Distribution network power state calculating method based on breadth-first traversal

Abstract

The invention provides a distribution network power state calculating method based on breadth-first traversal. Compared with the traditional power calculating method, the distribution network power state calculating method has the advantages of better flexibility, configurability and executing efficiency; general calculation logics are hidden in a power calculation service progress through high abstraction of an object in a problem domain; an engineer only need to provide equipment of an electrical network and a connection relationship of the electrical network, without providing any calculation logic, the power calculation service progress can automatically analyze and clarify the structure of the electrical network, and all connection means of various chain circuits, branch circuits, loop circuits and bypass circuits can be defined according to a uniform description means. The distribution network power state calculating method based on the breadth-first traversal can be used for only processing the power state of a circuit component related to equipment / element when the real-time power state of the equipment / element in the circuit changes, thereby increasing the power state calculating efficiency of the distribution network.

Description

technical field [0001] Data Monitoring and Acquisition System (SCADA) is the basis for constructing many power supply and distribution network automation application systems. As an important part of the SCADA system function, the calculation and display of the real-time charged status of each bus, equipment, and components in the controlled electrical network are as follows: The realization of scheduling and decision-making functions at all levels provides important reference information. With the improvement of computer software and hardware system performance, users have put forward higher and higher requirements for system function visualization, and the efficiency and effectiveness of distribution network live state calculation methods have become important technical indicators for evaluating SCADA system performance. Background technique [0002] The real-time charging status of each busbar, equipment and components in the electrical network is an important indicator of...

AI Technical Summary

Problems solved by technology

[0003] The traditional live state calculation method of the distribution network is mainly designed based on the following technical routes: (1) Manual setting method, that is, the system configuration personnel or dispatchers manually set the position according to the real-time status of each bus, switch, and switch in the system. The charging state of related components and equipment is set, which is a heavy workload and inefficient; (2) the global programming method, which is described by the system configuration personnel according to the connection relationship of each incoming line, component and equipment in the controlled electrical network Permanent programming, that is, to provide a live state calculation program / script for each wiring diagram in the SCADA system. Computing and refreshing in the charged state. Although this method has better performance and automation than the previous method, it also has the disadvantage of a larger configuration workload; Segmentation simplifies the programming of circuit live calculation logic. It is not necessary to provide a complex calculation program for each wiring diagram, but only to provide logic responsible for calculating the live state of local equipment and components for each sub-area of ​​the electrical network. This method is in a certain program. This simplifies the configuration workload, but puts forward higher requirements for the capacity and reliability of the operating system

When the live state of a certain node in the circuit changes, the distribution network live state calculation system / program designed according to schemes 2 and 3 usually actively or passively scans all devices and nodes in the entire wiring diagram, resulting in a large number of Repeated calculation also reduces the execution efficiency of the entire system to a certain extent

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