KR20220150665A - Switch on the ground for detecting occurrence of fire and performing fire extinguishing function - Google Patents

Abstract

According to the present invention, a ground switch having fire detection and fire extinguishing functions comprises: two or more sensors for detecting a fire in the ground switch; a fire detection unit for receiving sensor data from each of the sensors and determining whether a fire occurs in the ground switch by a combination of the sensor data; and a fire extinguishing device controller for generating a control signal to control a fire extinguishing device when the fire detection unit determines that the fire occurs. The ground switch of the present invention can effectively respond to the fire in the early stages and enable early firefighting, thereby preventing large-scale power outages caused by a fire in the ground switch. In addition, by notifying a system manager of the occurrence of the fire in real time, an operation state of each ground switch can be checked in real time from a remote place.

Description

Ground switch equipped with fire detection and extinguishing function {SWITCH ON THE GROUND FOR DETECTING OCCURRENCE OF FIRE AND PERFORMING FIRE EXTINGUISHING FUNCTION}

The present invention relates to a ground switch, and more particularly, to a ground switch equipped with fire detection and fire extinguishing functions.

A ground switch is a power facility that serves as a switch that connects or disconnects the flow of electricity in a line, and includes a plurality of switches capable of controlling power supply of power cables buried underground.

These ground switches are generally installed on roads or green areas, and control the flow of high-voltage current by operating a switch. However, such a ground switch is exposed to the risk of fire by generating an electric spark when a switch for controlling a high-voltage current of 22,000 to 26,000V is operated.

However, when a fire or breakdown occurs in a ground switch installed on a road in the city center, the fire not only spreads throughout the city center, but also causes a power outage accident in a large-scale area receiving current from the ground switch.

In order to solve this problem, Korean Patent Registration No. 10-1482669 discloses a distribution line failure display device installed on an overhead distribution line. According to the above patent, the distribution line failure display device includes a control unit; a sensing unit that detects at least one of current, voltage, and temperature on the distribution line and outputs sensing data; a failure determination unit determining whether or not there is a failure on the distribution line by using the detection data; a lamp unit turned on under the control of the control unit when it is determined that a failure has occurred on the distribution line; a first communication unit that transmits failure information including whether the distribution line has a failure, the degree of failure, and the location of the failure under the control of the control unit when it is determined that a failure has occurred on the distribution line; and a second communication unit for receiving distribution line wide area fault information from a distribution center, wherein the control unit detects a fault on the distribution line when the distribution line wide area fault information includes the area where the distribution line fault display device is installed. If it is determined that an error has occurred, the lamp unit and the first communication unit are controlled to operate, and the distribution line section in which a failure occurs can be easily recognized from the outside, and the degree of danger can be recognized from the outside by displaying differently according to whether or not there is a failure. has the effect of allowing

However, this conventional technology has a problem in that it cannot quickly cope with a fire inside the ground switch because it cannot perform internal fire monitoring and fire extinguishing functions by itself.

Korean Patent Registration No. 10-1482669

Therefore, the present invention is to provide a ground switch that can increase the probability of determining a fire by including two or more sensors for detecting fire inside the ground switch and detecting whether or not a fire has occurred by a combination of sensor data detected from the two or more sensors. do.

In addition, the present invention is to provide a ground switch that can effectively cope with the initial fire occurrence by directly controlling the fire extinguishing device by generating a control signal for controlling the fire extinguishing device itself when a fire is detected.

In addition, the present invention is intended to provide a ground switch capable of notifying a system manager of the operating state of the ground switch in real time by transmitting the fire detection and fire extinguishing function performance results to the main device of the distribution automation system in real time.

In order to achieve the above object, a ground switch equipped with a fire occurrence detection and fire extinguishing function provided by the present invention includes two or more sensors for detecting a fire inside the ground switch; a fire detection unit receiving sensor data from each of the sensors and determining whether or not a fire occurs inside the ground switch by a combination of the sensor data; and a fire extinguishing device controller generating a control signal for controlling the fire extinguishing device when the fire detection unit determines that a fire has occurred.

