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Wind and light storage power generation system coordination control method

A power generation system and coordinated control technology, applied in the direction of wind power generation, photovoltaic power generation, power network operating system integration, etc., can solve the problems of no multi-source coordinated control method, regardless of wind power or photovoltaic power generation adjustment, etc., to improve load tracking ability , reduce the depth of charging and discharging of energy storage, and prevent the effect of overcharging and overdischarging of energy storage

Pending Publication Date: 2021-10-26
NANJING INST OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, at present, domestic and foreign researches on coordinated control methods of energy storage systems and renewable energy such as wind power mainly focus on controlling the charging and discharging process of energy storage to smooth the output power of wind and light, and generally do not consider the adjustment of wind power or photovoltaic power generation.
At present, there is no effective multi-source coordinated control method for wind, solar and storage to control the output power of the wind-solar-storage combined power generation system to follow the load curve

Method used

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  • Wind and light storage power generation system coordination control method
  • Wind and light storage power generation system coordination control method
  • Wind and light storage power generation system coordination control method

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Embodiment Construction

[0088] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0089] Such as figure 1 As shown, the technical solution adopted in the present invention is a coordinated control method for a wind-solar-storage power generation system that takes into account load and wind-solar fluctuations, including the following steps:

[0090] Step 1: There are many electric load forecasting methods, including load density method, exponential smoothing method, trend analysis method, gray simulation method, etc., the present invention preferably adopts such as figure 2 The shown multi-dimensional dense network algorithm predicts the short-term load, the specific content is:

[0091] (1) For the active power P of electric load and its influencing factors ξ 1 , ξ 2 ,…,ξ n Sampling at equal intervals, n∈[1, 1000], the sampling interval is τ, τ∈[0.1, 100] minutes, the sampling time is t, t-τ, t-2×τ, ..., t-(m-1 )×τ, m∈[...

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Abstract

The invention discloses a wind and light storage power generation system coordination control method considering load and wind and light volatility, which comprises the following steps of: predicting the load by using a multi-dimensional dense network algorithm to obtain a predicted load curve; establishing a prediction model of the wind and light storage power generation system, considering the volatility of a wind power and photovoltaic power generation system and the charge state of energy storage, constructing a coordinated optimization model of the wind and light storage power generation system, and solving the optimal number combination of photovoltaic units and fans at each moment, so that the wind and light storage power generation system can effectively track and predict a load curve. According to the coordination control method, the energy storage charge and discharge depth can be reduced, energy storage overcharge and overdischarge are prevented, meanwhile, the fluctuation of wind power and photovoltaic output power is reduced, the load tracking capacity of the combined power generation system is improved, and the method has a feasible practical value and a wide application prospect.

Description

technical field [0001] The invention belongs to the field of electric energy storage, and in particular relates to a coordinated control method for a wind-solar-storage power generation system that takes load and wind-solar fluctuations into consideration. Background technique [0002] In recent years, renewable clean energy power generation technologies represented by wind energy and solar energy have developed rapidly around the world. Due to the intermittency, randomness and volatility of wind energy and light energy, it is difficult for wind and light independent operation systems to provide continuous and stable energy output. Make full use of the natural complementarity of wind energy and light energy in terms of time and region, and at the same time cooperate with the energy storage system to store and release electric energy, improve the power output characteristics of the entire wind and light power generation system, and alleviate the intermittence and fluctuation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/28H02J3/32H02J3/14
CPCH02J3/003H02J3/004H02J3/381H02J3/466H02J3/28H02J3/32H02J3/144H02J2203/20H02J2300/24H02J2300/28H02J2300/40Y02E10/56Y02E10/76Y02E70/30Y02B70/3225Y04S20/222
Inventor 卢杨孟高军孙玉坤谭文轶刘海涛夏涛朱钰杰陈霜
Owner NANJING INST OF TECH
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