Visual relay protection setting calculation system and method

Abstract

The invention provides a visual relay protection setting calculation system and method, and relates to the field of relay protection. According to the using characteristics of power consumers, the visual setting calculation system integrated multiple functions is developed and comprises a man-machine interaction interface module, a calculation module, a data management module and a report generation module. The visual relay protection setting calculation method comprises the steps that drawing of a geographical wiring diagram is finished, a network topology structure is formed by the geographical wiring diagram, node numbering and branch node numbering are automatically finished according to the geographical wiring diagram, and short-circuit calculation is carried out by calling essential data; a setting calculation principle and a formula are stored in the calculation module, stand-by data are formed according to the setting calculation principle, system setting calculation data are formed by the stand-by data and the essential data, and the system gives an alarm when a protection constant value is larger than a set threshold value; finally, a report is generated by calculation results to be output. According to the visual relay protection setting calculation method, short-circuit calculation results are directly called in a setting calculation part, the calculation time can be saved, the report can be singly generated by the calculation data of each module, and subsequent analyzing and processing can be conveniently achieved.

Description

technical field [0001] The invention relates to the technical field of electric power system relay protection, in particular to a visual relay protection setting calculation system and method. Background technique [0002] Relay protection is a routine work in power production, and as the scale of the power grid becomes larger and larger, the structure becomes more and more complex. Large rings and small rings overlap each other, and long-term and short-term connections are common. Diversified power grid structures , changeable operation mode, different requirements of various types and specifications of electrical equipment for relay protection, diversified relay protection configuration schemes, various constantly developing protection measurement principles and components, various types, manufacturers in different countries The produced relay protection device products increase the workload and complexity of setting calculations. [0003] (1) The calculation of the tradi...

AI Technical Summary

Problems solved by technology

[0002] Relay protection is a routine work in power production, and as the scale of the power grid becomes larger and larger, the structure becomes more and more complex. Large rings and small rings overlap each other, and long-term and short-term connections are common. Diversified power grid structures , changeable operation mode, different requirements of various types and specifications of electrical equipment for relay protection, diversified relay protection configuration schemes, various constantly developing protection measurement principles and components, various types, manufacturers in different countries The produced relay protection device products increase the workload and complexity of setting calculations

[0003] (1) The calculation of the traditional relay protection setting value is mostly manual calculation, which is very complicated, and has the problems of low calculation efficiency, high work intensity, and low accuracy rate, and the protection setting value cannot be displayed to the grid in time staff member;

[0004] (2) With the popularization and deepening of computers, some setting calculation systems and methods have been developed, but the protection setting calculation systems and methods are independently developed by each manufacturer. There are many types of protection involved in the power grid, and it may be necessary to use multiple setting values ​​at the same time The calculation system and method, the generation of some reports need to manually compile the calculation results into the final document format, which is prone to errors, and the workload is heavy and repetitive.

Limit the promotion and application of the setting calculation system and method in different regions

[0005] (3) The setting calculation completed by the computer has the characteristics of single function, poor visibility, poor versatility, low degree of automation, lack of automatic connection function, and poor scalability. Developers are faced with huge program upgrades and maintenance work

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