Operating regulation computing method for active power distribution network participated by energy storage system

Abstract

The invention provides an operating regulation computing method for an active power distribution network participated by an energy storage system. For the energy storage system which is formed by a storage battery, the minimum active loss of the power distribution network system is taken as the target function; the operating constraints which comprise system power flow constraint, operating voltage constraint, branch circuit constraint and energy storage system operating constraint, of the system are taken into consideration; the computational example is solved by a particle swarm optimization; and finally, the charging-discharging power of the energy storage system under each time frame is output to be used as the optimal solution under the premise that the reliability of the system is satisfied. Compared with the conventional method, the active power loss of the power distribution network system can be effectively reduced; the operating cost of the power grid can be lowered; and the utilization efficiency of the photovoltaic energy can be increased.

Description

technical field [0001] The invention relates to a technology for regulating the operation of an energy storage system participating in an active distribution network, in particular to a calculation method for regulating the operation of a battery energy storage system participating in an active distribution network. Background technique [0002] Affected by the dual pressures of energy and the environment, distributed power generation technologies centered on the utilization of renewable energy are widely emerging around the world, which greatly promotes the application and development of energy storage technology in power systems. On the one hand, the energy storage system can effectively reduce the impact of distributed power output intermittency and randomness, and form an independent autonomous system with microgrid as the core; on the other hand, the large-capacity energy storage system also gives The operation regulation of distribution network provides new means and m...

AI Technical Summary

Problems solved by technology

[0004] Different from distributed power sources, the operation of energy storage systems has obvious timing characteristics, and its operation optimization is no longer limited to a single time section, but extends to a longer time scale. There is a timing operation optimization problem, which leads to its decision-making The variable dimension increases rapidly with the increase of the number of time sections

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