Flexible direct-current electromechanical and electromagnetic hybrid simulation method

A flexible DC and electromagnetic hybrid technology used in the field of power systems
CN103558766AInactive Publication Date: 2014-02-05STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2014-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a flexible direct-current electromechanical and electromagnetic hybrid simulation method. The method comprises the following steps: (1) establishing a flexible direct-current voltage source converter alternating-current side electromagnetic transient state simulation model; (2) establishing a voltage source converter direct-current side power transmission system electromagnetic transient state simulation model; (3) establishing a numerical calculation model of a voltage source converter controller; (4) establishing a phase-locked loop electromagnetic transient state calculation model; (5) performing conversion between an electromechanical quality and an electromagnetic quality; (6) and performing flexible direct-current electromechanical and electromagnetic hybrid simulation. Through the method provided in the invention, the simulation calculation accuracy of an alternating-current / direct-current hybrid power grid including a flexible direct-current circuit can be improved, and an accurate simulation tool is provided for hybrid power grid characteristic analysis and control strategy making.
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Description

technical field

[0001] The invention belongs to the field of power systems, and in particular relates to a flexible DC electromechanical and electromagnetic hybrid simulation method based on user-defined programs. Background technique

[0002] Flexible direct current transmission (VSC‐HVDC) is a new type of direct current transmission technology with a voltage source converter (Voltage Source Converter, VSC) composed of insulated gate bipolar transistors as the core component. This power transmission technology has the technical advantages of being able to supply power to weak AC grids or passive networks, requiring no communication between converter stations at both ends, controlling active and reactive power at the same time, and not affecting the short-circuit current level of the AC grid. Because of its remarkable technical advantages, this power transmission technology has been widely concerned by the academic circles and power engineering circles, and it is a hot field...

Claims

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