KR102002461B1 - Apparatus for monitoring and analyzing electrical power system having multiple processing structure - Google Patents

Abstract

Provided is a system accident monitoring and analysis device having a multiprocessing structure. The system accident monitoring and analysis device having a multiprocessing structure comprises: a first signal input/output module for receiving an analog signal and an event signal measured in a system; a second signal input/output module for receiving measurement data of a pager measurement unit (PMU) disposed in the system; a monitoring control module including a first processor configured to perform calculation for comparing and analyzing information on analog signals, event signals, and measurement data inputted into the first signal input/output module and the second signal input/output module so as to monitor the state of the system; an information control module including a second processor configured to perform calculation for sampling the information on the analog signals, the event signals, and the measurement data inputted into the first signal input/output module and the second signal input/output module, and transmit a trigger signal when an abnormal state of the system is detected; a recorder module operating by the trigger signal and recording the sampled data as a COMTRADE type accident file; and a power module supplying operating power to the first signal input/output module, the second signal input/output module, the monitoring control module, the information control module, and the recorder module. Thus, efficient monitoring of power system accidents and rapid recording of accident conditions can be possible.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for monitoring and analyzing a system having multiple processing structures,

The present invention relates to a systematic accident monitoring and analyzing apparatus capable of monitoring a power system in real time by PMU data synchronized with GPS time and storing and analyzing fault related data when a system fault occurs, And more particularly, to a system fault monitoring and analyzing apparatus having a multi-processing structure that can operate more efficiently and accurately analyze accidents.

The power system consists of all facilities related to power generation and operation such as power generation facilities, transmission and distribution facilities, and substation facilities. As the industrial power generation and power consumption increase, the capacity of power generation facilities and substation facilities is increasing, and the stability and quality improvement of production power are continuously required. However, the increase of facility capacity has a great impact on power generation and supply It is not easy to satisfy such a demand.

Therefore, it is required to develop a technology capable of preventing system accidents from being monitored more precisely, or capable of quickly coping with an accident. Unlike mechanical systems, power system accidents can be difficult to see easily on the appearance, and accident types can be kept in time or in the form of rules or irregular disturbances. Also, And it is very difficult to appropriately grasp and prepare in a general manner for various reasons.

For example, a technique for collecting and transmitting system data for monitoring a power system has been disclosed. However, it is generally used for improving the operation efficiency of a facility in a normal operation state, It is difficult to recognize the accident, to provide comprehensive data capable of accident analysis, and to accurately read the accident situation therefrom. Therefore, it was necessary to develop more appropriate technology for monitoring and analyzing accident situation.

Korean Patent Registration No. 10-0832324, (May 26, 2008)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a systematic accident monitoring and analyzing apparatus having a multiple processing structure that can operate more efficiently with a multiple data processing structure and perform accurate incident analysis.

The technical problem of the present invention is not limited to the above-mentioned problems and other technical problems which are not mentioned can be clearly understood by those skilled in the art from the following description.

The system for monitoring and analyzing a system having a multi-processing structure according to the present invention includes: a first signal input / output module including a plurality of first input / output terminals receiving analog signals and event signals measured in a system; A second signal input / output module including at least one second input / output terminal receiving measurement data of a phaser measurement unit (PMU) arranged in the system; And a first processor for performing an operation of monitoring the state of the system by comparing and analyzing information of the analog signal, the event signal, and the measurement data input to the first signal input / output module and the second signal input / output module Monitoring control module; Outputting a trigger signal when the abnormal state of the system is detected by sampling the information of the analog signal, the event signal, and the measurement data input to the first signal input / output module and the second signal input / output module, An information control module including two processors; A recorder module operating in response to the trigger signal and recording data sampled by the information control module in an accident file of a COMTRADE format; And a power module for applying operating power to the first signal input / output module, the second signal input / output module, the monitoring control module, the information control module, and the recorder module.

The first processor and the second processor can extract and process state information including voltage, current, power, frequency, and synchronous pager information of the system from the analog signal, the event signal, and the measurement data have.

An abnormal state of the system can be detected from the state information by at least one of the first processor and the second processor.

Wherein at least one of the first processor and the second processor determines whether at least one of voltage, current, power, and frequency of the status information reaches a set upper limit value or decreases to reach a set lower limit value So that the abnormal state can be detected.

