Abstract
Removal of transmission lines in power systems may result in load flow transferring and unreasonable operations of backup protections, which may develop into cascading tripping accidents and even blackouts. Traditional backup protection based on local measurement information has disadvantages in preventing from cascading trip because it cannot distinguish the over load reason between due to faults and due to load flow transferring. On the premise that the load flow transferring can be identified based on wide-area coordination system, concise adaptive adjustment methods for the operation characteristics of zone III distance protection and overcurrent protections are proposed to avoid the mal-operation caused by load flow transferring. Meanwhile, their backup protection functionality can be reserve to a great extent. The simulation test results illustrate the validity of the proposed method.
| Original language | English |
|---|---|
| Pages (from-to) | 27-33 |
| Number of pages | 7 |
| Journal | International Journal of Electrical Power and Energy Systems |
| Volume | 79 |
| DOIs | |
| State | Published - Jul 2016 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 Elsevier Ltd. All rights reserved.
Keywords
- Adaptive adjustment
- Backup protection
- Cascading trip
- Load flow transferring
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering