海外600 MW机组工程低频振荡分析及解决方案  

Analysis and Solution of Low Frequency Oscillation for Overseas 600 MW Unit

作　　者：黄晓鹏 丁永允 段海洲 魏来 赵帅达 HUANG Xiaopeng;DING Yongyun;DUAN Haizhou;WEI Lai;ZHAO Shuaida(Liaoning Dongke Power Co.,Ltd.,Shenyang,Liaoning 110179,China;Electric Power Research Institute of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang,Liaoning 110006,China;Shenyang Institute of Engineering,Shenyang,Liaoning 110136,China)

机构地区：[1]辽宁东科电力有限公司,辽宁沈阳110179 [2]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [3]沈阳工程学院,辽宁沈阳110136

出　　处：《东北电力技术》2020年第8期26-30,共5页Northeast Electric Power Technology

摘　　要：高压互联电网薄弱会造成系统低频振荡和阻尼降低,电力系统稳定器(PSS)可以有效提高系统阻尼。对某海外机组工程的低频振荡事故进行总结,分析此项目在当前电网结构下的特点,进行了PSS整定试验,对PSS投入前后的有功波动情况进行对比分析。由于PSS投入后仍未解决机组满负荷问题,针对此项目提出优化方案,并利用PSASP进行单机无穷大仿真试验,为机组PSS参数整定提供了理论参考。A weak high-voltage interconnected power grid will cause low-frequency oscillation and damping of the system.Power system stabilizers(PSS)can effectively increase system damping.Based on the low frequency oscillation accident of an overseas engineering unit,this paper analyzes the characteristics of this project under the current power grid structure,and makes PSS test plan in this particular.At the same time,the PSS setting test is carried out,and the active power oscillation before and after the PSS is put into operation.Since the problem of full load of the unit is still not solved after PSS is put into operation,the corresponding optimization scheme is proposed for this project,and the single machine infinite bus simulation test is carried out by PSASP.Combined with the current power grid structure of this project,the final optimization scheme is proposed.

关 键 词：电力系统稳定器 低频振荡 动态增益 

分 类 号：TM712[电气工程—电力系统及自动化]