张宝,李必正,王异成,顾正皓,鲍文龙,樊印龙
ZHANG Bao,LI Bizheng,WANG Yicheng,GU Zhenghao,BAO Wenlong,FAN Yinlong

• 1:国网浙江省电力有限公司电力科学研究院
• 2:浙江省电力建设有限公司

摘要(Abstract)：

汽轮机中压调节阀参与的电力系统低频振荡事件时有发生，威胁着机组与电网的安全运行。给出了3起中压调节阀参与的电力系统低频振荡的典型案例，结合中压调节阀在不同类型汽轮机中的作用，阐述其诱发或参与低频振荡的途径，指出深度调峰机组易发生低频振荡的一个重要原因就是汽轮机综合阀位指令减小，导致线性度不佳的中压调节阀频繁参与机组功率调节。针对当前国内火电机组运行的环境，给出了防止中压调节阀参与电力系统低频振荡的6项具体措施，以供参考。
Low frequency oscillations in power system with medium-pressure regulating valve of steam turbine occur from time to time, threatening the safe operation of generating units and power system. Three typical low frequency oscillations of power system induced by medium-pressure regulating valve are given. Given the roles of mediumpressure regulating valves in different types of steam turbines, the ways they induce or participate in low frequency oscillations are introduced. It is pointed out that one of the major reasons for low frequency oscillations occurring in deep peaking-shaving units is the reduction of the turbine's integrated valve position command, resulting in the frequent participation of medium-voltage regulating valves of poor linearity in the power regulation of the units. In view of the current operating environment of thermal power units in China, six specific measures to prevent the mediumpressure valves from participating in low frequency oscillations in power system are given for reference.

关键词(KeyWords)： 汽轮机;电力系统;低频振荡;中压调节阀;滑压曲线
steam turbine;power system;low frequency oscillation;medium-pressure regulating valve;sliding pressure curve

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张宝,李必正,王异成,顾正皓,鲍文龙,樊印龙
ZHANG Bao,LI Bizheng,WANG Yicheng,GU Zhenghao,BAO Wenlong,FAN Yinlong

DOI: 10.19585/j.zjdl.202309005

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