Preferably, the ground switch may further include a fire extinguishing device that operates based on a control signal output from the fire extinguishing device controller.

Preferably, the two or more sensors may include at least one of a contact temperature sensor and a non-contact temperature sensor, and a flame detection sensor.

Preferably, the fire detection unit determines the state of each of the sensors corresponding to the sensor data, and determines whether a fire occurs inside the ground switch by performing a logical operation on a state value for each sensor representing the state of each of the sensors. can

Preferably, the fire detection unit includes an input interface unit receiving sensor data from each of the two or more sensors; A reference value for each sensor for determining the state of each of the two or more sensors is stored in advance, and the state of the corresponding sensor is determined by comparing the reference value for each sensor with each of the sensor data input through the input interface unit, a sensor state determining unit that outputs a star state value; a calculation unit that determines whether a fire has occurred by performing an AND operation on the state values of each sensor; and an output interface unit for outputting an operation result value of the operation unit to the fire extinguishing device controller in order to inform whether or not a fire has occurred.

Preferably, the fire detection unit further includes a communication device providing a communication interface with a communication network of the distribution automation system, and when it is determined that a fire has occurred, a result of detecting whether or not the fire has occurred to a main device of the distribution automation system through the communication device. can be notified in real time.

The ground distribution switchgear of the present invention has two or more sensors for detecting fire therein, and detects whether or not a fire has occurred by a combination of sensor data detected from the two or more sensors, thereby increasing the probability of determining a fire. In addition, the present invention, when a fire is detected, generates a control signal for controlling the fire extinguishing device itself to directly control the fire extinguishing device, thereby effectively coping with the early stage of fire occurrence and enabling early extinguishing. In addition, the present invention has the advantage of being able to notify the system manager of the operating state of the ground switch in real time by transmitting the fire detection and fire extinguishing function performance results to the main device of the distribution automation system in real time.

1 is a schematic block diagram of a ground switch according to an embodiment of the present invention.
2 is a schematic block diagram of a fire detection unit according to an embodiment of the present invention.
FIG. 3 is a diagram showing an example of preset reference values for each sensor to determine the state of the sensors according to an embodiment of the present invention.
4 is a diagram illustrating an example of a logical product operation result for state values for each sensor according to an embodiment of the present invention.
5 is a diagram illustrating a procedure for performing a fire detection and extinguishing function of a ground switch according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but will be described in detail so that those skilled in the art can easily practice the present invention.

However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. On the other hand, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. In addition, even if detailed descriptions are omitted, descriptions of parts that can be easily understood by those skilled in the art are omitted.

Throughout the specification and claims, when a part includes a certain component, it means that it may further include other components, not excluding other components unless otherwise stated.

Figure 1 is a schematic block diagram of a ground switch according to an embodiment of the present invention, showing only the components representing the features of the present invention, and the structure of devices normally included in a general ground switch is omitted. This is to highlight the characteristics of the present invention.

Referring to FIG. 1 , a ground switch 100 according to an embodiment of the present invention includes a sensor unit 110, a fire detection unit 120, and a fire extinguishing device controller 130.

The sensor unit 110 may include two or more sensors for detecting a fire inside the ground switch 100 . Typically, various sensors (e.g., UHF sensor, HFCT sensor, TEV sensor, AA sensor, temperature sensor, current sensors and impact sensors, etc.). However, FIG. 1 shows a sensor unit 110 including a contact temperature sensor 111, a non-contact temperature sensor 112, and a flame detection sensor 113 in order to highlight the fire monitoring and fire extinguishing function of the present invention. . Hereinafter, a case in which the sensor unit 110 includes a contact temperature sensor 111, a non-contact temperature sensor 112, and a flame detection sensor 113 will be described as an example. At this time, the reason why two or more sensors are included for fire detection is to prevent malfunction of a single sensor, such as not recognizing the occurrence of a fire or mistaking it for a fire even though no fire has occurred.

