Method for enlarging wide rated voltage and high-voltage ride-through ranges of double-fed wind turbine generator set

• Main Authors: CAO BEIZHEN, ZHOU YING, ZHENG DAZHOU, QIANG XICHEN, HU KAIWEN, YUAN YUJIE, MO ERBING, ZENG DONG, CHENG JIAN, LIU JIANGHUA
• Format: Patent
• Language: Chinese; English
• Published: 28.08.2018
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a method for enlarging wide rated voltage and high-voltage ride-through ranges of a double-fed wind turbine generator set, and the method comprises the steps: 1, establishing anew and old dual rated voltage conversion model of a wide voltage operation range; 2, determining a magnetization running curve of a wide rated voltage operation region of the double-fed generator; 3, determining a wide voltage operation range and a high-voltage ride-through range on a new axis of each mode; 4, extending an electrical topological graph that can satisfy the amplitude and time of ahigh-voltage ride-through voltage. The method provided by the invention can further improve the most fundamental requirements for the high-voltage ride-through capability of the double-fed wind turbine generator set, and the double-fed wind turbine generator set can meet the requirements of wide rated voltage, high voltage and high-voltage ride-through requirements. The method can meet the high-voltage ride-through operat