KR101745972B1 - Integral Type Distributing Board Alarming System And Operating Method Thereto - Google Patents

Abstract

The present invention relates to an operation and maintenance of a switchgear for detecting a voltage state of a three-phase power source, a fire occurrence, a cable state, and the like, and outputting detected data, by operating a state of a switchboard for supplying a high voltage power supplied from a substation to a commercial voltage, And an alarm display unit for displaying a warning and an operating state according to a detected signal, a warning and display unit for operating the fire alarm system through the internal fire extinguisher in accordance with an input control signal, A fire detection control unit for recognizing a fire situation inside or outside the switchboard and outputting a fire situation control signal when it is determined that a fire situation has occurred, a switchboard central control unit for controlling the overall operation of the switchboard, Various control signals are received and the < RTI ID = 0.0 > A control signal amplifying driver for driving various display devices of the warning and warning display unit and an internal fire extinguisher, an administrator or an official to input a set value according to the operation mode and operation of the central control unit for the switchgear, The present invention relates to an integrated switchboard warning system and a method of operating the same.

Description

[0001] INTEGRATED TYPE DISTRIBUTING BOARD ALARM SYSTEM AND OPERATING METHOD [

The present invention relates to a switchgear (high-voltage switchboard, low-voltage switchboard, motor control panel, and distribution board), and more particularly to various warning functions required for normal operation of a conventional switchboard, for example, three-phase voltage detection, self- And the like to maximize the convenience of the manager and increase the stability and reliability in the industrial field by integrating the same in a single switchboard and the operation method thereof.

Generally, a switchboard is a device for supplying high-voltage power supplied from a substation to a consumer by down-converting it to a commercial voltage, and the types thereof include a high-voltage switchboard, a low-voltage switchboard, an electric motor control board and a distribution board.

That is, the transmission and distribution panel includes a receiving facility for receiving high-voltage power supplied from a substation, a substation for lowering the high-voltage power received from the substation to a commercial voltage, a distribution device for supplying the substracted electricity to the electric devices in each building Equipment, switch devices and other safety devices, and the like.

In order to safely supply power to various power tools used in various construction sites or workplaces, the distribution board in the power distribution panel is provided with a plurality of circuit breakers arranged on the base plate inside the case of the panel board, and distributes the power through the circuit breaker. The power supply is cut off and the accident caused by the overload is prevented. Therefore, the distribution board itself is a stabilizing device of one power supply.

An example of the prior art regarding the distribution board is as follows.

The distribution board of the Registration Practical New Study Registration No. 20-032957 (2003. 02. 05. Announcement) connects the main busbar to the main circuit brake mounted on the upper end of the base plate through the main input terminal at the lower end of the base plate, A plurality of circuit blades are disposed in the middle of the plate, and busbars are respectively connected from the main circuit brakes to supply electric power to the electric equipment used in the construction site or the workplace through the circuit break.

The distribution panel of Registration No. 10-0594903 (Jun. 2006. 30) is composed of a main wiring breaker disposed at the upper center of the base panel and an auxiliary wiring breaker arranged side by side of the base panel, It is possible to simply connect the charger bus bars by crossing the charger bus bars vertically and horizontally.

In a distribution panel having an illumination lamp of Registration Practical Utility Model Registration No. 20-0439178 (Mar. 26, 2008), an illumination lamp is installed on an upper side of a distribution box case so that a distribution panel disposed at a corner of an apartment or a public house can be easily viewed The illumination lamp is turned on by the sensor or the lighting switch, thereby making the maintenance work more convenient.

It is known that the other distribution panel is equipped with a temperature sensor and an alarm to automatically alarm when the temperature of the distribution panel rises.

In the case of Korean Registered Patent No. 10-1411958, the internal temperature of the panel board is increased by 50 ° C or more, and an alarm and an alarm light are activated to alert the internal temperature of the panel to 72 ° C or more The fire extinguisher is automatically opened regardless of the occurrence of the fire, so that the extinguishing agent charged in the fire extinguisher can be dispersed inside the panel to prevent the fire, thereby enhancing the safety of the panel.

However, if the installation and operation of the switchboard is practically carried out, as the requirements for safe use of the switchboard vary according to the environment of the installation site or the working environment, the alarm system, which operates only under certain conditions, So that the reliability of the switchboard is deteriorated.

KR 20-032957 KR 10-0594903 KR 20-0439178 KR 10-1411958

The present invention relates to a switchboard (high-voltage switchboard, low-voltage switchboard, motor control panel and distribution board) for solving the above-mentioned problems, and in particular, various warning functions required for a normal operation of a conventional switchboard, Function, self-extinguishing function, and cable burglar alarm function, etc., in a single switchboard to maximize the convenience of the administrator and to increase the reliability and reliability in the industrial field. There is.

According to another aspect of the present invention, there is provided an alarm system for a switchgear which supplies a high-voltage power supplied from a substation to a commercial power supply, A switchbind operation state sensing unit for sensing a voltage / current state of a power source, a fire occurrence state, a cable state, and the like and outputting detected data; A switchboard operating state and warning display unit for performing a fire alarm through an internal fire extinguisher in accordance with an input control signal, and a warning and an operating state according to a detected sensing signal; A fire detection control unit for recognizing a fire situation inside and outside the power plant through the switchboard operation state detection unit and outputting a fire situation control signal when it is determined that a fire situation has occurred; And a controller for receiving a voltage and current magnitude data of each phase of the three-phase power source output from the power and control unit operation state sensing unit to generate a balance state warning control signal for sensing a three-phase voltage and current balance state, And a fire suppression control signal generating unit for generating a fire suppression control signal according to a fire occurrence state based on the detection data of presence or absence of a fire generated by the switchgear operation state detection unit, A power control central control unit for generating a status check control signal; A control signal amplifying driver for receiving various control signals output from the central control unit and driving various display devices of the power supply and relay panel and the alarm display unit; A power supply unit for supplying power for operation of the configurations; And an operating unit for inputting a set value according to an operating mode and an operation of the switching center central control unit by an administrator or an official, and allowing the user to manually cope with a situation according to the occurrence of a fire.

In order to achieve the above object, an additional feature of the integrated ward / alarm warning system according to the present invention is to detect the voltage and current balance state of three phases in the switchboard central control unit and to suspend or maintain the distribution operation when an unbalanced situation occurs .

According to another aspect of the present invention, there is provided a switchboard alarm system including a switchgear operation state sensing unit for sensing a three-phase AC power source, A current sensing unit for sensing a current; A current AD converter for converting a current magnitude of each phase detected by the current detector into a digital signal and outputting the digital signal; The switchgear operation state sensing unit includes: a voltage sensing unit that senses voltages applied to the phases (R, S, T) with respect to a three-phase AC power source supplied from the outside; A voltage AD converter for converting a voltage of each phase detected by the voltage detector into a digital signal and outputting the digital signal; A temperature sensing unit for sensing a temperature inside the switchgear; A smoke detection unit for detecting smoke when a short circuit, an overload, an incomplete tightening of screws, or the like occurs in the interior of the switchgear and the smoke is generated due to overheating or fire; An external fire sensor connection unit for connecting an external fire sensor for detecting a fire generated outside the switchboard; And a cable disconnection detecting unit for detecting whether a single-phase AC power source is input to the power line cable connected to the switchboard and for detecting a cable being disconnected or stolen.

According to another aspect of the present invention, there is provided an integrated switchboard warning system including: an operation status LED display unit for displaying an operation status of a switchboard; A seven-segment panel for displaying the voltage and current status of the three-phase power source and the single-phase power source and the temperature inside the distributor in numerical values; A fire suppression driving unit for shutting off an external power input when a fire situation occurs and applying a predetermined heat to a temperature sensor portion of a fire extinguisher (powder type) or a diffusion fire extinguisher provided therein; An alarm device for notifying external workers or persons of audible warning sound or visual warning light when a fire situation or cable theft occurs; And identification of the distribution board for distinguishing the distribution boards.

