Doubly-fed wind turbine generator high-voltage ride through control system and working method thereof

• Main Authors: JIAO CHONG, LIU MU, MA HONGYI, LIU PENGCHENG, GUO CHEN, LIU MENGJUN, SUI SHUBO, LIU XIN, WANG JIANZHUANG, YANG LIANG, WANG JUN, WANG XIANWEN, HE ZHAOLAN, LYU JIANBO
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a doubly-fed wind turbine generator high-voltage ride through control system and a working method thereof, and belongs to the technical field of wind power generation. A Crowbar circuit is connected between the rotor of a doubly-fed wind generator and the machine side of a converter, and an unloading circuit is arranged on a direct current bus between the machine side and the grid side of the converter; and the converter, the Crowbar circuit and the unloading circuit are respectively connected with the converter controller, and the converter controller is connected to amain control system of the doubly-fed wind turbine generator. Through the converter, the converter controller, the Crowbar circuit and the unloading circuit, the problems of overvoltage, overcurrent,direct current bus voltage rise and the like in the voltage rise transient process can be solved when the doubly-fed wind turbine generator generates high-voltage ride-through, so that the generatoris safe, stable and free of