System and method for detection of performances of phase modifier transformer bank protection device

Abstract

The present invention provides a system and a method for detection of performances of a phase modifier transformer bank protection device. The system comprises a phase modifier physical simulation unit, a main transformer physical simulation unit, a grounding transformer physical simulation unit, a frequency conversion starting device physical simulation unit, an excitation system physical simulation unit, a bus simulation unit, an injection loop physical simulation unit, a grid connected switch physical simulation unit, a transmission line physical simulation unit, an infinity system physicalsimulation unit and a plurality of current and voltage transformer physical simulation units. The system can fully simulate the operation mode and the operation features of a phase modifier transformer bank in an actual system, arranges fault points in the system, detect faults in each fault point through adoption of a mode of simulation for the phase modifier scene operation to reduce the information of the phase modifier transformer bank protection device to be detected and determine whether maloperation and movement refusing are generated or not so as to effectively verify the reliabilityand the power swing of the phase modifier transformer bank protection device.

Description

technical field [0001] The present invention relates to the technical field of relay protection, and more specifically, to a system and method for detecting the performance of a condenser transformer group protection device. Background technique [0002] In my country, on the one hand, according to the UHV DC design principles, the reactive power exchange between the DC converter station and the system is zero under normal working conditions, and the DC itself does not provide dynamic reactive power to the system. Therefore, in the dynamic process of system failure, DC needs to absorb a large amount of reactive power from the system. In the power grid at the receiving end, the problems of multiple DC commutation failures and voltage stability problems are becoming more prominent. On the other hand, UHV DC sending ends are mostly built in remote areas where large-scale new energy such as wind power and photovoltaics are intensively developed. The problems of weak grid struct...

AI Technical Summary

Problems solved by technology

However, at present, there are no test conditions for simulating the protection of condensers in the country. Therefore, in order to ensure that the protection device of the transformer group of the condenser can operate correctly, a system and method for testing the performance of the protection device of the transformer set of the condenser should be established to realize the protection of the condenser in different working conditions. , Testing under different fault types has become an urgent problem to be solved

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