KR102114225B1 - Systems and methods for safety management of EES and contacts in electrical transmission and distribution systems - Google Patents

Abstract

According to the present invention, disclosed are a method and a device for managing electrical safety through arc-corona detection. Provided is a method for preventing a potential accident of a system through arc-corona detection in an electrical contact point included in an electrical system. Furthermore, efficient safety management system between a renewable energy system, an energy storage system (ESS), and an energy management system (EMS) is provided through a parameter using detection of temperature, arc, corona, frequency and the like.

Description

Systems and methods for safety management of EES and contacts in electrical transmission and distribution systems}

By way of one disclosure, the present invention is a method for effectively detecting the occurrence of arc / corona and controlling the operation of the system efficiently through an electric safety accident prevention and autonomous driving algorithm through contactless sensing at an electrical contact included in the system. And systems.

The energy storage system (ESS) is composed of a power conditioner system (PCS), a battery and a battery management system (BMS), and an energy management system (EMS). As a system that can be supplied to the city, it is widely used for peak reduction, frequency adjustment, renewable connection, and emergency generator replacement.

In particular, the energy storage system (ESS) has a number of protection devices to prevent imbalance due to other factors, such as changes in the surrounding environment, and the problem of circuit damage due to an unexpected sudden voltage or current generated by the electric shock. It is provided.

When the arc occurs, the temperature and pressure reach the maximum within 15 to 25 ㎳ hours, and the energy storage system (ESS) equipment is burnt out. Secondary damage, such as a power outage, is caused by the burnout of the internal device.

In addition, as the most frequent accident occurring in the energy storage system (ESS) by arc, there is a problem that leads to an internal fire as the duration increases, and there is a problem that can cause serious human damage if the user is exposed to the arc. .

ECP (Electrical Contact Point), which occupies an important part of the recently trending ESS system, is highly likely to deteriorate or ignite due to various causes. The electrical safety protection device used in electrical equipment is an overload breaker or an earth leakage breaker, which detects and blocks short-circuit, overcurrent, and leakage currents, and recently, an arc breaker is partially used to secure electrical safety. This electric safety protection device is a technology that detects and blocks after an accident occurs on a single element such as overcurrent, leakage current, and arc.

In addition, in the case of electrical equipment that uses an electrical safety protection device, since it has various load patterns, it is not possible to know the cause of the blocking, such as the breaker, etc. due to the operating characteristics and malfunction of the protection device. However, it is impossible to predict the electric disaster ahead, which can lead to a major accident in the event of a fire.

Therefore, the need for technology to prevent potential accidents in the EMS system and to improve operational stability by detecting in real time the occurrence of arc as a prognostic symptom and corona occurrence as a prognostic symptom in abnormal situations due to ECP temperature overheating and electrical abnormality. This increased.

(Prior Art 1) Republic of Korea Patent Publication No. 10-2017-0181245 (published on December 27, 2017) (Prior Art 2) Japanese Patent Publication No. 2017-510033 (published April 06, 2017)

According to an embodiment of the present invention, in order to solve the above problems, in the present invention, the safety of the EMS system is more efficiently detected by detecting the occurrence of arcs and coronas as a precursor to fire in the event of overheating or electrical abnormality of the ECP temperature. It provides a method to prevent and manage.

A method for managing an electrical safety accident through arc-corona detection according to the first embodiment includes detecting electromagnetic signals from a plurality of electrical contacts included in an energy storage system (ESS), and detecting electromagnetic signals from a plurality of electrical contacts Determining whether the reception strength of the corresponding to the predetermined reference range, if the reception strength of the electromagnetic wave signal corresponds to the reference range, analyzing the signal measured at the electrical contact where the electromagnetic wave signal is detected, of the measured signal Analyzing at least one of the magnitude, frequency of occurrence, duration, pattern conversion, shoulder, shape change of the waveform included in the signal and voltage drop, and the operation of the energy storage system (ESS) based on the analyzed signal. Generating a level of the alert notification information, transmitting the alert notification information to an external terminal according to the level of the alert notification information, and controlling the operation of the energy storage system (ESS) according to the level of the alert notification information. It can contain.

The apparatus for managing an electrical safety accident through arc-corona detection according to the second embodiment includes sensing including a plurality of UHF antenna sensors detecting electromagnetic signals generated from a plurality of electronic contacts included in an energy storage system (ESS). The unit includes an A / D converter that converts an analog signal detected at a plurality of electronic contacts in an energy storage system (ESS) into a digital signal, a processor, and a memory that stores instructions executable by the processor, and the processor By executing, it detects an electromagnetic wave signal from a plurality of electrical contacts included in the energy storage system (ESS), and determines whether the reception strength of the electromagnetic signal detected by the plurality of electrical contacts falls within a predetermined reference range in order to determine an error. If it is determined, and the reception strength of the electromagnetic wave signal falls within a predetermined reference range, the signal measured at the electrical contact where the electromagnetic wave signal is detected is analyzed, and the magnitude, frequency, duration, pattern conversion, and shoulder of the measured signal ( Shoulder), analyzes at least one of the shape change and voltage drop of the waveform included in the signal, and generates a level of alarm notification information related to the operation of the energy storage system (ESS) based on the analyzed signal, and Depending on the level, the alarm notification information may be transmitted to an external terminal, and the operation of the energy storage system (ESS) may be controlled according to the level of the alarm notification information.

According to the third embodiment, the non-transitory computer-readable storage medium storing instructions executable by the processor may include instructions for performing a method of managing an electrical safety accident through arc-corona detection.

By one initiation, it is possible to detect the occurrence of an arc due to the overheating of the ECP temperature and the occurrence of an electrical abnormality, and at the same time, to detect the occurrence of corona as a precursor symptom of a fire, thereby improving the safety of the system.

According to one disclosure, a platform suitable for the characteristics of a system application environment can be efficiently constructed by operating a system using self-developed open source software.

By one start, it is possible to apply an autonomous driving system using sensing information regarding temperature, voltage, current, and physical and electrical safety signs, thereby enabling efficient system operation.

When an error occurs in the system due to one start, it is possible to efficiently manage an error occurring during operation of the system by notifying the user through a four-step alarm.

By one start, it is possible to provide an effect to ensure the stability of the system through real-time monitoring of external accident factors and sensing of electrical parameters related to operation between the renewable energy system, the energy storage system, and the energy management system. .

