Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction

郭少飞; 杨鹏; 徐潜; 李铁成; 李澳; 王彤

doi:10.19725/j.cnki.1007-2322.2023.0419

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Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction

更新时间：2026-02-02

- Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction
- Vol. 43, Issue 1, Pages: 81-91(2026)
- 作者机构：
  
  1. 国网河北省电力有限公司电力科学研究院,河北省,石家庄市,050000
  2. 新能源电力系统国家重点实验室(华北电力大学), 昌平区,北京市,102206
- 作者简介：
- 基金信息：
- DOI：10.19725/j.cnki.1007-2322.2023.0419
  CLC： 1
- Published：2026
- 稿件说明：
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郭少飞, 杨鹏, 徐潜, et al. Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction[J]. 2026, 43(1): 81-91.
DOI：

郭少飞, 杨鹏, 徐潜, et al. Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction[J]. 2026, 43(1): 81-91. DOI： 10.19725/j.cnki.1007-2322.2023.0419.

摘要

新能源多以分布式电源的形式接入配电网，对配电网的故障特征造成了影响，利用本地信息的传统三段式电流保护可靠性难以保证。同时，基于通信系统的纵联保护动作性能受不可测分支影响严重。因此，提出基于虚拟无功功率方向的有源配电网保护方案。首先，定义虚拟无功功率的概念，研究故障发生时IIDG的虚拟无功功率输出特征；其次，分析含不可测分支的有源配电网各支路的故障特性；然后，利用5G通信技术和多代理技术构建配电网保护架构，在此架构上提出基于虚拟无功功率方向的保护综合判据；最后，在PSCAD/EMTDC平台进行仿真验证，证实了所提保护方案的有效性。

Abstract

As renewable energy is connected to the distribution network in the form of distributed generator (DG) in different locations and in different grid-connected ways

the fault characteristics of active distribution networks have undergone fundamental changes. The operational performance of the current longitudinal differential protection is affected by unmeasured branches

and the limited fiber deployment rate in the distribution network hinders the effective application of the longitudinal protection. The virtual reactive power is defined in the positive sequence fault component network

and the output characteristics of the virtual reactive power after the fault of the inverter distributed power supply are investigated. In addition

the branches of the active distribution network with unmeasurable ones are further analyzed after the fault occurs. Based on the fault characteristics of the power distribution network

the 5G communication technology and multi-agent technology are employed to build a distribution network protection architecture. A virtual reactive power directional protection scheme suitable for normal and abnormal communication conditions is proposed on this architecture. Finally

the simulation and verification are carried out through PSCAD to ensure the effectiveness and reliability of protection schemes.

关键词

Keywords

references

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