中国电力 ›› 2017, Vol. 50 ›› Issue (9): 77-83.DOI: 10.11930/j.issn.1004-9649.201610053

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一种具有相位自适应能力的新型PSS及其仿真

卢岑岑1, 吴跨宇1, 吴龙2, 韩兵2, 沈轶君1, 陆海清1   

  1. 1. 国网浙江省电力公司电力科学研究院,浙江 杭州 310014;
    2. 南京南瑞继保电气有限公司,江苏 南京 211102
  • 收稿日期:2016-10-09 出版日期:2017-09-25 发布日期:2017-09-11
  • 作者简介:卢岑岑(1986—),女,浙江杭州人,硕士,工程师,从事发电机励磁系统和电力系统分析研究。E-mail: cencen_lu@163.com
  • 基金资助:
    国网浙江省电力公司2016年科技资助项目(新型电力系统稳定器及其工程化应用)(5211DS150025)

Study on a New-Type Phase Adaptive Power System Stabilizer and Its Simulation

LU Cencen1, WU Kuayu1, WU Long2, HAN Bing2, SHEN Yijun1, LU Haiqing1   

  1. 1. State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China;
    2. NR Electric Co., Ltd., Nanjing 211102, China
  • Received:2016-10-09 Online:2017-09-25 Published:2017-09-11
  • Supported by:
    This work is supported by Science and Technology Project of State Grid Zhejiang Electric Power Company (Research New Type of Power System Stabilizer and Its Engineering Application) (No.5211DS150025)

摘要: 发电机及其快速励磁控制带来的滞后特性削弱了其与电网之间的阻尼而导致低频振荡风险增加,典型PSS模型多采用多阶超前环节以补偿其滞后特性,从而导致增益受限、中低频段阻尼不足的问题。针对该问题,提出一种通过合成发电机有功功率负变化量与转速变化量作为PSS的输入量,使其相位自动超前的新型电力系统稳定器(PSS)的设计思路,通过相位自适应关系解决多阶超前补偿的问题。给理论分析和仿真验证了新型PSS的相位自适应能力,并验证了其抑制低频振荡能力、大扰动故障恢复能力和抗反调能力的效果。

关键词: 电力系统稳定器, 低频振荡, 相位自适应能力, 设计思路, 新型PSS, 仿真研究

Abstract: The hysteretic characteristic of generator excitation system weakens generator damping, thereby increasing the risk of low frequency oscillation. Most typical power system stabilizer(PSS) models use multistage advance steps to compensate the hysteretic characteristics, which results in limited gains and insufficient damping of middle-low frequencies. A new PSS design idea is proposed in this paper, in which the input is a synthetic phasor of active power negative variation and rotating speed variation, and the phase advances automatically. It can solve the problem of multistage advance compensations. Theoretical analysis and simulation calculation have verified the adaptive phase ability of the new PSS and its ability for suppressing the low frequency oscillation, recovering from large-disturbance faults and the reverse regulating effects.

Key words: power system stabilizer, low frequency oscillation, phase adaptive ability, design idea, new type PSS, simulation research

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