Design and Implementation of a Parallel-Connected Fault Current Attenuator for Power Distribution Systems

Pulido, Esteban S.; Morán, L.; Silva, José J.; González-Torres, Isaac; Rohten, Jaime; Villarroel, Felipe

doi:10.1109/jestpe.2021.3081048

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…Fig. 18 shows the bode plot for the loop gain for the transfer function of the d and q axis positive and negative sequence network (23), (24). The PI controller values selected to ensure the stability of the converter pole are shown in the Tab.…”

Section: B Fault-tolerant Control Methods Verificationmentioning

confidence: 99%

“…The AFEC is the PCS scheme that uses sine triangle PWM for rectifier and inverter operation, thus, a novel fault-tolerant controller is required to operate using sine triangle PWM. Besides, current limiting control techniques should be implemented to control the fault current within the peak limits [24], [25]. In literature, single-switch fault analysis for 3L-NPC pole exists under open and short-circuit conditions [26], [27], but cascaded switch fault condition is not yet discussed.…”

Section: Introductionmentioning

confidence: 99%

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Fault-Tolerant Control and Isolation Method for NPC-Based AFEC Using Series-Connected 10kV SiC MOSFETs

2022

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Power Conditioning Systems (PCS) based on three-level converters with series-connected 10kV SiC MOSFETs have gained popularity for medium voltage applications with the increase in distributed energy sources. With the use of Silicon Carbide (SiC), a wide bandgap semiconductor composed of Silicon (Si) and Carbon (C), MOSFET increases in power electronics application due to higher switching frequency operations. A high switching frequency such as 10 kHz or more leads to a reduction in magnetic components' size and the PCS structure's size. Therefore, the smaller, modular, and lightweight PCS can be attained for micro-grid integration, EV charging, or high inertia-dominated power grid applications. The three-level NPC (3L-NPC) inverter using series-connected 10kV SiC MOSFET is a suitable topology for coupling the PCS with the medium-voltage utility grid. The converter's pole sustainability increases with the two series-connected switches, yet the switches are still sensitive and prone to malfunction under various environmental and mechanical causes. Therefore, a meticulous fault isolation and coordination design may be necessary for the front-end converter for possible switch faults in the converter poles. A well-designed fault-tolerant controller may sustain the converter operation under fault conditions while protecting the healthy parts of the converter. Besides, it minimizes the harmful effects of fault on the grid side and increases the system availability. This paper analyzes short and open circuit switch faults that might occur in the PCS. Accordingly, a fault-tolerant method and a fault isolation method are proposed. The proposed methods are verified with Saber™ and the Real-Time Digital Simulator simulation platforms.

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Section: B Fault-tolerant Control Methods Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Control and Isolation Method for NPC-Based AFEC Using Series-Connected 10kV SiC MOSFETs

2022

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“…To facilitate analysis, the line model in this mode is represented as a lumped parameter with resistance and inductance. Upon the current i(t) decreasing to 0, the termination time tm of the energy absorption and the capacitor's voltage Um can be computed [13][14].…”

Section: Number Of Diodes In Series Inmentioning

confidence: 99%

An Active Injected Location Method for DC Fault of Wind Power Based on Parallel Energy Absorption Module

Wo,

Mei,

Diao

et al. 2024

J. Phys.: Conf. Ser.

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In recent years, the widespread adoption of wind power has been facilitated by the rapid advancements in new energy generation technology. The precise identification and efficient management of DC faults in onshore wind farms has gained increasing significance. To address issues such as limited functionality, low device utilization, and the inefficient use of fault energy prevalent in current fault location methods applied in wind power flexible grid-connected systems, this study explores the storage and reuse technology of fault energy. The article proposes a topology structure designed to absorb and reuse fault energy under multiple DC faults, aiming to overcome the challenges posed by single-function methods. The structure and control strategy of this topology are clearly delineated, and the design methodology for topology electrical parameters is thoroughly investigated. Simulation studies were conducted to validate the electrical characteristics of the employed devices and assess the operational effectiveness of the proposed topology within wind power grid-connected systems. In comparison with conventional fault location methods, the proposed scheme exhibits multiple energy absorption functions for DC faults and fault location capabilities, especially in the presence of permanent DC faults. As a result, this approach maximizes the utilization of DC fault energy, ensuring higher device efficiency and a broader spectrum of functionalities.

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“…For example, system historical data in historical database, real-time telemetry and telecommunication data in real-time database, advanced analysis and calculation results and alarm information, etc. The communication logic completes the uplink and downlink data communication tasks between the Web server and the front-end computer [13]. Uplink data communication means that the front-end processor should inform the system communication module that the system has alarm signals such as switch displacement signal, equipment remote measurement change, equipment exceeding limit or tripping.…”

Section: System Working Principlementioning

confidence: 99%

Research and development of distribution monitoring configuration software based on network

Zhang,

Xu,

Zhao

et al. 2023

5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023)

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In order to solve the problem of network real-time data transmission and the difficult requirements of monitoring system for network data real-time presentation, this paper designs a power monitoring configuration software with Web service function. It is based on B/S architecture, which can expand the equipment primitives for power monitoring applications, and has strong universality and transplant reliability. By using its configuration function, users can quickly generate the power monitoring software system, which can realize the scientific management of power grid monitoring in power enterprises and achieve the purpose of improving work efficiency and automation management level.

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Design and Implementation of a Parallel-Connected Fault Current Attenuator for Power Distribution Systems

Cited by 5 publications

References 25 publications

Fault-Tolerant Control and Isolation Method for NPC-Based AFEC Using Series-Connected 10kV SiC MOSFETs

Fault-Tolerant Control and Isolation Method for NPC-Based AFEC Using Series-Connected 10kV SiC MOSFETs

An Active Injected Location Method for DC Fault of Wind Power Based on Parallel Energy Absorption Module

Research and development of distribution monitoring configuration software based on network

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