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Active distribution network planning method

A distribution network planning and distribution network technology, applied in the fields of genetic laws, instruments, data processing applications, etc., can solve problems such as long solution time, complex methods, and inability to control electricity demand.

Active Publication Date: 2019-01-18
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distribution networks, which makes the traditional distribution network planning method for a single time section no longer applicable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, comprising the steps of establishing a photovoltaic power generation output model and reducing an operation scene; Establishingthe optimization model of distribution company grid construction; Establishing the electricity price regulation model of distribution company; Generating a distribution network grid structure; obtaining the final active distribution network planning scheme by solving the generated model. The method of the invention can solve the problem of active distribution network frame expansion planning, canselect the optimal distribution network line construction scheme, reduce investment cost, improve distributed power dissipation capacity, reduce light discarding, effectively reduce network loss, andimprove the economy of 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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