Power receiving / distributing facility monitoring system

Abstract

To suppress an increase in storage capacity for storing data, and to reduce a network communication load or a load on a server.SOLUTION: A server (101) that acquires a sensor signal from a sensor (104) of a power receiving and distributing facility (105) via a network (102) and monitors the power receiving and distributing facility (105), wherein the server (101) calculates a normal data range based on a sensor signal acquired in the past, compares the sensor signal acquired this time with the normal data range, and when the sensor signal acquired this time does not exceed the normal data range, sets communication timing of acquisition of the sensor signal to a first cycle, when it exceeds the normal data range, the communication timing for acquiring the sensor signal is set to a second cycle shorter than the first cycle.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a power distribution facility monitoring system. [Background technology]

[0002] Factories, buildings, and other facilities that consume large amounts of electricity are equipped with power receiving and distribution equipment that receives high-voltage electricity from power transmission equipment, reduces the voltage of the electricity to an appropriate level, and distributes it to machines and equipment within the facility. The power distribution equipment monitoring system monitors signals and measurement values ​​of various devices that make up the power distribution equipment via a network, and notifies users of information on the operating status of the entire power distribution equipment and the occurrence of any abnormalities. In addition to the existing sensors required for monitoring power distribution equipment, it is expected that new sensors will be added to detect signs of deterioration or abnormalities in the equipment. This will increase the amount of data communication, which is expected to necessitate a review of machine specifications such as server storage capacity for storing data and central processing units (CPUs).

[0003] A prior patent is a power receiving and distribution equipment monitoring system that includes a remote station that acquires information about the power receiving and distribution equipment to be monitored and aggregates the acquired information, a gateway device that acquires the information aggregated by the remote station, and a data center that acquires and stores some of the information acquired by the gateway device via a network, the gateway device periodically monitors whether there is a request from the data center to acquire internal log data, and if there is a request, the gateway device is configured to transmit equipment log data to the data center (see Patent Document 1 below). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 7019479 Summary of the Invention [Problem to be solved by the invention]

[0005] The prior patent has implemented measures to reduce the network load, and data communication is performed when the difference in data exceeds a threshold. However, for sensors whose data values ​​fluctuate to some extent, if the threshold is set too high, data transmission will not be performed at all, making it difficult for the system to detect if a sensor is malfunctioning. Furthermore, if the data threshold is made small, data will be updated frequently, which may not lead to a reduction in network load. There is also no mention of reducing storage capacity, and frequent data updates will require large amounts of storage.

[0006] In a power distribution equipment monitoring system that has the function of detecting deterioration or abnormal signs in power distribution equipment, if you want to check detailed change data when acquiring detailed data from sensors, you need to shorten the communication interval for collecting data.However, shortening the communication interval increases the storage capacity for saving data, which poses a problem of increasing the network communication load or the load on the server.

[0007] The present disclosure discloses technology for solving the above-mentioned problems, and aims to provide a power distribution equipment monitoring system that suppresses an increase in storage capacity for saving data and reduces network communication load or load on the server. [Means for solving the problem]

[0008] The power receiving and distribution equipment monitoring system of the present disclosure comprises: A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a network and monitors the power receiving and distribution equipment, The server calculates a normal data range based on the sensor signal acquired in the past, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for acquiring the sensor signal to a first period, and if the currently acquired sensor signal exceeds the normal data range, sets the communication timing for acquiring the sensor signal to a second period that is shorter than the first period. In addition, the power receiving and distribution equipment monitoring system of the present disclosure includes: A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and a network and monitors the power receiving and distribution equipment, The gateway device calculates a normal data range based on the sensor signal acquired in the past, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for transmitting the sensor signal to the server at a first cycle, and if the normal data range is exceeded, sets the communication timing for transmitting the sensor signal to the server at a second cycle that is shorter than the first cycle. In addition, the power receiving and distribution equipment monitoring system of the present disclosure includes: A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a network and monitors the power receiving and distribution equipment, the sensor comprises a first sensor for acquiring a first sensor signal and a trigger sensor for acquiring a trigger signal associated with the first sensor signal; The server determining whether the trigger signal satisfies a trigger condition; If the trigger condition is not satisfied, the communication timing for acquiring the first sensor signal is set to a first cycle; When the trigger condition is satisfied, the communication timing for acquiring the first sensor signal is set to a second cycle that is shorter than the first cycle. In addition, the power receiving and distribution equipment monitoring system of the present disclosure includes: A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and the network and monitors the power receiving and distribution equipment, The gateway device determining whether the trigger signal satisfies a trigger condition; If the trigger condition is not satisfied, the gateway device sets a communication timing for transmitting the first sensor signal to the server to a first cycle; When the trigger condition is satisfied, the gateway device sets the communication timing for transmitting the first sensor signal to the server to a second cycle that is shorter than the first cycle. [Effects of the Invention]

