Control system for a UPFC in a transmission line

IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200) Pub Date : 1998-08-31 DOI:10.1109/IECON.1998.724287

P. García-González, A. García-Cerrada

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引用次数: 10

Abstract

This paper presents a detailed investigation of a UPFC control system. The dynamic model of the UPFC has been developed using the space-vector representation of the instantaneous three-phase variables using Park's transformation. The Park's transformation and the reference frame selected reduce the control of the real and reactive power flows to the control of the d- and q-axis currents, respectively. The control loops and the algorithms to ensure instantaneous power control decoupling are explained in detail. The controller also maintains constant the voltage at the DC-link of the back to back inverters. The problems derived from the discrete inverter output control are taken into account when using space-vector PWM. A simulator has been developed to illustrate the main results before building a prototype. A continuous-time model has been used for the power system and the control has been implemented in discrete time. The inverters have been simulated using ideal switches with 0.5 kHz switching frequency.

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传输线UPFC控制系统

本文对UPFC控制系统进行了详细研究。UPFC的动态模型是使用帕克变换的瞬时三相变量的空间矢量表示来开发的。Park的变换和所选择的参考系将对实功率流和无功功率流的控制分别减少到对d轴和q轴电流的控制。详细说明了控制回路和保证功率控制瞬时解耦的算法。控制器还能保持背靠背逆变器直流链路上的电压恒定。采用空间矢量PWM时，考虑了离散逆变器输出控制的问题。在构建原型之前，已经开发了一个模拟器来说明主要结果。该系统采用连续时间模型，并在离散时间内实现控制。采用0.5 kHz开关频率的理想开关对逆变器进行了仿真。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200)

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