摘要
机组的无补偿相频特性直接影响PSS效果,基于Heffron-Philips模型,推导了计算附加无功调差系数改变引起机组无补偿相频特性变化时不同标幺系统之间转换方法;分别在某1 000 MW和某300 MW机组上设置不同调差,对计算附加调差改变引起相频特性变化量的理论值进行了试验验证;提出了附加调差系数改变时修改PSS参数的方法,在某300 MW机组上给出了实例。试验结果表明附加调差系数改变引起的机组相频特性变化理论值与试验值基本吻合,可以应用在工程实践;提出的应对附加调差系数改变修改PSS参数方法能够用于各机组附加调差系数修改后的PSS参数修改。
PSS damping effect is largely affected by the uncompensated phase frequency characteristic of generator unit.The conversion method between different per unit systems,in case of calculating variation of the uncompensated phase frequency of the generator unit due to the change of additional reactive power adjustment coefficient,is derived.The different adjustment differences are set on one 1000 MV and one 300 MW generator units respectively and the test verification of the theoretical value of phase frequency characteristic variation due to the calculation of additional adjustment is performed.The method of modifying PSS parameters in case of variation of additional adjustment coefficient is proposed and the real example is given on one 300 MW generator unit.The tests results show that the theoretical value of the phase frequency variation of the generator unit due to the change of additional adjustment coefficient is basically identical in agreement with that of test value and can be used in the engineering practice.The method proposed to modify the PSS parameters in response to the change of the additional adjustment coefficient can be used for the modification of PPS parameters after the modification of the additional adjustment coefficient of each generator unit.
作者
朱应峰
王亮
张冰
杨冬
解笑苏
高嵩
马欢
ZHU Yingfeng;WANG Liang;ZHANG Bing;YANG Dong;XIE Xiaosu;GAO Song;MA Huan(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;Shandong Electric Power Research Institute,Jinan 250003,China;Shandong Power Dispatching&Control Center,Jinan 250001,China)
出处
《电力电容器与无功补偿》
2021年第6期196-202,共7页
Power Capacitor & Reactive Power Compensation
基金
山东省电力有限公司科技项目(520626190022)。
关键词
电力系统稳定器
相频特性
改变
PSS参数修改
power system stabilizer
phase-frequency characteristic
change
PSS parameters modification
作者简介
朱应峰(1992—),男,工程师,从事发电机励磁控制和电力系统稳定研究工作;王亮(1979—),男,教授级高级工程师,从事电力系统运行管理和电力系统分析工作;张冰(1981—),男,教授级高级工程师,从事电力系统运行管理和电力系统分析工作;杨冬(1984—),男,高级工程师,从事电网运行分析与仿真计算工作;解笑苏(1987—),男,工程师,从事发电机励磁控制和电力系统稳定研究工作;高嵩(1985—),男,高级工程师,从事发电自动化和网源协调研究工作;马欢(1989—),男,工程师,从事电网运行分析与仿真计算工作。
