Power distribution network mobile energy storage configuration method based on Fourier-Legendre series

A mobile energy storage and configuration method technology, applied in electric vehicles, power management, circuit devices, etc., can solve problems such as undercompensation, increasing transformer tension, and increasing distribution network operating costs.

Active Publication Date: 2020-03-17
SHANDONG UNIV OF TECH
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Problems solved by technology

However, the reactive power compensation of the photovoltaic inverter is limited by its power factor (such as -0.9~+0.9), which is easy to weaken its voltage adjustment ability and cause undercompensation
[0004] However, the investment cost of the network reconfiguration method is relatively high, and it is difficult to solve the node overvoltage problem at the end of the feeder with this method
Adjusting the taps of the on-load transformer requires continuous and frequent adjustment of the transformer taps, which will easily reduce the service life of the transformer and increase the tension of the transformer
Abandoning light not only caus...

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  • Power distribution network mobile energy storage configuration method based on Fourier-Legendre series
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  • Power distribution network mobile energy storage configuration method based on Fourier-Legendre series

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Embodiment Construction

[0085] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0086] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Description...

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Abstract

The invention discloses a power distribution network mobile energy storage configuration method based on Fourier-Legendre series. The power distribution network mobile energy storage configuration method comprises the following steps of calculating the feasible regions of the active power output and the reactive power output of a photovoltaic inverter; establishing an energy reserve model considering the photovoltaic prediction uncertainty; establishing an energy state polynomial of mobile energy storage based on the Fourier-Legendre series; establishing a mobile energy storage transportationmodel considering truck transportation time and blocking delay; calculating a peak-valley usual period and establishing a corresponding load response model considering the price demand; establishing aphotovoltaic inverter and mobile energy storage coordinated power distribution network optimization model; and solving the power distribution network optimization model to obtain a mobile energy storage position and capacity configuration scheme and a photovoltaic inverter scheduling scheme. According to the method, the continuous charging and discharging model of the mobile energy storage is constructed, the energy storage states under different time scales can be accurately and effectively simulated, the optimal configuration capacity of the mobile energy storage and the optimal network access positions at different moments can be determined, and the problem of safe and economic operation of a power distribution network containing high-proportion photovoltaic power is solved.

Description

technical field [0001] The invention relates to a distribution network mobile energy storage configuration method based on Fourier-Legendre series, and belongs to the technical field of distribution network energy storage. Background technique [0002] With the accelerated development of the global economy, energy shortage and environmental pollution have become serious problems, which also promotes the research and development of renewable energy power generation. Photovoltaic power generation occupies a very important position in many renewable energy resources. At present, the number of photovoltaic grid-connected households in my country's low-voltage distribution network is increasing rapidly, and the grid-connected capacity is also continuously increasing. Due to the randomness, intermittency and volatility of household photovoltaics, a high proportion of photovoltaics connected to the grid will cause the network to face many risks, such as network voltage over-limit a...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32H02J3/00B60L55/00
CPCB60L55/00H02J3/008H02J3/32Y02T10/72
Inventor 陈佳佳王乐乐彭克赵艳雷
Owner SHANDONG UNIV OF TECH
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