Control method and device for configuration cost of hybrid energy storage system

Abstract

The invention discloses a control method and device for the configuration cost of a hybrid energy storage system. The control method comprises the steps of: acquiring a target cost function required for calculating the configuration cost of the hybrid energy storage system and a constraint condition corresponding to the target cost function, as a configuration cost control model of the hybrid energy storage system; and calculating the configuration cost control model regarding a configuration parameter in the configuration cost control model till satisfying a configuration cost condition of the hybrid energy storage system to determine a target parameter value of the configuration parameter. By using the control method, optimal configuration cost required for configuring the hybrid energy storage system can be ensured while the hybrid energy storage system is ensured to have a good power output smoothing effect in comprehensive consideration with objective conditions such as energy density, service life and the like of an energy storage device in the hybrid energy storage system, and the purpose of reducing the construction investment cost of a grid system is thus fulfilled.

Description

technical field [0001] The embodiments of the present invention relate to the field of electric power technology, and in particular to a method and device for controlling configuration costs of a hybrid energy storage system. Background technique [0002] With the increasingly serious energy and environmental problems, the issue of energy conservation and emission reduction has received widespread attention. The proportion of clean energy such as wind energy and solar energy in my country's primary energy has gradually increased, and corresponding wind power and photovoltaic power generation have also been vigorously developed in recent years. However, wind power and photovoltaic power generation mainly depend on changing weather conditions, and the output power of their power generation is fluctuating and intermittent. In order to solve the above problems, a certain energy storage system can be configured while building clean energy power generation. Through the configured ...

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Problems solved by technology

However, when configuring the hybrid energy storage system, the traditional configuration method only considers the installed capacity of the energy storage system, simply analyzes the impact of the connection of the energy storage power station on certain aspects of the power grid, and does not specifically consider the energy storage system. The configuration cost of the mixed configuration of the system causes the situation that the investment cost is too high. Therefore, on the premise of ensuring the working efficiency of the hybrid energy storage system, it is also necessary to consider how to better control the configuration cost

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