Hybrid energy consumption device and control method thereof
A technology of energy-consuming devices and control methods, applied in the direction of power network operating system integration, information technology support systems, climate sustainability, etc., can solve the problems of high energy consumption and high prices, and achieve reduced flow resistance, reduced costs, and reduced cost effect
Active Publication Date: 2020-06-05
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology
The centralized energy consumption device is composed of an energy consumption branch and an energy consumption resistor. After detecting the rise of the DC voltage, the energy consumption resistor is used to undertake the consumption of power surplus. However, the centralized energy consumption device cannot maintain the stability of the DC voltage during the input stage. ; The distributed energy consumption device can still maintain the stability of the DC voltage during the input stage of the energy consumption device, and has high performance, but the distributed energy consumption device is composed of a large number of sub-modules, and each sub-module contains semiconductor IGBT devices, and the price of IGBT The high cost of distributed energy consumption devices has increased to a certain extent
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0024] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...
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The invention relates to a hybrid energy consumption device and a control method thereof. The hybrid energy consumption device comprises a centralized energy consumption device and a distributed energy consumption device which are connected to a direct-current line end in parallel, and the centralized energy consumption device and the distributed energy consumption device can be independently or simultaneously put into use. According to the invention, the stable DC voltage of the distributed energy consumption device during the fault period is inherited, the current resistance of the semiconductor device of the distributed energy consumption device is reduced by introducing the centralized energy consumption device, and the cost of the energy consumption device is reduced.
Description
technical field [0001] The invention relates to the technical field of high-power electric current conversion, in particular to a hybrid energy consumption device and a control method thereof. Background technique [0002] Due to its self-shutdown capability and no additional commutation voltage, the flexible DC transmission system overcomes the fundamental defect that the receiving end of the traditional high-voltage DC system must be an active network, making it an excellent solution for island power transmission and offshore wind power transmission. Program. In the flexible DC transmission system, after the AC system fault occurs in the receiving end system, the power of the sending end system cannot be sent out during the fault period, which will cause the voltage of the DC line to rise, and will bring a severe test to the insulation level of the equipment of the entire system. As an important equipment of the flexible DC transmission system, the energy consumption devi...
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IPC IPC(8): H02J3/36H02J3/14
CPCH02J3/36H02J3/14Y04S20/222Y02E60/60Y02B70/3225
Inventor 晁武杰唐志军林国栋林少真郭健生胡文旺李钢邹凯凯王仙荣胡仙来
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD