KR101722149B1 - Earthquake Detection Synchronization Power System Fault Recorder - Google Patents

Abstract

The present invention relates to an earthquake detection synchronization power system fault recording device and, more specifically, to an earthquake detection synchronization power system fault recording device which visually synchronizes and monitors earthquake detection of an installation place of the fault recording device to perform a function of finding integrity of a power system of the same time zone as earthquake occurrence.

Description

Earthquake Detection Synchronization Power System Fault Recorder {Earthquake Detection Synchronization Power System Fault Recorder}

The present invention relates to an earthquake-sensitive synchronous power system fault recording apparatus, and more particularly, to an earthquake-sensing synchronous power system fault recorder that monitors an earthquake of an installation site of a fault recorder, And more particularly, to a synchronous detection power system fault recording apparatus.

The government and the public are paying more attention to the safe operation of nuclear power due to the earthquake near the recent nuclear power plant operation site. The damage caused by the structures in the earthquake is directly caused by the earthquake but the electricity, The malfunctions or malfunctions can be caused to spread to a greater extent.

Therefore, there is a need for continuous control, and a system capable of immediately notifying or recording the malfunction or malfunction is required.

In addition, if a problem arises in the electric power source which is the driving energy of the power plant, it is necessary to grasp the cause of the occurrence, analyze the cause and prevent the spreading rapidly.

On the other hand, in order to promptly detect and warn an earthquake in case of an earthquake, an earthquake monitoring system is installed and operated in a monitoring place in various municipalities, public institutions, and social infrastructure management organizations.

In order to detect accurate information about the earthquake in the present earthquake, time synchronization is implemented using time information collected by using GPS module, real time clock (RTC) and network time protocol (NTP) module.

However, in this conventional technique, a specific correction method for time synchronization has not been disclosed, and only an earthquake monitoring system that expands a channel using a seismograph that performs Ethernet communication has been provided.

In addition, in the prior art, when data is sampled only for a short time, the error is not large and the synchronization is only performed by unilaterally adjusting the waveform even in a relatively long period of time.

Therefore, there is a problem that it is difficult to implement an earthquake monitoring system that can accurately detect and measure an earthquake occurrence time.

As a result, an earthquake-sensitive synchronous power system fault recorder capable of detecting the soundness of the power system during the same time of occurrence of a seismic event by monitoring the seismic detection of the installation place of the fault recorder is provided.

Korean Patent Publication No. 10-2015-0123550

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

An object of the present invention is to monitor the seismic detection of the installation place of the fault recording apparatus in synchronization with time, so as to grasp the soundness of the power system in the same time period during which the earthquake occurred.

According to an aspect of the present invention, there is provided an earthquake-

A signal processing processor unit 105;

An MMI processor 110 for exchanging data with the signal processor unit;

An analog signal acquisition unit 115 for simultaneously sampling the voltage and current instantaneous values of the analog signal channel and converting them into a digital code value;

A voltage and current instantaneous value of the power system which is the output of the analog signal acquisition unit and measures the power system operation function of voltage, current, power, reactive power and frequency from voltage and current instantaneous value, A phasor measurement of current / power, a power state, phase and power factor measurement using a voltage / current phaser, a system state measurement unit 120 for performing frequency measurement,

An earthquake output signal acquisition unit 125 for acquiring an analog output signal of the XYZ signal of the earthquake detection sensor and simultaneously sampling and converting the analog output signal to a digital code value;

A digital signal acquisition unit 130 for simultaneously sampling the contact signals of the respective seismic signals and the digital signal channels to convert them into logic values and eliminating the effects of contact chattering and noise;

A facility state measuring unit 135 for evaluating the state of the electric power facility represented by the earthquake signal and the digital logic signal acquired by the digital signal acquisition unit;

A power monitoring unit 140 for sampling the breaker operation indication contact and the power level detector output signal at the same time and converting them into a logic value;

An activation unit 145 for evaluating the state of the power system and the state of the electric power facility to log data and generate a start signal if the system is in a fault or abnormal state;

A memory unit 150 which operates upon receipt of a start signal of the starter unit and stores power system state measurement data according to a set file format for a set time before and after an event;

A digital signal output unit 155 that operates upon receipt of a start signal and generates an event signal corresponding to the start mode and the type and the cause of the start;

A recording unit 160 for continuously monitoring a seismic sensing state and a system state monitoring and setting data stored in the memory unit;

The data file stored in the recording unit is called to reproduce the seismic monitoring value, the instantaneous value, the rms value or the data of the pager and the waveform and the equipment condition and the event on the same time axis. The frequency spectrum analysis and the frequency spectrum of the effective value And an analysis unit 165 for performing analysis, thereby solving the problems of the present invention.

