Energy storage control system used for wind electric power regulation and control

Abstract

The invention discloses an energy storage control system used for wind electric power regulation and control. A wind electric field is connected with a high-voltage bus through a first boosting transformer, and an energy storage system is connected with the high-voltage bus through a second boosting transformer. The high-voltage bus is connected with an alternating-current power grid. The energy storage system comprises an energy storage medium, a power converter and the energy storage control system. The energy storage medium is connected with the second boosting transformer through the power converter. The energy storage control system collects wind electric field real-time power, the charged state of the energy storage medium and power grid frequency information and outputs control signals to the power converter. The grid-connected wind electric power characteristics are improved by the energy storage technology, the fluctuation of the wind electric power is inhibited, the frequency change of the power grid is simultaneously responded, and inertia response characteristics of a common set are simulated; in addition, energy storage control system can be flexibly switched to a frequency control mode and participate in primary frequency modulation of the power grid, so that the negative influences of wind power grid connection on the grid frequency are effectively reduced.

Description

technical field [0001] The invention relates to the technical field of energy storage applied to electric power systems, in particular to an energy storage control system for grid-connected wind power regulation and control. Background technique [0002] Energy shortage and environmental degradation are global problems. Developing new energy sources and reducing carbon emissions are the common choices of all countries in the world. Therefore, wind power technology has developed rapidly in recent years. How to be compatible with a large number of new power sources with strong volatility and randomness, and meet users' increasingly high requirements for power quality, has become a new problem encountered in the current grid operation and control. The existing technology system and power Scientific research is facing great challenges. Energy storage technology is considered as one of the most promising technological avenues and has been extensively researched and applied in re...

AI Technical Summary

Problems solved by technology

At present, most of the research on using energy storage to improve wind power characteristics focuses on suppressing wind power fluctuations, but there is still little research on participating in primary frequency regulation of the power grid, especially wind power virtual inertia control.

Images