Title:
WIND POWER GENERATING SET SAFETY CHAIN SYSTEM, MONITORING METHOD, VARIABLE PITCH CONTROLLER AND WIND POWER GENERATING SET
Document Type and Number:
WIPO Patent Application WO/2022/068255
Kind Code:
A1
Abstract:
A wind power generating set safety chain system, a monitoring method, a variable pitch controller and a wind power generating set. The wind power generating set safety chain system comprises variable pitch cabinets (41) and a first safety chain (50). Each variable pitch cabinet (41) is internally provided with a variable pitch controller (42); the first safety chain (50) comprises first relays (51) corresponding to the variable pitch cabinets (41), each first relay (51) comprising a first coil (511) and a first contact (512), the first contact (512) being connected to the variable pitch controller (42); the variable pitch controller (42) obtains a first voltage signal of a power supply line of the first coil (511) by means of a first monitoring input port; and under the condition that the first voltage signal is a high-level signal, the wind power generating set continues operating for at least a period of time, thereby improving the accuracy of safety monitoring of a safety chain of the wind power generating set, and avoiding power generation loss caused by the shutdown of the wind power generating set due to misjudgment.
Inventors:
MA LEI (CN)
WANG DAWEI (CN)
YAO XIAOLI (CN)
ZHOU JIE (CN)
WANG DAWEI (CN)
YAO XIAOLI (CN)
ZHOU JIE (CN)
Application Number:
PCT/CN2021/099132
Publication Date:
April 07, 2022
Filing Date:
June 09, 2021
Export Citation:
Assignee:
BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO LTD (CN)
International Classes:
F03D7/00; F03D17/00; H01H47/00
Domestic Patent References:
| WO2020047098A1 | 2020-03-05 |
Foreign References:
| CN112160867A | 2021-01-01 | |||
| CN211500869U | 2020-09-15 | |||
| CN109254244A | 2019-01-22 | |||
| CN104963809A | 2015-10-07 | |||
| CN105508136A | 2016-04-20 | |||
| CN101571104A | 2009-11-04 | |||
| CN108894914A | 2018-11-27 | |||
| US20150050143A1 | 2015-02-19 | |||
| JP2008118807A | 2008-05-22 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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