The earthquake-sensitive synchronous power system fault recording apparatus according to the present invention provides an effect that the soundness of the power system in the same period of time of the earthquake occurrence can be grasped by monitoring the seismic detection of the place where the fault recording apparatus is installed.

1 is a flowchart illustrating an operation of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.
2 is a hardware block diagram of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.
3 is an overall block diagram of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention will be described in detail.

1 is a flowchart illustrating an operation of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.

When power is supplied to the apparatus of the present invention, the system initialization routine (1) for initializing the apparatus of the present invention is operated to check whether there is an abnormality by itself and to read the setting file to set the apparatus.

In this case, when the apparatus of the present invention is initialized, an infinite loop for normal operation is entered. In the menu displayed on the monitor screen using the mouse or the key while continuing to monitor the applied seismic sensor and the power system state, 2), the display operation (3), the analysis operation (4), the copy operation (5), and the print operation (6) In the case of stopping the monitoring of the present invention or exiting from the endless loop is the case of stopping or setting operation of the apparatus of the present invention.

The setting operation (2) is an operation for entering the system configuration and operation data setting (7) mode for changing the system configuration or the setting value of the apparatus of the present invention so as to be suitable for the power system configuration and the earthquake sensor to be applied, When the operation is completed, the system is reinitialized with the set contents, and after the initialization, the setting operation can be executed again if necessary.

The display operation (3) is for switching the monitor display mode of the apparatus of the present invention. When the display operation menu is selected, the operation for shifting to the display mode switching (8) Display mode, pager display mode, instantaneous value frequency spectro display mode, and effective value frequency spectrum display mode can be selected. In each display mode, data, waveform, equipment status and event can be displayed on the same time axis .

In addition, the analysis operation (4) can be performed by reading data of a file stored in a recording medium in a format stored in the apparatus of the present invention or in a format recognizable by the present invention, Is an operation for calling an analysis routine (10) that can be reproduced in the earthquake, to evaluate the earthquake detection and power system condition, or to identify the cause of the abnormal condition.

In addition, it is necessary to investigate the cause of the event or to identify important facility operation characteristics by investigating the instantaneous value of voltage / current, the effective value or phasor of the system operation function, the frequency spectrum of the instantaneous value and the power facility condition, Facility effect analysis, analysis that is the main purpose of power system failure analysis.

In addition, the copying operation (5) is a copy operation (5) for storing the setting data file and the operation record file stored in the apparatus of the present invention or the analysis result of the analysis routine in the form of a file This is an operation for executing the copy routine 11.

In addition, the printing operation (6) is for executing the printing routine (12) for printing the setting data file and the operation record file stored in the apparatus of the present invention or the analysis result of the analysis routine in a report form on the printing paper Operation.

The processing routine 9 shown in Fig. 1 is a routine for performing data acquisition, earthquake monitoring, measurement, recording, display, communication, key scan, power supply monitoring, and the like. The routine includes a power monitoring unit 140, An earthquake output signal acquisition unit 125, a digital signal acquisition unit 130, a digital signal output unit 155, a system state measurement unit 120, a facility state measurement unit 135, a memory unit 150, The activation unit 145, the recording unit 160, the key scanning unit 170, the display unit 175, the printing unit 180, and the communication unit 185 are executed.

2 is a hardware block diagram of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the power supply circuit 21 means a power supply control circuit composed of various circuit breakers, switches, and relays for safely interrupting the power supplied via the input / output terminals.

At this time, the power supply unit 22 converts the power supplied via the power supply circuit to supply DC power to the respective constituent means of the present invention.

For example, a teaching-combining power converter configured by including an AC / DC converter and an AC / AC converter is configured.

