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Voltage sag mitigation method based on process parameter immunization time

A technology of process parameters and voltage sag, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., can solve problems such as limited governance effect, huge initial investment and operation and maintenance costs, unable to restrain the development of the situation, and achieve reasonable arrangements The effect of governing resources and avoiding serious losses

Active Publication Date: 2019-06-28
FUZHOU UNIV
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Problems solved by technology

However, there is still a buffer period between equipment failure and process interruption. Simple installation of customized power equipment can only manage the equipment before the interruption, and cannot restrain the development of the situation after the equipment failure.
Customized power solutions involve huge initial investment and operation and maintenance costs. Most users only deploy management equipment at local single points, and the governance effect is very limited.

Method used

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  • Voltage sag mitigation method based on process parameter immunization time
  • Voltage sag mitigation method based on process parameter immunization time
  • Voltage sag mitigation method based on process parameter immunization time

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a voltage sag mitigation method based on process parameter immunization time. The method comprises the following steps: firstly, identifying a sensitive process category of atreatment object; for the electrical sensitive process, adopting an electrical treatment means to determine the compensation capacity and calculate the investment; for the parametric induction process, comprehensively applying electrical and physical governance means, firstly determining the minimum compensation capacity, calculating the customized power equipment investment, then judging whetherthe restart time of equipment is longer than compensated process immunization time or not; if yes, calculating minimum physical attributes, calculating factory affair transformation investment according to the minimum physical attributes, and calculating the total investment; otherwise, directly calculating a total investment meter; and finally calculating the total investment of the two processes. The method can effectively avoid serious loss caused by process interruption when the electric equipment suffers from serious voltage sag.

Description

technical field [0001] The invention relates to the field of voltage sag control, in particular to a voltage sag mitigation method based on process parameter immune time. Background technique [0002] Voltage sag is mainly caused by system failure, transformer excitation inrush current, etc. It is an inevitable phenomenon in the operation of the power grid, which can cause voltage sensitive equipment to fail, and then cause industrial process interruption accidents, resulting in huge losses. The loss of industrial users mainly comes from unplanned shutdowns caused by accidents. The key to controlling voltage sags in industrial users is to maintain process parameters as much as possible and avoid process interruption. [0003] At present, installing customized power equipment for voltage sag control on the user side (hereinafter referred to as "customized power equipment") is a common voltage sag mitigation method. This method compensates for the voltage lost during the volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12H02J3/00
Inventor 张逸李为明张嫣邵振国王建勋
Owner FUZHOU UNIV
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