AC/DC hybrid power system security correction method based on second-order cone

• Main Authors: BI RUYU, GUO ZIYU, XU XIALING, CHEN RUSI, YE JING, LIN TAO
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2018
• 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 belongs to the field of power system security correction, in particular to an AC/DC hybrid power system security correction method based on a second-order cone. The strategy comprises the following steps: 1) proposing a power flow model in the form of the second-order cone including TCSC (Thyristor Controlled Series Compensation) and MTDC (Multi-terminal HVDC) power grids, and establishing a corresponding optimized mathematical model based on the power flow model to greatly increase the optimal calculation speed; 2) screening generators and loads with the best regulation effectsbased on heuristic search to serve as optimization variables, and reducing the number of the optimization variables to further increase the optimization speed; and 3) using DC power and TCSC element parameters as the optimization variables to reduce load shedding. The method has the beneficial effects that 1) the time to develop a security correction scheme is shortened greatly, and online calculation of the security corr