In addition, the isolation and regulation of signals input to the apparatus of the present invention via input / output terminals is performed by an analog signal input circuit 26 and a digital signal input circuit 30, , A transformer for isolating and converting the current signal and a current transformer, a filter for removing noise, and an amplifying circuit for adjusting the signal level.

The digital signal input circuit 30 is a circuit including an optoelectronic device for inserting a contact signal inputted at a voltage level, a filter for eliminating noise, and an amplifying circuit for converting a contact signal into a logic signal.

The output of the analog signal input circuit 26, the earthquake output input circuit 37 and the digital signal input circuit 30 is input to a digital (Digital Signal Processor) The conversion of the value into the code data is processed in the analog-to-digital converter 27 and the digital signal input controller 31.

The analog-to-digital conversion unit includes an analog-to-digital converter (ADC) device for simultaneously acquiring voltage level analog signals of all channels output from the analog input circuit 26 and the earthquake output input circuit 37, .

The digital signal input controller 31 is connected to the semiconductor signal input circuit 37 and the semiconductor signal input circuit 30 so as to latch the logic signal output from the digital signal input circuit 30 until the digital signal processing device 23 reads the logical signal. Device.

The digital code data which are the outputs of the analog-to-digital converter 27 and the digital signal input controller 31 are processed in the digital signal processor 23 via the signal processor bus 38 and stored in the semiconductor memory 28 It is recorded.

The digital signal processing device 23 is a semiconductor device dedicated to signal processing, which is equipped with a software program for acquiring, measuring, and starting a signal, and managing each component related to signal processing from signal acquisition to output, The signal processing device bus line is a line on a printed circuit board for receiving commands and data between the respective components of the present invention.

The semiconductor memory 28 is a semiconductor device for storing programs and processing data installed in the digital signal processing device.

An event for transmitting the state to the outside via the digital signal output controller 35 and the digital output circuit 34 when it is determined that the system is in failure or abnormal state of the seismic detection and the system state evaluated by the digital signal processing device 23 Signal, and the digital signal output controller is a circuit for converting and latching an event signal of a digital code, which is transmitted via a signal processing device bus, into a logic signal.

The digital output circuit 34 includes an amplifier circuit for amplifying a logic signal commanded by the digital signal output controller, a relay circuit for outputting a contact (voltage / voltage-free contact) for generating an alarm or an operation signal to a peripheral device or an external device .

The MMI (Man-Machine Interface) processing unit 24 is connected to the digital signal processing unit 23 to transmit the earthquake sensing state and the system state information to the user and the external device, or conversely, ) And various terminal device driving modules. The MMI processing device receives the command and data from the digital signal processing device (23) via the signal processing device motion, Which is a general central processing unit (CPU) equipped with a software program for managing components related to MMI such as analysis, setting, display, and printing.

The MMI processing apparatus bus 38 is an electric line of a printed circuit board for receiving commands and data between the MMI processing device and the MMI terminal element. The MMI terminal device includes a key controller 25, a display driver 29 ), The printer controller 33, the communication controller 36, and the hard disk drive 32 constitute an MMI processing system.

The key controller 25 is a driver for driving a key for inputting or modifying a set value and performing a driving operation. The display driver 29 is a driver for displaying a seismic state, a power system state, And the printer controller 33 is a driver for driving a printer for printing an earthquake sensing state, a power system state, and a driving operation state, and the communication controller 36 is a communication driver for communicating with the remote monitoring & And the hard disk drive 32 is a driver for driving a hard disk, which is a recording medium for storing an earthquake sensing state, a power system state, and a driving operation state.

The object of the present invention can be achieved through the hardware configuration as described above.

3 is an overall block diagram of an earthquake-sensitive synchronous power system fault recording apparatus according to an embodiment of the present invention.

As shown in FIG. 3, the earthquake-sensitive synchronous power system fault recording apparatus of the present invention has the following configuration for performing earthquake detection synchronization and power system failure recording.

