Energy management system of independent micro-grid

Abstract

The invention relates to an energy management system of an independent micro-grid. The system comprises a diesel generator, a new renewable energy generator and a power conversion portion, the power conversion portion is connected to the diesel generator through an AC bus and connected to the new renewable energy generator through a DC bus or the AC bus, and the power conversion portion can perform bidirectional conversion, converts DC power to AC power or converts AC power to DC power, monitor the generating power amount of each generator and a load and a required load amount and a charging amount, and control the driving of the diesel generator. According to the energy management system of the independent micro-grid, all comprehensive conditions including the generating condition of thenew renewable energy, the state of the charging amount of a storage battery, the system load amount, and variation estimates of the load amount and the generating amount can be determined, the systemis correspondingly controlled according to the conditions, the independent micro-grid can realize effective and stable operation, the operation time of the diesel generator is reduced, environmental protection is achieved, and the cost of diesel fuels is reduced.

Description

technical field [0001] The present invention relates to an energy management system for an independent microgrid. Specifically, it judges all comprehensive conditions including the power generation status of new renewable energy, the state of battery charge, system load, and estimated changes in load and power generation. The energy management system of the independent micro-grid that controls the system accordingly, makes the independent micro-grid operate effectively and stably, reduces the running time of the diesel generator to achieve environmental protection, and saves the cost of diesel fuel. Background technique [0002] Microgrid is a new form of distribution network that can be comprehensively controlled and operated under the premise that the distributed power generation system using new renewable energy can fully bear the load of a certain area of ​​the distribution system. [0003] On the distribution network of the micro-grid, even if a problem occurs on the ma...

AI Technical Summary

Problems solved by technology

[0009] However, the existing micro-grid technology is prone to problems such as operation errors or excessive calculations as the load or the output power of distributed power sources changes.

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