Power grid model storage method based on graphic database

Abstract

The invention discloses a power grid model storage method based on a graphic database. The power grid model storage method comprises the following steps: establishing the graphic database on the basisof graphic and model data of a power distribution main station system; constructing a connection relationship of all devices; defining an equipment index; creating a node label and model relationship; and creating a subscription program, and performing topology through a topology algorithm provided by the graphic database. According to the method, the rapid traversal algorithm provided by the graphic database and the constructed graphic structure data are fully utilized to calculate the range of the opening and closing influence of the equipment and the power-on and power-off states, so thatthe calculation speed is increased and the cache space is saved; the topology analysis capability is improved by utilizing the graphic database, the new topology program does not need to reconstruct an equipment tree and traverse the whole tree structure, and the efficiency is very high in a single-machine environment.

Description

technical field [0001] The invention relates to distribution network data storage technology, in particular to a grid model storage method based on a graphic database. Background technique [0002] For the data security of the distribution network, there are currently two main monitoring methods, one is through the alarm information reported by the terminal, and the other is through observing the real-time status of the distribution network line diagram. The state rendering is performed on the graphics drawn by SVG to quickly update the changes of the device state and refresh the power-off state of the device in real time. The background is calculated by the topology program. When there are too many devices and lines, the The calculation process in this way will slow down, which affects the effect of rendering graphics in the foreground; at the same time, the background topology program calculation needs to cache the connection relationship of some devices, and the connectio...

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Problems solved by technology

[0002] For the data security of the distribution network, there are currently two main monitoring methods, one is through the alarm information reported by the terminal, and the other is through observing the real-time status of the distribution network line diagram. The state rendering is performed on the graphics drawn by SVG to quickly update the changes of the device state and refresh the power-off state of the device in real time. The background is calculated by the topology program. When there are too many devices and lines, the The calculation process in this way will slow down, which affects the effect of rendering graphics in the foreground; at the same time, the background topology program calculation needs to cache the connection relationship of some devices, and the connection relationship of the device needs to be recalculated every time it is calculated, resulting in program processing. time consuming

[0003] In the case of a stand-alone computer, there is only one topology program for the system, and it is necessary to cache the information of all devices in the memory, and continuously search and calculate the connection relationship between devices. This method is limited by the concurrency capability of the database and the memory of the physical machine; In the distributed case, when the calculation is not enough, it is necessary to continuously expand the computing nodes. In the above two cases, the opening speed of the foreground will slow down, and the speed of rendering device status and power-off status will change rapidly with the increase of data volume and access volume. slow problem

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