User-side flexible load scheduling method based on adaptive dynamic programming

A flexible load, dynamic planning technology, applied in data processing applications, AC network load balancing, forecasting, etc., can solve problems such as large peak-to-valley difference, obvious scheduling difficulty, and impact on power grid reliability.

Active Publication Date: 2017-12-08
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

When wind power is used for power supply, since the daily load curve and wind power output curve have obvious peaks and valleys, it is difficult to match wind power and load power consumption, which seriously affects the reliability of grid operation. Using multiple energy storage for charging and discharging can improve wind power. Scheduling is carried out to meet the needs of load balance, but as the peak-to-valley difference on the load side is getting larger and larger, it is becoming more and more difficult to optimize scheduling by using multiple energy storage
The randomness of wind power output and the uncertainty of load generation make the multi-energy storage model uncertain, which also brings difficulties to the optimal scheduling of multi-energy storage

Method used

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  • User-side flexible load scheduling method based on adaptive dynamic programming
  • User-side flexible load scheduling method based on adaptive dynamic programming
  • User-side flexible load scheduling method based on adaptive dynamic programming

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Embodiment Construction

[0046] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings. The present invention according to the daily electricity demand according to figure 1 The way shown will be the daily load P load Divided into important load P L1 , can reduce the load P L2 and the translatable load P L3 , according to the nature of the load that can be cut, it is divided into a shiftable part that can cut the load and a non-translational part P L2A ,P L2B . Increase or decrease the load in the original daily load curve. The increased load is called the incentive load, and the reduced load is called the interruptible load. Use the incentive mechanism of the incentive load and the compensation mechanism of the interruptible load to cut the peak and fill the valley of the original load curve. At the same time, the wind storage is used to supply power to the user side, so that the load balance between the power supply side and the ...

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Abstract

The invention discloses a user-side flexible load scheduling method based on adaptive dynamic programming, and belongs to the technical field of power system automation. The method, by using a translatable load and the translatable part of a reducible load on the basis of an original load power demand, guides a power load according to a compensation mechanism and a motivation mechanism so as to shave the peak and fill the valley of an original load curve, and supplies power to a user side by using wind reservoir so as to maintain a load balance between a supply side and a consumer side, trains a neural network in the adaptive dynamic programming to approximate a uncertain multi-energy-storage model to obtain the optimal load shifting mode and a multi-energy-storage charge and discharge mode, reduce system operating cost and enhance system stability.

Description

technical field [0001] The invention discloses an optimal scheduling method for flexible loads, in particular to a user-side flexible load scheduling method based on adaptive dynamic programming, and belongs to the technical field of electric power system automation. Background technique [0002] Energy and environmental issues have always been the concern of the whole world. With the increasingly prominent environmental issues, people have turned their attention to new energy fields including wind energy and solar energy. At present, wind power generation, as one of the power generation methods with the highest degree of development and utilization of renewable energy, has played an important role in reducing environmental pollution and adjusting energy structure. In recent years, more and more wind power has been connected to the power system. The randomness and fluctuation characteristics of wind power have impacted the safe and stable operation of the power grid and brou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/00H02J3/28H02J2203/20Y04S10/50
Inventor 岳东单延逍张慧峰
Owner NANJING UNIV OF POSTS & TELECOMM
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