Synchronous condenser start-up grid-connected circuit and control method based on pre-connected large impedance
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF SCI & TECH
- Publication Date
- 2020-07-07
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Abstract
Description
technical field
[0001] The invention belongs to the start-up control technology of a synchronous condenser, in particular to a start-up grid-connected circuit and a control method for a synchronous condenser based on pre-connected large impedance. Background technique
[0002] The synchronous condenser can provide reactive power compensation to the grid, and has high application value in the field of high-voltage direct current transmission. The synchronous condenser is a rotating motor. Its operation and maintenance are more complicated than static var compensation equipment. It is likely that there will be a large excitation inrush current and surge voltage during the start-up process of grid connection. If the start-up control method is improper, it will cause an impact on the power grid. Therefore, it is meaningful to design a suitable start-up grid-connection circuit and an effective timing start-up grid-connection control method for synchronous condensers.
[0003] Ai...