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Electricity price excitation method for consumption of blocked wind power by load of heat storage electric boiler

A technology of electric boiler and wind power, which is applied in load forecasting, wind power generation, electrical components and other directions in the AC network, and can solve problems such as large-scale access of wind power to the power grid and transmission blockage

Pending Publication Date: 2021-12-03
STATE GRID GANSU ELECTRIC POWER CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a power price incentive method for thermal storage electric boilers to absorb and block wind power, which is used to solve the problem of large-scale wind power access to the power grid and to provide reference for power grid dispatching

Method used

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  • Electricity price excitation method for consumption of blocked wind power by load of heat storage electric boiler
  • Electricity price excitation method for consumption of blocked wind power by load of heat storage electric boiler
  • Electricity price excitation method for consumption of blocked wind power by load of heat storage electric boiler

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Effect test

Embodiment 1

[0039] figure 1 It is a flow chart of a response control method based on time-of-use electricity price to guide thermal storage electric boiler load to accommodate blocked wind power. figure 1 Among them, the flow chart of a response control method for guiding thermal storage electric boilers to accommodate blocked wind power based on time-of-use electricity prices provided by the present invention includes:

[0040] S1: Collect information such as forecast wind power blockage information, load forecast, etc.;

[0041] S2: According to the collected information, use the fuzzy membership function to divide the time interval of wind power blockage;

[0042] S3: Determine the electricity price in the time interval;

[0043] S4: Encourage the thermal storage electric boiler to adjust the power according to the determined electricity price;

[0044] S5: Calculate the cost and benefit of purchasing electricity by using the electricity price to encourage the absorption of blocked ...

Embodiment 2

[0089] A city in Northwest China plans to build a 4×12MW regenerative electric boiler to provide heating for a residential area, with an electric-to-heat conversion coefficient of 0.98 and a heat storage capacity of 120MWh. There is a wind farm with a single unit capacity of 2MW and a total installed capacity of 70MW in this area; there are 3 thermal power units in total, which provide auxiliary adjustment when the wind power is insufficient, with a total installed capacity of 400MW. The relevant operating parameters are shown in Table 1.

[0090]

[0091] Table 1 Operation parameter table of conventional power unit

[0092] Collect the forecast information of wind power output and load operating power on a typical day, as shown in the following table:

[0093]

[0094] Table 2 Prediction values ​​of load power and wind power output on a day-ahead time scale

[0095] Taking this as an example, the present invention provides a power price incentive method for wind power ...

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Abstract

The invention discloses an electricity price excitation method for consumption of blocked wind power by load of a heat storage electric boiler. The method comprises the following steps of: collecting day-ahead predicted wind power blocking information; dividing a wind power blocking time interval by using a fuzzy membership function according to the collected information; determining time interval electricity prices; exciting the heat storage electric boiler to perform power adjustment according to the determined electricity prices; and based on this, calculating an electricity purchase cost income of consuming the blocked wind power by utilizing electricity price excitation, so as to verify the reasonability of the method. The provided electricity price excitation method for the consumption of blocked wind power by the load of the heat storage electric boiler fully utilizes the flexible adjustment capability of the load of the heat storage electric boiler and the sensitivity of the electricity purchase cost to an electricity price response mechanism, and further solves the problem that the consumption of large-scale access of wind power to a power grid is blocked.

Description

technical field [0001] The invention belongs to the technical field of large-scale wind power grid-connected control, and in particular relates to an electricity price incentive method for thermal storage electric boilers to absorb wind power blocked by load. Background technique [0002] With the increasing proportion of new energy connected to the grid, the impact of random fluctuations in wind power output on grid dispatching operations is increasing. Wind power blockages lead to serious wind curtailment, and the contradiction between power supply and demand is intensifying. Therefore, it is urgent to solve the problem of blocked wind power consumption. [0003] At present, in view of the problem that the wind power consumption of the system is hindered by the connection of wind farms / groups to the grid, the traditional control methods mostly start from the power supply side. District power mutual aid consumption and peak regulation. On the one hand, the method of direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/14G06Q50/06
CPCH02J3/003H02J3/008H02J3/381H02J3/466H02J3/144G06Q50/06H02J2300/28H02J2300/40Y02E10/76Y02B70/3225Y04S10/50Y04S20/222
Inventor 罗世刚窦常永黎启明司晓峰王小龙徐兰兰韩倩文韩小齐刘文颖刘紫东张尧翔张雯程曾贇杨美颖庞清仑申自裕曹钰
Owner STATE GRID GANSU ELECTRIC POWER CORP
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