负荷特性对特高压紧急直流功率支援的影响

XIE Huifan; ZHANG Yao; XIA Chengjun; ZHONG Qing; WU Zhigang; LIN Lingxue

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负荷特性对特高压紧急直流功率支援的影响

更新时间：2025-08-13

- 负荷特性对特高压紧急直流功率支援的影响
- Automation of Electric Power Systems Vol. 32, Issue 6, Pages: 41-45(2008)
- 作者机构：
  
  南理工大学电力学院,广东省,广州市,510640
- 作者简介：
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- DOI：
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- Published：2008
- 稿件说明：
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XIE Huifan, ZHANG Yao, XIA Chengjun, et al. [J]. Automation of electric power systems, 2008, 32(6): 41-45.
DOI：

XIE Huifan, ZHANG Yao, XIA Chengjun, et al. [J]. Automation of electric power systems, 2008, 32(6): 41-45. DOI：

摘要

采用互补群能量壁垒/扩展等面积准则分析多机系统中特高压直流紧急直流功率支援（EDCPS）提高暂态稳定性的机理，研究了大扰动下恒阻抗 — 恒电流 — 恒功率（ZIP）静态负荷模型、感应电动机（IM）负荷模型对特高压EDCPS效果的影响，深入分析了送、受端网区ZIP静态负荷模型中不同比例的恒功率有功负荷、恒电流有功负荷、恒阻抗有功负荷及其不同比例感应电动机动态负荷对特高压EDCPS策略的影响。研究表明，大扰动下IM比ZIP负荷吸收更多有功。送、受端IM负荷对大扰动后EDCPS下的功角稳定性影响是相反的，送端改善其支援效果而受端则恶化其效果;至于全网采用综合模型后相对于ZIP模型对功角的影响，要衡量送、受端网区负荷量的大小，若送端负荷小于受端负荷则恶化支援下的功角稳定性，需适当增大直流提升量或适时提前投入功率支援。

Abstract

The mechanism of UHVDC emergency DC power support（EDCPS） to enhance transient stability is analyzed based on the CCEBC/EEAC method. The impacts of ZIP load， IM load， load composition， and load location on the EDCPS performance following large disturbances are studied. It is found that following a large disturbance， IM load absorbs more active power than ZIP load and the influence of the sending-end IM load on the post-fault EDCPS power-angel stability is completely opposite to that of receiving-end load. The sending-end loads are helpful to enhance the system stability. In the case that the sending-end load is smaller than the receiving-end load， synthesis load tends to deteriorate the post-fault EDCPS effect， and the active power support needs to be increased or provided in good advance.

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