電力系統穩定度與控制─子計畫五：以同步相量量測單元為基礎之輸電線適應型保護電驛之研製
Date Issued
2002-07-31
Date
2002-07-31
Author(s)
DOI
902213E002146
Abstract
This project proposes a PMU-based protection
scheme for both transposed and untransposed parallel
transmission lines. The development of the scheme is based on
the distributed line model and the synchronized voltage and
current phasor measurements at both ends of lines. By means of
eigenvalue/eigenvector theory to decouple the mutual coupling
effects between parallel lines, the fault detection and location
indices are derived. The two proposed indices are used in
coordination such that the internal and external fault events can
be distinguished correctly. By on-line estimating the line
parameters, the proposed scheme will respond more accurately to
power system faults. Based on the concepts of statistics and
optimization, an elaborate and subtle threshold setting set of the
proposed fault detection/location indices is selected under equally
taking the reliability, security and speed of the relaying scheme
into consideration. The effects of the performance of CT, CVT,
and communication channel on the designed relay are also
included. Extensive simulation results using EMTP have verified
that the proposed protection system responds well and fast with
regard to dependability and security. The results show that the
performance of the proposed scheme is almost independent of
various system and fault conditions.
Subjects
數位保護
同步相量量測器
全球衛星定位系
統
統
平行雙迴路輸電線
Publisher
臺北市：國立臺灣大學生物產業機電工程學系暨研究所
Type
report
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