KR101880660B1 - Substation monitoring system - Google Patents

Abstract

The present invention relates to an electric power facility monitoring system in an underground space where a plurality of smart sensors can be installed in various facilities and cables constituted in an underground joint and can monitor substation facilities at low cost. A first communication module for transmitting the measured value to the outside, a lamp module for informing of the abnormality of the line, and a sensor module for measuring a signal of the sensor module, the first communication module, and the lamp module An abnormality detector provided with a control module for controlling the operation and installed at predetermined intervals along the line; A second communication module for transmitting information to the abnormality detector and the external terminal, a determination module for determining whether the line is abnormal by comparing a signal measurement value transmitted from the abnormality detector with a preset value, And a main control unit for controlling operations of the second communication module, the determination module, and the database. And a user terminal that executes the transmission facility monitoring system and provides the user with the line information transmitted from the management server.

Description

[0001] Substation monitoring system [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substation surveillance system, and more particularly, to a power facility surveillance system in an underground substation capable of monitoring a substation substation at a low cost by installing a plurality of smart sensors in various facilities and cables constituted in an underground will be.

Due to the complicated living conditions of modern society, the common living facilities, plant production facilities, and hazardous facilities are inevitably crowded in specific areas, and living facilities such as power, communication, gas, district heating, It is gathered in a collective area and is in a trend of collective installation. Recently, charging facilities for charging electric vehicles are also required to be installed in underground parking lots of apartment buildings and public buildings, and a variety of electric power facilities are installed and operated in an underground space.

In this way, underground public areas of buildings are treated with various kinds of facilities, and because they are very important facilities for society, when a disaster occurs, a huge amount of damage spreads to the whole society. However, due to the fact that it is difficult to expect the efficiency of the maintenance work due to the excessive stay of moisture and dust, the change of various air currents, It is not possible to install a proper alarm processing system.

In addition, due to the undergroundization of electric power facilities, difficulties such as maintenance of equipment, detection of accident occurrence, identification of accident status, suppression of spread, suppression and so forth occur, causing economic loss due to loss of facilities and facilities in case of an accident, Paralysis of economic activity results in the loss of astronomical scale.

As a result, it is necessary to provide a technology to cope with large-scale accidents in advance by making it possible to network the sensing means for detecting various causes of accidents in the underground joint facility and real- To this end, Korean Patent No. 10-1529563 discloses a wireless sensor network environment in which a plurality of smart sensors are installed in various cables and facilities installed in an underground junction, measures the current state in a smart sensor, and flashes an LED lamp And provides an underground electric power facility management system that enables monitoring of abnormal conditions from a remote place by sending an abnormal state value to a remote place.

However, there is a disadvantage in that the installation and operation cost is high because the gateway system using the smart sensor of the above literature uses the Internet communication network. In addition, the system of the above-mentioned prior art has a disadvantage in that it is possible to check an abnormal state only at a corresponding position through a smart sensor attached to a specific position.

Korean Registered Patent No. 10-1529563 (Registered May, 2015, Registered, Transmission Facility using Mesh Network Smart Sensor and Power Plant Tailor System for Underground Joint)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a wireless sensor network environment in which a plurality of smart sensors are installed in various cables and facilities installed in an underground cavity, The present invention aims to provide a substation monitoring system of an underground collecting facility that allows an LED to be checked on the spot by blinking an LED when the occurrence of an abnormality is detected,

It is another object of the present invention to provide a substation surveillance system of an underground junction which is low in installation and operation cost.

It is still another object of the present invention to provide a substation monitoring system of an underground collecting structure that detects an abnormality symptom along the entire facility section to prevent occurrence of an abnormality.

According to an aspect of the present invention, there is provided a substation monitoring system of a underground space including a sensor module for measuring a signal of a line, a first communication module for transmitting a measured value to the outside, An abnormality detector comprising: a lamp module; a control module for controlling operations of the sensor module, the first communication module, and the lamp module; A second communication module for transmitting information to the abnormality detector and the external terminal, a determination module for determining whether the line is abnormal by comparing a signal measurement value transmitted from the abnormality detector with a preset value, And a main control unit for controlling operations of the second communication module, the determination module, and the database. And a user terminal that executes the transmission facility monitoring system and provides the user with the line information transmitted from the management server.

The first communication module may include an NB-IoT communication module that transmits information by loading information in one resource block, which is a minimum unit of resource allocation in the LTE communication module. And may be configured to transmit information using an existing guard band.

Further, the lamp module may further include a lamp for indicating an abnormality of the line at a neighboring position.

