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Dispatching method and dispatching device for optimizing units in wind power station

A technology for optimizing scheduling and wind farms, applied in wind power generation, instruments, data processing applications, etc.

Inactive Publication Date: 2015-07-15
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the wind power dispatching management of the power system is only aimed at the wind farm side or the large wind farm group and the grid connection point of the system, and the optimal dispatching of the wind farm is still in the research stage

Method used

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  • Dispatching method and dispatching device for optimizing units in wind power station
  • Dispatching method and dispatching device for optimizing units in wind power station
  • Dispatching method and dispatching device for optimizing units in wind power station

Examples

Experimental program
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Embodiment

[0137] A wind farm has 33 1500kW variable speed constant frequency double-fed wind turbines with a capacity of 49.5MW. The wind resource data is the wind power forecast data for a certain period of time on March 31, 2010. Wind turbine outlet voltage 0.69kV, reference capacity S B =50MVA, reference voltage U B = 110kV, the line voltage inside the field is 35kV line, and the output voltage of the wind farm is 110kV.

[0138] The layout of the power collection system in the wind farm is a radial layout, with 4 strings of branch circuits, 3 circuits in a string of 8 wind turbines, and a string of 9 wind turbines at the end, with a total of 33 wind turbines.

[0139] like figure 2 As shown, node 16 is a balance node, node 64 is a PV node, and other nodes are all PQ nodes. Since the power collection system of the wind farm is arranged radially, with 33 units in four strings, there are a total of 64 nodes. In the subsequent power flow calculations, only the low-voltage side of ...

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Abstract

The invention discloses a dispatching method and a dispatching device for optimizing units in a wind power station. The dispatching method comprises the steps of: S1, establishing a target function; S2, setting constraint conditions of the target function; and S3, executing optimization algorithms which comprise a particle swarm optimization algorithm and a genetic and particle swarm optimization algorithm. According to the dispatching method and the dispatching device for optimizing the units in the wind power station, by the optimal power flow computation, active power and reactive power outputs of the units in the wind power station are optimized, so that not only can internal loss of the wind power station be minimized, the service life of a wind turbine generator system is prolonged, and the integral wind power station economically operates, but also internal power loss can be analyzed to provide basis for economic evaluation of the wind power station by researching power distribution in the wind power station.

Description

technical field [0001] The invention relates to wind power generation, in particular to a method and a dispatching device for optimal dispatching of units in a wind farm. Background technique [0002] Wind energy is the conversion form of solar energy, and it is a renewable energy source without pollution in nature. With the development of wind power at home and abroad, the installed capacity of wind turbines has gradually increased, and MW-level wind turbines have become mainstream units, and the scale of wind farms has also continued to increase. Large-scale wind farms have a wide area and a large number of units, so problems such as mechanical loss and line loss inside the wind farm will be more obvious. [0003] At present, the wind power dispatching management of the power system is only aimed at the wind farm side or the large wind farm group and the grid connection point of the system, while the optimal dispatching inside the wind farm is still in the research stage....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38G06Q10/04G06Q50/06
CPCY02E10/76Y02E40/70Y04S10/50
Inventor 张晋华程鹏刘雪枫王强曹永梅周晓明曹群士
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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