Multi-source power distribution network fault positioning method based on improved Jaya algorithm

Abstract

The invention discloses a multi-source power distribution network fault positioning method based on an improved Jaya algorithm in the field of power distribution network fault positioning, and the method comprises the steps: S1, building a fault positioning model according to the characteristics that an active power distribution network contains a plurality of distributed power supplies, and setting a fault current information coding scheme; and establishing a switching function and forming a model evaluation function. S2, carrying out optimization processing on the Jaya algorithm, wherein the optimization processing comprises the steps of optimizing random number generation of variable position iteration based on a chaos theory; performing variable correction on individual codes; and S3, based on the model in the S1, solving calculation is carried out through the improved algorithm in the S2. According to the method provided by the invention, the fault positioning problem of single and multiple faults in different distributed energy distribution conditions can be realized, the fault positioning containing simple distortion information can be processed, the fault section positioning speed when the power distribution network has a fault can be improved, and the reliability of a power system can be improved.

Description

technical field [0001] The invention belongs to the field of distribution network fault location, in particular to a multi-source distribution network fault location method based on the improved Jaya algorithm. Background technique [0002] With the widespread access of multiple types of distributed energy to the distribution network, the distribution network has changed from a traditional single-source radial network to a multi-source distribution network with multiple types of distributed energy. The differences in the operating characteristics of heterogeneous distributed power sources have largely changed the original topology and power flow direction of the distribution network. At the same time, as social life improves the reliability of grid power supply, when a fault occurs in the distribution network, it is necessary to determine and isolate the fault section more quickly and accurately. [0003] Therefore, the outage time is shorter, the fault handling is more eff...

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However, most of the current research is limited to single-source networks, and there is a lack of

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