| 引用本文: | 李国庆,谷怀广,吴学光,刘 栋.MMC功率接口稳定性分析方法及改进措施[J].电力自动化设备,2016,36(12): |
| LI Guoqing,GU Huaiguang,WU Xueguang,LIU Dong.Analysis of MMC power interface stability and improvement measures[J].Electric Power Automation Equipment,2016,36(12): |
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| 摘要: |
| 为了解决模块化多电平换流器（MMC）数模混合仿真功率接口稳定性问题，根据Routh判据推导出了基于电压型理想变压器算法功率连接技术的数模混合仿真系统接口稳定的必要条件。针对由功率放大器等接口设备带来的系统延时，提出了一种延时补偿技术。对工作于STATCOM模式下的MMC进行等效建模，并在PSCAD仿真软件中实现了基于电压型理想变压器算法的401电平MMC数模混合仿真。仿真结果表明了Routh判据用于数模混合仿真功率接口稳定条件的正确性以及延时补偿技术的有效性。 |
| 关键词: MMC 混合仿真 接口算法 Routh判据 延时补偿 稳定性 |
| DOI：10.16081 ／ j.issn.1006－6047.2016.02.002 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51377016）；国家电网公司“千人计划”专项支持项目（SGRIPGKJ［2013］496） |
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| Analysis of MMC power interface stability and improvement measures |
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LI Guoqing1, GU Huaiguang1, WU Xueguang2, LIU Dong2
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1.Northeast Dianli University，Jilin 132012，China;2.State Grid Smart Grid Research Institute，SGCC，Beijing 102211，China
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| Abstract: |
| In order to improve the power interface stability of digital-analog hybrid simulation for MMC （Modular Multilevel Converter），the Routh stability criterion is adopted to derive the necessary conditions of stable interface for the hybrid simulation system based on the interface algorithm of voltage-type ITM（Ideal Transformer Model）. A digital technology is proposed to compensate the time delay induced by the interface devices，such as the power amplifier. The equivalent model of MMC in the STATCOM mode is established and the PSCAD simulation software is applied to realize the digital-analog hybrid simulation based on the voltage-type ITM for the 401-level MMC. Simulative results show that，the application of Routh stability criterion as the condition of stable power interface in the digital-analog hybrid simulation is correct and the proposed digital technology for compensating the time delay is effective. |
| Key words: MMC hybrid simulation interface algorithm Routh criterion time-delay compensation stability |
