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Large-scale wind power balance assessment method

A large-scale, wind power technology, applied in instruments, data processing applications, forecasting, etc., can solve the problems of high adjustment pressure to accept wind power, lack of enthusiasm for clean energy consumers, and high cost.

Inactive Publication Date: 2016-07-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The mode of wind power development in my country is to build large-scale wind power. At present, eight major wind power bases have been initially formed. However, at present, the difficulty of connecting wind power to the grid is a problem that plagues the industry. From the point of view of power grid operation, the volatility, intermittency and anti-peak regulation characteristics of wind power determine that in the actual power grid in my country that lacks fast start-up and shutdown units, conventional power sources are needed to balance the intermittent fluctuations of wind power, accept the operation of wind power, and adjust the pressure Huge, and due to the cost of start-stop, backup, etc., with the increase of wind power penetration, the cost of conventional power to balance wind power fluctuations is increasing. Due to the lack of effective means and mechanisms at present, the cost of conventional power to balance wind power fluctuations Carry out analysis and calculation to calculate the true value of wind power. Therefore, clean energy consumption parties lack the enthusiasm for consumption. It is necessary to establish technical means to distinguish the value of wind power itself and the value of conventional power sources to balance wind power fluctuations

Method used

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  • Large-scale wind power balance assessment method
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  • Large-scale wind power balance assessment method

Examples

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Embodiment

[0081] Using the improved IEEE node system as a calculation example, the thermal power units at node 26, node 59, node 73, node 77, and node 92 are replaced by wind farms. The operating parameters of the thermal power unit are shown in Table 1, and the raised and lowered reserve prices of the unit are shown in Table 2. The load forecast data of each time period is as follows: image 3 As shown, the prediction accuracy is taken as 98%.

[0082] Table 1 Unit operating parameters

[0083]

[0084]

[0085] Table 2 The price of spare capacity provided by the unit

[0086]

[0087] In this calculation example, five wind power output scenarios are designed to compare the impact of wind power fluctuation and grid-connected capacity on the balance cost, as shown in image 3 As shown, the grid-connected capacity of wind_1, wind_3, and wind_5, and the fluctuations of wind_2 and wind_4 are different.

[0088] In this calculation example, the number of linearization segments of...

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Abstract

The invention relates to a large-scale wind power balance evaluation method, the method comprising: establishing a power grid joint optimal dispatching model; establishing a suitable wind power equivalent alternative scene dispatching model; determining the balance cost of large-scale wind power; analyzing the impact of wind power fluctuation characteristics on wind power balance Laws of cost impact. The technical solution provided by the invention establishes the basis and method for wind power value evaluation, provides basic theories and methods for wind power pricing, and realizes the balance of interests among the purchase, sale and transmission of wind power.

Description

technical field [0001] The invention relates to a method for evaluating the cost of a wind farm, in particular to a method for evaluating large-scale wind power balance. Background technique [0002] There are two different types of wind power generation, namely: off-grid type that operates independently and grid-connected type that is connected to the power system to operate. The scale of off-grid wind power generation is small, and the power supply problem in remote areas can be solved through energy storage devices such as batteries or combined with other energy generation technologies (such as wind power / hydropower complementary systems, wind power-diesel unit combined power supply systems). Grid-connected wind power generation is a large-scale wind farm with a capacity of several megawatts to hundreds of megawatts, consisting of dozens or even hundreds of wind turbines. Grid-connected wind farms can be compensated and supported by large power grids, and more fully expl...

Claims

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Application Information

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IPC IPC(8): G06Q10/00G06Q10/04G06Q50/06
Inventor 郑亚先耿建杨争林薛必克程海花姚建国邵平龙苏岩郭艳敏徐骏王高琴黄春波吕建虎张显汤洪海李道强郭琳
Owner STATE GRID CORP OF CHINA
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