A method for selecting the optimal grid connection position of distributed power source

A distributed power supply and optimal location technology, which is applied to circuit devices, AC networks with the same frequency from different sources, electrical components, etc., can solve the problem of not taking into account system network loss, economic benefits, and multi-objective optimization that cannot achieve global optimization , Only consider issues such as voltage stability

Inactive Publication Date: 2018-12-11
STATE GRID CORP OF CHINA +1
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Problems solved by technology

Reasonable installation of distributed power in the distribution network can effectively improve the voltage of the distribution network, reduce system active power loss, and increase system load rate; on the contrary, if the configuration of distributed power is unreasonable, it will affect the safe and stable operation of the power grid
[0003] In the existing distributed power grid

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  • A method for selecting the optimal grid connection position of distributed power source
  • A method for selecting the optimal grid connection position of distributed power source
  • A method for selecting the optimal grid connection position of distributed power source

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[0118] figure 1 Shown is the IEEE33 standard node power distribution network system, the system bus voltage is 10.5kV. The distributed power supply uses a lagging power factor and a constant power model with a value of 0.9. The total capacity of the distributed power supply does not exceed the total load of the system. Assume that the active power of the distributed generation is P DG =m×50kW, where m is an integer. The initial active power loss before the distributed power grid-connected operation is 316.8768kW, and the static voltage stability index of the system is 0.1134. Since the power factor of distributed power is set to a constant value, its capacity can be represented by active power. When the capacity of distributed power generation is 1000kW, 30 nodes is the optimal installation position of distributed power generation after optimization using mimic physics algorithm. At this time, the static voltage stability index is 0.0626, and the active power loss is 141.0...

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Abstract

The invention relates to a method for selecting the optimal grid connection position of a distributed power source, which is characterized in that the method comprises the following contents: establishing a distribution network model containing the distributed generation, establishing a model for optimizing the configuration of grid-connected distributed generation based on a pseudo physical algorithm, establishing a multi-objective optimization process, and the like. Through calculation and analysis, the optimal installation position of distributed generation in distribution network and the optimal analysis of its admittance capacity after fixing the installation position of distributed generation are obtained,the methodhas strong robustness, adaptability and high practical application value.

Description

technical field [0001] The invention relates to the field of power generation system planning, and relates to a method for selecting an optimal location for grid-connected distributed power sources. Background technique [0002] The many advantages of distributed power generation technology have attracted more and more attention at home and abroad. How to choose the installation location of distributed power generation is an important issue in the operation and planning of distributed power generation. Reasonable installation of distributed power in the distribution network can effectively improve the voltage of the distribution network, reduce system active power loss, and increase system load rate; on the contrary, if the configuration of distributed power is unreasonable, it will affect the safe and stable operation of the power grid. [0003] In the existing distributed power grid-connected position optimization methods, on the one hand, it cannot achieve global optimiza...

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Application Information

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IPC IPC(8): H02J3/38H02J3/06
CPCH02J3/06H02J3/382
Inventor 贾宏智刘元琦迟作为卢政宝牛强郭威鲁歆旸辛鹏姜言金李振新
Owner STATE GRID CORP OF CHINA
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