Visual relay protection setting calculation system and method

Abstract

The present invention proposes a visual setting calculation system and method for relay protection, which relates to the field of relay protection. According to the characteristics of power users, a visual setting calculation system integrating multiple functions is developed, including a human-computer interaction interface module and a calculation module. , data management module and report generation module, complete the drawing of geographical wiring diagram, form network topology structure from geographical wiring diagram, automatically complete node number and branch road number according to wiring diagram, call basic data for short circuit calculation; set calculation principle and formula storage In the calculation module, the standby data is formed according to the setting calculation principle, and the system setting calculation data is formed with the basic data. When the protection setting value exceeds the set threshold, the system will give a warning; finally, the calculation result will be generated and output as a report. In this method, the setting calculation part directly calls the result of the short-circuit calculation, which can save calculation time, and the calculation data of each module can generate a report separately, which is convenient for subsequent analysis and processing.

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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