Composite power grid operation risk scene construction method, system, equipment and medium

A technology for power grid operation and operation scenarios, which is applied in the field of grid operation risk scenario construction, can solve problems such as insufficient perfection, inability to provide, and sharply increased difficulty in grid operation risk assessment, and achieves the effect of promoting adaptability and friendliness

Pending Publication Date: 2022-05-17
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the intermittence, volatility, and randomness of new energy output such as wind power, coupled with the randomness of the existing load power in the power system, it will lead to complex and diverse operating conditions of the power system, and will also lead to risks in the operation of the power system. The significant increase has brought new challenges to the safe and stable operation of the power system, making the risk assessment of power grid operation more difficult and the workload is huge
[0003] At present, the existing technologies often focus on risk assessment or scenario clustering, and there are few descriptions on the construction methods of high-risk operation scenarios in which a high proportion of new energy is connected to the grid; in addition, the existing technologies are not perfect in scenario clustering. The proportion of energy access to the power grid is increasing, but the existing technology does not reflect the characteristics of high penetration of new energy in the high-proportion new energy power system, and cannot provide an optimal power dispatching scheme for uncertainty under the high-proportion new energy power system

Method used

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  • Composite power grid operation risk scene construction method, system, equipment and medium
  • Composite power grid operation risk scene construction method, system, equipment and medium
  • Composite power grid operation risk scene construction method, system, equipment and medium

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Embodiment 1

[0055] New energy power generation (for example, new energy power generation represented by wind and solar power, etc.) has the characteristics of intermittent, fluctuating, and random, and its large-scale grid connection will make it difficult to balance grid power in real time, resulting in grid node voltage fluctuations and The power fluctuation of the tie line increases the risk of safe operation of the power grid. Both new energy power generation and electric load have random characteristics, and there are countless possible combinations of operation modes for the two; if analysis and clustering are not based on different risk levels, it will make the risk assessment of power grid operation very difficult and the analysis results are not universal. Therefore, it is urgent to construct typical scenarios that can cover a variety of operating conditions according to the risk level of grid operation, which is suitable for grid operation risk assessment under the condition of h...

Embodiment 2

[0075] In the specific embodiment of the present invention, based on the annual wind power output data and load data of a certain area in Jiangsu Province, a cluster analysis of typical wind power output scenarios and load scenarios is proposed, and typical scenarios are generated and analyzed; the data sampling interval is 15 minutes, and sampling is performed every day 96 points. The wind power penetration rate is obtained by dividing the wind power output corresponding to the 96 points sampled every day by the total output of the area at the current moment. Taking the wind power penetration rate as an indicator, cluster analysis is carried out on the typical historical wind power scenarios, and five typical daily scenarios of relative wind power output are obtained, and the probability of occurrence of the scenarios is calculated. A typical scenario for extracting loads in the same way. According to the annual data in the same area, the optimal number of clusters can be ob...

Embodiment 3

[0133] The following are device embodiments of the present invention, which can be used to implement the method embodiments of the present invention. For details not omitted in the device embodiment, please refer to the method embodiment of the present invention.

[0134] A complex power grid operation risk scenario construction system provided by an embodiment of the present invention includes:

[0135] The typical wind power scene and typical load scene acquisition module is used to obtain the composite power grid output sample data based on sampling, clustering the new energy penetration rate as the clustering object to obtain the typical wind power scene, and using the load data as the clustering object to obtain the clustering Typical load scenario; wherein, the new energy penetration rate is the ratio of the new energy output to the total output of the composite power grid;

[0136] A system operation scenario acquisition module, configured to pair the typical wind powe...

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Abstract

The invention discloses a composite power grid operation risk scene construction method, system and device and a medium, and the method comprises the following steps: carrying out the clustering based on the output sample data, obtained through sampling, of a composite power grid with the new energy permeability as a clustering object, and obtaining a typical wind power scene, clustering by taking the load data as a clustering object to obtain a typical load scene; performing pairing based on the typical wind power scene and the typical load scene, and constructing and obtaining a system operation scene; wherein the system operation scene is a source load matching scene in which a typical wind power scene and a typical load scene are combined in pairs; and combining the system operation scene with a predetermined system risk index to construct and obtain a composite power grid operation risk scene. According to the invention, a composite power grid operation risk scene can be obtained, and a verification environment can be provided for reasonable distribution of traditional unit output and new energy unit output.

Description

technical field [0001] The invention belongs to the technical field of power grid operation risk scenario construction, relates to the field of power grid operation risk assessment, and particularly relates to a composite power grid operation risk scenario construction method, system, equipment and medium. Background technique [0002] In the context of "carbon neutrality and carbon peaking" at the current stage, a large-scale and high proportion of new energy connected to the grid will help alleviate the current situation of fossil energy shortage and resource shortage. However, due to the intermittence, volatility, and randomness of new energy output such as wind power, coupled with the randomness of the existing load power in the power system, it will lead to complex and diverse operating conditions of the power system, and will also lead to risks in the operation of the power system. The significant increase has brought new challenges to the safe and stable operation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06K9/62
CPCG06Q10/0635G06Q10/06393G06Q50/06G06F18/23Y02P90/82
Inventor 吕闫李理於益军孙博石上丘孙略马晓忱刘建周建华陈舒郎燕生罗雅迪李劲松王伟张印韩巍王淼王少芳韩峰李森宋旭日陶蕾黄运豪刘升门德月
Owner CHINA ELECTRIC POWER RES INST
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