In accordance with another aspect of the present invention, there is provided an integrated switchboard warning system, comprising: a control unit for controlling a fire detection control unit to be manually operated by an operator or a manager to forcibly output a fire situation control signal; A situation manual operating section; And a switchboard operation switch unit for operating an operation mode and an operation state of the switchboard central control unit.

According to another aspect of the integrated switchboard warning system of the present invention for achieving the above object, the switchboard central control unit controls the current and voltage magnitudes of the current and voltage outputted from the current A / And a control unit for generating a balance state warning control signal for sensing a voltage / current balance state of the three phases by receiving the data and warning the occurrence of an unbalance situation, A fire suppression control signal is generated in accordance with a fire occurrence state, and a cable state check control signal is generated in response to a cable disconnection or theft occurring in the cable disconnection detection unit have.

According to another aspect of the present invention, there is provided a method for operating an integrated watt-hour alarm system, including: operating state of a switchboard for supplying high-voltage power from a substation to a commercial power supply, A switch and an operating state detecting unit for detecting a fire occurrence and a state of a cable and outputting detected data; and a control unit for detecting a fire and a warning based on the detected signal, A fire detection control unit for recognizing a fire situation inside and outside the switchboard through the switchboard operation state detection unit and outputting a corresponding fire situation control signal when it is determined that a fire situation has occurred, A central control section for controlling the overall operation of the vehicle, A control signal amplification driving unit for receiving various control signals outputted from the central control unit of the base transceiver subsystem and driving various display devices and internal fire extinguishers of the alarm display unit and the operation mode of the switchgear central control unit, And an operation unit for inputting a set value according to the detected temperature and manually responding to a situation according to the occurrence of a fire. The operating method of an integrated type powerhouse alarm system includes: detecting a voltage and a current state of an incoming three- The method comprising: A second step of determining whether or not a fire situation has occurred in the power distribution panel by detecting the presence and temperature of smoke generated in the power transmission and distribution panel when it is determined that the power supply imbalance is not caused through the first process; A third step of determining whether a fire situation has occurred from outside if it is determined that a fire situation has not occurred within the busbar through the second process; A fourth step of determining whether a fire situation has not occurred outside the switchboard through the third process, if the connection cable is broken or stolen; If it is determined through the first process that the power is unbalanced or a fire situation occurs outside the control panel through the third process or if it is determined that the connection cable is disconnected or stolen through the fourth process, A fifth step of issuing a differentiated alarm according to each situation and proceeding to a standby mode in which the manager waits for an action by the manager in accordance with the situation; And if it is determined through the second process that a fire situation has occurred in the power supply and distribution panel, a fire process is suppressed through the internal fire extinguisher, power cutoff and warning are generated, and the process goes to a standby mode Including.

In accordance with another aspect of the present invention, there is provided a method of operating an integrated ward / alarm warning system, including: a first step of detecting an internal temperature of a switchboard through a temperature sensor; A second step of confirming whether smoke is generated inside the switchboard through the smoke detector; If it is determined that the internal temperature of the switchgear detected through the first step has risen to a level higher than the fire alarm level (72 ° C to 90 ° C), an alarm for the occurrence of a fire is generated and an internal circuit breaker A third step of operating; A fourth step of forcibly operating the internal fire extinguisher after the breaker is forcedly operated in the third step; If it is determined that the internal temperature of the switchgear detected through the first step has not risen to the fire alarm level but has risen above the fire preliminary warning level (50 ° C to 60 ° C), a fire preliminary alarm ; And if it is determined that the internal temperature of the switchgear detected through the first step has not risen to the fire preliminary warning level, it is determined whether smoke is generated inside the switchboard through the second step and it is determined that smoke is generated inside the switchboard And a sixth step of generating a fire preliminary alarm indicating that there is a possibility of occurrence of a fire.

In accordance with another aspect of the present invention, there is provided a method for operating an integrated watt-hour warnings system, including: a first step of waiting for a predetermined period of time after a forced operation of a breaker; A second step of detecting an internal temperature of the switchgear during the time of the first step; A third step of determining whether the internal temperature rises even after the power line is shut off in the process of detecting the internal temperature through the second step; And a fourth step of forcibly operating the internal fire extinguisher when it is determined through the third step that the internal temperature of the switchboard is raised.

