Equivalent Electromagnetic Transient Simulation Model and Fast Recovery Control of Overhead VSC-HVDC Based on SB-MMC

Xiang, Wang; Lin, Weixing; An, Ting; Wen, Jinyu; Wu, Yanan

doi:10.1109/tpwrd.2016.2607230

Cited by 63 publications

(44 citation statements)

References 22 publications

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“…Self‐blocking SM (SBSM)‐based MMC equivalent model consisting of HBSMs and SBSMs and a fast recovery control strategy of HVDC system based on SBMMC are presented in Xiang et al Proposed model has DC fault current blocking capability using less SDs. Simulation speed for different levels is also compared to show the quickness of the models.…”

Section: Circuit Topology and Modellingmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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Summary The modular multilevel converters (MMCs) are frequently preferred for medium and high power energy conversion systems thanks to their modular structure and high quality output waveform. The remarkable studies related to the MMC have been carried out in recent years, which are mainly focused on its topology, control, or application. In this paper, MMC circuit topologies consisting of traditional submodule cells and new proposed configurations are introduced, and their control process, modulation techniques, and application areas are discussed in order to provide the readers the current state of the art of MMC technology. A wide part of this article is devoted to demonstrate the recent contributions arising in MMC studies. In this context, this paper not only outlines the circuit topology, control objectives, and applications of the MMC but also presents a comprehensive review, principally in terms of the latest developments of it. Ultimately, detailed proposals and new possible topics are provided to drive future expectations of MMC technology.

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Section: Circuit Topology and Modellingmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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“…In [17], operating constraints regarding modulation signals, the arm current, the sub-module capacitor voltage ripple, the AC current and the DC current are considered. (19) In this paper, the sorting and selection algorithm is not considered in detail to simplify the analysis. Considering that the hybrid MMC is able to operate under extreme small DC voltages, the corresponding active power is small due to the current constraints, which may bring challenges to the setting of the scanning range and varying step for active power.…”

Section: A Operating Constraintsmentioning

confidence: 99%

State-space model and PQ operating zone analysis of hybrid MMC

Lin

Wen

2018

Electric Power Systems Research

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Abstract-A steady-state time-invariant (SSTI) state-space model is proposed in this paper for the hybrid modular multilevel converter (hybrid MMC). To analyze the internal dynamics of the hybrid MMC, the phasor modelling method is employed with considering three different frequency components in modulation signals. Originating from the state-space model, the steady-state model is obtained for analytically illustrating operating characteristics of the hybrid MMC. A 'scan and check' method is proposed to determine the feasible PQ operating zone of the hybrid MMC with considering multiple operating constraints, especially the requirement for successful voltage balancing of half-bridge sub-modules (HBSMs). The accuracy of the state-space model is verified by comparing the time-domain response with the equivalent electromagnetic model of a hybrid MMC in PSCAD/EMTDC. Feasible operating zones of the tested system under different DC terminal voltages are calculated. The effects of different operating constraints on limiting the PQ operating zone are analyzed. The impact of converter parameters such as the sub-module ratio, the arm reactance and the sub-module capacitance on the operating zone is presented in detail.

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“…The design of protection scheme for MMC-HVDC systems includes detection activation, fault detection, fault identification and post-fault restoration [12]. Most of the existing publications focus on the design of fault detection and identification algorithms [13]- [25]. In [13] and [14], the methods using the over-current and under-voltage criteria are proposed which suffer from low selectivity.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the existing publications focus on the design of fault detection and identification algorithms [13]- [25]. In [13] and [14], the methods using the over-current and under-voltage criteria are proposed which suffer from low selectivity. Fault detection using the derivate of DC line current is tested in [15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Transient Voltage-Based DC Fault Line Protection Scheme for MMC-Based DC Grid Embedding DC Breakers

Xiang

Yang

et al. 2019

IEEE Trans. Power Delivery

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205

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Abstract-Fast and reliable DC fault detection is one of the main challenges for modular multilevel converter (MMC) based DC grid with DC circuit breakers (DCCBs). This paper extracts the high frequency components of transient voltages by wavelet transform and proposes a fault identification method based on the difference of transient voltages to identify the faulted lines for DC grids using overhead lines. Meanwhile, a faulted pole discrimination method based on the difference between the change of positive and negative pole voltages is presented. A line protection scheme including detection activation, fault identification, faulted pole discrimination and post-fault re-closing is designed. Using only the local measurements, the scheme can realize the protection of the whole line without communication and has the capability of fault resistance endurance and anti-disturbance. The proposed method is tested with a four-terminal MMC based DC grid in PSCAD/EMTDC. The selection methods of threshold values are presented and the impact of DCCB operation on the reliability of DC fault protection is analysed. Simulation results verify the fast detection and reliability of the designed DC line protection scheme. Index Terms-DC fault protection, fault identification, transient voltage, hybrid DC breaker, modular multilevel converter (MMC), post-fault re-closing.This paper is a post-print of a paper submitted to and accepted for publication in IEEE Transaction on Power Delivery and is subject to Institution of Electrical and Electronic Engineering

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Equivalent Electromagnetic Transient Simulation Model and Fast Recovery Control of Overhead VSC-HVDC Based on SB-MMC

Cited by 63 publications

References 22 publications

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

State-space model and PQ operating zone analysis of hybrid MMC

A Transient Voltage-Based DC Fault Line Protection Scheme for MMC-Based DC Grid Embedding DC Breakers

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