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Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection

An energy storage system and composite energy storage technology, applied in system integration technology, information technology support system, electrical components, etc., to achieve the effect of clear structure, hysteresis control, and optimized output

Inactive Publication Date: 2016-01-20
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0004] Most of the existing micro-grid technologies with wind, diesel and storage are based on the research and application of a single type of energy storage device, and little attention has been paid to the primary system and secondary system of the combined energy storage micro-grid system with wind, diesel and storage

Method used

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  • Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection
  • Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection
  • Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0052] figure 1 It is the topological diagram of a specific embodiment of the wind-solar-diesel-storage microgrid system with composite energy storage in the present invention:

[0053] The solar-diesel-storage microgrid system including composite energy storage in this embodiment is composed of a primary system and a secondary system.

[0054] The microgrid primary system is composed of wind power generation system, photovoltaic power generation system, diesel power generation system, energy storage system, load and microgrid bus 1. The energy storage system is a composite energy storage system, including a lithium battery energy storage system and a flow battery energy storage system.

[0055] The wind power generation system, photovoltaic power generation system, diesel power generation system, lithium battery energy storage system, ...

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Abstract

The invention discloses a wind, light and diesel storage microgrid system containing composite energy storage and a coordinated control method during grid connection. The wind, light and diesel storage microgrid system comprises a primary system and a secondary system. The primary system comprises a wind turbine system, a photovoltaic power generation system, a diesel power generation system, an energy storage system, a load system and a micro grid bus. The energy storage system is a composite energy storage system and comprises more than two kinds of the energy storage systems. The secondary system comprises a control system, a monitoring system and a communication system. The control system is divided into three layers which are an upper layer, a middle layer and a bottom layer. The upper layer is a power distribution network dispatching system, the middle layer is a microgrid central controller and the bottom layer is a bottom layer controller. The wind, light and diesel storage microgrid system containing the composite energy storage comprises more than two kinds of energy storage systems. An application of a composite energy storage apparatus in the microgrid system is considered. The invention comprises the primary system and also comprises a design of the secondary system so that functions of the microgrid system are perfect.

Description

technical field [0001] The invention relates to the technical field of micro-grid control, in particular to a wind-solar-diesel-storage micro-grid system including composite energy storage, and also relates to a coordinated control method for the grid-connected operation of the above-mentioned system. Background technique [0002] With the rapid development of modern industry and the depletion of traditional fossil energy, in order to meet human demand for energy, the development of clean and efficient renewable energy has become a common goal of the world. Distributed power generation is conducive to the local decentralized utilization of new energy and improves the reliability of power supply for users. However, its unstable power generation method also brings many difficulties to the stable operation of the power grid. As an effective way of using distributed power generation to connect to the grid, the microgrid combines power generation systems, energy storage systems a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32H02J13/00
CPCY02B90/20Y02E40/70Y04S10/12Y04S20/12
Inventor 陈晓科曾杰杨萍徐晓刚张弛杨汾艳李鑫李兰芳汪进锋黄嘉健黄杨珏谢宁周少雄王雪莹
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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