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Power distribution network reactive power compensation planning method

A distribution network and planning technology, applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, AC network voltage adjustment, etc., can solve the problem of large power loss, reactive power consumption, and difficult to meet the improvement of voltage quality and requirements for reducing line loss

Inactive Publication Date: 2016-01-13
HENAN XINGZHI PATENT SERVICE CO LTD
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Problems solved by technology

On the other hand, the scale of the distribution network is large, and almost all loads and components of the distribution network need to consume reactive power. Due to the large power supply area and many power supply points of my country's distribution network, although years of power grid transformation have improved the power quality It has been greatly improved, but there are still problems of low voltage at the end of the line and large power loss in some areas
Traditionally based on experience or scheme comparison, the relatively rough reactive power compensation planning calculation method has been difficult to meet the requirements of modern distribution networks for improving voltage quality and reducing line losses

Method used

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  • Power distribution network reactive power compensation planning method
  • Power distribution network reactive power compensation planning method
  • Power distribution network reactive power compensation planning method

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Embodiment Construction

[0075] A method for reactive power compensation planning of a distribution network. For a distribution network, reactive power planning objectives include:

[0076] Layered and partitioned balance: Layering requires that under the condition of reasonable power factor, the reactive power at each voltage level should be reasonably balanced with the overall reactive power consumed in this layer, so as to reduce the difference of reactive power between different voltage levels. flow. Zoning requires that the reactive power between different areas be controlled at a reasonable level to avoid cross-transmission and use of reactive power.

[0077] No reactive power transfer: For medium-voltage distribution networks, reverse transmission of reactive power to high-voltage distribution networks under small load conditions should be avoided. If necessary, some parallel reactances can be added to balance some excess capacitive reactive power; low-voltage distribution networks The public ...

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Abstract

The present invention relates to a power distribution network reactive power compensation planning method. Through the setting of a reactive power compensation planning target, condition constraint and selected typical region calculation and the expansion to an entire network, the optimal compensation capacity and economic efficiency of reactive power compensation planning are obtained, the network loss is effectively reduced by using the reactive power compensation planning, the reasonable configuration of a reactive power compensation capacity is realized, and the safe and economic operation of a power system is ensured.

Description

technical field [0001] The invention relates to the technical field of distribution network power supply optimization, specifically, a method for reactive power compensation planning of a distribution network. Background technique [0002] While the distribution network transmits active power to power users, it also transmits reactive power. On the one hand, reactive power is the main factor affecting voltage quality. When the grid structure and voltage are determined, and the active power is constant, the voltage loss is mainly related to the value of the transmitted reactive power. On the other hand, the scale of the distribution network is large, and almost all loads and components of the distribution network need to consume reactive power. Due to the large power supply area and many power supply points of my country's distribution network, although years of power grid transformation have improved the power quality It has been greatly improved, but there are still proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/16
CPCY02E40/30
Inventor 马新攀
Owner HENAN XINGZHI PATENT SERVICE CO LTD
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