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view schematically showing the configuration of an apparatus for managing an electrical safety accident through arc-corona detection by one disclosure.
2 is a flowchart illustrating a method of managing an electrical safety accident through arc-corona detection by an initiation.
3 is a flowchart illustrating a method of controlling the operation of the energy storage system (ESS) according to whether an arc-corona is detected by one start.
4 is a view for explaining the configuration of a Safety-EMS data processing system according to one disclosure.
5 is a view for explaining an RF detector for UHF electromagnetic wave measurement according to one disclosure.
6 is a flowchart illustrating a method for managing an electrical safety accident in an electrical safety management device according to one disclosure.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. This example is not intended to be limiting.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

The spatially relative terms “below”, “beneath”, “lower”, “above”, “upper”, etc., are as shown in the figure. It can be used to easily describe the correlation of members or components with other elements or components. The spatially relative terms should be understood as terms including different directions of the member in use or operation in addition to the directions shown in the drawings. For example, when the member shown in the drawing is turned over, “upper” may be interpreted as “lower”. The member can also be oriented in other directions, so that spatially relative terms can be interpreted according to the orientation.

The terminology used herein is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, "comprises" and / or "comprising" refers to the components, steps, actions and / or elements mentioned above, the presence of one or more other components, steps, actions and / or members. Or do not exclude additions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains. In addition, terms defined in the commonly used dictionary are not ideally or excessively interpreted unless specifically defined.

Also, the term "part" as used in the specification means a hardware component such as software, FPGA, or ASIC, and "part" performs certain roles. However, "part" is not meant to be limited to software or hardware. The "unit" may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors. Thus, as an example, "part" refers to components such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, Includes subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, database, data structures, tables, arrays and variables. The functionality provided within components and "parts" may be combined into a smaller number of components and "parts" or further separated into additional components and "parts".

1 is a view schematically showing the configuration of an apparatus for managing an electrical safety accident through arc-corona detection by one disclosure.

An apparatus for managing electrical safety accidents through arc-corona detection by one disclosure (hereinafter referred to as 'electrical safety management device 100').

The electrical safety management apparatus 100 according to one disclosure may include a sensing unit 110, an A / D converter 120, a communication unit 130, a user interface 140, a processor 150, and a memory 160. have.

By one disclosure, the sensing unit 110 may include a plurality of UHF antenna sensors for detecting electromagnetic signals generated from a plurality of electronic contacts included in the energy storage system (ESS).

According to one disclosure, the electrical safety management apparatus 100 may include a plurality of UHF antenna sensors for each of a plurality of electrical contacts included in an energy storage system (ESS), or for a certain area. The sensing unit 110 may include a plurality of channels for detecting electromagnetic waves and ultraviolet rays generated at electrical contacts.

By one start, the A / D converter 120 may convert an analog signal to a digital signal. In general, the amplitude of the arc signal varies greatly depending on where the arc occurs in the system. Because of this fact, it is important to make the detector work properly over a wide range of amplitudes, so that the A / D converter 120 can be configured, thereby converting an analog signal to a digital signal.

The A / D converter 120 according to one disclosure converts the DC voltage output through the amplifier into a digital signal and transmits it to the processor 150. The processor 150 receives the DC voltage converted into the digital signal and determines the partial discharge or arc size, frequency, and place of occurrence.

The electric arc current by one initiation can lead to a disordered frequency spectrum. For example, the spectrum of the arc extends from DC through the entire radio frequency spectrum to microwave and light emission. Accordingly, it is possible to detect the arc type by comparing the signal output through the A / D converter 120 with a predetermined arc reference value, and a unique ID value and memory provided from the UHF antenna sensor included in the sensing unit 110. It is to determine the arc generation position by referring to the installation position for the unique ID value stored in. That is, in the present invention, it is possible to provide not only information that the arc has occurred to the manager, but also the type of arc and the exact location where the arc has occurred.

By one start, the sensing unit 110 may also include a temperature sensor. By way of one disclosure, the electrical safety management device 100 may measure the temperature around the electrical contact using a temperature sensor installed close to the electrical contact.

When the measured temperature exceeds the temperature threshold, the electrical safety management device 100 may determine that an abnormality has occurred in the electrical contact. The temperature threshold by one start is the temperature at which the electrical contact can be judged to have an abnormality, which can be determined by the user and automatically set by reflecting the working environment, system operation method, weather, and season. Can be. In addition, the electrical safety management device 100 can prevent the failure or worsening of the system by automatically stopping the system when the measured temperature exceeds the temperature threshold.

In addition, the electrical safety management apparatus 100 may generate a control signal for controlling the cooling system included in the energy storage system ESS based on the range in which the measured temperature exceeds the temperature threshold. According to one disclosure, the cooling system may be a blowing fan installed inside the energy storage system (ESS), and may include an air conditioner device supplied from outside the energy storage system (ESS). The cooling system is a device for lowering the temperature inside the energy storage system (ESS), and does not limit the method.

By one disclosure, the electrical safety management device 100 may re-measure the temperature at the electrical contact in real time and control the operation of the cooling system based on the re-measured temperature. For example, when the temperature measured in real time is higher, the intensity of the cooling system may be increased to operate, and when the measured temperature is lowered, the intensity of the cooling system may be lowered to operate.

The electrical safety management apparatus 100 may generate a control signal for stopping the cooling system when the re-measured temperature is determined to be below a threshold by one start. By one start, when it is determined that the re-measured temperature is below the threshold, it can be determined that the system is normalized, and the electrical safety management device 100 may operate the stopped system again.

By one disclosure, the communication unit 130 may include one or more components that enable communication with an external terminal or an external server. For example, the communication unit 130 may include a short-range communication unit, a mobile communication unit, a broadcast reception unit, an Eternal communication unit, and the like. In addition, the communication unit 130 may use a basic line of TCP / IP or a dual auxiliary line of LoRa.

Short-range wireless communication unit (short-range wireless communication unit), Bluetooth communication unit, BLE (Bluetooth Low Energy) communication unit, short-range wireless communication unit (Near Field Communication unit), WLAN (Wi-Fi) communication unit 1500, Zigbee (Zigbee) communication unit, infrared (IrDA) , infrared Data Association (WFD) communication unit, WFD (Wi-Fi Direct) communication unit, UWB (ultra wideband) communication unit, Ant + communication unit, and the like, but are not limited thereto.

The mobile communication unit transmits and receives a radio signal to and from at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text / multimedia message.

The broadcast receiving unit receives a broadcast signal and / or broadcast related information from the outside through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel.

External terminals are mobile phones, smart phones, notebook computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), cameras, navigation systems, and tablet computers. ), An e-book terminal, a smart watch, and the like.

By one disclosure, the external server may include a local energy community server, an operation management server, a safety management server, a public institution server, and the like, but is not limited thereto.

By way of one disclosure, the user interface 140 may include a device that shows the user the processor performed by the electrical safety management device 100. In addition, the user interface 140 may mean a user input means for controlling the electrical safety management device 100. According to one disclosure, the user interface 140 may mean a device including a display or a means including a user input means. The user interface 140 includes a key pad, a dome switch, a touch pad (contact capacitive method, pressure resistive method, infrared detection method, surface ultrasonic conduction method, integral tension measurement method, Piezo effect method, etc.), a jog wheel, a jog switch, and the like, but are not limited thereto.

According to one disclosure, the processor 150 detects an electromagnetic wave signal from a plurality of electrical contacts included in the energy storage system (ESS) by executing instructions by the processor, and the reception strength of the electromagnetic signal detected from the plurality of electrical contacts is In order to determine an error, it is determined whether it is within a predetermined reference range, and when the reception strength of the electromagnetic wave signal falls within a predetermined reference range, the signal measured at the electrical contact where the electromagnetic wave signal is detected is analyzed, and the measured signal Analyze at least one of the magnitude, frequency of occurrence, duration, pattern conversion, shoulder, shape change of the waveform included in the signal and voltage drop, and operate the energy storage system (ESS) based on the analyzed signal. The level of the alert notification information may be generated, the alert notification information may be transmitted to an external terminal according to the level of the alert notification information, and the operation of the energy storage system (ESS) may be controlled according to the level of the alert notification information.

According to one disclosure, the processor 150 may use software suited to the characteristics of the application environment of the energy storage system (ESS). By one disclosure, the processor can perform efficient system management using sensing information such as temperature, voltage, current, and physical electrical safety indication prediction function. By one start, the processor 150 may operate an autonomous driving system.

By one disclosure, the OS used by the processor 150 may include Ubuntu, linux, and Development may include JQuery, XAMPP, and Raspberry Pi. Also, Hadoop and MysQL can be applied as databases. In addition, applications such as MariaDB, OpenERP, OpenEMR, and TurnKey Linux can be used.

By one disclosure, the memory 160 may store a program for processing and control of the processor 150, and may store data input to or output from the device of the present invention. Programs stored in the memory 160 may be classified into a plurality of modules according to their functions. Here, the plurality of modules are software, not hardware, that are functionally operating modules.

2 is a flowchart illustrating a method of managing an electrical safety accident through arc-corona detection by an initiation.

In block 201 according to one disclosure, the electrical safety management device 100 may detect an electromagnetic wave signal from a plurality of electrical contacts included in the energy storage system ESS. According to one disclosure, the energy storage system ESS may include a plurality of sensors and channels for detecting electromagnetic signals at a plurality of electrical contacts.

Electrical contact point (ECP) is the part where two conductors contact when using an electric circuit, occupies an important part of the electrical safety element included in the energy storage system (ESS), and may be deteriorated or ignited due to various causes. high portential. therefore. It is possible to prevent and stabilize potential accidents of the system by proactively detecting normal signs of overheating and electrical abnormalities at electrical contacts.

In block 202 according to one disclosure, the electrical safety management apparatus 100 may determine whether a reception intensity of an electromagnetic wave signal detected by a plurality of electrical contacts falls within a predetermined reference range. According to one disclosure, a predetermined reference range may refer to a reception strength of an electromagnetic wave signal of 42 dBuV / m to 70 dBuV / m as a predetermined reference range to determine whether an arc has occurred at an electrical contact. Preferably, the predetermined reference range may mean the reception strength of an electromagnetic wave signal of 55 dBuV / m to 65 dBuV / m.

The electrical safety management apparatus 100 according to one disclosure may determine whether a partial discharge or an arc occurs and the type of the partial discharge or arc using the reception strength of the electromagnetic wave signal. The type of partial discharge may be Corona, Void, or Floating Particle. As previously known, depending on the type of discharge, the phase distribution, signal level and number of signals have different aspects. Therefore, it is possible to determine whether or not partial discharge and the type of partial discharge are performed using the phase distribution, the signal level, and the number of signals.

Electricity accidents are mostly caused by explosions and fires caused by overheating. In particular, power accidents caused by overheating occur in all types of contacts, connectors, plugs, and rotating parts of power equipment constituting power facilities, and the main causes are aging, corrosion, loosening, overload, or fine dust. The electric power accident caused by the overheating causes an abnormal overheating phenomenon before the accident occurs. Therefore, it is possible to efficiently operate the system by detecting the arc-corona at the electrical contact.

In block 203 according to one disclosure, the electrical safety management apparatus 100 may analyze various signals measured at the electrical contact where the electromagnetic wave signal is detected when the reception strength of the electromagnetic wave signal corresponds to a reference range. For example, various signals measured in the electric power may include information such as size, pattern, and frequency of current, voltage, frequency, and power.

For example, the electrical safety management apparatus 100 may mask a predetermined unit by setting a noise frequency band among frequency bands. Here, the noise frequency masting is used in a narrow-band diagnosis to mask the noise band mainly generated in the field. At this time, the masking of the noise frequency band may set a frequency of 300 MHz to 1.5 GHz in units of 10 MHz. Subsequently, the frequency of 300 MHz to 1.5 GHz may be selected in 300 MHz units for narrowband diagnosis. Narrowband diagnostics can collect data from 300MHz to 1.5GHz in 10MHz increments.

According to another embodiment, the step of analyzing the signal measured at the electrical contact where the electromagnetic wave signal is detected is amplified and output the electromagnetic wave signal, and when the frequency of the amplified electromagnetic wave signal corresponds to 300 MHz to 1.5 GHz, at the electrical contact It may include a broadband diagnosis step of primarily determining whether an arc-corona occurs.

In addition, when it is determined that the arc-corona has occurred in the broadband diagnosis step, the electrical safety management apparatus 100 divides the entire frequency band into 10 MHz bands, removes noise bands, and uses PRPD and PRPS analysis techniques to perform arcing. -It may include a narrow-band diagnosis step to determine whether the corona occurs secondarily.

Therefore, the electrical safety management device 100 determines that the arc-corona has occurred only when it is determined that both arc-corona has occurred through the broadband diagnosis and the narrow-band diagnosis. At the same time, it has a small noise effect, which is an advantage of band diagnosis, and can heal a large noise effect, which is a disadvantage of broadband diagnosis, and a slow diagnosis speed, which is a disadvantage of narrowband diagnosis.

