Static optimization method of power gathering and output electric capacity of wind power station group

A static optimization technology for wind farm groups, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as low wind power energy density, low transmission efficiency, and over-allocation of transmission capacity

Inactive Publication Date: 2011-08-10
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

The easiest way to choose the transmission capacity of wind power transmission is to consider the total installed capacity of wind power bases. However, due to the low energy density of wind power, the transmission capacity may be over-allocated and the transmission efficiency will be low; if the external transmission capacity is reduced, it may Wind curtailment losses due to transmission blockage at some points in time

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  • Static optimization method of power gathering and output electric capacity of wind power station group
  • Static optimization method of power gathering and output electric capacity of wind power station group
  • Static optimization method of power gathering and output electric capacity of wind power station group

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Embodiment Construction

[0046] The method for statically optimizing the transmission capacity of wind farm group power convergence and external transmission according to the present invention will be further described below using the drawings and embodiments.

[0047] In this embodiment, the transmission capacity optimization design will be carried out for a provincial-level power grid wind farm group with a total installed capacity of 770MW and a 200km transmission line project. The data used is the measured data of the wind farm group. Realized by commercially available product data acquisition device;

[0048] The calculation conditions of the embodiment are described as follows:

[0049] 1) The unit electricity transmission fee K charged by the grid s =0.06 yuan / kWh

[0050] 2) Transmission project cost K per unit capacity and unit length c = 1 million yuan / MW·100km

[0051] 3) Compensation unit price K for wind power curtailment losses caused by grid transmission congestion l =0.6 yuan / kWh ...

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Abstract

The invention provides a static optimization method of power gathering and output electric capacity of a wind power station group, aiming at the problem that the power output electric capacity is not enough and wind power cannot be used for generating electricity by networking of most wind power stations in China. The integral fluctuation characteristic of the output power of a wind power stationgroup is presented by a cumulative annual power output curve of the wind power station, an optimized power transmission capacity objective function optimizing the overall benefit of a power transmission project is established by comprehensively considering factors of power transmission benefit, power transmission construction cost, wind abandoning loss caused by blockage, and the like, and an optimal wind power gathering and output power transmission capability is determined according to the function. The invention provides an effective static evaluation method for the selection of the power output and power transmission capability of kW level wind power bases and can ensure that the comprehensive income of a wind power output and power transmission project reaches the maximization.

Description

technical field [0001] The invention relates to a method for statically optimizing the power transmission capacity of wind farm group power convergence and external transmission. Background technique [0002] Global warming is a huge challenge facing human society. It has become an important political and economic issue that has attracted wide attention from all countries, and has become a hot spot in the game of future interests among countries. Carbon emissions from fossil fuel-based electricity production are an important contributor to global warming. The development of renewable energy is an effective way to improve the energy structure. Wind energy is currently the non-hydroelectric renewable energy with the greatest potential for large-scale development and utilization. The grid-connected operation of wind power generation is an important way to develop wind energy resources on a large scale. [0003] my country is rich in wind energy resources, which are mainly di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 穆钢严干贵崔杨肖白安军李军徽黄亚峰王健
Owner NORTHEAST DIANLI UNIVERSITY
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