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Distributed power supply planning method based on capacity limitation of power supply equipment

A distributed power supply and power supply equipment technology, applied in the field of electric power system, can solve the problems of changing the capacity of the grid energy storage system, increasing the infrastructure cost of photovoltaic/wind power/energy storage system power supply enterprises, etc., so as to improve the benefits of enterprises, reduce power costs, The effect of increasing rationality

Pending Publication Date: 2021-07-16
国网江西省电力有限公司赣州供电分公司 +1
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Problems solved by technology

[0009] The present invention mainly solves the problem that the energy storage optimization of the micro-grid needs to change the capacity of the original energy storage system of the power grid in the existing technology; it provides a distributed power supply planning method based on the capacity limitation of the power supply equipment, which can be used without a comprehensive transformation of the transmission network Under the premise, by adding photovoltaic / wind power / energy storage systems to meet the electricity demand of users and reduce the infrastructure cost of power supply enterprises

Method used

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  • Distributed power supply planning method based on capacity limitation of power supply equipment
  • Distributed power supply planning method based on capacity limitation of power supply equipment
  • Distributed power supply planning method based on capacity limitation of power supply equipment

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Embodiment

[0060] Embodiment: A distributed power supply planning method based on power supply equipment capacity constraints, including the following steps:

[0061] S1: Establish a user-side load response model based on the time-of-use electricity price; the specific method is: season s in the power supply area i The user load at time t every day is Assuming a constant increase in load per year increase, assuming that the planning period is T years, then the user load at the end of the planning period is

[0062]

[0063] seasons i The electricity consumption in the peak, flat and valley periods are respectively The elastic relationship between electricity quantity and electricity price is defined as where L 0 and p 0 Indicates the initial user load and electricity price; ΔL and Δp are load and electricity price changes; season s i The electricity consumption in each time period before the implementation of time-of-use electricity price is After the time-of-use electric...

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Abstract

The invention discloses a distributed power supply planning method based on capacity limitation of power supply equipment. The method comprises the following steps: establishing a user side load response model based on time-of-use electricity price; according to a user load demand, in combination with a micro-grid operation strategy, establishing a target function taking the maximum total income of micro-grid planning as a target; and in combination with the constraint condition, optimizing the target function, and performing distributed power supply planning according to an optimization result. On the premise that a power transmission network is not comprehensively transformed, the electricity demand of a user is met and the capital construction cost of a power supply enterprise is reduced by adding a photovoltaic / wind power / energy storage system; photovoltaic, wind power and energy storage micro-grids are planned and configured by considering the influence of different weathers on photovoltaic power generation, so that the rationality of distributed energy distribution is improved; the maximum influence of the time-of-use electricity price on the microgrid income is considered, the benefits of enterprises are improved, and the electric power cost is reduced.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a distributed power supply planning method based on the capacity limitation of power supply equipment. Background technique [0002] Due to the rapid economic development in recent years, the original transmission lines, distribution transformers and other power grid power supply equipment are difficult to meet the demand for rapid growth in electricity consumption. In order to reduce power supply costs, the photovoltaic / wind power / storage The energy system is an effective means to meet the electricity demand of users and achieve regional balance. [0003] Traditional power grid planning often takes a large area as the research object, and meets the needs of economic development through overall planning. With the rapid growth of power supply load and the wide application of distributed power, in recent years, the traditional active distribution network has been centralized ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q30/02G06Q50/06
CPCG06Q10/0631G06Q10/067G06Q30/0202G06Q30/0206G06Q50/06Y02E40/70Y04S10/50Y04S50/14
Inventor 刘秋林谢晓帆王磊
Owner 国网江西省电力有限公司赣州供电分公司
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