Distributed energy storage stationing operation control method for suppressing voltage fluctuation of power distribution network

Abstract

The invention discloses a distributed energy storage stationing operation control method for suppressing voltage fluctuation of a power distribution network, which is applied to reactive power optimization and voltage control of a high-permeability distributed photovoltaic power distribution network, and comprises the following steps: for a high-permeability distributed photovoltaic target power distribution network, obtaining power grid operation data in a past period of time; calculating a voltage fluctuation coefficient of each node of the distribution network according to the historical operation data; calculating a node voltage power sensitivity index, and analyzing the influence degree of node power change on the node voltage; calculating a node voltage regulation sensitivity index, screening regulation nodes, and forming a distributed energy storage regulation node set; the distributed energy storage voltage regulation and control optimization model is established and the charging and discharging strategy is calculated by taking the minimum total voltage fluctuation of the target power distribution network as the target, so that the problem of voltage quality deterioration of the power distribution network caused by the fluctuation of the output of the high-permeability distributed photovoltaic power distribution network is solved, the power supply quality of the power distribution network is improved, and the operation safety and economy of the power distribution network are effectively improved.

Description

Technical field [0001] The present invention relates to the field of power system distribution scheduling operation, and more particularly to a distributed energy storage range operation control method for suppressing power supply voltages. Background technique [0002] In recent years, renewable energy, especially distributed photovoltaic development, rapid development, distributed renewable energy access to the application of electricity network, making the distribution network have active, active, changed the radiological trend structure of traditional distribution network, The network has a two-way trend feature, and a large amount of effort with volatility distributed energy access can cause deterioration of the voltage quality of the applied electrical network, increased network loss, affecting the safety and economy of distribution network. On the other hand, as the economy is developing rapidly, the demand for people's good life is also growing. It has higher requirements...

AI Technical Summary

Problems solved by technology

However, due to the explosive growth of domestic distributed photovoltaic projects, the deployment and application of distributed energy storage in power systems cannot keep pace with the development of distributed photovoltaics. Site selection and operation control strategies in the distribution network, in order to promote the configuration and application of distributed energy storage in the distribution network, alleviate the contradictions brought about by the demand for large-scale renewable energy construction and the impact of randomness and volatility of renewable energy, Guarantee the quality of distribution network power supply, improve the safety, reliability and economy of distribution network operation

Images