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Voltage protection method and control device

A voltage protection and control device technology, applied in emergency protection circuit devices, protections that respond to undervoltage or no voltage, electrical components, etc., can solve problems affecting the safe and stable operation of power systems, malfunctions, etc

Pending Publication Date: 2022-02-25
INNER MONGOLIA GUOHUA ZHUNGEER POWER GENERATION
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a voltage protection method and control device to solve the problem in the related art that the safe and stable operation of the power system is affected due to voltage protection malfunction

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Embodiment Construction

[0046] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at leas...

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Abstract

The invention discloses a voltage protection method and a control device, and relates to the field of generators, in order to solve the problem that safe and stable operation of a power system is affected by voltage protection misoperation in the related art, and the protection method comprises the steps: obtaining the terminal voltage of a generator and the working state of the generator, wherein the generator terminal voltage is the voltage output by the generator to a main transformer; when it is determined that the generator terminal voltage is smaller than a preset value and the generator is in a running state, triggering a voltage protection signal; and controlling a voltage protection device to execute a voltage protection action based on the voltage protection signal.

Description

technical field [0001] The present application relates to the field of generators, in particular to a voltage protection method and a control device. Background technique [0002] In a power plant, a voltage protection device is a common protection device. Using a voltage protection device (such as a low voltage protection device) can trigger a voltage protection action when the generator voltage is lower than a certain value, preventing the generator from running at low voltage. It will lead to faults such as overcurrent, overtemperature and even insulation damage of the generator winding, thereby protecting the safety of the power system (the power system may include the power grid, generators and their power equipment, etc.). [0003] In related technologies, the terminal voltage of the generator is generally collected. When the terminal voltage of the generator is lower than the set value, the voltage protection device triggers a voltage protection action, thereby protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/06H02H3/24
CPCH02H7/06H02H3/24
Inventor 屈佳宾乔斌王伟李志强田少波万浩万伟王杨
Owner INNER MONGOLIA GUOHUA ZHUNGEER POWER GENERATION
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