防止径向型 ± 35 kV 中压直流配电系统大面积停电的智能故障隔离装置设计

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Kyung-Hwa Kim, Ji-Myung Kim, Sung-Moon Choi, Ye-Bin Lee, Na-Kyung Lee, Dae-Seok Rho
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引用次数: 0

摘要

在中压直流配电系统中,当二次馈线发生故障时,考虑到主变流器停机前一次馈线和二次馈线保护装置的动作时间间隔,要求保护装置的动作方式能够实现更好的保护协调,以尽量减少一次馈线的中断区域。因此,本文提出了一种智能故障隔离装置(IFID),用于瞬时钳制和消耗故障电流,以防止径向型中压直流配电系统中主变流器停机。此外,该装置同时安装在主变流器和分段变流器中,其运行机制分为初始运行模式、辅助运行模式、主运行模式和恢复模式等 4 种模式。根据使用 PSCAD/EMTDC 对 IFID 建模的仿真结果,证实了所提出的装置是一种有用的工具,可通过防止主变流器停机来隔离故障区段,并确保 MVDC 和 LVDC 馈电保护协调的运行时间间隔。此外,还证明了主变流器可以连续运行,并且由于分段变流器隔离了故障段,因此可以向初级馈线中的无故障段供电。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Design of Intelligent Fault Isolation Device to Prevent Wide-Area Power Outage in Radial-Type ± 35 kV MVDC Distribution System

Design of Intelligent Fault Isolation Device to Prevent Wide-Area Power Outage in Radial-Type ± 35 kV MVDC Distribution System

When a fault in secondary feeder is occurred in MVDC distribution system, the operation method of protection devices is being required to achieve better protection coordination in order to minimize interruption region in primary feeder, considering the operation time interval of the protection devices in primary and secondary feeder before the shut-down of the main converter. Therefore, this paper presents an intelligent fault isolation device(IFID) to instantaneously clamp and consume the fault current in order to prevent shut-down of main converter in radial-type MVDC distribution system. And also, the proposed device is installed in both main converter and section converter, its operation mechanism is categorized as 4 modes such as initial operation mode, auxiliary operation mode, main operation mode and restoration mode. From the simulation results based on modeling of the IFID using PSCAD/EMTDC, it is confirmed that the proposed device is a useful tool to isolate fault section by preventing shut-down of main converter and securing operation time interval for protection coordination in MVDC and LVDC feeders. And also, it is founded that the main converter can be continuously operated and then unfaulted sections in primary feeder can be supplied as the faulted section is isolated by section converter.

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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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