Power distribution network primary and secondary fusion intelligent switch high-frequency conduction interference test simulation method

Abstract

The invention discloses a power distribution network primary and secondary fusion intelligent switch high-frequency conduction interference test simulation method. The method comprises the following step of S1, modeling and simulating through simulation software, establishing a 10kV power distribution system simulation model, considering several operating conditions which can generate high-frequency interference signals, simulating an over-voltage and a high-frequency interference generated by faults or operations, and establishing a switching action arcing model. The invention relates to theelectromagnetic compatibility test simulation technology field. By using the power distribution network primary and secondary fusion intelligent switch high-frequency conduction interference test simulation method, a system simulation model and a tested equipment model are combined to simulate the generation, propagation and effect processes of a high frequency interference signal. And simultaneously, a stray parameter loop is added in a loop so that a condition that a complicated electromagnetic environment and the interference of the high-frequency signal often make a switch generate a delayaction or even maloperation and refuse to operate when a control loop is installed near equipment can be avoided, thereby, the stable operation of the power distribution network is ensured.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility test simulation, in particular to a test simulation method for high-frequency conduction interference of a distribution network primary and secondary fusion intelligent switch. Background technique [0002] In recent years, with the development of power grid technology, smart grid has gradually become a hot industry development trend. The characteristics of smart substations are that electronic transformers are used to replace traditional transformers, digital signals are used to replace analog signal acquisition, and secondary logic control can be The circuit is directly installed on-site to control the switch action, and can form a digital communication network through cables, optical fibers, communication networks, etc., to achieve accurate voltage and current data measurement, so as to facilitate the control, monitoring and protection of the smart grid. Therefore, the elec...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a test simulation method for the high-frequency conduction interference of the primary and secondary fusion intelligent switch of the distribution network, which solves the problem of interference of high-frequency signals due to the complex electromagnetic environment when the existing control loop is installed near the equipment. It often causes the switch to delay action or even malfunction or refuse to operate, which cannot guarantee the stable operation of the distribution network.

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