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Control method for reducing wind power curtailment of battery energy storage system

A technology of a battery energy storage system and a control method, which can be applied to flexible AC power transmission systems, greenhouse gas reduction, wind power generation, etc., can solve problems such as flashing red lights, improve utilization efficiency, improve economy, and ensure safety and reliability. running effect

Active Publication Date: 2013-03-13
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

But at the same time, the problems of wind power grid connection and power consumption are flashing red lights

Method used

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  • Control method for reducing wind power curtailment of battery energy storage system
  • Control method for reducing wind power curtailment of battery energy storage system
  • Control method for reducing wind power curtailment of battery energy storage system

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1-Figure 3 , provide a battery energy storage system to reduce wind farm curtailment control method, the method includes the following steps:

[0021] Step 1: Initialize the charging start parameter α, discharge start parameter β, and SOC lower limit value SOC of the battery energy storage system min and the upper limit value of SOC SOC max ;

[0022] Step 2: Get the real-time wind power P in the tth execution cycle wg (t), real-time PCC node maximum allowable power P max (t) and the real-time state of charge SOC(t) of the battery energy storage system;

[0023] Step 3: Put P wg (t) and battery energy storage system charging reference value α*P respectively max (t) and battery energy storage system discharge reference value β*P max (t) compare, if P wg (t)>α*P max (t) or P wg (t)max (t), the battery energy storage system is s...

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Abstract

The invention provides a control method for reducing wind power curtailment of a battery energy storage system. By means of the control method, the battery energy storage system is combined with wind power generation for application, and by controlling charging and discharging of the battery energy storage system, the wind power curtailment can be reduced, and accordingly grid integration capability of a wind power plant is effectively improved. When curtailment occurs in the wind power plant, the control method for reducing curtailment is provided, so that the battery energy storage system can absorb the wind power which cannot be used in grid integration directly, utilization efficiency of wind resources is improved, and economical efficiency is improved to a certain degree. By means of the control method for reducing wind power curtailment of the battery storage system, state of charge (SOC) level of the battery energy storage system can be maintained, so that overcharging or deep discharging of the battery energy storage system is prevented, and safe and reliable operation of the whole system can be maintained.

Description

technical field [0001] The invention belongs to the technical field of grid-connected applications, and in particular relates to a control method for a battery energy storage system to reduce abandoned wind in a wind farm. Background technique [0002] With the rapid growth of my country's wind power installed capacity, the problem of curtailment of wind power in some areas is becoming more and more serious. In 2012, the Electricity Regulatory Commission issued the "Report on the Supervision of Wind Power Consumption in Key Regions" and pointed out that due to factors such as grid planning coordination and different construction, the main producing areas of wind power development in Northeast China, North China, and Northwest China (hereinafter referred to as the "Three North" regions) in 2011 Abandoned wind power amounted to 12.3 billion kWh, with a wind abandonment rate of about 16%, corresponding to a loss of about 6.6 billion yuan in electricity costs, equivalent to 3.84...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
CPCY02E70/30Y02E40/10Y02E10/766Y02E10/76
Inventor 李建林宋志惠马会萌惠东
Owner CHINA ELECTRIC POWER RES INST
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