That is, in the earthquake-sensitive synchronous power system fault recording apparatus of the present invention,

A signal processing processor unit 105;

An MMI processor 110 for exchanging data with the signal processor unit;

An analog signal acquisition unit 115 for simultaneously sampling the voltage and current instantaneous values of the analog signal channel and converting them into a digital code value;

A voltage and current instantaneous value of the power system which is the output of the analog signal acquisition unit and measures the power system operation function of voltage, current, power, reactive power and frequency from voltage and current instantaneous value, A phasor measurement of current / power, a power state, phase and power factor measurement using a voltage / current phaser, a system state measurement unit 120 for performing frequency measurement,

An earthquake output signal acquisition unit 125 for acquiring an analog output signal of the XYZ signal of the earthquake detection sensor and simultaneously sampling and converting the analog output signal to a digital code value;

A digital signal acquisition unit 130 for simultaneously sampling the contact signals of the respective seismic signals and the digital signal channels to convert them into logic values and eliminating the effects of contact chattering and noise;

A facility state measuring unit 135 for evaluating the state of the electric power facility represented by the earthquake signal and the digital logic signal acquired by the digital signal acquisition unit;

A power monitoring unit 140 for sampling the breaker operation indication contact and the power level detector output signal at the same time and converting them into a logic value;

An activation unit 145 for evaluating the state of the power system and the state of the electric power facility to log data and generate a start signal if the system is in a fault or abnormal state;

A memory unit 150 which operates upon receipt of a start signal of the starter unit and stores power system state measurement data according to a set file format for a set time before and after an event;

A digital signal output unit 155 that operates upon receipt of a start signal and generates an event signal corresponding to the start mode and the type and the cause of the start;

A recording unit 160 for continuously monitoring a seismic sensing state and a system state monitoring and setting data stored in the memory unit;

The data file stored in the recording unit is called to reproduce the seismic monitoring value, the instantaneous value, the rms value or the data of the pager and the waveform and the equipment condition and the event on the same time axis. The frequency spectrum analysis and the frequency spectrum of the effective value And an analysis unit 165 for performing analysis.

2, the MMI processor unit 110 is a main processing unit that manages the signal processing software module of the present invention and schedules a processing procedure, 2 as a sub-main program for managing the MMI software module of the present invention while scheduling the processing sequence while exchanging data with the signal processor unit.

The analog signal acquisition unit 115 is a driving means for an ADC that simultaneously samples the voltage and current instantaneous values of the respective analog signal channels input to the apparatus of the present invention and converts them to digital code values.

The system state measurement unit 120 includes a software filter program for filtering the voltage and current instantaneous values of the power system, which are the outputs of the analog signal acquisition unit, a software filter program for filtering voltage, current, power, reactive power, Realization of various calculation algorithms such as voltage and current rms measurement algorithm to measure power system operation function, phasor measurement algorithm of voltage current, power using phase current and voltage factor measurement algorithm using voltage current phaser, frequency measurement algorithm And a measurement program for the measurement.

The earthquake output signal acquisition unit 125 receives the analog output signal of the earthquake sensor (xyz axis) signal input to the apparatus of the present invention and simultaneously samples the signal to drive the ADC 27 to be.

The digital signal acquiring unit 130 acquires the driving program of the digital signal input controller 31 that simultaneously samples the earthquake signals input to the apparatus of the present invention and the contact signals of the digital signal channels and converts them into logic values, Chattering and a software filter for eliminating the effects of noise.

The equipment condition measuring unit 135 is a configuration unit for evaluating the state of the power equipment represented by the earthquake signal and the digital logic signal acquired by the digital signal acquisition unit.

The power monitoring unit 140 simultaneously samples the output signal of the breaker operation indicator and the power level detector output signal of the power supply circuit 21 of FIG. 2 and converts them into a logic value, eliminates the influence of the chattering and noise of the contact, And a software filter for performing the above process.

The trigger module 145 may include a power system operation function that is an output of the system state measurement unit 120, power facility state data that is an output of the facility state measurement module, operation power state data of the power monitor unit 140, And a preset reference.

In addition, as a constituent means for logging the data and generating an event by evaluating the state of the power system and the state of the electric power facilities, and if the state is a failure or an abnormal state, the startup mode includes internal start- There are three kinds of starting modes: an external start by an external device start request signal, and a manual start by a user. In the internal start, there are three kinds of startup: level trigger, rate trigger, Swing trigger) to be programmed to generate a start signal when the power system state exceeds a preset upper or lower limit range.

