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New energy output power fluctuation minimization scheduling method and device with energy storage

A technology for output power and energy storage devices, applied in circuit devices, reducing/preventing power oscillation, wind power generation, etc., can solve the problem of inability to effectively suppress large-scale and frequent fluctuations of new energy sources, limited capacity of energy storage devices, and lack of scheduling Methods and other issues to achieve the effect of reducing fluctuations, wide applicability, and reducing fluctuations

Active Publication Date: 2020-06-12
TSINGHUA UNIV
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Problems solved by technology

However, this type of control method only considers real-time regulation or smoothing based on short-term power prediction, and can only passively improve the smoothness of the existing power curve, lacking the consideration of scheduling methods on long-term time scales
And due to the limited capacity of the energy storage device, it cannot effectively suppress the long-term, large-scale and frequent fluctuations of new energy

Method used

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  • New energy output power fluctuation minimization scheduling method and device with energy storage
  • New energy output power fluctuation minimization scheduling method and device with energy storage
  • New energy output power fluctuation minimization scheduling method and device with energy storage

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Embodiment Construction

[0048] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0049] The following describes the new energy output power fluctuation minimization scheduling method and device with energy storage according to the embodiments of the present invention with reference to the accompanying drawings. First, the new energy output with energy storage proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings. Power fluctuation minimization scheduling method.

[0050] figure 1 It is a flowchart of a scheduling method for min...

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Abstract

The invention discloses a new energy output power fluctuation minimization scheduling method and device with energy storage. The method comprises the following steps: obtaining a wind power output value and establishing a wind speed transfer probability model; obtaining device information of an energy storage device in a power plant and obtaining quantity of state of second discrete; combining thewind power output value, residual electric quantity of the energy storage device and the state vector generated at the current time to construct a Markov decision model; obtaining an optimum strategy; and carrying out real-time scheduling on the strategy to obtain an optimum result updated in real time. The method can schedule the energy storage device, provide a long-term and wide-scale scheduling strategy to reduce fluctuation of new energy output power and can carry out real-time scheduling to obtain the optimum scheduling strategy, and has the advantages of being simple and convenient andwide in applicability.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, in particular to a method and device for minimizing fluctuations in output power fluctuations of new energy sources with energy storage. Background technique [0002] New energy technology is developing rapidly around the world. However, its output is volatile and random, which makes it difficult to execute dispatching instructions. After large-scale grid connection, it is inevitable to have real-time balance of power supply and demand, voltage stability, and frequency of conventional energy power systems. Stability and power quality will be affected. The Energy Internet can improve the utilization rate of new energy through the access of large-scale distributed energy storage systems, and alleviate the impact of the volatility of new energy on the power grid to improve power quality. [0003] Wind power, solar photovoltaic power generation, etc. all belong to the category of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/24H02J3/28
CPCH02J3/24H02J3/28H02J3/386H02J2203/20Y02E10/76
Inventor 夏俐杨震赵千川管晓宏
Owner TSINGHUA UNIV
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