Admittance-based modelling of cables and overhead lines by idempotent decomposition

被引：2

作者：

Camara, Felipe ^{[1
]}

Lima, Antonio C. S. ^{[2
]}

de Barros, Maria Teresa Correia ^{[3
]}

da Silva, Filipe Faria ^{[1
]}

Bak, Claus L. ^{[1
]}

机构：

[1] Aalborg Univ, Aalborg, Denmark

[2] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

[3] Univ Lisbon, Lisbon, Portugal

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2023年 / 224卷

关键词：

Cable; Electromagnetic transients; Idempotent decomposition; Modelling; Overhead line; Vector fitting; ELECTROMAGNETIC TRANSIENTS; TRANSMISSION-LINES; RATIONAL APPROXIMATION; DOMAIN CALCULATION; MULTIPORT SYSTEMS; FREQUENCY; PHASE; IMPLEMENTATION; TRANSFORMATION; SIMULATION;

D O I：

10.1016/j.epsr.2023.109596

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new modelling approach based on idempotent decomposition of the nodal admittance matrix for representation of cables and overhead lines (OHL). By subjecting the idempotent matrices rather than the nodal admittance matrix to rational fitting, the poor observability of the smallest eigenvalues in the lower frequency range is overcome. Unlike the well-known method of characteristics (MoC), this alternative representation yields a so general fully-coupled admittance matrix suitable to tackle scenarios encompassing short and long lengths. Besides retaining the frequency dependence of parameters, the proposed phase-domain model showed to be accurate and suitable to circumvent the requirement of small time-steps.

引用

页数：7

共 46 条

[1] DIRECT PHASE-DOMAIN CALCULATION OF TRANSMISSION-LINE TRANSIENTS USING 2-SIDED RECURSIONS [J].