Wherein at least one of the first processor and the second processor calculates a rate of change per one cycle of at least one of voltage, current, and power in the status information, and when the rate of change is equal to or greater than a predetermined reference change rate So that the abnormal state can be detected.

At least one of the first processor and the second processor may detect the abnormal state by performing an operation of determining whether the magnitude of variation in power per unit time of the state information exceeds a set reference variation width.

Wherein the second processor records at least one of a start time and an end time of the operation of the recorder module and an interval between the start time and the end time of the recorder module with the trigger signal, can do.

And a GPS module for providing time information for time synchronization of the measurement data measured at different points in the system.

The first processor recalculates the fluctuation conditions of the voltage and the current of the system recorded in the accident file and compares the trends of the fluctuations between the different phases to distinguish the short-circuit and ground fault of the system have.

Wherein the first processor performs at least one of an operation of analyzing the waveform and size of harmonics recorded in the accident file and an operation of comparing and displaying a plurality of pieces of information recorded in the accident file to compare them, Can be read.

According to the present invention, it is possible to efficiently monitor power system accidents and record accident situations quickly, and to cope effectively with systematic accidents through accurate analysis of accident situations. In particular, the data processing structure of the apparatus in which system related data is stored, monitored, and analyzed is formed into a multi-structure structure and efficiently linked with each other, thereby enabling more effective and quick monitoring and analysis of systematic accidents. By applying such an apparatus of the present invention to various power systems, it is possible to smoothly cope with system conditions varying in real time and cope with power system related accidents smoothly through an accurate analysis process.

1 is a block diagram showing a configuration of a systematic accident monitoring and analyzing apparatus having a multiple processing structure according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram for explaining a data processing process of the systematic accident monitoring and analyzing apparatus of FIG. 1. FIG.
3 is a diagram illustrating a rear terminal configuration of the systematic accident monitoring and analyzing apparatus of FIG.
4 is a diagram showing an example in which an accident file stored in a recorder module is outputted as a graph.
5 is a diagram showing an example of outputting a harmonic analysis process of the monitoring control module on a screen.
FIG. 6 is a view illustrating an example in which a process of comparing and displaying different trends of changes in voltage and current of the monitoring control module is displayed on a screen.
7 is a diagram illustrating a variation in voltage and current angle phase recorded in an accident file when an accident of the monitoring control module is read.
8 to 11 are diagrams for explaining an accident reading method of the monitoring control module.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is only defined by the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a systematic accident monitoring and analyzing apparatus having a multiple processing structure according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 11. FIG.

FIG. 1 is a block diagram showing a configuration of a systematic accident monitoring and analyzing apparatus having a multiple processing structure according to an embodiment of the present invention. FIG. 2 is a flowchart illustrating a data processing procedure of the systematic accident monitoring and analyzing apparatus of FIG. FIG. 3 is a diagram illustrating a rear terminal configuration of the systematic accident monitoring and analyzing apparatus of FIG. 1. FIG.

1 to 3, the systematic accident monitoring and analyzing apparatus 1 having a multi-processing structure according to the present invention is configured to receive and process various data measured in a power system (hereinafter referred to as a system). The data includes analog signals measured in the system (which may be continuously varying signals such as current and voltage values), event signals (including contact variation signals, and various types And measurement data of a phaser measurement unit (PMU), and these various data are transmitted to the monitoring control module 30 and the information control module 40 having different central processing units Processing structure. In particular, a processing structure (monitoring control module 30 and related structure) for monitoring and analyzing systematic data that is always collected in real time, and an information control structure for managing the creation, storage, The control module 40 and the related structure] are configured in parallel and linked with each other to quickly grasp the situation of the system that is rapidly changing in real time and cope with the accident effectively.

The systematic accident monitoring and analyzing apparatus 1 having a multiple processing structure according to the present invention is constructed as follows. A systematic accident monitoring and analysis apparatus (1) having a multiple processing structure includes a first signal input / output module (10) including a plurality of first input / output terminals (10) for receiving analog signals and event signals measured in a system, A second signal input / output module 20, a first signal input / output module 10 and a second signal input / output module 20 including at least one second input / output terminal receiving measurement data of a phaser measurement unit (PMU) A monitoring and control module 30, a first signal input / output module 10, and a second signal input / output module 30 including a first processor 310 for performing an operation of monitoring the state of the system by comparing and analyzing information of the analog signal, Outputting a trigger signal when an abnormal state of the system is detected by performing an operation of sampling information of an analog signal, an event signal, and measurement data input to the second signal input / output module 20, and a second processor 410 The control module 40, A recorder module 50 for recording data sampled by the information control module 40 in a COMTRADE format as an accident file, and a first signal input / output module 10, a second signal input / output module 20, A monitoring control module 30, an information control module 40, and a power module 60 for applying operating power to the recorder module 50. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure and effects of the present invention will be described in detail with reference to the drawings.

