KR102646021B1 - Electric safety device using power induction - Google Patents

Abstract

The electrical safety device using power induction according to the embodiment is a device (ESSC, Electricity Shock Safety Catch) that stably catches electric shock. When installing the ESSC according to the embodiment, the leakage current is treated within 0.5 mA to 3 mA, thereby preventing flooding. Electric shock and fire prevention also prevents fires caused by electronic devices and lightning by blocking lightning from entering the secondary part of the distribution box through a special circuit. An electrical safety device using power induction prevents flooding, electric shock, and fire. It also prevents fires caused by electronic devices and lightning by blocking lightning from entering the secondary part of the distribution box through a special circuit.

Description

Electrical safety device using electric power induction {ELECTRIC SAFETY DEVICE USING POWER INDUCTION}

This disclosure relates to an electrical safety device using power induction, and specifically, to a device for ensuring electrical safety through power induction in the event of water leaks, short circuits, or lightning strikes.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and is not admitted to be prior art by inclusion in this section.

Due to economic development, the occurrence of electrical safety accidents is increasing due to the rapid increase in electricity consumption in industries and residential areas. Electrical accidents involving infants and young children or industrial workers during rainy weather, electric shock accidents due to flooding or water leaks, damage to life and property due to lightning or ground current, and electrical fires are all included in the scope of electrical safety accidents. Electrical safety accidents especially increase during the rainy season, and due to the increased moisture and high humidity in the environment, short circuits easily occur. In addition, in summer, more body parts are exposed to high temperatures, and the human body's resistance decreases due to sweat, which is one of the causes of increased safety accidents. In industrial sites, many electric shock accidents occur due to not wearing safety gear due to the summer heat, exposed wires on the floor, and working with wet gloves or clothing after rain. Electric shock accidents occur most often in factories and workshops, residential facilities, and transmission and distribution lines. The places where electric shock accidents occurred the most were industrial sites, such as factories and workshops, followed by residential facilities, and also occurred in transmission and distribution lines, outdoors, and at sea. In addition, according to the monthly occurrence status of electrical equipment accidents in the 2019 Electrical Disaster Analysis Statistical Report, the frequency of occurrences in July, when there is a lot of rainfall due to typhoons and monsoons, is the highest at 681 cases, or 12.2% of accidents that occurred throughout the year, and the temperature is high due to heat waves. It is reported that 522 and 527 cases, or 9.4% and 9.5%, occurred in August and September, and 513 cases, or 9.2%, occurred in January, when temperatures were low due to a cold wave.

Meanwhile, a surge is a transient waveform of electrical current, voltage, or power that is transmitted along a line or circuit and has the characteristics of rapidly increasing and slowly decreasing. On rainy or lightning days, you often experience power outages or phone outages, and when you turn on a light or electrical device, the audio sound is distorted or the TV screen trembles. Most of these causes are due to surges. Around us, advanced semiconductors are widely used in the electrical and electronic fields, and as a result, damage from surges is rapidly increasing. As the degree of integration of a semiconductor increases, the width of the circuit inside the semiconductor narrows, and as materials with excellent conductivity are used to operate at low voltage, the peak value of the short circuit phenomenon is lowered, so a system with a large number of semiconductors becomes weak against withstand voltage. In proportion, we are becoming more vulnerable to surges. The effect of surges on the system is like a disease that occurs in the human body. Repeated small surges deteriorate the elements and destroy them chronically, while strong surges destroy them all at once to the point where they cannot be sacrificed. In particular, in recent systems, it has become common to build a total system in which systems are combined by combining devices. This means that damage at one point can paralyze the entire system, and in extreme cases, it can even lead to serial damage to the entire system.

1. Korean Patent Registration No. 10-1645736 (2016.07.29) 2. Korean Patent Registration No. 10-2374950 (2022.03.11)

The electrical safety device using power induction according to the embodiment is a device (ESSC, Electricity Shock Safety Catch) that stably catches electric shock. When installing the ESSC according to the embodiment, the leakage current is treated within 0.5 mA to 3 mA, thereby preventing flooding. Electric shock and fire prevention also prevents fires caused by electronic devices and lightning by blocking lightning from entering the secondary part of the distribution box through a special circuit.

The electrical safety device using power induction according to the embodiment is grounded through the first ground part (A) and the second ground part (B) when the input voltage is applied, and an earth leakage detection device monitoring circuit (A1) is installed between line E and the ground. ) Attenuates the current from the leak through the circuit.

In the embodiment, when the input voltage of 220V is applied to line R and line S, the electric safety device operates in the first attenuation unit (CO1), the second attenuation unit (CO2), the third attenuation unit (C1), and the fourth attenuation unit (C2). a noise attenuation unit that suppresses noise when outputting from point U and point V; Includes. In the embodiment, a surge observer that attenuates surge and ground fault currents through switches F1 and F2 and variable resistors S1 and S2 of the input voltage applied to point U and point V; Includes.

In an embodiment a surge observer; If there is an abnormal surge voltage, switches F1 and F2 are shorted to protect the device, and if switches F1 and F2 are shorted, it indicates whether there is an error.

In an embodiment an electrical safety device; When an abnormal signal including a short circuit is detected, a communication unit transmits the abnormal signal to a manager terminal; Includes the Department of Communications; identifies the dangerous limit of the abnormal signal and transmits a signal matched to the identified dangerous limit to the manager terminal. Hazardous limits in examples; is stored as current threshold information for each phase, including human body condition and allowable contact voltage information.

Electrical safety devices using power induction as described above prevent flooding, electric shock, and fire, and prevent fires caused by electronic devices and lightning by blocking the inflow of lightning into the secondary part of the distribution box through a special circuit.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a diagram showing an example of connection of an electric safety device.
Figure 2 is a diagram showing a circuit diagram of an electrical safety device according to an embodiment.
Figure 3 is a diagram showing a specific circuit diagram of an electrical safety device according to an embodiment

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In describing embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. The terms described below are terms defined in consideration of functions in embodiments of the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

1 is a diagram showing an example of connection of an electric safety device.

Referring to FIG. 1, the input terminal R of the electrical safety device (ESSC, Electricity Shock Safety Catch) provided in the embodiment is connected to the primary input R, and the input terminal S is connected to the primary input S. In addition, the input terminal E of the electric safety device may be connected to the distribution box busbar or enclosure case, and the input terminal G may be connected to the outlet and the main body case of the device. Electrical safety devices according to embodiments include government facilities such as government offices and military units, communication base stations, power plants, railway and subway signal equipment, water supply points, electric charging stations, elevators, road traffic control panels, street lights, industrial sites, oil refineries, smart farms, and houses. , it can be installed and used in all facilities and spaces that use electricity, such as hospitals, banks, schools, apartment complexes, and sunbaek. The electrical safety device using power induction according to the embodiment is a device (ESSC, Electricity Shock Safety Catch) that stably catches electric shock. When installing the ESSC according to the embodiment, the leakage current is treated within 0.5 to 3 mA, preventing electric shock from flooding. , fire prevention also prevents fires caused by electronic devices and lightning by blocking lightning from entering the secondary part of the distribution box through a special circuit.

Figure 2 is a diagram showing a circuit diagram of an electrical safety device according to an embodiment.

Referring to FIG. 2, the electrical safety device according to the embodiment may be configured to include a noise attenuator 10 and a surge observer 20, and the surge observer 20 may be configured to include a communication unit 35. there is.

A surge observer is a combination of a protective condenser or surge arrester connected between the terminal of the protected device and the ground for the purpose of protecting the device from sudden shock intrusion waves. The protective condenser creates the effect of protecting the ground insulation between layers of the generator coil by gently reducing the wave height of the shock wave and reducing the wave height when the wave length is short. The electrical safety device according to the example provides surge and secondary ground fault current prevention and current attenuation functions using a surge absorber. Grounding (G) is connecting a part of an electric circuit or electronic equipment to the ground using a copper wire, and because it is grounded to the ground, it can be considered to have a uniform potential. Therefore, the potential value of the ground is considered 0. The purpose of grounding is to protect devices and the human body from electric shock and fire caused by surges, instantaneous high-voltage signals, and contact between electrical and electronic equipment and the body. If the case surrounding the equipment is made of metal and grounded, the potential of the case becomes 0. At this time, when a person touches the case with his hand, a potential difference occurs between the hand and the head, causing current to flow through the body. The electrical safety device using power induction provided in the embodiment prevents flooding, electric shock, and fire, and prevents fires caused by electronic devices and lightning by blocking lightning from entering the secondary part of the distribution box through a special circuit.

Figure 3 is a diagram showing a specific circuit diagram of an electric safety device according to an embodiment.

Referring to Figure 3, in the embodiment, the electric safety device is grounded through the first ground part (A) and the second ground part (B) when the input voltage (R, S) is input, and the line E and ground (G) In between, the electric current at the water leak is attenuated through the earth leakage detection device monitoring circuit (A1) circuit.

In the embodiment, when the input voltage of 220V is applied to line R and line S, the noise attenuation unit of the electrical safety device includes a first attenuator (CO1), a second attenuator (CO2), a third attenuator (C1), and a fourth attenuator. Noise is suppressed when outputting from point U and point V through the unit C2. In the embodiment, the first attenuation unit (CO1) and the second attenuation unit (CO2) are connected in parallel, and the third attenuation unit (C1) and the fourth attenuation unit (C2) are connected in series.

In an embodiment, the surge observer attenuates the surge and ground fault currents of the input voltage applied to point U and point V through switches F1 and F2 and variable resistors S1 and S2. In the embodiment, the surge observer protects the device by short-circuiting switches F1 and F2 when there is a surge voltage abnormality, and displays the abnormality when switches F1 and F2 are short-circuited.

In the embodiment, switch F1 and variable resistor S1 are connected in series, and switch F2 and variable resistor S2 are also connected in series. Switches F1 and F2 are connected in parallel, and variable resistor S1 and variable resistor S2 are also connected in parallel.

In an embodiment, when an abnormal signal including a short circuit is detected, the communication unit transmits the abnormal signal to the manager terminal. The communication department identifies the dangerous level of the abnormal signal and transmits a signal matched to the identified dangerous level to the manager terminal. The risk limit information provided in the embodiment is stored as current threshold information for each phase, including human body condition and allowable contact voltage information. The risk limit information provided in the embodiment may include types 1 to 4. Type 4 is a normal dry human body state, where the risk is low even if contact voltage is applied, and there is no risk of contact voltage being applied. Type 3 is a normal dry human body condition, and even if contact voltage is applied, the risk is low and the allowable contact voltage is 50V or less. Type 2 is a state in which the human body is significantly wet, and a part of the human body is constantly in contact with a metallic electromechanical device or structure, and the allowable contact voltage is 25V or less. Type 1 is a state in which most of the human body is underwater and the allowable contact voltage is 2.5V or less.

In an embodiment, the manager terminal can continuously receive abnormal signals and monitoring signals from the electrical safety device, and analyze the monitoring signal to predict the abnormal state of the electrical safety device. In the embodiment, the monitoring signal includes voltage and current data input and output from the electrical safety device, and the abnormal signal is a signal in which the monitoring signal exceeds a set threshold or is in a dangerous range.

In addition, in the embodiment, the manager terminal monitors electrical safety devices in real time to perform Prognostics and Health Management (PHM) through deep learning, detects abnormal signs early, predicts when a failure occurs, and predicts the timing of necessary maintenance. can be presented.

In an embodiment, the manager terminal communicates with an external server and can predict failure of electrical safety devices using artificial intelligence-based machine learning and deep learning. Machine learning and deep learning are techniques that use training data and verification data to learn, extract feature values, obtain weights, classify, or analyze correlations between data. In an embodiment, the manager terminal applies machine learning and deep learning to the diagnosis and prediction stages of PHM to diagnose the state or failure and propose a model to estimate the failure rate. In the decision support stage, the estimated failure rate and predicted useful time (RUL) are applied to the PHM. , Remaining Useful Life) can be used to determine the timing of predictive maintenance of electrical safety devices. In an embodiment, the manager terminal may collect data generated during the operation of an electrical safety device, and extract characteristic values or convert the size by converting the data to facilitate analysis of the monitoring data collected from the electrical safety device. Additionally, in the embodiment, the facility status can be evaluated using the converted data. In the embodiment, in order to detect abnormal signs of electrical safety devices early, a sensor-based technique is used to determine a process abnormality when the monitored data is greater than a threshold or the change pattern is different from normal, and parameters calculated from data in a normal state. A parameter analysis method determines a process abnormality if there is a large difference between the parameters calculated with actual data, and a process abnormality occurs if the difference between the value predicted by a pattern recognition model made from normal data and the value measured by the actual sensor is large. Using the residual analysis method, you can identify abnormal signs by evaluating the status of electrical safety devices. Additionally, in the embodiment, causal relationships between variables are probabilistically analyzed through a Bayesian network to extract a number of possible causes for abnormal signs of electrical safety devices. Afterwards, the time when a failure will occur is predicted through the predicted effective time (RUL) of the electrical safety device. In the embodiment, the timing for maintenance of the electrical safety device before a failure occurs is presented, and data generated in the previous step can be notified to users and managers through an interface such as a dashboard.

In an embodiment, at least one manager terminal may be implemented as a computer capable of accessing a remote server or terminal through a network. Here, the computer may include, for example, a laptop equipped with a navigation system and a web browser, a desktop, a laptop, etc. At this time, at least one manager terminal may be implemented as a terminal capable of accessing a remote server or terminal through a network. At least one manager terminal is, for example, a wireless communication device that guarantees portability and mobility, and includes navigation, personal communication system (PCS),

GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W -All types of handheld-based wireless devices such as CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) terminals, smartphones, smartpads, tablet PCs, etc. May include a communication device.

The disclosed content is merely an example, and various modifications and implementations may be made by those skilled in the art without departing from the gist of the claims, so the scope of protection of the disclosed content is limited to the above-mentioned specific scope. It is not limited to the examples.

Claims (7)

In an electrical safety device using electric power induction,
When the input voltage is applied, it is grounded through the first ground part (A) and the second ground part (B),
Attenuates the current in the leaked area through the earth leakage detection device monitoring circuit (A1) between line E and the ground.
The electrical safety device is
When the input voltage of 220V is applied to line R and line S, point U and point V pass through the first attenuator (CO1), the second attenuator (CO2), the third attenuator (C1), and the fourth attenuator (C2). A noise attenuation unit that suppresses noise during output;
A surge observer that attenuates surge and ground fault currents through the input voltage applied to the point U and point V through switches F1 and F2 and variable resistors S1 and S2;
When an abnormal signal including a short circuit is detected, a communication unit that transmits the abnormal signal to an administrator terminal;
The input voltage applied to the point U and point V is attenuated to surge and ground fault current through switches F1 and F2 and variable resistors S1 and S2.
the surge observer; Is
If there is a surge voltage abnormality, switches F1 and F2 are shorted to protect the device. If switches F1 and F2 are shorted, the abnormality is displayed.
the communication unit; Is
Identify the dangerous limit of abnormal signals and transmit signals matching the identified dangerous limit to the manager terminal.
The above dangerous limits; Is
It is stored as current threshold information for each phase, including human body condition and allowable contact voltage information.
The first attenuator (CO1) and the second attenuator (CO2) are connected in parallel, and the third attenuator (C1) and the fourth attenuator (C2) are connected in series,
The surge observer protects the device by short-circuiting switches F1 and F2 when there is a surge voltage abnormality, and displays the abnormality when switches F1 and F2 are short-circuited.
The switch F1 and variable resistor S1 are connected in series, and switch F2 and variable resistor S2 are also connected in series. Switches F1 and F2 are connected in parallel, and variable resistor S1 and variable resistor S2 are also connected in parallel.
The Department of Communications
Identify the dangerous limit of the abnormal signal and transmit the signal matched to the identified dangerous limit to the manager terminal,
The dangerous limit is stored as current threshold information for each situation including human body condition and allowable contact voltage information,
The dangerous system includes types 1 to 4,
Type 4 is a normal dry human body state, where the risk is low even if contact voltage is applied, and there is no risk of contact voltage being applied.
Type 3 is a normal dry human body condition, where even if contact voltage is applied, the risk is low and the allowable contact voltage is 50V or less.
Type 2 is a state in which the human body is significantly wet, and a part of the human body is constantly in contact with a metallic electromechanical device or structure, and the allowable contact voltage is 25V or less.
Type 1 is an electrical safety device characterized in that it is used when most of the human body is underwater and the allowable contact voltage is 2.5V or less. delete delete delete delete delete delete