| 引用本文: | 高亚晨,梁得亮,柳轶彬,张立石,李大伟,吴子豪.混合式配电变压器数字控制系统离散域建模与稳定性分析[J].电力自动化设备,2022,42(6): |
| GAO Yachen,LIANG Deliang,LIU Yibin,ZHANG Lishi,LI Dawei,WU Zihao.Discrete domain modeling and stability analysis on digital control system of hybrid distribution transformer[J].Electric Power Automation Equipment,2022,42(6): |
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| 混合式配电变压器数字控制系统离散域建模与稳定性分析 |
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高亚晨1,2, 梁得亮1,2, 柳轶彬1,2, 张立石1,2, 李大伟1,2, 吴子豪3
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1.西安交通大学 电力设备与电气绝缘国家重点实验室，陕西 西安 710049;2.西安交通大学 陕西省智能电网重点实验室，陕西 西安 710049;3.国网陕西省电力公司电力科学研究院，陕西 西安 710100
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| 摘要: |
| 为准确分析混合式配电变压器(HDT)数字控制系统的特性，构建了HDT连续-离散混合控制模型，并分析了HDT数字控制系统的稳定性。针对所建立的HDT数字控制系统离散域模型，考虑采样和零阶保持器引入的延时环节的作用，结合双线性变换并利用朱利判据推导了离散域下HDT控制系统比例积分参数的约束条件，进而分析并揭示了采样周期对于HDT数字控制系统稳定性的影响规律，并确定合理的数字控制参数。最后通过仿真以及实验验证了理论分析的正确性。 |
| 关键词: 混合式配电变压器 数字控制 采样延时 稳定性分析 |
| DOI：10.16081/j.epae.202203019 |
| 分类号:TM421 |
| 基金项目:国家电网公司科技项目(SGSNKY00KJJS1900039) |
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| Discrete domain modeling and stability analysis on digital control system of hybrid distribution transformer |
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GAO Yachen1,2, LIANG Deliang1,2, LIU Yibin1,2, ZHANG Lishi1,2, LI Dawei1,2, WU Zihao3
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1.State Key Laboratory of Electrical Insulation and Power Equipmemt, Xi’an Jiaotong University, Xi’an 710049, China;2.Smart Grid Key Laboratory of Shaanxi Province, Xi’an Jiaotong University, Xi’an 710049, China;3.State Grid Shaanxi Province Electric Power Research Institute, Xi’an 710100, China
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| Abstract: |
| For precisely analyzing the characteristics of HDT(Hybrid Distribution Transformer) digital control system, a continuous-discrete hybrid control model of HDT is built, then the stability of HDT digital control system is analyzed. Aiming at the established discrete domain model of HDT digital control system, considering the function of time delay introduced by sampling and zero-holder, and combined with Tusin transform and Jury stability criterion, the restrictions of PI parameters of HDT control system in discrete domain are deduced. Based on this, the influence law of sampling cycles on the stability of HDT digital control system is analyzed and revealed, and then reasonable digital control parameters are confirmed. Finally the correctness of theoretical analysis is verified by both simulation model and experiment. |
| Key words: hybrid distribution transformer digital control sampling delay stability analysis |