The first signal input / output module 10 and the second signal input / output module 20 may each include a plurality of signal input / output terminals. As shown in FIG. 1, the first signal input / output module 10 includes a plurality of first input / output terminals 110, and receives analog signals and event signals measured in the system. The first input / output terminal 110 may include an analog signal input terminal and an event signal input terminal, which may be arranged on the back surface of the apparatus as shown in FIG. (Which may be continuously varying currents, voltage values, etc., as described above) collected at various different locations on the system through a plurality of first input / output terminals 110 as shown and a variety of different locations on the system Can be input to the systematic accident monitoring and analyzing apparatus 1 having a multi-processing structure in real time as the event signal (which may be a signal generated according to the state change of the facility as described above) Although not shown, a cable for data transmission is connected to each first input / output terminal 110 and connected to a data collection device formed on the system, so that various signals collected in the system can be inputted easily.

The second signal input / output module 20 may also include a plurality of signal input / output terminals including the second input / output terminal 210. At least one second input / output terminal 210 may be formed, and measurement data of a phasor measurement unit (PMU) disposed in the system may be input through the second input / output terminal 210. Although not shown, a plurality of phaser measurement units may be installed at different points on the system to generate pager information (information on the state vector of each point) at each installation point in real time and transmit the information. Such pager information may be converted into synchronous phaser synchronized information after time error is corrected using the time information of the GPS module (not shown). The measurement data input to the second input / output terminal 210 may be pager information or synchronous phaser information. When pager information is input, the measurement data may be converted into synchronous phaser information using the time information of the GPS module.

Since the synchronous phaser information is measured at different points on the ground surface, the time error of the pager information having the relative time error is corrected, and the information is matched to provide the status information of the entire system to the synchronized time. Therefore, The situation can be grasped and monitored. In other words, it is possible to synchronize the power situation to different points of the system from the synchronous pager information, and more accurate and detailed monitoring of the system situation can be performed through continuous collection of the systematic data including the same. The second signal input / output module 20 may further include a second signal input / output terminal receiving a signal of the GPS module in addition to the second input / output terminal 210 receiving measurement data of the phaser measurement unit, The cable for data transmission can be connected and connected to the pager measuring unit and the GPS module. Although not shown in the drawings, the systematic accident monitoring and analyzing apparatus 1 having a multiple processing structure includes a GPS module (not shown) for providing time information for time synchronization of measurement data measured at different points in the system .

The monitoring control module 30 compares and analyzes the information of the analog signal, the event signal, and the measurement data input to the first signal input / output module 10 and the second signal input / output module 20 to monitor the state of the system The first processor 310 includes a first processor 310 and a second processor 310. The first processor 310 corresponds to a kind of central associating device that performs an operation by driving a program stored in an embedded program or another device, and the supervisory control module 30 is composed of an independent module including such a central processing unit. The first processor 310 may execute an embedded program or a program of the program storage device to perform an operation related to system monitoring and accident analysis. Although not shown, the supervisory control module 30 may include a storage device that stores a program that the first processor 310 drives.

The information control module 40 performs an operation for sampling the information of the analog signal, the event signal, and the measurement data input to the first signal input / output module 10 and the second signal input / output module 20, And a second processor 410 for transmitting a trigger signal when a state is detected. The second processor 410 also corresponds to a kind of central processing unit that performs an operation by driving a program stored in a built-in program or another apparatus, and the information control module 40 is configured as an independent module including the same. The information control module 40 may include a storage device for storing a program that the second processor 410 drives. That is, the monitoring control module 30 and the information control module 40 are formed so as to perform independent operations in parallel, including independent central processing units.