[0009] According to the power receiving and distribution equipment monitoring system of the present disclosure, it is possible to suppress an increase in storage capacity for saving data, and also to reduce the network communication load or the load on the server. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram showing a schematic configuration of a power receiving and distribution facility monitoring system according to a first embodiment. [Figure 2] FIG. 3 is a block diagram showing a schematic configuration of another power receiving and distribution facility monitoring system according to the first embodiment. [Figure 3] 3 is a diagram showing a setting table for holding communication intervals of sensor signals in the power receiving and distribution equipment monitoring system according to the first embodiment. FIG. [Figure 4] 3 is a block diagram showing a configuration of a sensor signal acquisition period setting unit according to the first embodiment. FIG. [Figure 5]4 is a flowchart for explaining setting of a sensor signal acquisition period according to the first embodiment. [Figure 6] FIG. 10 is a setting table for changing a communication interval depending on a trigger condition according to the second embodiment. [Figure 7] FIG. 10 is a block diagram showing a configuration of a sensor signal acquisition period setting unit according to a second embodiment. [Figure 8] 10 is a flowchart for explaining setting of a sensor signal acquisition period according to the second embodiment. [Figure 9] FIG. 13 is a block diagram showing a configuration of a server transmission period setting unit according to a first example of the third embodiment. [Figure 10] 13 is a flowchart illustrating setting of a server transmission period according to a first example of the third embodiment. [Figure 11] FIG. 13 is a block diagram showing a configuration of a server transmission period setting unit according to a second example of the third embodiment. [Figure 12] 13 is a flowchart illustrating setting of a server transmission period according to a second example of the third embodiment. [Figure 13] 11 is a flowchart for transmitting to a server at a server transmission period according to the third embodiment. [Figure 14] FIG. 1 is a block diagram showing an example of hardware for realizing an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiment 1 FIG. 1 is a block diagram showing a schematic configuration of a power receiving and distribution facility monitoring system according to the first embodiment. The power receiving and distribution facility monitoring system shown in Fig. 1 includes a power receiving and distribution facility 105 equipped with a plurality of sensors 104, a gateway device 103 connected to the sensors 104 equipped in the power receiving and distribution facility 105 via a signal line L1, a network 102 to which the gateway device 103 is connected via a signal line L2, and a server 101 connected to the network 102. In Fig. 1, the gateway device 103 is abbreviated as GW (GateWay) 103. A sensor signal (data) acquired by a sensor 104 of the power receiving and distribution facility 105 is transmitted to the gateway device 103 via a signal line L1. The gateway device 103 has a relay function of transmitting data acquired by the sensor 104 to the server 101 via the signal line L2 and the network 102. The gateway device 103 also has an interface function for connecting the sensor 104 and the server 101 and a routing function. The server 101 plays a role of aggregating data transmitted from the gateway device 103 and storing the data. The network 102 serves as a path for transmitting data from the gateway device 103 and the sensor 104 to the server 101 . The network 102 may be either wired or wireless, and the server 101 may be installed in a factory or in a remote location.

[0012] In the power distribution equipment monitoring system of Figure 1, the server 101 is configured to communicate with the sensor 104 via the gateway device 103, but as shown in Figure 2, the sensor 104 is connected to the network 102 via the signal line L3, and it is also possible for the server 101 and the sensor 104 to communicate directly without going through the gateway device 103.

[0013] FIG. 3 is a diagram showing a setting table for holding communication intervals in the power receiving and distribution equipment monitoring system according to the first embodiment. That is, FIG. 3 shows a setting table in which the server 101 holds the communication interval (sampling period) for communicating with the sensor 104. The setting table in FIG. 3 defines a list of sensor signals 106 acquired by the sensor 104 and a communication interval (ms) 107 of each sensor signal 106. The setting table in FIG. 3 is held by the server 101, and the communication interval with the sensor 104 can be dynamically changed by rewriting the values ​​in the table through a user operation or at a required timing.