According to the proposed embodiment, by providing the integrated alarm system, it is possible to detect the unbalance problem of the three-phase voltage / current flowing into the switchgear and to detect the problem of the power line for quick response and power supply, If the installation and operation of the switchboard is made possible by warning the cable theft or disconnection, it is possible to cope with various matters to be considered for the safe use of the switchboard according to the installation environment or work environment.

1 is an exemplary block diagram of an integrated ward / alarm warning system according to the present invention;
2A and 2B are flow charts showing an operation procedure of the integrated ward / alarm warning system according to the present invention
3 to 7 are diagrams illustrating an example of a circuit configuration of the integrated ward / alarm warning system according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an integrated switchboard warning system and a method of operation according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an integrated switchboard alarm system according to an embodiment of the present invention. The switchboard operation state detection unit S, the switchboard operation state and the alarm display unit D, the fire detection control unit 7, A central control unit 1 of the power distribution board, a control signal amplification driving unit 12, a power supply unit 9 and an operation unit K. [

The switchboard operation state sensing unit S includes a current sensing unit 18 sensing currents applied to the phases R, S and T with respect to a three-phase AC power source supplied from the outside, A current AD conversion unit 19 for converting the current magnitude of each phase sensed by the current sensing unit 18 into a digital signal and outputting the digital signal, A voltage A / D converting unit 3 for converting the voltage of each phase detected by the voltage detecting unit 2 into a digital signal and outputting the digital signal, A smoke sensing unit 5 for sensing smoke when a short circuit or a short circuit is generated in the inside of the switchboard, an external fire sensor 5 for detecting a fire generated outside the switchboard, An external fire sensor connection unit 8 for connecting the external fire sensor, And a cable disconnection detecting unit 10 for monitoring a case where the cable is disconnected or stolen through the presence or absence of the single-phase AC power supply of the power line cable connected to the power line cable.

The operating state of the switchboard and the warning display unit D include an operating state LED display unit 13 for displaying an operating state of the power distribution board and a display unit 13 for displaying the state of the three- A fire suppression driving unit 16 for shutting off external power input when a fire situation occurs and applying a predetermined heat to a temperature sensor portion of a fire extinguisher (powder type) or a diffusion fire extinguisher provided inside the fire extinguisher, An alarm device 15 for notifying an outside worker or a person of an audible warning sound or a visual warning light when a cable stolen (disconnected) situation occurs, and a distribution board identification (17).

The operation unit K includes a fire situation manual operation unit 6 for manually or manually operating the fire detection control unit 7 to forcibly output a fire situation control signal and a control unit 6 for operating the operation mode of the switchboard central control unit 1 And a switchboard operation switch unit 11 for operating an operation state.

The fire sensing control unit 7 recognizes the fire situation inside and outside the switchboard through the fire sensor connected to the smoke sensing unit 5 and the external fire sensor connection unit 8, And outputs a fire situation control signal corresponding to the fire situation.

In addition, the switchboard central control unit 1 receives data on voltage and current magnitude of each phase output from the voltage A / D converter 3 and the current A / D converter 19 and detects the three-phase voltage and current balance state And generates a voltage / current state warning control signal for warning of the unbalance when an unbalanced situation occurs. The control unit 7 generates a voltage / current state warning control signal, And generates a fire suppression control signal in accordance with a fire occurrence state and generates a cable state check control signal according to the occurrence of a cable disconnection or theft occurring in the cable disconnection detecting unit 10 .

The control signal amplification driver 12 receives various control signals generated from the switchboard central control unit 1 and drives various display devices of the switchboard operation state and the warning display unit D. [

Referring to FIG. 2, the operation method of the integrated switchboard alarm system according to the present invention will be described with reference to FIG. 1. Referring to FIG. 2, the operating logic of the switchboard central control unit 1 is to The initialization process is preceded by the initialization.