In addition, the electrical safety management device 100 may convert an analog signal measured at an electrical contact where an electromagnetic wave signal is detected into a digital signal. In general, the amplitude of the arc signal varies greatly depending on where the arc occurs in the system. Because of this, it is important to make the detector work properly over a wide range of amplitudes, so A / D conversion can be performed.

In block 204 according to one disclosure, the electrical safety management device 100 may include at least one of a measured signal size, frequency, duration, pattern conversion, shoulder, shape change of a waveform included in the signal, and voltage drop. Can be analyzed.

According to one disclosure, when the size of a data signal acquired through wideband and narrowband diagnosis (W / N) is smaller than the size of an event signal when diagnosing whether an arc-corona signal is generated using a plurality of sensors, the switching unit Use to select the first UHF antenna sensor for the next channel.

Subsequently, if the size of the acquired data signal is greater than a predetermined signal size, the number of discharges of the data signal acquired through the broadband diagnosis and the number of discharges of the partial discharge or arc data signal obtained through the narrowband diagnosis are compared and determined. If the number of discharges of the data signal acquired through the wideband diagnosis (W) is greater than the data signal obtained through the narrowband diagnosis (N), the selection frequency is increased in 10 MHz increments for the narrowband diagnosis and the selection frequency is increased. It receives frequency and acquires partial discharge or arc data signal through narrow band diagnosis.

Subsequently, the size of the data signal obtained through the broadband diagnosis is compared with the size of the partial discharge or arc data signal obtained through the narrowband diagnosis. If the size of the data signal acquired through the wideband diagnosis is greater than the data signal obtained through the narrowband partial discharge diagnosis, the selected frequency is increased in 10 MHz increments for the narrowband diagnosis, and the selected frequency receives the increased selected frequency Data signals can be acquired through narrow-band diagnostics.

Subsequently, if the number and size of occurrences and magnitudes of the data signals acquired through the broadband diagnosis are smaller than the number and size of occurrences of the data signals obtained through the narrowband diagnosis, the second UHF antenna sensor installed outside may be selected through the switching unit. According to one disclosure, the UHF antenna may be installed inside and outside the electrical safety management device 100.

Subsequently, the partial discharge or arc signal detected from the second UHF antenna sensor may be received to perform broadband partial discharge diagnosis to obtain data. Wideband and narrow band receiving partial discharge or arc signal detected through the second UHF antenna sensor and receiving partial discharge or arc signal detected from multiple first UHF antenna sensors and the number of discharges of data signals obtained through broadband diagnosis The number of discharge (arc) of the data signal obtained by diagnosis is compared.

If the size of the data signal acquired through the second UHF antenna sensor is greater than the size of the data signal acquired through each of the first UHF antenna sensors, the first UHF antenna sensor is selected while cycling through the switching unit. Subsequently, if the number and magnitude of discharges (arc) of the data signal obtained from each first UHF antenna sensor is greater than the number and magnitude of discharges (arc) obtained from the second UHF antenna sensor, the results of the broadband and narrowband diagnosis are partial discharge or It determines that it is an arc and sends an event signal

In block 205 according to one disclosure, the electrical safety management device 100 may generate a level of alert notification information related to the operation of the energy storage system ESS based on the analyzed signal.

In block 206 according to one disclosure, the electrical safety management device 100 may transmit the alarm notification information to an external terminal according to the level of the alarm notification information. By one start, the alarm notification information may be sequentially generated according to a configuration operated according to the four-stage alarm system.

In block 207 according to one disclosure, the electrical safety management device 100 may control the operation of the energy storage system ESS according to the level of the alarm notification information.

For example, the electrical safety management device 100 analyzes the degree of partial discharge or arc-corona signal and partial discharge or arc-corona occurrence location according to the results of the partial discharge and arc-corona diagnosis, and provides the user with the upper HMI, A trip signal that generates an alarm signal using a mobile application, etc., and blocks a switch (for example, ACB, VCB) or a switch for controlling a plurality of electrical contacts (for example, MCCB) according to the degree of danger. Can cause

The electrical safety management device 100 can be largely set to three modes: manual operation, scheduling operation, and autonomous operation. By one start, manual operation is a method in which most of the peripheral devices constituting the EMS are operated by the user. In general, it can be used for the purpose of maintenance or testing of the energy storage system.

Scheduling operation by one start may be used before activating the charging or discharging function at a specific time regardless of whether the device is in a state. That is, the electrical safety management device 100 may control the system to be operated only in a predetermined time period. Depending on the condition of the peripheral device, it may affect hardware performance, but it is a function mainly used for commercial purposes.

An autonomous driving function by one start means a system that autonomously determines and enforces the operation, stop, emergency alarm, and response information of the entire system, including charging and discharging functions, which are classified as main functions when operating hardware. According to a risk factor according to a real-time or periodic monitoring result by one start, it may be determined whether an autonomous driving or a stop function of the operation is applied.

By one start, the electrical safety management apparatus 100 may execute an autonomous driving function that controls the operation and stop of the system according to the detection of the arc-corona and also the degree of danger of the arc-corona.

3 is a flowchart illustrating a method of controlling the operation of the energy storage system (ESS) according to whether an arc-corona is detected by one start.

In block 301 according to one disclosure, the electrical safety management device 100 may first perform arc-corona detection in order to control the operation of the system according to whether the arc-corona is detected. By one disclosure, the electrical safety management apparatus 100 may check whether the reception strength of the electromagnetic wave signal detected from the electric power is within the reference range of 42 dBuV / m to 70 dBuV / m. Also, preferably, it may be determined whether the reception strength of the electromagnetic wave signal is included in 50 to 65 dBuV / m.

In block 302 according to one disclosure, the electrical safety management device 100 may determine in real time whether to judge the reference range. Alternatively, the electrical safety management device 100 may periodically check the reception strength of electromagnetic waves detected at a plurality of electrical contacts. Here, that the reception strength of the electromagnetic wave signal is included in the reference range means that an ideal symptom has occurred at the electrical contact.

In block 303 according to one disclosure, the electrical safety management device 100 may analyze the signal measured at the electrical contact to determine whether the system is operating normally. When the reception strength of the detected electromagnetic wave signal is included in the reference range, the electrical safety management apparatus 100 may determine that an arc-corona has occurred at the electrical contact where the electromagnetic wave signal is generated.

According to another embodiment, the electrical safety management apparatus 100 may diagnose whether an arc-corona has occurred using a digital signal (hereinafter, referred to as a first digital signal) received from an A / D converter.