[0014] In this embodiment, the server 101 automatically changes the communication interval for acquiring the sensor signal from the sensor 104 depending on the status of the power receiving and distribution equipment monitoring system. That is, the server 101 calculates a normal data range based on a sensor signal acquired in the past, compares the sensor signal acquired this time with the normal data range, and if the normal data range is not exceeded, sets the communication timing for acquiring the sensor signal to a first cycle (long cycle), and if the normal data range is exceeded, sets the communication timing for acquiring the sensor signal to a second cycle (short cycle) that is shorter than the first cycle.

[0015] FIG. 4 is a block diagram showing a configuration of the sensor signal acquisition period setting unit according to the first embodiment. The sensor signal acquisition period setting unit 300 in FIG. 4 is installed in the server 101 and includes a sensor signal acquisition unit 301 , a normal data range calculation unit 302 , a sensor signal comparison unit 303 , and a next acquisition period setting unit 304 . The sensor signal acquisition unit 301 has a function of acquiring a sensor signal at each communication interval set by the setting table of FIG. The normal data range calculation unit 302 has a function of calculating a normal data range based on the sensor signals acquired in the past. The sensor signal comparison unit 303 has a function of comparing the currently acquired sensor signal with the normal data range calculated by the normal data range calculation unit 302 . The next acquisition cycle setting unit 304 has a function of setting the communication timing for acquiring the sensor signal to a first cycle (long cycle) if the currently acquired sensor signal does not exceed the normal data range, and setting the communication timing for acquiring the sensor signal to a second cycle (short cycle) that is shorter than the first cycle if the currently acquired sensor signal exceeds the normal data range.

[0016] FIG. 5 is a flowchart illustrating setting of the sensor signal acquisition period according to the first embodiment. In step S001, the server 101 acquires a sensor signal at each communication interval set in the setting table of FIG. In the normal data range calculation step S002, the normal data range (normal distance) s is calculated based on, for example, the following equation (1).

[0017]

number

[0018] In the sensor signal comparison step of step S003, the sensor signal xp acquired this time and the normal data range (normal distance) s calculated in the normal data range calculation step of step S002 are used to determine whether the data is in the normal data range or an abnormal data range using the following equation (2). Here, the coefficient α can be used to adjust the appropriate value for the normal data range (normal distance) according to various sensor signals, thereby changing the communication interval. It is also possible to prepare multiple coefficients of α, set levels for abnormal states outside the normal data range, and select a communication interval according to each abnormality level.

[0019]

number

[0020] In step S004, which is the next acquisition cycle setting step, if the sensor signal acquired this time does not exceed the normal data range, the communication timing for acquiring the sensor signal is set to a first cycle (long cycle), and if the sensor signal exceeds the normal data range, the communication timing for acquiring the sensor signal is set to a second cycle (short cycle) that is shorter than the first cycle.

[0021] As described above, according to the first embodiment, A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a network and monitors the power receiving and distribution equipment, The server calculates a normal data range based on the sensor signal previously acquired, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for acquiring the sensor signal to a first cycle, and if the currently acquired sensor signal exceeds the normal data range, sets the communication timing for acquiring the sensor signal to a second cycle that is shorter than the first cycle. When the sensor signal state is abnormal and exceeds the normal data range, it is necessary for data analysis, so it is collected at the second cycle, which has a short period, and when it is normal, it is collected at the first cycle, which has a long communication interval, which reduces network load, server storage capacity, and load on the server CPU (Central Processing Unit). In addition, application of this technology to paid networks such as cloud services or VPN (Virtual Private Network) services, which are subject to pay-per-use charges or communication restrictions, can also lead to reduced running costs in system operation.

[0022] Embodiment 2 The power distribution equipment monitoring system according to the second embodiment has a configuration similar to that shown in the block diagram of FIG. 1, and includes a power distribution equipment 105 equipped with a sensor 104, and a server 101 that acquires a sensor signal from the sensor 104 equipped in the power distribution equipment 105 via a gateway device 103 and a network 102 and monitors the power distribution equipment. The power receiving and distribution equipment monitoring system of the second embodiment may also be configured such that the server 101 communicates directly with the sensor 104 via the network 102 but not via a gateway device, as shown in FIG.

