Method for observable analysis of AC-DC hybrid electrical power system

• Main Authors: AI XIN, ZUO JIANG, HONG SHANNING, LIU CHONGRU
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2011
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

The invention discloses a method for observability analysis for an alternating current and direct current hybrid electric power system in the technical field of running and controlling of the electric power system. The method adopts the technical proposal that an alternating current system is taken as the core network of the hybrid system, and a direct current system is taken as the subsystem embedded in the core network; firstly, the model of the direct current system is reasonably simplified, and the observability analysis regulations suitable for the double-terminal direct current system and the multi-terminal direct current system are provided; then, under the precondition that the observability analysis observable island merger regulation to the original alternating-current system isnot greatly improved, the concept of the correlation coefficient of the direct current of the boundary node, the observable island merger regulation and the merging steps suitable for the embedded alternating current and dire