Specifically, the electrical safety management device 100 is a signal synchronized to a specific frequency, for example, the phase distribution of the first digital signal based on 60 Hz, the level of the first digital signal, the first digital signal in a preset section The number of occurrences is used to determine the type of arc-corona, including whether the arc-corona has occurred. In addition, since the UHF antenna sensor is installed in each zone, it is possible to accurately diagnose the location of the zone where partial discharge or arc-corona occurs.

Here, the type of partial discharge may be Corona, Void, or Floating Particle. As previously known, depending on the type of discharge, the phase distribution, signal level and number of signals have different aspects.

In addition, the arc is generated in the form of plasma, which causes a discharge phenomenon due to cable deterioration, insufficient connection state of the connection terminal, and the like. Therefore, it is possible to determine whether partial discharge or arc is generated and the type of partial discharge or arc using the phase distribution, signal level, and number of signals. For example, the electrical safety management apparatus 100 floats when the phase distribution of the first digital signal is concentrated at 180 degrees, and the signal exceeding the reference signal level Vref exceeds 3 times during the reference time Δt. It can be determined that discharge has occurred.

In addition, the partial discharge diagnosis using the phase distribution, signal level and number of signals is a matter that can be arbitrarily changed by the designer. For example, the designer may determine whether a partial discharge or arc occurs and the type of partial discharge or arc depending on whether a digital signal has a phase distribution concentrated on a specific phase and a digital signal exceeding a preset number of times exists within a preset time. It can be designed to be diagnosed.

In addition, the electrical safety management apparatus 100 may measure load current and voltage at a plurality of electrical contacts, respectively, according to a predetermined cycle. At this time, the electrical safety management device 100 may convert the measured load current and load voltage into a digital signal.

In addition, the electrical safety management apparatus 100 may measure the image current of each load at a plurality of electrical contacts according to a predetermined cycle, and convert the measured image current into a digital signal.

The electrical safety management device 100 differentiates the load current to derive the change rate and phase of the load current, differentiates the load voltage to derive the load voltage change rate and phase, and differentiates the image current to determine the image current change rate and the image current phase. Can be derived.

In addition, the electrical safety management device 100 by one start, the electrical safety management device 100 compares the derived analysis value with a value of a preset normal category, and determines whether or not the analysis value deviates from a normal category value. I can judge.

In block 304 according to one disclosure, the electrical safety management device 100 may determine that the system is operating normally when it is determined that the received intensity of the detected electromagnetic wave signal is not included in the reference range. Therefore, since there is no need to determine whether there is another error, the signal measured at the electrical contact is not collected and ends without analysis.

In block 305 according to one disclosure, the electrical safety management device 100 may generate first to fourth level alert notification information at 10 second intervals.

By one start, the first level is generated by receiving the signal measured from the electrical contact, and the alert notification information of the first level may include information analyzing the signal received from the electrical contact where the abnormality has occurred. That is, the first level is instantaneously generated when arc-corona has occurred at the electrical contact.

The second level generates second level alert notification information 10 seconds after the first level alert notification information is generated, and the second level alert notification information may include information about an abnormality of the electrical contact. . Accordingly, the second level alert notification information may include information about current, voltage, frequency, and the like at the electrical contact.

The third level generates third level alert notification information 10 seconds after the second level alert notification information is generated, and the third level alert notification information determines whether to stop the operation of the energy storage system (ESS). Information. That is, the third level of alarm notification information may include a result of the determination as to whether the user stops the operation or automatically stops it if it is not manually stopped.

When the user receives the third level alert notification information, the user can manually determine whether to stop the system.

 The fourth level generates the fourth level alarm notification information 10 seconds after the third level alarm notification information is generated, and the fourth level alarm notification information automatically stops the operation of the energy storage system (ESS). It may contain an order.

In addition, the electrical safety management apparatus 100 may generate first level to fourth level alarm notification information and transmit it to a terminal of a local energy community, a user terminal, an operation server, and an operation manager terminal registered in advance.

By one start, the electrical safety management apparatus 100 may be selectively set to transmit the first level alarm notification information to an external terminal or an external server, and the alarm notification information generated after the second level is public institution and safety management Can be set to be sent to the server at the same time.

In block 306 according to one disclosure, the electrical safety management device 100 may generate alarm notification information and simultaneously detect an arc-corona occurrence in real time. Therefore, there is an advantage that it is possible to monitor in real time whether the arc-corona outbreak is temporary or becoming more serious.

In block 307 according to one disclosure, the electrical safety management device 100 may automatically stop the operation of the system when it is determined that the occurrence of the arc-corona is detected or deteriorated in real time.

At block 308 by one disclosure, the electrical safety management device 100 may automatically resume operation of the system when it is determined that the occurrence of the arc-corona has been stopped or alleviated.

In addition, the electrical safety management device 100 periodically monitors the electrical contacts included in the energy storage system (ESS), thereby providing monitoring information related to series arc, parallel arc, ground arc, corona occurrence and temperature change at the electrical contacts. Can be created. The electrical safety management device 100 may generate monitoring information in real time or periodically.

In addition, the electrical safety management device 100 may provide monitoring information as a user interface generated according to the HTML5 standard. At this time, the user interface means a convenient UI for users to use the data such as alarms, predictions, and statistics managed by EMS Middleware in compliance with the HTML5 standard.

In addition, the electrical safety management device 100 may transmit monitoring results through a unique mobile app.

4 is a view for explaining the configuration of a Safety-EMS data processing system according to one disclosure.

By way of one disclosure, the processor of the electrical safety management apparatus 100 may consist of a virtual device, middleware, and a user interface.

By way of one disclosure, the virtual device can be connected to at least one power device to perform a function of fetching data. For example, the virtual device may bring data such as a power generation state and a system operating state by communicating with at least one power devices through serial / TCP / USN. At this time, the imported data can be used to control the power supply direction of the PCS / BMS.

According to one disclosure, the virtual device may be mounted on a separate embedded device other than the electrical safety management device 100, and a plurality of virtual devices may control power plants, buildings, servers, and the like.

By one start, the virtual device can communicate with the middleware, and can transmit and receive data and control commands.

According to one disclosure, the middleware may receive at least one virtual device and perform functions such as data storage, energy production, energy consumption prediction, and statistical analysis. For example, the middleware may perform any one of the functions defined in KSF 1800-1.

According to one disclosure, the user interface may provide data for alarms, predictions, statistics, monitoring information, arc-corona detection information, and system abnormalities managed by the middleware to the user. In addition, the user interface may be provided through a web or mobile app, and the form is not limited.

5 is a view for explaining an RF detector for UHF electromagnetic wave measurement according to one disclosure.

