Power system interval expansion planning method considering source-load interaction
An interval expansion, power system technology, applied in the field of power system interval expansion planning considering source-load interaction, can solve problems such as reducing the reliability of the power system
Active Publication Date: 2020-11-13
STATE GRID CORP OF CHINA +1
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Problems solved by technology
As the power source of the entire power system, the power generation system will greatly reduce the reliability of the power system if it cannot provide sufficient power and electricity
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[0057] Below in conjunction with accompanying drawing, the present invention is further described:
[0058]The present invention provides a power system interval expansion planning method considering source-load interaction, which is characterized in that: the method specifically includes the following steps:
[0059] S1: Screen typical days. According to the reliability interval evaluation method, typical days are selected from within one year; the typical day is a day, if the system still loses load after optimization, it is considered that this day will affect the reliability of the system If the index contributes, then the day is called a typical day; the key to the power expansion planning that takes reliability constraints into account lies in the calculation of the reliability index. In this paper, the daily scheduling cycle is used to optimize the system output, so the reliability index of the system depends on the daily load loss. In a certain day, if the system does...
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The invention provides a power system interval extension planning method considering source-load interaction. The method comprises the steps: S1, screening typical days; S2, constructing a wind-fire-water power system interval extension planning model; S3, constructing an extension planning deterministic model; S4, solving the deterministic model by adopting genetic algorithm. According to the method, on the basis of an interval optimization model and reliability interval evaluation, the uncertainty of primary energy is considered, and the uncertainty of cost is also considered. Typical days contributing to the reliability indexes are screened out through reliability interval evaluation, economic dispatching is conducted on the planning scheme in the typical days through an interval optimization model, and therefore the interval severity index and the interval total cost of the scheme are calculated. The reliability index and the cost of the planning scheme obtained by utilizing the interval expansion planning model established by interval optimization are interval numbers; compared with the planning scheme obtained by a deterministic planning model, the method is advantageous in that more information can be provided.
Description
technical field [0001] The invention relates to the technical field of power reliability, in particular to a power system section extension planning method considering source-load interaction. Background technique [0002] With the depletion of fossil energy and the deteriorating environmental problems caused by the consumption of fossil energy, countries all over the world are vigorously developing renewable energy, such as hydropower and wind power. In the process of water resource development and utilization, the watershed often contains cascade power stations formed by multiple hydropower stations. The seasonality of cascade hydropower and the coupling between cascades, and the intermittence and volatility of wind power give wind, fire and water to cascade hydropower stations. Supply reliability in power systems presents challenges. The power system can be divided into three subsystems: generation, transmission and distribution. As the power source of the entire power ...
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IPC IPC(8): G06Q10/06G06F30/20G06Q50/06G06F111/04G06F111/06G06F119/02
CPCG06Q10/0637G06Q10/06393G06F30/20G06Q50/06G06F2111/04G06F2111/06G06F2119/02
Inventor 李冶杜金其万俊甘怡红王伟游清清谢一曾庆罗清清陈琛喜苏渝闫盈莹
Owner STATE GRID CORP OF CHINA