Modularized multi-level flexible DC (Direct Current) topology circuit applicable to fault ride-through

A modular multi-level, topological circuit technology, applied to DC circuits to reduce harmonics/ripples, AC network circuits, circuit devices, etc., can solve the problem of difficult DC fault ride-through, AC fault ride-through, Realize problems such as DC fault ride-through, achieve the effect of improving steady-state operation performance and realizing AC and DC fault ride-through
CN104037754AActive Publication Date: 2014-09-10STATE GRID CORP OF CHINA +1
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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
2014-09-10

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Abstract

The invention provides a modularized multi-level flexible DC (Direct Current) topology circuit applicable to fault ride-through. The topology circuit comprises a modular cascade circuit, a voltage switching circuit and a compensation circuit; after the modular cascade circuit is connected with the voltage switching circuit in parallel, the modular cascade circuit is serially connected with the compensation circuit. According to the modularized multi-level flexible DC topology circuit applicable to fault ride-through provided by the invention, the DC fault ride-through can be simply and effectively realized, therefore the modularized multi-level flexible DC topology circuit is applicable to the field of a high-voltage DC overhead line with high capacity.
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Description

technical field

[0001] The invention relates to a topology structure, in particular to a modular multilevel flexible DC topology circuit suitable for fault ride-through. Background technique

[0002] The flexible direct current transmission system is a direct current transmission system based on a voltage source converter with a fully controlled device (IGBT) as the core. It has superior performance and good application scalability. And many other fields have broad application prospects. In recent years, modular multi-level flexible DC transmission technology has developed extremely rapidly.

[0003] The flexible direct current transmission system is a direct current transmission system based on a voltage source converter with a fully controlled device (IGBT) as the core. It has superior performance and good application scalability. And many other fields have broad application prospects. In recent years, modular multi-level flexible DC transmission technology has developed ...

Claims

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