Fault Current Negative Contribution Method for Inverter-Based Distributed Generators Under Grid Unbalanced Fault

Liu, Xubin

doi:10.1109/access.2020.3043357

Cited by 4 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It only requires stator resistance information, which improves its robustness against parameter variations. References [31] and [32] present the positive-and negative-sequence current support of WTG systems during asymmetrical faults. A review of FRT control strategies that summarizes the power injection characteristic, voltage support, and peak converter current limitation is given in [33].…”

Section: A Overall Control Strategies Of Wtgs and Wind Power Plantsmentioning

confidence: 99%

Grid Integration of Offshore Wind Power: Standards, Control, Power Quality and Transmission

Wu,

Seo,

et al. 2024

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

Offshore wind is expected to be a major player in the global efforts toward decarbonization, leading to exceptional changes in modern power systems. Understanding the impacts and capabilities of the relatively new and uniquely positioned assets in grids with high integration levels of inverter-based resources, however, is lacking, raising concerns about grid reliability, stability, power quality, and resilience, with the absence of updated grid codes to guide the massive deployment of offshore wind. To help fill the gap, this paper presents an overview of the state-of-the-art technologies of offshore wind power grid integration. First, the paper investigates the most current grid requirements for wind power plant integration, based on a harmonized European Network of Transmission System Operators (ENTSO-E) framework and notable international standards, and it illuminates future directions. The paper discusses the wind turbine and wind power plant control strategies, and new control approaches, such as grid-forming control, are presented in detail. The paper reviews recent research on the ancillary services that offshore wind power plants can potentially provide, which, when harmonized, will not only comply with regulations but also improve the value of the asset. The paper explores topics of wind power plant harmonics, reviewing the latest standards in detail and outlining mitigation methods. The paper also presents stability analysis methods for wind power plants, with discussions centered on validity and computational efficiency. Finally, the paper discusses wind power plant transmission solutions, with a focus on high-voltage direct-current topologies and controls.

show abstract

Section: A Overall Control Strategies Of Wtgs and Wind Power Plantsmentioning

confidence: 99%

Grid Integration of Offshore Wind Power: Standards, Control, Power Quality and Transmission

Wu,

Seo,

et al. 2024

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Summary [19] Observed that the wind turbine controller may reduce the negative-sequence component of fault currents; injected negative-sequence currents [20] Presented the method that changed the fault current phase angle to minimize the system fault current [21] Quantified the fault current contributions due to IBDGs using steady-state and transient analyses [22] Conducted fault analysis due to IBDGs under balanced conditions [23] Considered IBDG's voltage-dependent control modes for short-circuit analysis of radial and meshed networks [24] Considered fault contributions from unbalanced IBDGs [25] Improved computational speed for fault analysis with IBDGs…”

Section: Previous Studiesmentioning

confidence: 99%

“…A wind turbine control scheme may suppress the negative-sequence component of short-circuit currents and thus requires the injecting of the negative-sequence current [19]. Similarly, Liu [20] changed the phase angle of the fault current to minimize the system's fault current. However, as many inverters in the field have no such functional capabilities, the distribution system operator still needs to adequately perform fault analysis, which calculates short-circuit currents under various fault conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 summarizes the literature survey results of short-circuit analyses. Several researchers [19][20][21][22][23][24][25] have not considered the interconnection transformer topology, which determines how to link three-phase windings among terminals (e.g., in delta or wye). This transformer topology is a critical factor affecting zero-sequence fault current flows into the fault point.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Transformer Topology on Short-Circuit Analysis in Distribution Systems with Inverter-Based Distributed Generations

2022

View full text Add to dashboard Cite

Distributed energy resources (DERs), recently introduced into distribution systems, are mainly inverter-based distributed generations (IBDGs), which have different short-circuit behaviors from conventional synchronous-based distributed generations (SBDGs). Hence, this study presents a comprehensive analysis of the short-circuit behaviors of distribution systems with IBDGs, based on sequence networks and superposition, from the perspectives of interconnected transformers, and observes the flow of zero-sequence fault currents with different transformer topologies. Moreover, two- and three-winding transformers with various bank connection types and groundings are investigated. It was concluded that the transformer topology and its grounding influence the fault current contribution in zero-sequence networks, and the high penetration of IBDGs alters the fault current magnitude and phase angles.

show abstract

“…Conventional power systems are rapidly changing, so that AC electrical networks experience fault current variations and stability degradation due to the high penetration of renewable energy sources (RESs) and high load density on specific regions such as metropolitan areas [1][2][3][4][5][6]. To resolve these problems, we could address them through potential solutions such as AC infrastructure expansion and T&D supportive equipment installation, which should be necessary; however, this would be practically impossible owing to social acceptability (social disapproval) [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Transient Overvoltage Phenomena for Metal-Oxide Varistor Surge Arrester in LCC-HVDC Transmission System with Special Protection Scheme

Kang¹

2022

Energies

View full text Add to dashboard Cite

This paper proposes a systematic and deterministic method for metal-oxide varistor (MOV) surge arrester selection based on the comprehensive analysis in line-commutated converter (LCC)-based high-voltage direct current (HVDC) transmission systems. For the MOV surge arrester, this paper investigates several significant impacts on the transient overvoltage (TOV) phenomena, which is affected by practical factors such as an operating point of the LCC-HVDC system, synchronous machine operating status of the power system, AC passive filter trip, and communication delay in a special protection system (SPS). In order to determine an appropriate rating of surge arrester, especially for TOV, this paper considers a pattern, magnitude, and duration of TOV based on various fault scenarios in an electrical power system with an LCC-HVDC system. A screening study method with 60 Hz and RMS-based balance system is conducted for examining a wide range of fault scenarios, and then for the specific test cases that need a detailed analysis, electro-magnetic transient (EMT)-based analysis models are developed with an approvable boundary setting method through the equivalent network translation tool. A detailed EMT study is subsequent based on the distinguished cases; as a result, the exact number of metal-oxide resistor stacks could be obtained through the detailed TOV study according to this procedure. The efficacy of the selection method from the proposed procedure based on the comprehensive analysis are verified on a specific power system with a 1.5 GW DC ± 500 kV symmetric monopole LCC-HVDC transmission system.

show abstract

Fault Current Negative Contribution Method for Inverter-Based Distributed Generators Under Grid Unbalanced Fault

Cited by 4 publications

References 31 publications

Grid Integration of Offshore Wind Power: Standards, Control, Power Quality and Transmission

Grid Integration of Offshore Wind Power: Standards, Control, Power Quality and Transmission

Impact of Transformer Topology on Short-Circuit Analysis in Distribution Systems with Inverter-Based Distributed Generations

Comprehensive Analysis of Transient Overvoltage Phenomena for Metal-Oxide Varistor Surge Arrester in LCC-HVDC Transmission System with Special Protection Scheme

Contact Info

Product

Resources

About