Electric energy quality monitoring method and device and electronic device
A power quality monitoring and current technology, applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems of low current harmonic data and low efficiency of power quality monitoring
Active Publication Date: 2021-06-08
BEIJING CHINA POWER INFORMATION TECH
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[0004] In view of this, the present invention provides a power quality monitoring method, device and electronic equipment to solve the problem that the efficiency of power quality monitoring is low if the efficiency of current harmonic data determination is low
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[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0063] The inter-mining subsystem in the fusion terminal of the platform has the power quality monitoring function of the distribution transformer. In practical applications, the inter-mining subsystem uses a processing chip with a certain computing power. During the power quality monitoring process, the power quality monitoring parameters The calculation of the harmonic parameters of the system occupies a large amount of computing resources of the processing c...
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The invention provides an electric energy quality monitoring method and device and an electronic device, and the method comprises the steps: calculating the amplitude of a preset low-order harmonic current of each phase of current in three-phase current, and the total current data of a preset high-order harmonic current; and performing electric energy quality monitoring operation based on the amplitude of the preset low-order harmonic current of each phase of current and the total current data of the preset high-order harmonic current. According to the method, when the current harmonic data are determined, only the amplitude of the preset low-order harmonic current is determined for the low-order harmonics, and the harmonic data of other low-order harmonics with a small proportion are not calculated any more, so that the calculation efficiency is improved. Besides, when the harmonic data of the higher harmonics are calculated, due to the fact that the proportion of the higher harmonics is small, the total current data of the higher harmonics are calculated, each higher harmonic is not independently calculated any more, the calculation efficiency is improved, and then the electric energy quality monitoring efficiency is improved.
Description
technical field [0001] The invention relates to the field of power quality monitoring, more specifically, to a power quality monitoring method, device and electronic equipment. Background technique [0002] In order to ensure the safe operation of the power grid and purify the electrical environment, it is necessary to strengthen the monitoring of the power quality of the power system in order to accurately detect, evaluate and classify the power quality. Therefore, the development and improvement of power quality monitoring technology is related to the safety of power grid. [0003] In practical applications, the fusion terminals in station areas are generally equipped with the power quality monitoring function of distribution transformers. When realizing the power quality monitoring function, it is necessary to collect current harmonic data on the low-voltage side of the distribution transformer, and then conduct For power quality monitoring, if the efficiency of current ...
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Login to View More IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李松胡学勇罗宏明李响柴东桓李晓云李华勤亢子恺
Owner BEIJING CHINA POWER INFORMATION TECH