A method for automatic setting of relay protection setting value of generator-transformer unit

Abstract

The invention relates to an automatic adjusting method for a relay protection setting value of a generator-transformer unit. The automatic adjusting method comprises the following steps of: establishing controllable protection principle documents to form a protection principle template base; establishing a generator-transformer unit equipment component base, and constructing a mathematical model of a station; inputting parameters of equipment components, and automatically performing short-circuit calculation on the parameters according to the station model, wherein a calculation result is taken as a procedure parameter; loading corresponding protection principle documents from the protection principle template base according to protection modules input by the equipment components, inputting equipment parameters and the calculation result, and performing adjusting calculation on the equipment components and the protection modules gradually; and writing adjusting calculation results into a model document of the station and a protection calculation document for integration and connection, and finally outputting a protection setting calculation sheet. According to the automatic adjusting method is suitable for being used in units with various capacities and various generation types, the condition that the protection adjusting is accurate and efficient is ensured, and rapid respond to complex and changeful system running modes can be realized, and the working efficiency as well as the accuracy of a protection adjusting value can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric power system relay protection, and relates to a method for automatically setting the relay protection fixed value of a generator-transformer unit, which is mainly applicable to the relay protection fixed value setting of a large-scale power plant. Background technique [0002] It is very important to set the setting value of the generator transformer group relay protection (referred to as the generator-transformer group protection) in the power plant. Whether the protection setting value is correct or not will seriously affect the safe operation of the power plant and the system. At present, there are more and more giant supercritical steam turbine units and giant water turbine units of more than 600MW put into operation or under construction in my country, and the wiring type and operation mode of the units have also undergone great changes. The calculation content and process of setting value se...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic setting method for the relay protection setting of a generator-transformer unit, so as to solve the accident of the unit shutting down due to manual calculation errors in the setting of the relay protection setting of a large power plant, causing great economic losses to the electric field The problem

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