| 引用本文: | 魏传芝,施啸寒,张恒旭,慈松,刘洋.考虑电流指令跟踪能力的PQ控制逆变型分布式电源故障模型[J].电力自动化设备,2020,40(1): |
| WEI Chuanzhi,SHI Xiaohan,ZHANG Hengxu,CI Song,LIU Yang.Fault model of IIDG with PQ control considering tracking capability of current command[J].Electric Power Automation Equipment,2020,40(1): |
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| 摘要: |
| 从逆变型分布式电源(IIDG)的数学模型、控制原理和参数设计角度出发，分析不同参数、故障前工况和故障严重程度条件下变流器电流对其指令的跟踪情景，进而提出一种考虑变流器电流指令跟踪能力的IIDG对称故障模型。该模型根据变流器电流能否准确跟踪指令将IIDG等值为压控电流源和压控电压源这2个阶段，可更加准确地反映对称故障期间IIDG的控制特性。与现有方法及电磁暂态仿真软件计算结果的对比分析表明，所提方法在简化计算的同时具备更高的计算精度。 |
| 关键词: 配电网 逆变型分布式电源 对称故障模型 PQ控制 故障穿越 故障分析 模型 |
| DOI：10.16081/j.epae.201912033 |
| 分类号:TM71 |
| 基金项目:国家自然科学基金资助项目(51707108)；山东省自然科学基金资助项目(ZR2017QEE015)；山东省高等学校科学技术计划项目(J18KB146) |
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| Fault model of IIDG with PQ control considering tracking capability of current command |
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WEI Chuanzhi1, SHI Xiaohan1, ZHANG Hengxu1, CI Song2, LIU Yang3
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1.Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, China;2.Electrical and Computer Engineering Department, University of Nebraska-Lincoln, Lincoln 68588, USA;3.State Grid Shandong Electric Power Research Institute, Jinan 250002, China
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| Abstract: |
| The ability of converter to track current command under different situations including different parameters of IIDG(Inverter Interfaced Distributed Generator),pre-fault conditions and fault severity are analyzed considering the mathematical model, control principle and parameter design of the IIDG. On this basis, a symmetrical fault model of IIDG considering the current tracking capability is proposed, which depicts IIDG as a voltage-controlled current source or a voltage-controlled voltage source according to whether the current of converter can accurately track the command. In this case, the full characteristics of IIDG during faults are covered. In comparison with the existing methods and the calculative results of electromagnetic transient simulation software, the proposed method exhibits higher calculation accuracy and simultaneously simplifies the calculation. |
| Key words: distribution network inverter interfaced distributed generator symmetrical fault model PQ control fault ride through fault analysis models |
