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Control gain adjustment method and device of reactive power compensation device and system

A technology for controlling gain and compensation devices, applied in reactive power adjustment/elimination/compensation, circuit devices, flexible AC transmission systems, etc., can solve problems such as instability, access system oscillation, etc.

Active Publication Date: 2018-06-19
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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Problems solved by technology

However, in actual application scenarios, the operating short-circuit capacity of the access system changes in real time. If the fixed SVC control gain parameter does not match the short-circuit capacity of the grid, it will cause oscillation or even instability of the access system.

Method used

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  • Control gain adjustment method and device of reactive power compensation device and system
  • Control gain adjustment method and device of reactive power compensation device and system
  • Control gain adjustment method and device of reactive power compensation device and system

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Embodiment Construction

[0022] The features and exemplary embodiments of each aspect of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessa...

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Abstract

The invention discloses a control gain adjustment method and device of a reactive power compensation device and a system. The method comprises a step of calculating a deviation value of control pointbus voltage according to a sampling value of the control point bus voltage and a target value of the control point bus voltage, a step of obtaining a control point operation short-circuit capacity ofan SVC, and a step of calculating an adjustment step number of the control gain of the SVC based on the deviation value of control point bus voltage and the control point operation short-circuit capacity. According to the method provided in the embodiment of the present invention, the adjustment step number of the control gain can be adjusted according to an actual value of the control point operation short-circuit capacity such that SVC controller gain parameters are matched with a short-circuit capacity of a power grid.

Description

Technical field [0001] The invention relates to the technical field of reactive power compensation devices, in particular to a control gain adjustment method, device and system of a reactive power compensation device. Background technique [0002] With the expansion of the scale of the power grid and the increasingly complex operating environment, in order to improve the safety, stability and economic operation of the power grid, the Static Var Compensator (SVC, Static Var Compensator) as a parallel compensation device has been widely used in power systems. Load compensation and transmission line compensation such as voltage and reactive power compensation to provide voltage support, improve transient stability, increase power transmission capacity, and improve damping system oscillations. [0003] SVC is an automatic reactive power compensation device. The matching of its control gain parameters and the short-circuit capacity of the power grid determines the voltage stability and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/1821Y02E40/10
Inventor 樊俊哲唐彬伟
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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