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Risk-considering power grid optimization planning method

A technology for optimizing planning and power grids, which is applied in calculation, calculation models, forecasting, etc., can solve the problem that the uncertainty factors of the planning model are not comprehensive enough, and achieve the effect of taking into account safety and economy, improving search ability, and strong feasibility

Active Publication Date: 2020-12-04
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

In the existing research, the theory and method of power grid optimization planning have become mature, but the uncertainty factors considered in the planning model are not comprehensive enough, and the multi-subjects such as source, grid, load, and storage and their interaction effects are not considered at the same time. planning, and there are few studies that reflect the impact of uncertain factors on planning economy from the perspective of planning risk

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Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] In the power system, the development of multiple subjects such as power supply, grid, load, and energy storage is uncertain, which makes the system face multiple risks. In order to improve the ability of the grid to resist risk accidents from the planning and design source, this embodiment proposes A two-level planning model of the power grid that takes into account risks is proposed to promote the consumption of new energy from the source of planning and design, reduce the adverse effects caused by uncertain factors, and improve the adaptability of the power grid planning scheme under the new development situation.

[0037] In this example, probabilistic modeling of wind power, photovoltaic output, and load is carried out to describe their random fluctuations, and a charging and discharging strategy for energy storage is proposed; secondly, with...

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Abstract

The invention relates to a power grid optimization technology, in particular to a risk-considering power grid optimization planning method, which comprises the following steps of: respectively carrying out probability modeling on wind power, photovoltaic output and load to describe the random volatility of the wind power, the photovoltaic output and the load, and proposing charging and dischargingstrategies of energy storage; secondly, taking load reduction minimization as a target, and performing power flow calculation on the power system according to a probability optimal power flow methodbased on Latin hypercube sampling; and finally, analyzing the whole life cycle cost of the planning project, further constructing a power grid two-layer planning model based on an improved whale optimization algorithm, quantifying the risk into risk loss cost, and counting the risk loss cost into a target function. Risk-considering power grid optimization planning is carried out, so that the adaptability of a grid frame planning scheme under a new situation is improved, and the safety risk brought to system operation by uncertain factors is reduced from the source.

Description

technical field [0001] The invention belongs to the technical field of power grid optimization, and in particular relates to a risk-considered grid optimization planning method. Background technique [0002] At present, due to the promotion of environmental protection, energy demand, and macro policies, the penetration rate of new energy continues to increase. The cross-regional interconnection of the power grid complicates the grid structure, and the controllable resources such as flexible loads and energy storage continue to develop. Deterministic factors bring multiple risks to the power system. As the core link of the power system, whether the grid structure can resist the risks brought by uncertain factors is the key to determining whether the system can maintain safe and reliable operation. In the existing research, the theory and method of power grid optimization planning have become mature, but the uncertainty factors considered in the planning model are not compreh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06N3/00
CPCG06Q10/04G06Q10/0635G06Q10/06393G06Q10/06315G06Q50/06G06N3/006Y04S10/50
Inventor 田鑫张栋梁吴军甘佩莹鉴庆之李文升赵龙郑志杰王艳孙东磊杨斌魏佳张家宁薄其滨王轶群
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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