Converter system and double-fed wind turbine generator set shutdown method
A doubly-fed generator and converter system technology, applied in wind power generation, control generator, control system, etc., can solve problems such as damage, stator contactor sintering, and influence on the converter system, so as to ensure the design life, Effects that reduce impact and weaken action requirements
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] Such as Figure 4 As shown, in this embodiment, the rotor-side switch 12 adopts the rotor contactor 121 (K2), and the grid-side protection device 16 adopts the grid-side circuit breaker 161 .
[0047] By operating the rotor contactor 121 and keeping the stator circuit breaker 10 closed, it is possible to eliminate the impact of high induced voltage on the double-fed transformer caused by the large slip state of the wind double-fed generator during the normal start-up and shutdown of the double-fed wind turbine. The impact of the machine-side converter and the grid-side converter in the converter weakens the operation requirements for the stator circuit breaker 10. Because the limit of the number of actions of the contactor is generally far greater than that of the circuit breaker, the design life of the doubly-fed generator and converter system is guaranteed.
[0048] Of course, during the normal shutdown process of the doubly-fed wind turbine, the stator circuit break...
Embodiment 2
[0053] Such as Figure 5 As shown, in this embodiment, the rotor-side switch 12 adopts the rotor contactor 121 , and the grid-side protection device 16 adopts the grid-side circuit breaker 161 .
[0054] In other embodiments, the grid-side circuit breaker 161 may be replaced by a grid-side fuse 162 .
[0055] In order to reduce the negative effect that the stator winding of the doubly-fed generator obtains the excitation current due to maintaining the closure of the stator circuit breaker 10 when the doubly-fed wind power generating set is shut down, this embodiment is also provided with a capacitor group 17, which adopts The star connection method is connected to the three-phase line between the stator circuit breaker 10 and the stator winding of the doubly-fed generator 100 .
[0056] After the capacitor group 17 is connected to the three-phase line between the stator circuit breaker 10 and the stator winding of the double-fed generator 100, the capacitive current generated...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com