KR102111027B1 - Arc detecting apparatus of a electric equipment - Google Patents

Abstract

The present invention relates to an arc detection apparatus for a power facility, capable of enabling low-power operation by transmitting a sensing signal to the outside by forming a bimetal, which is operated at a temperature generated by an arc from a power cable, between a wireless communication part and a battery. The arc detection apparatus includes a plurality of arc detection parts combined with a plurality of power cables of a power facility respectively and detecting a temperature generated in accordance with the generation of an arc to transmit the temperature to the outside through wireless communication. The each of the arc detection parts includes: a battery supplying power; a wireless communication part operated by receiving the power from the battery and delivering the detected arc information to the outside through wireless communication; and a bimetal formed between the battery and the wireless communication part and attached to the power cables to be turned on or off depending on a temperature generated from the power cables to selectively connect the battery and the wireless communication part and deliver a sensing signal to the outside through the wireless communication part.

Description

ARC DETECTING APPARATUS OF A ELECTRIC EQUIPMENT

The present invention relates to an arc detection device for a power facility, and more particularly, to an arc detection device for a power facility that detects the temperature of an arc occurring in a power cable and enables wireless transmission of the detected arc information.

In the current era, there is a need for a suitable electrical safety and a suitable electrical disaster prevention system for a user facility environment in a U-city environment using newly implemented ubiquitous technology, advanced information and communication technology, and space utilization technology.

Existing water distribution panels and distribution panels for low-voltage wiring were passive, but recently, electronic controllers have been combined to tend to develop in the direction of digital transmission by measuring the quality and amount of power. However, the existing distribution board or switchboard lacked important functions for measuring and transmitting hazards in electrical safety, so it was often insufficient to apply the convenience and safety of life to the U-city system to be solved by applying IT technology. .

In general, the main causes of electric fires during electrical disasters are short circuit, overcurrent, arc, and earth leakage. In addition, the main cause is also the case due to the environment of the user's surrounding facilities (submerged condition, gas, temperature, poor access to home outlets).

In particular, in the existing switchgear, power failures and electric accidents are frequently occurring without notice due to internal component failure and insulation deterioration. Because, in the existing switchgear, there was no way to detect arc and partial discharge in the switchgear so as to prevent blackouts and electric accidents.

In addition, in the distribution panel used in the home, the internal circuit breaker operates to cut off the power supply in case of a short circuit or overload, and the safety status of the distribution panel itself, gas information generated due to overload, overheating, etc. in the circuit breaker connection or wiring inside the distribution panel, Since there are almost no facilities that can provide information on the connection failure and power consumption in all buildings such as houses, apartments, shopping malls, buildings, etc., the ability to actually prevent fire accidents is insufficient.

The present invention has been devised to solve the above-described problem, and is configured to form a bimetal operating at a temperature generated by an arc in a power cable between a battery and a wireless communication unit, and transmit a sensing signal to the outside, thereby enabling low-power driving. The aim is to provide a device for detecting arcs in a facility.

The arc detection device of a power facility according to the present invention for achieving the above object is coupled to a plurality of power cables of the power facilities, respectively, and detects the temperature generated according to the occurrence of the arc and transmits it to the outside through wireless communication An arc detection unit, each arc detection unit includes a battery that supplies power, a wireless communication unit that operates by receiving power from the battery, and transmits the detected arc information to the outside through wireless communication, and the battery and the wireless communication unit It is configured between and is attached to the power cable, it is turned on or off according to the temperature generated by the power cable to selectively connect the battery and the wireless communication unit and comprises a bimetal to transmit the detection signal to the outside through the wireless communication unit It is characterized by.

The arc detection device of the power facility according to the embodiment of the present invention has the following effects.

 First, by constructing a bimetal operating at a temperature generated by an arc in a power cable between the battery and the wireless communication unit, power is supplied to the wireless communication unit through the battery in the event of an arc to transmit the detection signal to the outside to reduce battery consumption. .

Second, low-power driving is possible and interference with other points in the vicinity can be minimized by performing communication with each other by using weak radio waves between the plurality of arc detection units disposed in the power facility.

Third, the heat generated by the arc in the power cable is automatically turned on when the bimetal is above the reference temperature value of the bimetal, and power is supplied to the wireless communication unit through the battery to transmit the detection signal wirelessly, resulting in the mechanical power supply and operation of the bimetal. It can drive ultra-low power.

1 is a conceptual diagram schematically showing an arc detection device of a power facility according to the present invention.
FIG. 2 is a detailed configuration diagram showing the arc detection unit of FIG. 1 in more detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description and accompanying drawings, detailed descriptions of well-known functions or configurations that may obscure the subject matter of the present invention are omitted. In addition, it should be noted that the same components throughout the drawings are denoted by the same reference numerals as much as possible.

The terms or words used in the present specification and claims described below should not be construed as being limited to ordinary or lexical meanings, and the inventor is appropriate as a concept of terms to describe his or her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention. Therefore, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention, and does not represent all of the technical spirit of the present invention, and can replace them at the time of this application. It should be understood that there may be equivalents and variations.

1 is a conceptual diagram schematically showing an arc detection device of a power facility according to the present invention, and FIG. 2 is a detailed configuration diagram showing the arc detection unit of FIG. 1 in more detail.

1 and 2, the arc detection device of the power facility according to the present invention is coupled to a plurality of power cables 100 of the power facility, respectively, and detects the temperature generated according to the occurrence of the arc through wireless communication. It includes a plurality of arc detection unit 200 to be transmitted to the outside, each of the arc detection unit 200 is a battery 210 for supplying power, and operating by receiving power from the battery 210 and the detected arc information The temperature generated by the power cable 100 is configured between the wireless communication unit 220 and the battery 210 and the wireless communication unit 220 to be transmitted to the outside through wireless communication and attached to the power cable 100 Depending on whether it is turned on or off, the battery 210 and the wireless communication unit 220 are selectively connected, and a bimetal 230 that transmits a detection signal to the outside through the wireless communication unit 220 is made.

Here, the power facility is a low-voltage and high-voltage switchboard or distribution panel, motor control panel, solar inverter (power converter), solar connection panel, ESS, etc., various electrical control means inside the body of the metal enclosure and power cables connecting them to each other And a control panel in which a switch and a measuring instrument for controlling the control means are formed. Meanwhile, the distribution panel includes a household electric distribution box.

The bimetal 230 is turned on when the temperature of the power cable 100 reaches a reference temperature due to an arc, and supplies power to the battery 210 to the wireless communication unit 220 through the wireless communication unit 220. The detection signal according to the occurrence of arc is transmitted wirelessly.

The bimetal 230 blocks the power of the battery 210 from being supplied to the wireless communication unit 220 by maintaining the OFF state at a temperature below the reference temperature of the power cable 100, and is turned ON at a temperature above the reference temperature. The power of the battery 210 is supplied to the wireless communication unit 220.

The arc detection unit 200 is given a unique ID (240). Accordingly, it is possible to identify the exact point where the arc occurred according to the ID 240 and to more quickly repair a malfunction or extinguish a fire.

The arc detection unit 200 is coupled to the power cable 100 in the form of a C-shaped sleeve, that is, the arc detection unit 200 is coupled to the connection portion of the power cable 100 to detect and react to the temperature caused by the arc To be configured.

In the power facility, each arc detection unit 200 communicates by using weak radio waves with each other, and the arc detection unit 200 measures the temperature according to the arc generation from the generation unit to about 5 cm or more from the generation unit when the arc of the power cable 100 occurs. Sense and react.

The battery 210 uses a rechargeable battery. Meanwhile, the battery 210 is not limited to a rechargeable battery, and a coin battery may be used.

In the exemplary embodiment of the present invention, the wireless communication unit 220 uses self-network communication in the UHF band. Meanwhile, the wireless communication unit 220 includes a cellular network (eg, Global System for Mobile Communications (GSM), Enhanced Data Rates for GSM Evolution (EDGE), General Packet Radio Service (GPRS) including self-network communication in the UHF band, Including Code Division Multiple Access (CDMA), Time Division-CDMA (TD-CDMA), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), or other cellular network), Local Area Network (LAN), etc. Various types of networks can also be used.

For example, when the wireless communication unit 220 is a local area network, the local area network includes a wireless LAN, Wi-Fi, Bluetooth, zigbee, WFD (Wi-Fi Direct), UWB ( ultra wideband, infrared data association (IrDA), Bluetooth low energy (BLE), or near field communication (NFC).

As another example, if the network data access element (s) are part of a GSM network, the network data access element (s) may include a base transceiver station (BTS), base station controller (BSC), mobile switching center (MSC), and Serving SGSN. GPRS Support Node).

As another example, when the network data access element (s) are part of a LAN, the network data access element may include one or more network switches, routers, hubs, modems, and the like.

The bimetal 230 is made by superimposing two types of thin metals having different thermal expansion coefficients, that is, different degrees of expansion and contraction depending on temperature changes. As the temperature increases, the larger the thermal expansion coefficient, the more the thermal expansion coefficient expands and expands to the opposite side. . And when the temperature goes down again, it returns to its original state.

On the other hand, nickel (Ni) and iron (Fe) alloys are used as metals that do not expand well, and metals that expand well are nickel, manganese, iron alloys, nickel, molybdenum, iron alloys, nickel, manganese, and copper. Any one of (Cu) alloys is used.

The bimetal 230 may be configured to close or open a switch using a bending property according to temperature, and the bimetal 230 itself may be used as a switch to control a circuit.

Therefore, in the present invention, by using the properties of the bimetal 230 as described above, when the temperature generated by the arc in the power cable 100 rises higher than the reference, the switch is operated to prevent fire and the like. You can protect your device.

On the other hand, in the above, the technical idea of the present invention has been described with reference to the accompanying drawings, but this is merely illustrative of a preferred embodiment of the present invention and does not limit the present invention. In addition, it is obvious that anyone who has ordinary knowledge in the technical field to which the present invention pertains can make various modifications and imitation without departing from the scope of the technical spirit of the present invention.

100: power cable 200: arc detection unit
210: battery 220: wireless communication unit
230: bimetal 240: ID

Claims (10)

Each of the power equipment is coupled to a plurality of power cables and includes a plurality of arc detectors for detecting the temperature generated by the occurrence of the arc and transmitting it to the outside through wireless communication, wherein each arc detector is
A battery that supplies power,
A wireless communication unit that operates by receiving power from the battery and transmits the detected arc information to the outside through wireless communication;
It is configured between the battery and the wireless communication unit and is attached to the power cable and turned on or off according to the temperature generated by the power cable to selectively connect the battery and the wireless communication unit and transmit a detection signal to the outside through the wireless communication unit. Including bimetals,
When the temperature of the power cable reaches a reference temperature, the bimetal is supplied with battery power to the wireless communication unit to wirelessly transmit a detection signal according to an arc occurrence through the wireless communication unit,
Each arc detection unit in the power facility communicates with each other using weak radio waves,
The bimetal blocks the battery and the wireless communication unit by maintaining the OFF state at a temperature below the reference temperature of the power cable, and when the temperature of the power cable is above the reference temperature, it is turned on to connect the battery and the wireless communication unit.
The arc detection unit has a unique ID, is coupled to the power cable in the form of a C-shaped sleeve, is coupled to the connection portion of the power cable to detect the temperature according to the arc generation,
The arc detection unit arc detection device of the power facility, characterized in that for detecting the temperature of the arc generation from about 5cm to about 5cm from the generation unit when the arc of the power cable. delete delete delete delete delete delete delete delete The arc detection device of a power facility according to claim 1, wherein the power facility is any one of a power distribution panel, a solar inverter, a solar connection panel, a distribution panel, a motor control panel, an ESS, and a household electrical distribution box.

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