JP2010273527A - Automatic oscillograph apparatus, waveform data server device, and automatic oscillograph system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic oscillograph apparatus capable of transmitting waveform data which selects the waveform data required to analyze a trouble when an electric trouble occurs, transmits the same preferentially, and distinguishes the waveform data of a trouble circuit at a receiving side easily. <P>SOLUTION: A precedence decision unit 46 determines precedence of the waveform data stored in a memory 43 by a precedence decision condition based on startup detection by a startup detector 44. A transmitter 47 adds precedence information which is a result determined by the precedence decision unit 46 to a header of the waveform data and transmits the waveform data with higher precedence among the waveform data stored in the memory 43 to a waveform data server device ahead of other waveform data based on the precedence information. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an automatic oscillograph device, a waveform data server device, and an automatic oscillograph system. Specifically, the automatic oscillograph device, waveform data server device, and automatic oscillograph system are installed for each section of a transmission line and measure the voltage and current of the transmission line. The present invention relates to efficiency improvement of electrical accident analysis by improving waveform data recording method and transmission method of automatic oscillograph device that stores waveforms.

  The conventional automatic oscillograph has a function of starting and storing waveform data when the voltage of the transmission line is lowered, when the current is increased, and when an accident detection relay installed in an electric station is operated, and stores waveform data Some have a function to transmit and a function to transmit stored waveform data. Among these, the automatic oscillograph device having a transmission function was mainly installed only on a highly important transmission line having a large transmission capacity, but with the spread of the device, a transmission line having a lower voltage class and a smaller transmission capacity. It is also becoming installed. Waveform data stored in this automatic oscillograph is mainly transmitted to manned electric stations such as control centers, construction offices, and power centers, or power system management departments and track maintenance departments (hereinafter referred to as data analysis departments). An electrical accident analysis has been conducted. The main purpose of this electrical accident analysis is to verify whether or not the accident detection relay installed at the electric station operates correctly and the transmission system is properly shut off and protected when the accident occurs.

  However, the phenomenon when the voltage of the transmission line drops is wide ranging from the ultra high voltage system to the low voltage system, and many automatic oscillograph devices are activated, and many waveform data are transmitted to the data analysis department. Not only is the line congested and the transmission of important data delayed, but the analyst spends wasted time selecting data to be analyzed.

  As a conventional first automatic oscillograph, the waveform data of the accident part is recorded at a normal sampling frequency, and the waveform data part other than the accident part (after the accident is finished) is recorded at a low sampling frequency. A method for reducing the memory capacity for storing waveform data and shortening the transmission time has been proposed (see, for example, Japanese Patent Laid-Open No. 5-346443 (Patent Document 1)).

  In addition, as a conventional second automatic oscillograph device, when one automatic oscillograph device is activated, it receives another activation signal and is connected to a LAN (Local Area Network). There has been proposed a control device that activates an automatic oscillograph and reliably collects data necessary for analysis (see, for example, Japanese Patent Publication No. 7-118871 (Patent Document 2)).

  However, in these conventional first and second automatic oscillograph devices, a large number of automatic oscillograph devices operate simultaneously in the event of a power system failure and begin to transmit a large amount of waveform data. The effect of reducing the burden on data analysts is not sufficient.

  Hereinafter, data collection by the automatic oscillograph apparatus when an electrical accident occurs on the transmission line will be described.

  FIG. 1 shows an installation example of a power transmission system and an automatic oscillograph device. In FIG. 1, T1 is a transformer installed at a power transmission side substation, L1 is a bus of a power transmission side substation connected to the transformer T1, La Is a bus of the power receiving side substation A connected to the bus L1 via power transmission lines L11 and L12, Lb is a bus of the power receiving side substation B connected to the bus L1 via power transmission lines L21 and L22, Lc Is a bus of the power receiving side substation C connected to the bus L1 via power transmission lines L31 and L32. Circuit breakers CB11 to CB14 are connected to both ends of the transmission lines L11 and L12, respectively, and current transformers CT11 and CT12 are disposed on the power transmission side substation side of the transmission lines L11 and L12. Moreover, circuit breakers CB21 to CB24 are connected to both ends of the transmission lines L21 and L22, respectively, and current transformers CT21 and CT22 are disposed on the power transmission side substation side of the transmission lines L21 and L22. In addition, circuit breakers CB31 to CB34 are respectively connected to both ends of the transmission lines L31 and L32, and current transformers CT31 and CT32 are disposed on the power transmission side substation side of the transmission lines L31 and L32. A voltage divider PD (Potential Divider) for detecting the voltage of the bus L1 is disposed at the power transmission side substation.

  Then, a signal representing the bus voltage from the voltage divider PD is input to the automatic oscillograph device 1, and a signal representing the current of the power transmission lines L11 and L12 from the current transformers CT11 and CT12 is input. A signal representing the bus voltage from the voltage divider PD is inputted to the automatic oscillograph device 2, and a signal representing the currents of the transmission lines L21 and L22 from the current transformers CT21 and CT22 is inputted to the automatic oscillograph device 2. A signal representing the bus voltage from the voltage divider PD is input to the automatic oscillograph device 3, and a signal representing the current of the power transmission lines L31 and L32 from the current transformers CT31 and CT32 is input to the automatic oscillograph device 3.

  When an electrical accident occurs in the power transmission system shown in FIG. 1 (for example, a ground fault in the transmission line L11), the voltage drop simultaneously affects the entire power transmission system. The graph devices 1, 2, and 3 all operate. In the power transmission system of FIG. 1, three automatic oscillograph devices 1, 2, and 3 operate. However, in an actual power transmission system, it is not uncommon to start dozens simultaneously. Even in that case, the waveform data actually required is only the waveform data of the automatic oscillograph 1 that monitors the voltage and current in the accident occurrence section. For this reason, it may be desirable to send the data with some priority, not as it is sent in the order in which the waveform data of the automatic oscillograph devices 1, 2, and 3 are recorded.

  Fault detection at a substation is performed by a protective relay, and the circuit breaker is operated by the relay contact signal to break the circuit. The operation command contact signal of the circuit breaker is automatically oscilloscoped through an auxiliary relay, etc. It is also input to the graph device. Therefore, when such a contact signal is input, it is easily considered that an accident has been detected and the data collected at that time is first transmitted as priority data.

  However, there are various types of protection relays in substations and the like, and it is not realistic to input all the state changes to the automatic oscillograph and record them. In practice, the final circuit breaker operation command contact signal and the like that have passed through a complicated relay logic circuit are often input. Therefore, even when the circuit breaker is opened manually, the contact point signal is input and the waveform data without change or intentionally interrupted is stored and transmitted. A large number of non-accident data are stored, and there is a problem that it takes time to search for valid data.

JP-A-5-346443 Japanese Patent Publication No.7-118871

  Therefore, the object of the present invention is to select waveform data necessary for accident analysis and transmit it preferentially when an electrical accident occurs, and to easily distinguish the waveform data of the accident line part on the receiving side. Is to provide an automatic oscillograph device capable of transmitting

  Another object of the present invention is that the data analyst can easily distinguish the waveform data of the accident part from the enormous waveform data received from the automatic oscillograph device, and can reduce the time required for the electrical accident analysis. It is to provide a server device and an automatic oscillograph system.

In order to solve the above problems, an automatic oscillograph device of the present invention is
An analog signal input unit to which at least one of a signal representing the voltage of the transmission line or a signal representing the current is input;
An operation signal input unit to which an operation signal representing an operation of an accident detection relay for detecting an accident of at least the power transmission line is input;
An A / D converter that samples and converts at least one waveform of the signal representing the voltage or the signal representing the current input to the analog signal input unit into sampling waveform data;
An analog signal activation detection unit that detects whether or not the change in the sampling waveform data converted by the A / D conversion unit satisfies a preset analog signal activation condition;
An operation signal activation detection unit for detecting whether or not a change in the operation signal input to the operation signal input unit satisfies a preset operation signal activation condition;
A storage unit for storing at least the sampling waveform data converted by the A / D conversion unit;
The analog signal activation detection unit detects that the change in the sampling waveform data satisfies the analog signal activation condition, or the operation signal activation detection unit detects that the change in the operation signal is the operation signal activation condition. Is detected, the data control unit for storing the sampling waveform data in the storage unit,
A priority determination unit that determines a priority of the sampling waveform data stored in the storage unit based on a priority determination condition based on the activation detection by the analog signal activation detection unit and the activation detection by the operation signal activation detection unit; ,
Priority information, which is a determination result by the priority determination unit, is added to the header of the sampling waveform data, and the priority among the sampling waveform data stored in the storage unit based on the priority information And a transmission unit that transmits high sampling waveform data to an external device before other sampling waveform data.

  Here, the signal indicating the voltage of the power transmission line includes a signal indicating the voltage of the bus of the electric station, and the electric station is a general term for a power station, a substation, a switching station or a conversion station constituting the power system. Is. Further, data obtained by sampling the operation signal input to the operation signal input unit in synchronization with the sampling waveform data may be stored in the storage unit.

  According to the above configuration, based on the activation detection by the analog signal activation detection unit and the activation detection by the operation signal activation detection unit, the priority determination unit determines the priority of the sampling waveform data stored in the storage unit as the priority determination condition. Judgment by The transmission unit adds priority information, which is a determination result by the priority determination unit, to the header portion of the sampling waveform data, and based on the priority information, out of the sampling waveform data stored in the storage unit The sampling waveform data having a higher priority is transmitted to an external device (such as a waveform data server device) prior to other sampling waveform data. In this way, it is possible to select and transmit preferentially the most important and necessary waveform data that is considered necessary for accident analysis when an electrical accident occurs, and to easily distinguish the waveform data of the accident part on the receiving side. Possible waveform data can be transmitted.

Moreover, in the automatic oscillograph device of one embodiment,
The priority determination condition of the priority determination unit is that the sampling waveform data stored in the storage unit is at least detected by both the analog signal activation detection unit and the operation signal activation detection unit, and the operation signal The order of priority is set so as to increase and decrease in the order of activation detection only by the activation detection unit and activation detection only by the analog signal activation detection unit.

