Method for minimizing peak-valley difference by coordinating electric heat storage load with battery energy storage

A battery energy storage and electric heat storage technology, applied in the power grid field, can solve the problems of high volatility and intensified peak shaving capacity of traditional thermal power units.

Active Publication Date: 2019-02-22
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
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Problems solved by technology

[0002] It can be seen from the load data of the power grid throughout the day that the power consumption of the power grid load fluctuates greatly within a day, which intensifies the peak-shaving capacity of traditional thermal power units

Method used

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  • Method for minimizing peak-valley difference by coordinating electric heat storage load with battery energy storage
  • Method for minimizing peak-valley difference by coordinating electric heat storage load with battery energy storage
  • Method for minimizing peak-valley difference by coordinating electric heat storage load with battery energy storage

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Embodiment 1

[0162] The current temperature in a certain regional power grid is cj=35 degrees Celsius; the relative humidity of the air is H j = 46%; the altitude value of the battery energy storage area h = 867m; the weather state correlation coefficient value is based on experience k r = 1.0147; k c =0.9915; material thermal conductivity ε of energy storage battery r =4.172W; battery energy storage temperature T B =27℃; battery capacity C r =10MW; battery charging efficiency η Ii =97.77%; battery discharge efficiency η Oi =98.79%; battery charging rate V BIi =2.3C / h; battery charging rate V BOi =2.1C / h; the sum of rated power of all power stations Q a =198MW; peak load Q yj =176MW; electricity load Q in low valley hours yd =69MW; average light intensity G=1043W / h; wind speed F=1.2m / s. , the electric heat storage load capacity in the grid is 47MW.

[0163] Step 1: Calculate the load capacity Q of electric heat storage load at the peak time according to the weather conditions 1...

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Abstract

The invention belongs to the technical field of power grids and particularly relates to a method for minimizing a peak-valley difference by coordinating an electric heat storage load with battery energy storage, and the power grids can minimize the peak-valley difference by coordinated operation of the electric heat storage load and the battery energy storage. The method includes the following steps: performing data acquisition; performing prediction calculation on a household load during a peak period; calculating influence of electricity price A on an added electric storage heat load at a valley moment; calculating charging and discharging coefficients of the battery energy storage; calculating charging and discharging time of a storage battery; and performing calculation on the method for minimizing the peak-valley difference according to the influence factors and period and valley moments. The method can alleviate the peak load regulating pressure of a unit, and can relieve outputof a heat power unit at the peak moment, so that the peak load regulating pressure of the heat power unit is reduced. A corresponding electricity price can be made from difference of electricity consumption in different periods, peak load shaving can be performed by combination of the storage battery, and the peak-valley difference is minimized.

Description

technical field [0001] The invention belongs to the technical field of power grids, and in particular relates to a method for coordinating and maximizing the peak-to-valley difference between electric heat storage load and battery energy storage. Valley difference. Background technique [0002] It can be seen from the load data of the power grid throughout the day that the power consumption of the power grid load fluctuates greatly within a day, which intensifies the peak-shaving capacity of traditional thermal power units. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention proposes a method of coordinating and maximizing the electric heat storage load and battery energy storage to reduce the peak-to-valley difference. The purpose of the invention of peak shaving pressure. [0004] The technical solution adopted by the present invention to solve its technical problems is: [0005] The method of coordinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/32
CPCH02J3/28H02J3/32H02J3/003
Inventor 王顺江张明悦张宏宇邵宝珠曹丽娜高潇吕旭明金研周小明张铁岩王澎王志斌张忠林周桂平丛海洋罗桓桓丛培贤葛维春葛延峰李家珏刘前卫
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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