A method for detecting power quality
A detection method and technology for power quality, applied in electrical components, circuit devices, emergency power supply arrangements, etc., can solve the problems of difficulty in eliminating, the output power cannot be properly compensated, and the signal strength is high.
Active Publication Date: 2020-11-27
BEIJING ZHONGDA KEHUI SCI & TECH DEV
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Problems solved by technology
Since there is no isolation transformer inside the uninterruptible power supply, there is a certain high-frequency current in its output neutral line, and these high-frequency currents mainly come from the harmonic signal interference of the mains grid, the pulsating current of the rectifier and the high-frequency inverter Harmonic signal interference and harmonic signal interference of various loads, etc. These harmonic signals are not only strong in signal, but also difficult to completely eliminate
Since the data center needs uninterruptible power supply to provide power for continuous operation, the power quality of the uninterruptible power supply directly affects the normal operation of the data center. However, in practical applications, uninterruptible power supplies will have harmonic pollution, three-phase Different types of power quality problems such as unbalanced and output power cannot be normally compensated. In order to ensure the high-quality power supply of the uninterruptible power supply, the existing technology urgently needs a method that can detect the power supply quality of the uninterruptible power supply, so as to improve the uninterruptible power supply. power supply quality
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[0067] 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 creative efforts fall within the protection scope of the present invention.
[0068] refer to figure 1 , is a schematic structural diagram of a power quality detection method provided by an embodiment of the present invention. The power quality detection method comprises the following steps:
[0069] In step (1), the power supply attribute information corresponding to the uninterruptible power supply is obtained, and the power supply status information between the uninterruptible power supply and different loads is determined according to t...
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The invention provides an electric energy quality detection method, and the method comprises the steps: (1), obtaining the power attribute information corresponding to an uninterruptible power supply,and determining the power supply state information between the uninterruptible power supply and different loads according to the power attribute information; (2) determining the commercial power supply state information and / or storage battery power supply state information corresponding to the uninterruptible power supply according to the power supply state information; (3) determining the inversion switching state information of the uninterruptible power supply according to the commercial power supply state information and / or the storage battery power supply state information; (4) determining power quality state information corresponding to the uninterruptible power supply according to the inversion switching state information.
Description
technical field [0001] The invention relates to the technical field of an uninterruptible power supply system, in particular to a method for detecting power quality. Background technique [0002] A data center is a center for processing and storing relevant data information through computer hardware and software as a system carrier. The data center has powerful data processing and data storage functions, which are widely used in many different big data analysis occasions or personal privacy data processing occasions such as bank customer data information processing, financial industry data information processing, or Internet enterprise user data information processing. In order to ensure the reliability of the power supply of the power system, uninterruptible power supplies are commonly used as the corresponding power systems in existing data centers, which can ensure that the data centers always receive power from external AC power sources or batteries. [0003] At present...
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IPC IPC(8): H02J9/06
CPCH02J9/062
Inventor 赵希峰谭琳
Owner BEIJING ZHONGDA KEHUI SCI & TECH DEV