Bridge type DC energy consumption device and control method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NR ELECTRIC CO LTD
- Publication Date
- 2019-03-29
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of high-power electric current conversion, and in particular relates to a bridge-type DC energy consumption device and a control method. Background technique
[0002] In HVDC power transmission system, DC energy consumption device is a crucial equipment. DC energy consumption devices are mainly used in the application scenarios of new energy power generation and transmission. If the power generation end is an inertial power source similar to wind power, when the power receiving end fails, because the power cannot be sent out, the energy will be accumulated on the DC side, resulting in the failure of the DC transmission line. The voltage rise will cause harm to the safe operation of the equipment.
[0003] The commonly used technical solution in the prior art is to use power semiconductor devices, such as IGBT directly connected in series and a centralized resistance solution. The IGBT valve string is subjec...