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Ultra-large capacity regional micro-grid system and operation method thereof

A technology of micro-grid and capacity, applied in the field of micro-grid, can solve problems such as the operation system and operation method of the regional micro-grid system without ultra-large capacity scale

Pending Publication Date: 2021-08-20
天宏阳光新能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few designs for ultra-large-capacity regional micro-grid systems in the prior art, and there is no corresponding operation system and operation method for ultra-large-capacity regional micro-grid systems

Method used

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  • Ultra-large capacity regional micro-grid system and operation method thereof
  • Ultra-large capacity regional micro-grid system and operation method thereof
  • Ultra-large capacity regional micro-grid system and operation method thereof

Examples

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Effect test

Embodiment 1

[0034] An embodiment of the present invention is an ultra-large-capacity regional micro-grid system, including a wind power station, a photovoltaic power station, an energy storage system, loads, power transformation and distribution equipment, and a micro-grid energy management system.

[0035] The wind power station is composed of multiple large-capacity wind turbines and a 35KV box-type substation using the unit wiring method of "one box, one transformer". The 110KV power transformation and distribution equipment is boosted and integrated into the grid; the wind power station is used to supply power to the loads in the micro-grid and at the same time charge the energy storage system. When the energy storage system is full, the excess power is sent to the main grid.

[0036] The photovoltaic power station consists of a plurality of photovoltaic modules and a set of photovoltaic inverters to form a photovoltaic power generation unit. The two photovoltaic power generation units...

Embodiment 2

[0055] On the basis of the foregoing embodiments, the present invention further presents a super-large-capacity regional microgrid system, such as figure 1 As shown, it includes wind power stations, photovoltaic power stations, energy storage systems, loads, power transformation and distribution equipment, and microgrid energy management systems.

[0056] The wind power station consists of 88 wind turbines with a unit capacity of 3200 / 4000KW and an outlet voltage of 690V (not limited, but can be optimized) and a 35KV box-type substation using the unit wiring method of "one box, one transformer". After the substation is boosted, it is connected to the 35KV collector line in the field, and then connected to the power grid through the 110KV wind power substation; When the energy system is fully charged, the excess power is sent to the main grid.

[0057]The photovoltaic power station consists of 2000kWp photovoltaic module confluence equipment and a set of 2000KW photovoltaic in...

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Abstract

The invention discloses an ultra-large-capacity regional micro-grid system and an operation method thereof. The regional micro-grid system comprises a wind power station, a photovoltaic power station, an energy storage system, a load, power transformation and distribution equipment and a micro-grid energy management system. The wind power station and the photovoltaic power station serve as main power sources of the micro-grid and are used for supplying power to loads in the micro-grid and charging the energy storage system at the same time. The energy storage system is configured on a wind power station side, a photovoltaic power station side and a 110 KV micro-grid user station side, and can be used for stabilizing power output, shifting peaks and filling valleys, adjusting power balance and meeting partial power exchange requirements; the loads are subjected to level-to-level management according to the non-interruptible degree; and the micro-grid energy management system is used for realizing integrated management of production scheduling, coordination control, operation and maintenance management and comprehensive display. The invention aims to explore the innovative utilization mode and development mode of renewable energy sources, improve the utilization ratio of the renewable energy sources and promote the nearby consumption of new energy power.

Description

technical field [0001] The invention relates to the technical field of micro-grids, in particular to an ultra-large-capacity regional micro-grid system and an operation method. Background technique [0002] Microgrid is a new type of power network structure, which is a microgrid unit composed of a group of power sources, loads, energy storage systems and control devices. The microgrid integrates advanced information technology, control technology and power electronics technology. While providing reliable power supply and meeting the various needs of users, it can also ensure the maximization of energy, economic and environmental benefits. At the same time, the microgrid can provide grid support, improve energy efficiency, save energy and reduce consumption in the conventional grid. Microgrid will be an indispensable and important part in the construction of smart grid. In my country, the vigorous promotion of micro-grid technology is a concrete manifestation of the road of...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32H02J3/00H02J13/00
CPCH02J3/32H02J3/381H02J3/004H02J13/00002H02J2203/20H02J2300/24H02J2300/28Y02B70/30Y02E10/56Y02E10/76Y02E40/10Y02E40/70Y02E60/00Y02E70/30Y04S10/123Y04S10/14Y04S10/16Y04S20/242
Inventor 黄小红朱杰丁清王玉柱黄智尚郭天鸣
Owner 天宏阳光新能源股份有限公司
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