Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems

Zhi Geng; Minxiao Han; Changjiang Xia; Longze Kou

doi:10.17775/CSEEJPES.2021.01710

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems

Regular Papers | 更新时间：2026-10-15

- Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems
- Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems
- 中国电机工程学会电力与能源系统学报(英文) 2024年10卷第4期页码：1642-1653
- 作者机构：
  
  1. School of Electrical and Electronic Engineering, North China Electric Power University (NCEPU),Beijing,China
  2. State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.01710
  中图分类号：
- 纸质出版：2024-07-01
- 稿件说明：
移动端阅览
Zhi Geng, Minxiao Han, Changjiang Xia, 等. Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(4):1642-1653.

Zhi Geng, Minxiao Han, Changjiang Xia, et al. Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems[J]. CSEE Journal of Power and Energy Systems, 2024, 10(4): 1642-1653.
Zhi Geng, Minxiao Han, Changjiang Xia, 等. Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(4):1642-1653. DOI： 10.17775/CSEEJPES.2021.01710.

Zhi Geng, Minxiao Han, Changjiang Xia, et al. Currentless Multiple Switch Open-Circuit Faults Diagnosis for Modular Multilevel Converters with Nearest Level Modulation in HVDC Systems[J]. CSEE Journal of Power and Energy Systems, 2024, 10(4): 1642-1653. DOI： 10.17775/CSEEJPES.2021.01710.

摘要

Abstract

Due to the large number of submodules (SMs)

and modular multilevel converters (MMCs) in high-voltage applications

they are usually regulated by the nearest level modulation (NLM). Moreover

the large number of SMs causes a challenge for the fault diagnosis strategy (FDS). This paper proposes a currentless FDS for MMC with NLM. In FDS

the voltage sensor is relocated to measure the output voltage of the SM. To acquire the capacitor voltage and avoid increasing extra sensors

a capacitor voltage calculation method is proposed. Based on the measurement of output voltages

the faults can be detected and the number of different-type switch open-circuit faults can be confirmed from the numerous SMs in an arm

which narrows the scope of fault localization. Then

the faulty SMs and faulty switches in these SMs are further located without arm current according to the sorting of capacitor voltages in the voltage balancing algorithm. The FDS is independent of the arm current

which can reduce the communication cost in the hierarchical control system of MMC. Furthermore

the proposed FDS not only simplifies the identification of switch open-circuit faults by confirming the scope of faults

but also detects and locates multiple different-type faults in an arm. The effectiveness of the proposed strategy is verified by the simulation results.

关键词

Keywords

references

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

Multi-Degree-of-Freedom Control Framework for HVDC Transmission Converters

High Efficient Design of a Reconfigurable Step-Up DC-DC Converter with Fault-Tolerant Capability

Simulation Analysis of DC Fault Interruption Characteristics of Superconducting Electric Aircraft Propulsion

Data-Driven Fault Detection of Multiple Open-Circuit Faults for MMC Systems Based on Long Short-Term Memory Networks

Mixed Dead-Time Effect Suppression Strategy for Modular Multilevel Converters