[0023] In the second embodiment, the sensor 104 installed in the power receiving and distribution equipment 105 includes a first sensor that acquires a first sensor signal and a second sensor that acquires a trigger signal related to the first sensor signal, and determines whether the trigger signal acquired by the second sensor satisfies a trigger condition. If the trigger condition is not satisfied, the communication timing for acquiring the first sensor signal of the first sensor is set to a normal first period, and if the trigger condition is satisfied, the communication timing for acquiring the first sensor signal of the first sensor is set to a second period that is shorter than the first period.

[0024] FIG. 6 is a diagram illustrating a setting table for changing a communication interval based on a trigger condition according to the second embodiment. The setting table in Figure 6 sets a list of signal numbers (No.) of first sensor signals 201, a communication interval (ms) 202 for acquiring first sensor signals 201, a signal number (No.) of trigger signals 203 associated with first sensor signals 201, a trigger value 204 that is the threshold value of the trigger condition of trigger signal 203, a trigger determination condition 205 that determines whether trigger signal 203 satisfies the trigger condition, and a post-trigger communication interval (ms) 206 of first sensor signal 201 when the trigger condition is satisfied.

[0025] FIG. 7 is a block diagram showing a configuration of a sensor signal acquisition period setting unit according to the second embodiment. The sensor signal acquisition period setting unit 500 in FIG. 7 is installed in the server 101 and includes a sensor signal acquisition unit 501, a trigger condition determination unit 502, and a next acquisition period setting unit 503. The sensor signal acquisition unit 501 has a function of acquiring the first sensor signal 201 at each communication interval 202 set by the setting table of FIG. The trigger condition determination unit 502 has a function of determining whether the trigger signal 203 related to the first sensor signal 201 satisfies the trigger condition. If the trigger signal 203 does not satisfy the trigger condition, the next acquisition period setting unit 503 maintains the communication timing for acquiring the first sensor signal 201 in the state indicated by the communication interval 202, i.e., maintains the state of the first period (long period); if the trigger condition is satisfied, the next acquisition period setting unit 503 sets the communication timing for acquiring the first sensor signal 201 to a second period (short period) shorter than the first period (communication interval 202), i.e., the post-trigger communication interval 206.

[0026] Here, a specific example of changing the communication interval based on the trigger condition of the second embodiment will be described with reference to FIG. 6, signal number 001 of first sensor signal 201 and its communication interval 202 are set to 1000 (ms). Signal number 101 is set as trigger signal 203. Here, it is assumed that signal number 101 is an abnormal heating signal in power receiving and distribution equipment 105, and that the abnormal heating signal is 1 when ON and 0 (zero) when OFF. When the abnormal heating signal is ON and 1, it is equal to 1 shown in trigger value 204, and trigger determination condition 205 is satisfied, so post-trigger communication interval 206 is changed to 500 (ms). 6, signal number 004 of first sensor signal 201 and its communication interval 202 of 3000 (ms) are set. Signal number 104 is set as trigger signal 203. Assume that signal number 104 is the humidity value (%) in power receiving and distribution equipment 105. If the humidity value is 80% (trigger value 204) or higher, trigger determination condition 205 is met, and post-trigger communication interval 206 is changed to 1000 (ms). Because high humidity in power receiving and distribution equipment 105 can cause a short circuit, the monitoring interval for the zero-phase current in power receiving and distribution equipment 105 can be changed to a shorter period to check for signs of a ground fault.

[0027] FIG. 8 is a flowchart illustrating setting of the sensor signal acquisition period according to the second embodiment. In step S006, which is a sensor signal acquisition step, server 101 acquires a sensor signal at each communication interval set in the setting table of FIG. In step S007, a trigger condition determination step, it is determined whether the trigger signal 203 satisfies the trigger condition. In the next acquisition cycle setting step of step S008, if the trigger signal 203 does not satisfy the trigger condition, the communication timing for acquiring the first sensor signal 201 is set to a first cycle (long cycle), and if the trigger condition is satisfied, the communication timing for acquiring the first sensor signal 201 is set to a second cycle (short cycle) that is shorter than the first cycle.

