Flexible AC/DC power distribution area and scheduling control strategy thereof

A dispatching control and power distribution area technology, applied in the direction of AC network voltage adjustment, AC network with the same frequency from different sources, electrical components, etc., to improve efficiency, optimize power output, improve power consumption experience and power supply quality Effect

Active Publication Date: 2019-06-04
NARI TECH CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a flexible AC / DC distribution station area and its scheduling control strategy, which solves the problems existing in the existing distribution station area

Method used

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  • Flexible AC/DC power distribution area and scheduling control strategy thereof
  • Flexible AC/DC power distribution area and scheduling control strategy thereof
  • Flexible AC/DC power distribution area and scheduling control strategy thereof

Examples

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0033] Such as figure 1 As shown in Fig. 1, a flexible AC and DC distribution station area includes EMS, several station areas, several DC new energy sources and DC loads. Each station area is equipped with an AC / DC converter, the AC incoming line of the AC / DC converter is connected to the low-voltage side (380V AC) of the distribution transformer in the station area, and the AC / DC converters of all the station areas The DC outlets are interconnected in a star, ring or series structure, and the DC new energy sources (such as DC photovoltaics, DC wind power) and DC loads are connected to the DC side of the station area directly or through DC / DC converters.

[0034] EMS collects real-time electr...

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PUM

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Abstract

The invention discloses a flexible AC / DC area, which comprises an EMS and a plurality of areas, wherein each area is internally provided with an AC / DC converter; an AC incoming line of each AC / DC converter is connected to a distribution transformer low-voltage side of the corresponding area; DC outgoing lines of the AC / DC converters of all areas are interconnected; and the EMS collects real-time electrical parameters and operating status of the areas, monitors the AC / DC converters in the areas and adjusts control modes and power flow adjustment targets of the AC / DC converters. The invention further discloses a corresponding scheduling control strategy. The scheduling control strategy can realize the effect that the flexible AC / DC area operates in operating modes such as power constraint, fault isolation, fault current limiting, AC supporting, AC transfer and DC transfer, improves the controllability, operation flexibility and power supply reliability, can optimize power output of the areas during power flow adjustment, and improve the efficiency of the areas.

Description

technical field [0001] The invention relates to a flexible AC / DC station area and its scheduling control strategy, belonging to the field of power distribution and power electronics technology. Background technique [0002] The distribution station area or station area generally refers to the AC power distribution method, which usually adopts the closed-loop design and split-ring operation method, which cannot realize the parallel operation of multiple distribution station areas, and cannot realize power flow control and scheduling in multiple distribution station sections function. The AC distribution station area can only meet the load power supply within the rated capacity of its distribution transformer. When the daily average load often exceeds the available capacity of the station area, it is generally necessary to increase the capacity or introduce a power supply line, which is costly and limited. in the construction space. The existing power distribution area adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00H02J3/06H02J3/16H02J9/06
CPCY02E40/30
Inventor 武迪俞拙非骆健孙厚涛陈璐瑶洪丹沈培锋刘强王徐延张昊亮孙国强
Owner NARI TECH CO LTD
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