In addition, the determination module may be configured such that the signal measurement value and the set value transmitted from the anomaly detector are used as basic elements, the distance information between the anomaly information of the neighboring position of the line and the adjacent position is used as an additional element, And to judge whether or not the signal measurement value is abnormal.

A wireless sensor network environment is constructed by installing a plurality of smart sensors in various cables and facilities installed in the above-described underground openings, and the smart sensor is used to measure the current state, And the abnormal state can be transmitted to the remote site and the present abnormal state can be monitored remotely.

Further, since the information of the abnormality detector installed in the line is transmitted to the management server through the NB-IoT communication module, no separate facility construction is required for communication, and the information transmission cost is low, And has an inexpensive effect.

Further, according to the present invention, it is possible to simultaneously check the abnormal information of neighboring positions of the line with respect to the entire facility section, so that it is possible to prevent occurrence of an abnormality with respect to the entire position.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram illustrating a substation installation of an underground joint equipped with an abnormal sensor according to an embodiment of the present invention;
2 is a conceptual diagram illustrating a substation monitoring system according to an embodiment of the present invention.
FIG. 3 is a block diagram showing a main configuration of the abnormality detector, which is the main part of FIG. 2. FIG.
4 is a block diagram showing a main configuration of a management server which is a main part of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a conceptual diagram illustrating a substation monitoring system according to an embodiment of the present invention. FIG. 3 and FIG. 4 are diagrams illustrating a substation monitoring system according to an embodiment of the present invention. 2 is a block diagram showing the major components of the main detector abnormality detector and the management server.

First, as shown in FIG. 1, the abnormal sensor 100 of the present invention is installed on the surface of a line 1 installed in an underground cavity, and acquires information on the temperature of the line 1, ambient humidity, , And indicates whether or not it is abnormal. The abnormality detector 100 may include at least one of a temperature sensor, a humidity sensor, and a gas sensor, and a plurality of the sensors may be installed at predetermined intervals according to the length of the line 1. [

For example, the line 1 may be a power line of the substation, and the abnormal sensor 100 may be a complex sensor module including a temperature sensor, a humidity sensor, and a gas sensor. In general, since the underground lines 1 are bonded at intervals of 300 meters and the temperature rise at the bonding sites is large, a plurality of the abnormality detectors 100 may be installed at intervals of 300 meters at a position where bonding is performed. , The temperature of the line 1, and the like. Each of the abnormality detectors 100 may be installed at different intervals depending on the environment of the underground cavity or the type or environment of the constructed line.

Information such as temperature, humidity, and gas distribution detected by the abnormality detector 100 is transmitted to the management server 200 of the control room so that the integrated management can be performed to detect an abnormality and prevent an accident.

Meanwhile, the substation monitoring system of the underground space according to the embodiment of the present invention includes a plurality of anomaly detectors 100 installed in a line of an underground community, a management server (hereinafter, referred to as " And a user terminal 300 that receives information on the abnormality of the line from the management server 200 and provides the information to the field manager. Information is transmitted between the abnormality detector 100, the management server 200, and the user terminal 300 using a network communication network. For example, the network communication network may be an installed LTE repeater 400.

As shown in FIGS. 1 to 3, the abnormality detectors 100 are installed at predetermined intervals along the line 1. In addition to the line 1, the abnormality detector 100 may be installed in a variety of facilities to be detected, and a plurality of the abnormality detectors 100 are installed according to the length of the line, the type of facility, and the location of the line. Each anomaly detector 100 has unique identification information to be distinguished from the other anomaly detectors.

The abnormality detector 100 includes a sensor module 120 for detecting the temperature of the line 1, a lamp module 130 for notifying the status or abnormality of the line, a first communication Module 140 and a control module 110 for controlling the operation of the sensor module, the lamp module and the first communication module.

The sensor module 120 includes a temperature sensor, a humidity sensor, and a gas sensor. The sensor module 120 measures the temperature of the line surface, the humidity around the line, the gas distribution around the line, and the like. The sensor module 120 may further include a sensor for collecting various information in addition to temperature, humidity, and gas. A value measured by the sensor module 120 is transmitted to the management server 200 by the controller 110.

The lamp module 130 is configured to display an alarm according to information transmitted from the management server 200, and may be configured as an LED lamp. The lamp module 130 may include a plurality of LED lamps, and may include a first LED lamp 131, a second LED lamp 132, and a third LED lamp 133, for example. The first LED lamp 131 indicates an abnormality with respect to a position where the abnormality detector 100 is installed, that is, a nth position with respect to the longitudinal line 1, and the second LED lamp 132 indicates an abnormality The third LED lamp 133 indicates whether or not the detector 100 is located at the neighboring back position, that is, when the n + 1th detector 100 is installed Indicates whether the position is abnormal. The lamp module 130 may include a plurality of LED lamps for indicating the presence or absence of a plurality of neighboring positions in one direction.

