Non-Linear Control for Variable Resistive Bridge Type Fault Current Limiter in AC-DC Systems
| Autor: | M. A. Abido, S. M. Shafiul Alam, Alaa Hussein |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
transient stability
Control and Optimization non-linear control variable resistive bridge type fault current limiter (VR-BFCL) voltage source converter high voltage DC (VSC-HVDC) voltage fluctuation Computer science 020209 energy Energy Engineering and Power Technology 02 engineering and technology Nonlinear control Fault (power engineering) 01 natural sciences lcsh:Technology Control theory 0103 physical sciences Fault current limiter 0202 electrical engineering electronic engineering information engineering Voltage source Electrical and Electronic Engineering 010306 general physics Engineering (miscellaneous) Resistive touchscreen Renewable Energy Sustainability and the Environment Oscillation lcsh:T High voltage AC power Control system Real Time Digital Simulator Energy (miscellaneous) |
| Zdroj: | Energies, Vol 12, Iss 4, p 713 (2019) Energies; Volume 12; Issue 4; Pages: 713 |
| ISSN: | 1996-1073 |
| Popis: | This paper proposes a non-linear control-based variable resistive bridge type fault current limiter (VR-BFCL) as a prospective solution to ease the effect of disturbances on voltage source converter-based high voltage DC (VSC-HVDC) systems. A non-linear controller for VR-BFCL has been developed to insert a variable optimum resistance during the inception of system disturbances in order to limit the fault current. The non-linear controller takes the amount of DC link voltage deviation as its input and provides variable duty to generate a variable effective resistance during faults. The VSC-HVDC system’s real and reactive power controllers have been developed based on a current control loop where direct axis and quadrature axis currents are used to control the active and reactive power, respectively. The efficacy of the proposed non-linear control-based VR-BFCL solution has been proved with balanced as well as unbalanced faults. The results confirm that the oscillations in active power and DC link voltage have been significantly reduced by limiting the fault current through the insertion of an optimum effective resistance with the proposed control technique. The real time digital simulator (RTDS) has been used to implement the proposed approach. The performance of the proposed non-linear control based VR-BFCL is compared with that of traditional fixed duty control. |
| Databáze: | OpenAIRE |
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