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Closed-loop test system and method of modular multilevel converter control apparatus

A modular multi-level, control device technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of inability to respond quickly to different control device test requirements, poor flexibility, and high cost. Achieve the effect of meeting the performance test requirements

Inactive Publication Date: 2015-10-28
NR ELECTRIC CO LTD +1
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Problems solved by technology

In this way, the number of sub-modules controlled by different control devices may be dozens or hundreds. If all sub-modules are used to build a control device test system, it will not only have a large amount of engineering, high cost, but also poor flexibility and cannot respond quickly. Test requirements for different control devices

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  • Closed-loop test system and method of modular multilevel converter control apparatus
  • Closed-loop test system and method of modular multilevel converter control apparatus

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Embodiment Construction

[0017] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, a modular multilevel converter control device controls multiple sub-modules to work together through optical fibers. Different projects have different numbers of sub-modules and different control strategies, and the topology and parameters of primary equipment also need to be modified accordingly during testing. In view of the above, each project and each control strategy uses a corresponding number of sub-modules to build a test system, which not only requires a large amount of engineering, high cost, but also a long time period, which cannot quickly respond to the performance test requirements of the control device.

[0019] like figure 2 As shown, the present invention provides a closed-loop test system for a modular multilevel converter control device. The system includes a modular multilevel converter...

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Abstract

The invention discloses a closed-loop test system and method of a modular multilevel converter control apparatus. The system comprises the modular multilevel converter control apparatus, a converter real-time simulator and a test interface apparatus. The test interface apparatus is composed of a submodule control command receiving module, a submodule state / voltage sending module, a leg current sending module, a polar control system module and a high-speed communication module. The modular multilevel converter control apparatus is connected with the test interface apparatus through fibers, and the test interface apparatus is connected with the converter real-time simulator through fibers and cables to form the closed-loop test system. The test system is simple and easy to use and can conveniently carry out performance testing on the modular multilevel converter control apparatus.

Description

technical field [0001] The invention relates to a closed-loop test system for a modular multilevel converter control device in the fields of flexible direct current transmission, flexible alternating current transmission and the like. Background technique [0002] With the advancement of power electronic devices and control technology, more and more modular multilevel converters are used in flexible direct current transmission and flexible alternating current transmission projects. Due to the increase of system capacity and voltage level, the number of sub-modules is increasing, and the number of three-phase cascaded sub-modules in the flexible DC transmission system can reach thousands, and the number of converter sub-modules in different projects is different. larger. In this way, the number of sub-modules controlled by different control devices may be dozens or hundreds. If all sub-modules are used to build a control device test system, it will not only have a large amou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213
Inventor 陈永奎汪涛张茂强李乐乐陈勇冯亚东
Owner NR ELECTRIC CO LTD
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