As described above, the lamp module 130 is configured to simultaneously display not only the abnormality detector at the corresponding position but also the abnormality measured at the abnormality detector neighboring in the back and forth direction. In general, when an abnormality occurs in a line, the abnormal signal has a characteristic of transitioning along the line. Therefore, by indicating whether the lamp module 130 is abnormal with respect to a plurality of neighboring positions, it is possible to know the direction in which the abnormal signal transits, and the manager can detect an abnormal signal Appropriate measures can be taken to prevent metastasis.

The lamp module 130 is configured to emit light of different colors such as green, yellow, and red according to the information of the abnormality. The hue may vary depending on the preliminary step, the attention step, the serious step, and the like. For example, the hue may be configured to indicate a preliminary step, a yellow step, and a severe step, respectively. Each step is determined and transmitted by the management server 200 according to the measured value and the set value.

The first communication module 140 transmits and receives information between the abnormality detector 100 and the management server 200. The first communication module 140 transmits a value measured by the sensor module 120 at all times to the management server 200, And receives information on the abnormality transmitted from the server 200. The first communication module 140 is configured as a communication unit that can use a communication network installed for communication of a portable terminal such as a smart phone. Therefore, the construction of the wired / wireless communication equipment is not required for the information transmission between the abnormality detector 100 and the management server 200, and the communication unit can be simply installed in the abnormality detector 100, There is an advantage.

For example, the first communication module 170 may be an IoT (Internet of Thing) module capable of communicating using an LTE communication network. In particular, the first communication module 170 may include an NB-IoT (Narrow Band IoT) module . The NB-IoT module is a communication method for intermittently transmitting a small amount of information. When applied to a communication module for transmitting a measurement value of the abnormality detector 100 to the management server 200 as in the present invention, It is possible to transmit and receive information to / from the management server 200 with optimum efficiency.

In general, the information transmission of the IoT module using the LTE communication network is performed by the main data line. In this case, a large amount of information can be transmitted and the information transmission speed is high, but the cost of information transmission is high.

On the other hand, the NB-IoT module is suitable for transmitting a small amount of information by transmitting a low capacity information by utilizing the 180 kHz bandwidth corresponding to one resource block which is the minimum unit of resource allocation. Therefore, a simple low-capacity information such as information on measured temperature, humidity, gas, and the like is transmitted intermittently between the abnormality detector 100 and the management server 200, so that the NB-IoT module The first communication module 140 configured to allow a single management server 200 to accommodate a plurality of the anomaly detectors 100 enables efficient transmission and reception of information therebetween.

In addition, since the NB-IoT simplifies the wireless signal and further increases the transmission distance, information can be transmitted and received even in a place where a radio signal is not connected, such as an underground space. Accordingly, the first communication module 140 can be effectively applied to the detection of facilities installed in an underground space such as an underground parking lot of a building, and enables efficient management of the anomaly detector 100 in the underground area.

Also, the first communication module 140 using the NB-IoT module is configured to transmit information using a guard band resource block defined in the LTE frequency band. In the LTE frequency band, a guard band of a 180 kHz bandwidth is inserted between the LTE data band (normal LTE data band) for transmitting normal data and the data band to prevent interference therebetween. Therefore, the first communication module 140 transmits information by using the guard band of the LTE communication, so that the first communication module 140 can transmit information at low power without interference with the LTE data.

The control module 110 transmits the values of temperature, humidity, and gas measured by the sensor module 120 to the management server 200 through the first communication module 140, And controls the light emission of the lamp module 130 according to the information of the abnormality.

2 and 4, the management server 200 includes a second communication module 220 for transmitting and receiving information to and from the abnormal sensor 100 and the user terminal 300, An analysis module 240 for analyzing an abnormality pattern of the line according to the determination information of the determination module, information about a value measured in the line, A database 250 for cumulatively managing and storing information of preset values, and a main control unit 210 for controlling operations of a second communication module, a determination module, an analysis module, and a database. In addition, the management server 200 is connected to the integrated control room and the user PC, and provides all the information about the line 1 so that the administrator can check the information in real time.

The second communication module 220 receives the measured values from the plurality of the anomaly detectors 100 and transmits information indicating the presence or absence of the anomaly to the anomaly detector 100 and the user terminal 300. The second communication module 220 is configured as a communication unit that can use a communication network installed for communication of a portable terminal such as a smart phone. For example, the second communication module 220 may be an LTE communication module.