Sampling of the information control module 40 means an operation of extracting and storing instantaneous values at successive time intervals from successive values. As the sampling time interval becomes shorter, more data is generated at the same time, which can greatly improve the accuracy of system monitoring and accident analysis. In particular, the information control module 40 may perform the sampling operation at all times by using the second processor 410 independent of the first processor 310, reduce the sampling period, and perform the operation at a high speed. Thus, it is possible to generate and store continuous changes in the system information substantially without error. In particular, the information about the continuous change of the system current and the voltage value is also processed through the high-speed sampling process performed by the second processor 410 independent of the first processor 310, so that the information can be stored and analyzed without any substantial error.

On the other hand, the first processor 310 of the supervisory control module 30 independently compares the information of the input data to monitor the state of the system. Particularly, since the first processor 310 can check and analyze status information of different points of the system in real time through the operation of comparing and analyzing the synchronous pager information of the measurement data described above, Real-time monitoring can be performed very smoothly for the entire system. Also, since the monitoring and control module 30 can read systematic accidents very clearly by using the stored accident file as described later, even if an accident occurs in the system, the monitoring and control module 30 can cope effectively. The accident reading process of the monitoring control module 30 will be described later in more detail.

The first processor 310 of the supervisory control module 30 and the second processor 410 of the information control module 40 receive the voltage, current, power, frequency, and frequency of the system from the analog signals, event signals, And status information including synchronous pager information can be extracted and processed. In addition to the voltage and current measurements, each processor can be used for system monitoring and analysis by generating various status information that can more accurately reflect the state of the power, frequency, and system. The state information may include the apparent power of the system, the active power, the reactive power, and the frequency information, which may be computed using a program embedded in each processor or driven by each processor. The monitoring and analysis of the system can be performed more accurately by utilizing the various status information. Various monitoring and analysis processes using the status information will be described in more detail later.

The recorder module 50 operates according to the trigger signal transmitted from the second processor 410, and records the data sampled by the information control module 40 as an accident file of the COMTRADE format. The recorder module 50 may be in a kind of dormant state until receiving the trigger signal, and may be activated for a predetermined time by the trigger signal to generate an accident file. The trigger signal is a signal for controlling the operation of the recorder module 50 using the second processor 410, and the recorder module 50 can be operated by this trigger signal. The accident file can be stored in the recorder module 50 as a COMTRADE format file, which is a file format capable of storing systematic data and related waveforms, and can be very useful for accidental reading. The recorder module 50 may be, for example, a data storage including a large capacity hard disk, and may operate by a trigger signal to record and store an accident file on a hard disk device or the like.

That is, the information control module 40 can operate the recorder module 50 only at a necessary time by transmitting a trigger signal when an abnormal state of the system is detected. Particularly, since data of the system is processed on both sides of the first processor 310 and the second processor 410, the state information can be obtained from at least one of the first processor 310 and the second processor 410, An abnormal state can be detected. For example, the second processor 410 of the information control module 40 can transmit the trigger signal immediately when an abnormal state is detected during the process of processing the status information, and the first processor 310 may be configured to send the trigger signal to the second processor 410 by sharing the abnormal state with the information control module 40 during the process of processing the state information. Hereinafter, the present invention will be described on the basis of a configuration in which the information control module 40 transmits a trigger signal by sensing an abnormal state on the side of the monitoring control module 30 and sharing the information with the information control module 40 side.

The power module 60 applies operating power to the first signal input / output module 10, the second signal input / output module 20, the monitoring control module 30, the information control module 40, and the recorder module 50 . The power module 60 can be supplied with external power through a power input terminal or the like, and can be converted into operating power through a transformer or the like and applied to each module. The power module 60 is a single module in a modular form such as a first signal input / output module 10, a second signal input / output module 20, a monitoring control module 30, an information control module 40, a recorder module 50, And may be coupled to the housing. The recorder module 50 may be integrated with other modules in a single housing, but may be separately disposed in a separate housing to increase storage capacity. Hereinafter, the detailed operation process of the above-described monitoring control module 30, the information control module 40, and the recorder module 50 will be described in more detail.

First, the process of detecting the abnormal state of the system and the operation of the recorder module using the trigger signal will be described in more detail.

