converter (VSC) system has the obstacle that when an AC fault occurs at the sending LCC side, the DC voltage of the rectifier side will fall, resulting in the power transmission reduction of the whole system. Particularly, when the rectifier side DC voltage falls below the inverter side DC voltage, the power transmission is interrupted, posing a huge threat to the stability of the power grid at both the sending and receiving ends. To tackle these problems, a coordinated DC voltage control strategy for the receiving end is proposed. By controlling the DC voltage of the receiving VSC, the proposed method can improve the DC system power transmission capability when voltage drops at the sending side. The proposed control strategy is simple but practical, which is good for the stable and secure operation of both the sending and the receiving power system.

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Section: Introductionmentioning

confidence: 99%