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Power system source network load storage intrinsic safety risk assessment method

A technology of power system and intrinsic safety, which is applied in the field of intrinsic safety risk assessment of power system source, network, load and storage, and achieves the effect of overall comprehensive evaluation results, accurate and reliable evaluation results, and high precision.

Pending Publication Date: 2020-11-17
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the current research on power system risk assessment mainly focuses on static and transient security risks at the economic level of large-scale power systems in the power market environment.

Method used

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  • Power system source network load storage intrinsic safety risk assessment method
  • Power system source network load storage intrinsic safety risk assessment method
  • Power system source network load storage intrinsic safety risk assessment method

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Embodiment Construction

[0028] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Under the background that the development of source, network, load, and storage brings a series of risks to the power system, and considering the threat to the safe and stable operation of the power system, this embodiment proposes a risk assessment method for the intrinsic safety of the source, network, load, and storage of the power system. This method firstly conducts probability modeling for wind power, photovoltaic output and load respectively to describe their random fluctuations, and proposes charging and discharging strategies for energy storage; secondly, adopts the probabilistic power flow method based on Latin hypercube sampling to carry out power flow analysis on the power system. Calculation; finally, establish safety and economic risk indicators, use subjective fixed weight method to establish system risk calculation method, and eva...

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Abstract

The invention relates to a power system safety technology, in particular to a power system source network load storage intrinsic safety risk assessment method, which comprises the following steps of:firstly, respectively carrying out probability modeling on wind power, photovoltaic output and load to describe random volatility of the wind power, the photovoltaic output and the load, and proposingcharging and discharging strategies of energy storage; secondly, carrying out load flow calculation on a power system by adopting a probabilistic load flow method based on Latin hypercube sampling; and finally, establishing safety and economy risk indexes, determining a system risk calculation method by adopting a subjective weight determination method, and evaluating the intrinsic safety level of the source network load storage of the power system. Influences of changes of sources, loads and reservoirs on risks are discussed in different scenes, the intrinsic safety risk of the sources, grids, loads and reservoirs of the power system can be scientifically and systematically evaluated, decision reference is provided for risk management and control of a power department, and the intrinsicsafety level of the power system can be improved.

Description

technical field [0001] The invention belongs to the technical field of power system security, and in particular relates to a method for assessing intrinsic safety risks of power system source network load storage. Background technique [0002] Grid security is related to national energy security. With the increasing level of electrification, users' requirements for power supply reliability are gradually increasing. However, the penetration rate of renewable energy in the power system is increasing day by day, the energy supply side is multi-subjected, and flexible thermal power resources are used to stabilize the volatility of new energy; The topology structure is complicated; flexible loads participate in demand-side response, and the load side actively tracks power generation output; energy storage technology is booming, and a large amount of energy storage is connected to the grid, and its charging and discharging are random. The source side, grid side, load side, and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F30/20G06F111/08
CPCG06Q10/0635G06Q10/06393G06Q50/06G06F30/20G06F2111/08
Inventor 刘俊旭孙春晖吴军甘佩莹高月龙辛向君林晓兵魏天学姜代鹏韩孟良
Owner STATE GRID CORP OF CHINA
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