An improved charging current compensation algorithm for distribution cable protection
An improved charging current compensation algorithm for distribution cable protection
- Author(s): Haigang Wang ; Xinzhou Dong ; Z.Q. Bo ; Bin Su ; B.R.J. Caunce ; A. Klimek
- DOI: 10.1049/cp:20061891
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- Author(s): Haigang Wang ; Xinzhou Dong ; Z.Q. Bo ; Bin Su ; B.R.J. Caunce ; A. Klimek Source: 2006 China International Conference on Electricity Distribution (CICED 2006), 2006 page ()
- Conference: 2006 China International Conference on Electricity Distribution (CICED 2006)
- DOI: 10.1049/cp:20061891
- ISBN: 0 86341 638 1
- Location: Beijing, China
- Conference date: 17-20 Sept. 2006
- Format: PDF
Capacitive charging current is a special problem for distribution cable protection. To ensure the current differential relay can work well for distribution cable protection, the charging current have to be compensated before applying the operation criterion. This paper introduced a newly proposed charging current compensation method for transmission line protection. The new charging current method was improved to make it works well for distribution cable protection, especially the current differential protection. Compared with the other charging current compensation methods, the proposed method can compensate the charging current accurately for any external faults. Combined with current differential relay criterion, the new charging current compensation method can improve the performance of current differential relay greatly. Theory analysis and EMTP simulation have been performed to prove its advantages. (7 pages)
Inspec keywords: power cables; compensation; power distribution protection; transmission lines
Subjects: Power system protection; Power cables; Distribution networks
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