中国电机工程学报2017，Vol.37Issue(9)：2561-2570,10.DOI:10.13334/j.0258-8013.pcsee.162633
无损耗传输线物理模拟的集总电路级联数目确定方法
Chained Number of Lumped-circuits for Physical Analogy of the Lossless Transmission Lines
摘要
Abstract
The physical analogy method of power system is the most important test one to understand characteristic of power system and to check performance of relay and control devices, because it may really recurrence the system's physical process. In order to implement physical analogy of long-distance power transmission lines such as HVDC or half-wave length HVAC ones, in general, the equivalent lumped-circuits consisted of some chainedΠ-type or T-type circuits are used in laboratory. However, the chained number ofΠ-type or T-type circuits mainly was determined based on the researcher's experiences or numerical simulation of the transmission lines. The author had not found general formulae to determine the chained number in previous literatures up to now. In this paper, a lumped-circuits equivalent theorem for physical analogy of lossless transmission lines was proposed and the general formulae including chained number, length of transmission lines, the highest frequency, delay time and its relative error were obtained by means of discretization of the lossless transmission lines and solution of the difference- differential equation. The general formulae may be easily applied to determine the chained number ofΠ-type or T-type circuits according to required precision of physical analogy. Finally, the validity of the lumped-circuits equivalent theorem proposed in this paper was verified by numerical simulation of a 1000kV three-phase half-wave length transmission lines.关键词
物理模拟/无损耗传输线/集总电路/等效定理/延迟时间/级联数目/长距离/输电线路Key words
physical analogy/lossless transmission lines/lumped-circuits/equivalent theorem/delay time/chained number/long-distance/power transmission lines分类
信息技术与安全科学引用本文复制引用
崔翔..无损耗传输线物理模拟的集总电路级联数目确定方法[J].中国电机工程学报,2017,37(9):2561-2570,10.基金项目
国家电网公司科技项目(SGXJDK00DJJS1600151). Project Supported by State Grid Corporation of China (SGXJDK00DJJS1600151) （SGXJDK00DJJS1600151）
