A Novel DC Fault Ride-Through Method for Wind Farms Connected to the Grid Through Bipolar MMC-HVDC Transmission

Jiang, Shouqi; Xin, Yechun; Li, Guoqing; Wang, Lixin

doi:10.1109/tpwrd.2020.2991722

Cited by 23 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, active power is given continuously to the microgrid sensitive load while providing ancillary voltage support to the main grid. Equations (19) and (20) express the separate controls of the voltage at the point of common coupling of the microgrid to the main grid.…”

Section: Dynamic Voltage Supportmentioning

confidence: 99%

“…During fault ridethrough operation, reactive current injection takes precedence. Furthermore, reactive power injection through interfacing inverters should be considered in controller design, and thus, Energies 2022, 15, 701 3 of 33 reactive power injection is permitted without exceeding the operational power limits [19,20]. In such a way, a microgrid's DER/DG systems, including PV systems, deliver dynamic supports to the grid.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

Buraimoh

Davidson

2022

Energies

View full text Add to dashboard Cite

This research presents a secondary control for a grid-supporting microgrid with photovoltaics sources to guarantee grid code compliance and ancillary services. The secondary control accomplishes the fault ride-through, which implements a delayed signal cancellation (DSC) algorithm for negative sequence detection. Without mode switching, the proposed control strategy meets grid code requirements and ensures voltage regulation at the secondary level, which is active and more salient throughout the transient period of host grid disturbances. This control also ensures a constant supply of the microgrid’s sensitive local load while adhering to grid code requirements. Similarly, active power injection into the main grid is limited by progressively altering the MPPT operating point dependent on the depth of voltage sag to optimize reactive power injection to sustain grid voltage sag. The recommended secondary control is triggered by utilizing the DSC process’s detection algorithm to identify the occurrence of a fault in a tiny fraction of a half-cycle in a grid fault. Consequently, while satisfying microgrid load needs, the devised technique guaranteed that increases in DC-link voltage and AC grid current were controlled. MATLAB Simscape ElectricalTM and OPAL-RT Lab are used to do time-domain simulations of the model using the recommended secondary control systems.

show abstract

Section: Dynamic Voltage Supportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

Buraimoh

Davidson

2022

Energies

View full text Add to dashboard Cite

show abstract

“…This paper takes the sub-module of the half-bridge structure as an example to analyze its working principle. As shown in Table 1, there are three working states of the sub-module: the input state, the cut-off state and the blocking state (Jiang et al, 2020).…”

Section: Sm Sub-module Mechanism Analysismentioning

confidence: 99%

A centralized local energy storage modular multilevel converter

Xiao²,

Jiang³

et al. 2022

Front. Energy Res.

View full text Add to dashboard Cite

The energy storage modular multilevel converter (MMC-ES) has been widely studied for its excellent performance in solving the problems of power difference, voltage fluctuation and effective improvement of power quality in the grid caused by the integration of new energy caused by new energy grid connection. Aiming at the problems that energy storage units of the traditional distributed MMC-ES are scattered, inconvenient to assemble and maintain, complex system control, and the traditional centralized MMC-ES has poor capacity selection flexibility, in this paper, a centralized local energy storage modular multilevel converter (MMC-CLES) between the distributed MMC-ES and the centralized MMC-ES is proposed. On the premise of not affecting the advantages of MMC-ES, by reducing the number of energy storage units, the switching loss is reduced, and the problems of complex SOC (state of charge) balance control strategy, large power conversion system loss, the AC side current imbalance caused by the grid connection of new energy sources and high system cost caused by too many energy storage units are solved. Matlab/simulink simulation shows that compared with traditional distributed MMC-ES, MMC-CLES reduces a total of 52 power devices, and under the condition of three-phase voltage unbalance, MMC-CLES effectively suppresses power fluctuations, the SOC balance control and the fast balance of the three-phase current are realized. The unbalance degree of the three-phase current is 8.16%, and the total harmonic distortion rate of the current is 3.11%.

show abstract

“…Vigorously developing renewable energy is an important means to realize the transformation of energy to clean and low carbon (Jiang et al, 2020). The flexible DC transmission technology based on modular multilevel converters (MMCs) has become an important way of renewable energy export with its advantages of a small harmonic component of output voltage and a current, low loss, and easy expansion (Akagi, 2011;Teeuwsen, 2011).…”

Section: Introductionmentioning

confidence: 99%

Construction of a Digital and Physical Hybrid Simulation Platform for MMC-HVDC Grid With Fault Current Suppression Equipment

Wang

Zhu

et al. 2021

Front. Energy Res.

Self Cite

View full text Add to dashboard Cite

In order to fully study the working characteristics of large-scale power electronic devices in the field of renewable energy delivery, it is imperative to build digital and physical hybrid simulation platforms. A power interface algorithm based on damping impedance is proposed to improve the stability of DC power grid hybrid platforms. Firstly, according to the characteristics of the open-loop transfer function of the damping impedance method, the matching principle between damping impedance at the power interface and equivalent impedance of the physical simulation system is obtained. Secondly, the calculation method of the equivalent impedance of multi-type equipment on the physical side is proposed, and the impedance real-time matching under different working conditions is realized. In order to reduce the simulation error caused by interface delay, a DC voltage interface delay compensation method based on slope prediction is proposed, and a prediction compensation model is established. A digital and physical hybrid platform for a four-terminal flexible DC power grid with DC circuit breakers is built to verify the proposed interface algorithm. The simulation results show that the proposed interface algorithm can effectively compensate for the interface delay and ensure the stable operation of the platform under different conditions.

show abstract

A Novel DC Fault Ride-Through Method for Wind Farms Connected to the Grid Through Bipolar MMC-HVDC Transmission

Cited by 23 publications

References 23 publications

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

A centralized local energy storage modular multilevel converter

Construction of a Digital and Physical Hybrid Simulation Platform for MMC-HVDC Grid With Fault Current Suppression Equipment

Contact Info

Product

Resources

About