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A Novel Algorithm for Power Flow Transferring Identification Based on WAMS

机译：基于WAMS的潮流传递辨识新算法。

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摘要

After a faulted transmission line is removed, power flow on it will be transferred to other lines in the network. If those lines are heavily loaded beforehand, the transferred flow may cause the nonfault overload and the incorrect operation of far-ranging backup relays, which are considered as the key factors leading to cascading trips. In this paper, a novel algorithm for power flow transferring identification based on wide area measurement system (WAMS) is proposed, through which the possible incorrect tripping of backup relays will be blocked in time. A new concept of Transferred Flow Characteristic Ratio (TFCR) is presented and is applied to the identification criteria. Mathematical derivation of TFCR is carried out in detail by utilization of power system short circuit fault modeling. The feasibility and effectiveness of the proposed algorithm to prevent themal function of backup relays are demonstrated by a large number of simulations.
机译：拆除故障传输线后，其上的潮流将转移到网络中的其他线路。如果这些线路事先负载过重，则传输的流量可能会导致无故障过载和远距离备用继电器的错误操作，这被认为是导致级联跳闸的关键因素。提出了一种基于广域测量系统（WAMS）的潮流识别的新算法，通过该算法可以及时阻止备用继电器可能的误跳闸。提出了一种新的转移流量特征比（TFCR）概念，并将其应用于识别标准。 TFCR的数学推导是通过利用电力系统短路故障建模来进行的。大量的仿真证明了所提出的算法防止备用继电器异常运行的可行性和有效性。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第21期|608520.1-608520.17|共17页
  • 作者

    Yan Xu; Ping Han; Li Zhang;

  • 作者单位

    North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071000, Peoples R China;

    North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071000, Peoples R China;

    North China Elect Power Univ, Sch Elect & Elect Engn, Baoding 071000, Peoples R China;

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