Abstract
This study Development a high-speed data acquisition (DAQ) device by using AD9226 analog-to-digital converters, a field programmable gate array, and an ARM Cortex-A8 microprocessor for a self-designed synchronous 6-channel high-speed DAQ card that was able to transmit data to a computer through its network interface. Its cost was approximately 10% that of a commercial model, the National Instruments PXI-5105, and thus overcame the prohibitively high cost of commercial DAQ cards. A high-frequency current transformer (HFCT) was used to measure three types of typical partial discharge (PD) in self-made models to compare the performance of the self-designed DAQ card and that of the National Instruments PXI-5105. The HFCT signals were converted into three-dimensional PD patterns, and mean discharge was chosen as the feature to be extracted for the application of extension theory in the recognition of discharge models. The results revealed that the self-designed DAQ card was comparable to the commercial model in the recognition of high-frequency PD signals. Given the high price of commercial high-speed DAQ devices, the self-designed DAQ card was deemed to have considerable advantages in cost and expandability.
Highlights
High voltage power equipment plays a crucial role in the operations of electric power systems, being responsible for the supply, transmission, and distribution of electric power [1]–[4]
A comparison of these diagrams indicates that the 3D patterns of the self-designed data acquisition (DAQ) card were similar to those of the National Instruments (NI) PXI-5105, and the patterns varied by discharge type
This study developed a 6-channel high-speed DAQ card at a hardware cost of approximately 10% of the commercially available NI PXI-5105
Summary
High voltage power equipment plays a crucial role in the operations of electric power systems, being responsible for the supply, transmission, and distribution of electric power [1]–[4]. Because PD signal detection requires high-performance DAQ card hardware, commercial PD recognition devices are expensive. The PD signal detection performance of a self-designed highspeed DAQ card was compared with that of a commercial model, the National Instruments (NI) PXI-5105.
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