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A method for judging the stability of mmc digital-analog hybrid simulation power interface

A technology of digital-analog mixing and power interface, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve the effects of improving stability, high accuracy, and convenient and flexible implementation

Active Publication Date: 2019-03-08
STATE GRID ZHEJIANG ELECTRIC POWER +2
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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a method for judging the stability of the MMC digital-analog hybrid simulation power interface, solves the MMC digital-analog hybrid simulation based on the voltage-type ideal transformer algorithm, and satisfies the stability impedance of the power interface The problem of matching conditions provides technical guidance for the design of MMC digital-analog hybrid simulation system, which greatly improves work efficiency

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  • A method for judging the stability of mmc digital-analog hybrid simulation power interface

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Embodiment Construction

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0059] The invention solves the problem that the MMC digital-analog hybrid simulation based on the voltage-type ideal transformer algorithm meets the stability impedance matching condition of its power interface, provides technical guidance for the design of the MMC digital-analog hybrid simulation system scheme, and greatly improves work efficiency. Utilizing the invention to reasonably plan the MMC digital-analog hybrid simulation can effectively improve the stability and accuracy of the power interface.

[0060] like figure 1 The MMC digital-analog hybrid simulation circuit includes a digital simulation device, a physical simulation device (MMC) and an MMC digital-analog hybrid simulation power interface. Among them, the physical simulation device is the converter valve equipment of the flexible DC transmission, and the digital simulation device is the re...

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Abstract

The invention provides a method for judging stability of an MMC digital-analog hybrid simulation power interface. The method comprises the steps of establishing an MMC digital-analog hybrid simulation equivalent model; performing decoupling operation on the MMC digital-analog hybrid simulation power interface; determining an impedance matching condition which meets the stability of the MMC digital-analog hybrid simulation power interface; and simulating the MMC digital-analog hybrid simulation power interface to verify the validity and reasonability of the impedance matching condition. According to the method for judging stability of the MMC digital-analog hybrid simulation power interface, the problem of the impedance matching condition meeting the stability of the power interface during the MMC digital-analog hybrid simulation realized based on a voltage type ideal transformer algorithm is solved, technical guidance for the scheme design of an MMC digital-analog hybrid simulation system is provided, and the work efficiency is greatly improved. As the MMC digital-analog hybrid simulation is planned reasonably by utilizing the method for judging the stability of the MMC digital-analog hybrid simulation power interface, the stability and precision of the power interface can be improved effectively.

Description

technical field [0001] The invention relates to a judging method, in particular to a method for judging the stability of an MMC digital-analog hybrid simulation power interface. Background technique [0002] With the continuous improvement of China's requirements for sustainable development in the energy field, my country's coal-based energy structure and power supply structure will gradually shift to hydropower, nuclear power, wind power, solar energy and other new energy generation in the next few decades. The structure changes. At the same time, users' requirements for power quality are also constantly improving, and the advantages of using flexible DC transmission technology to realize renewable energy grid connection and power supply to cities are becoming more and more obvious. Among them, modular multilevel flexible DC transmission technology (MMC-HVDC ) has become a recognized development trend. [0003] Although traditional pure digital simulation can change parame...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 贺之渊吴学光刘栋谷怀广林畅朱琳翟雪冰万祥楠
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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