Abstract
This paper summarizes the advantages of application of micro grid, analyzes the structure of microgrid, and discusses the factors, which are important to the stable operation of micro grid. The factors include the technology of power matching, harmonic suppression and the stability of electronic cascaded systems etc.
Highlights
With the progress of human society, electric power has been the symbol of modern civilization
This paper summarizes the advantages of application of micro grid, analyzes the structure of microgrid, and discusses the factors, which are important to the stable operation of micro grid
The definition of microgrid given by CERTS is: Microgrid is composed of loads and micro power generations, it can simultaneously provides electricity and heat; power electronic devices are responsible for the conversion of energy and the necessary control; microgrid is regarded as a controlled unit for utility grid, and meet the requirements of power supply reliability and power quality at the same time
Summary
With the progress of human society, electric power has been the symbol of modern civilization. Facing pressures from traditional resource depletion and environmental pollution, power generation methods based on fossil fuel and the centralized power supply mode have been difficult to meet the requirements of economic and social development [1]. With the development of power electronic technology and modern control theory, microgrid, which integrates distributed generations, energy storage device, loads and control modules, is considered progressive to meet the growing power demand [2]. The definition of microgrid given by CERTS (the Consortium for Electric Reliability Technology Solutions) is: Microgrid is composed of loads and micro power generations, it can simultaneously provides electricity and heat; power electronic devices are responsible for the conversion of energy and the necessary control; microgrid is regarded as a controlled unit for utility grid, and meet the requirements of power supply reliability and power quality at the same time. Operation control and energy management technologies based on correct theoretical basis are important to achieve optimal and stable operation of microgrid
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