电力系统保护与控制Issue(3)：21-25,5.
四川电网由高压直流输电引起的次同步振荡特性研究
Study on SSO characteristic of Sichuan power grid caused by HVDC
摘要
Abstract
Nowadays a number of HVDC power transmission projects are building in Sichuan power grid. Yet HVDC system will lead to subsynchronous oscillation (SSO) in the sending end of AC systems, and cause the consequent torsional oscillation of relative generators and shorten the life of shaft. So it is extremely urgent to assess the risk of SSO. And this is of great significance for the security and stability of power grid. In this paper, the Unit Interaction Factor (UIF), and Prony identification method which is used to extract oscillation eigenvalues and time domain simulation of electromagnetic transient are used to study the SSO characteristic of Sichuan power grid caused by HVDC. And these methods can be mutual authentications in the time domain and frequency domain. The study results indicate that in several individual mode of operation, the ±800 kV UHVDC system from Xiangjiaba to Shanghai may stimulate torsional oscillation of Luzhou thermal power generator unit more seriously. And the set of analysis methods can well assess the risk of SSO. It has a high application value that can be widely used in engineering.关键词
次同步振荡/高压直流输电/机组作用系数法/电磁暂态仿真/Prony辨识Key words
subsynchronous oscillation (SSO)/HVDC/UIF/electromagnetic transient simulation/Prony identification分类
信息技术与安全科学引用本文复制引用
穆子龙,王渝红,彭灿,李兴源,顾威..四川电网由高压直流输电引起的次同步振荡特性研究[J].电力系统保护与控制,2013,(3):21-25,5.基金项目
国家自然科学基金重点项目(51037003) （51037003）
国家电网公司科技项目 （）
四川省科技厅基础应用计划(2010JY0018) （2010JY0018）
