AC/DC power supply configuration structure and flexible transformer substation

A configuration structure, AC and DC technology, applied in the direction of AC network circuits, circuit devices, power transmission AC networks, etc., can solve problems such as poor flexibility, and achieve the effects of ensuring uninterrupted, reliable operation, and improving diversity

Active Publication Date: 2020-09-25
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor flexibility of the conventional power supply technology of the data center in the prior art, thereby providing an AC and DC power supply configuration structure and a flexible substation

Method used

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  • AC/DC power supply configuration structure and flexible transformer substation
  • AC/DC power supply configuration structure and flexible transformer substation
  • AC/DC power supply configuration structure and flexible transformer substation

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Embodiment 1

[0031] The embodiment of the present invention provides an AC and DC power supply configuration structure, which is applied to occasions that require multiple DC power supplies or uninterrupted power supplies, such as figure 1 As shown, the AC and DC power supply configuration structure 1 includes: at least one integrated multi-port converter 11 , at least one rectifier 12 , at least two sections of DC bus 13 , and at least one switch module 14 .

[0032] The input end of the integrated multi-port converter is connected with the first external AC power supply and the external DC power supply, and is used to convert the first external AC power supply into various DC power supplies with different voltage amplitudes, and convert the external DC power supply into various A DC power supply with different voltage amplitudes. The DC power supply can be a high-voltage, medium-voltage, or low-voltage DC power supply, which is used to provide power for loads or functional stations with d...

Embodiment 2

[0060] The embodiment of the present invention provides a flexible substation, which is used in complex occasions such as adjusting the load size, optimizing energy between functional stations, and needing to cooperate with power grid scheduling, such as Figure 6 As shown, the flexible substation includes at least one AC / DC power supply configuration structure 1 of Embodiment 1, the rectifier 12 is connected to the data center and its local area network through the second DC bus 132, and the integrated multi-port converter 11 is connected through the first DC bus 131 It is connected with a photovoltaic power station, an energy storage station and a DC load, and at the same time, the integrated multi-port converter 11 is connected with a data center and its local area network through a second DC bus 132 . The flexible substation also includes: coordinated control and energy management system 2 , grid dispatching system 3 , energy storage system 4 and protection system 5 .

[0...

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Abstract

The invention discloses an AC/DC power supply configuration structure and a flexible transformer substation. An integrated multi-port converter and a rectifier in the AC/DC power supply configurationstructure convert an external power supply into DC voltage sources with various voltage amplitudes, and the power supply diversity of the external power supply is improved; the AC/DC power supply configuration structure is connected with various external power supplies, and when a certain external power supply fails, the external power supply is normally operated to supply power to the branch circuit by controlling the on-off of the switch module, thereby ensuring the uninterrupted power supply of the power supply. The coordination control and energy management system of the flexible transformer substation collects the operation state of an AC/DC power supply configuration structure, the operation state of a power grid, the load of a data center and a local area network thereof, and functional station information. The power grid dispatching system timely adjusts the AC/DC power supply configuration structure and the function station operation state according to the information collected by the coordination control and energy management system, and achieves the optimal control of the power grid through the adjustment of the load of the data center and the local area network.

Description

technical field [0001] The invention relates to the technical field of AC and DC power distribution, in particular to an AC and DC power supply configuration structure and a flexible substation. Background technique [0002] As a new generation of AC and DC distribution network technology combining power electronics technology and substation technology, flexible substation technology is of great significance for improving the reliability, quality and flexibility of power supply methods for data centers in my country. The traditional AC uninterruptible power supply mode passes through the multi-stage AC-DC conversion link, and the power supply efficiency is lower than 85%, which makes the energy loss in the conversion link too high, reduces the power supply efficiency of the data center, and it cannot flexibly respond to grid failures and other issues. Traditional data center-oriented substations are not enough to adapt to the expansion and centralized deployment of data cent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02J9/06H02J3/32H02J13/00H02J3/38
CPCH02J3/36H02J9/061H02J3/32H02J13/00006H02J3/381H02J2300/24H02J2300/28Y02E40/70Y02E60/00Y04S10/12Y04S10/14Y04S10/16Y04S20/248Y04S20/12Y02A30/60Y02B70/30Y02B90/20Y04S40/12Y02E10/56
Inventor 宋洁莹杨士慧于建成陆振纲尉志勇霍现旭赵国亮刘海军慕小斌
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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