Fault diagnosis method and device for wind power grid-connected inverter
A fault diagnosis and inverter technology, applied in wind power generation, instruments, electrical digital data processing, etc., to achieve the effect of improving accuracy
Pending Publication Date: 2022-05-20
HUANENG ZHONGDIAN WEIHAI WIND POWER CO LTD +1
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Problems solved by technology
[0003] However, the large-scale development of wind power systems has brought about two important issues: 1) the reliability of wind power systems; 2) the maintenance cost of wind power systems
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[0074] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0075] Such as figure 1 As shown, one aspect of the present invention provides a wind power grid-connected inverter fault diagnosis method S100, including the following specific steps S110-S140:
[0076] S110. Analyze the fault of the inverter based on the wind power generation system to obtain fault data.
[0077] It should be noted that at present, doubly-fed induction generators with variable-speed constan...
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The invention provides a wind power grid-connected inverter fault diagnosis method and device, and belongs to the technical field of photovoltaic power generation. The method comprises the following steps: analyzing a fault of an inverter of a wind power generation system based on the wind power generation system to obtain fault data; performing empirical mode decomposition on the fault data, and calculating the fault data by using the empirical mode decomposition to obtain an IMF; solving the two optimal regularization parameters and a hyperfunction of the kernel function by adopting an improved fireworks algorithm; and according to the two optimal regularization parameters and the hyperfunction of the kernel function, using MLS-SVM to train data and performing fault diagnosis. Compared with an MLS-SVM fault diagnosis method, the improved fireworks algorithm is used for optimizing the MLS-SVM fault diagnosis method, and the accuracy of open-circuit fault diagnosis of the wind power grid-connected inverter can be effectively improved.
Description
technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a fault diagnosis method and device for a wind power grid-connected inverter. Background technique [0002] Wind power systems (WPGS) can serve as a sustainable solution to mitigate the impact of greenhouse gas emissions and meet the energy demands of a growing economy. In addition, the construction cycle of wind farms is short, and the scale of investment and construction has great flexibility. As a result, wind energy has become one of the fastest growing renewable energy sources over the past decade. [0003] However, the large-scale development of wind power systems has brought about two important issues: 1) the reliability of wind power systems; 2) the maintenance cost of wind power systems. In the development of the wind power generation system, not only the function of the wind power generation system, but also the reliability of the win...
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IPC IPC(8): G06F30/23G06F30/25G06F30/27G06K9/62G06N3/00G06N7/08G06F111/08G06F113/06
CPCG06F30/23G06F30/25G06F30/27G06N3/006G06N7/08G06F2111/08G06F2113/06G06F18/2411G06F18/214Y02E10/76
Inventor 李晖王文锋郑智强赵登峰刘乃硕张伦毓李壮郭宏震徐龙
Owner HUANENG ZHONGDIAN WEIHAI WIND POWER CO LTD