  According to the above-described embodiment, at least the activation detection by both the analog signal activation detection unit and the operation signal activation detection unit, the activation detection by only the operation signal activation detection unit, and the analog signal activation for the sampling waveform data stored in the storage unit By using the priority determination condition set in the priority determination unit so that the priority order becomes higher and lower in the order of the activation detection only by the detection unit, it is activated at least by both the analog signal activation detection unit and the operation signal activation detection unit. Sampling waveform data at the time of detection, sampling waveform data when activation is detected only by the operation signal activation detection unit, and sampling waveform data when activation detection is detected only by the analog signal activation detection unit are transmitted by the transmission unit in this order. . Therefore, based on the activation factor, the sampling waveform data necessary for the accident analysis can be transmitted first.

Moreover, in the automatic oscillograph device of one embodiment,
A delay unit that outputs the sampling waveform data converted by the A / D conversion unit after being stored for a predetermined time;
The data control unit
When the activation is detected by at least one of the analog signal activation detection unit and the operation signal activation detection unit, the sampling waveform data from the delay unit is stored in the storage unit for a preset storage time.

  According to the above embodiment, the waveform data immediately before activation can be stored by storing the sampling waveform data from the delay unit in the storage unit set in advance at the time of activation detection.

Moreover, in the automatic oscillograph device of one embodiment,
The data control unit
While the sampling waveform data is stored in the storage unit, if there is activation detection again by at least one of the analog signal activation detection unit or the operation signal activation detection unit, the sampling waveform stored in the storage unit The storage time is repeatedly extended until the total storage time of data reaches a preset limit value.

  According to the above embodiment, when the activation is detected again during the storage of the sampling waveform data, the storage time is extended and the sampling waveform data is stored, thereby including the accident part continuously generated at intervals. Waveform data can be stored.

Moreover, in the automatic oscillograph device of one embodiment,
The signal representing the voltage of the transmission line is a signal representing a three-phase AC voltage,
A power failure detection unit that detects a power failure of the power transmission line when a signal representing the three-phase AC voltage of the power transmission line is equal to or less than a preset power failure detection value for all three phases;
A voltage recovery detection unit that detects voltage recovery of the power transmission line when the signal representing the three-phase AC voltage exceeds a predetermined recovery detection value after the power failure detection unit determines that there is a power failure. And
The data control unit
After detecting that the power outage detection unit is a power outage of the power transmission line, the sampling waveform data for a preset power outage storage time is stored in the storage unit and the process ends.
After the power failure detection unit detects that the power transmission line is out of power, the storage of the sampling waveform data in the storage unit is terminated, and then the voltage recovery detection unit detects voltage recovery of the power transmission line. The sampling waveform data for a preset voltage recovery storage time is stored in the storage unit.

  According to the above embodiment, the signal representing the three-phase AC voltage of the power transmission line falls below the preset power failure detection value for all three phases, and the power failure detection unit detects a power failure (all stops) of the power transmission line. Then, a data control part memorize | stores the sampling waveform data for the preset power failure memory | storage time in a memory | storage part, and complete | finishes. Next, when the signal representing the three-phase AC voltage of the transmission line exceeds the preset return detection value for all three phases and the voltage return detection unit detects the voltage return of the transmission line, the preset voltage return storage time Minute sampling waveform data is stored in the storage unit. As described above, after the sampling waveform data is temporarily stored in the storage unit when the transmission line is completely stopped, the sampling waveform data is stored in the storage unit when the voltage of the transmission line is restored. Even if the start detection by the analog signal start detection unit is continued when there is no voltage state that does not need to be continuously recorded, the sampling waveform data is not continuously stored, and at all necessary stops and voltage recovery Two waveform data can be stored.

Moreover, in the automatic oscillograph device of one embodiment,
A group information setting unit for setting group information obtained by dividing a plurality of input elements of the sampling waveform data into a plurality of groups for the sampling waveform data stored in the storage unit;
Based on the start detection by the analog signal start detection unit, the start detection by the operation signal start detection unit, and the group information set by the group information setting unit, from the sampling waveform data stored in the storage unit, the An extraction unit for extracting sampling waveform data corresponding to the input elements set for each group;
When the transmission unit transmits sampling waveform data with high priority among the sampling waveform data stored in the storage unit, the sampling waveform extracted by the extraction unit from sampling waveform data with high priority Transmit data.

  According to the above-described embodiment, when sampling waveform data having a high priority among the sampling waveform data stored in the storage unit is transmitted by the transmission unit, the group information setting unit sets the sampling waveform data having the high priority. Based on the group information thus extracted, the extraction unit extracts sampling waveform data corresponding to the input element set for each group, and transmits the extracted sampling waveform data. Thereby, it becomes possible to transmit only the sampling waveform data of the input elements related to the accident.

Moreover, in the automatic oscillograph device of one embodiment,
An activation signal output unit for outputting an activation signal to the outside at the time of activation detection by at least one of the analog signal activation detection unit or the operation signal activation detection unit;
An external activation setting unit configured to set whether to store the sampling waveform data in the storage unit based on an external input activation signal input from the outside.

  According to the above embodiment, the activation signal is output to the outside by the activation signal output unit when the activation is detected by at least one of the analog signal activation detection unit and the operation signal activation detection unit, while the external signal is input from the outside. By setting whether or not the sampling waveform data is stored in the storage unit by the external activation setting unit, it is possible to activate a plurality of automatic oscillograph devices in conjunction with each other.

In the waveform data server device of the present invention,
A waveform data server device that receives and stores sampling waveform data transmitted from any one of the automatic oscillograph devices, and distributes the sampling waveform data to a client device,
Based on the priority information added to the header portion of the sampling waveform data, sampling waveform data having a high priority is extracted from the sampling waveform data generated at substantially the same time, and the extracted sampling waveform data is A server-side display control unit for displaying a list on the client device in distinction from other sampling waveform data is provided. (However, “waveform data generated at approximately the same time” means a plurality of waveform data including data at the same sampling time point. For example, from 0 hours 10 minutes 10.5 seconds to 0 seconds 10 minutes 11.0 seconds Although the time at the head position is different from the data for 1 second, the time points from 0:10:11 to 11.5 seconds are common, so it is regarded as “waveform data generated at approximately the same time.” The same applies hereinafter.)

  According to the above configuration, based on the priority information added to the header of the sampling waveform data, the sampling waveform data having a high priority is extracted from the sampling waveform data generated at substantially the same time, and the extracted sampling The waveform data is distinguished from other sampling waveform data, and the server side display control unit displays a list on the client device. Thereby, the data analyst can easily distinguish the waveform data of the accident part from the received enormous waveform data, and the time required for the electrical accident analysis can be shortened.

In the waveform data server device of one embodiment,
An analog signal activation condition of the analog signal activation detection unit, an operation signal activation condition of the operation signal activation detection unit, and a priority determination condition of the priority determination unit for the automatic oscillograph device by operation from the client device A server-side condition setting unit for setting at least one of them.

  According to the above embodiment, the analog signal activation condition of the analog signal activation detection unit, the operation signal activation condition of the operation signal activation detection unit, and the priority determination are performed on the automatic oscillograph device by an operation from a client device. By providing a server-side setting unit for setting at least one of the priority determination conditions of the unit, it is possible to set conditions for the automatic oscillograph device from the waveform data server device side. Easy management.

In the waveform data server device of one embodiment,
A server-side priority determination unit that determines whether or not the priority information added to the header of the sampling waveform data is equal to or higher than a preset order;
When receiving the sampling waveform data determined by the server-side priority determination unit to have a priority higher than a preset order, the client device is notified that the sampling waveform data has been received, or A server-side transmission unit configured to transmit the sampling waveform data determined to have a priority higher than a preset order to the client device.

  According to the above embodiment, when the sampling waveform data determined by the server-side priority determination unit to have a priority higher than the preset order is received, the server-side transmission unit receives the sampling waveform data. Notify the client device. As a result, the client apparatus can know that the sampling waveform data having an arbitrary priority order has been received.

  Alternatively, when sampling waveform data whose priority is determined to be higher than or equal to the preset priority by the server-side priority determination unit is received, the server-side transmission unit determines that the priority is higher than or equal to the preset priority for the client device Transmit the sampled waveform data. As a result, sampling waveform data having an arbitrary priority order can be transmitted to the client device side.

In the automatic oscillograph system of the present invention,
Any one of the above automatic oscillograph devices;
Any one of the above waveform data server devices;
A data communication network in which the automatic oscillograph device and the waveform data server device are connected;
And a client device that is connected to the data communication network and communicates with the waveform data server device via the data communication network.

  According to the above configuration, the data analyst on the client device side can easily distinguish the waveform data of the accident part from the enormous waveform data received from the automatic oscillograph device, and the time required for the electrical accident analysis can be shortened.

In the automatic oscillograph system of the present invention,
An automatic oscillograph system including a plurality of any one of the above automatic oscillograph devices,
A time signal transmitter for receiving radio waves from GPS satellites and outputting a reference time signal synchronized with Coordinated Universal Time (UTC) and a reference 1 second pulse to the automatic oscillograph;
The automatic oscillograph device includes a clock unit that measures time based on the reference time signal from the time signal transmitter and the reference 1-second pulse.

  According to the above configuration, the timepiece unit of the automatic oscillograph device measures the time based on the reference time signal and the reference 1-second pulse from the time signal transmission device that receives the radio wave from the GPS satellite, thereby obtaining the reference time. The synchronized sampling waveform data can be stored in the automatic oscillograph device. Thereby, the electrical accident analysis of the waveform data from the automatic oscillograph device can be performed accurately.

In the automatic oscillograph system of one embodiment,
The reference time signal and the reference 1 second pulse from the time signal transmission device installed at a point where the radio wave from the GPS satellite can be received are input to the timepiece unit of the automatic oscillograph device via an optical fiber cable. And a time signal light conversion / distribution device having a correction unit for correcting the propagation delay time of the reference 1 second pulse in the optical fiber cable.

  According to the above-described embodiment, the reference time signal and the reference 1-second pulse from the time signal transmission device installed at the point where the radio wave from the GPS satellite can be received are transmitted via the optical fiber cable by the time signal light conversion / distribution device. Since the time is input to the clock unit of the automatic oscillograph, the reference time signal and the reference 1-second pulse supplied from the time signal transmitter are received even if the automatic oscillograph is installed in a place where radio waves from GPS satellites cannot be received. Can be distributed to automatic oscillograph devices. In addition, by correcting the propagation delay time of the reference 1 second pulse in the optical fiber cable by the correction unit of the time signal light conversion distribution device, an accurate reference 1 second pulse is automatically oscilloscoped regardless of the cable length of the optical fiber cable. Input to the clock unit of the graph device.

In the automatic oscillograph system of one embodiment,
The reference time signal and the reference 1 second pulse from the time signal transmission device are distributed to a plurality of the automatic oscillograph devices to synchronize the time of the clock unit between the automatic oscillograph devices.

  According to the above-described embodiment, the reference time signal and the reference 1-second pulse from the time signal transmission device are distributed to the plurality of automatic oscillograph devices, and the time of the clock unit between the automatic oscillograph devices is synchronized. The time synchronization of the sampling waveform data stored in the automatic oscillograph device can be performed. For example, the reference 1 second pulse is stored in correspondence with the sampling waveform data, and when the sampling waveform data is read, the position of the reference 1 second pulse on the time axis is adjusted and matched between the automatic oscillograph devices. Thus, time synchronization of the sampling waveform data can be performed accurately.

  As is clear from the above, according to the automatic oscillograph device of the present invention, waveform data necessary for accident analysis can be selected and transmitted preferentially at the occurrence of an electrical accident, and the waveform data of the accident line portion can be transmitted on the receiving side. An automatic oscillograph device that can transmit waveform data that can be easily distinguished can be realized.

  Further, according to the waveform data server device and the automatic oscillograph system of the present invention, the data analyst can easily distinguish the waveform data of the accident part from the enormous waveform data received from the automatic oscillograph device, so that the electric accident analysis can be performed. The time required can be shortened.

FIG. 1 is a diagram showing an installation example of a power transmission system and an automatic oscillograph device. FIG. 2A is an example of determining the priority of data based on the bus voltage waveform and the DC activation signal input. FIG. 2B is an example of determining the priority of data based on the bus voltage waveform and the DC activation signal input. FIG. 2C is an example of determining the priority of data based on the bus voltage waveform and the DC activation signal input. FIG. 2D shows an example of determining the priority of data based on the bus voltage waveform and the DC activation signal input. FIG. 3 is a diagram showing a recording example of an accident waveform repeated in a short time. FIG. 4 is an example of waveform recording when power transmission is stopped. FIG. 5 is a conceptual diagram of data grouping. FIG. 6 is a diagram showing a linked activation example in the case where a plurality of automatic oscillograph devices are configured. FIG. 7 is a diagram showing a list display screen in which the waveform data of the waveform data server device is viewed from the client device. FIG. 8 is a single line connection diagram of the power transmission system. FIG. 9 is a diagram showing an automatic oscillograph system. FIG. 10 is a block diagram of the automatic oscillograph apparatus. FIG. 11 is a diagram showing a voltage element activation detection circuit in the logic circuit diagram of the activation detection unit in the block diagram of the automatic oscillograph apparatus. FIG. 12 is a diagram showing a current element activation detection circuit in the logic circuit diagram of the activation detection unit in the block diagram of the automatic oscillograph apparatus. FIG. 13 is a diagram showing a DC element activation detection circuit in the logic circuit diagram of the activation detection unit in the block diagram of the automatic oscillograph apparatus. FIG. 14 is a diagram showing a start detection circuit for returning from all stops in the logic circuit diagram of the start detection unit in the block diagram of the automatic oscillograph apparatus. FIG. 15 is a diagram illustrating the relationship between activation detection and priority order determination. FIG. 16 shows an automatic oscillograph apparatus No. It is a figure which shows the relationship between installation location and a starting factor. FIG. 17 is a diagram showing a connection between a time signal transmission device and a plurality of automatic oscillograph devices. FIG. 18 is a diagram showing a connection of a time signal transmission device, a time signal light conversion / distribution device, and an automatic oscillograph device. FIG. 19 is a front view and a side view of the automatic oscillograph apparatus. FIG. 20 is a rear view of the automatic oscillograph apparatus. FIG. 21 is a front view of the time signal transmitter. FIG. 22 is a side view of the time signal transmitter. FIG. 23 is a front view of the time signal light conversion / distribution apparatus. FIG. 24 is a side view of the time signal light conversion / distribution apparatus.

  Hereinafter, an automatic oscillograph device, a waveform data server device, and an automatic oscillograph system according to the present invention will be described in detail with reference to embodiments shown in the drawings.

  First, in the automatic oscillograph apparatus according to the embodiment of the present invention, a method for determining the priority (priority order) of waveform data will be described below.

  In the automatic oscillograph device of this embodiment, generally, when the three-phase AC voltage falls below the set level, when the zero-phase voltage rises above the set level, when the three-phase AC current and zero-phase current exceed the set level , Start to detect. It is also started when the circuit breaker opening command contact input as a DC (direct current) element, which is an operation signal indicating the operation of an accident detection relay for detecting an accident in a transmission line, is turned on. . Since the operation of the breaker opening command contact means detection of an accident in the protection target line, the waveform data recorded by the activation detection is important. In such a case, the priority of the waveform data is positioned as “high”.

  On the other hand, when the circuit breaker opening command contact is activated even though no accident has been detected on the waveform data, there may be a case where the circuit breaker is intentionally opened manually, but this may mean that the protective relay malfunctions. is there. In such a case, it does not contribute to accident analysis, but is important from the viewpoint of equipment maintenance such as verification of the accident removal process. In such a case, the priority of the waveform data is positioned as “medium”.

For example, when there are two buses A and B, and the bus on one side is stopped for periodic inspection, and the contact signal derived from the bus protection relay is input to check the operation during inspection, the bus protection relay operates. However, the bus voltage monitored by the automatic oscillograph device may not change. The waveform data in such a case is clearly not important.
However, if an accident state is detected from a change in waveform on the waveform data, it is important data and must be transmitted with priority. In this way, it is not handled as priority data only by turning on the contact signal of the protective relay, but if both the relay contact on and changes in the voltage waveform and current waveform are detected, the monitoring line of the automatic oscillograph device Since the possibility of an actual accident is high, the priority of waveform data is positioned as “high”.

  If an accident was detected on the voltage waveform data and current waveform data, but the protective relay did not operate, the accident was considered to have occurred on a line that was not monitored by the automatic oscillograph. In such a case, the priority of the waveform data is positioned as “low”.

  Further, there are many cases where the electric accident portion is not included in the storage of the waveform data, such as the scheduled activation or test activation of the automatic oscillograph device. Since these waveform data do not need to be analyzed urgently, they are treated as non-important (non-priority) data. These are arranged as shown in FIG.

  15A to FIG. 2D show examples of determination of the degree of priority of the waveform data based on the priority order determination result shown in FIG. 15, and FIG. 2A shows only the activation at the AC element that is the bus voltage as an example of the analog signal. FIG. 2B shows a case where the DC element which is an operation signal representing the operation of the accident detection relay is not activated, FIG. 2B shows a case where only the DC element is activated and no AC element is activated, and FIG. 2C is an AC activation condition. FIG. 2D shows that the AC activation condition is set and the DC activation condition is locked, but the activation in the AC element is shown. FIG. 6 shows the case where the priority setting is made when the DC contact signal is on.

  However, in FIG. 15, the ◯ marks indicate the following cases.

      AC startup: When the automatic oscillograph detects a change that exceeds (or falls below) the set voltage / current level.

      DC start: When a change in the operation contact signal of the protective relay input to the automatic oscillograph is detected (accident detection).

      DC is used for priority determination: When a change in the operation contact signal of the protective relay input to the automatic oscillograph device is detected (accident detection) and used for priority / non-priority determination.

  In this way, by assigning priorities at the time of transmission to the waveform data collected by the automatic oscillograph device, it is possible to transmit accident data preferentially and send important data to the department in charge of accident analysis quickly. Become.

  By the way, three-phase transmission line accidents are classified into 1-line ground fault, 2-wire ground fault, 3-wire ground fault, 2-wire short-circuit, 3-wire short-circuit according to the accident aspect. There are things that recover for a moment and then become accident again, and those that continue the accident situation. For example, when a flying object gets caught on a power transmission line under strong winds and repeats contact and non-contact states, or may be left in contact, it may occur. In such a case, in the first ground fault, even if it is a fine ground fault, it may gradually progress to a heavy ground fault or a complete ground fault (a state where the ground fault impedance is zero). In such a case, it is clear that the accident analysis is performed with the waveform data of the heavy ground fault or the complete ground fault state rather than the waveform data of the first micro ground fault state, and is recorded as continuous waveform data. However, analysis becomes easier.

  The automatic oscillograph device not only stores waveform data for a certain period of time after the accident detection from a certain period of time before the accident detection, but also detects changes in voltage and current again between the start of storage and the end of storage. The storage time can be extended any number of times to the limit of the capacity of the storage unit. As a result, as shown in FIG. 3, accident waveforms repeated in a short time can be collected and recorded in one data file.

  In order to realize this, the automatic oscillograph apparatus detects the accident waveform and detects the accident waveform even after the waveform data is being recorded, and simultaneously records the waveform data and evaluates it.

  FIG. 2A is a determination example of only AC activation (priority level = low), FIG. 2B is a determination example of DC activation only (priority level = medium), and FIG. 2C is an AC & DC activation (priority level = high). FIG. 2D is a determination example of a case where priority is treated (priority level = high) when activation is not performed only by turning on the DC contact input but AC activation is involved.

  On the other hand, the state where the voltage drops in all three phases as in the case of a power failure due to an accident may continue until the accident is restored. In such a case, it is often the data at the time of a power failure that does not contribute to accident analysis even if waveform data recording is continued. If such data is included, even if the priority of data transmission is determined, one piece of data in a power failure state becomes very long (recording can be continued until the storage unit is full), The entire system may be occupied with this data, and other data may not be transmitted.

  As shown in FIG. 4, when the power transmission line is in a power failure state, it is possible to reduce useless memory by storing only the initial portion and the portion at the time of power failure recovery. Actually, when the input voltage value of the power transmission line becomes less than a certain value for all three phases, the automatic oscillograph apparatus determines that the power transmission line is out of power, and after the determination, the storage ends and the voltage is When returning, data is collected for a certain period of time from the time of return detection.

  In the case of an equipment accident, the power transmission stoppage may continue for hours or days. In such a case, the waveform data at the time of the accident and the waveform data at the time of the accident recovery are collected as separate data files, and the former data Is transmitted without waiting for the latter data.

  By the way, in the automatic oscillograph apparatus, the number of channels of accident waveform data is collected and transmitted in one file. The analysis of the accident waveform is better when the three-phase voltage and zero-phase voltage (total of 4 channels) are treated as a set of data, and the current of three phases and zero-phase current (total of 4 channels) are treated as a set of data. This is because it becomes easier. However, since it is not known in which transmission line the actual accident will occur, the substation bus voltage (voltage 3 phase 2 sets) and the current of each branch line from the bus (feeder) 3 phases and these zero phase In many cases, an element to which components are added is input to an automatic oscillograph.

  The automatic oscillograph device transmits only the waveform data of the input elements related to the accident (for example, the bus voltage waveform and the current waveform of the accident line) rather than transmitting the entire recorded data at the time of the accident detection (for example, bus voltage drop). Is more efficient.

  Therefore, as shown in FIG. 5, waveform data set in advance and grouped, such as the voltage of the accident detection line and the related line and bus, are extracted from the data stored at the time of the accident and transmitted.

  The multi-channel automatic oscillograph apparatus shown in FIG. 5 sets group information for sampling waveform data (hereinafter referred to as waveform data) to set group information obtained by dividing a plurality of input elements of the waveform data into a plurality of groups. Based on the group information set by the units G12 to G32 and the group information setting units G12 to G32, the waveform data corresponding to the input elements set for each group is extracted from the waveform data stored in the storage unit. First to third data group extraction units G11 to G31 are provided. In FIG. 5, the first data group extraction unit G11 extracts the three-phase voltage, the zero-phase voltage, the A-line three-phase current, and the A-line zero-phase current, and the second data group extraction unit G21 extracts the B-line three-phase current and B The wire zero-phase current is extracted, and the third data group extraction unit G31 extracts the C-wire three-phase current and the C-wire zero-phase current.

  In the automatic oscillograph apparatus according to the present invention, it is not necessary to transmit the current waveform data of the non-accident line which is not necessary for the accident analysis, and the data transmission can be made efficient.

  By the way, the number of channels in which the waveform input of the automatic oscillograph device can be varied is 8 channels, 16 channels, 32 channels, 64 channels, and 128 channels. In substations where large-scale channel types have been installed since the beginning, data extraction as needed contributes to the efficiency of accident waveform data transmission, but there are many small-channel type substations installed. However, there is a case where the device is used for each device such as an automatic oscillograph device dedicated to a voltage waveform and an automatic oscillograph device dedicated to a current waveform.

  The change in voltage was small, but when the line was clearly interrupted due to overcurrent, if both voltage waveform and current waveform were input to one automatic oscillograph device, the voltage waveform and current waveform were transmitted in a single file. However, when the current waveform is transmitted in a divided manner to a plurality of automatic oscillograph devices, the voltage waveform may not be recognized as an accident waveform because the voltage fluctuation is smaller.

  In such a case, multiple automatic oscillograph units related to the detection of an accident are started in conjunction with each other, and the waveform data of the bus voltage at that time is automatically generated for the current waveform detected in the accident. Not only can the oscillograph be able to record reliably regardless of the voltage startup setting level, it can also eliminate the waste of inputting the same bus voltage data etc. to all small-channel automatic oscillographs. .

  FIG. 6 shows interlocking activation when a plurality of automatic oscillograph devices are configured. The automatic oscillograph devices 11, 12, and 13 are connected to the waveform data server device 14 via the data communication network 20. A data server device 14 is connected to the client device 15 via a data communication network 20. In FIG. 6, the activation signal output from the automatic oscillograph devices 12 and 13 is input to the automatic oscillograph device 11.

  The automatic oscillograph devices 11, 12, and 13 store waveform data in a storage unit based on activation signal output units 11a, 12a, and 13a that output an activation signal to the outside, and external input activation signals that are input from the outside. External activation setting units 11b, 12b, and 13b for setting whether or not. The external activation setting unit 11b of the automatic oscillograph 11 is set to permit activation by an external input activation signal input from the outside.

  A three-phase voltage and a zero-phase voltage are input to the automatic oscillograph device 11, an A-line three-phase current and an A-line zero-phase current are input to the automatic oscillograph device 12, and a B-line three-phase current is input to the automatic oscillograph device 13. B-line zero-phase current is input. Here, A line and B line are power transmission lines.

  In the above configuration, when the automatic oscillograph device 12 or the automatic oscillograph device 13 starts when an accident occurs on the A line or the B line and an overcurrent is detected, the automatic oscillograph device 12 or the automatic oscillograph device 13 automatically starts. An activation signal is output to the oscillograph device 11, and the dynamic oscillograph device 11 is also activated.

  By the way, the failure part of the transmission line was identified, but after that, when the same automatic oscillograph device operates many times due to intermittent arc discharge, etc., if a large amount of data is sent, the failure of the other transmission line Monitoring can be difficult. In such a case, in order to prevent a large amount of data from being transmitted, it is necessary to change the activation detection level of the automatic oscillograph device for the line, or to lock the detection function itself or the priority determination function. In that case, if you go to the substation where the automatic oscillograph device is installed and change the settings, a large amount of data accumulates during that time, and post-processing is difficult.

  FIG. 7 shows the data of the waveform data server device (list display screen as seen from the client), and the activation detection level for the automatic oscillograph device is displayed by the selection setting dialog for the priority data relationship shown at the bottom of FIG. Or setting for each channel of information on whether to perform priority judgment, setting of time limit until detection of restart, judgment level continuation judgment time, data recording time at return, or group information, Alternatively, the interlock activation conditions can be set from the waveform data server device. This can protect the automatic oscillograph system from sending large amounts of data. In addition, you may use not only such a waveform data server apparatus but the accident waveform analyzer which has a function similar to a waveform data server apparatus.

  Next, an example of data transmission at the time of an actual accident will be described using the single-line diagram of the power transmission system shown in FIG. In FIG. 8, buses La1 and La2 of substation A are connected to buses Lc1 and Lc2 of substation C via transmission lines L11 and L12, and buses Lc1 and Lc2 of substation C are connected to buses Lc1 and Lc2 of substation C via transmission lines L21 and L22. The buses Lb1 and Lb2 of substation B are connected. Further, the buses Ld1 and Ld2 of the substation D are connected to the buses Lc1 and Lc2 of the substation C via the transmission lines L31 and L32, and the substations are connected to the buses Lc1 and Lc2 of the substation C via the transmission lines L41 and L42. E buses Le1 and Le2 are connected. In FIG. 8, a circle mark is a disconnector, and a square mark is a circuit breaker.

  In substation A, CBa is a bustie disconnector. Further, the primary side of the voltage divider PDa1 is connected to the bus line La1, and the secondary side of the voltage divider PDa1 is connected to one input terminal of the bus voltage selection relay 43Pa. Further, the primary side of the voltage divider PDa2 is connected to the bus line La2, and the secondary side of the voltage divider PDa2 is connected to the other input terminal of the bus voltage selection relay 43Pa. Current transformers CTa1 and CTa2 are arranged on the transmission lines L11 and L12. In addition, the buses La1 and La2 of the substation A are connected to other substations via a power transmission line L13, and a current transformer CTa3 is disposed in the power transmission line L13.

  Here, the bus voltage selected by the bus voltage selection relay 43Pa and a signal representing the current from the current transformers CTa1 and CTa2 are input to the first automatic oscillograph device, and the bus voltage selected by the bus voltage selection relay 43Pa. A signal representing the current from the current transformer CTa3 is input to the second automatic oscillograph.

  In substation B, CBb is a bustie disconnector. Further, the primary side of the voltage divider PDb1 is connected to the bus Lb1, and the secondary side of the voltage divider PDb1 is connected to one input terminal of the bus voltage selection relay 43Pb. Further, the primary side of the voltage divider PDb2 is connected to the bus Lb2, and the secondary side of the voltage divider PDb2 is connected to the other input terminal of the bus voltage selection relay 43Pb. Current transformers CTb1 and CTb2 are disposed on the transmission lines L21 and L22. Further, the buses Lb1 and Lb2 of the substation B are connected to other substations via a power transmission line L23, and a current transformer CTb3 is disposed in the power transmission line L23.

  Here, the bus voltage selected by the bus voltage selection relay 43Pb and the signal representing the current from the current transformers CTb1 and CTb2 are input to the third automatic oscillograph device, and the bus voltage selected by the bus voltage selection relay 43Pb. And a signal representing the current from the current transformer CTb3 is input to the fourth automatic oscillograph.

  In substation C, CBc is a bustie disconnector. Further, the primary side of the voltage divider PDc1 is connected to the bus Lc1, and the secondary side of the voltage divider PDc1 is connected to one input terminal of the bus voltage selection relay 43Pc. Further, the primary side of the voltage divider PDc2 is connected to the bus Lc2, and the secondary side of the voltage divider PDc2 is connected to the other input terminal of the bus voltage selection relay 43Pc. Current transformers CTc11 and CTc12 are arranged on the transmission lines L31 and L32, and current transformers CTc21 and CTc22 are arranged on the transmission lines L41 and L42.

  Here, the bus voltage selected by the bus voltage selection relay 43Pc and the signal representing the current from the current transformers CTc11, CTc12 are input to the fifth automatic oscillograph device, and the bus voltage selected by the bus voltage selection relay 43Pc is selected. A signal representing the current from the current transformers CTc21 and CTc22 is input to the sixth automatic oscillograph.

  In substation D, CBd is a bustie disconnector. Further, the primary side of the voltage divider PDd1 is connected to the bus Ld1, and the secondary side of the voltage divider PDd1 is connected to one input terminal of the bus voltage selection relay 43Pd. Further, the primary side of the voltage divider PDd2 is connected to the bus Ld2, and the secondary side of the voltage divider PDd2 is connected to the other input terminal of the bus voltage selection relay 43Pd. The buses Ld1 and Ld2 of the substation B are connected to other substations via power transmission lines L33 and L34, and current transformers CTd1 and CTd2 are disposed on the power transmission lines L32 and L34.

  Here, the bus voltage selected by the bus voltage selection relay 43Pd and a signal representing the current from the current transformers CTd1, CTd2 are input to the seventh automatic oscillograph.

  In substation E, CBe is a bustie disconnector. The primary side of the voltage divider PDe1 is connected to the bus Le1, and the secondary side of the voltage divider PDe1 is connected to one input terminal of the bus voltage selection relay 43Pe. The primary side of the voltage divider PDe2 is connected to the bus Le2, and the secondary side of the voltage divider PDe2 is connected to the other input terminal of the bus voltage selection relay 43Pe. The buses Le1 and Le2 of the substation B are connected to other substations via power transmission lines L43 and L44, and current transformers CTe1 and CTe2 are arranged on the power transmission lines L32 and L34.

  Here, the bus voltage selected by the bus voltage selection relay 43Pe and a signal representing the current from the current transformers CTe1 and CTe2 are input to the eighth automatic oscillograph.

  Next, the effects of the automatic oscillograph device of the present invention will be described based on actual cases (Examples 1 and 2) when an accident occurs.

[Example 1]
In substation A, a conventional old type automatic oscillograph was used. When the contact of the circuit breaker operation command signal of substation A is turned on, the automatic oscillograph device is activated and the data is transmitted with priority, but changes in voltage, current, etc. due to an accident on the waveform data Even if no data is detected, it is transmitted as priority data.

  Therefore, in addition to the system fault, for example, the contact of the circuit breaker operation command signal operates even when the power receiving system is switched, so that the automatic oscillograph device is activated and transmits data.

  In such a case, if the operation contact signal of the protective relay for detecting an accident is input to the automatic oscillograph device instead of the operation contact signal of the circuit breaker, data can be transmitted as priority data only at the time of an actual accident. However, in reality, there are many types of protection relays for detecting accidents, and it is not practical to input them all to the automatic oscillograph for each transmission line, so the final decision that usually passed through a complicated logic circuit As a result, the operation contact signal of the circuit breaker is inputted to the automatic oscillograph device, and this includes the case of operation by human operation.

  By replacing such an old type automatic oscillograph device with the automatic oscillograph device of the present invention, a change in the contact of the circuit breaker operation command signal is detected, and a change in voltage, current, etc. due to an accident on the waveform is detected. Since only the detected data is preferentially transmitted, it is possible to smoothly transmit other accident data and analyze the waveform that occurred during accident processing due to multiple lightning strikes.

[Example 2]
As shown in FIG. 8, substation C is connected to substation A and substation B in the upper system and substation D and substation E in the lower system via a transmission line.

  One day, on the transmission line between substation C and substation D, a 1-L (L31) phase A and a 2L-side (L32) phase B cause a two-wire ground fault due to lightning due to lightning. And B phase became short-circuited through the steel tower. Therefore, an overcurrent state occurred in the transmission line between A-C, B-C, and C-D, and the bus voltage of all substations decreased. Each power transmission line has a two-line configuration, and power is normally transmitted from the other party's line even if one of the lines is interrupted. However, at this time, both the 1L side and the 2L side were in an accident, and both were shut off by the circuit breaker, and the substation D was temporarily stopped.

  In each substation, an automatic oscillograph device is installed on the power transmission side for each power transmission line, and the total number was 8 or more although details are unknown. Since all the substation bus voltages dropped, all of these automatic oscillographs were activated and recorded waveform data. Of these, the most important waveform data is only data between the accident sections CD. The arc discharge at the point of the accident disappeared by opening the circuit breaker, and the power transmission between C and D was resumed by the subsequent high-speed reclosing operation, and the bus voltage of the substation D was restored. As a result, the automatic oscillograph device for the line C-D of substation C was activated by the contact signal input to the circuit breaker, and all the automatic oscillograph devices of substation D were activated by the restoration of the bus voltage.

  When the automatic oscillograph apparatus is activated, if priority / non-priority of data is determined by the priority determination method of the present invention, it can be seen that important waveform data is transmitted with high priority as shown in FIG. In FIG. 16, the data of the accident section at the time of the accident is only No. 5, which is the most important waveform data. The next most important is the waveform data of No. 9, which is the waveform data at the time of automatic reclosing in this section.

  Thus, according to the present invention, it is determined that only the most important waveform data has a high priority. In this embodiment, since each automatic oscillograph device observes only one line of waveform data, the priority of data transmission within the automatic oscillograph device does not affect the determination of the transmission order from the device. This contributes to the determination of the priority order in the waveform data server device that receives the waveform data.

  FIG. 9 shows an automatic oscillograph system. As shown in FIG. 9, the automatic oscillograph system includes automatic oscillograph devices 21 to 24, waveform data server devices 25 to 27, and client devices 28 to 32. The automatic oscillograph devices 21 to 23 are connected to the waveform data server device 25, and the automatic oscillograph device 24 is connected to the waveform data server device 27. The waveform data server device 25 is connected to the client devices 28 and 29, the waveform data server device 26 is connected to the client device 30, and the waveform data server device 27 is connected to the client device 31 and the client device 32. Yes. The waveform data server devices 25 to 27 are connected to each other.

  In the automatic oscillograph system having the above configuration, according to the recent distributed database technology, even when actual waveform data is distributed in a plurality of waveform data server devices, the form is formed as one database when viewed from the client device. be able to. For example, 10 pieces of data generated in the same time zone are arranged in the priority order in each waveform data server device 25 to 27, and are compared with each other between the waveform data server devices 25 to 27. Data is displayed separately according to priority.

  As described above, it can be seen that the method of the invention that preferentially treats the main data is very useful in applications in which the data to be checked is 2 out of 10 and the amount of unnecessary waveform data is very large.

  FIG. 10 shows a block diagram of the automatic oscillograph apparatus. The automatic oscillograph 40 samples at least one waveform of an analog signal input unit and an input unit 41 as an example of an operation signal input unit, and a signal representing a voltage or a signal representing a current input to the input unit 41. An A / D conversion unit 42 that converts the waveform data into a waveform data, a storage unit 43 that stores the waveform data converted by the A / D conversion unit 42 and operation signal data sampled in synchronization with the waveform data; An activation detection unit 44 including an analog signal activation detection unit and an operation signal activation detection unit, a control unit 45 as an example of a data control unit for storing waveform data and operation signal data in the storage unit 43, and stored in the storage unit 43 Among the waveform data stored in the storage unit 43 and the priority order determination unit 46 for determining the priority order of the waveform data obtained according to the priority order determination condition A transmission unit 47 for transmitting a high previous ranking waveform data before other waveform data, and a clock unit 48. Among the input signals input to the input unit 41, the analog signal is a voltage signal from the voltage divider PD or a current signal from the current transformer CT, and the input signal is converted to a level set in advance by the input unit 41. Is done. A measurement transformer (Potential Transformer) may be used instead of the voltage divider PD.

  Here, the storage unit 43 is provided with a ring buffer as an example of a delay unit, and waveform data for a predetermined time is always held in the ring buffer, and the waveform data delayed from the ring buffer by a predetermined time at the time of activation. Is stored in the waveform data storage area of the storage unit 43. A delay unit may be provided separately from the storage unit 43. The clock unit 48 measures time based on a time code signal (reference time signal) and a second timing signal (reference 1 second pulse) from a time signal oscillation device 200 (shown in FIGS. 17 and 18) described later. To do. When the waveform data is stored in the waveform data storage area of the storage unit 43, the date / time signal at startup from the clock unit 48 is stored in the storage unit 43 in association with the waveform data.

  FIG. 11 shows a voltage element activation detection circuit in the logic circuit diagram of the activation detection unit 44 in the block diagram of the automatic oscillograph apparatus. In this voltage element start detection circuit, as shown in FIG. 11, three-phase AC voltages Va (signal V1), Vb (signal V2), Vc (signal V3) and zero-phase voltage V0 (signal V4) are input. Yes. This voltage element activation detection circuit includes phase voltage drop detectors 51 to 53 (described as phase voltage drop in FIG. 11) to which signals V1 to V3 are input, and a zero phase voltage rise detector to which signal V4 is input. 54 (described as zero phase voltage rise in FIG. 11), UV (voltage drop) start setting 55 to 57, OV (voltage rise) start setting 58, output terminal of phase voltage drop detector 51 and UV (voltage drop). ) An AND (logical product) circuit 61 in which the output terminal of the start setting 55 is connected to the input terminal, the output terminal of the phase voltage drop detection unit 52, and the output terminal of the UV (voltage drop) start setting 56 are connected to the input terminal. AND circuit 63 in which the output terminal of phase voltage drop detector 53 and the output terminal of UV (voltage drop) activation setting 57 are connected to the input terminal, and the output terminal of phase voltage rise detector 54 and OV (Voltage rise) Output terminal of start setting 58 is connected to input terminal And an AND circuit 64.

  The voltage element activation detection circuit includes a line voltage drop detector 65 (described as line voltage drop in FIG. 11) to which signals V1 and V2 are input, and a line voltage to which signals V2 and V3 are input. A drop detection unit 66 (described as a line voltage drop in FIG. 11), a line voltage drop detection unit 67 (described as a line voltage drop in FIG. 11) to which signals V1 and V3 are input, and a line voltage drop detection OR (logical OR) circuit 68 to which the output terminal terminals of units 65 to 67 are connected, UV (voltage drop) activation setting 69, and the output terminal of OR (logical sum) circuit 68 and UV (voltage drop) activation setting 69. And an AND circuit 70 having an output terminal connected to the input terminal.

  Furthermore, the activation detection circuit for this voltage element includes all-stop lock detectors 71 to 73 (described as “all-stop lock detection” in FIG. 11) to which signals V1 to V3 are respectively input, and all-stop lock detectors 71 to 73. An AND circuit 74 whose output terminal is connected to the input terminal, and an ON delay 75 (on delay time 15 seconds (power failure storage time) in which the output terminal of the AND circuit 74 is connected to the input terminal and outputs the all-stop lock signal from the output terminal. )) And an inverter 76 having an output terminal of the on-delay 75 connected to the input terminal. The all-stop lock detectors 71 to 73 and the AND circuit 74 constitute a power failure detector.

  The voltage element activation detection circuit includes an OR circuit 77 in which the output terminals of the AND circuits 61 to 64 and 70 are connected to the input terminal, and an output terminal of the OR circuit 77 and an output terminal of the inverter 76 connected to the input terminal. And an AND circuit 78 that outputs a voltage element activation detection signal from the output terminal.

  The UV (voltage drop) activation settings 55 to 57 and the UV (voltage drop) activation setting 69 output a high level signal (logic “1”) when permitting voltage drop activation. The OV (voltage rise) activation setting 58 outputs a high level signal (logic “1”) when voltage rise activation is permitted.

  FIG. 12 shows a current element activation detection circuit in the logic circuit diagram of the activation detector 44 in the block diagram of the automatic oscillograph apparatus. In this current element start detection circuit, three-phase alternating currents Ia (signal I1), Ib (signal I2), Ic (signal I3) and zero-phase current I0 (signal I4) are input. The current element activation detection circuit includes phase current rise detection units 101 to 103 (indicated as phase current reduction in FIG. 12) to which signals I1 to I3 are input, and a phase current increase detection unit 104 to which a signal I4 is input. (In FIG. 12, described as phase current rise and zero phase current rise), OC (overcurrent) start setting 105 to 107, output terminal of phase current rise detector 101 and output terminal of OC (overcurrent) start setting 105 Is connected to the input terminal AND circuit 111, the output terminal of the phase current rise detection unit 102 and the output terminal of the OC (overcurrent) activation setting 106 is connected to the input terminal 112, the phase The AND circuit 113 in which the output terminal of the current rise detection unit 103 and the output terminal of the OC (overcurrent) activation setting 107 are connected to the input terminal, and the output terminal of the zero-phase current rise detection unit 104 and the OC (overcurrent) activation setting. 58 output terminals are input terminals And an OR circuit 115 in which the output terminals of the AND circuits 111 to 114 are connected to the input terminals. A current element activation detection signal is output from the output terminal of the OR circuit 115.

  The OC (overcurrent) activation settings 105 to 108 output a high level signal (logic “1”) when overcurrent activation is permitted.

  The voltage element start detection circuit shown in FIG. 11 and the current element start detection circuit shown in FIG. 12 constitute an analog signal start detection unit.

  FIG. 13 shows a DC element activation detection circuit as an example of the operation signal activation detection unit in the logic circuit diagram of the activation detection unit 44 in the block diagram of the automatic oscillograph apparatus. In the DC element activation detection circuit, as shown in FIG. 13, a detection unit 121 that detects a change in the DC element from OFF to ON, a detection unit 122 that detects a change in the DC element from ON to OFF, An ON activation setting 123, an OFF activation setting 124, an AND circuit 125 in which an output terminal of the detection unit 121 and an output terminal of the ON activation setting 123 are connected to an input terminal, an output terminal of the detection unit 122, and an off activation setting 124 An AND circuit 126 having an output terminal connected to the input terminal, and an OR circuit 127 that outputs the DC element activation detection signal with the output terminal of the AND circuit 125 and the output terminal of the AND circuit 126 connected to the input terminal.

  The on activation setting 123 outputs a high level signal (logic “1”) when allowing on activation (change of the DC element from OFF to ON). The off activation setting 124 outputs a high level signal (logic “1”) when off activation (change of the DC element from on to off) is permitted.

  FIG. 14 shows a start detection circuit for returning from all stops in the logic circuit diagram of the start detection unit 44 in the block diagram of the automatic oscillograph apparatus. In this all-stop recovery start detection circuit, as shown in FIG. 14, three-phase AC voltages Va (signal V1), Vb (signal V2), and Vc (signal V3) are inputted. The voltage element activation detection circuit includes all stop return detection units 131 to 133 to which signals V1 to V3 are input, and an AND circuit 134 to which output terminals of all stop return detection units 131 to 133 are connected to input terminals. The output terminal of the AND circuit 134 is connected to the input terminal of the ON delay 135 (delay time 2 cycles (power failure recovery memory time)), the all-stop recovery start setting 136, and the output terminal of the on-delay 135 and the all-stop recovery start. An output terminal of setting 136 is connected to the input terminal, and an AND circuit 137 from which an all-stop recovery start detection signal is output is provided. The all-stop recovery detection units 131 to 133 and the AND circuit 134 constitute a voltage recovery detection unit.

  According to the automatic oscillograph apparatus configured as described above, the priority order determination unit 46 determines the priority order of the waveform data stored in the storage unit 43 based on the priority order determination condition based on the activation detection by the activation detection unit 44. Then, the transmission unit 47 adds the priority information, which is the determination result by the priority determination unit 46, to the waveform data header, and based on the priority information, the waveform data stored in the storage unit 43 is stored. Of these, the waveform data having a high priority is transmitted to the waveform data server device prior to the other waveform data. In this way, it is possible to select and transmit preferentially the most important and necessary waveform data that is considered necessary for accident analysis when an electrical accident occurs, and to easily distinguish the waveform data of the accident part on the receiving side. Possible waveform data can be transmitted.

  In addition, with respect to the waveform data stored in the storage unit 43, activation detection by both the voltage element of the activation detection unit 44, the activation detection circuit of the current element and the activation detection circuit of the DC element, activation of the DC element of the activation detection unit 44 The priority determination unit 46 uses priority determination conditions that are set so that the priority becomes higher and lower in order of activation detection only by the detection circuit and activation detection only by the voltage element and current element activation detection circuit of the activation detection unit 44. Therefore, waveform data when activation is detected by both the voltage element, current element, and DC element, waveform data when activation is detected only by the DC element, waveform when activation is detected only by the voltage element, current element The data is transmitted by the transmission unit 47 in the order of data. Therefore, the waveform data necessary for the accident analysis can be transmitted first based on the activation factor.

  In addition, when the activation is detected, the waveform data for the preset storage time is stored in the storage unit 43, whereby the waveform data immediately before the activation can be stored. In addition, when activation is detected again during storage of waveform data, waveform data including accident parts that occur continuously at intervals can be stored by extending the storage time and storing waveform data. it can.

  In addition, the signals representing the three-phase AC voltage of the power transmission line are equal to or lower than the preset power failure detection value for all three phases, and the all-stop lock detection units 71 to 73 as an example of the power failure detection unit If it is detected that the operation is stopped, the control unit 45 stores the waveform data for a preset power outage storage time in the storage unit 43 and ends. Next, the signals representing the three-phase AC voltage of the power transmission line exceed the return detection values set in advance for all three phases, and the all-stop recovery detection units 131 to 133 as an example of the voltage recovery detection unit Is detected, waveform data for a preset voltage recovery storage time is stored in the storage unit 43. As described above, once the waveform data is temporarily stored in the storage unit 43 when the transmission line is completely stopped, the waveform data is then stored in the storage unit 43 when the voltage of the transmission line is restored. The activation detection by (analog signal activation detection unit) continuously does not continue to store the waveform data, and the two waveform data at the time of all the stoppages and the voltage recovery can be stored.

  In addition, when waveform data having a high priority among the waveform data stored in the storage unit 43 is transmitted by the transmission unit 47, the group information setting units G12 to G32 are set from the waveform data having the high priority. Based on the group information, the first to third data group extraction units G11 to G31 extract the waveform data corresponding to the input elements set for each group, and transmit the extracted waveform data. Thereby, it becomes possible to transmit only the waveform data of the input elements related to the accident.

  In addition, in the automatic oscillograph apparatuses 11, 12, and 13 shown in FIG. 6, when the activation is detected, the activation signal is output to the outside by the activation signal output units 11a, 12a, and 13a, and based on the external input activation signal input from the outside. By setting whether or not the waveform data is stored in the storage unit 43 by the external activation setting units 11b, 12b, and 13b, it is possible to activate a plurality of automatic oscillograph devices in conjunction with each other.

  In addition, according to the waveform data server device 14 (shown in FIG. 6) having the above-described configuration, a waveform having a high priority for the waveform data generated at substantially the same time based on the priority information added to the header portion of the waveform data. Data is extracted, and the extracted waveform data is distinguished from other waveform data, and the server side display control unit 14a displays a list on the client device 15. Thereby, the data analyst can easily distinguish the waveform data of the accident part from the received enormous waveform data, and the time required for the electrical accident analysis can be shortened.

  Also, the AC element activation condition (analog signal activation condition), the DC element activation condition (operation signal activation condition), and the priority order of the priority determination unit 46 with respect to the automatic oscillograph device by the operation from the client device 15. The waveform data server device 14 includes a server side setting unit 14c for setting at least one of the determination conditions, so that the waveform data server device 14 can set conditions for the automatic oscillograph devices 11, 12, and 13. Therefore, the automatic oscillograph devices 11, 12, and 13 can be easily managed.

  When the server-side priority determining unit 14b receives the waveform data determined to have a priority higher than the preset order, the server-side transmission unit 14d notifies the client device 15 that the waveform data has been received. Notice. As a result, the client device 15 can know that the waveform data having an arbitrary priority order has been received.

  Alternatively, when the waveform data whose priority is determined to be higher than or equal to the order set in advance by the server-side priority determination unit 14b is received, the server-side transmission unit 14d receives a priority higher than the order set in the client device 15 in advance. The waveform data determined to be transmitted. As a result, waveform data having an arbitrary priority order can be transmitted to the client device 15 side.

  Further, according to the automatic oscillograph system (shown in FIG. 9) having the above-described configuration, the data analyst on the client device 28-32 side can obtain the waveform data of the accident part from the enormous waveform data received from the automatic oscillograph devices 21-24. Can be easily distinguished by the display content shown in FIG. 7, and the time required for the electrical accident analysis can be shortened.

  The automatic oscillograph with the above configuration activates the device with multiple activation factors, and determines whether the recorded data should be preferentially transmitted according to the factors and transmits it to useless data transmission. It was found that the occupation of infrastructure such as lines can be reduced. This is because the accident phenomenon immediately spreads to the entire system as in the case of a voltage drop in the power transmission system, etc., but the cause is usually only one location, and analysis of the data at that location seems to be urgent. This is due to the peculiarity of the power system infrastructure. In the case of a gas or water supply system, even if a gas leak or water leak occurs, the effect is less likely to immediately affect the entire system, and there is a time allowance for the effect of an accident to affect the power system. There is. On the other hand, in the power system, the phenomenon of voltage drop instantaneously spreads to the entire system, and the failure point is cut off and separated, but in the process of processing a huge number of waveform data recorded at that time By prioritizing only the data at the location where the accident occurred by prioritizing with the method of the present application, it becomes possible to improve the efficiency (reduction of time) when analyzing the situation when a large-scale power system accident occurs.

  In the automatic oscillograph device of the present invention, the waveform changes that occur many times due to one cause are collected into one file, the memory of the power outage state is cut off in a fixed time, and only the line data related to the accident is selected. Data transmission, remote activation of the device to ensure that the data required for accident analysis is obtained, and the ability to lock the device that can be activated many times from the client device side. These are also indispensable as efficiency is severely impaired.

  By the way, in the automatic oscillograph system of the present invention, if there is a time difference in recording in the waveform data that should have been collected at the same time, the waveform data between the devices when it is started many times in a short time as in the case of a lightning accident. In addition to being unable to compare, there is an adverse effect such that it becomes impossible to compare the phase of the AC waveform between the automatic oscillograph devices even when it is activated once. Therefore, as an automatic oscillograph system, it is necessary to completely synchronize a clock unit 48 (shown in FIG. 10) and a clock signal for giving data sampling timing between a plurality of automatic oscillograph apparatuses in the system.

  In conventional automatic oscillograph devices, the clock inside the automatic oscillograph device can be manually adjusted to the time of the wristwatch, or the time signal can be adjusted by connecting a device that can recognize the time signal and output a contact signal. Many improvements such as JJY (registered trademark) and time signals of radio clocks were followed. Then, the present applicant has developed an automatic oscillograph device that synchronizes the clock unit in the device with the GPS signal, matches the time between the automatic oscillograph devices, and synchronizes the synchronization signal for every second supplied from the GPS module. By synchronizing the phase of the data sampling clock signal (the first sampling timing of 3200 samplings per second is synchronized with the rising edge of the synchronization signal every second), the timing of data sampling between devices can be completely synchronized. An automatic oscillograph system was realized. Here, a “GPS signal” is a radio signal from a GPS (Global Positioning System) satellite.

  However, to receive GPS signals, it is necessary to install antennas where radio waves from GPS satellites can be received, and automatic oscillograph devices are installed in substations under the building or installed in dam basements. In such a case, it is impossible to receive a GPS signal in the vicinity of such an automatic oscillograph device. For this reason, the present applicant has developed a time signal light conversion and distribution device that optically converts the received GPS signal, distributes it via an optical fiber cable, returns the original signal in the vicinity of the automatic oscillograph device, and supplies it to the device did. This fiber optic cable usually ranges from hundreds to thousands of meters.

  On the other hand, in order to correctly compare the phases of AC waveforms among a plurality of automatic oscillograph devices, the allowable range of errors must be within ± 0.1 degrees in terms of phase angle. In this case, since the phase angle difference of 0.1 degree is 4.6 μs in time difference, a timing difference of several μs also affects as an error. Therefore, when a second timing signal (reference 1 second pulse) is sent by an optical fiber cable, a propagation delay of μ seconds or more must be corrected.

  Therefore, in the automatic oscillograph system of the present invention, a function for correcting the propagation delay time in the optical fiber cable is added to the time signal light conversion / distribution device. For example, when the length of the optical fiber cable is 300 m, assuming that the delay time is about 3 μsec, the delay time of (1 sec-3 μsec) is set with the DIP switch at the time of installation, and the second timing signal is set to (1 By delaying the second timing signal, the second timing signal is advanced in a pseudo manner by 3 μsec.

  In general, the substation is wide, and it is not uncommon for optical fiber cables to exceed 1 km. However, by correcting the propagation delay time, not only does the order of waveform data differ between automatic oscillographs, but also on the time axis. Accurate voltage waveform data and current waveform data can be sent to the waveform data server device with positional accuracy on the order of microseconds.

  Below, the specific example of the time signal transmission apparatus 200 and the time signal light conversion delivery apparatus 300 used for the automatic oscillograph system of this invention is demonstrated.

FIG. 17 shows a connection between the time signal transmission device 200 and a plurality of automatic oscillograph devices OS ₁ , OS _{2 to} OS _N (N is an integer of 3 or more). As shown in FIG. 17, the time code signal (reference time signal synchronized with UTC) and the second timing signal (reference 1 second pulse) output from the time signal transmission device 200 are automatically oscilloscoped via the RS-485 cable 210. Distributed to the graph devices OS ₁ , OS _{2 to} OS _N.

  In the automatic oscillograph system of the present invention, as shown in FIG. 17, a radio wave from a GPS satellite is received, and a time code signal (reference time signal) and a second timing signal every second (reference 1 second pulse) are automatically oscilloscoped. The time signal transmission device 200 that can be supplied to the graph device is provided, and by synchronizing the time between the automatic oscillograph devices, it is possible to accurately record the waveform data recording time and correctly determine the priority order of the waveform data. Become.

  In addition, the above time signal transmission is installed in a place where radio waves from GPS satellites can be received, such as substations installed in the basement of buildings, hydroelectric power stations constructed in the underground part of dams, and large-scale substations. When the automatic oscillograph apparatus cannot be installed in the vicinity of the apparatus 200, as shown in FIG. 18, the time code signal supplied from the time signal transmission apparatus 200 and the second timing signal of every second are optically converted and automatically used by the optical fiber cable. There is provided a time signal light conversion distribution device 300 that can be distributed in the vicinity of the oscillograph device, and then converted back to the original signal and supplied to the automatic oscillograph device.

  In the automatic oscillograph system to which the time signal transmission device 200 and the time signal light conversion / distribution device 300 are added if necessary, the waveform data generated at substantially the same time among the waveform data collected on the waveform data server device. In the case of multiple frequent accidents, the phase error caused by the error on the time axis of the waveform among a plurality of automatic oscillographs can be suppressed to 0.1 degrees or less.

FIG. 18 shows connections between the time signal transmission device 200, the time signal light conversion / distribution device 300, and the automatic oscillograph devices OS ₁ , OS _{2 to} OS _N. In FIG. 18, each of the automatic oscillograph devices OS ₁ , OS _{2 to} OS _N is located at a distance from each other such that the optical fiber length is 300 m, 600 m,..., 1500 m, for example.

As shown in FIG. 18, for each of the automatic oscillograph devices OS ₁ , OS _{2 to} OS _N , a pair of time signal light conversion / distribution devices 300 (transmission side) connected to each other by an optical fiber cable 310 is used. The time code signal and the second timing signal output from the time signal transmission device 200 are distributed to a plurality of time signal light conversion distribution devices 300 (transmission side) via the RS-485 cable 210. Then, the optical connector 304 (shown in FIG. 23) of the time signal light conversion / distribution device 300 (transmission side) is connected to the corresponding optical connector 304 (shown in FIG. 23) of the time signal light conversion / distribution device 300 (reception side). They are connected via a cable 310. The signals are distributed to the automatic oscillograph devices OS ₁ , OS _{2 to} OS _N via the RS-485 cable 210 to the RS-485 connector 309 (shown in FIG. 23) of each time signal light conversion distribution device 300 (reception side). In FIG. 18, the connection between the time signal transmission device 200 and the time signal light conversion / distribution device 300 via the RS-485 cable is a parallel connection (so-called bus connection method, multi-drop method).

  The time signal light conversion / distribution apparatus 300 includes a correction unit 300a that corrects the propagation delay time of the second timing signal (reference 1 second pulse) in the optical fiber cable. Here, the time signal light conversion / distribution device 300 having the same configuration is used on the transmission side and the reception side, the transmission side or the reception side is set for each device, and the time signal light conversion / distribution device 300 set on the transmission side is set. Only the correction unit 300a corrects the propagation delay time of the second timing signal (reference 1 second pulse).

  In the time signal light conversion / distribution apparatus 300, when the propagation delay time of the optical fiber cable is δ seconds, the correction unit 300a artificially delays the second timing signal every positive second by (1.0−δ) seconds. Move forward δ seconds to compensate for propagation delay time in fiber optic cable.

Figure 19 shows a front view and a side view of the automatic oscillograph device OS _1, Figure 20 shows a rear view of the automatic oscillograph device OS _1.

19, 141 is a front panel, 142 is a display unit, 143 is a mounting frame, and in FIG. 20, 150 is a power supply unit, 151 is an I / O unit, 152 is a main control unit, 153 is a sub-control unit, 154 , 155 are input units. In the power unit 150, 161 is a power switch, 162 is a power fuse, 163 is a power terminal block, and in the sub-control unit 153, 156 is an RS-485 connector for inputting a time code (date / time signal), 157 is RS-485 connector for time code output. As shown in FIG. 17, when outputting the time code signal and the second timing signal from the time signal transmission device 200 to a plurality of automatic oscillograph devices OS ₁ , OS _{2 to} OS _N , the first automatic oscillograph device The RS-485 connector 156 for inputting the time code of the OS ₁ and the RS-485 connector 207 (shown in FIG. 21) of the time signal transmission device 200 are connected via the RS-485 cable 210. Next, the RS-485 connector 157 for time code output of the _first automatic oscillograph device OS ₁ and the RS-485 connector 156 for time code input of the _second automatic oscillograph device OS ₂ are RS. Connect via -485 cable 210. Thereafter, connections are made in the same manner in the same manner.

  FIG. 21 shows a front view of the time signal transmitter 200, and FIG. 22 shows a side view of the time signal transmitter 200. FIG. 21 and 22, the ratio of the vertical dimension to the horizontal dimension is different from the actual ratio.

  In FIG. 21, 201 is a power terminal block, 202 is a time correction contact terminal block, 203 is a power fuse, 204 is an antenna terminal for GPS, 205 is a power switch, 206 is a setting operation unit, 207 is an RS-485 connector, 208 Is a display part. Here, the RS-485 connector 207 is a connector specification compliant with the RS-485 standard (American Electronic Industry Association), and the RS-485 connector 309 (shown in FIG. 23) of the time signal light conversion / distribution apparatus 300 is RS- Connected via 485 cable.

  The signal output from the RS-485 connector 207 is a date that represents the local time when the time difference (setting) between the second timing signal (reference 1 second pulse) with a duty ratio of 50% and the coordinated universal time (UTC) is calculated. It is a time signal. The second timing signal (reference 1 second pulse) is synchronized within 1 μsec with respect to Coordinated Universal Time (UTC), and the date / time signal is synchronized within 10 msec with respect to Coordinated Universal Time (UTC).

  The date and time signals are year (4 bytes), month (2 bytes), day (2 bytes), hour (2 bytes), minute (2 bytes), second (2 bytes), UTC synchronization status (1 byte) The number of used satellites (2 bytes) is serially output in a total output format of 32 bytes. A specific example is “% SR30, 1994, 01, 02, 12, 34, 56, 1,0CRLF” (“CR” and “LF” are each 1 byte).

The date / time signal transmission system is an asynchronous system with transmission speeds of 2400 bps, 4800 bps, 9600 bps, and 19200 bps (whichever one is set).
Start bit: 1
Data: 7
Parity bit: 1 (odd parity)
Stop bit: 1
10 bits.

  Further, a D-SUB 9-pin connector is used for the RS-485 connector, and a date / time signal is output from the 3rd and 4th pins, and a second timing signal is output from the 8th and 9th pins. “D-SUB” is a D-subminiature connector standard.

  FIG. 23 is a front view of the time signal light conversion / distribution device 300, and FIG. 24 is a side view of the time signal light conversion / distribution device 300. In FIGS. 23 and 24, the ratio of the vertical dimension to the horizontal dimension is different from the actual ratio.

  In FIG. 23, 301 is a power switch, 302 power fuse, 303 power terminal block, 304 is an optical connector, 305 is a transmission / reception setting panel, 306 is an optical fiber length setting switch, 307 is an alarm release switch, 308 is a status display unit, 309 Is an RS-485 connector for time code input (or time code output). The time signal light conversion / distribution apparatus 300 sets the transmission side or the reception side by the transmission / reception setting panel 305. In the time signal light conversion / distribution apparatus 300 set on the transmission side, the RS-485 connector 309 is used for inputting a time code, and the date / time signal and the second timing signal input from the RS-485 connector 309 are converted into optical signals. The light is converted and output through the optical connector 304. On the other hand, in the time signal light conversion / distribution apparatus 300 set on the receiving side, the RS-485 connector 309 is used for time code output, and the optical signal input via the optical connector 304 is converted into a date / time signal and a second timing signal. Inversely converted and output from the RS-485 connector 309.

  Although specific embodiments of the present invention have been described above in detail, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.

_{1,2,3,11,12,13,21~24, OS 1, OS 2 ~OS} N ... automatic oscillograph device 11a, 12a, 13a ... the start signal output section 11b, 12b, 13b ... outer boot setting unit 14 , 25-27 ... Waveform data server device 14a ... Server-side display control unit 14b ... Server-side priority determination unit 14c ... Server-side setting unit 14d ... Server-side transmission unit 15, 28-32 ... Client device 20 ... Data transmission network 41 ... Input unit 42 ... A / D conversion unit 43 ... Storage unit 44 ... Start-up detection unit 45 ... Control unit 46 ... Priority determination unit 47 ... Transmission unit 48 ... Timer unit 200 ... Time signal transmitter 300 ... Time signal light conversion distribution Apparatus 300a ... Correction unit G12-G32 ... Group information setting unit G11-G31 ... First to third data group extraction unit

Claims (14)

An analog signal input unit to which at least one of a signal representing the voltage of the transmission line or a signal representing the current is input;
An operation signal input unit to which an operation signal representing an operation of an accident detection relay for detecting an accident of at least the power transmission line is input;
An A / D converter that samples and converts at least one waveform of the signal representing the voltage or the signal representing the current input to the analog signal input unit into sampling waveform data;
An analog signal activation detection unit that detects whether or not the change in the sampling waveform data converted by the A / D conversion unit satisfies a preset analog signal activation condition;
An operation signal activation detection unit for detecting whether or not a change in the operation signal input to the operation signal input unit satisfies a preset operation signal activation condition;
A storage unit for storing at least the sampling waveform data converted by the A / D conversion unit;
The analog signal activation detection unit detects that the change in the sampling waveform data satisfies the analog signal activation condition, or the operation signal activation detection unit detects that the change in the operation signal is the operation signal activation condition. Is detected, the data control unit for storing the sampling waveform data in the storage unit,
A priority determination unit that determines a priority of the sampling waveform data stored in the storage unit based on a priority determination condition based on the activation detection by the analog signal activation detection unit and the activation detection by the operation signal activation detection unit; ,
Priority information, which is a determination result by the priority determination unit, is added to the header of the sampling waveform data, and the priority among the sampling waveform data stored in the storage unit based on the priority information An automatic oscillograph apparatus comprising: a transmission unit that transmits high sampling waveform data to an external device before other sampling waveform data. The automatic oscillograph device according to claim 1,
The priority determination condition of the priority determination unit is that the sampling waveform data stored in the storage unit is at least detected by both the analog signal activation detection unit and the operation signal activation detection unit, and the operation signal An automatic oscillograph apparatus, wherein priority is set so as to increase and decrease in order of activation detection only by an activation detection unit and activation detection only by the analog signal activation detection unit. The automatic oscillograph device according to claim 1 or 2,
A delay unit that outputs the sampling waveform data converted by the A / D conversion unit after being stored for a predetermined time;
The data control unit
The sampling waveform data from the delay unit is stored in the storage unit for a preset storage time when activation is detected by at least one of the analog signal activation detection unit and the operation signal activation detection unit. Oscillograph device. In the automatic oscillograph device according to any one of claims 1 to 3,
The data control unit
While the sampling waveform data is stored in the storage unit, if there is activation detection again by at least one of the analog signal activation detection unit or the operation signal activation detection unit, the sampling waveform stored in the storage unit An automatic oscillograph apparatus, wherein the storage time is repeatedly extended until the total storage time of data reaches a preset limit value. In the automatic oscillograph device according to any one of claims 1 to 4,
The signal representing the voltage of the transmission line is a signal representing a three-phase AC voltage,
A power failure detection unit that detects a power failure of the power transmission line when a signal representing the three-phase AC voltage of the power transmission line is equal to or less than a preset power failure detection value for all three phases;
A voltage recovery detection unit that detects voltage recovery of the power transmission line when the signal representing the three-phase AC voltage exceeds a predetermined recovery detection value after the power failure detection unit determines that there is a power failure. And
The data control unit
After detecting that the power outage detection unit is a power outage of the power transmission line, the sampling waveform data for a preset power outage storage time is stored in the storage unit and the process ends.
After the power failure detection unit detects that the power transmission line is out of power, the storage of the sampling waveform data in the storage unit is terminated, and then the voltage recovery detection unit detects voltage recovery of the power transmission line. The automatic oscillograph device stores the sampling waveform data for a preset voltage recovery storage time in the storage unit. The automatic oscillograph apparatus according to any one of claims 1 to 5,
A group information setting unit for setting group information obtained by dividing a plurality of input elements of the sampling waveform data into a plurality of groups for the sampling waveform data stored in the storage unit;
Based on the activation detection by the analog signal activation detection unit, the activation detection by the operation signal activation detection unit, and the group information set by the group information setting unit, from the sampling waveform data stored in the storage unit, An extraction unit for extracting sampling waveform data corresponding to the input elements set for each group;
When the transmission unit transmits sampling waveform data with high priority among the sampling waveform data stored in the storage unit, the sampling waveform extracted by the extraction unit from sampling waveform data with high priority An automatic oscillograph device for transmitting data. In the automatic oscillograph apparatus as described in any one of Claim 1-6,
An activation signal output unit for outputting an activation signal to the outside at the time of activation detection by at least one of the analog signal activation detection unit or the operation signal activation detection unit;
An automatic oscillograph apparatus comprising: an external activation setting unit configured to set whether to store the sampling waveform data in the storage unit based on an external input activation signal input from the outside. A waveform data server device that receives and stores sampling waveform data transmitted from the automatic oscillograph device according to any one of claims 1 to 7, and distributes the sampling waveform data to a client device,
Based on the priority information added to the header portion of the sampling waveform data, sampling waveform data having a high priority is extracted from the sampling waveform data generated at substantially the same time, and the extracted sampling waveform data is A waveform data server device comprising a server-side display control unit for displaying a list on the client device in distinction from other sampling waveform data. The waveform data server device according to claim 8, wherein
An analog signal activation condition of the analog signal activation detection unit, an operation signal activation condition of the operation signal activation detection unit, and a priority determination condition of the priority determination unit for the automatic oscillograph device by operation from the client device A waveform data server device comprising a server-side condition setting unit for setting at least one of them. In the waveform data server apparatus according to claim 8 or 9,
A server-side priority determination unit that determines whether or not the priority information added to the header of the sampling waveform data is equal to or higher than a preset order;
When receiving the sampling waveform data determined by the server-side priority determination unit to have a priority higher than a preset order, the client device is notified that the sampling waveform data has been received, or A waveform data server device comprising: a server-side transmission unit configured to transmit the sampling waveform data determined to have a priority higher than a preset order to the client device. An automatic oscillograph device according to any one of claims 1 to 7;
The waveform data server device according to any one of claims 8 to 10,
A data communication network in which the automatic oscillograph device and the waveform data server device are connected;
An automatic oscillograph system comprising: a client device connected to the data communication network and communicating with the waveform data server device via the data communication network. An automatic oscillograph system comprising a plurality of automatic oscillograph devices according to any one of claims 1 to 7,
A time signal transmitter for receiving radio waves from GPS satellites and outputting a reference time signal synchronized with Coordinated Universal Time (UTC) and a reference 1 second pulse to the automatic oscillograph;
The automatic oscillograph system includes a clock unit for measuring time based on the reference time signal from the time signal transmitter and the reference 1 second pulse. The automatic oscillograph system according to claim 12,
The reference time signal and the reference 1 second pulse from the time signal transmission device installed at a point where the radio wave from the GPS satellite can be received are input to the timepiece unit of the automatic oscillograph device via an optical fiber cable. An automatic oscillograph system comprising a time signal light conversion / distribution device having a correction unit for correcting the propagation delay time of the reference 1 second pulse in the optical fiber cable. The automatic oscillograph system according to claim 12 or 13,
The reference time signal from the time signal transmission device and the reference 1 second pulse are distributed to a plurality of the automatic oscillograph devices to synchronize the time of the clock unit between the automatic oscillograph devices. Automatic oscillograph system.