用于VSC-HVDC互联系统的附加频率控制策略

ZHU Ruike

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用于VSC-HVDC互联系统的附加频率控制策略

更新时间：2025-08-13

- 用于VSC-HVDC互联系统的附加频率控制策略
- Automation of Electric Power Systems Vol. 38, Issue 16, Pages: 81-87(2014)
- 作者机构：
  
  四川大学电气信息学院,四川省,成都市,610065
- 作者简介：
- 基金信息：
- DOI：
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- Published：2014
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ZHU Ruike. [J]. Automation of electric power systems, 2014, 38(16): 81-87.
DOI：

ZHU Ruike. [J]. Automation of electric power systems, 2014, 38(16): 81-87. DOI：

摘要

为使柔性直流输电(VSC-HVDC)系统两侧交流系统在发生事故时具有相互支援的能力

文中提出一种附加频率控制策略。该策略在定有功功率控制器中引入了频率-有功功率和直流电压-有功功率斜率特性

在定直流电压控制器中引入频率-直流电压斜率特性

不需要站间通信就可以实现两端交流系统通过VSC-HVDC参与彼此的频率调整

减轻事故端系统的调频负担

提高故障期间直流系统的安全稳定性。最后

通过仿真软件PSCAD／EMTDC进行仿真验证

结果表明所提策略充分利用了VSC-HVDC互联系统的频率调整能力

提高了VSC-HVDC互联系统的频率稳定性。

Abstract

In order to enable the AC systems at the two sides of voltage source converter based high voltage direct current (VSC-HVDC) system to provide frequency support to each other under a fault

an additional frequency control strategy is proposed. The droop characteristics of frequency-active power and DC voltage-active power are introduced in the active power controller

meanwhile the droop characteristics of frequency-DC voltage are introduced in the DC voltage controller. Both the AC systems can participate in each other’s frequency adjustment through VSC-HVDC without interstation communications. The frequency adjustment burden of the AC system under fault will be relieved

and the frequency stability of the DC system will be improved as well. Finally

simulations with PSCAD/EMTDC verify that the proposed control strategy is able to enhance the frequency stability with full use of the frequency adjustment ability.

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