Method for calculating cooperative power flow of active power distribution network and power transmission network based on SoS (System of Systems)

A technology of active distribution network and power flow calculation, applied in the direction of AC network, circuit device, AC network circuit, etc. with the same frequency from different sources

Inactive Publication Date: 2017-03-22
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

The transmission network and active distribution network, which are part of the power system, conform to their ch...

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  • Method for calculating cooperative power flow of active power distribution network and power transmission network based on SoS (System of Systems)
  • Method for calculating cooperative power flow of active power distribution network and power transmission network based on SoS (System of Systems)
  • Method for calculating cooperative power flow of active power distribution network and power transmission network based on SoS (System of Systems)

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Embodiment Construction

[0019] The method for calculating the coordinated power flow of an active distribution network and a transmission network based on SoS according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0020] A SoS-based active distribution network and transmission network coordinated power flow calculation method, comprising the following steps:

[0021] S1: Define the power system as SoS, and establish the SoS model of the power system

[0022] Specifically, the transmission network and the active distribution network in the power system can be operated and managed independently, with only information interaction. Since they are independent systems that can be used independently, the competition and cooperation relationship between them can be expressed by the concept of SoS. The schematic diagram of the SoS model of the power system is shown in figure 2 .

[0023] S2: Model the transmission network and the active di...

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Abstract

The invention discloses a method for calculating cooperative power flow of an active power distribution network and a power transmission network based on a system of systems (SoS). The method comprises the steps of defining an electric power system to be the SoS, and building an SoS model; modeling the power transmission network and the active power distribution network to be two independent systems in the whole system; considering the relation between a distributed power supply and a load in the active power distribution network, and determining an operating state of the active power distribution network; respectively considering power flow calculation of the active power distribution system and the power transmission network system according to different operating states of the active power distribution network; taking boundary calculation results of the two systems as initial values of each iteration thereof until the boundary results converge, and acquiring a power flow calculation result of the whole electric power system. According to the invention, the SoS model for power flow calculation of the electric power system is built, the power transmission network and the active power distribution network are modeled to be two independent systems, and voltage and power of only boundary nodes are required to be interacted, so that complex power flow calculation of the electric power system is enabled to be simplified. In addition, distributed management is easy to be performed, and a certain basis is laid for optimization of a distributed electric power system.

Description

technical field [0001] The invention belongs to the technical field of power system power flow calculation, and relates to a SoS-based method for calculating a coordinated power flow of an active distribution network and a transmission network. Background technique [0002] With the development of the power system, the operation of the distribution network has changed from passive to active due to the addition of distributed power sources, energy storage systems and control devices, and the concept of active distribution network came into being. The active distribution network has four characteristics, one is to have a certain distributed controllable resources, the other is to have a relatively complete and considerable controllable level, the third is to have a management and control center for coordinated and optimized management, and the fourth is to have a flexible and adjustable network topology . With the addition of the active distribution network, while bringing be...

Claims

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 马瑞郭光颜宏文
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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