A method of improving wind power acceptance capacity based on battery energy storage participation

Abstract

The invention discloses a method for improving wind power acceptance capacity based on the participation of battery energy storage, which belongs to the technical field of power grid energy control. The method accurately calculates the SOC parameters of the battery energy storage device as a whole at the current moment, and advances the battery energy storage device. The charging and discharging capacity is judged, and then by calculating the unbalanced power when the wind power fluctuates in the distribution network, the charging and discharging power of each energy storage unit of the battery energy storage device is allocated, so that each energy storage unit in the battery energy storage device Both receive wind power with maximum charging and discharging capacity. Then, under the premise of constraining the charging and discharging power of the battery energy storage unit and the SOC of the state of charge, the charging optimization coefficient and the discharging optimization coefficient are introduced to optimize the charging and discharging power of the entire battery energy storage device when the wind power of the distribution network fluctuates. The optimal charge and discharge power of the battery energy storage device is obtained when the wind power fluctuates in the distribution network, so as to improve the wind power acceptance capacity of the entire battery energy storage device.

Description

technical field [0001] The invention relates to the technical field of power grid energy control, in particular to a method for improving wind power acceptance capacity based on the participation of battery energy storage. Background technique [0002] With the shortage of energy resources and the improvement of environmental requirements, the development and utilization of clean energy power generation has become a research hotspot. Among them, as a relatively mature technology in the development and utilization of renewable clean energy, wind power has the greatest prospect for the development and application of renewable energy. my country's wind turbines are mainly distributed in the "Three North" regions (Northwest, Northeast, and North China) where wind resources are abundant. Power quality and other interferences have caused serious wind curtailment problems, and the distribution network's ability to accept wind power has decreased. [0003] In view of the above-ment...

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Problems solved by technology

The method of improving the power structure of the system will increase the investment cost and operating cost of the power system, consume a large amount of resources, and increase the difficulty of operating the power system; the use of smart grid technology will cause technical limitations and disadvantages for power systems with unsound smart grid technology configurations. It is impossible to fully mobilize battery energy storage resources; wind power forecasting and demand-side management cannot accurately achieve full acceptance of wind power by battery energy storage devices when wind power fluctuates, and wind power forecasting has a large inability, and load demand-side management has problems. big uncertainty

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