Fault handling method, device and system for modular wind power converter
A converter and modular technology, applied in circuit devices, wind power generation, electrical components, etc., can solve the problems of long downtime, affecting the power generation of the system, and general fault upgrades, so as to reduce downtime maintenance time and reduce power generation. effect of loss
Active Publication Date: 2021-03-30
BEIJING ETECHWIN ELECTRIC
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[0004] However, if the general faults are not handled in time, such as the continuous over-temperature and over-current of the IGBT module, etc., it is easy to cause the general fault to be upgraded to a serious fault, and then cause damage to the entire wind power converter; if a serious fault occurs, the wind power converter must be repaired. Shutdown operation and maintenance, maintenance personnel go to the fault site to deal with it, resulting in too long downtime and seriously affecting the power generation of the system
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[0020] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures. Apparently, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.
[0021] Before explaining the inventive concepts of the present disclosure, the terms used in the present disclosure will be explained.
[0022] Modular converter: A converter that uses a modular architecture to realize parallel connection of any converter modules, where the capacity of the converter modules can be the same or ...
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Provided are a fault handling method, device and system of a modular converter. The modular converter comprises at least one converter module connected in parallel between the generator and the unit transformer. The fault handling method comprises the following steps of: presetting the fault level of the modular converter; diagnosing a fault event of the modular converter and determining a fault level corresponding to the fault event; according to the fault level, a control signal is generated for indicating that the converter module or the converter machine is in the fault mode, so that the fault can be accurately handled and the fault downtime can be reduced.
Description
technical field [0001] The invention relates to the technical field of wind power generation, and more specifically, to a fault handling method, device and system for a modular converter of a permanent magnet direct drive wind power generator. Background technique [0002] With the large-scale application of wind power generation technology, the annual power generation directly affects the investment profit rate of the wind power market and has become an increasingly important assessment indicator. The MTBF (Mean Time Between Failure) of the wind power generation system It has become the main factor affecting the annual power generation. In a wind power generation system, the working state of the wind power converter has a major influence on the MTBF. [0003] In the existing technical solutions, in order to avoid the impact of the wind power converter failure on the MTBF of the wind power generation system, the wind power converter failure is generally divided into two sit...
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IPC IPC(8): H02J3/38
CPCH02J3/386Y02E10/76
Inventor 符松格
Owner BEIJING ETECHWIN ELECTRIC