[0028] As described above, according to the second embodiment, A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and a network and monitors the power receiving and distribution equipment, The gateway device calculates a normal data range based on the sensor signal previously acquired, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for transmitting the sensor signal to the server at a first cycle, and if the normal data range is exceeded, sets the communication timing for transmitting the sensor signal to the server at a second cycle that is shorter than the first cycle. For example, if it is possible to identify in advance the sensors (trigger sensors) that are correlated with abnormalities or deterioration of the first sensor, and if the trigger sensor detects signs of a certain abnormality or deterioration, it is possible to change the communication interval of the first sensor to a second cycle, which is a shorter cycle, and accumulate more detailed data, which can then be used to confirm signs of abnormalities or deterioration of the first sensor. It is also possible to set the trigger sensor to be the same as the first sensor, and for example, when the first sensor, which is the trigger sensor, exceeds a certain threshold value, the first sensor signal can be acquired at a short second cycle.

[0029] Embodiment 3 In the first embodiment, the server calculates a normal data range based on previously acquired sensor signals, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for acquiring the sensor signal from the server to a first cycle, but if the currently acquired sensor signal exceeds the normal data range, sets the communication timing for acquiring the sensor signal from the server to a second cycle that is shorter than the first cycle. In addition, in the second embodiment, the server determines whether the trigger signal satisfies the trigger condition, and if the trigger condition is not satisfied, the communication timing of the server for acquiring the first sensor signal is set to a first period, and if the trigger condition is satisfied, the communication timing of the server for acquiring the first sensor signal is set to a second period that is shorter than the first period.

[0030] In the third embodiment, the gateway device calculates a normal data range based on a sensor signal acquired in the past, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing at which the gateway device transmits the first sensor signal to the server to a first cycle, whereas if the currently acquired sensor signal exceeds the normal data range, sets the communication timing at which the gateway device transmits the first sensor signal to the server to a second cycle that is shorter than the first cycle. In addition, in the third embodiment, the gateway device determines whether or not the trigger signal satisfies a trigger condition, and if the trigger condition is not satisfied, the gateway device sets the communication timing for transmitting the first sensor signal to the server to a first period, and if the trigger condition is satisfied, the gateway device sets the communication timing for transmitting the first sensor signal to the server to a second period that is shorter than the first period.

[0031] The configuration of the power receiving and distribution facility monitoring system according to the third embodiment is similar to the configuration shown in FIG. In the third embodiment, the server 101 does not acquire information from the sensor 104 itself, but the gateway device 103 transmits a sensor signal to the server 101 . The gateway device 103 and the sensor 104 constantly communicate with each other at a third cycle that is equal to or shorter than the second cycle, and the communication interval for transferring data from the gateway device 103 to the server 101 is switched from the first cycle (long cycle) to the second cycle (short cycle).

[0032] FIG. 9 is a block diagram showing a configuration of a server transmission period setting unit according to a first example of the third embodiment. The server transmission period setting unit 600 in FIG. 9 is installed in the gateway device 103 and includes a sensor signal acquisition unit 601 , a normal data range calculation unit 602 , a sensor signal comparison unit 603 , and a next server transmission period setting unit 604 . The sensor signal acquisition unit 601 has a function of acquiring a sensor signal at each communication interval set according to the setting table of FIG. The normal data range calculation unit 602 has a function of calculating a normal data range based on the sensor signals acquired in the past. The sensor signal comparison unit 603 has a function of comparing the currently acquired sensor signal with the normal data range calculated by the normal data range calculation unit 302 . The next server transmission cycle setting unit 604 has the function of setting the communication timing of transmission to the server 101 to a first cycle (long cycle) if the sensor signal acquired this time does not exceed the normal data range, and setting the communication timing of transmission to the server 101 to a second cycle (short cycle) that is shorter than the first cycle if the sensor signal acquired this time does not exceed the normal data range.

[0033] FIG. 10 is a flowchart illustrating setting of the server transmission period according to a first example of the third embodiment. In step S101, which is a sensor signal acquisition step, the gateway device 103 acquires a sensor signal at each communication interval set in the setting table of FIG. In step S102, a normal data range calculation step, the normal data range (normal distance) s is calculated based on, for example, the above-mentioned formula (1).

[0034] In the sensor signal comparison step of step S103, the sensor signal xp acquired this time and the normal data range (normal distance) s calculated in the normal data range calculation step of step S102 are used to determine whether the data is in the normal data range or an abnormal data range using the above equation (2). Here, the coefficient α can be used to adjust the appropriate value for the normal data range (normal distance) according to various sensor signals, thereby changing the communication interval. It is also possible to prepare multiple coefficients of α, set levels for abnormal states outside the normal data range, and select a communication interval according to each abnormality level.

