并网统一潮流控制器影响系统机电振荡模式的阻尼转矩分析

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并网统一潮流控制器影响系统机电振荡模式的阻尼转矩分析

更新时间：2025-08-13

- 并网统一潮流控制器影响系统机电振荡模式的阻尼转矩分析
- Automation of Electric Power Systems Vol. 42, Issue 17, Pages: 18-24(2018)
- 作者机构：
  
  新能源电力系统国家重点实验室(华北电力大学),北京市,102206
- 作者简介：
- 基金信息：
- DOI：
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- Published：2018
- 稿件说明：
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REN Bixing. [J]. Automation of electric power systems, 2018, 42(17): 18-24.
DOI：

REN Bixing. [J]. Automation of electric power systems, 2018, 42(17): 18-24. DOI：

摘要

区别于传统统一潮流控制器(UPFC)的附加阻尼控制，从UPFC的电压源换流器的控制特性角度，研究并网UPFC对系统机电振荡模式的动态影响。并网UPFC能够改变系统潮流分布，并与电力系统发生动态交互。UPFC影响系统机电模式主要有两个方面:一是UPFC调节系统潮流分布，影响系统机电模式；二是UPFC与系统同步机之间的动态交互作用影响系统机电模式。新建立的一种含UPFC的多机电力系统“闭环控制系统”型线性化状态空间模型，该模型将UPFC在电力系统中视为多输入—多输出的“功率—电压”型反馈控制器。在所提出该模型的基础上，应用阻尼转矩分析理论量化分析了UPFC与系统的动态交互作用对电力系统机电振荡模式的影响。采用经典的新英格兰10机算例系统，详细分析了UPFC稳态潮流调节、UPFC控制系统动态特性对系统机电模式的影响。非线性仿真验证了所得结论的正确性。

Abstract

From the perspective of the dynamic characteristics of voltage source converter(VSC)control of unified power flow controller(UPFC)

the dynamic effects of grid-connected UPFC on the system electromechanical oscillation modes are studied. Grid-connected UPFC changes the power system load flow and introduces dynamic interactions with the generators. Thus

there are two main aspects of the UPFC affecting power system electromechanical oscillation modes(EOMs). Firstly

UPFC regulates power distribution and affects the EOMs. Secondly

dynamic interactions introduced from UPFC to generators can affect the EOMs. A “closed-loop control system” type of state space model for the power system is established

where the UPFC is treated as a “power-voltage” type of multi-input and multi-output feedback controller. Based on the proposed state space model

damping torque analysis(DTA)theory is applied to the dynamic interactions introduced from UPFC to EOMs of power system. New England 10-machine example system is used to analyze the effect of flow regulation and control system dynamic characteristics of the UPFC on EOMs. Nonlinear simulation verifies the correctness of the obtained conclusions.

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