The memory unit 150 is configured to record the power system state measurement data in the semiconductor memory 28 according to the set file format for a set time before and after the event,

The digital signal output unit 155 is constituent means for driving the digital signal output controller 35 that generates an event signal in response to a start signal and generates a start mode and a kind and a cause of the start.

The recording unit 160 is a database program for recording, storing, and searching for the seismic detection state, the system state monitoring, and the setting data recorded in the memory unit 150 of the signal processing processor unit 105 consecutively a certain number of times .

The analysis unit 165 calls a data file stored in the recording unit 160 for the purpose of reproducing and analyzing a past earthquake detection state, a power system operation state, and setting contents, , Instantaneous value, rms value, or phaser data, waveform and equipment status and events on the same time axis, frequency spectrum analysis for instantaneous values for power system failure identification and quality analysis, power fluctuation phenomenon and system It is a means of constructing power system regeneration and analysis for frequency spectrum analysis of effective value to obtain data for stability evaluation, power supply and power system planning, and so on.

The key scanning unit 170, the display unit 175, the printing unit 180, the communication unit 185, and the like shown in FIG. 3 are peripheral device driving software modules that are MMI components. The key scanning unit is a keyboard driving software program The display unit is composed of a monitor drive program and a screen display program, and displays the instantaneous value, the effective value and the phaser data, the waveform, the equipment status and the event on the same time axis, or displays the frequency spectrum of the instantaneous value, And a waveform are displayed.

The printing unit 180 includes a printer driving program and a program such as a hard copy and a report output form of the screen. The communication unit 185 transmits data to a remote external device in accordance with a communication protocol designated by the user It is a constituent means for sending or receiving.

Through the above-described structure and operation, it is possible to monitor the synchronization of the earthquake detection at the place where the fault recording apparatus is installed, thereby providing the effect of checking the soundness of the power system in the same time period during which the earthquake occurred.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is to be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive.

105: signal processing processor unit
110: MMI processor unit
115: analog signal acquisition unit
120: system state measuring unit
125: Earthquake output signal acquisition unit
130: Digital signal acquisition unit
135: Equipment condition measuring unit
140:
145:
150:
155: Digital signal output section
160:
165: Analysis Department

Claims (2)

1. An earthquake-detection synchronous power system fault recording apparatus,
A signal processing processor unit 105;
An MMI processor 110 for exchanging data with the signal processor unit;
An analog signal acquisition unit 115 for simultaneously sampling the voltage and current instantaneous values of the analog signal channel and converting them into a digital code value;
A voltage and current instantaneous value of the power system which is an output of the analog signal acquisition section and measures a power system operation function of voltage, current, power, reactive power and frequency from voltage and current instantaneous values, A system state measurement unit 120 for performing phasor measurement of voltage and current, power, phase and power factor measurement using voltage and current phasors, and frequency measurement;
An earthquake output signal acquisition unit 125 for acquiring an analog output signal of the XYZ signal of the earthquake detection sensor and simultaneously sampling and converting the analog output signal to a digital code value;
A digital signal acquisition unit 130 for simultaneously sampling the contact signals of the respective seismic signals and the digital signal channels to convert them into logic values and eliminating the effects of contact chattering and noise;
A facility state measuring unit 135 for evaluating the state of the electric power facility represented by the earthquake signal and the digital logic signal acquired by the digital signal acquisition unit;
A power monitoring unit 140 for sampling the breaker operation indication contact and the power level detector output signal at the same time and converting them into a logic value;
An activation unit 145 for evaluating the state of the power system and the state of the electric power facility to log data and generate a start signal if the system is in a fault or abnormal state;
A memory unit 150 which operates upon receipt of a start signal of the starter unit and stores power system state measurement data according to a set file format for a set time before and after an event;
A digital signal output unit 155 that operates upon receipt of a start signal and generates an event signal corresponding to the start mode and the type and the cause of the start;
A recording unit 160 for continuously monitoring a seismic sensing state and a system state monitoring and setting data stored in the memory unit;
The data file stored in the recording unit is called to reproduce the seismic monitoring value, the instantaneous value, the effective value or the data of the pager and the waveform and the equipment condition and the event on the same time axis, and the frequency spectrum analysis and the frequency spectrum of the effective value And an analysis unit (165) for performing the analysis of the fault.
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