According to one disclosure, when the RF signal input through the UFC sensor is filtered by the High Pass Filter (HPF) and the Low Pass Filter (LPF), the RF detector performs a role of modulating by changing a band pass. Can be. For example, the High Pass Filter (HPF) can filter the 0.2, 0.6, and 1.1 GHz bands, and the Low Pass Filter (LPF) can be set to filter the 0.8, 1.5, and 2.0 GHz bands. Setting the filtering band is only one embodiment.

According to one disclosure, the electromagnetic signal amplified and modulated in the RF detector is converted into a digital signal in the A / D converter, and the digital signal output from the A / D converter is divided into a time domain and a frequency domain in a digital signal processor (DSP). It is converted, and it is determined whether insulation deterioration is progressed based on the dense distribution band of the UHF electromagnetic signal distributed in the time domain of the TF-MAP (Time-Frequency MAP) and the UHF electromagnetic signal distributed in the frequency domain, and is far from the dense distribution band. Signals scattered over the place can be processed as noise to increase the accuracy of the analysis.

By one disclosure, the electrical safety management apparatus 100 may detect the arc-corona symptoms by analyzing the electromagnetic waves in real time using an RF decoder, determining whether the electromagnetic wave reception intensity is out of the normal range, Therefore, it is possible to provide an effect of quickly determining whether an abnormality has occurred in the electrical contact.

6 is a flowchart illustrating a method for managing an electrical safety accident in an electrical safety management device according to one disclosure.

According to one disclosure, in block 601, the electrical safety management device 100 may detect electromagnetic signals from a plurality of electrical contacts included in the energy storage system ESS.

According to one disclosure, in block 602, the electrical safety management device 100 is first when the reception strength of the electromagnetic signal detected by any one of the plurality of electrical contacts is within a reference range of 41 to 50 dBuV / m. As the signal level, if it is included in the reference range of 51 to 60 dBuV / m, it is determined as the second signal level, and if it is included in the reference range of 61 to 70 dBuV / m, it is determined as the third signal level, and an electromagnetic wave signal of 71 dBuV / m or higher When is detected, it may be determined as the fourth signal level.

According to one disclosure, in block 603, the electrical safety management apparatus 100 may measure the temperature of the electrical contact where the electromagnetic signal is detected, and determine the rate of temperature rise of the electrical contact.

By one start, the electrical safety management device 100 may vary the time for measuring the rate of temperature rise of the electrical contact according to the temperature of the electrical contact. For example, if the temperature of the electrical contact is detected within the normal temperature of 25 °, it is not determined that a fire has occurred, and the rate of temperature rise can be measured at a predetermined average time. However, if the temperature of the electrical contact is detected at around 80 °, it can be determined that a fire has occurred, and the rate of temperature rise can be determined at shorter intervals to find the cause of the high temperature.

By one start, in block 604, the electrical safety management device 100 is the first temperature level when the temperature rise rate of the electrical contact corresponds to 1 to 5 ° C / s, and the temperature rise rate is 6 to 15 ° C / s. When the second temperature level and the temperature increase rate correspond to 16 to 25, the third temperature level and the temperature increase rate may correspond to the fourth temperature level when the rate corresponds to 26 to 35 ° C / s.

According to one disclosure, in block 605, the electrical safety management apparatus 100 has a first electrical contact with respect to a first electrical contact whose level of the temperature rise rate is lower than or equal to the second level while the level of the reception strength of the electromagnetic wave signal is lower than or equal to the second level. It is possible to generate alarm notification information of the first level to control the cooling system connected to.

By one start, the alarm notification information of the first level is not a fire, but may be notification information generated when a fire is expected.

By one start, the electrical safety management device 100 may lower the temperature of the first electric increasingly, lower the temperature of the preset cooling system to prevent fire, or increase the speed of the fan.

According to one disclosure, in block 606, the electrical safety management device 100 is a second electrical contact with respect to a second electrical contact where the level of the temperature rise rate is the third level while the level of the reception strength of the electromagnetic wave signal is the third level. It is possible to generate second level alert notification information that fires the fire suppressor.

The alarm notification information of the second level by an initiation is an initial stage of fire occurrence, and may be a slight fire level of information that can be suppressed through a fire suppressor.

Fire suppression by one initiation was prepared to extinguish the water-borne fires caused by electrical installations, water 18% by weight, octyl alcohol (1-octanol) 5.8% by weight, lauryl alcohol (Lauryl Alcohol) 3.6 Wt%, methacrylic acid 51 wt%, dicarboxylic acid 2.0 wt%, magnesium dihydroxide [Mg (OH) 2] 2.1 wt%, ammonium lauryl sulfate 2.1 Weight%, hydroxyethylcellulose (Hydroxyethylcellulose) 6.7% by weight, carboxymethyl cellulose (carboxymethyl cellulose) 5.8% by weight and xanthan gum (Keltrol BT) 2.8% by weight In addition, electrical safety management device 100 Is capable of spraying a fire suppressant at a spray rate of 5.3 to 6.5 m / s towards the second electrical contact.

In addition, the fire suppression agent is used for suppressing fires caused by oily objects, 40 to 46% by weight of water, 20 to 24% by weight of ammonium sulfate ((NH4) 2SO4), ammonium monophosphate (NH4H2 PO4) 10 ~ 15 wt%, ethoxylated alkyl amine 6 ~ 8 wt%, aluminum oxide (Aluminiumoxyd) 4-6 wt%, silicon carbide 3 ~ 4.5 wt%, titanium dioxide (TiO2) ) 1 to 2.3% by weight, aluminum sulfate (Al2 (SO4) 3) 1 to 1.5% by weight and trisodium phosphate (Trisodium Phosphate) may contain 0.3 to 1% by weight.

In addition, the fire inhibitor is 42% by weight of water, 23.6% by weight of ammonium sulfate ((NH4) 2SO4), 13.5% by weight of ammonium monophosphate (NH4H2 PO4), 7.8% by weight of ethoxylated alkyl amine , Aluminum oxide (Aluminiumoxyd) 5.5% by weight, silicon carbide 3.8% by weight, titanium dioxide (TiO2) 1.8% by weight, aluminum sulfate (Al2 (SO4) 3) 1.2% by weight and trisodium phosphate (Trisodium Phosphate) may contain 0.8% by weight.

In addition, the fire suppressor is for suppressing water-based fires caused by electrical equipment, 10 to 30% by weight of water, 11 to 15% by weight of Octanol, and 11 to 13% by weight of Dihydrogen oxide , Diethylene glycol 14 ~ 16 wt%, 2- (2-butoxyethoxy) ethanol (diethylene glycol butyl ether) 12 ~ 15 wt%, Propylene glycol 7 ~ 9 wt%, Carbonic acid Potassium carbonate (potassium carbonate) 6 to 8% by weight, ammonium phosphate (ammonium phosphate) 5 to 6.5% by weight and potassium cocoate (Potassium cocoate) may include 3 to 4.2% by weight.

