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一种用于LCC-HVDC输电系统的可控晶闸管换相失败抑制器

A Controllable Thyristor-Based Commutation Failure Inhibitor for LCC-HVDC Transmission Systems

语言:

中文摘要

换相失败是电网换相高压直流(LCC-HVDC)输电系统中的严重故障,主要由逆变侧交流故障引起,导致功率中断及设备损坏。本文提出了一种可控换相失败抑制器(CCFI),有效克服了现有技术在抑制换相失败方面的局限性,提升了直流输电系统的稳定性。

English Abstract

Commutation failure is a serious malfunction in line-commutated high voltage direct current (HVdc) converters which is mainly caused by the inverter ac faults, and results in a temporary interruption of transmitted power and damage to the converter equipment. In this article, a controllable commutation failure inhibitor (CCFI) is developed which obviates the main drawbacks of the existing power el...
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SunView 深度解读

该技术主要针对特高压直流输电(LCC-HVDC)领域,与阳光电源现有的光伏逆变器、储能系统及风电变流器产品线关联度较低。然而,随着新能源大规模接入,电网强度减弱,该研究中涉及的“换相失败抑制”与“弱电网下并网稳定性”技术逻辑相通。建议研发团队关注其在提升大型光伏/储能电站并网点电压支撑能力方面的借鉴意义,特别是针对构网型(GFM)储能系统在弱电网环境下的故障穿越与稳定性控制策略,可作为未来提升电网适应性技术的参考。