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Microgrid system and control method for substation with distributed power supply

A technology of distributed power supply and substation, applied in the field of microgrid, can solve problems such as potential safety hazards

Active Publication Date: 2016-08-24
LIAONING ELECTRIC POWER DEV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are many potential safety hazards in the traditional substation power system

Method used

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  • Microgrid system and control method for substation with distributed power supply
  • Microgrid system and control method for substation with distributed power supply
  • Microgrid system and control method for substation with distributed power supply

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Embodiment Construction

[0031] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, the substation microgrid system containing distributed power sources in the embodiment of the present invention includes the first transformer CT 1 , the second transformer CT 2 , the third transformer CT 3 , the first circuit breaker QF 1 , the second circuit breaker QF 2 , the third circuit breaker QF 3 , the fourth circuit breaker QF 4 , the fifth circuit breaker QF 5 , the sixth circuit breaker QF 6 , Seventh circuit breaker QF 7 , Eighth circuit breaker QF 8 , the ninth circuit breaker QF 9 10th circuit breaker QF 10 , Eleventh circuit breaker QF 11 , The twelfth circuit breaker QF 12 , The thirteenth circuit breaker QF 13 , Fourteenth circuit breaker QF 14 15th circuit breaker QF 15 16th circuit breaker QF 16 17th circuit breaker QF 17 , Eighteenth circuit breaker QF 18 , the nineteenth circuit...

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Abstract

The invention provides a micro grid system for a transformer substation with distributed power supplies and a control method, and belongs to the technical field of micro grids. By means of the control method based on a power electronic technique, a micro grid used for the transformer substation can be intelligently and flexibly controlled, and the plug-and-play function of the micro grid used for the transformer substation can be achieved. When loads change, various distributed power supplies in the micro grid for the transformer substation are coordinately controlled, so that it is guaranteed that the micro grid for the transformer substation meets electricity quality requirements of the loads in different operation modes. When voltage drop, faults, power failure and other situations occur, local information collected by the micro grid is automatically switched to an independent operation state and is uniformly coordinated by the grid. The work state of a storage battery pack is switched and adjusted according to changes of sunlight intensity and the loads, adjusted electricity is directly sent to direct-current or alternating-current loads, and additionally, extra electricity is sent to the storage battery pack. When generated electricity cannot meet requirements of the loads, a controller sends the electricity of storage batteries to the loads, and work continuity and stability of the whole system are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of micro-grids, and in particular relates to a micro-grid system and a control method for substations including distributed power sources. Background technique [0002] With the rapid development of the global economy and science and technology, many countries in the world have focused on photovoltaic power generation, and technological progress in the photovoltaic industry has made solar energy applications possible. At present, my country's photovoltaic power generation application market is in its infancy. In 2010, my country's newly installed photovoltaic power generation capacity was about 500MW, with a total of 800MW. my country's photovoltaic manufacturing industry; the photovoltaic power generation market is currently mainly used for rural electrification in remote areas, communications and industrial applications, and solar photovoltaic products, including solar street lights, lawn lights, solar traf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCY02E10/56
Inventor 全凤岐张海廷赵庆杞李春东殷鹏丛培元张宏宇李海龙黄浩于海俊杜士鹏胡旌伟任知猷
Owner LIAONING ELECTRIC POWER DEV
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