Self-adaptation intelligent power grid substation relay protection tester

Abstract

The invention discloses a self-adaptation intelligent power grid substation relay protection tester. The tester comprises a switching value input module, a switching value output module, an optical fiber interface module, a small signal output module, a DSP module, an FPGA module, a digital-analog conversion module, a FLASH module, an RAM module, a communication module, an HPI interface module and a PHY module. The tester further comprises a self-adaptation circuit connected with the switching value input module, the DSP module is connected with the FPGA module through the HPI interface module, the FPGA module and the FLASH module are connected with the optical fiber interface module, the DSP module is connected with the RAM module, the FPGA module is further connected with the communication module, the switching value input module and the switching value output module through the PHY module, and the DSP module is connected with the small signal output module through the digital-analog conversion module. The tester is based on the self-adaptation circuit so that the tester can self adapt to active or passive switching value input, switching value forms of various types can be received, configuration is not needed in advance, operation steps are reduced, and safe and stable operation of the relay protection tester is guaranteed.

Description

technical field [0001] The invention relates to an adaptive relay protection tester for smart grid substations. Background technique [0002] With the rapid development of the national economy, the demand for electricity in all walks of life is increasing, and the requirements for the quality (stability, uninterrupted and accompanying services) of power supply provided by the power supply department are also getting higher and higher. The system has invested heavily in the automation transformation of power generation, transformation and distribution systems. The relay protection device is one of the most important secondary equipments in the power system, and it is the guarantee for the safe operation of the power system. Numerous examples at home and abroad prove that most of the large-scale system accidents involving power outages are directly or indirectly related to incorrect actions of relay protection devices. Therefore, it is an important condition to ensure the sa...

AI Technical Summary

Problems solved by technology

[0003] Due to the small amount of information feedback in traditional substations, the difficulty of summarizing and analyzing fault information, the complicated and cumbersome wiring, and the safety risks for on-site test operators, as well as the rapid development of information, communication and network technologies in recent years, people have begun to try to use optical Communication to overcome these shortcomings of traditional substations, coupled with the country's strong support for digital substations, making optical digitalization of substations, including power systems, an inevitable trend. For this change, corresponding products must be produced to match it

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