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A technology for operation control and wind farms, applied in circuit devices, wind power generation, electrical components, etc., can solve problems such as waste of resources, impact of wind farm economic benefits, failure to consider the risk of wind farm output exceeding the rated range, etc., to reduce Risk, the effect of reducing economic loss
Inactive Publication Date: 2015-01-14
HITACHI LTD
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[0008] However, in the method of the above patent document 1, only the ultra-short-term predictive control of the energy storage system is considered to reduce the error of wind power prediction, and the problem of maximizing the output of the wind farm is not considered. Therefore, there is a waste of resources. , which in turn has an impact on the economic benefits of wind farms
At the same time, the risk of wind farm output exceeding the rated range is not considered
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no. 1 approach ）
[0024] figure 1 It is a structural block diagram of the wind farm system and the wind farm operation control device in it concerning the 1st Embodiment of this invention.
[0025] Such as figure 1 As shown, the wind farm system combined with energy storage includes a wind farm 101 , a wind power forecasting system 102 , a power dispatching center 103 , a battery energy storage system 104 , a database 10 , an energy storage control device 2 and a wind farm operation control device 1 .
[0026] Wherein, the wind farm 101 is a power plant that utilizes wind power to generate electricity, and outputs wind power. A data collection mechanism not shown is installed in the wind farm to collect wind power data.
[0027] The wind power prediction system 102 has the function of predicting wind power. It can analyze and forecast the power generation of wind farms within a certain operating time in advance according to meteorological conditions, statistical laws and other parameters, and...
no. 2 approach ）
[0078] In the first embodiment, the wind power forecast curve is adjusted in the power generation plan curve setting module 40, so that during the operation of the wind farm, the energy storage control device 2 controls the energy storage system according to the adjusted wind power forecast curve to Compensation for wind farm forecast errors.
[0079] However, when the wind power generation system is running, as time goes by, the actual battery safety margin and the current battery capacity are not the initial margin of the battery, but a state that changes at any time.
[0080] In the second embodiment, the setting process of the wind power prediction curve is the same as that of the first embodiment, and the operation of the wind farm operation control device 1 is the same as that of the first embodiment. The difference between the second embodiment and the first embodiment is That is, during the operation of the wind farm, the safety margin of the storage battery is also ta...
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Abstract
The invention provides a wind farm operation control device which can maximize the output of a wind farm and can reduce losses caused by power limitation and wind curtailment. The wind farm operation control device comprises a data collecting unit, an energy storage system safety allowance calculating unit and a power generating model setting unit. The data collecting unit collects wind power generating historical data in a wind power generating system and energy storage information of an energy storage system, and the energy storage system is the standby power capacity of the wind power generating system and is used for compensating for wind power prediction errors. The energy storage system safety allowance calculating unit is used for calculating the needed energy storage capacity of the energy storage system when the energy storage system compensates for the wind power prediction errors through the collected wind power generating historical data and the collected energy storage information, and the energy storage capacity serves as the safety allowance. The power generating model setting unit is used for establishing a wind power generating prediction model according to the wind power generating historical data, and the difference between the current capacity of the energy storage system and the safety allowance is regarded as part of the output of the wind power generating system in a specified cycle to adjust the wind power generating prediction model.
Description
technical field [0001] This paper relates to a wind farm operation control device and a wind farm operation control method based on a battery energy storage system, in particular to a wind farm operation control device and a wind farm operation control including battery margin estimation aimed at compensating for wind force prediction errors method. Background technique [0002] In recent years, with the rapid development of wind power, the proportion of wind power installed capacity in the grid has continued to increase. In the field of wind power generation, due to the randomness, intermittency, volatility and poor scheduling of wind power output, the impact of wind power grid connection on power quality and power system operation safety will also be more prominent. [0003] In order to ensure the safe and stable operation of the power system, the National Energy Administration issued the "Interim Measures for the Management of Power Forecasting and Forecasting of Wind Po...
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