Title:
WIND GENERATOR SET, CONVERTER, AND LOW-VOLTAGE RIDE-THROUGH DETECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/127270
Kind Code:
A1
Abstract:
A wind generator set, a converter, and a low-voltage ride-through detection method and device. The low-voltage ride-through detection method comprises: determining an adjustment value of a preset parameter of a power grid on the basis of a power grid voltage (S101), the preset parameter comprising at least one of a current, a current frequency, and a power factor angle; adjusting the preset parameter of the power grid on the basis of the adjustment value (S201); and detecting, on the basis of a power grid voltage after the preset parameter of the power grid is adjusted, whether the power grid meets a low-voltage ride-through condition (S103). Therefore, a power grid fault of the wind generator set under a weak power grid can be accurately identified, so as to enter a low-voltage ride-through state, thereby avoiding instability of a power grid fault ride-through system under the weak power grid.
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Inventors:
WU LEI (CN)
Application Number:
PCT/CN2021/120987
Publication Date:
June 23, 2022
Filing Date:
September 27, 2021
Export Citation:
Assignee:
XINJIANG GOLDWIND SCIENCE & TECH CO LTD (CN)
International Classes:
G01R31/00; G01R31/08; G01R31/34; H02J3/12; H02J3/38
Foreign References:
| CN113325246A | 2021-08-31 | |||
| CN110581565A | 2019-12-17 | |||
| CN106953355A | 2017-07-14 | |||
| CN105281366A | 2016-01-27 | |||
| CN111327075A | 2020-06-23 | |||
| CN102121966A | 2011-07-13 | |||
| CN104795842A | 2015-07-22 | |||
| CN101968032A | 2011-02-09 |
Other References:
OUYANG SEN;MA WENJIE: "Low voltage ride through control strategy of photovoltaic inverter considering voltage fault type", ELECTRIC POWER AUTOMATION EQUIPMENT, vol. 38, no. 9, 3 September 2018 (2018-09-03), pages 21 - 26, XP055944362, ISSN: 1006-6047, DOI: 10.16081/j.issn.1006-6047.2018.09.004
WANG, GUO-QUAN; CHANG, HAI-SONG; HAN, JIAN-PENG: "Study on Optimization of Low Voltage Ride through for Doubly Fed Wind Power Generation System", TELECOM POWER TECHNOLOGY, vol. 34, no. 1, 25 January 2017 (2017-01-25), CN , pages 126 - 127, XP009537672, ISSN: 1009-3664, DOI: 10.19399/j.cnki.tpt.2017.01.050
CHEN WEIZU , SUN LIGUO , DAI DEGANG: "A review of research on low-voltage ride-through technology in photovoltaic grid-connected", TECHNOLOGY WIND, 25 December 2013 (2013-12-25), pages 43 - 43, XP055944363, ISSN: 1671-7341, DOI: 10.19392/j.cnki.1671-7341.2013.24.035
CHEN TIANYI;CHEN LAIJUN;ZHENG TIANWEN;MEI SHENGWE: "LVRT Control Method of Virtual Synchronous Generator Based on Mode Smooth Switching", POWER SYSTEM TECHNOLOGY, vol. 40, no. 7, 6 May 2016 (2016-05-06), pages 2134 - 2140, XP055944365, ISSN: 1000-3673, DOI: 10.13335/j.1000-3673.pst.2016.07.030
WANG, GUO-QUAN; CHANG, HAI-SONG; HAN, JIAN-PENG: "Study on Optimization of Low Voltage Ride through for Doubly Fed Wind Power Generation System", TELECOM POWER TECHNOLOGY, vol. 34, no. 1, 25 January 2017 (2017-01-25), CN , pages 126 - 127, XP009537672, ISSN: 1009-3664, DOI: 10.19399/j.cnki.tpt.2017.01.050
CHEN WEIZU , SUN LIGUO , DAI DEGANG: "A review of research on low-voltage ride-through technology in photovoltaic grid-connected", TECHNOLOGY WIND, 25 December 2013 (2013-12-25), pages 43 - 43, XP055944363, ISSN: 1671-7341, DOI: 10.19392/j.cnki.1671-7341.2013.24.035
CHEN TIANYI;CHEN LAIJUN;ZHENG TIANWEN;MEI SHENGWE: "LVRT Control Method of Virtual Synchronous Generator Based on Mode Smooth Switching", POWER SYSTEM TECHNOLOGY, vol. 40, no. 7, 6 May 2016 (2016-05-06), pages 2134 - 2140, XP055944365, ISSN: 1000-3673, DOI: 10.13335/j.1000-3673.pst.2016.07.030
Attorney, Agent or Firm:
MING & SURE INTELLECTUAL PROPERTY LAW FIRM (CN)
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