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

A flexible load and dynamic programming technology, applied in data processing applications, AC network load balancing, forecasting, etc., can solve problems affecting the reliability of the power grid, large peak-to-valley differences, and difficulty in optimal scheduling of multiple energy storages

Active Publication Date: 2018-06-26
NANJING UNIV OF POSTS & TELECOMM
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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 drawings. According to the daily electricity demand, the present invention figure 1 The way shown will daily load P load Divided into important load P L1 , Can reduce load P L2 And translatable load P L3 , According to the nature of the load that can be reduced, it is divided into a translatable part that can reduce the load and a non-translatable part P L2A , P L2B . Increase or decrease the load in the original daily load curve. The increased load is called the excitation load, and the reduced load is called the interruptible load. The incentive mechanism of the excitation load and the compensation mechanism of the interruptible load are used 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 to balance the load on the power supply side and the power user side, and a multi-energy st...

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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 optimized dispatch method for flexible loads, in particular to a user-side flexible load dispatch method based on adaptive dynamic programming, and belongs to the technical field of power system automation. Background technique [0002] Energy and environmental issues have always been issues of concern to the world. As environmental issues have become increasingly prominent, people have turned their attention to new energy fields including wind energy and solar energy. At present, as one of the power generation methods with the highest development and utilization of renewable energy, wind power has played an important role in reducing environmental pollution and adjusting the 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 brought difficulties to the trad...

Claims

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Application Information

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Patent Type & Authority Patents(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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