Microgrid energy optimization method based on power spring

A power spring, energy optimization technology, applied in the field of microgrid, can solve the problem of no description or report found, data not yet collected, etc.

Active Publication Date: 2019-07-23
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

Method used

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  • Microgrid energy optimization method based on power spring
  • Microgrid energy optimization method based on power spring
  • Microgrid energy optimization method based on power spring

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Experimental program
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Effect test

Embodiment

[0076] This embodiment provides a microgrid energy optimization method based on electric springs, including the following steps:

[0077] S1, analyzing the power spring topology and deriving smart load constraints. According to the amount of intelligent load reduction, combined with the general three-order rebound load model, the rebound load constraint (ie, the optimal constraint condition for the stable operation of the electric spring) is established. And on the basis of its stable operation, consider the highly reliable power supply coefficient, microgrid operator regulation coefficient, power spring equipment depreciation and maintenance coefficient, that is, start from its operating efficiency (that is, the optimization goal), and get the power spring optimization part;

[0078] S2, according to factors such as upper and lower limits of energy storage charging and discharging power, energy storage upward climbing speed limit, energy storage downward climbing speed limit,...

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Abstract

The invention provides a microgrid energy optimization method based on a power spring, which comprises the steps of analyzing the topological structure of the power spring to obtain an optimization constraint condition for the stable operation of the power spring, and obtaining a power spring optimization part by taking the operation efficiency of the power spring as an optimization target; according to the operation factors of energy storage, determining the optimization constraint condition for the stable operation of energy storage, and obtaining an energy storage optimization part by taking the charge and discharge times of an energy storage system as an optimization target; considering the upper and lower limits of output of controlled distributed generation and the climbing speed asthe optimization constraint condition for the optimization part of controlled distributed generation, and obtaining a controlled distributed energy optimization part by taking the operation efficiencyof controlled distributed generation as an optimization target; and on the basis of the optimization constraint conditions in the previous three steps, combining the optimization targets in the previous three steps with the additional optimization factors of a microgrid to achieve the power balance of the entire microgrid. The microgrid can work in a stable and efficient operation state.

Description

technical field [0001] The present invention relates to the technical field of micro-grids, in particular to an energy optimization method for micro-grids based on electric springs. Background technique [0002] Renewable energy sources such as wind energy and solar energy are intermittent and unstable. When renewable energy sources such as wind energy and solar energy are connected to the grid on a large scale, their disturbed output will cause a mismatch between power generation and load demand, affecting the normal operation of the system, and may even cause system instability. [0003] In the case of uncontrollable power generation, the matching of power generation and power consumption can only be achieved by adjusting the power consumption at the load demand. A large number of practices have shown that the loads of power systems can be divided into critical loads that are sensitive to voltage fluctuations and non-critical loads that are insensitive to voltage fluctuat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/24
CPCH02J3/382H02J3/00H02J3/24H02J2203/20Y02A30/60
Inventor 汪可友吴济东李国杰江秀臣冯琳韩蓓赵志宇王新刚张垠
Owner SHANGHAI JIAO TONG UNIV
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