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A kind of DC energy dynamic regulation system and control method

A technology of dynamic adjustment and control method, applied in the direction of DC network circuit devices, electrical components, circuit devices, etc., can solve the problems of rising failure probability and high cost

Active Publication Date: 2022-07-22
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, because the above problems cannot be solved in the prior art, it is necessary to adopt a point-to-point communication method with higher cost
However, the point-to-point method introduces more communication ports and communication links, and the probability of failure increases

Method used

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  • A kind of DC energy dynamic regulation system and control method
  • A kind of DC energy dynamic regulation system and control method
  • A kind of DC energy dynamic regulation system and control method

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] like figure 1 As shown, it is the first embodiment of the present invention, a DC energy dynamic adjustment system. The system includes N voltage-equalizing energy consumption modules 1 connected in series in the same direction, and N is an integer greater than or equal to 2; The module includes a parallel connection between a DC capacitor 3 and an energy dissipation branch, which is formed by a series connection of a first power semiconductor device 2 and an energy dissipation resistor 4; the voltage equalization energy dissipation module also includes a bypass switch 5, so The bypass switch is connected in parallel with the first power semiconductor device; the system further includes M sub-module control units 7 and a main control unit 11, M≤N; the sub-module control unit includes at least two communication units 8; the main control unit Including a first g...

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Abstract

The invention discloses a direct current energy dynamic adjustment system. The system includes N voltage-equalizing energy-consuming modules connected in series in the same direction, the system further includes N sub-module control units and a main control unit; After the communication unit is connected in series, it is connected with the communication unit of the main control unit, M≤N. The present invention also includes a control method of the system. The system and method of the present invention realizes the communication networking of the DC energy dynamic adjustment system in a low-cost manner, replaces the redundancy of the equipment body through the redundancy of communication configuration, improves the reliability of the system, and the overall solution is cost-effective.

Description

technical field [0001] The invention belongs to the technical field of high-power power electronic converters, and in particular relates to a direct current energy dynamic adjustment system and a control method. Background technique [0002] In the HVDC transmission system, the DC energy dynamic regulation system is used in the application of HVDC energy consumption, and the HVDC energy consumption is mainly used in the application scenario of island power supply. When a fault occurs, because the power cannot be sent out, energy will be accumulated on the DC side, causing the voltage of the DC transmission line to rise, which will endanger the safe operation of the equipment. [0003] Existing HVDC transmission technology or DC energy consumption technology adopts modular multi-level technology, and the system contains a large number of sub-modules and power semiconductor devices. In order to ensure the reliability of control and communication, the control system usually ado...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00
CPCH02J1/00H02J13/00
Inventor 谢晔源王宇姜田贵李海英曹冬明
Owner NR ELECTRIC CO LTD