After the initialization process, the switchboard according to the present invention is installed and operated on the site. Accordingly, the current sensing unit 18 detects the current state of the three-phase power source flowing into the switchboard through the process of step S101, The status is displayed on the seventh segment panel 14.

Then, it is determined in step S102 whether the current state of the three phases detected in step S101 is balanced or unbalanced. If it is determined in step S102 that the current is unbalanced, step S103 The process advances to step S116 to wait for a response to the manager confirmation.

On the other hand, if it is determined in step S102 that the current is not unbalanced, the process proceeds to step S104. In step S104, the voltage sensing unit 2 senses the voltage state of the three- It is displayed through the seventh segment panel 14.

Then, in step S105, it is determined whether the three-phase voltage detected in step S104 is in a balanced state or in an unbalanced state. If it is determined in step S105 that the voltage is unbalanced, The process advances to step S116 to wait for the action of the manager confirmation.

On the other hand, if it is determined in step S105 that the voltage is not unbalanced, the process proceeds to step S107 to detect the internal temperature of the switchboard through the temperature sensor and display the detected internal temperature through the seven-segment panel 14 .

After the internal temperature of the switchgear is displayed through the process of step S107, the process proceeds to step S108, and the smoke detector 5 confirms whether smoke is generated inside the switchgear.

In step S109, it is determined in step S109 whether the internal temperature of the switchgear detected in step S107 is a fire alarm level. In the present invention, it is preferable that the temperature of the fire alarm level is set to 72 to 90 degrees Celsius .

Therefore, if it is assumed that the temperature of the fire alarm level is set to 72 ° C, it is determined in step S109 that the possibility of fire is high if the internal temperature of the switchboard rises to 72 ° C or more, and the process proceeds to step S113, And proceeds to step S114 to forcibly operate the internal circuit breaker for interrupting the power supply.

After the breaker is forcedly operated in the step S114, the process proceeds to the step S115. The process of the step S115 shown in FIG. 2B is shown as one step, but it is actually divided as follows.

a) a first step of waiting for a predetermined time after the forcible operation of the circuit breaker in step S114;

b) a second step of detecting the internal temperature of the switchgear during the first step.

c) a third step of determining whether the internal temperature rises even after the power line is disconnected in the process of detecting the internal temperature through the second step.

d) Forcibly operating the internal fire extinguisher if it is determined that the internal temperature of the inside of the inside of the water rises by the third step.

The process of step S115 described above is one example of performing the operation process according to the present invention. In general, when it is determined that a fire is generated, the fire extinguisher is operated after the breaker is tripped, .

Such a conventional method may be applied to the present invention.

However, in the above-described conventional method, the fire extinguisher is forcibly operated only because the internal temperature of the switchboard has risen above the set reference even when the possibility of internal fire is low. This is a cause of increase in the maintenance cost of the switchboard Lt; / RTI >

Therefore, in the embodiment of the present invention, the process of step S115 in which the operation process becomes complicated is presented as a preferred embodiment, and it is noted that the present invention is not limited to the actual application example.

When the fire extinguisher inside the inside of the water is forcibly operated and the fire generated in the inside of the inside of the water is forcibly suppressed through the process of step S115 described above, the process proceeds to step S116 and a waiting state .

On the other hand, if it is determined in step S109 that the internal temperature of the switchboard has not risen to 72 degrees Celsius or more, the process proceeds to step S110 to determine whether the internal temperature of the switchgear detected through the process of step S107 is the preliminary fire alarm level.

In the present invention, it is preferable to set the temperature of the preliminary fire alarm level at 50 ° C to 60 ° C.

Therefore, if it is assumed that the temperature of the preliminary fire alarm level is set at 50 deg. C, it is determined at step S110 that there is a possibility of fire when the internal temperature of the switchboard rises to 50 deg. C or more, A fire preliminary alarm is generated in the sense that there is a possibility, and the process proceeds to the step S116 to maintain the waiting for the action according to the manager confirmation.

On the other hand, if it is determined in step S110 that the internal temperature of the switchboard has not risen to 50 DEG C or more, the process proceeds to step S111 to determine whether smoke has occurred in the interior of the switchboard in step S108.