[0035] In the next server transmission cycle setting step of step S104, if the currently acquired sensor signal does not exceed the normal data range, the communication timing of transmission from the gateway device 103 to the server 101 is set to a first cycle (long cycle), and if the currently acquired sensor signal exceeds the normal data range, the communication timing of transmission from the gateway device 103 to the server 101 is set to a second cycle (short cycle) that is shorter than the first cycle. Then, as shown in step S301 of FIG. 13, the gateway device 103 transmits to the server 101 at the server transmission cycle set in step S104.

[0036] FIG. 11 is a block diagram showing a configuration of a server transmission period setting unit according to a second example of the third embodiment. The server transmission period setting unit 700 in FIG. 11 is installed in the gateway device 103 and includes a sensor signal acquisition unit 701 , a trigger condition determination unit 702 , and a next server transmission period setting unit 703 . The sensor signal acquisition unit 701 has a function of acquiring the first sensor signal by constantly communicating at a third period that is equal to or shorter than the second period. The trigger condition determination unit 702 has a function of determining whether the trigger signal 203 related to the first sensor signal 201 satisfies the trigger condition. If the trigger signal 203 does not satisfy the trigger condition, the next server transmission period setting unit 703 maintains the communication timing of transmission from the gateway device 103 to the server 101 in the state indicated by the communication interval 202, i.e., maintains the state of the first period (long period); if the trigger condition is satisfied, the next server transmission period setting unit 703 sets the communication timing of acquiring the first sensor signal 201 to a second period (short period) shorter than the first period (communication interval 202), i.e., the post-trigger communication interval 206.

[0037] FIG. 12 is a flowchart illustrating setting of the server transmission period according to a second example of the third embodiment. In step S201, which is a sensor signal acquisition step, the gateway device 103 acquires a first sensor signal by constantly communicating at a third period that is equal to or shorter than the second period. In step S202, a trigger condition determination step, it is determined whether the trigger signal 203 satisfies the trigger condition. In the next server transmission period setting step of step S203, if the trigger signal 203 does not satisfy the trigger condition, the communication timing of transmission from the gateway device 103 to the server 101 is set to a first period (long period), and if the trigger condition is satisfied, the communication timing of transmission from the gateway device 103 to the server 101 is set to a second period (short period) that is shorter than the first period. Then, as shown in step S301 of FIG. 13, the gateway device 103 transmits to the server 101 at the server transmission cycle set in step S203.

[0038] As described above, the third embodiment is as follows: A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and a network and monitors the power receiving and distribution equipment, The gateway device calculates a normal data range based on the sensor signal previously acquired, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for transmitting the sensor signal to the server at a first cycle, and if the normal data range is exceeded, sets the communication timing for transmitting the sensor signal to the server at a second cycle that is shorter than the first cycle. Also, a power receiving and distribution equipment monitoring system including a power receiving and distribution equipment equipped with a sensor, and a server that acquires a sensor signal from the sensor equipped in the power receiving and distribution equipment via a gateway device and the network and monitors the power receiving and distribution equipment, The gateway device determining whether the trigger signal satisfies a trigger condition; If the trigger condition is not satisfied, the gateway device sets a communication timing for transmitting the first sensor signal to the server to a first cycle; When the trigger condition is satisfied, the gateway device sets a communication timing for transmitting the first sensor signal to the server at a second cycle that is shorter than the first cycle. In the first and second embodiments, if the communication interval between the server and the sensor is set to the long first cycle, there is a possibility that instantaneous change (abnormality) signals may be missed. However, in the third embodiment, communication is always maintained between the gateway device and the sensor at the short third cycle, making it possible to immediately send signals to the server in the event of an abnormality, thereby enabling the construction of a system that can reduce storage capacity and network or server CPU load.

