PXI (PCI extensions for Instrumentation)-based networking online testing system of electric power quality

A power quality and online testing technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of lack of comprehensive remote active display of power quality, single function, indirect and other problems

Inactive Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0002] The traditional power quality tester takes MPU and MCU as the core, its functions are relatively single, and its signal processing and data analysis capabilities are relatively weak. It is more suitable for regular inspections and special inspections of power quality. , networked, and remote proactively display the full picture of power quality problems, the process is complicated and indirect

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  • PXI (PCI extensions for Instrumentation)-based networking online testing system of electric power quality
  • PXI (PCI extensions for Instrumentation)-based networking online testing system of electric power quality
  • PXI (PCI extensions for Instrumentation)-based networking online testing system of electric power quality

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specific Embodiment approach

[0037] Based on the virtual instrument technology, the present invention provides a power quality monitoring system, which solves the remote, real-time, all-weather, online monitoring method of the power quality state, including online monitoring, remote networked measurement and control, and tracking of operating conditions record etc.

[0038] like Figure 1-5 As shown, the present invention is a multi-layer control structure composed of hardware and software, including a hardware device layer, an I / O driver layer, and an application software layer.

[0039] The hardware includes PT / CT (voltage / current transformer), signal conditioning circuit, PXI data acquisition platform, server and computer. The hardware is responsible for signal acquisition and data acquisition. The information is transmitted through the data acquisition card and the data line, and the control acquisition card performs multi-channel real-time synchronous acquisition of the access signal.

[0040] The...

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Abstract

The invention relates to a PXI (PCI extensions for Instrumentation)-based networking online testing system of electric power quality. The testing system comprises a voltage and current transformer, a signal conditioning circuit and a data acquiring unit, wherein the voltage and current transformer is used for receiving an input electric power quality signal; the signal conditioning circuit is used for receiving the signal from the voltage and current transformer and processing the signal by reducing the voltage, filtering, blocking and amplifying; the data acquiring unit is connected with the signal conditioning circuit and used for reading a voltage signal and a current signal from the signal on real time. With the adoption of the testing system, the system can be remotely monitored on real time in the whole day by an online manner, the change conditions of the electric power quality of a power grid can be dynamically tracked, and the electric power quality of the power grid and the safe and stable running condition of the power grid can be analyzed and determined according to national standards on the electric power quality.

Description

technical field [0001] The invention relates to a power quality testing system, in particular to a PXI-based networked power quality online testing system. Background technique [0002] The traditional power quality tester takes MPU and MCU as the core, its functions are relatively single, and its signal processing and data analysis capabilities are relatively weak. It is more suitable for regular inspections and special inspections of power quality. , networked, and remote initiative to display the full picture of power quality problems, the process is complicated and indirect. Therefore, a new type of power quality testing system is needed. Contents of the invention [0003] Aiming at the above deficiencies in the prior art, the present invention provides a PXI-based networked power quality online testing system. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005] A PXI-based networked power quality online test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 刘晓丽孙涛路杰刘耀根李波涛袁硕马杰林雄武胡晶霞张秉仁
Owner STATE GRID CORP OF CHINA
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