As described above, the abnormal state of the system can be detected from the state information of the system by at least one of the first processor 310 and the second processor 410. [ At least one of the first processor 310 and the second processor 410 determines whether at least one of the voltage, current, power, and frequency of the status information reaches the set upper limit value or decreases to reach the set lower limit value It is possible to detect an abnormal state by performing an operation for discriminating whether or not it is abnormal. That is, when the upper limit value and the lower limit value are set to at least one of voltage, current, active power, reactive power, and frequency, and the value is increased or decreased from the reference value and reaches the upper limit value or the lower limit value. For example, an upper limit value is set to a value between 100.0 and 999.9% of a reference value (which may be a steady state value) with respect to a voltage, and a lower limit value is set to a value between 0 and 100.0% of a reference value to reach an upper limit value or a lower limit value The abnormal state can be determined. It is also possible to set the upper limit value to a value between 100.0 and 999.9% of the reference value (which may be the value of the steady state) with respect to the current, and to judge the abnormal state when reaching the upper limit value. It is also possible to determine an abnormal state when the upper limit value is set to a value between the rated frequency and 99.99 (Hz) for the frequency and the lower limit value is set to a value between 0 and the rated frequency (Hz) . At this time, the reference value, the upper limit value and the lower limit value of the voltage and the current may mean, for example, the amplitude of the alternating current. The abnormal state of the system can be detected through the processing of the state information of the processor.

At least one of the first processor 310 and the second processor 410 calculates a rate of change per one period of at least one of voltage, current, and power in the status information, It is possible to detect an abnormal state by performing an operation for discriminating the number of times larger than the size. That is, it is possible to calculate the rate of change of the state information value and detect the abnormal state more accurately through continuous comparison with the reference rate of change. For example, if the reference change rate for a voltage is set to 5% of a reference value per one cycle (which may be a steady state value), and the change rate is measured for at least three cycles, if the change rate is 5% . Further, the reference change rate with respect to the current is set to 5% of the reference value per one cycle (which may be the value of the steady state), and the rate of change is measured during at least three cycles. When the rate of change is more than 5% . Also, with respect to the active power and the reactive power, the reference change rate is set to 5% of the reference value (which may be a steady state value), and the change rate is measured for at least three cycles. When the number of times the change rate is 5% can do. In this case, the reference value of the voltage and current may mean, for example, the amplitude of the alternating current, and the rate of change and the reference rate of change may mean the rate of change of amplitude per cycle. The rate of change and the rate of change of the reference can be compared when the magnitude (absolute value) is compared but the sign (positive or negative) of the rate of change is matched. The value of the reference change rate can be appropriately adjusted in accordance with the kind of the data and the change state thereof and the strength of the determination can be appropriately adjusted by increasing or decreasing the number of times of comparison between the reference change rate and the change rate. Thus, the abnormal state of the system can be detected through the processing of the state information of the processor.

At least one of the first processor 310 and the second processor 410 determines whether or not the magnitude of fluctuation of the power per unit time in the state information exceeds the set reference fluctuation width to detect an abnormal state It is possible. For example, the reference fluctuation per unit time of the active power or the reactive power may be set to 8% of the reference value (which may be a value of the steady state), and the abnormal state may be determined when the measured fluctuation exceeds this range. The value of the reference fluctuation width can also be appropriately increased or decreased to appropriately adjust the strength of the judgment. In this manner, the computing module can perform an operation of determining at least one variation state of the measurement data and the state data in various ways, so that the abnormal state can be detected very accurately. It is possible to perform any one of the operations as described above or to duplicate two or more associations with the computing module, thereby making it possible to more effectively determine the accident situation by appropriately changing the determination criteria of the abnormal state. Thus, the abnormal state of the system can be detected through the processing of the state information of the processor.

If an abnormal state is detected, the second processor 410 transmits a trigger signal to operate the recorder module 50 as described above. Accordingly, an accident file is generated and recorded in the recorder module 50, and the system accident can be read more accurately by using the recorded accident file. Accidents occurring in the system can be read very accurately through a series of comparative analyzes performed by the first processor 310 of the monitoring and control module 30. That is, as shown in FIG. 2, the supervisory control module 30 and the information control module 40, which are configured to perform independent operations simultaneously with independent processors, can more effectively monitor systematic accidents and accurately Can be analyzed and coped with.

