Method used for detecting low voltage operation capability of reactive power compensator in wind power field

Abstract

The invention provides a method used for detecting low voltage operation capability of a reactive power compensator in a wind power field. The method comprises steps that a voltage drop generation device is connected with a power generation line of the reactive power compensator in the wind power field; a voltage tracking control point is set, and parameter setting of the reactive power compensator is adjusted; an operation power of the reactive power compensator is limited, a set value protection mode of the line and the reactive power compensator is adjusted to make the voltage drop generation device and the reactive power compensator be matched in capacity, and tests are carried out on the condition of safety; the low voltage operation capability of the reactive power compensator is analyzed according to the test result. According to the method, characteristic parameters of the reactive power compensator in the wind power field are adjusted, technical support is provided for electric power scheduling departments, wind power field service providers and relevant detection mechanisms, and whether the reactive power compensator has the low voltage operation capability can be effectively verified.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method for the low-voltage operation capability of a wind farm reactive power compensation device. Background technique [0002] As the proportion of wind power installed capacity in the grid is getting higher and higher, its impact on the grid will not be ignored. In order to effectively reduce the negative impact of wind power access to the grid, it is necessary to configure reactive power compensation devices in wind farms when wind turbines cannot meet the system voltage regulation requirements. Since 2011, there have been many large-scale off-grid accidents of wind power in my country's "Three North" regions. Among them, the unreasonable configuration of wind farm reactive power devices and the lack of low voltage ride-through capability are the main reasons for the further expansion of faults. In order to improve the operational reliability of reactive power compensation d...

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Problems solved by technology

[0005] In order to achieve the above purpose, the present invention provides a detection method for the low-voltage operation capability of the reactive power compensation device of the wind farm, which determines the various parameters of the low-voltage test, and solves the problem of testing by adjusting the power-limited operation of the equipment and the adjustment of the protection setting. The problem of mismatch between equipment and reactive power compensation device capacity

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