According to one disclosure, in block 607, the electrical safety management apparatus 100 stores an energy storage system (ESS) with respect to a third electrical contact whose level of the temperature increase rate is the fourth level while the level of the reception strength of the electromagnetic wave signal is the third level. ) Is switched to the manual operation mode, and a third level of alarm notification information including a message requesting to stop the operation of the energy storage system (ESS) can be transmitted to the user terminal.

The alarm notification information of the third level by one start may be in a state in which a fire spreads to other electrical contacts after a slight fire occurs. The electrical safety management device 100 may control the operation of the electrical contact where the fire occurred by switching the operation of the energy storage system to the manual mode. In addition, it is possible to request the user to stop the operation for the time to back up and check the information.

By one start, the electrical safety management device 100 automatically generates an alert notification information of the third level, and after a predetermined time has elapsed, if the user does not receive a request to stop the operation of the energy storage system automatically Operation can be stopped.

According to one disclosure, in block 608, the electrical safety management device 100 stores an energy storage system (ESS) for a fourth electrical contact in which the level of the reception strength of the electromagnetic wave signal is the fourth level and the level of the temperature rise rate is the fourth level. ) May generate alarm notification information of the fourth level including a command to automatically stop the operation.

By one start, in block 609, the electrical safety management device 100 transmits the content of the alert notification information to a predetermined external terminal according to the level of the alert notification information, and the energy storage system (ESS) according to the content of the alert notification information. ).

In addition, by one start, the electrical safety management device 100 may periodically measure the temperature of the electrical contact using a temperature sensor installed close to the electrical contact.

At this time, by one start, the electrical safety management device 100 may measure the temperature of the electrical contact in 1 minute increments and determine the rate of temperature rise per minute when the measured temperature is 45 ° or less, and the measured temperature is 45 to 65 In the case of °, the temperature of the electrical contact can be measured in units of 30 seconds and the rate of temperature rise per 30 seconds can be determined.

According to one start, the electrical safety management apparatus 100 may measure the temperature of the electrical contact in units of 10 seconds and determine the rate of temperature increase per 10 seconds when the measured temperature is 65 ° or more.

In addition, by one disclosure, the electrical safety management device 100 emits infrared light toward an electrical contact, and passes a first filter through which infrared rays of the wavelength of 4.59 to 4.85 μm pass, and infrared rays of the wavelength of 3.03 to 3.79 μm. It may include the step of receiving light using a second filter and a third filter to pass infrared rays in the 3.15 ~ 3.29㎛ wavelength band.

According to one disclosure, the electrical safety management apparatus 100 detects infrared rays having a wavelength partially absorbed by the CO ₂ component in the gas generated around the electrical contact point, and detects infrared rays and reference infrared rays obtained by passing through the inert gas. By comparing with the value, the CO ₂ concentration can be calculated, and the calculated CO ₂ concentration can be used to determine whether arc-corona has occurred at the electrical contact.

After the start, the electrical safety management apparatus 100 determines the level of the new alert notification information by re-measuring the intensity and temperature of the electromagnetic signal of the electrical contact in units of 10 seconds after the level of the alert notification information for the electrical contact is determined. Can decide. That is, the electrical safety management device 100 may accurately determine whether the temperature, electromagnetic signal, etc. detected at the electrical contact is due to an error or fire by monitoring the state of the electrical contact in 10 second increments.

The safety management device 100 determines an arc (or corona) generated at an electrical contact included in each power facility using the arc (or corona) generated inside the safety management device 100 and its location. In addition, the safety management device 100 calculates the frequency of an arc (or corona) at each electrical contact, and thereby determines whether each electrical contact is abnormal.

The safety management device 100 is provided with three-dimensional spatial coordinates for electrical contacts installed therein. The safety management device 100 brings the analyzed arc (or corona) and whether or not it occurs, and the occurrence position of the arc (or corona) to correspond to the spatial coordinates of the power facility. Through this, the power facility 11 installed in the arc (or corona) generating position is identified.

The safety management device 100 records that an arc (or corona) has occurred at the identified electrical contact. That is, the occurrence of arc (or corona) for each electrical contact is recorded. That is, the frequency of the arc (or corona) is recorded for each power facility.

By one start, the electrical contacts may partially generate an arc (or corona) under normal conditions. However, frequent arcs (or coronas) indicate abnormal power equipment. Therefore, if the frequency of the arc (or corona) is excessively high compared to a predetermined threshold, it is determined that an abnormality has occurred in the power facilities.

In addition, the frequency threshold of the arc (or corona) for determining whether there is an abnormality may be set differently for each power facility including an electrical contact. In other words, there are power facilities where arc (or corona) is often generated frequently, and there are power facilities where arc (or corona) is dangerous. In the latter case, the arc (or corona) itself can be judged as abnormal.

The safety management device 100 may set the frequency threshold as a correction section, and determine an abnormal state or a deterioration state as a state corresponding to a section to which the set section belongs. For example, the critical section may be divided into three sections, and the section with the highest frequency may be set as a “risk” section, and a section with a medium frequency may be set as a “caution” section. In addition, a section with a low frequency may be set as a “normal” section.

When it is determined that an arc (or corona) is generated at each electrical contact, the safety management device 100 displays an arc (or corona) occurrence state through the display alarm unit 36 or transmits it to an administrator or a remote server.

The safety management device 100 displays data in an arc (or corona) state, such as frequency of occurrence, on a display. That is, the display alarm unit 36 displays the location of the internal facility of the housing 10 and the frequency of the detected arc (or corona) in the facility, or displays the inferred abnormal state or abnormal / deterioration determination result on the screen. do. In particular, it is possible to indicate whether or not there is an abnormality for each facility on the switchboard layout.

When it is determined that there is an abnormality in the electrical contact, the safety management device 100 notifies the abnormal state. In particular, information about the abnormal state and the power facility in the corresponding power facility or the abnormal state is notified together. An alarm is triggered when the state of the real-time detection arc (or corona) is greater than the threshold. Alternatively, when it is determined that the abnormal state (or a section of the abnormal state) is determined by inference of the abnormal state or the deteriorated state, an alarm corresponding to the abnormal state is generated.