At this time, if it is determined in step S111 that smoke has been generated inside the switchboard, the process proceeds to step S112 to generate a fire preliminary alarm indicating that there is a possibility of occurrence of a fire, and also proceeds to step S116 to wait for an action And maintain the atmosphere.

On the other hand, if it is determined in step S111 that no smoke is generated inside the switchboard, the process proceeds to step S117. In step S117, the fire sensor connected to the external fire sensor connection unit 8 detects the occurrence of fire, Ensure that a fire warning signal is generated manually.

If it is determined in step S117 that an external fire has occurred, it is determined in step S119 that a fire has occurred in the exterior. If it is determined in step S117 that a fire has occurred in the exterior of the switchgear, And keeps waiting for the action according to the manager's confirmation.

On the other hand, if it is determined in step S117 that there is no external fire, the process proceeds to step S120 to detect whether the power line cable connected to the power line is disconnected or stolen through the cable line disconnection detecting unit 10.

In this case, the operation principle of the cable disconnection detecting unit 10 is to detect whether a single-phase AC 220 V voltage is applied to the power line supply cable or whether the voltage is AC220V or not. In step S121, It is judged whether it takes.

If it is determined in step S121 that there is a connection cable in which a single-phase AC voltage of 220 V is not applied, the process proceeds to step S122 to generate an alarm for requesting confirmation of the state of the connection cable, and the process proceeds to step S116, And maintain the atmosphere.

If it is determined in step S121 that there is no cable in a short-circuited or stolen state, actually, the switch- ing board currently in operation is in a normal operation state in which no alarm is generated from the step S101. Therefore, the manager operates in step S123 or S124 Unless a stop request or an initialization request is generated, continuous monitoring of the current status of the switchboard is performed.

1, the present invention has a function of measuring and displaying a voltage between phases of an incoming three-phase voltage. The operation of the present invention will now be described in detail with reference to the accompanying drawings.

a1) In detail, the status balance display function (reference 2, 3, 4, 14, 18, 19) of the phase power of each phase is measured by phase voltage and phase current measurement of three phase R, S and T phases.

a2) Measurement and display of phase-to-phase voltage and current between single-phase N phase and R, S and T (through the connection between the configurations of reference numerals 2, 3, 4, 11, 14, 18 and 19).

a3) Intermittent alarm issuing function (see reference numeral 15) when the phase balance is significantly different.

The present invention also has an internal fire alarm and fire extinguisher operating function.

b1) Indicate the temperature inside the compartment and display it on the thermometer. When the temperature reaches the set temperature (for example, 50 degrees), the first alarm is made and the fire alarm temperature (for example, 72 degrees) , 17).

b2) Install smoke detector in the cabinet and issue a fire alarm when smoke occurs (through the connection between the configurations of reference numerals 5, 7 and 15).

b3) Automatic tripping of breaker in case of fire (see reference number 16).

b4) In case of fire, operate a diffusing fire extinguisher to extinguish the fire (diffuse fire extinguisher operating method is to operate the fire extinguisher by applying constant heat to the diffuser fire extinguisher temperature sensor, recognizing the fire occurrence).

In addition, the present invention has an in-vehicle manual and automatic fire alarm function.

c1) Attach a transmitter that can be operated manually in case of a fire in the outside door, and when a person who recognizes the fire presses the switch, a fire alarm announcement (through the connection between the configurations of reference numerals 6 and 7).

c2) When a fire detector (smoke detector, differential type detector, warm temperature type detector) is connected to this unit, fire alarm is automatically issued in case of fire (about 20 detectors can be installed) ).

c3) whether it is inside fire or external fire is indicated on this unit (see configuration of reference numeral 13)

In addition, the present invention has a cable breaking and burglar alarm function, in which the cable is stolen or disconnected during normal operation and is indicated by a lamp (LED) and an alarm announcement (via a link between the configurations of reference numerals 10 and 15).

In addition, the present invention applies a variety of alarm announcement methods. When all alarms are issued, the sirens 110db, the central LEDs (3 to 5W), and the red LEDs are turned on and off (through the connection between reference numerals 17 and 15) .

