Differential Protection Strategy of Link Fault for Distinguishing Protection Quality of Power Business

Bing QI; Xin YE; Bin LI; Lin LIU; Ziyun CHENG; Peifeng XI

doi:10.7500/AEPS20190610006

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Differential Protection Strategy of Link Fault for Distinguishing Protection Quality of Power Business

Application Research | 更新时间：2025-06-16

- Differential Protection Strategy of Link Fault for Distinguishing Protection Quality of Power Business
- Automation of Electric Power Systems Vol. 44, Issue 11, Pages: 181-188(2020)
- 作者机构：
  
  1.华北电力大学电气与电子工程学院，北京市 102206
  2.国网甘肃省电力公司经济技术研究院，甘肃省兰州市 730050
  3.上海市智能电网需求响应重点实验室（上海电器科学研究所（集团）有限公司），上海市 200063
- 作者简介：
- 基金信息：
  
  the Fundamental Research Funds for the Central Universities
- DOI：10.7500/AEPS20190610006
  CLC：
- Received：10 June 2019，
  
  Revised：2019-12-14，
  
  Published Online：01 April 2020，
  
  Published：10 June 2020
- 稿件说明：
移动端阅览
祁兵,叶欣,李彬等.区分电力业务保护质量的链路故障差异化保护策略[J].电力系统自动化,2020,44(11):181-188.

QI Bing,YE Xin,LI Bin,et al.Differential Protection Strategy of Link Fault for Distinguishing Protection Quality of Power Business[J].Automation of Electric Power Systems,2020,44(11):181-188.
祁兵,叶欣,李彬等.区分电力业务保护质量的链路故障差异化保护策略[J].电力系统自动化,2020,44(11):181-188. DOI： 10.7500/AEPS20190610006.

QI Bing,YE Xin,LI Bin,et al.Differential Protection Strategy of Link Fault for Distinguishing Protection Quality of Power Business[J].Automation of Electric Power Systems,2020,44(11):181-188. DOI： 10.7500/AEPS20190610006.

摘要

随着智能电网和能源互联网的快速发展，电力通信网（EPCN）承载的业务越来越多样。为提高EPCN资源利用率，降低网络风险，保证电力业务的可靠传输，提出了一种区分电力业务保护质量的链路故障差异化保护(DLFDP)策略。首先，基于电力通信业务流特征，分析链路失效风险，对EPCN中业务风险进行建模。其次，根据业务重要度和链路风险度提出了基于服务质量的3类保护模型，考虑负载均衡的影响，将网络中的业务向风险较低的链路上进行疏导，在为高重要度业务分配独立保护路径的基础上，复用P圈来保护高风险链路，同时降低网络的阻塞率和风险。仿真结果表明，DLFDP算法可以更加高效地利用网络资源，降低网络中的业务风险和链路风险，同时降低网络的阻塞率。

Abstract

With the rapid development of the smart grid and the Energy Internet

the services carried by the electric power communication network (EPCN) are becoming more diverse. In order to improve the utilization of EPCN resources

reduce the network risk

and ensure the reliable transmission of power services

this paper proposes a differential protection strategy of link fault (DLFDP) for distinguishing protection quality of power business. Firstly

based on the characteristics of power communication service flow

the failure risk of the link is analyzed

and the business risk in EPCN is modeled. Secondly

based on the importance of the business and the risk of the link

three types of protection models based on service quality are proposed. Considering the impact of load balancing

the services in the network are channeled to the links with lower risk

and the services are allocated for high importance. Based on the independent redundant path

the multiplexed P-cycle protects the high-risk link to simultaneously reduce the network blocking rate and risk. The simulation results show that the DLFDP algorithm can effectively utilize network resources

reduce service risk and link risk in the network

and reduce the network blocking rate.

关键词

Keywords

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