A distribution network evaluation and grid optimization analysis method

An analysis method and grid optimization technology, applied in the field of optimization analysis, can solve the problems of many equipment, complex structure, lack of quantitative analysis methods, etc., to reduce the occupation and improve the operation speed.

Active Publication Date: 2017-05-10
STATE GRID CORP OF CHINA +3
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Problems solved by technology

As the "capillaries" of the power grid, the distribution network is directly connected to the user's engineering. Its structure is complex and there are many equipments, but it has not been paid enough attention, and it lacks systematic and quantitative analysis tools. Compared with the transmission network, distribution network management and The overall technical level of the operating personnel is relatively weak
For a long time, the construction, operation and management of the distribution network mainly rely on experience to make decisions, lack of effective quantitative analysis methods, and it is difficult to meet the requirements of the rapid development of the distribution network

Method used

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  • A distribution network evaluation and grid optimization analysis method
  • A distribution network evaluation and grid optimization analysis method
  • A distribution network evaluation and grid optimization analysis method

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[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. While the invention will be described in conjunction with the preferred embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, the invention is to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims.

[0045] In order to accurately study the distribution network, it is very important to establish an accurate and abstract network equipment model of the distribution network. All equipment in the power system can be abstracted as "parallel equipment" and "series equipment", reflecting that the research-level model is a single end and double-end models, such as figure 1 Shown:

[0046] For a grounded system, the node voltage generally takes the phase voltage V a , V b and V c is the reference v...

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Abstract

The invention discloses a power distribution network assessment and net rack optimized analysis method. Elements of a power distribution network have diversity, different line types may exist in a same feeder line, the elements in the same types can be combined before electrical calculation is carried out, the multiple elements in each same type are equivalent to an equivalent element with the parameter equal to the sum of parameters of the elements, and the scale of the power distribution network is greatly reduced. The calculation scale of the power distribution network can be generally reduced to 1 / 10-1 / 100 of the original scale, and due to the fact that iteration is required to be repeatedly carried out when calculation is carried out, the calculation speed is obviously quickened through reduction of the device number scale.

Description

technical field [0001] The invention relates to an optimization analysis method, more specifically, it relates to a distribution network evaluation and network frame optimization analysis method. Background technique [0002] The distribution network is an important part of the power grid. In the past, due to insufficient investment, the development of the distribution network was relatively lagging behind. The following problems still exist in the development of distribution network: first, the long-term investment is insufficient, and the development lags behind; second, the power grid structure is weak, and the security risk is large; more unfavorable. [0003] For quite a long period of time since the "Eleventh Five-Year Plan", China has entered a period of rapid power development, the speed of power grid construction has been accelerating, and the scale of power grids has continued to expand. PSASP, EDSA, PSD and other power system analysis software have played an act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
Inventor 叶铁丰马帮文陈小波
Owner STATE GRID CORP OF CHINA
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