多机系统超低频振荡稳定分析与调速器参数优化

HUANG Wei

您当前的位置：

首页 >

文章列表页 >

多机系统超低频振荡稳定分析与调速器参数优化

更新时间：2025-08-13

- 多机系统超低频振荡稳定分析与调速器参数优化
- Automation of Electric Power Systems Vol. 42, Issue 21, Pages: 185-191(2018)
- 作者机构：
  
  云南电力调度控制中心,云南省,昆明市,650011
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
移动端阅览
HUANG Wei. [J]. Automation of electric power systems, 2018, 42(21): 185-191.
DOI：

HUANG Wei. [J]. Automation of electric power systems, 2018, 42(21): 185-191. DOI：

摘要

云南电网与南方电网实施异步联网后出现了长时间的超低频振荡。基于奈奎斯特矢量裕度对超低频振荡的机理进行了分析。结果表明，水轮机传递函数存在右半平面零点使水电机组相位在振荡频率附近大幅滞后是引起超低频振荡的主要原因。为了避免切除调速器使跟踪性能下降，提出了一个考虑鲁棒稳定约束下最大化跟踪性能的调速器参数频域优化方法。该方法同时满足了多个方式的稳定需求，且可同时对多个机组调速器进行优化。分析与优化方法的有效性通过云南电网算例得到了验证。

Abstract

A sustained ultra-low frequency oscillation occurs in Yunnan Power Grid after asynchronous interconnecting to China Southern Power Grid. The mechanism of ultra-low frequency oscillation is analyzed theoretically based on the Nyquist vector margin. The result shows that the large phase lag of hydro-power unit at the oscillation frequency

which is brought by the right half plane zero in turbine transfer function

is the key cause of ultra-low frequency oscillation. To avoid the reduction of tracking performance due to the disabling of governors

an optimization method of parameter in frequency domain for governor is proposed to maximize the tracking performance under robust stability constraints

which guarantees the stability margin in various operation points and optimizes several governors simultaneously. Case studies of Yunnan Power Grid validate the effectiveness of the analysis and optimization method.

关键词

Keywords

references

Views

2358

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Phenomenon and Mechanism of Inter-area Tie-line Power Oscillation in Ultra-low Frequency Oscillation

单机等值系统调速器死区对频率振荡的影响

贵阳南部电网“7·7”事故的仿真反演和分析

Related Author

Guang XU

Yongjie FANG

Zhaowei LI

Xuelian WU

Fusuo LIU

Wei LI

HE Yue

CHEN Lei

Related Institution

NARI Group Corporation(State Grid Electric Power Research Institute)

NARI Technology Co., Ltd.

State Key Laboratory of Smart Grid Protection and Control

China Southern Power Grid Dispatching and Control Center

Department of Electrical Engineering, Tsinghua University

⁰