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Frequency modulation evaluation method of multipoint energy-accumulation coordinated distributed power supply

A technology of distributed power supply and evaluation method is applied in the field of frequency regulation capability evaluation of multi-point energy storage coordinated distributed power supply, which can solve the problems of increasing the uncertainty of peak regulation and frequency regulation of power grid, and achieve the effect of accurate evaluation.

Active Publication Date: 2018-03-06
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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Problems solved by technology

The large-scale grid connection of fluctuating and random distributed power generation has a major impact on grid operation, increasing the uncertainty of grid peak regulation and frequency regulation

Method used

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  • Frequency modulation evaluation method of multipoint energy-accumulation coordinated distributed power supply
  • Frequency modulation evaluation method of multipoint energy-accumulation coordinated distributed power supply
  • Frequency modulation evaluation method of multipoint energy-accumulation coordinated distributed power supply

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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The technical scheme adopted in the present invention is as follows:

[0044] A multi-point energy storage coordinated distributed power generation frequency modulation capability evaluation method,

[0045] Before starting, set the timing scenario T={t 1 ,...t i ,...t N},i=1,…,N, where, t i is the discrete time point, and N is the total discrete time length.

[0046] Step S1: Calculate the maximum deviation of the net load of the multi-point ener...

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Abstract

The invention provides a frequency modulation evaluation method of a multipoint energy-accumulation coordinated distributed power supply, and the method is suitable for regulation competence evaluation methods of power distribution network frequency fluctuation caused by coordinated area distributed power supply power fluctuation in a multipoint energy-accumulation disperse access power distribution network. The load deviation and the distributed type power supply power deviation of a regional power grid are calculated, firstly the net load maximum deviation of the regional power grid is predicated and calculated on the basis of the load and the super short period power of the distributed type power supply, then the multipoint energy-accumulation regulation volume bounds and the power regulation rate limit value and power exchange capacity limit values of the regional power grid and an external power grid are calculated, and finally the frequency modulation capacity sufficient degree of the regional power grid is calculated, namely regional power grid frequency modulation capacity evaluation result. According to the frequency modulation evaluation method of the multipoint energy-accumulation coordinated distributed power supply, the frequency modulation support capacity of the multipoint energy-accumulation to the regional power grid can be effectively and accurately evaluated,and further the abundant degree of the the frequency modulation usable regulation volume of the regional power grid is further evaluated.

Description

technical field [0001] The invention relates to the technical field of distributed power distribution, in particular to a frequency modulation capability evaluation method of multi-point energy storage coordinated distributed power supply. Background technique [0002] With the adjustment of the industrial structure, the power grid is facing problems such as the further increase of the peak-to-valley difference, the sudden increase of intermittent new energy access, and the low return on investment and expansion of the distribution network. Taking Henan Province as an example, the power supply reliability of the urban distribution network is low, and the problems of "low standards, weak connections, heavy overload, and low voltage" in the urban and rural distribution networks are prominent; the installed capacity of distributed power sources such as photovoltaics is showing a trend of rapid growth. The large-scale grid connection of fluctuating and random distributed power g...

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Application Information

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IPC IPC(8): H02J3/28H02J3/46
CPCH02J3/28H02J3/46
Inventor 李朝晖张振安李文启杨海晶张景超高东学滕卫军王骅孙亮
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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