A calculation method for a dispatching supervision breaker vector graph primitive coordinate conversion system

Abstract

The invention provides a calculation method for a dispatching supervision breaker vector graph primitive coordinate conversion system. The calculation method comprises the steps of using the object-oriented language Java for programming; with the SVG analysis component packet Batik serving as a vector graph primitive parser of a dispatching supervision graph interface, creating an SVG canvas object and loading the same in the memory of a dispatching exchange according to the document address of a dispatching supervision main wiring diagram; performing parsing treatment on the object by using the parser component to form an electric main wiring document object model corresponding to railway power supply-a DOM tree; when the document object model component receives breaker real-time state information of dispatching supervision in the DOM tree, performing coordinate conversion operation on the breaker graph primitives of the DOM tree, and according to the breaker graph primitive conversion of the DOM tree in the memory, updating the breaker graph primitives via the canvas component of dispatching supervision and displaying the conversion effect. The method can increase the real-time processing efficiency of dispatching supervision frames, thereby meeting the instantaneity requirement of a dispatching supervision system needing to track the states of railway power supply devices rapidly.

Description

technical field [0001] The invention relates to the technical field of dispatching and monitoring of railway power grids, in particular to a calculation method for a coordinate transformation system of a vector diagram element of a dispatching and monitoring circuit breaker. Background technique [0002] The railway power grid system and facilities are an important part of modern railway driving equipment. Affected by thunderstorms, strong winds, etc., the failure rate of railway power supply equipment is relatively high. It may cause late reporting, missing reporting or false reporting of key fault alarm information, and even cause safety accidents in severe cases. Therefore, the power supply dispatching center of the Railway Bureau uses automatic dispatching and monitoring as a real-time management platform for modern railway power grids, and provides dispatchers with a graphical interface to fully, deeply and timely grasp the real-time operating status of the system, make...

AI Technical Summary

Problems solved by technology

[0004] At present, most power dispatching automation systems are based on independent graphics systems to build models, and the graphics formats are diverse, resulting in poor portability and difficulty in graphics interoperability between systems. However, using Java language and SVG to develop dispatching monitoring systems can achieve platform independence. It breaks through the fast interaction problem of vector graphics interoperability, but efficient graphics interaction is based on fast primitive processing. However, there are very few special reports on the rapid monitoring of vector graphics primitive processing, and the technical bottleneck is The reason is that the coordinate transformation system of vector graphics elements of dispatching and monitoring equipment has not yet been established. Therefore, the coordinate transformation system of vector graphics elements of key power supply equipment in dispatching and monitoring and related calculation methods for fast transformation are the key to quickly respond to interface graphics and the state of railway power supply equipment. The key breakthrough of real-time changes, the present invention takes the circuit breaker vector element as an example, and discloses a calculation method for the coordinate transformation system of the dispatching and monitoring circuit breaker vector element coordinates

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