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A control strategy for realizing flexible control of multi-distribution sub-area electric energy based on decoupling multi-port

A control strategy and multi-port technology, applied in the direction of control/regulation systems, electrical components, circuit devices, etc., can solve problems such as existing and difficult continuous controllable adjustment of electric energy, so as to improve stability and reliability, and improve fault tolerance performance and continuous power supply capability, performance-enhancing effects

Active Publication Date: 2018-12-21
HARBIN ENG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, there are many problems in the existing technology that it is difficult to achieve continuous controllable adjustment of electric energy, and the switching can only exist between distribution buses of the same voltage level.

Method used

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  • A control strategy for realizing flexible control of multi-distribution sub-area electric energy based on decoupling multi-port
  • A control strategy for realizing flexible control of multi-distribution sub-area electric energy based on decoupling multi-port
  • A control strategy for realizing flexible control of multi-distribution sub-area electric energy based on decoupling multi-port

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] The present invention provides a control strategy based on decoupling and multi-ports to realize flexible regulation of electric energy in multiple power distribution zones (this patent is four ports, and can be extended to more ports). Each port of the multi-port converter is connected to an independent power distribution partition, and the multi-port converter is used as an energy exchange center to realize energy transfer between multiple power distribution partitions. Through the control of the multi-port converter, each The voltage of each distribution zone is maintained within its normal operating range. When a power distribution partition fails or is overloaded, the power distribution partition with power redundancy will transmit electric power to it under the condition of ensuring its own stable operation, so as to maintain the normal operation of the en...

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Abstract

The invention belongs to the research field of power electronics technology, the invention relates to a control strategy for realizing the flexible control of multi-distribution sub-area electric energy based on decoupling multi-port, including designing current controllers GAC, GBC, GCC, GDC and voltage controllers GAU1, GAU2, GAU3, GBU1, GBU2, GBU3, GCU1, GCU2, GCU3, GDU1, GDU2, GDU3 according to the specific performance requirements of the system; according to the stable state of each distribution area, Setting Distribution Zone A, B, C and D as respectively uAN, uBN, uCN and uDN, and the upper and lower threshold values of DC bus voltage for stable operation of intermediate common port E as respectively uHE and uLE, and the phases of driving signals of full-bridge converters FBE1 and FBE2 in common port E are zero phase; The novel multi-port DC distribution system proposed in this patent can improve the stability and reliability of the distribution system, improve the fault-tolerant performance and sustainable power supply capacity of the distribution system, and realize the automatic and flexible transmission of electric energy between various distribution regions.

Description

technical field [0001] The invention belongs to the field of power electronics technology research, and in particular relates to a control strategy based on decoupling multi-ports to realize flexible regulation of electric energy in multiple power distribution partitions. Background technique [0002] With the development of urban technology, the improvement of urban management level and the further advancement of the concept of smart city, the disadvantages of the traditional distribution network planning model are gradually exposed, especially the distribution network planning in the urban center area has been difficult to meet the development requirements of modern urban power grids. The main manifestations are that the current site layout is not reasonable enough, the power pipeline is tight, the development of power distribution automation is lagging behind, and the urban ecological environment is not compatible. Urban distribution network planning has entered the stage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/00H02M3/335
CPCH02J1/00H02M3/33584H02J1/082
Inventor 游江刘洪胜王西贝程连斌
Owner HARBIN ENG UNIV
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