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Transformer area side power grid flexible operation method based on energy reserve

A technology of energy reserve and operation method, applied in the direction of single-network parallel feeding arrangement, AC network load balancing, etc., to achieve the effect of improving flexibility, reducing operating costs, and high flexibility

Pending Publication Date: 2022-04-12
NARI TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for flexible operation of power grids at the station area based on energy storage, which solves the problem of flexible operation of power systems under large-scale new energy access.

Method used

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  • Transformer area side power grid flexible operation method based on energy reserve
  • Transformer area side power grid flexible operation method based on energy reserve
  • Transformer area side power grid flexible operation method based on energy reserve

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Embodiment Construction

[0072] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0073] A method for flexible operation of power grids based on energy storage described in the present invention,

[0074] The objective function is established with the goal of minimizing the output cost, and the output is only used to support the power demand of the system:

[0075]

[0076] where: b i is the incremental cost of power source i; g i (k) Contribute to the plan of power supply i at time k; I g is a collection of generators in the system;

[0077] By establishing constraint conditions and optimizing the objective function to obtain optimized parameters, the constraint conditions include: power balance ...

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Abstract

The invention belongs to the field of power grid optimization operation, and particularly relates to a transformer area side power grid flexible operation method based on energy reserve, an objective function is established with the goal of achieving the minimum output cost, and the output is only used for supporting the system electric energy demand: bi is the increment cost of a power supply i; gi (k) is the planned output of the power supply i at the moment k; ig is a set formed by generators in the system; according to the method, a constraint condition is established, and an objective function is optimized, so that optimized parameters can be obtained, the constraint conditions comprise a power balance constraint, a generator output constraint, an operation constraint of energy storage equipment, a generator energy reserve constraint based on electric quantity, an energy demand constraint based on electric energy, an energy reserve constraint of the energy storage equipment and an energy reserve management constraint; the problem of operation flexibility improvement of a power system under large-scale new energy access is solved.

Description

technical field [0001] The invention belongs to the field of optimal operation of power grids, and in particular relates to a method for flexible operation of power grids at the station side based on energy reserves. Background technique [0002] Electricity is an important secondary energy source and a basic guarantee for social development and people's lives. Over the years, my country's electricity production has mainly relied on fossil energy such as coal. However, as a non-renewable energy source, fossil energy is facing serious challenges worldwide. At the same time, the carbon dioxide emitted by the combustion of fossil energy has also caused a certain degree of impact on the global climate. [0003] With the gradual depletion of fossil energy and the growing problem of global greenhouse gas emissions, all countries have set carbon emission targets. Due to the random fluctuation of the spatio-temporal distribution of new energy such as wind and solar, the connection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/48H02J3/32
Inventor 陶晓峰吕朋朋吴少雄戚梦逸李远航刘涅煊刘淇张群星陆宇洋
Owner NARI TECH CO LTD
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