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Composite energy storage capacity planning method for wind farms considering target decomposition and complementary stabilization

A composite energy storage and target decomposition technology, which is applied in the field of wind farm composite energy storage capacity planning, can solve problems such as unsettled power targets and charging and discharging strategies, and achieve the effect of improving wind power utilization efficiency and reducing the capacity required for energy storage

Active Publication Date: 2016-08-10
SHANDONG UNIV
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Problems solved by technology

However, in this paper, the self-learning neural network is used to explore the relationship between the energy storage characteristic parameters and the stabilization effect, and there is no clear stabilization power target and the construction of the charging and discharging strategy.

Method used

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  • Composite energy storage capacity planning method for wind farms considering target decomposition and complementary stabilization
  • Composite energy storage capacity planning method for wind farms considering target decomposition and complementary stabilization
  • Composite energy storage capacity planning method for wind farms considering target decomposition and complementary stabilization

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Embodiment Construction

[0093] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0094] 1 Decomposition method of expectation stabilization goal

[0095] 1.1 Stabilization target

[0096] In this paper, an adaptive expected output determination method based on the goal of minimizing the variance of power offset is used. Under this goal, the total number k of each stage output and the beginning and end time are determined by itself. This method can achieve the smallest deviation between the actual wind power output and the expected output, which can not only improve the utilization efficiency of wind power, but also help reduce the required capacity of energy storage.

[0097] The wind power P in the selected time section T T (t), when divided into k (k is a positive integer) segment, the objective function is:

[0098] m i n Σ i = ...

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Abstract

The invention discloses a wind power plant composite energy storage capacity planning method based on goal decomposition and complementation and leveling of goal decomposition. The wind power plant composite energy storage capacity planning method based on goal decomposition and complementation and leveling of goal decomposition includes the following steps that firstly, according to medium characteristics of a composite energy storage system, a power target undergoes decomposition and leveling; secondly, a composite system charging and discharging strategy which can exert individual advantages and coordinate and optimize characteristics is built up; finally, a capacity optimizing configuration model where economical operation of the composite energy storage system is the objective function is set up and solving is carried out based on the PSO algorithm. With the wind power plant composite energy storage capacity planning method, equivalent operation cost, the leveling effect, the number of charging and discharging times and the like of the composite energy storage system can be optimized.

Description

technical field [0001] The invention relates to a wind farm compound energy storage capacity planning method considering target decomposition and complementary stabilization. Background technique [0002] At present, as the penetration rate of renewable energy power generation continues to increase, its intermittency and volatility bring increasing regulatory pressure on the current power grid. Energy storage systems have become one of the most important ways to solve the volatility of renewable energy generation due to their ability to coordinate and change the spatio-temporal laws of conventional energy flow transfer. At the same time, due to the high cost of energy storage and high operating costs, currently renewable energy is equipped with an energy storage system with a certain proportion of capacity to stabilize its volatility and smooth the power output of wind farms. main way. [0003] At present, there are many literatures that have carried out related research o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06
Inventor 张峰梁军
Owner SHANDONG UNIV
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