Reliability evaluation method, medium and device for alternating-current and direct-current hybrid system

• Main Authors: REN YONG, HU BO, ZHANG HANHUA, YANG HUIBIAO, GU WENBO, MA XIN, SHAO CHANGZHENG, ZHOU LEI, LI CHUNYAN, XUE FEI, LI HONGQIANG, GU YUJIA, WU MEIRONG, LI XUTAO, XU TAN, TANG ZHANWEN, ZHOU YANGHAN
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a reliability evaluation method, medium and device for an AC/DC hybrid system, and the method comprises the steps: carrying out the sampling of a sequential Monte Carlo method based on the obtained transfer rate between the states of all elements in the AC/DC hybrid system containing simultaneous transmitting and receiving nodes, and generating a time sequence state of the AC/DC hybrid system; based on the time sequence state of the alternating-current and direct-current hybrid system, solving the optimal load shedding power flow model in the typical load scene to obtain the minimum load shedding amount of the alternating-current and direct-current hybrid system in the time sequence state; calculating an expected estimated value of the reliability index of the alternating current-direct current hybrid system based on the minimum load cutting capacity in the time sequence state; and repeating the steps until the expected estimated value of the reliability index meets the convergence con