The determination module 230 determines whether or not the line at the corresponding location is abnormal according to the measured value of the anomaly detector 100 received through the second communication module 220. The determination module 230 compares the reference set value stored in the database 250 with the measured value of the anomaly detector 100, and determines the normal, preliminary, caution, and serious phase according to the difference.

Meanwhile, the determination module 230 determines whether or not an abnormality has occurred in the line position where the neighboring abnormality detector is installed and the line distance of the position where the neighboring abnormality detector is installed as an additional element The judgment standard for the abnormality of the line position in which the abnormality detector is installed is different.

Specifically, when the measured value of the abnormal sensor 100 installed at the neighboring n-1 or n + 1 position based on the abnormal sensor 100 installed at the n-th position of the line is normal, The abnormality detector 100 installed in the neighboring n-1 or (n + 1) -th position compares the measurement values measured at the n-th position with the measured values measured at the n-th position, When the measured value is determined to be abnormal such as spare, boundary, or serious information, the measured value of the anomaly detector 100 installed at the nth position is compared with the measured value and the set value, Distance, and abnormal phases as additional factors. For example, it is determined that an abnormality signal is detected even if the difference between the measurement value and the set value is relatively small as the distance from the neighboring position where the abnormality signal is measured, and the higher the abnormality step of the neighboring position is, ) Even if the difference between measured value and set value is relatively small, it is judged as abnormal signal. That is, when an anomaly signal is generated at a neighboring position, it is configured to determine an abnormality based on a relatively strict criterion using distance and anomaly information as additional elements at the corresponding position. This is because, when an abnormality occurs in a line at a neighboring location, there is a high possibility that an abnormality occurs in a nearby location.

The analysis module 240 patterns and analyzes an abnormal occurrence state according to the determination information of the determination module 230. The information determined by the analysis module 240 is accumulated and stored in the database, and is provided to the integrated control room and the manager PC.

The database 250 stores a set value input to determine whether there is an abnormality and stores a measurement value transmitted from the abnormality detector 100. In addition, the database stores information such as unique identification information of each abnormality detector, distance between each abnormality detector, and the like.

The main control unit 210 controls the operations of the second communication module 220, the determination module 230 and the analysis module 240 to determine whether there is an abnormality in the measurement values transmitted to the plurality of the anomaly detectors 100 , And transmits information of the determination result to the abnormality detector 100 and the user terminal 300, and at the same time, provides the integrated control room and the manager PC.

In addition, the main control unit 210 transmits to the anomaly detector 100 at a specific position the information measured by the anomaly detector, as well as the anomaly information measured by one or more anomaly detectors 100 before and after the anomaly detector 100. Therefore, the abnormal information about the line at the neighboring position of the abnormality detector 100 at the specific position is displayed together with the lamp module. At this time, since the abnormal information is emitted in different colors according to each step, the direction of the abnormal signal can be determined according to the color of the LED lamp.

The user terminal 300 may be a smart phone as a terminal carried by an administrator or an operator in the field. In the user terminal, an application capable of running the substation monitoring system of the present invention is executed, and the abnormal information of the line is confirmed through the application and various information is input.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: Over winding
110: control module 120: sensor module
130: lamp module 140: first communication module
200: management server
210: main control unit 220: second communication module
230: determination module 240: analysis module
250: Database

Claims (5)

A first communication module for transmitting the measured value to the outside, a lamp module for informing of the abnormality of the line, and a controller for controlling the operation of the sensor module, the first communication module and the lamp module An abnormality detector provided at a predetermined interval along a line, the abnormality detector having a control module for controlling the abnormality detector;
A second communication module for transmitting information to the abnormality detector and the external terminal, a determination module for determining whether the line is abnormal by comparing a signal measurement value transmitted from the abnormality detector with a preset value, And a main control unit for controlling operations of the second communication module, the determination module, and the database. And
And a user terminal for executing the substation monitoring system and providing the user with the line information transmitted from the management server,
Wherein the determination module of the management server comprises:
A signal measurement value and a set value transmitted from the anomaly detector are used as basic elements and distance information of a neighboring position of the line is used as an additional element, Wherein the substation monitoring system comprises: The communication system according to claim 1, wherein the first communication module comprises:
And an NB-IoT communication module for transmitting information in one resource block, which is a minimum unit of resource allocation in the LTE communication module, for transmission. 3. The method of claim 2, wherein the NB-IoT communication module comprises:
Wherein the controller is configured to transmit information using a guard band existing between the LTE data bands. The lamp module according to claim 1,
Further comprising a lamp for indicating an abnormality to the line at a neighboring location. delete

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