Power fault recording device apply to dynamic recording of transmission lines in substations and power plants、fault record and real time monitoring and fault analysis.When the power system is in normal operation, it carries on the normal (steady state) recording,At the same time, the real-time monitoring and analysis of various operating parameters and electrical parameter are carried out.When various faults occur in power system such as short circuit, oscillation, frequency breakdown, voltage collapse.
power fault recorder monitoring device is formed by a recording management machine and 6 wave recording units,recording management machine and the recording unit communicated y the internet.The whole structure is divided into record wave management machine（ played by industrial control computer）、Acquisition and analysis case、AC and DC converter cabinet、ethernet switch、LCD、Printer、keyboard、Mouse and other components. There are 512M standard Flash，on the wave recording unit plate,which complete the function of data collection, start discrimination, data transmission and so on,The fault data is stored in Flash, and the Flash is the first stage storage of the recording data,the fault data is transferred to the recorder by point to point method through high speed Ethernet at the same time .Record wave recorder as the second stage of the recording data storage,It completed the recording of the data storage, communication, analysis, printing and set value settings and other functions.
The main features of the 9820 power fault recorder
High performance device design：the device designed by the enhanced 19 4U in device chassis which is the same as the relay protection device,the Plug-in type post insertion structure，complete separation of strong and weak electricityPrinted board design and processing using multilayer board and SMT technology,the reliability of the device has been greatly improved.
All embedded hardware platform：Embedded modularization CPU、32 bit floating point digital signal processor (DSP)、Programmable Logic Devices(FPGA)、Hierarchical distributed multi -CPU parallel technology；Rational function of dispersion、Compact structure、易In extension、Fully guarantee the strong data throughput and processing capacity of the device .electromagnetic compatibility（EMC）Grade IV test by severity. achieved a high performance, high reliability, non fan, low energy consumption of the whole integration of industrial design.
Advanced and reliable software platform：based on the advanced embedded real time multi task operating system platform,and used the software system architecture，Greatly improve the reliability of the software system and ensure that the entire device has excellent overall performance.Complete and reliable startup mode：Analog starting（Upper / lower / mutation）、Switch starting、Harmonic start、Sequence component start（Positive / negative / zero sequence）、Differential current start、Frequency is limited to start、Manual start、Remote start.
High precision data acquisition system：16 bit high precision A/D conversion,Sampling technique for high speed synchronous control of analog channel、Simulation of channel vector correction based on least square optimization（Including amplitude and phase error correction）、FPGA Automatic frequency tracking technology to ensure that the device in a wide range of data acquisition has processing accuracy.
365 days continuous steady state data record：The device is implemented for one year (365 days) to record all the analog quantity and switch quantity steady state data continuously,provided reliable data sources for large scale, long process, the research and analysis of the development of fault,The fundamental phase values of the steady state data are also provided.；Steady state, transient recording time, sampling frequency can be flexibly set；Transient data can be seamlessly embedded in the steady state data, so as to realize the steady state, dynamic and transient data analysis.
Powerful online analysis software：Graphical interface design;The same screen display of steady state data and transient data,unified analysis；With editing, roaming function,Provide the waveform display, superposition, combination, comparison, clips, add annotations and other analysis tools,Can be selective printing and print preview, with harmonic analysis, sequence component analysis, vector analysis, impedance analysis and display impedance changes in the trajectory and other functions.
Powerful calculation function: the calculation of active power, reactive power, power factor, frequency, voltage, current, impedance, phase angle, differential current, harmonic, sequence component.
The function declaration of the 9820 fault recording device
The monitoring software is composed of the online real-time monitoring software and the background analysis software. The online real time monitoring software is a powerful tool for the normal monitoring and the steady state analysis:
real-time monitoring : achieved the real-time waveform, real-time data (such as sampling value, effective value, amplitude and phase) and switch state monitoring function.
Steady state analysis: the realization of the comprehensive analysis of the data of the steady state, through the transient data seamless embedded technology, to achieve steady state, dynamic and transient
The unified analysis of the state data, the generation and development process of the fault.
Fault analysis: a comprehensive analysis of the transient wave recording data and other recorded data
Wiring settings: provide the basic information of the recording screen, according to the specific engineering changes related to the equipment information, access to the analog and switch quantity channel configuration and view.
System parameters: the acquisition board to provide the relevant parameters of the input and storage functions and the various channels for calibration.
Fixed value management: provide the record wave parameters and a variety of recorded wave fixed value of the changes, the cast back and save function.
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