A distribution network "source-network-load" two-stage multi-objective control method and system

A control method and technology for distribution network, applied in the field of distribution network, can solve problems such as damage to distribution lines, long consumption time, and inability to obtain optimal solutions.

A control method and technology for distribution network, applied in the field of distribution network, can solve problems such as damage to distribution lines, long consumption time, and inability to obtain optimal solutions.

CN111277004BActive Publication Date: 2020-09-29TIANJIN UNIV
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  • A distribution network "source-network-load" two-stage multi-objective control method and system
  • A distribution network "source-network-load" two-stage multi-objective control method and system
  • A distribution network "source-network-load" two-stage multi-objective control method and system

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Experimental program
Comparison scheme
Effect test

Embodiment

[0176] Figure 4 Shown is a schematic diagram of the implementation case of the two-stage multi-objective control architecture of the distribution network "source-network-load". In the above implementation case, the distance between each two nodes is taken as 2km, and the adjustable capacity range of distributed power is 0-500kW , the adjustable range of the flexible load is 0-300kW. After adopting the "source-network-load" two-stage multi-objective control method of the distribution network proposed by the patent of this invention, the results are shown in Table 1 and 2.

[0177] Table 1 Comparison of the effects before and after the centralized optimal control in the first stage

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[0179] Table 2 Comparison of the effects before and after the distribution optimization control in the second stage

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[0181]

[0182] It can be seen from Table 1 that after the optimization control in the first stage, the "source-network-load" distribution balance index ...

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Abstract

The invention discloses a 'source-network-load 'two-stage multi-target control method and system for a power distribution network, and aims to provide a control method and system capable of realizingthe stability of safe operation of a power distribution system. The method comprises the following steps: establishing a two-stage multi-objective mathematical optimization model; establishing a first-stage centralized optimization control objective function and a second-stage distributed optimization control objective function; solving a first-stage centralized optimization control objective function of the current day by adopting a multi-objective harmony search algorithm; setting weight preferences to obtain a network structure of the power distribution network and the total number of partition feeders; adopting a harmony search algorithm to solve a second-stage distributed optimization control objective function of the partition feeder line; if the current time point is equal to 24 hours, generating distributed power supply and flexible load power sequence data of the 24 time points; and if the current date is equal to the preset value, ending the whole calculation process. According to the method, the frequency of global information transmission processing is reduced, and the security is improved.

Description

technical field [0001] The invention relates to the technical field of distribution network, and more specifically, relates to a two-stage multi-objective control method and system of "source-network-load" distribution network. Background technique [0002] With the development of technology and the improvement of energy cleanliness and interaction, the distribution network has gradually developed into a complex system with high penetration distributed power supply, flexible load, and intelligent soft switch. The main changes include: [0003] (1) On the power supply side, with the massive access of distributed power sources such as wind power and photovoltaics, the traditional distribution network has become an active network, and the connected power supply presents the characteristics of dispersion, multiple points, wide area, and small capacity; [0004] (2) On the grid side, the introduction of intelligent soft switches, distribution automation terminals and other equipm...

Claims

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Application Information

Patent Timeline
29 Sep 2020
Publication
CN111277004B
IPC
H02J3/46; H02J3/14; H02J3/26
CPC
H02J3/14; H02J3/26; H02J3/46; Y02B70/3225; Y02E40/50; Y04S20/222
Inventors
朱丽; 叶学顺