A digital compensation system and method for power supply voltage

Abstract

The invention discloses a power supply voltage digital compensation system and method. The system comprises a power supply module, a current sensor and a management module, wherein the current sensoris used for acquiring a current signal; the management module is used for obtaining a voltage difference signal, so that a voltage regulation signal is formed; the power supply module is used for receiving a voltage regulation signal, and adjusting the local voltage signal output by the power module according to the corresponding processing result. The method comprises the following steps: step 1,acquiring relevant signals; step 2, calculating a voltage difference signal, and performing feedforward compensation correction and PI compensation correction on the voltage difference signal, so asto form a voltage regulation signal; and step 3, adjusting the local voltage output by the power supply module according to the voltage regulation signal. The self-adaptive compensation can be carriedout on the power supply voltage of the load end of the remote power supply and distribution, the electricity demand of the load can be met, and the system has the advantages of high operation flexibility, high response speed, high voltage stabilization precision, and high anti-interference capability.

Description

technical field [0001] The present invention relates to the technical field of remote power supply and distribution, and more specifically, the present invention relates to a digital compensation system and method for power supply voltage. Background technique [0002] Generally, during remote power supply and distribution, the voltage drop of the power supply cable between the power source and the load increases with the increase of the current, which will cause the voltage of the load power supply terminal to drop, which often cannot meet the needs of the load. electricity demand. At present, in order to solve the problem of voltage drop at the load power supply end due to the influence of cable length and wire gauge, at least one power feedback line is generally led back from the load power supply end to the power supply to ensure that the voltage at the load power supply end meets the power demand. [0003] However, the above method of leading back the power supply feed...

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Problems solved by technology

[0005] In order to solve the problems of poor remote power supply reliability and the risk of instantaneous power failure in the prior art, the present invention innovatively provides a digital power supply voltage compensation system and method to ensure that the power supply voltage at the load power supply terminal meets the power demand. Under the premise that the power supply voltage at the load end is not affected by the length and gauge of the power supply cable, the method of leading back the feedback line can be completely abandoned, and the reliability of remote power supply and distribution can be effectively improved to meet the actual needs of the site and protect power consumption. equipment, thereby better solving many problems existing in the prior art and overcoming various defects existing in the prior art

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