Peripheral manager of generator excitation adjusting device

Abstract

The invention relates to a peripheral manager of a generator excitation adjustment device, which is based on a programmable logic device, and performs frequency measurement and phase measurement for synchronization and other signals, and a synchronization sampling module performs synchronization sampling control and interrupt signal issuance according to the frequency measurement result , the periodic phase measurement module and the input sampling module are controlled by the interrupt signal to refresh the data to their respective RAMs, the pulse generation module generates a 6-phase single pulse, and outputs a 6-phase double pulse to the amplifying circuit through the logic combination module, and then sends it back to the pulse detection module , based on the 6-phase single pulse, measure the lag angle of the return double pulse of each phase, and save it in RAM. After receiving the interrupt signal, the CPU will read all the RAM in turn and give the trigger angle. The CPU monitoring module and AD monitoring module can Monitor abnormal behavior of CPU and AD chip. The invention can significantly reduce the interrupt density and transaction burden of the CPU, simplify the hardware logic structure of the device, improve the reliability of the device, and facilitate use, maintenance and upgrade.

Description

technical field [0001] The invention relates to a generator control device, in particular to a peripheral device manager of a generator excitation regulating device. The utility model belongs to the technical field of electric power automation. Background technique [0002] In the process of generator excitation adjustment, it is often necessary to complete the control and information processing of various external devices, including analog quantity acquisition, input and output, periodic phase measurement, synchronous capture, pulse trigger, pulse detection, and on-site monitoring. At present, in order to complete this kind of peripheral management, a variety of logic interface circuits are required, which increases the complexity of the device, making it difficult to debug, difficult to maintain, and poor in scalability; at the same time, peripheral tasks are sudden and frequent. If they are directly associated with the CPU, the efficiency of the CPU will be greatly reduc...

AI Technical Summary

Problems solved by technology

At present, in order to complete this kind of peripheral management, a variety of logic interface circuits are required, which increases the complexity of the device, making it difficult to debug, difficult to maintain, and poor in scalability; at the same time, peripheral tasks are sudden and frequent. If they are directly associated with the CPU, the efficiency of the CPU will be greatly reduced, the stability of the CPU system will be reduced, and the safe and reliable operation of the generator excitation adjustment device will be affected.

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