Collaborative decision-making method for grounding arc suppression coil of power distribution network

Abstract

The invention provides a collaborative decision-making method for a grounding arc suppression coil of a power distribution network, the arc suppression coil is a master-slave arc suppression coil, and the method comprises the following steps: step 1, establishing a relationship between recording data and a dynamic characteristic index of the arc suppression coil; 2, when the grounding fault of the power distribution network is detected, the active component and the reactive component of residual current during the grounding fault are solved, and the parameter setting value of active compensation of the arc suppression coil is determined; 3, starting state evaluation of the master arc suppression coil and the slave arc suppression coil, and deciding and distributing current compensation values of the master arc suppression coil and the slave arc suppression coil; 4, active and reactive injection control of the master and slave arc suppression coils is started, and rapid, stable and cooperative control of the master and slave arc suppression coils is realized; and 5, when the fault disappears, timely controlling the grounding residual current dynamic full-compensation arc suppression coil of the power distribution network to reliably exit. The cooperative control problem of the master-slave arc suppression coil of the full-compensation arc suppression coil is solved, and the real-time, dynamic and efficient operation requirements of the grounding residual current of the power distribution network are met.

Description

technical field [0001] The invention relates to the technical field of distribution network arc suppression control, in particular to a collaborative decision-making method for distribution network grounding arc suppression coils. Background technique [0002] With the increasing capacity of urban and rural distribution networks and the extensive use of cable lines, the capacitive current of ground faults to ground increases continuously, and the active component of them also increases significantly. The active current component is mainly caused by the leakage current of the power equipment, the active loss in the zero-sequence circuit, the corona loss and the active loss of the arc suppression coil, etc. The resonant grounding method meets the safety and reliability requirements of the distribution network operation, but the traditional arc suppression coil in the resonant grounding method cannot compensate the active component, the overcompensated reactive component and th...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems raised by the background technology, the present invention provides a method for cooperative decision-making of distribution network grounding arc suppression coils, which solves the problem of cooperative control of master-slave arc suppression coils of full compensation arc suppression coils, and adapts to distribution network grounding residual current Real-time, dynamic and efficient operation requirements

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