中国电机工程学报2024，Vol.44Issue(9)：3722-3731,中插33,11.DOI:10.13334/j.0258-8013.pcsee.223455
考虑参数频变特性的电力电缆改进贝杰龙模型
Improved Bergeron Model of Power Cable Considering Parameter Frequency-dependent Characteristics
摘要
Abstract
The interaction between power electronic equipment,renewable energy units and power grids in the new power system leads to broadband resonance problems.Power cables are key links of renewable energy integration and their non-negligible distributed capacitance increases the risk of broadband resonance.The existing research mainly includes time-domain simulation and impedance analysis.However,the distributed parameter characteristics and frequency-dependent characteristics are ignored during the modeling,which leads to inaccurate stability assessment,lower efficiency of simulation and imaginary oscillation.The traditional Bergeron model fails to take the frequency-dependent characteristics into consideration,which causes problems like high-order harmonic amplification.In order to determine the modeling method suitable for power cables in the harmonic frequency range,the simplified calculation of power cable parameters is summarized according to the cable structure.On this basis,the advantages of Bergeron model are explored deeply,and the cable electrical parameters are modified according to the related harmonic frequency to improve the traditional Bergeron mode.Finally,the results obtained by the simplified calculation method of power cable electrical parameters are compared with those obtained by the calculation in PSCAD/EMTDC,and the proposed improved model is tested in time domain to verify its correctness and effectiveness.关键词
电力电缆建模/贝杰龙模型/频变特性/电缆参数计算Key words
power cable modeling/Bergeron model/frequency-dependent characteristics/parameter calculation of power cable分类
信息技术与安全科学引用本文复制引用
王惠泽,曹书豪,冯谟可,许建中..考虑参数频变特性的电力电缆改进贝杰龙模型[J].中国电机工程学报,2024,44(9):3722-3731,中插33,11.基金项目
国家自然科学基金项目(52277094). Project Supported by National Natural Science Foundation of China(52277094). （52277094）
