Electrical singular point monitoring device based on frequency energy proportion

Abstract

The invention provides an electrical singular point monitoring device based on a frequency energy proportion, belongs to the technical field of power quality protection, and aims to solve the problemof insufficient real-time performance of voltage drop and frequency drop monitoring depending on a whole cycle or a half cycle in the prior art. The device comprises a data conversion module, a signalprocessing module, a power supply module, a fault discrimination module, a communication module and a function additional module. According to the design of the invention, the problem of insufficientreal-time performance of power monitoring of a use scene with high requirements for power quality can be solved; a power quality change signal with high real-time performance is provided for a dual-power equipment switching device; and early warning for serious voltage drop and frequency drop can be realized, and the electric power accident caused by the problem of electric power quality can be reduced to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of power quality protection, in particular to an electrical singular point monitoring device based on frequency energy ratio. Background technique [0002] The problem of power quality has been raised for a long time. In the early stage of power system development, the composition of the power system was relatively simple, and the load types were relatively simple. The indicators for measuring power quality were also relatively simple, mainly including frequency deviation and voltage drop. Since the development of the power system, since the structure and composition of the power system have undergone profound changes, the measurement indicators of power quality are no longer limited to the initial two aspects of voltage deviation and frequency deviation. Since the 1980s, with the development of power electronics technology, non-linear power electronic devices and devices have been widely used in modern indu...

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Problems solved by technology

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an electrical singularity monitoring device based on the proportion of frequency energy, which can solve the problem of insufficient real-time power monitoring in usage scenarios that require high power quality; it is a dual power supply device The switching device provides high real-time power quality change signals; it can realize early warning of severe voltage drop and frequency drop, and reduce power accidents caused by power quality problems to the greatest extent possible

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