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Reserve clearing method based on wind power multi-state model and opportunity cost correction

An opportunity cost, multi-state technology, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as difficult to predict accurately, fluctuation of wind power output, power price changes, etc., to achieve both reliability and economy, and guarantee the system The effect of power balance

Active Publication Date: 2021-01-22
STATE GRID ZHEJIANG ELECTRIC POWER +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the output of wind power is fluctuating and difficult to predict accurately, which brings challenges to the operation of the power system
On the one hand, the large-scale integration of wind power requires the system to deploy more backups to ensure the power balance of the system; on the other hand, the integration of wind power will also lead to changes in electricity prices, thereby affecting the opportunity cost of other generating units to provide backup

Method used

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  • Reserve clearing method based on wind power multi-state model and opportunity cost correction
  • Reserve clearing method based on wind power multi-state model and opportunity cost correction
  • Reserve clearing method based on wind power multi-state model and opportunity cost correction

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Embodiment Construction

[0049] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] Such as figure 1 As shown, the backup clearing method based on the wind power multi-state model and opportunity cost correction includes the following steps:

[0051] S1: Obtain wind speed forecast data;

[0052] S2: According to the wind speed prediction data, establish a wind power multi-state model;

[0053] S201: According to the wind speed prediction error distribution, the wind speed is modeled as a 6-state model:

[0054] V w (k)=μ+(k-3)×(5σ / 3), k=1,...,6

[0055] Among them, V w is the wind speed, k represents different states, μ is the mean value of the wind speed prediction, and σ is the variance of the wind speed prediction;

[0056] S202: Obtain the multi-state model of wind power output power according to the wind speed:

[0057] The output power of wind power in each state is calculated according to the fo...

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Abstract

The invention discloses a standby clearing method based on a wind power multi-state model and opportunity cost correction, and relates to the technical field of operation and control of power systems.At present, the output of wind power has the problem of volatility and difficulty in accurately predicting. The method comprises the following steps of establishing a wind power multi-state model according to the wind speed prediction data; solving the optimal power flow model according to the wind power multi-state model and constraint conditions in each state; calculating a weighted average value of the node prices in different states to obtain a final node price, and obtaining an optimal scheduling result; acquiring standby quotations of generator sets, and obtaining standby sorting pricesof each generator set; and sorting the standby of each set according to the order of the prices from low to high to obtain a standby clearing price. The method takes into account the reliability andeconomy of the power system, considers the impact of wind power volatility and uncertainty on the opportunity cost of spare resources, and reduces the impact of wind power access on the opportunity cost of providing alternatives to other generator sets.

Description

technical field [0001] The invention relates to the technical field of power system operation and control, in particular to a backup clearing method. Background technique [0002] At present, wind power, as a clean and low-carbon power generation method, has been widely used in the power system. However, the output of wind power is volatile and difficult to predict accurately, which brings challenges to the operation of the power system. On the one hand, the large-scale integration of wind power requires the system to deploy more backups to ensure the power balance of the system; on the other hand, the integration of wind power will also lead to changes in electricity prices, thereby affecting the opportunity cost of other generating units to provide backup. Therefore, it is necessary to consider the impact of wind power volatility and uncertainty on the opportunity cost of reserve resources when clearing reserves. Contents of the invention [0003] The technical problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/46H02J3/06G06Q10/04G06Q30/02G06Q50/06
CPCY02E10/76Y02E40/70Y04S10/50Y04S50/14Y02A30/00
Inventor 周华丁一邵常政项中明吴华华陆春良吴一峰张俊
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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