In case of normal or power outage, 3 ~ 5W LEDs will light up, so it is used for identification of panel boards and evacuation in case of emergency (refer to Reference No. 17 configuration)

An example of the circuit configuration of the integrated switchboard warning system according to the present invention operating as described above is as shown in FIGS. 3 to 7 attached hereto.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1: Switchboard central control unit 2: Voltage sensing unit
3: voltage AD conversion unit 4: temperature sensing unit
5: Smoke detection part 6: Fire situation manual control part
7: Fire detection control unit 8: External fire sensor connection
9: Power supply unit 10: Cable disconnection detecting unit
11: Switchboard control switch unit 12: Control signal amplifying driver
13: LED display part 14: Seven segment panel
15: alarm device 16: fire suppression drive part
17: Identification of panel board, etc. D: Panel board operation status and warning display
K: operating part S: sensing part

Claims (9)

A warning system for a power supply and a power plant that steps down a high voltage power supplied from a substation to a commercial voltage and supplies the power to a customer,
An operation state detecting unit for detecting an operation state of a switchboard, a voltage / current state of a three-phase power source, a fire occurrence and a cable state, and outputting detected data;
A switchboard operating state and warning display unit for performing a fire alarm through an internal fire extinguisher in accordance with an input control signal, and a warning and an operating state according to a detected sensing signal;
A fire detection control unit for recognizing a fire situation inside and outside the power plant through the switchboard operation state detection unit and outputting a fire situation control signal when it is determined that a fire situation has occurred;
And a controller for receiving a voltage and current magnitude data of each phase of the three-phase power source output from the power and control unit operation state sensing unit to generate a balance state warning control signal for sensing a three-phase voltage and current balance state, And a fire suppression control signal generating unit for generating a fire suppression control signal according to a fire occurrence state based on the detection data of presence or absence of a fire generated by the switchgear operation state detection unit, A power control central control unit for generating a status check control signal;
A control signal amplifying driver for receiving various control signals output from the central control unit and driving various display devices of the power supply and relay panel and the alarm display unit;
A power supply unit for supplying power for operation of the configurations; And
And an operation unit for inputting a set value according to an operation mode and an operation of the switching center central control unit by an administrator or an official to manually cope with a situation according to the occurrence of a fire,
The switchgear operation state sensing unit includes a current sensing unit for sensing currents applied to the phases (R, S, T) with respect to a three-phase AC power source supplied from the outside;
A current AD converter for converting a current magnitude of each phase detected by the current detector into a digital signal and outputting the digital signal;
The switchgear operation state sensing unit includes: a voltage sensing unit that senses voltages applied to the phases (R, S, T) with respect to a three-phase AC power source supplied from the outside;
A voltage AD converter for converting a voltage of each phase detected by the voltage detector into a digital signal and outputting the digital signal;
A temperature sensing unit for sensing a temperature inside the switchgear;
A smoke detection unit for detecting smoke when a short circuit, an overload, an incomplete tightening of screws, or the like occurs in the interior of the switchgear and the smoke is generated due to overheating or fire;
An external fire sensor connection unit for connecting an external fire sensor for detecting a fire generated outside the switchboard; And
And a cable disconnection detecting unit for detecting whether a single-phase AC power source is input to the power line cable connected to the switchgear and for detecting a cable disconnected or stolen,
The switching center control unit receives data on the current and voltage magnitude of each phase output from the current A / D converter and the voltage A / D converter, detects a voltage / current balance state of the three phases, A control unit for generating a fire suppression control signal according to a fire generation state by receiving sensed data on the interior temperature of the switchboard and a fire generated by the fire detection control unit, And a cable state check control signal is generated in accordance with the occurrence of a cable disconnection or theft occurring in the cable disconnection detecting unit. The method according to claim 1,
And the main control unit detects the three-phase voltage and the current balance state to maintain the power distribution operation when an unbalanced situation occurs. delete The method according to claim 1,
The operation state LED display unit for displaying the operation state of the switchboard;
A seven-segment panel for displaying the voltage and current status of the three-phase power source and the single-phase power source and the temperature inside the distributor in numerical values;
A fire suppression driving unit for shutting off an external power input when a fire situation occurs and applying a predetermined heat to a temperature sensor portion of a fire extinguisher (powder type) or a diffusion fire extinguisher provided therein;
An alarm device for notifying external workers or persons of audible warning sound or visual warning light when a fire situation or cable theft occurs; And
And a distribution board identification for identifying the distribution boards. The method according to claim 1,
A fire situation manual operation unit for manually outputting a fire situation control signal by manually operating the fire detection control unit by an operator or an administrator;
And a switchboard operation switch section for operating the operation mode and operation state of the switchboard central control section. delete A switchboard operation state detecting unit for detecting an operation state of a switchboard, a state of a three-phase power supply, a fire occurrence, a cable state, and the like, and for outputting detected data, the switchboard for supplying a high voltage power supplied from a substation to a commercial voltage, A warning and display section for warning the fire according to the input control signal and warning and operating conditions according to the detected detection signal through the internal fire extinguisher; A fire detection control unit for recognizing a situation and outputting a fire situation control signal when it is determined that a fire situation has occurred, a control and central control unit for controlling the overall operation of the control and control system, and various control signals The operation state of the switchboard and the alarm table A control signal amplifying driver for driving various display devices and internal fire extinguishers of the city part, an operation section for inputting set values according to the operation mode and operation of the central control section by the manager or an official, A method of operating an integrated switchboard alarm system, comprising:
A first step of detecting a voltage and a current state of an incoming three-phase power source to determine whether the power source is unbalanced;
A second step of determining whether or not a fire situation has occurred in the power distribution panel by detecting the presence and temperature of smoke generated in the power transmission and distribution panel when it is determined that the power supply imbalance is not caused through the first process;
A third step of determining whether a fire situation has occurred from outside if it is determined that a fire situation has not occurred within the busbar through the second process;
A fourth step of determining whether a fire situation has not occurred outside the switchboard through the third process, if the connection cable is broken or stolen;
If it is determined through the first process that the power is unbalanced or a fire situation occurs outside the control panel through the third process or if it is determined that the connection cable is disconnected or stolen through the fourth process, A fifth step of issuing a differentiated alarm according to each situation and proceeding to a standby mode in which the manager waits for an action by the manager in accordance with the situation; And
If it is determined through the second process that a fire situation has occurred in the power and control panel, a sixth step is performed in which a fire is extinguished through the internal fire extinguisher, power cutoff and warning are generated, and a standby mode is awaited Wherein the operation of the integrated ward / The method of claim 7,
The second step includes a first step of detecting the internal temperature of the switchboard through a temperature sensor;
A second step of confirming whether smoke is generated inside the switchboard through the smoke detector;
If it is determined that the internal temperature of the switchgear detected through the first step has risen to a level higher than the fire alarm level (72 ° C to 90 ° C), an alarm for the occurrence of a fire is generated and an internal circuit breaker A third step of operating;
A fourth step of forcibly operating the internal fire extinguisher after the breaker is forcedly operated in the third step;
If it is determined that the internal temperature of the switchgear detected through the first step has not risen to the fire alarm level but has risen above the fire preliminary warning level (50 ° C to 60 ° C), a fire preliminary alarm ; And
If it is determined that the internal temperature of the switchgear detected through the first step has not risen to the fire preliminary warning level, it is determined whether smoke is generated inside the switchboard through the second step. If it is determined that smoke is generated inside the switchboard And a sixth step of generating a fire preliminary alarm indicating that there is a possibility of a fire. The method of claim 8,
In the fourth step,
A first step of waiting for a predetermined time after the breaker forced operation;
A second step of detecting an internal temperature of the switchgear during the time of the first step;
A third step of determining whether the internal temperature rises even after the power line is shut off in the process of detecting the internal temperature through the second step; And
And a fourth step of forcibly operating the internal fire extinguisher when it is determined that the internal temperature of the inside of the inside of the water is increased through the third step.

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