The fire detection unit 120 determines whether a fire has occurred inside the ground switch 100 based on the sensor data detected by the sensor unit 110, but the sensors included in the sensor unit 110 (i.e., contact Receives sensor data from each of the expression temperature sensor 111, the non-contact temperature sensor 112, and the flame detection sensor 113, and determines whether a fire has occurred inside the ground switch 100 by a combination of the sensor data do. And the fire detection unit 120 transfers the result to the fire extinguishing device controller 130. That is, the fire detection unit 120 determines the state of each of the corresponding sensors based on the sensor data received from the sensor unit 110, and generates a state value for each sensor representing the state of each of the sensors as a result. And, it is possible to generate a result value to indicate whether a fire occurs inside the ground switch by performing a logical operation on the state value for each sensor. Then, the resulting value is transferred to the fire extinguishing device controller 130. A configuration and detailed operation example of the fire detection unit 120 will be described later with reference to FIG. 2 .

The fire extinguishing device controller 130 checks whether a fire has occurred inside the ground switch 100 based on the result value transmitted from the fire detection unit 120, and if a fire has occurred, the fire extinguishing device 200 Generates a control signal for control.

At this time, the fire extinguishing device 200 operates based on the control signal output from the fire extinguishing device controller 130, and for this purpose, it is included inside the ground switch 100 or disposed within a certain distance from the ground switch 100 can

2 is a schematic block diagram of a fire detection unit according to an embodiment of the present invention. 1 and 2, the fire detection unit 120 according to an embodiment of the present invention includes an input interface unit (I/F) 121, a control unit 122, a sensor state determination unit 123, and a calculation unit. 124, an output interface unit (I/F) 125, and a communication interface unit (I/F) 126.

The input interface unit (I/F) 121 receives sensor data from each of at least two or more sensors among the contact temperature sensor 111, the non-contact temperature sensor 112, and the flame detection sensor 113. At this time, the input interface unit (I/F) 121 receives sensor data from sensors connected to digital input (DI) or analog input (AI) of the terminal unit (FRTU) of the distribution automation system. can be input.

The control unit 122 controls the overall operation of the fire detection unit 120 based on a preset control algorithm, but transmits sensor data input through the input interface unit (I/F) 121 to the sensor state determination unit 123 ), and serves to transmit data and commands between the sensor state determination unit 123, the calculation unit 124, the output I/F 125, and the communication I/F 126.

The sensor state determination unit 123 determines the state of the corresponding sensor based on the sensor data input through the input interface unit (I/F) 121. To this end, the sensor state determination unit 123 stores in advance a reference value for each sensor for determining the state of each of the two or more sensors, and each of the reference value for each sensor and the sensor data input through the input interface unit 121 The state of the corresponding sensor is determined by comparing Then, the state value of each sensor is output. That is, the sensor state determination unit 123 outputs the state value for each sensor to the calculation unit 124 through the control unit 122 .

At this time, an example of storing reference values for each sensor for determining the state of the sensors is illustrated in FIG. 3 . 3 (a) shows an example of storing the reference value of the contact temperature sensor 111, (b) of FIG. 3 shows an example of storing the reference value of the non-contact temperature sensor 112, and (c) of FIG. 3 shows a flame detection An example of storing the reference value of the sensor 113 is shown.

Referring to (a) of FIG. 3, when the reference value of the contact temperature sensor 111 is 70°C and the sensor data (ie, temperature) detected by the contact temperature sensor 111 is less than 70°C, indicating whether or not there is a fire. If the state value of the contact temperature sensor 111 is '0' and the sensor data (ie, temperature) detected by the contact temperature sensor 111 is 70°C or higher, the state of the contact temperature sensor 111 indicating whether there is a fire or not It can be seen that the value is set to '1'.

In addition, referring to (b) of FIG. 3, the reference value of the non-contact temperature sensor 112 is 50 ° C, and when the sensor data (ie, temperature) detected by the non-contact temperature sensor 112 is less than 50 ° C, indicating whether there is a fire or not. If the state value of the non-contact temperature sensor 112 is '0' and the sensor data (ie, temperature) detected by the non-contact temperature sensor 112 is 50 ° C or higher, the state value of the non-contact temperature sensor 112 indicating whether there is a fire is ' It can be seen that it is set to 1'.

