A capacity optimization configuration method for energy storage participating in power grid peak regulation application

Abstract

The invention discloses a capacity optimization configuration method for energy storage to participate in power grid peak regulation applications, which belongs to the field of intelligent power distribution technology. The invention collects power grid state information parameters (including load data P load (t), new energy power grid-connected power P new , power grid tie line P ace ), based on the grid state and data to obtain the net load peak-to-valley difference rate, determine the power configuration method and criteria of the energy storage, and based on the peak-shaving time window of the grid, determine the capacity of the energy storage to participate in the peak-shaving application of the grid, Specifically, the configuration of energy storage power and capacity can be determined by using the calculation method or precise mathematical calculation method according to the grid data and status, and in the actual grid application, the battery energy storage system can be used to charge and discharge through the grid-connected energy storage inverter to independently produce power Or absorb the energy of the power grid to realize the peak regulation function of energy storage, improve the power quality and the stability of the power grid, and fully exert and improve the utilization rate of equipment under the operating conditions of peak shaving and valley filling.

Description

technical field [0001] The invention belongs to the technical field of intelligent power distribution, and in particular relates to a capacity optimization configuration method for energy storage to participate in power grid peak regulation applications. Background technique [0002] With the development of society, electric energy has become an indispensable secondary energy in people's production and life. In fact, by the end of 2015, 1.4 billion people across the country had full access to electricity, and our country has achieved universal access to electricity. As of the end of 2018, when the world's power generation growth rate was only 3.7%, China led the world with a rapid growth rate of 8.4%. More than 1 / 4 of the charge. Electricity has become an important symbol of economic development in China and even in the world, and with the development of technology, in the upsurge of "electric energy substitution", the impact of electric energy on people's daily life is in...

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Problems solved by technology

[0005] Aiming at the problem of safety and stability of the power grid caused by insufficient active-reactive power reserve in the prior art, or the technical problem of waste caused by idle equipment, the purpose of the present invention is to provide a capacity for energy storage to participate in power grid peak regulation applications Optimal configuration method, through the real-time status of the power grid (including daily load, clean energy power generation, tie-line power), combined with the analysis of the peak-shaving capacity of the power grid, to analyze and configure the energy storage demand, the purpose is to use energy storage to improve and adjust the peak and valley of the power grid Reduce the pressure caused by the load peak-valley difference on the safe and stable operation of the power grid, improve the ability of the power grid to accept new energy, and improve the utilization rate of power grid equipment

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