电力系统及其自动化学报2019，Vol.31Issue(1)：40-46,7.DOI:10.19635/j.cnki.csu-epsa.000121
时滞诱导电力系统动态调频稳定性变化的原因探究
Investigation on Causes of Time Delay Induced Stability Change for Dynamic Frequency Regulation of Power System
马世乾 1张志君 1王梓 2蒋菱 2魏炜 3董朝宇4
作者信息
- 1. 国网天津市电力公司电力科学研究院,天津 300384
- 2. 国网天津市电力公司,天津 300010
- 3. 天津大学智能电网教育部重点实验室,天津 300072
- 4. 天津大学智能电网教育部重点实验室,天津 300072
- 折叠
摘要
Abstract
In light of the time-delay problem in the dynamic frequency regulation of power system,the causes of insta?bility induced by time delay are given. First,a time-delay model of power system under dynamic frequency regulation is derived,and its structure and components are analyzed. Then,the time delay link is processed through the Padé ap?proximation,and a time-delay coefficient matrix is established by coupling the time-delay and model coefficients, which is further used to trace the changing locus of eigenvalues of the time delay system. With the utilization of a typical power system under dynamic frequency regulation,it is found that the time delay and control parameters for the corre?sponding loop affect the same dominant eigenvalues,and the time delay therein gradually deteriorates the frequency sta?bility of the power system through ultra-low frequency oscillation.关键词
时滞/动态调频系统/超低频振荡/稳定性Key words
time delay/dynamic frequency regulation system/ultra-low frequency oscillation/stability分类
信息技术与安全科学引用本文复制引用
马世乾,张志君,王梓,蒋菱,魏炜,董朝宇..时滞诱导电力系统动态调频稳定性变化的原因探究[J].电力系统及其自动化学报,2019,31(1):40-46,7.