On the other hand, referring to (c) of FIG. 3, the reference value of the flame detection sensor 113 is set to whether or not a flame is detected, and indicates whether or not a fire is detected when the flame is not detected (ie, 'not detected'). The state value of the flame detection sensor 113 is set to '0', and the state value of the flame detection sensor 113 indicating whether or not a fire is set to '1' when a flame is detected (ie, 'detection'). Able to know.

Referring to FIGS. 2 and 3 , the sensor state determination unit 123 may determine the state of the corresponding sensor by comparing the reference value for each sensor as illustrated in FIG. 3 and sensor data, which is actually measured data of the corresponding sensors. That is, the sensor data input from the contact temperature sensor 111 is 75 ° C, the sensor data input from the non-contact temperature sensor 112 is 55 ° C, and the sensor data input from the flame detection sensor 113 is 'undetected'. ', the sensor state determination unit 123 may output state values of '1,1,0'.

The calculation unit 124 determines whether a fire has occurred by performing a logical operation on the state values output from the sensor state determination unit 123 (ie, state values for each sensor). That is, the operation unit 124 receives the state value of each sensor determined as '0' or '1' from the sensor state determination unit 123 through the control unit 122, and performs a logical operation (ie, logical product operation). ) is executed, and the result is output.

4 is a diagram showing an example of a logical product operation result for state values for each sensor. Referring to FIGS. 1, 2, and 4, the operation unit 124 calculates the state values of each sensor. A logical multiplication operation result as exemplified in 4 is generated, and the resulting value is output.

At this time, the result value output from the calculation unit 124 is, as illustrated in FIG. 4 , the state value 10 of the contact temperature sensor, the state value 20 of the non-contact temperature sensor, and the state value of the flame detection sensor ( 30) becomes '1' only when all are '1' (A), and the fire detection unit 120 recognizes that a fire has occurred only in this case. In this way, the reason why the operation unit 124 performs the AND operation is to prevent malfunction of the fire extinguishing device due to malfunction of the sensor.

The control unit 122 transfers the result value output from the calculation unit 124 to the output interface unit (I/F) 125, and the output interface unit (I/F) 125 transmits the result value to the fire extinguishing device controller output to (130).

The communication interface unit (I/F) 126 provides a communication interface with the communication network of the distribution automation system, and when the output value output through the control unit 122 is '1', it is transmitted to the main device of the distribution automation system. . That is, when a fire occurs in the ground switch 100, it is transmitted to the main device so that the system manager can respond to it.

To this end, the fire detection unit 120 may be implemented inside a terminal device of the distribution automation system or implemented to interwork with the terminal device of the distribution automation system.

Meanwhile, as described above, when all state values for each sensor are '1', the control unit 122 recognizes that a fire has occurred and outputs a control signal for extinguishing the fire, and when one of the state values for each sensor is '1' In this case, it may be possible to output an alarm such as sensor inspection.

5 is a diagram illustrating a procedure for performing a fire detection and extinguishing function of a ground switch according to an embodiment of the present invention. 1, 2 and 5, the procedure for the ground switch 100 of the present invention to perform fire detection and extinguishing functions is as follows.

First, in step S110, the sensor unit 110 monitors whether a fire occurs. That is, two or more sensors included in the sensor unit 110 (at least one of the contact temperature sensor 111 and the non-contact temperature sensor 112 and the flame detection sensor 113) control the temperature inside the ground switch 100. and monitoring for sparks.

In step S120, the fire detection unit 120 determines whether a fire occurs based on the monitoring result of step S110. To this end, the fire detection unit 120 receives sensor data from each of the sensors included in the sensor unit 110 (ie, the contact temperature sensor 111, the non-contact temperature sensor 112, and the flame detection sensor 113). received, and it is determined whether or not a fire has occurred inside the ground switch 100 by a combination of the sensor data. At this time, in step S120, a specific method for determining whether or not a fire has occurred is as described in the description with reference to FIGS. 1 to 4.

