Step type virtual inertia control method and device for new energy and storage medium

• Main Authors: WANG MENGJUN, XU HAOTIAN, KE XIANBO, WANG SHANSHAN, MA SHICONG, FAN SHIXIONG, WANG TIEZHU, WANG JILI, HOU WEILIN, JING YIRAN, GUO JIANBO, NIU SHUANBAO, ZHAO BING, ZHANG GANG, HUO CHAO, LUO KUI
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2022
• 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 step-type virtual inertia control method and device for new energy and a storage medium. The method comprises the steps that the frequency change rate of a power grid is measured, and when it is determined that the power grid meets a preset input condition according to the frequency change rate, an impact signal is output; according to the impact signal, calculating the support power which should be put into the power grid in a step mode, and determining the power variation of the maximum power point in the power grid; and determining a power reference value acting on the outer loop control of the new energy unit according to the power variation and the support power. According to the method, the power instruction related to the system frequency is added on the basis of the maximum power point tracking control, so that the original power variable quantity and the step-type input support power act on the power reference value in the outer loop control at the same time, and the frequen