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Load distribution method and device for power supply system

A technology of power supply system and load distribution, which is applied in the direction of circuit devices, AC and DC network circuit layout, electrical components, etc., and can solve the problems of low efficiency of power supply system and difficulty in finding balance, etc.

Active Publication Date: 2021-05-14
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0004] The present invention provides a load distribution method and device for a power supply system, which solves the difficulty in distributing load power among multiple transformers in the power supply system when the AC-DC hybrid power supply system supplies power to DC loads and AC loads at the same time in the prior art. Find the balance of technical issues that lead to inefficient use of the power supply system

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  • Load distribution method and device for power supply system
  • Load distribution method and device for power supply system
  • Load distribution method and device for power supply system

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Embodiment Construction

[0044]The present invention is further detailed in conjunction with the accompanying drawings and examples. It will be appreciated that the specific embodiments described herein are merely illustrative of the invention and are not limited thereto. It will also be noted that in order to facilitate the description, only the parts associated with the present invention are shown in the drawings rather than all structures.

[0045]It should be noted that the specifiers and claims of the present invention and the terms "first", "second", "second", or the like are used to distinguish the different objects, not to define a particular order. The various embodiments of the present invention may be performed separately, and each embodiment may be performed mutually performed, and the embodiment of the present invention is not specifically limited.

[0046]This embodiment provides a load allocation method of a power supply system, wherein the power supply system includes n sets of transformers, N ≥ 2...

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Abstract

The invention discloses a load distribution method and device for a power supply system, and the method comprises the steps of: starting n transformers at the same time when the sum of the power of a DC load and the power of an AC load is greater than or equal to P0, enabling each of the first (n-1) transformers to bear the load capacity of p1, and enabling the n-th transformer to bear the load capacity of p2; reducing the load capacities of the first (n-1) transformers by a first preset value every first preset time, and increasing the total reduced load capacity of the first (n-1) transformers to the n-th transformer; calculating system efficiency eta total after load capacity distribution; and comparing the system efficiency eta total after each load capacity distribution with the previous system efficiency eta total, and if eta total m-1 is less than or equal to eta total m and eta total m is greater than or equal to eta total m+1, determining the load capacity distribution corresponding to the system efficiency eta total m as the optimal load distribution. According to the invention, the technical effects that an AC / DC hybrid power supply system automatically optimizes and distributes the load power and the use efficiency of the power supply system is maximized are realized.

Description

Technical field[0001]Embodiments of the present invention relate to the field of load distribution, and more particularly to a load distribution method and apparatus for a power supply system.Background technique[0002]With the continuous maturity of power electronics, the power electronics transformer (PET) equipment developed by power electronics technology has also been widely used. Among them, the power electron transformer is used as an energy conversion hub to form a wide range of advantages. If the control is more flexible, energy can achieve bidirectional flow, high energy conversion efficiency, multi-port, and power can be automatically distributed, such a DC The hybrid power supply system is getting more popular with electricity users.[0003]However, the DC mixed power supply system requires simultaneous DC load and AC load, so it is difficult to find a balance on the power distribution of the transformer, so that the use efficiency of the power supply system is low, resulti...

Claims

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Application Information

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IPC IPC(8): H02J4/00
CPCH02J4/00Y02E60/60
Inventor 钟荣富何建宗郑风雷夏云峰何文志赵树宏
Owner GUANGDONG POWER GRID CO LTD
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