If it is determined in step S120 that a fire has occurred, in step S130, the communication interface unit 126 notifies the main device 300 (ie, the main device of the distribution automation system) of the fire. At this time, the communication interface unit 126 may notify the occurrence of the fire in a manner agreed upon in advance with the main device 300. Based on the result value of , a separately generated notification signal may be transmitted to notify occurrence of a fire. At this time, the ground switch 100 is usually managed by switch name, and the switch name includes location information of the switch, facility specifications, switch state (eg, switch state, current value, voltage value, communication state, etc.), etc. contains data Therefore, when the ground switch 100 transmits the occurrence of the fire to the main device 300, Identification information for notifying one's own installation location or region may be further included and transmitted.

The main unit 300 detects a fire in the corresponding ground switch 100 based on the result of the operation unit 124 transmitted from the ground switch 100 or the separately generated notification signal and the ground switch 100 identification information. You can notify your system administrator.

In step S140, the control unit 122 transfers the resultant value of the calculation unit 124 to the fire extinguishing device controller 130 through the output interface unit 125, and the fire extinguishing device controller 130, based on the value, fire extinguishing device ( 200) is generated and transmitted to the fire extinguishing device 200.

In step S150, the fire extinguishing device 200 operates in response to the control signal to extinguish the fire.

As such, the present invention uses two or more sensors provided inside the ground switch to detect whether a fire has occurred, and in response to this, by generating a control signal for controlling the fire extinguishing device by itself to directly control the fire extinguishing device, It has the advantage of being able to cope effectively in the early stage of occurrence and enabling early evolution. Due to this, it is possible to prevent a large-scale power outage due to a ground switch fire in advance. In addition, by notifying the system manager of the occurrence of such a fire in real time, the operation status of each ground switch can be checked in real time from a remote location.

In the above, the embodiment of the present invention has been described, but the above example is only one example for explaining the present invention, and the content of the present invention is not limited by the exemplified content. The scope of the rights of the present invention is not limited thereto, and the present invention can be easily changed from the embodiments by those skilled in the art to include all changes and modifications within the range recognized as equivalent. have.

100: ground switch 110: sensor unit
120: fire detection unit 121: input I/F
122: control unit 123: sensor state determining unit
124: calculation unit 125: output I / F
126: communication I/F 130: fire extinguishing device controller
200: fire extinguishing device 300: main device

Claims (6)

In the ground switch,
two or more sensors for detecting fire inside the ground switch;
a fire detection unit receiving sensor data from each of the sensors and determining whether or not a fire occurs inside the ground switch by a combination of the sensor data; and
The ground switch, characterized in that it comprises a fire extinguishing device controller for generating a control signal for controlling the fire extinguishing device when it is determined that a fire occurs in the fire detection unit. According to claim 1,
The ground switch, characterized in that it further comprises a fire extinguishing device that operates based on the control signal output from the fire extinguishing device controller. The method of claim 1 or 2, wherein the two or more sensors
At least one of a contact temperature sensor and a non-contact temperature sensor;
A ground switch comprising a flame detection sensor. The method of claim 3, wherein the fire detection unit
The ground switch, characterized in that determining whether a fire occurs inside the ground switch by determining the state of each of the sensors corresponding to the sensor data and performing a logical operation on a state value for each sensor representing the state of each of the sensors. . The method of claim 4, wherein the fire detection unit
an input interface unit that receives sensor data from each of the two or more sensors;
A reference value for each sensor for determining the state of each of the two or more sensors is stored in advance, and the state of the corresponding sensor is determined by comparing the reference value for each sensor with each of the sensor data input through the input interface unit, a sensor state determining unit that outputs a star state value;
a calculation unit that determines whether a fire has occurred by performing an AND operation on the state values of each sensor; and
The ground switch, characterized in that it comprises an output interface unit for outputting the calculation result of the calculation unit to the fire extinguishing device controller in order to notify whether a fire has occurred. The method of claim 1, wherein the fire detection unit
Further comprising a communication device providing a communication interface with the communication network of the distribution automation system,
The ground switch, characterized in that, when it is determined that a fire has occurred, a result of detecting whether or not a fire has occurred is notified in real time to the main device of the distribution automation system through the communication device.

Images