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Optimal control method for timing matching degree between photovoltaic storage power station and load

A technology of time sequence matching and optimal control, applied in photovoltaic power generation, energy storage, AC network load balancing, etc., can solve the problems of system active power balance shock, violent fluctuation of output power of photovoltaic power station, etc., to reduce power fluctuation and improve consumption level , the effect of improving utilization

Active Publication Date: 2021-05-25
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO +1
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Problems solved by technology

According to the statistics of the actual power station, during the period of strong solar radiation from 10:00 to 15:00, the movement of clouds may cause the output power of the photovoltaic power station to fluctuate violently in a short period of time, causing an impact on the active power balance of the system

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  • Optimal control method for timing matching degree between photovoltaic storage power station and load
  • Optimal control method for timing matching degree between photovoltaic storage power station and load
  • Optimal control method for timing matching degree between photovoltaic storage power station and load

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] Such as figure 1 As shown, the optimal control method for timing matching degree between photovoltaic storage power station and load includes the following steps:

[0050] Step 1. Collect historical output data of photovoltaic power plants. Select the historical output data of 365 days in a complete year, and remove the abnormal data, and the time interval dt of the power generation output data is set to 5 minutes. figure 2 The 365-day historical power generation output curve of the photovoltaic power station is given.

[0051]Step 2. Collect historical power load data. Select the historical power load of 365 days in a complete year within the line, and eliminate abnormal data. The time interval of power load data and photovoltaic power generation data must be consistent at 5 minutes. image 3 The 365-day historical curve of the el...

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Abstract

The invention discloses a method for optimizing the matching degree of the time sequence between an optical storage power station and a load, in order to effectively improve the consumption level of photovoltaics, reduce the investment and operation and maintenance costs of energy storage equipment, and improve the utilization rate of the equipment. By controlling the charging and discharging power of the energy storage battery, the invention improves the time sequence matching degree between the optical storage power station and the load, and reduces the power fluctuation of the line and the disturbance to the power grid. This method has the advantages of clear process and clear physical concept, which can effectively improve the absorption level of photovoltaics and reduce the investment and operation and maintenance costs of energy storage equipment.

Description

technical field [0001] The invention relates to an optimization control method for timing matching between a photovoltaic storage power station and a load, and belongs to the technical field of photovoltaic power generation. Background technique [0002] my country's distributed photovoltaic power generation has continued to develop rapidly, and its installed capacity has grown rapidly. It has become one of the important power sources in the system. The development of distributed photovoltaics in the central and eastern regions continues to accelerate, and Jiangsu, Zhejiang, Shandong, Anhui and other places have become the main areas for distributed photovoltaic installations. [0003] Due to the randomness and volatility of photovoltaic power generation, the connection of large-capacity photovoltaic power generation to the grid increases the difficulty of power balance in the system. According to the statistics of the actual power station, during the period of strong solar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32Y02E10/56Y02E70/30
Inventor 方美芳葛路明张聂鹏于若英王满商王湘艳杨利荣曲立楠白少锋胡航
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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