Research on Coordination and Optimal Configuration of Current Limiting Devices in HVDC Grids

Mashino, Jun; Gao, Fan; Wang, Bingbing; Zhu, Pengfei; Yan, Lingxiao

doi:10.1109/access.2019.2930748

Cited by 20 publications

(13 citation statements)

References 40 publications

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“…This means multiple sets of solutions may exist to achieve the required converter DC-FRT behaviour and system restoration speed. A multi-objective optimization approach has thus been taken to coordinate the design of DCCBs in HVDC grids [97,98,127,128].…”

Section: Coordinated Design Of Dccbs In Fully Selective Protection Strategiesmentioning

confidence: 99%

“…Both time-domain simulations [127,128] and analytical approximations [97,98] are used to find the optimal sets of parameters, such as inductance, breaker opening time, breaker interruption capability and breaker energy absorption capability. A multi-objective genetic algorithm (GA) is proposed in [127] to optimize key parameters of a hybrid DCCB using a combined Matlab-EMTP implementation.…”

Section: Coordinated Design Of Dccbs In Fully Selective Protection Strategiesmentioning

confidence: 99%

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Multi‐vendor interoperability in HVDC grid protection: State‐of‐the‐art and challenges ahead

Wang

Leterme

Chaffey

et al. 2021

IET Generation Trans & Dist

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Multi-vendor interoperable HVDC grid protection is key to build large-scale HVDC grids in a step-by-step manner. On the one hand, various protection strategies and technologies have been developed in the past decade to address the challenges associated with HVDC grid protection. On the other hand, state-of-the-art HVDC technologies are often vendorspecific and there is a general lack of standardisation on HVDC systems as the majority of existing HVDC systems have been built by single vendors as turn-key projects. In recent years, driven by the need to develop multi-vendor HVDC grids, both national and international standardisation bodies have been working on guidelines and pre-standardisation for HVDC systems. This paper provides a comprehensive review of the recent progress on HVDC grid protection focusing on multi-vendor interoperability and identifies the main challenges to achieve interoperable HVDC grid protection. Compared to AC system protection, the fundamental differences of multi-vendor interoperability in HVDC grid protection are the possible co-existence of multiple protection philosophies and the extended scope of the fault clearing process in terms of protection and control. The challenges and research needs related to multi-vendor HVDC grid protection due to these fundamental differences are identified.

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Section: Coordinated Design Of Dccbs In Fully Selective Protection Strategiesmentioning

confidence: 99%

Section: Coordinated Design Of Dccbs In Fully Selective Protection Strategiesmentioning

confidence: 99%

Multi‐vendor interoperability in HVDC grid protection: State‐of‐the‐art and challenges ahead

Wang

Leterme

Chaffey

et al. 2021

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…In recent years, many topologies of DCCB have been proposed in the literature. Among them, the hybrid DCCB, which has fast current interruption capabilities, has drawn the greatest attention from a commercial perspective [12], [24]. Unlike a common circuit breaker, the hybrid DCCB contains a main DC breaker, an additional low-loss branch as well as an energy dissipation branch [11].…”

Section: A DC Fault Clearingmentioning

confidence: 99%

Assessment of Low-Loss Configurations for Efficiency Improvement in Hybrid Modular Multilevel Converters

et al. 2021

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Hybrid modular multilevel converters (HMMC) address the DC-fault blocking limitations of the half-bridge submodules (HB-SMs) of the standard MMC by combining HB-SMs with full-bridge submodules (FB-SMs). In order to improve the overall conversion efficiency, this article proposes two lowloss configurations for the HMMC. The main improvement in the proposed HMMCs is achieved by the combination of low-loss unipolar and low-loss bipolar SMs in the same arm of the HMMC. It is shown that the simplest structure (LLH1) can reduce the SM losses (switching and conduction losses in an SM) by 30% compared to the HMMC at the cost of limited fault blocking capabilities. The fully controlled structure (LLH2) reduces SM losses by 10% compared to the HMMC, and 30% compared to the FBSM-based MMC. These results represent an increase of 20% over the typical HBSM-based MMC for a converter (LLH2) that can provide fault-blocking capabilities. Assessment of efficiency in both HMMCs is provided over a range of operating conditions both in inverter and rectifier mode from an 800-MVA HVDC system model.

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“…If a problem occurs in the transmission line of the VSC HVDC, a fault current is generated by the fast waveform [7]. This can cause the entire grid of multi-terminal HVDC to be blocked or severely adversely affect the power elements connected to the transmission line [8,9]. Therefore, DC circuit breaker technology that can safely manage fault current has been proposed [10].…”

Section: Introductionmentioning

confidence: 99%

A Zero Crossing Hybrid Bidirectional DC Circuit Breaker for HVDC Transmission Systems

et al. 2021

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With the increasing demand for renewable energy power generation systems, high-power DC transmission technology is drawing considerable attention. As a result, stability issues associated with high power DC transmission have been highlighted. One of these problems is the fault current that appears when a fault occurs in the transmission line. If the fault current flows in the transmission line, it has a serious adverse effect on the rectifier stage, inverter stage and transmission line load. This makes the transmission technology less reliable and can lead to secondary problems such as fire. Therefore, fault current must be managed safely. DC circuit breaker technology has been proposed to solve this problem. However, conventional technologies generally do not take into account the effects of fault current on the transmission line, and their efficiency is relatively low. The purpose of this study is to introduce an improved DC circuit breaker that uses a blocking inductor to minimize the effect of fault current on the transmission line. It also uses a ground inductor to efficiently manage the LC resonant current and dissipate residual current. DC circuit breakers minimize adverse effects on external elements and transmission lines because the use of elements placed on each is distinct. All of these processes are precisely verified by conducting simulation under 200 MVA (±100 kV) conditions based on the VSC-based HVDC transmission link. In addition, the mechanism was explained by analyzing the simulation results to increase the reliability of the circuit in this paper.

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Research on Coordination and Optimal Configuration of Current Limiting Devices in HVDC Grids

Cited by 20 publications

References 40 publications

Multi‐vendor interoperability in HVDC grid protection: State‐of‐the‐art and challenges ahead

Multi‐vendor interoperability in HVDC grid protection: State‐of‐the‐art and challenges ahead

Assessment of Low-Loss Configurations for Efficiency Improvement in Hybrid Modular Multilevel Converters

A Zero Crossing Hybrid Bidirectional DC Circuit Breaker for HVDC Transmission Systems

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