Abstract
According to the existing research, the fault section location and fault location of passive distribution network and active distribution network are reviewed. Among them, fault location of passive distribution network mainly introduces fault segment location based on transient state and steady state quantity and fault location based on transient quantity. The active distribution network mainly introduces the fault segment location based on the current amount and the switching capacity based on the distribution network topology. On this basis, the difficulties of fault location in the distribution network at present are analyzed, and the future development is prospected.
Highlights
With the increasing demand for electrical energy in people’s daily production and life, the density of distribution networks is increasing
Fault location of passive distribution network mainly introduces fault segment location based on transient state and steady state quantity and fault location based on transient quantity
In [18], the single-phase ground fault charging and discharging transient characteristics of the resonant grounding system are introduced into the distribution network fault location, and the discharge transient frequency range is judged according to the line fault charging transient frequency characteristic, which is integrated in the ranging algorithm
Summary
With the increasing demand for electrical energy in people’s daily production and life, the density of distribution networks is increasing. When the distribution network fails, the accurate fault location of the distribution network is the premise for realizing the rapid and effective removal of the distribution network fault and restoring the power supply. This plays an important role in ensuring the power quality of the user and improving the system reliability [1]. The automatic fault location of distribution network is divided into fault line selection, fault section location and fault location according to the requirements and objectives of fault location. Scholars at home and abroad (such as: Song Guobing, Zhang Wei, etc.) have carried out a large number of theoretical and experimental studies in these three aspects, among which the re-
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