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Active distribution network planning method

A distribution network planning, distribution network technology, applied in the direction of genetic law, data processing application, system integration technology, etc., can solve the problem that the influence of distributed power sources on the operation state of the distribution network cannot be considered, and the power demand cannot be controlled. , the planning method is no longer applicable, etc., to achieve the effect of reducing infeasible solutions, improving the speed of optimization, and improving the absorption capacity

Active Publication Date: 2021-07-23
国网江西省电力有限公司经济技术研究院 +1
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Problems solved by technology

The traditional distribution network planning is mainly to plan the grid structure construction scheme of the distribution network, and cannot consider the impact of distributed power sources on the operation status of the distribution network.
At the same time, the power generated by distributed power generation depends largely on the local natural environment factors and cannot be completely controlled according to the user's power demand.
In order to meet the power demand of users at all times, the timing characteristics of distributed power sources must be fully considered in the planning of active distribution networks, which makes the traditional distribution network planning method for a single time section no longer applicable
Moreover, the method of calculating the operating cost of the distribution network based on the operation of the distribution network for 8,760 hours throughout the year is too complicated, the solution time required for planning is too long, and the practicability is poor

Method used

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Embodiment Construction

[0086] Such as figure 1 Shown is the method flowchart of the method of the present invention: the active distribution network planning method provided by the present invention includes the following steps:

[0087] S1. Establish a photovoltaic power generation output model and reduce the operating scenarios at the same time;

[0088] Use the following steps to establish a photovoltaic power generation output model:

[0089] A. Use the following formula to calculate the probability density function f(r) of sunlight intensity:

[0090]

[0091] In the formula, Γ is the Gamma function, r is the actual light intensity in the calculation period, and r max is the maximum light intensity in the calculation period, α and β are the parameters of the Beta distribution, and where μ s is the average light intensity, σ s is the standard deviation of light intensity;

[0092] B. Use the following formula to calculate the probability density function f(P) of the output power of t...

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Abstract

The invention discloses an active distribution network planning method, which includes establishing a photovoltaic power generation output model and reducing operation scenarios; establishing an optimization model for grid construction of a power distribution company; establishing an electricity price adjustment model for a power distribution company; and generating a grid structure of a distribution network ; Solve the generated model to get the final active distribution network planning scheme. The method of the present invention can solve the problem of active distribution network grid expansion planning, can select the optimal distribution network line construction scheme, reduce investment costs, improve the consumption capacity of distributed power sources, reduce light abandonment, and effectively reduce network loss. Improve the economics of the distribution network.

Description

technical field [0001] The invention specifically relates to a method for planning an active distribution network. Background technique [0002] With the development of national economy and technology and the improvement of people's living standards, electric energy has become an indispensable secondary energy source in people's production and life, bringing endless convenience to people's production and life. [0003] In recent years, under the environment of tight energy resources and increasing pressure on environmental protection, it has become an inevitable trend to connect distributed renewable energy with high penetration rate to distribution network. The traditional distribution network planning is mainly to plan the grid structure construction scheme of the distribution network, which cannot consider the impact of distributed power generation on the operation status of the distribution network. At the same time, the distributed power generation power depends largel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06G06N3/12
CPCG06N3/126G06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 李映雪朱文广周成刘小春熊宁钟士元郑富永王伟王丽
Owner 国网江西省电力有限公司经济技术研究院
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