含多种限流设备的柔性直流电网RT-LAB实时仿真建模

doi:10.11930/j.issn.1004-9649.202105056

中国电力 ›› 2021, Vol. 54 ›› Issue (10): 28-37.DOI: 10.11930/j.issn.1004-9649.202105056

• 国家“十三五”智能电网重大专项专栏：（八）直流电网故障电流抑制技术专栏 • 上一篇下一篇

含多种限流设备的柔性直流电网RT-LAB实时仿真建模

夏仕伟¹, 高晨祥¹, 孙昱昊¹, 冯谟可¹, 赵成勇¹, 许建中¹, 程亭婷², 谷怀广²

1. 新能源电力系统国家重点实验室（华北电力大学），北京 102206;
2. 全球能源互联网研究院有限公司，北京 102209

收稿日期:2021-05-14 修回日期:2021-08-20 出版日期:2021-10-05 发布日期:2021-10-16
作者简介:夏仕伟(1999-),男,博士研究生,从事高压直流输电电磁暂态仿真建模研究,E-mail:xiashiwei2021@163.com;许建中(1987-),男,通信作者,博士,副教授,从事高压直流输电和直流电网技术研究,E-mail:xujianzhong@ncepu.edu.cn
基金资助:
国家重点研发计划资助项目(柔性直流电网故障电流抑制的基础理论研究，2018YFB0904600)

Real-Time Modeling and Simulation of Flexible DC Grid with Various Types of Current Limiting Devices Based on RT-LAB

XIA Shiwei¹, GAO Chenxiang¹, SUN Yuhao¹, FENG Moke¹, ZHAO Chengyong¹, XU Jianzhong¹, CHENG Tingting², GU Huaiguang²

1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Beijing 102206, China;
2. Global Energy Interconnection Research Institute Co., Ltd., Beijing 102209, China

Received:2021-05-14 Revised:2021-08-20 Online:2021-10-05 Published:2021-10-16
Supported by:
This work is supported by National Key R&D Program of China (Research on the Basic Theory of Fault Current Suppression in Flexible DC Grid, No.2018YFB0904600)

摘要/Abstract

摘要： 柔性直流电网具有“低惯性、弱阻尼”的特点，其故障电流上升速度快且峰值高。针对包含大量电力电子器件的限流设备不仅增加系统复杂性，同时也降低直流电网仿真效率的问题，提出不同限流设备的等效建模方法。首先，搭建包含多种限流设备的17端柔性直流输电网数字仿真模型；其次，依据单端口子模块等效建模方法，分别针对其中4种典型故障限流设备提出有效的等效建模策略；最后，基于RT-LAB平台对17端直流电网数字模型进行实时化处理，完成实时模型的搭建。仿真结果显示，所提等效方法和所建实时仿真模型，可以实现对稳态、故障等多种工况的精确拟合。

关键词: 柔性直流输电, 直流电网, 限流设备, 等效模型, RT-LAB, 实时仿真

Abstract: Flexible DC grids have the characteristics of "low inertia and weak damping", and their fault current rises rapidly with high peak value. Current limiting devices usually contain a huge number of power electronic devices, which not only increases the complexity of the system, but also reduces the simulation efficiency of the DC grids. An equivalent modeling method is proposed for different current limiting devices, so as to improve the simulation efficiency of the model and meet the requirements of system design and operation analysis. Firstly, a digital simulation model of a 17-terminal flexible DC grid with various current limiting devices is built in this paper. Then, according to the generalized equivalent modeling method for single-port sub-module, an effective equivalent modeling strategy is proposed for four typical fault current limiting devices respectively. Finally, the digital model of 17-terminal DC grid is processed in real-time based on RT-LAB platform to complete the construction of the real-time model. The simulation results show that the proposed equivalent method and the real-time simulation model can accurately fit various working conditions such as steady-state and fault.

Key words: flexible DC transmission, DC grid, current limiting device, equivalent model, RT-LAB, real-time simulation

夏仕伟, 高晨祥, 孙昱昊, 冯谟可, 赵成勇, 许建中, 程亭婷, 谷怀广. 含多种限流设备的柔性直流电网RT-LAB实时仿真建模[J]. 中国电力, 2021, 54(10): 28-37.

XIA Shiwei, GAO Chenxiang, SUN Yuhao, FENG Moke, ZHAO Chengyong, XU Jianzhong, CHENG Tingting, GU Huaiguang. Real-Time Modeling and Simulation of Flexible DC Grid with Various Types of Current Limiting Devices Based on RT-LAB[J]. Electric Power, 2021, 54(10): 28-37.

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含多种限流设备的柔性直流电网RT-LAB实时仿真建模

Real-Time Modeling and Simulation of Flexible DC Grid with Various Types of Current Limiting Devices Based on RT-LAB

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含多种限流设备的柔性直流电网RT-LAB实时仿真建模

Real-Time Modeling and Simulation of Flexible DC Grid with Various Types of Current Limiting Devices Based on RT-LAB

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