Operating condition dependency-based microgrid reliability evaluation method of

• Main Authors: LIU SHUANG, MOU LONGHUA, ZHANG XIN
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The present invention proposes an operating condition dependency-based microgrid reliability evaluation method and belongs to the microgrid technical field. The evaluation method includes the following steps that: (1) original data are processed, so that scenes represented by at least one data variable are obtained, and the output values of a micro power source under each scene are determined; (2) the power difference value of the microgrid is calculated, and the charging and discharging power of an energy storage device is determined; (3) voltage and current distribution in the microgrid under each scene is calculated; (4) based on the voltage and current distribution, the probability of occurrence of the dependency of various kinds of fault conditions is calculated according to a power electronic device fault model, a power conversion circuit topology structure and a protection device action probability model in the microgrid; and various types of faults are listed, influence on a reliability index caused b