Multi-target power governance method for high-power-density distributed photovoltaic power connected power distribution network

A distributed photovoltaic, high power density technology, applied in the direction of photovoltaic power generation, electrical components, energy storage, etc., can solve the problems of voltage over limit, pollution, etc., to reduce the current harmonic distortion rate, maintain normal operation, and improve voltage deviation problem effect

Inactive Publication Date: 2018-10-16
TIANJIN UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned background technology, and provide a method for improving the power quality of

Method used

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  • Multi-target power governance method for high-power-density distributed photovoltaic power connected power distribution network
  • Multi-target power governance method for high-power-density distributed photovoltaic power connected power distribution network
  • Multi-target power governance method for high-power-density distributed photovoltaic power connected power distribution network

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Example Embodiment

[0108] The best embodiment of the present invention:

[0109] A 33-node power distribution system such as figure 2 As shown, the total active load of the system is 3715.0kW, and the total reactive load is 2300.0kvar. The reference value of the system line voltage is 12.66kV, and the branch parameters and node load parameters are shown in Table 1.

[0110]

[0111]

[0112] Table 1 shows the branch parameters and bus load data of the 33-bus system

[0113] The system is connected to 16 high-power-density photovoltaics at the corresponding nodes, and the connection location and power are shown in Table 2. Set the installation range of the composite energy storage device to nodes 1 to 32, the maximum number of connections is 2, and the maximum installed power is 600kW.

[0114]

[0115]

[0116] Table 2 High-power-density photovoltaic access location and capacity

[0117] Set the number of particles of the improved particle swarm algorithm to 100, the number of iterations to 50, and set...

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Abstract

The invention discloses a multi-target power governance method for a high-power-density distributed photovoltaic power connected power distribution network. The method includes the following steps that 1, storage batteries and supercapacitors are disposed on corresponding positions of the power distribution network to construct a combined energy storage system; 2, constraint conditions are made for the combined energy storage system; 3, node voltage deviation and a total harmonic distortion rate of current are adopted as power quality governance indexes of the combined energy storage system; 4, configuration of the evaluation indexes is carried out for the combined energy storage system after power quality governance. The method can solve power quality problems such as voltage over-limit and harmonic pollution which are caused by the high-power-density distributed photovoltaic power connected power distribution network.

Description

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Claims

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Application Information

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Owner TIANJIN UNIV
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