Microgrid energy management system and method

Abstract

The invention discloses a microgrid energy management system which comprises an information collection and data preprocessing unit, a network analysis unit and an energy optimization unit, wherein the information collection and data preprocessing unit performs data mining preprocessing on information, collected by SCADA / PMU mixed measurement, by adopting a CIM model and combining historical section management, the network analysis unit is used for realizing mixed measurement-based microgrid state estimation on the basis of network topology analysis, performing risk analysis and assessment and sensitivity analysis to realize early warning and warning for failure threat, and adopting corresponding precautionary measures or performing emergency control, and the energy optimization unit is used for performing microgrid energy optimization scheduling by combining forecast information and system operation analysis according to the information of the microgrid state estimation. The invention also provides a method which adopts the microgrid energy management system to perform microgrid energy management. The functions of the microgrid energy management system are further perfected, and the system safety, the power supply reliability and the system control accuracy and effectiveness of a microgrid are improved.

Description

technical field [0001] The invention relates to a power system, in particular to a microgrid energy management system and method. Background technique [0002] Micro Grid, as a new type of energy network supply and management system, can integrate the advantages of distributed power generation, coordinate distributed power generation units (micro power) and large power grid (referring to power plants, substations, transmission line network , distribution transformers and low-voltage line networks, etc.), make full use of various distributed energy sources, and combine local loads, energy storage devices and related monitoring and protection devices to form a new type of power micro-system. The energy management system of the micro-grid will monitor the operating status of the equipment in the micro-grid, formulate corresponding control strategies according to the current system operating conditions and control objectives, and adopt reasonable energy optimization technology t...

AI Technical Summary

Problems solved by technology

[0005] The micro-grid is characterized by the miniaturization and large number of micro-power sources, which disperses the dispatch risk. However, the power generation of wind power and photovoltaic units in the micro-grid is closely related to conditions such as weather conditions, ambient temperature, wind speed, and sunlight radiation; the failure of power generation equipment The rate also changes with environmental conditions and time, and these random factors will have a certain impact on the security and power supply reliability of the microgrid system.

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