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首页> 外文期刊>Arabian Journal for Science and Engineering >Model Predictive Control Approach for Bridge-Type Fault Current Limiter in VSC-HVDC System
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Model Predictive Control Approach for Bridge-Type Fault Current Limiter in VSC-HVDC System

机译：VSC-HVDC系统中桥式故障限流器的模型预测控制方法

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摘要

Voltage source converter-high-voltage DC (VSC-HVDC) system has number of advantages over traditional line commutated converter HVDC. However, VSC-HVDC system is exposed to high current due to faults having great negative effect on converters. In order to limit fault current to relatively low level, this paper proposes model predictive control (MPC)-based bridge-type fault current limiter (BFCL) for VSC-HVDC system. Fault current limiters are placed with the AC grid sides of VSC-HVDC system. Finite control set MPC is developed for the control of VSC-HVDC system along with BFCL. BFCL controller has been developed to insert resistance and reactance during disturbances. Balanced and unbalanced disturbances are applied to evaluate the effectiveness of proposed BFCL controller so as to limit the fault current and augment transient stability. Real-time digital simulator has been used to conduct simulation works. The performance of the proposed MPC-BFCL is compared with that of series dynamic braking resistor (SDBR). Comparative simulation results show that the proposed MPC-BFCL is superior over SDBR in improving dynamic stability of VSC-HVDC system.
机译：电压源变流器-高压直流（VSC-HVDC）系统比传统的线路换向变流器HVDC具有许多优势。但是，由于故障对转换器造成很大的负面影响，VSC-HVDC系统要承受高电流。为了将故障电流限制在相对较低的水平，本文提出了基于模型预测控制（MPC）的VSC-HVDC系统桥式故障电流限制器（BFCL）。故障电流限制器放置在VSC-HVDC系统的交流电网侧。有限控制集MPC与BFCL一起用于VSC-HVDC系统的控制。已经开发了BFCL控制器，以在干扰期间插入电阻和电抗。利用平衡和不平衡扰动来评估所提出的BFCL控制器的有效性，以限制故障电流并增加瞬态稳定性。实时数字模拟器已用于进行模拟工作。将拟议的MPC-BFCL的性能与串联动态制动电阻（SDBR）的性能进行了比较。对比仿真结果表明，所提出的MPC-BFCL在改善VSC-HVDC系统的动态稳定性方面优于SDBR。

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