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Dynamic reactive power adjustment method of power distribution network containing distributed power supply

A distributed power supply and adjustment method technology, applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, circuit devices, etc., to achieve the effect of increasing the voltage amplitude

Inactive Publication Date: 2016-11-30
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +3
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Problems solved by technology

[0003] With the grid-connected operation of more and more distributed generation (Distributed Generation, distributed generation), due to the influence of distributed generation in the power distribution system, the power flow characteristics of the distribution network have changed from traditional one-way flow to The new two-way flow, thus bringing many new challenges to the stable operation of the power distribution system

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  • Dynamic reactive power adjustment method of power distribution network containing distributed power supply
  • Dynamic reactive power adjustment method of power distribution network containing distributed power supply
  • Dynamic reactive power adjustment method of power distribution network containing distributed power supply

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Embodiment 1

[0029] The present invention provides a dynamic reactive power adjustment method including distributed power distribution network, such as figure 1 As shown, the dynamic reactive power adjustment method includes:

[0030] Step 1: Based on the zoning results of installed distributed power generation, combined with the active power loss of the distribution network system, the reactive power adjustment objective function min(f d );

[0031] Step 2: Obtain the load data of installed nodes in the distribution network system, process the load data according to the installation information of distributed power sources and capacitors in the distribution network system, and determine the probability power flow distribution of the distribution network system under the condition of no capacitor input Condition;

[0032] Step 3: Set the control variables for reactive power adjustment, perform integer coding on the number of capacitor inputs and actual switching times, use the coded data...

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Abstract

The invention provides a dynamic reactive power adjustment method of a power distribution network containing a distributed power supply. The method comprises the steps of building a reactive power adjustment objective function, and encoding parameters in a power distribution network system to carry out fitness calculation on the encoded data by combining a genetic algorithm, thereby obtaining an optimal solution of the objective function under the condition of separately planning the distributed power supply and a capacitor. The optimal solution is determined through the improved genetic algorithm by utilizing an expected value, obtained by a probabilistic load flow calculation method, of an active power network loss in modeling of dynamic reactive power adjustment in various regions, so that the voltage magnitude of an installation mode in the power distribution network can be improved.

Description

technical field [0001] The invention belongs to the field of electric equipment, in particular to a dynamic reactive power adjustment method of a distributed power distribution network. Background technique [0002] Facing the dual pressure of the current energy situation and the living environment, people began to continuously seek solutions to energy and environmental problems. Among them, distributed new energy power generation adopts clean and renewable energy as its primary energy, which is renewable, non-polluting, etc. Therefore, the development of distributed power generation technology has received extensive attention and strong support from countries all over the world. [0003] With the grid-connected operation of more and more distributed generation (Distributed Generation, distributed generation), due to the influence of distributed generation in the power distribution system, the power flow characteristics of the distribution network have changed from tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/18H02J2203/20Y02E40/30
Inventor 姚建华徐淦荣吴宇红纪涛杨强叶丽红蒋乐朱斌泉夏红鑫
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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