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Simulation evaluation method for access of distributed power source to power distribution network

A distributed power supply, simulation evaluation technology, applied in the direction of electrical digital data processing, single network parallel feeding arrangement, instruments, etc.

Inactive Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +2
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  • Description
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Problems solved by technology

Although the proportion of renewable energy power in the country's total electricity consumption is much lower than that of the above-mentioned European countries, the development speed is very fast

Method used

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  • Simulation evaluation method for access of distributed power source to power distribution network
  • Simulation evaluation method for access of distributed power source to power distribution network
  • Simulation evaluation method for access of distributed power source to power distribution network

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] In order to effectively evaluate the impact of distributed power access on the distribution network, ensure the safe and reliable operation of distributed power grid-connected, and take into account the market economy, the present invention provides a simulation evaluation of distributed power access to the distribution network method (such as figure 1). The distributed power access system needs to consider its impact on voltage quality. Because power electronic devices such as inverters are often used when general distributed power sources are connected to the grid, the frequent switching of switching devices and the fluctuation of output power of new energy sources are likely to cause voltage flicker, voltage fluctuations, and voltage imbalances at the point where they are connected to the grid. The corresponding evaluation indicators should be abl...

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Abstract

The invention provides a simulation evaluation method for access of a distributed power source to a power distribution network. The simulation evaluation method comprises the steps that a power distribution network topology model is established; a current result of the power distribution network is calculated; simulation evaluation of access of the distributed power source to the power distribution network is conducted. According to the simulation evaluation method for the access of the distributed power source to the power distribution network, through establishment of the power distribution network topology model containing the distributed power source, current information of a whole system is calculated; through a constructed evaluation index system for access of the distributed power source to the power distribution network, an index weight evaluation method is adopted to score the influence of access of the distributed power source on the power distribution network, and a result can provided guide suggestions for access of the distributed power source.

Description

technical field [0001] The invention relates to a method, in particular to a simulation evaluation method for a distributed power source connected to a distribution network. Background technique [0002] With the shortage of traditional energy, the continuous growth of power demand, and the deteriorating environment, the development of distributed energy has attracted widespread attention from all over the world. Distributed Generation-DG (Distributed Generation-DG) is a new and promising comprehensive utilization of power and energy. It has the advantages of saving investment, reducing losses, improving system reliability, high efficiency, and various energy types. Its location is flexible and decentralized, which perfectly adapts to the distributed power demand and resource distribution. [0003] In China, the "National Medium and Long-Term Science and Technology Development Program (2006-2020)" has listed "distributed energy supply technology" as a key frontier technolog...

Claims

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Application Information

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IPC IPC(8): G06F19/00H02J3/38
Inventor 范士雄刘广一蒲天骄杨占勇杨洋王袭
Owner STATE GRID CORP OF CHINA
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