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Peak cut system

A technology of peak shaving and power system, applied in load forecasting in AC network, power transmission AC network, AC network load balancing, etc., can solve problems such as high fuel prices and high operating costs

Active Publication Date: 2014-05-07
TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, today, the price of fuel required to drive power generation equipment is extremely high
Therefore, the drive of the power generation device requires a high operating cost, which is a serious problem

Method used

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Experimental program
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Embodiment approach

[0032] figure 1 It is a schematic diagram showing the configuration of the peak cutting system 100 according to the embodiment of the present invention.

[0033] Such as figure 1 As shown, the peak shaving system 100 involved in this embodiment is composed of a load 1, a power storage device 2, a control unit 3, a PCS (Power Conditioning Subsystem, power conditioning subsystem) 4, a power generation device 5, a power receiving unit 6, and a power System 7 constitutes.

[0034] The load 1 is installed in the electrical system on the customer's side. The load 1 is an electric device or the like including an electric device that operates by receiving electric power, and is installed in a factory or a building. In addition, in figure 1 Although only one load 1 is shown in the figure, there may be a plurality of loads. Load 1 can receive supply of discharged power from power storage device 2 in addition to supply of power from electric power system 7 , and can also receive ...

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PUM

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Abstract

The purpose of the present invention is to provide a peak cut system which can reduce the running cost of a power generating device even when a peak cut processing is carried out. In a peak cut system (100) according to the present invention, a control unit (3) executes such a control procedure that a peak cut processing is first carried out only by the electrical discharge from an electrical storage device (2) and the electrical power generation by an electrical power-generating device (5) is carried out only when a predetermined amount of peak cut cannot be achieved only by the electrical discharge from an electrical storage device (2).

Description

technical field [0001] The present invention relates to a peak cutting system that is interconnected with a power system and cuts the peak of received power from the power system. Background technique [0002] For the purpose of peak-shaving received power from the electric power system, in-house power generation systems interconnected with the electric power system have been introduced in the past (for example, Patent Document 1 and Patent Document 2). [0003] In the technique disclosed in Patent Document 1, a conversion device converts power generated by a power generation device or / and power supplied from a power grid to a secondary battery, or discharges power generated by a power generation device and a secondary battery. Power is supplied to the load. Then, the control device controls the operation of the secondary battery so that the sum of the power generated by the power generator and the discharged power of the secondary battery does not fall below the power cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/00H02J3/38
CPCH02J3/32H02J3/38H02J3/34H02J3/003H02J4/00
Inventor 花田雅人
Owner TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP