JPWO2020044518A1 - Synchronization system, measurement synchronization system, synchronization method, program - Google Patents

Abstract

SOLUTION: The opening / closing is based on a first signal transmitted at a predetermined time from a first clock device which is installed at a first point where a switch connected to a power transmission / distribution line exists and whose time is calibrated by radio waves. It is installed at a second point where there is a reception control device that outputs an open / close signal to the switch and a control station where an open / close surge flows through the power transmission / distribution line due to the opening or closing operation of the switch, and the time is calibrated by radio waves. The delay calculation device includes a delay calculation device that receives the second signal at the predetermined time from the second clock device, and the delay calculation device opens the circuit after the switch receives the switch at the predetermined time. The arrival time calculation unit that calculates the arrival time indicating the time when the opening / closing surge reaches the second point by adding the delay time required to complete the operation or the closing operation, and the measuring device move to the second point. It has a signal output unit that outputs a start signal indicating the start of measurement to the measuring device so that the reaching open / close surge can be measured at the arrival time.

Description

The present invention relates to a synchronization system, a measurement synchronization system, a synchronization method, and a program.

For example, as disclosed in Patent Document 1, there is known a positioning system that acquires measurement data from each of a plurality of measuring devices at synchronized times.

JP-A-2015-162108

The system disclosed in Patent Document 1 synchronizes a plurality of field devices by transmitting time information for synchronizing the time, and uses the measurement data at the same time to perform an abnormality such as noise or equipment failure, or an abnormality thereof. It estimates the location where an abnormality has occurred. In this system, information for synchronizing the time is transmitted from a predetermined device to synchronize the time of each field device.
By the way, in order to investigate the influence of the opening / closing surge caused by the opening / closing operation of the switch provided in an electric place such as a substation on a remote power receiving place, the opening / closing surge is measured at the power receiving place. .. At this time, a time delay occurs due to the mechanical operation of the switch from the time when the switch is given the opening / closing command until the opening / closing surge occurs. Therefore, even if the system described in Patent Document 1 is applied to the measurement of the opening / closing surge and the times at the electric station and the power receiving place are synchronized, the above time delay is not taken into consideration, so that the opening / closing surge is overlooked at the measurement place. There is a risk.

The main invention for solving the above-mentioned problems is to transmit at a predetermined time from a first clock device which is installed at a first point where an electric station having a switch connected to a power transmission / distribution line exists and whose time is calibrated by radio waves. It is installed at a second point where a reception control device that outputs an opening / closing signal to the switch based on the first signal and a control station where an opening / closing surge flows in through the power transmission / distribution line due to the opening / closing operation of the switch. The delay calculation device includes a delay calculation device that receives a second signal at the predetermined time from the second clock device whose time is calibrated by radio waves, and the switch is said to be the switch at the predetermined time. An arrival time calculation unit that calculates an arrival time indicating the time when the opening / closing surge reaches the second point by adding the delay time required from receiving the opening / closing signal to completing the opening / closing operation. It has a signal output unit that outputs a start signal indicating the start of measurement to the measuring device so that the switching surge that reaches the second point can be measured at the arrival time.
Other features of the invention will become apparent with reference to the accompanying drawings and the description herein.

According to the present invention, in order to measure the open / close surge generated at a predetermined point at different points, the measuring device can be made to measure at an appropriate measurement timing.

It is a block diagram which shows the measurement synchronization system which concerns on this embodiment. It is a figure which shows the hardware configuration of the reception control apparatus which concerns on this embodiment. It is a figure which shows the software configuration of the reception control apparatus which concerns on this embodiment. It is a figure which shows the hardware configuration of the delay arithmetic unit which concerns on this embodiment. It is a figure which shows the software configuration of the delay arithmetic unit which concerns on this embodiment. It is a time chart which shows an example of the delay time which concerns on this embodiment. It is a flow chart which shows the processing procedure of the measurement synchronization system which concerns on this embodiment.

The description of the present specification and the accompanying drawings will clarify at least the following matters. In the following description, the parts with the same reference numerals represent the same elements, and their basic configurations and operations are the same.

=== Measurement synchronization system 10 ===
The measurement synchronization system 10 applies an opening / closing surge generated by an opening / closing operation of a switch provided at a predetermined point (hereinafter referred to as “first point”) of the electric station 1 to a predetermined point (hereinafter “second point”) of the control station 4. It is a system for reliable measurement at "points"). The electric station 1 is, for example, a substation or a switch, and is a facility having a switch 3 as a part of the electric power facility 2. The switch 3 is a device having a contact portion for turning on / off the power transmission and distribution line 6, and is, for example, a circuit breaker or a disconnector. The control center 4 is a facility having a low-pressure facility 5 provided in the mountains where, for example, an optical line is not open. At the first point, a delay time due to the mechanical operation of the switch 3 occurs between the time when the switch signal for opening and closing the switch 3 is output and the time when the switch 3 completes the operation. At the second point where the opening / closing surge due to the opening / closing operation of the switch 3 is measured, the above-mentioned delay time occurs, which exceeds the time width that can be measured by the measuring device 150, and the opening / closing surge cannot be measured. It was happening.

Therefore, in the measurement synchronization system 10, a clock device whose time is calibrated by radio waves is provided at the first point and the second point, the time is synchronized between the first point and the second point, and the switch 3 is mechanically used. Considering the delay time due to the operation, the opening / closing surge is measured by the measuring device 150 at the second point. As a result, the measuring device 150 can measure the open / close surge within the measurable time width. For example, the measuring device 150 must measure the open / close surge within the measurable time width of "4 seconds", which varies depending on the memory capacity and the measuring range.

FIG. 1 is a configuration diagram showing a measurement synchronization system 10. As shown in FIG. 1, the measurement synchronization system 10 includes a first clock device 110, a second clock device 120, a reception control device 130, a delay calculation device 140, and a measurement device 150. There is. Here, a system including the first clock device 110, the second clock device 120, the reception control device 130, and the delay calculation device 140 will be described below as the "synchronization system 100".

== Synchronization system 100 ==
The synchronization system 100 receives predetermined signals from the first and second clock devices 110 and 120, and by considering the delay time due to the mechanical operation of the switch 3, causes the measuring device 150 to reliably measure the opening / closing surge. It is a system for. As shown in FIG. 1, the synchronization system 100 includes a first clock device 110, a second clock device 120, a reception control device 130, and a delay arithmetic unit 140. Hereinafter, each device will be described.

The first clock device 110 and the second clock device 120 are clock devices installed at the first point and the second point, respectively, and the time is calibrated by radio waves. Specifically, it is a radio clock, a GPS clock, a mobile phone, or the like. The first and second clock devices 110 and 120 have a function of outputting a predetermined signal at a predetermined time. The predetermined signal is, for example, an alarm signal (TTL signal). As shown in FIG. 1, the first and second clock devices 110 and 120 are communicably connected to the reception control device 130 and the delay calculation device 140, respectively, and predetermined signals are sent to the reception control device 130 and the delay calculation device 140, respectively. Is output.

The connection between the first and second clock devices 110 and 120 and the reception control device 130 and the delay calculation device 140 may be either wireless or wired, and is not particularly limited. As a result, the reception control device 130 can output an open / close signal at a predetermined time based on a predetermined signal, and as will be described later, the delay arithmetic unit 140 can output a predetermined signal based on the predetermined signal. The start signal can be output at the time obtained by adding the delay time to the time.

The reception control device 130 is a device installed at a first point and outputs an open / close signal to the switch 3 based on a first signal received from the first clock device 110 at a predetermined time.

FIG. 2 is a diagram showing a hardware configuration of the reception control device 130. As shown in FIG. 2, the hardware of the reception control device 130 includes a processor 131, a memory 132, a storage device 133, an input device 134, an output device 135, and a communication device 136. There is. The processor 131 is, for example, an MPU, a CPU, or the like. The memory 132 is, for example, a RAM, a ROM, an NVRAM, or the like. The storage device 133 is, for example, a RAM, a ROM, an NVRAM, or the like. The input device 134 is a user interface that receives operation input from the user, and is, for example, an operation input device (keyboard, mouse, touch panel, etc.), a voice input device (microphone, etc.), and the like. The output device 135 is a user interface that provides various information to the user, and is, for example, a display device (liquid crystal monitor or the like), an audio output device (speaker or the like), or the like. The communication device 136 is an interface for wireless communication or wired communication for connecting to the first clock device 110 and the control circuit.

FIG. 3 is a diagram showing an example of the software configuration of the reception control device 130. As shown in FIG. 3, the software of the reception control device 130 has a functional unit of an acquisition unit 130a and a first signal output unit 130b. These functional units are realized, for example, by the processor 131 of the reception control device 130 reading and executing the program stored in the memory 132. In addition, these functional units may be realized by hardware such as ASIC. Further, the processor 131 may be realized by reading and executing a program stored in an external storage medium.

The acquisition unit 130a acquires a predetermined signal from the first clock device 110 via the communication device 136.

The first signal output unit 130b outputs an open / close signal to the control circuit that controls the switch 3. Here, the control circuit (not shown) may be either a circuit composed of a relay or a circuit composed of a programmable logic controller, and the circuit configuration is not particularly limited. As a result, the switch 3 starts mechanical operation based on the operation signal from the control circuit. There is a delay time due to the mechanical operation of the switch 3 from the output of the open / close signal from the first signal output unit 130b to the completion of the operation of the switch 3 (opening or closing).

The delay arithmetic unit 140 is installed at the second point, and indicates the measurement start to the measuring device 150 in consideration of the delay time based on the second signal transmitted from the second clock device 120 at a predetermined time. It is a device that outputs a start signal. The predetermined time here is the same time as the time when the first clock device 110 outputs the first signal. As a result, the time can be synchronized between the reception control device 130 and the delay arithmetic unit 140.

FIG. 4 is a diagram showing a hardware configuration of the delay arithmetic unit 140. As shown in FIG. 4, the hardware of the delay arithmetic unit 140 includes a processor 141, a memory 142, a storage device 143, an input device 144, an output device 145, and a communication device 146. There is. The processor 141 is, for example, an MPU, a CPU, or the like. The memory 142 is, for example, a RAM, a ROM, an NVRAM, or the like. The storage device 143 is, for example, a RAM, a ROM, an NVRAM, or the like. The input device 144 is a user interface that receives operation input from the user, and is, for example, an operation input device (keyboard, mouse, touch panel, etc.), a voice input device (microphone, etc.), and the like. The output device 145 is a user interface that provides various information to the user, and is, for example, a display device (liquid crystal monitor or the like), an audio output device (speaker or the like), or the like. The communication device 146 is an interface for wireless communication or wired communication for connecting to the second clock device 120 and the measuring device 150.

FIG. 5 is a diagram showing an example of the software configuration of the delay arithmetic unit 140. As shown in FIG. 5, the software of the delay arithmetic unit 140 has functional units of an acquisition unit 140a, an arrival time calculation unit 140b, and a second signal output unit 140c. These functional units are realized, for example, by the processor 141 of the delay arithmetic unit 140 reading and executing the program stored in the memory 142. In addition, these functional units may be realized by hardware such as ASIC. Further, the processor 141 may be realized by reading and executing a program stored in an external storage medium.

The acquisition unit 140a acquires a predetermined signal from the second clock device 120 via the communication device 146.

The arrival time calculation unit 140b adds the delay time required from when the switch 3 receives the open / close signal to when the switch 3 completes the open / close operation at a predetermined time, and adds an open / close surge generated at the first point. Calculates the arrival time indicating the time when the second point is reached. Here, the delay time will be described with reference to FIG. FIG. 6 is a time chart showing the delay time (Δt). The upper graph of FIG. 6 is a graph in which the time point (time a) at which the reception control device 130 outputs the open / close signal to the switch 3 based on the first signal is plotted as rising “ON”. The lower graph of FIG. 6 is a graph in which the time point (time b) when the switch 3 completes the opening / closing operation after the opening / closing signal is output is plotted as a rising “ON”. That is, the delay time is the difference Δt between the time b and the time a in the graph. Since the delay time differs depending on the specifications of the switch 3, a unique delay time is associated with the specifications of the switch 3 at the first point and recorded in the storage device 143 in advance. The arrival time calculation unit 140b calculates the arrival time by adding the delay time specified above to the predetermined time.

The second signal output unit 140c outputs a start signal indicating the start of measurement to the measuring device 150 so that the measuring device 150 can measure the open / close surge at the arrival time. The second signal output unit 140c measures the timing of outputting the start signal in consideration of the storage capacity of the measuring device 150. Specifically, in the second signal output unit 140c, for example, when the measurable time of the measuring device 150 is "4 seconds", the arrival time at which the open / close surge reaches the measuring device 150 within the measurable time is set. A start signal is output to the measuring device 150 so as to be included. The timing is set in advance in the delay arithmetic unit 140 in consideration of the specifications of the switch 3. As a result, the measuring device 150 can reliably measure the open / close surge generated at the first point at the second point.

The synchronization system 100 may not include the first clock device 110 and the second clock device 120. In this case, if the reception control device 130 and the delay arithmetic unit 140 of the measurement synchronization system 10 are configured to receive the first signal and the second signal from the clock device installed separately from the synchronization system 100. Good.

== Measuring device 150 ==
The measuring device 150 is a device installed at the second point and measures the open / close surge based on the start signal output from the delay arithmetic unit 140. The measuring device 150 is preferably, for example, a memory high coder. Since a memory hicoder generally has a trigger function, a second signal output from the second clock device 120 can be used as a trigger. Further, the measuring device 150 may be a sound detecting device for detecting sound, a light detecting device for detecting light, or an electric field for measuring electric field strength generated in the low pressure equipment 5 due to an opening / closing surge. It may be a measuring device. That is, the measuring device 150 may be a device that detects a phenomenon caused by an opening / closing surge.

The measuring device 150 may be a digital oscilloscope or an analog oscilloscope. The digital oscilloscope may be any of DSO (digital storage oscilloscope), DPO (digital phosphor oscilloscope), MSO (mixed signal oscilloscope), and digital sampling oscilloscope, and is not particularly limited. Digital oscilloscopes are excellent at observing high-speed phenomena.

=== Processing procedure of measurement synchronization system 10 ===
FIG. 7 is a flow chart showing a processing procedure of the measurement synchronization system 10. The processing procedure of the measurement synchronization system 10 will be described with reference to FIG. 7. In the following processing procedure, it is assumed that the step at the first point is started from S10 and the step at the second point is started from S20.

First, the worker sets the signal output time of the first clock device 110 at the first point. Further, the worker sets the signal output time of the second clock device 120 at the second point to the same time as the signal output time of the first clock device 110. As a result, the time can be synchronized between the first point and the second point.

Next, the processing procedure at the first point will be described. First, the first clock device 110 outputs the first signal to the reception control device 130 at a predetermined time set in advance (S10). Since the first clock device 110 is a radio clock or a GPS clock, the first signal can be output at an accurate time. Next, the reception control device 130 receives the first signal (S11). The reception control device 130 outputs an open / close signal to the control circuit that controls the switch 3 when the first signal is received (S12). The control circuit (not shown) opens and closes the switch 3 when the open / close signal is received (S13). In this series of operations, a delay time occurs from the output of the opening / closing signal to the completion of the opening / closing operation of the switch 3.

Next, the processing procedure at the second point will be described. The processing procedure at the second point is a procedure for measuring the open / close surge with the measuring device 150 in consideration of the delay time generated at the first point. First, the second clock device 120 outputs the second signal to the delay arithmetic unit 140 at the same time as the time when the first signal is output (S20). Since the second clock device 120 is a radio clock or a GPS clock like the first clock device 110, it outputs a second signal at an accurate time. Next, the delay arithmetic unit 140 receives the second signal (S21). The delay arithmetic unit 140 identifies the delay time when the second signal is received, and calculates the arrival time at which the open / close surge arrives at the second point (S22). The arrival time is as described above. The delay arithmetic unit 140 outputs a start signal indicating the start of measurement to the measuring device 150 in consideration of the arrival time (S23). Upon receiving the start signal, the measuring device 150 continuously measures the electric quantities of the circuit for a predetermined time (S24). As a result, the measuring device 150 can measure the opening / closing surge generated at the first point and flowing into the second point via the transmission and distribution line 6.

=== Summary ===
As described above, the synchronization system 100 according to the present embodiment is installed at the first point (electric station 1) where the switch 3 connected to the power transmission / distribution line 6 exists, and the time is calibrated by radio waves. A reception control device 130 that outputs an open / close signal to the switch 3 based on the first signal transmitted from the clock device 110 at a predetermined time, and an open / close surge flows through the power transmission / distribution line 6 due to the open / close operation of the switch 3. The delay calculation device 140 includes a delay calculation device 140 that receives a second signal at a predetermined time from a second clock device 120 that is installed at a second point where the control center 4 is located and whose time is calibrated by radio waves. , The delay time required from the switch 3 receiving the switch signal to the completion of the switch operation is added to the predetermined time to calculate the arrival time indicating the time when the switch surge reaches the second point. It has a time calculation unit 140b and a second signal output unit 140c that outputs a start signal indicating the start of measurement to the measurement device 150 so that the measurement device 150 can measure the opening / closing surge that reaches the second point at the arrival time. .. According to the present embodiment, when measuring the open / close surge generated at the first point at the second point, the measuring device 150 can be made to measure at an appropriate measurement timing.

Further, the synchronization system 100 according to the present embodiment is installed at a first point, has a function of calibrating the time by radio waves, and is installed at a first clock device 110 that outputs a first signal and a second point. It further includes a second clock device 120 having a function of calibrating the time with radio waves and outputting a second signal. According to the present embodiment, by incorporating the first clock device 110 and the second clock device 120 into the same system, the unity as a system can be ensured and the versatility can be enhanced.

Further, the first clock device 110 and the second clock device 120 of the synchronization system 100 according to the present embodiment are radio clocks or GPS clocks. According to this embodiment, the cost can be reduced by adopting a general-purpose clock device.

Further, the measurement synchronization system 10 according to the present embodiment receives the start signal output from the synchronization system 100 and the second signal output unit 140c of the synchronization system 100, and performs an opening / closing surge at the second point based on the start signal. A measuring device 150 for measuring is provided. According to this embodiment, by incorporating the measuring device 150 into the same system, the unity as a system can be ensured and the versatility can be enhanced.

Further, the measuring device 150 of the measurement synchronization system 10 according to the present embodiment is a memory hicoder, a digital oscilloscope, or an analog oscilloscope. The memory hicoder has many types of measurement targets and has a trigger function, so it is suitable for this system. Digital oscilloscopes are rich in variety and versatile, so design costs can be reduced. By configuring the analog oscilloscope with the measuring device 150, which has been widely used in the past, the system construction cost can be reduced.

It should be noted that the above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting and interpreting the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention also includes equivalents thereof.

For example, in the above description, the measurement synchronization system 10 for measuring the open / close surge generated at the first point with the measuring device 150 at the second point has been described, but the present invention is not limited to this. For example, the measurement synchronization system 10 may be a system in which the opening / closing surge generated at the first point is similarly measured by the measuring device 150 at the second point and the measuring device 150 at the third point. That is, the reception control device 130 is installed at the first point and the delay arithmetic unit 140 is installed at the other plurality of points so that the open / close surge generated at the first point can be measured at each of the plurality of points. As described above, each delay arithmetic unit 140 calculates the arrival time in consideration of the delay time. As a result, the measuring device 150 at the other plurality of points can measure the open / close surge generated at the first point.

3 Switch 6 Transmission / distribution line 10 Measurement synchronization system 100 Synchronization system 110 1st clock device 120 2nd clock device 130 Reception control device 140 Delay calculation device 140b Arrival time calculation unit 140c 2nd signal output unit 150 Measuring device

Claims (10)

An opening / closing signal is sent to the switch based on a first signal transmitted at a predetermined time from a first clock device which is installed at a first point where a switch connected to a power transmission / distribution line exists and whose time is calibrated by radio waves. The reception control device that outputs
From the second clock device installed at the second point where the control station where the opening / closing surge flows through the power transmission / distribution line due to the opening operation or the closing operation of the switch and the time is calibrated by radio waves, the second clock device is set at the predetermined time. A delay arithmetic unit that receives two signals and
With
The delay arithmetic unit
The time required for the opening / closing surge to reach the second point is indicated by adding the delay time required from the reception of the opening / closing signal to the completion of the opening / closing operation to the predetermined time. The arrival time calculation unit that calculates the arrival time, and
A signal output unit that outputs a start signal indicating the start of measurement to the measuring device so that the switching surge that reaches the second point can be measured at the arrival time.
A synchronization system characterized by having. A first clock device installed at the first point, having a function of calibrating the time by radio waves, and outputting the first signal.
A second clock device installed at the second point, having a function of calibrating the time with radio waves, and outputting the second signal,
The synchronization system according to claim 1, further comprising. The synchronization system according to claim 2, wherein the first clock device and the second clock device are radio clocks. The synchronization system according to claim 2, wherein the first clock device and the second clock device are GPS clocks. The synchronization system according to any one of claims 1 to 4.
A measuring device that receives the start signal output from the signal output unit of the synchronization system and measures the opening / closing surge at the second point based on the start signal.
A measurement synchronization system characterized by being equipped with. The measurement synchronization system according to claim 5, wherein the measuring device is a memory hicoder. The measurement synchronization system according to claim 5, wherein the measuring device is a digital oscilloscope. The measurement synchronization system according to claim 5, wherein the measuring device is an analog oscilloscope. The first computer installed at the first point where the switch connected to the power transmission and distribution line exists
A reception control step of outputting an open / close signal to the switch is executed based on the first signal transmitted from the first clock device calibrated by radio waves at a predetermined time.
A second computer installed at a second point where a control station where an opening / closing surge flows in through the power transmission and distribution line due to an opening operation or a closing operation of the switch is installed.
A reception step of receiving the second signal at the predetermined time from the second clock device calibrated by radio waves, and
The time required for the opening / closing surge to reach the second point is indicated by adding the delay time required from the reception of the opening / closing signal to the completion of the opening / closing operation to the predetermined time. The arrival time calculation step to calculate the arrival time and
A signal output step that outputs a start signal indicating the start of measurement to the measuring device so that the switching surge that reaches the second point can be measured at the arrival time.
A synchronization method characterized by performing. On the computer
A reception control function that outputs an open / close signal to the switch based on the first signal transmitted from the first clock device calibrated by radio waves at a predetermined time.
A reception function that receives the second signal at the predetermined time from the second clock device calibrated by radio waves,
The time required for the opening / closing surge to reach the second point is indicated by adding the delay time required from the reception of the opening / closing signal to the completion of the opening / closing operation to the predetermined time. The arrival time calculation function that calculates the arrival time and
A signal output function that outputs a start signal indicating the start of measurement to the measuring device so that the measuring device can measure the opening / closing surge that reaches the second point at the arrival time.
A program to realize.

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