Study on Sub-synchronous Oscillation Damping Controller for Near-area Unit of HVDC Converter Station

LIU Yitao; ZHANG Nan; GAO Jing; WANG Zheng; JIANG Tao

doi:10.13296/j.1001-1609.hva.2018.03.026

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Study on Sub-synchronous Oscillation Damping Controller for Near-area Unit of HVDC Converter Station

更新时间：2025-04-26

- Study on Sub-synchronous Oscillation Damping Controller for Near-area Unit of HVDC Converter Station
- High VoltageApparatus Vol. 54, Issue 3, Pages: 181-187(2018)
- 作者机构：
  
  1. 国网辽宁省电力有限公司
  2. 国网辽宁省电力有限公司经济技术研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.03.026
  CLC： TM712
- Published：2018
- 稿件说明：
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[1]刘一涛,张楠,高靖,王征,江涛.应用于高压直流换流站近区机组的次同步振荡阻尼控制器研究[J].高压电器,2018,54(03):181-187.

LIU Yitao, ZHANG Nan, GAO Jing, et al. Study on Sub-synchronous Oscillation Damping Controller for Near-area Unit of HVDC Converter Station[J]. High voltageapparatus, 2018, 54(3): 181-187.
[1]刘一涛,张楠,高靖,王征,江涛.应用于高压直流换流站近区机组的次同步振荡阻尼控制器研究[J].高压电器,2018,54(03):181-187. DOI： 10.13296/j.1001-1609.hva.2018.03.026.

LIU Yitao, ZHANG Nan, GAO Jing, et al. Study on Sub-synchronous Oscillation Damping Controller for Near-area Unit of HVDC Converter Station[J]. High voltageapparatus, 2018, 54(3): 181-187. DOI： 10.13296/j.1001-1609.hva.2018.03.026.

摘要

在交直流混联系统中

高压直流输电系统可能引发送端交流系统发生次同步振荡现象

造成换流站近区机组的轴系扭振

使得发电机组大轴及周围设备损坏

同时对升压变压器一次侧造成冲击。针对该问题

文中首先分析了高压直流换流站近区机组次同步振荡的产生机理

然后提出了一种基于附加次同步振荡阻尼控制器的抑制方法。最后在PSCAD电磁暂态仿真环境下计算表明

附加次同步振荡阻尼控制器能够快速响应次同步振荡扰动

抑制次同步振荡幅值

平抑次同步振荡引起的过电压和过电流

避免其对机组轴系和升压变压器一次侧的冲击。

Abstract

In the AC/DC hybrid system

the HVDC transmission system may lead to the sub-synchronous oscillation of the AC system. this will cause the torsional vibration of the shaft of near-field unit of converter station and causes damage to the generator shaft and surrounding equipment

meanwhile

will impact on the primary side of the step-up transformer. In response to this problem

in this paper

the generation mechanism of sub-synchronous oscillation in near-area units of a HVDC converter station is analyzed

and then a suppression method based on an additional sub-synchronous oscillation damping controller is proposed. Finally

the simulation results under PSCAD/EMTDC show that the additional sub-synchronous oscillation damping controller can respond to sub-synchronous oscillation disturbancequickly. The amplitude of sub-synchronous oscillation are suppressed

the overvoltage and over current caused by sub-synchronous oscillation are stabilized. So

the impaction on the primary side of the unit shafting and step-up transformer are avoided.

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