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Method for controlling electric power of secondary batteries

A secondary battery, power control technology, applied in wind power generation, greenhouse gas reduction, energy storage, etc., can solve problems such as increased loss of auxiliary equipment and reduced operating efficiency of sodium-sulfur batteries

Active Publication Date: 2014-04-23
NGK INSULATORS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, since the heat generated by the heat generated during power generation cannot be obtained, the loss of the auxiliary equipment (heater) increases, and the operating efficiency of the sodium-sulfur battery decreases.

Method used

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  • Method for controlling electric power of secondary batteries
  • Method for controlling electric power of secondary batteries
  • Method for controlling electric power of secondary batteries

Examples

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Embodiment 1

[0084] (Example 1) build based on figure 1 In the grid-connected system 8 shown, the simulation of the power control method of the secondary battery of the present invention is performed. The condition is that, taking 15 sodium-sulfur batteries with a rated power of 2 MW (30 MW in total), the total rated power of the wind power generation devices is 51 MW.

[0085] The operation plan value Pp is changed every time (section), and is set as shown in Table 1. The 15 sodium-sulfur batteries are grouped as shown in Table 2. For the 6 sodium-sulfur batteries belonging to the constant power control group, the constant power control amount is allocated as shown in Table 2 at each time (interval).

[0086] 【Table 1】

[0087] No. Interval (Sec) Operation plan value Pp(kW) 1 0-100 0→0 2 100-200 0→45000 3 200-500 45000→45000 4 500-600 45000→0 5 600-700 0→0

[0088] 【Table 2】

[0089]

[0090] Suppose: A delayed treatment is performed on...

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Abstract

The invention provides a method for controlling electric power of secondary batteries, and aims to provide a method for providing a plurality of secondary batteries highly efficiently operating in a grid-connected system, which combines a generating set and an electric power storage and compensation device with changed output electric power and supplies electric power to an electric power system, to compose of the electric power storage and compensation device and compensate the change of the output electric power. The method for controlling the electric power of the secondary batteries comprises the following steps: dividing a plurality of secondary batteries into a constant electric power control group and a ready response group; allocating preset and constant input output electric power in electric power to be input and output, which is provided by all the secondary batteries for compensating the change of output electric power of the generating set, to the constant electric power control group; and allocating the rest electric power to the ready response group so as to control the input output electric power of each group of the secondary batteries.

Description

technical field [0001] The present invention relates to electric power of secondary batteries in a grid connection system that supplies electric power to a power system by combining a power generating device whose output power fluctuates, such as a wind power generating device, and a power storage compensation device having a plurality of secondary batteries Control Method. Background technique [0002] In recent years, natural energy power generation devices that generate electricity from wind, sunlight, and geothermal heat have attracted attention and are being put into practical use. The natural energy power generation device is a clean power generation device that does not use limited resources such as petroleum, but uses the energy that exists in nature and can suppress carbon dioxide emissions. Therefore, from the perspective of preventing global warming, companies that have introduced, Local governments, etc. will continue to increase. [0003] However, since the en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32
CPCY02E10/763Y02E70/30
Inventor 福原基广
Owner NGK INSULATORS LTD
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