The second processor 410 may record at least one of the start and end points of the operation of the recorder module 50 and the intervals between the start point and the end point of the recorder module 50 as the trigger signal . That is, the trigger signal is not a simple operation signal and has a function of adjusting the recording range of an accident file generated by the recorder module 50. [ The recorder module 50 can store not only the instantaneous waveform but also the entire motion record due to the abnormal state as an accident file. For example, in the case of the instantaneous waveform, 0.1 to 3 seconds before the abnormal state detection, 0.1 to 20 seconds Within the range from 1 to 10 seconds before the detection of the abnormal condition and 1 to 20 minutes after the detection from the detection of the abnormal condition in the case of the fluctuation recording, have. This makes it possible to clearly record the situation before and after the accident and to read the accident more accurately. The accident file can be recorded in the COMTRADE file format, which can store the collected systematic data and related waveforms as described above. By analyzing and analyzing systematic accidents by recording and storing the change status in the form of COMTRADE file capable of simulating actual system, The reading process can also proceed very smoothly.

Hereinafter, a systematic accident analysis process using an accident file of the monitoring control module will be described in more detail.

FIG. 4 is a diagram showing an example of outputting an accident file stored in the recorder module as a graph, FIG. 5 is a diagram showing an example of outputting a harmonic analysis process of the monitoring control module as a screen, FIG. 7 is a view showing an example of outputting a screen showing a process of comparing and displaying different phase change trends of voltages and currents of a voltage and a current of the monitoring control module, FIGS. 8 to 11 are views for explaining an accident reading method of the monitoring control module. FIG.

The incident file may, for example, include a record of the state information change situation as illustrated in FIG. The monitoring control module 30 accesses the accident file recorded in the first recorder module 50 through the analysis program loaded in the first processor 310 or embedded in the first processor 310 or stored in the first processor 310, Contents can be provided in graph form. In the accident file, the voltage fluctuation state of each phase, the current fluctuation condition, the fluctuation condition of the apparent power and the active power, the fluctuation condition of the reactive power, etc., are detected at the abnormal condition detection point (corresponding to the trigger point indicated by the vertical dotted line in FIG. Clearly recorded before and after. However, the contents recorded in the accident file are not limited thereto and may include other information. The first processor 310 may perform an operation to analyze systematic incidents from various information recorded in the accident file using an analysis program. The analysis program may, for example, provide the synchronous phaser information as a state vector, provide an arithmetic value such as a maximum value, a minimum value, or an average value of each voltage and current value, or calculate the distance to the accident point by the input formula Analyzing harmonics, or displaying waveforms of different phases over and over and comparing them.

For example, the first processor 310 may perform operations to display and analyze the waveform and magnitude of the harmonics, as shown in FIG. Information about harmonics can be provided in the form of a graph or in the form of text. Using the harmonic analysis function of the analysis program, harmonics above 63 harmonics can be analyzed and the result can be provided. Also, for example, the first processor 310 may include a plurality of pieces of information recorded in the incident file as shown in FIG. 6 (for example, a variation trend of at least one of voltage and current of the system ) May be displayed so as to be compared with each other. Especially, these comparison operations are very useful for reproducing the voltage and current fluctuation situation and comparing the trends between the different phases so as to distinguish and read the system short circuit and ground fault.

That is, through the calculation process of the first processor 310, it is possible to very clearly distinguish between short-circuit and ground-fault accidents. The first processor 310 can reproduce the fluctuation conditions of the voltage and the current of the system recorded in the accident file and compute the fluctuation trends between the different phases so that the short circuit and the ground fault of the system can be classified and read . For example, as shown in FIG. 7, the analysis program described above may be operated to access a specific accident file, and a record of the variation trend of the voltage and the current angle may be inputted and compared. This makes it possible to read very clearly different types of accidents, for example, 1-wire ground fault, 2-wire ground fault, 2-wire short fault and 3-wire short fault. The reading process will be described in more detail with reference to FIGS. 8 to 11. FIG.

