Energy management system for energy-storage-combined thermal power frequency modulation

Abstract

The invention discloses an energy management system for energy-storage-combined thermal power frequency modulation. The energy management system comprises an energy management system and a data acquisition and monitoring system. The energy management system is composed of a hardware platform, an operating system platform, a universal middleware layer, a unified support platform layer and an application software layer. The data acquisition and monitoring system includes an operator control layer, a control layer and an in-place layer. Data acquisition and processing, energy distribution of an energy storage system, maintenance and management of an energy storage battery and man-machine interaction are realized in energy-storage-combined thermal power frequency modulation; a plurality of PCSs are controlled coordinately; the fast frequency modulation function is realized; a frequency modulation control device receives an external power instruction and a set instruction, calculates a total energy storage power instruction, and controls the overall output of the energy storage system so as to ensure the real-time performance and accuracy of the overall output power; and an energy storage coordination control device can carry out power distribution according to the SOC state of each battery pack and the battery maintenance condition, so that the performance state of each battery pack is balanced.

Description

technical field [0001] The invention relates to an energy management system, in particular to an energy management system combined with energy storage for thermal power frequency regulation, and belongs to the technical field of energy management. Background technique [0002] For the power grid, energy supply and demand imbalance and system emergencies are inherent characteristics of power system operation. In the traditional energy structure, the short-term energy imbalance of the power grid is regulated by traditional units (mainly thermal power and hydropower in my country) by responding to AGC signals. With the integration of new energy into the grid, the volatility and randomness of the wind and the wind have aggravated the energy imbalance in the power grid in a short period of time. Traditional energy (especially thermal power) has a lag in response to signals due to slow frequency modulation, so it cannot meet the requirements. Added requirements. [0003] Energy ...

AI Technical Summary

Problems solved by technology

However, the self-control of the battery energy storage system and the linkage coordination with the thermal power unit have not been clearly defined, resulting in the lack of functions or redundancy, reduced reliability, reduced efficiency, and reduced frequency modulation performance of the energy storage system in actual operation.

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