High-performance transformer protection device

Abstract

The invention belongs to the technical field of transformer protection devices and provides a high-performance transformer protection device which is high in reliability and suitable for digital substations. According to the technical scheme, the high-performance transformer protection device comprises a main control unit, a signal acquisition unit, an input and output unit, a telemetry control unit, a power management unit and a human-computer interface unit, wherein the main control unit is connected with the signal acquisition unit, the input and output unit, the telemetry control unit, the power management unit and the human-computer interface unit; the main control unit comprises a first CPU module and a second CPU module; the first CPU module and a second CPU module are respectively connected with the signal acquisition unit, the input and output unit, the telemetry control unit, the power management unit and the human-computer interface unit. The high-performance transformer protection device is applicable to a power system.

Description

technical field [0001] The invention belongs to the technical field of transformer protection devices. Background technique [0002] In the current power application, the safe and stable operation of the power supply system is the basic premise of the use of power equipment and the basic guarantee to ensure the good development of the power system. As an important equipment in the power transformation and distribution link of the power system, power transformers are widely used in different voltage levels In substations, its faults and defects have a significant and important impact on the reliable and stable operation of the entire power system. Therefore, the protection of power transformers is particularly important; at the same time, with the development of power technology, comprehensive automation of power systems It has become an inevitable trend in the development of the power grid. The proposal of digital substation communication standards and the application of ele...

AI Technical Summary

Problems solved by technology

[0003] The performance of traditional power transformer protection devices is low. The protection program is started by collecting the voltage and current analog quantities and switching quantities of primary equipment for fault calculation. It lacks sampling and analysis of communication signals of digital equipment such as electronic transformers, which cannot meet the needs of current digital substations. Moreover, problems such as hardware failure and interference of protection devices may affect the accuracy of sampling data, resulting in fault judgment errors, protection program misoperation or refusal to operate, and low reliability of protection devices. to hidden danger

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