Emergency generator tripping method and system considering low-penetration characteristic of fan

• Main Authors: HUANG XIFANG, FENG YUYAO, WANG YU, YANG XINGANG, LI ZHAOWEI, LI ZENGYAO, XIONG XUEJUN, LIN WENLI, TAO QUANLIN, ZHU LING, LIU FUSUO, ZHANG QIAN, LEI JIE, XU GUANG
• Format: Patent
• Language: Chinese; English
• Published: 05.09.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The method comprises the following steps: setting a power grid operation mode set and a fault scanning set according to a power grid operation condition, and screening a stability control system fortification fault set; performing generator tripping priority ranking on the thermal power generating units under a fortification fault, cutting off the thermal power generating units in sequence until the system is stable, and recording a first maximum power angle value of the remaining thermal power generating units; under the same fortification fault, the generator tripping moment is kept unchanged, different wind turbine generators are added and switched in sequence, the second maximum power angle value of the thermal power generating unit is recorded, and generator tripping priority ranking is carried out on the wind power plant according to the power angle change condition of the thermal power generating unit; and according to a wind power plant priority principle, carrying out priority ranking on wind and the