For example, when the voltage Va of one phase decreases, the current Ia increases, and the neutral line current In increases, as shown in FIG. 8, By comparing these changes in voltage and current value, it can be read out by a 1-wire ground fault that is short-circuited through the neutral line. 9, when the voltages Vb and Vc of the two phases decrease and the currents Ib and Ic increase and the neutral line current In increases, the first processor 310 By comparing these changes in voltage and current values at the same time, they can be read by a 2-wire ground fault that is shorted through the neutral line. As shown in FIG. 10, when the voltages Vb and Vc of the two phases decrease and the currents Ib and Ic of the phase increase, but the neutral line current In does not exist or is insignificant, the first processor 310 By comparing these changes in voltage and current values at the same time, the BC phase can be read in a short-circuited two-wire short-circuit accident. 11, when the three phase voltages Va, Vb and Vc are all decreased and the three phase currents Ia, Ib and Ic are increased but the neutral line current In is not or only insignificant, The processor 310 can read the entire 3-wire short circuit accident by comparing the voltage and current value changes at the same time. Such an accidental reading is very clearly obtained from the accident file as shown in FIG. 7 through the above-described calculation process of the first processor 310. [ Therefore, it is possible to read the state of the accident very clearly by using the systematic accident monitoring and analyzing apparatus having the multi-processing structure of the present invention, and it is possible to respond very effectively and quickly according to the type of systematic accident.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Systematic accident monitoring and analysis system with multiple processing structure.
10: first signal input / output module
20: second signal input / output module
30: Monitoring control module
40: Information control module
50: Recorder module
60: Power module
110: first input / output terminal
210: second input / output terminal
310: a first processor
410: second processor

Claims (10)

A first signal input / output module including a plurality of first input / output terminals receiving analog signals and event signals measured in the system;
A second signal input / output module including at least one second input / output terminal receiving measurement data of a phaser measurement unit (PMU) arranged in the system;
And a first processor for performing an operation of monitoring the state of the system by comparing and analyzing information of the analog signal, the event signal, and the measurement data input to the first signal input / output module and the second signal input / output module Monitoring control module;
Outputting a trigger signal when the abnormal state of the system is detected by sampling the information of the analog signal, the event signal, and the measurement data input to the first signal input / output module and the second signal input / output module, An information control module including two processors;
A recorder module operating in response to the trigger signal and recording data sampled by the information control module in an accident file of a COMTRADE format; And
Output module, the second signal input / output module, the monitoring control module, the information control module, and the power module for applying operating power to the recorder module,
The first processor and the second processor extract and process status information including voltage, current, power, frequency, and synchronous phaser information of the system from the analog signal, the event signal, and the measurement data,
An abnormal state of the system is detected from the state information by at least one of the first processor and the second processor, the monitoring control module analyzes the systematic accident using the accident file,
The first processor performs an operation of reproducing the fluctuation conditions of the voltage and current of the system recorded in the accident file and comparing the fluctuation trends between different phases,
If the voltage of one phase decreases, the current of the phase increases, and the neutral current increases,
The voltage of two phases decreases, the current of the phase increases, and the neutral line current increases. In the case of a 2-wire ground fault,
If the voltage of two phases decreases and the current of the phase increases, but there is no or little neutral line current,
If the three phase voltages are all decreased and the three phase currents are increased but there is no or little neutral current,
A systematic accident monitoring and analysis apparatus having a multiple processing structure that reads out and discriminates short-circuit and ground-fault accidents of the system. delete delete The method according to claim 1,
Wherein at least one of the first processor and the second processor determines whether at least one of voltage, current, power, and frequency of the status information reaches a set upper limit value or decreases to reach a set lower limit value And a multiprocessing structure for detecting the abnormal state by performing an operation for discriminating a fault. The method according to claim 1,
Wherein at least one of the first processor and the second processor calculates a rate of change per one cycle of at least one of voltage, current, and power in the status information, and when the rate of change is equal to or greater than a predetermined reference change rate And a plurality of processing structures for detecting the abnormal state. The method according to claim 1,
Wherein at least one of the first processor and the second processor performs a multiprocessing structure for detecting the abnormal state by performing an operation of determining whether a magnitude fluctuation of power per unit time of the power exceeds a set reference fluctuation width Systems for monitoring and analyzing system accidents. The method according to claim 1,
Wherein the second processor records at least one of a start time and an end time of the operation of the recorder module and an interval between the start time and the end time of the recorder module with the trigger signal, System monitoring and analysis system with multiple processing structure. The method according to claim 1,
Further comprising a GPS module for providing time information for time synchronization of the measurement data measured at different points in the system. delete The method according to claim 1,
The first processor performs at least one of an operation of analyzing the waveform and size of harmonics recorded in the accident file and an operation of displaying and comparing a plurality of pieces of information recorded in the accident file, Fault monitoring and analysis system with multiple processing structures for reading.

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