The safety management device 100 stores the information collected by the sensors in a database, and an alarm is activated when a real-time measured arc (or corona) frequency is greater than a threshold (reference frequency or reference intensity, etc.). At this time, when an alarm occurs, the location of the alarm should be automatically displayed on the screen and the problem can be found.

The safety management device 100 stores data such as the name, content, and location of each power facility of the safety management device 100, a reference sound signal, an arc (or corona) frequency, and an arc (or corona) occurrence position. In addition, it stores history detection values and the like for comparison with detection values collected in real time.

In addition, when the determined level of the new alert notification information is lower than the previous alert notification information, the electrical safety management apparatus 100 may determine the operation state of the electrical contact as the level of the new alert notification information. For example, after the third level of alert notification information is generated, the electrical safety management device 100 generates the first level of alert notification information of the electrical contact when the first level of alert notification information is generated four times in succession. You can completely decide by level. That is, it is possible to accurately determine the fire by re-determining at least three times rather than immediately determining that the new alarm notification information has been detected once.

According to one disclosure, the electrical safety management device 100 determines that an arc-corona has occurred at the electrical contact when the determined level of the new alert alert information is determined at least once at a level higher than the previous alert alert information, and the serial at the electrical contact is determined. It can generate monitoring information related to arc, parallel arc, ground arc, corona occurrence and temperature changes. That is, when high level alarm notification information is generated at least once, it can be determined that an arc-corona has occurred due to a fire, and new monitoring information can be collected for more accurate determination.

So far, in the present specification, embodiments have been described with reference to the drawings so that those skilled in the art to which the present invention pertains can easily understand and reproduce the present invention. Those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible from the embodiments of the present invention. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Although the embodiments have been described and described above, the present invention is not limited to the specific embodiments described above, and has ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications can be made by a person, and these modifications should not be individually understood from the technical idea or prospect of the present invention.

Claims (5)

Detecting an electromagnetic wave signal from a plurality of electrical contacts included in the energy storage system (ESS);
A first filter that emits infrared light toward the plurality of electrical contacts, and passes the emitted infrared light through an infrared band of 4.59 to 4.85 μm, a second filter that passes infrared light of a 3.03 to 3.79 μm wavelength band, and a 3.15 to 3.29 μm wavelength band Receiving light using a third filter that passes infrared light;
CO ₂ concentration is calculated by detecting infrared rays having a wavelength partially absorbed by CO ₂ components among gases generated around the plurality of electrical contacts, and comparing the detected infrared rays with reference infrared values obtained by passing an inert gas. And determining whether arc-corona is generated at the plurality of electrical contacts by using the calculated CO ₂ concentration;
When the reception strength of the electromagnetic signal detected by any one of the plurality of electrical contacts is within the reference range of 41 to 50 dBuV / m, the first signal level is included in the reference range of 51 to 60 dBuV / m If the second signal level, if it is included within the reference range of 61 ~ 70dBuV / m, the third signal level is determined, and if an electromagnetic wave signal of 71dBuV / m or more is detected, the fourth signal level is determined;
Periodically measuring the temperature of the electrical contact using a temperature sensor installed close to the electrical contact;
If the measured temperature is 45 ° or less, measuring the temperature of the electrical contact in units of 1 minute and determining a rate of temperature increase per minute;
If the measured temperature is 45 to 65 °, measuring the temperature of the electrical contact in units of 30 seconds and determining a rate of temperature increase per 30 seconds;
If the measured temperature is 65 ° or more, measuring the temperature of the electrical contact in units of 10 seconds and determining a rate of temperature increase per 10 seconds;
When the temperature increase rate of the electrical contact corresponds to 1 to 5 ° C / s, the first temperature level, when the temperature increase rate corresponds to 6 to 15 ° C / s, the second temperature level, when the temperature increase rate corresponds to 16 to 25 ° C Determining a fourth temperature level when the third temperature level and the temperature increase rate correspond to 26 to 35 ° C / s;
A first level of alarm notification for controlling a cooling system connected to the first electrical contact with respect to a first electrical contact where the level of the reception strength of the electromagnetic wave signal is less than or equal to the second level and the level of the temperature rise rate is less than or equal to the second level Generating information;
A second level of alarm notification information for firing a fire suppressant to the second electrical contact is provided to a second electrical contact where the level of the temperature rise rate is the third level while the level of the reception strength of the electromagnetic wave signal is the third level. Generating;
Switching the operation of the energy storage system (ESS) to a manual operation mode for a third electrical contact having the third level of the level of the temperature rise rate while the level of the reception strength of the electromagnetic wave signal is the third level, and the user terminal Transmitting an alert notification information of a third level including a message requesting to stop the operation of the energy storage system (ESS);
And a fourth electrical contact having a level of the strength of the received signal of the electromagnetic wave signal as a fourth level and a level of the temperature increase rate as a fourth level, including a command to automatically stop the operation of the energy storage system (ESS). Generating 4 levels of alert notification information; and
Including the step of transmitting the content of the alert notification information to a predetermined external terminal according to the level of the alert notification information, and controlling the operation of the energy storage system (ESS) according to the content of the alert notification information; How to manage electrical safety incidents with arc-corona detection. delete According to claim 1,
The fire inhibitor,
Manufactured to extinguish water-borne fires caused by electrical installations, 18% by weight of water, 5.8% by weight of 1-octanol, 3.6% by weight of lauryl alcohol, methacrylic acid ( methacrylic acid) 51% by weight, dicarboxylic acid 2.0% by weight, magnesium dihydroxide [Mg (OH) 2] 2.1% by weight, ammonium lauryl sulfate 2.1% by weight, hydroxyethylcellulose (Hydroxyethylcellulose) 6.7% by weight, carboxymethyl cellulose (carboxymethyl cellulose) 5.8% by weight and xanthan gum (Keltrol BT) contains 2.8% by weight,
The fire suppressant is characterized in that it is ejected toward the second electrical contact at an injection speed of 5.3 to 6.5 m / s, a method for managing an electrical safety accident through arc-corona detection. delete According to claim 1,
Determining a level of new alert notification information by re-measuring the strength and temperature of the electromagnetic signal of the electrical contact in units of 10 seconds after the level of the alert notification information for the electrical contact is determined;
If the determined level of the new alert notification information is determined three or more times as a level lower than the previous alert notification information, determining an operation state of the electrical contact as a level of the new alert notification information; and
When the determined level of the new alert notification information is determined at least once to a level higher than the previous alert notification information, it is determined that an arc-corona has occurred at the electrical contact and the series arc, parallel arc, ground arc, corona at the electrical contact A method of managing electrical safety incidents through arc-corona detection, comprising generating monitoring information related to occurrence and temperature changes.

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