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考虑多振荡模式的多频段电力系统稳定器参数整定方法
作者:
作者单位:

1.浙江大学电气学院,浙江省杭州市 310027;2.云南电力调度控制中心,云南省昆明市 650011

作者简介:

江崇熙(1992—),男,博士研究生,主要研究方向:电力系统稳定分析与控制。E-mail:jiangchongxi@zju.edu.cn
石 鹏(1991—),男,博士研究生,主要研究方向:电力系统稳定分析与控制。E-mail:shipeng@zju.edu.cn
黄 伟(1979—),男,博士,高级工程师,主要研究方向:电网运行与控制。E-mail:haxwell@163.com
甘德强(1966—),男,通信作者,博士,教授,主要研究方向:电力系统稳定与电力市场。E-mail:dgan@zju.edu.cn

通讯作者:

基金项目:

国家重点研发计划资助项目(2016YFB0900605)。


Parameter Setting Method for Multi-band Power System Stabilizer Considering Multiple Oscillation Modes
Author:
Affiliation:

1.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2.Yunnan Electric Power Dispatching and Control Center, Kunming 650011, China

Fund Project:

This work is supported by National Key R&D Program of China (No. 2016YFB0900605).

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    摘要:

    安装电力系统稳定器是增强电网小干扰稳定性的有效手段。相较于传统单频段电力系统稳定器,多频段电力系统稳定器具有更多的频段支路与更高的控制自由度,可更好地抑制频率较低的振荡模式,但其整定流程与方法未见广泛研究。文中提出了一个基于多输入多输出系统频域裕度指标的多频段电力系统稳定器参数整定方法,该方法在性能指标中考虑了多个弱阻尼振荡模式,同时调整了多个多频段电力系统稳定器的幅频特性与相频特性,使它们在提供合适相位补偿量的同时最大化系统稳定裕度,且能保证各机组励磁模式稳定。所提方法的有效性通过云南电网算例得到了验证。

    Abstract:

    Installing power system stabilizer is an effective means to enhance power system stability with small disturbances. Compared with the traditional single-band power system stabilizer, the multi-band power system stabilizer has more frequency band branches and higher control degrees of freedom, which can better suppress the oscillation mode with lower frequency, but its setting process and method have not been widely studied. A setting method of parameters for multi-band power system stabilizer based on the frequency domain margin index of multi-input-multi-output system is proposed. The method considers several weakly damped oscillation modes in the performance index, adjusts the amplitude-frequency and phase-frequency characteristics of several multi-band power system stabilizers, guarantees the designed stabilizers maximize the system stability margin while providing suitable compensation phase, and ensures the stability of the excitation mode. Case studies of Yunnan power grid of China validate the effectiveness of the proposed method.

    表 1 云南电网振荡模式Table 1 Oscillation modes of Yunnan power grid of China
    表 2 PSS4B参数Table 2 Parameters of PSS4B
    图1 PSS4B数学模型Fig.1 Mathematic model of PSS4B
    图2 中心频率形式PSS4B低频支路Fig.2 Low frequency branch of PSS4B in central frequency form
    图3 系统安装PSS控制框图Fig.3 Control block diagram of a system with PSSs
    图4 云南电网振荡模式阻尼比(2018夏大极限)Fig.4 Damping ratios of oscillation modes in Yunnan power grid of China (maximum power output level of summer in 2018)
    图5 云南电网黄坪—仁和线仿真结果(2018夏大极限)Fig.5 Simulation results of Yunnan power grid of China at Huangping-Renhe tie-line (maximum power output level of summer in 2018)
    图 PSS2B与PSS4B幅频特性对比(LY1G)Fig. Comparison of PSS2B and PSS4B magnitude-frequency characteristics (LY1G)
    图 云南电网黄坪-仁和线仿真结果(2019冬大)Fig. Simulation results of Yunnan Grid at Huangping-Renhe tie-line (high power output level of winter in 2019)
    图 云南电网黄坪-仁和线仿真结果(2019夏大)Fig. Simulation results of Yunnan Grid at Huangping-Renhe tie-line (high power output level of summer in 2019)
    图 云南电网黄坪-仁和线仿真结果(2019夏大极限)Fig. Simulation results of Yunnan Grid at Huangping-Renhe tie-line (maximum power output level of summer in 2019)
    图 云南电网黄坪-仁和线仿真结果(2019最大外送)Fig. Simulation results of Yunnan Grid at Huangping-Renhe tie-line (maximum power output level of year in 2019)
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引用本文

江崇熙,石鹏,黄伟,等.考虑多振荡模式的多频段电力系统稳定器参数整定方法[J].电力系统自动化,2020,44(4):142-149. DOI:10.7500/AEPS20190117007.
JIANG Chongxi,SHI Peng,HUANG Wei,et al.Parameter Setting Method for Multi-band Power System Stabilizer Considering Multiple Oscillation Modes[J].Automation of Electric Power Systems,2020,44(4):142-149. DOI:10.7500/AEPS20190117007.

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  • 收稿日期:2019-01-17
  • 最后修改日期:2019-05-24
  • 录用日期:2019-05-27
  • 在线发布日期: 2020-02-25
  • 出版日期: