Microcomputer relay protection tester is the core equipment in power systems for verifying and testing the performance of various relay protection devices



It is hailed as the "intelligent verifier" for ensuring the safety of the power grid. By simulating various normal and fault conditions in the power system, it applies precise voltage, current, and other signals to protection devices to verify the accuracy of their operating logic, settings, and timing.

⚙️ Core Principles and Technical Architecture

The core of the microcomputer relay protection tester is a complex system integrating high-performance computing, digital signal processing, and precision power amplification.

Control Core: Typically uses a high-performance industrial control computer (such as one running Windows) as the main control platform, responsible for providing a user-friendly human-machine interface, test module management, and data processing.

Signal Generation: With digital signal processors (DSP) and field-programmable gate arrays (FPGA) at its core, it performs high-speed digital computations to generate the required high-precision waveform data.

Digital-to-Analog Conversion: Through high-precision digital-to-analog converters (DAC, typically 16-bit), digital waveform signals are converted into analog small signals.

Power Amplification: The small signals are amplified by high-fidelity linear power amplifiers, ultimately outputting voltage and current signals with sufficient power and precision to meet the testing requirements of protection devices.