[0039] The sensor signal acquisition period setting unit 300, the sensor signal acquisition period setting unit 500, the server transmission period setting unit 600, and the server transmission period setting unit 700 described in the first to third embodiments are configured with a processor 1000 and a storage device 1010, as shown in an example of hardware in Fig. 14. The storage device 1010 includes a volatile storage device such as a random access memory and a non-volatile auxiliary storage device such as a flash memory, both not shown. Furthermore, a hard disk auxiliary storage device may be included instead of the flash memory. The processor 1000 executes a program input from the storage device 1010. In this case, the program is input from the auxiliary storage device to the processor 1000 via the volatile storage device. The processor 1000 may also output data such as calculation results to the volatile storage device of the storage device 1010, or may store the data in the auxiliary storage device via the volatile storage device.

[0040] Although the present disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to application to a particular embodiment, but may be applied to the embodiments alone or in various combinations. Therefore, countless variations not exemplified are conceivable within the scope of the technology disclosed in this specification, including, for example, cases where at least one component is modified, added, or omitted, and cases where at least one component is extracted and combined with components of another embodiment. [Explanation of symbols]

[0041] 101 server, 102 network, 103 gateway device, 104 Sensor, 105 Power receiving and distribution equipment, 201 First sensor signal, 202 Communication interval, 203 trigger signal, 204 trigger value, 205 trigger determination condition, 206 Post-trigger communication interval, 300 Sensor signal acquisition period setting unit, 301 sensor signal acquisition unit, 302 normal data range calculation unit, 303 sensor signal comparison unit, 304 next acquisition period setting unit, 500: Sensor signal acquisition period setting unit; 501: Sensor signal acquisition unit; 502 trigger condition determination unit, 503 next acquisition period setting unit, 600 server transmission period setting unit, 601 sensor signal acquisition unit, 602 normal data range calculation unit, 603 sensor signal comparison unit, 604 next server transmission cycle setting unit, 700 server transmission cycle setting unit, 701 sensor signal acquisition unit, 702 trigger condition determination unit, 703 Next server transmission period setting unit.

Claims

1. A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a network and monitors the power receiving and distribution equipment, The server calculates a normal data range based on the sensor signal acquired in the past, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing for acquiring the sensor signal to a first cycle, and if the currently acquired sensor signal exceeds the normal data range, sets the communication timing for acquiring the sensor signal to a second cycle that is shorter than the first cycle.

2. The power receiving and distribution facility monitoring system according to claim 1 , wherein the server acquires the sensor signal from the sensor mounted on the power receiving and distribution facility via a gateway device and the network.

3. A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and a network and monitors the power receiving and distribution equipment, The gateway device calculates a normal data range based on the sensor signal acquired in the past, compares the currently acquired sensor signal with the normal data range, and if the currently acquired sensor signal does not exceed the normal data range, sets the communication timing at which the gateway device transmits the sensor signal to the server to a first cycle, but if the normal data range is exceeded, sets the communication timing at which the gateway device transmits the sensor signal to the server to a second cycle that is shorter than the first cycle.

4. The power receiving and distribution facility monitoring system according to claim 3 , wherein the gateway device sets a communication timing for acquiring the sensor signal from the sensor to a third period that is equal to or shorter than the second period.

5. A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a network and monitors the power receiving and distribution equipment, the sensor comprises a first sensor for acquiring a first sensor signal and a trigger sensor for acquiring a trigger signal associated with the first sensor signal; The server determining whether the trigger signal satisfies a trigger condition; If the trigger condition is not satisfied, the communication timing for acquiring the first sensor signal is set to a first cycle; When the trigger condition is satisfied, the communication timing for acquiring the first sensor signal is set to a second cycle that is shorter than the first cycle.

6. The power receiving and distribution facility monitoring system according to claim 5 , wherein the server acquires the sensor signal from the sensor mounted on the power receiving and distribution facility via a gateway device and the network.

7. A power receiving and distribution equipment monitoring system including: a power receiving and distribution equipment having a sensor mounted thereon; and a server that acquires a sensor signal from the sensor mounted on the power receiving and distribution equipment via a gateway device and the network and monitors the power receiving and distribution equipment, The gateway device determining whether the trigger signal satisfies a trigger condition; If the trigger condition is not satisfied, the gateway device sets a communication timing for transmitting the first sensor signal to the server to a first cycle; When the trigger condition is satisfied, the gateway device sets the communication timing for transmitting the first sensor signal to the server to a second cycle that is shorter than the first cycle.

8. The power receiving and distribution equipment monitoring system according to claim 7 , wherein the gateway device sets a communication timing for acquiring the first sensor signal from the first sensor to a third period that is equal to or shorter than the second period.

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