KR102485149B1 - System and Method for automatically setting operation information of protective equipments - Google Patents

Abstract

Using real-time power system information obtained from power system monitoring and control systems such as IPAS (Intergrated Protection Assistance System), NDIS (New Distribution Information System), and DAS (Distribution Automation System), failures that occur in distribution lines We propose a technology for automatically setting protection device operation information that calculates the current, automatically calculates the operation information of the protection device, and transmits it to each protection device.

Description

System and method for automatically setting operation information of protective equipment {System and Method for automatically setting operation information of protective equipments}

Various embodiments relate to a system and method for automatically setting protection device operation information.

In order to supply electricity to factories, shopping malls, houses, and farmhouses, electricity is supplied through power generation, transmission, transformation, and distribution lines. Currently, KEPCO uses EMS (Energy Management System) for power generation operation system, SCADA (Supervisory Control And Data Acquisition) for transmission and substation operation system, and DAS (Distribution Automation System) and NDIS (New Distribution Information System) for distribution operation system. system is running. At this time, a circuit breaker, a leak closer, a switch, and a cut out switch (COS) are used to cut off and open and close the power of the extra-high voltage distribution line. When a fault occurs on the magnetic load side, the protection device opens itself and separates the healthy section from the fault section to reduce damage caused by the fault. For the smooth operation of protection devices such as circuit breakers and reclosers, the operation of protection devices is set by calculating the maximum and minimum fault currents of the protection section in preparation for a distribution line failure. Currently, protection devices are operated automatically or manually, and in the case of automatic operation, they are remotely controlled and monitored through DAS, while manual ones are controlled on site. In addition, the initial operation information of the protection device is calculated and inputted by the operator using various information according to a calculation formula. In this case, errors in calculation may occur due to an operator's mistake, and thus erroneous information may be set. In addition, when a system change occurs in the distribution line, the operation information of the protection device must be recalculated and set. However, this change information may be omitted, resulting in social loss due to power failure due to malfunction or non-operation of the protection device. .

Conventional setting of protection device operation information has a problem in that a calculation error occurs due to an operator's mistake or a system change of a distribution line is not reflected, causing malfunction of the protection device.

In order to solve these problems, various embodiments of the present invention intend to provide a system and method for automatically setting protection device operation information that automatically calculates and sets protection device operation information by reflecting power system information in real time.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

According to various embodiments of the present invention, an information unit for collecting and providing real-time information of a power system in real time, an operation information setting device for determining operation information of a protection device based on the real-time information of the power system provided from the information unit, It is possible to provide a protection device operation information automatic setting system including a plurality of protection devices that operate according to the operation information determined by the operation information setting device.

In addition, the information unit automatically protects device operation information including a first information unit providing main voltage impedance and primary bus impedance information, a second information unit providing distribution line impedance information, and a third information unit providing distribution line load information. A configuration system can be provided.

In addition, the first information unit includes an IPAS (Intergrated Protection Assistance System), the second information unit includes a NDIAS (new distribution information system), and the third information unit includes a DAS (distributio automation system). A system for automatically setting operation information can be provided.

In addition, the operation information setting device calculates the fault current that occurs when the distribution system fails using the real-time information of the power system provided by the information unit, and the operation information of the protection device using the fault current. It is possible to provide a protection device operation information automatic setting system including an operation information calculation unit that calculates and an operation information transmission unit that transmits the operation information to the plurality of protection devices.

In addition, the fault current calculator calculates a fault current including any one of a fault current when a 1-line ground fault occurs, a fault current when a 2-wire ground fault occurs, a fault current when a 2-phase short circuit occurs, and a fault current when a 3-phase short circuit occurs. A device operation information automatic setting system can be provided.

In addition, the operation information calculation unit may provide an automatic protection device operation information setting system that calculates operation information according to a set period and provides the calculation result to an operator.

In addition, the operation information transmission unit may provide a protection device operation information automatic setting system for transmitting operation information to the plurality of protection devices through a communication method such as LTE or TRS.

In addition, the device for setting operation information may provide an automatic setting system for protection device operation information, which is included in an application program of a distribution automation system.

In addition, in the method for automatically setting the operation information of the protection device by the operation information setting device, the step of acquiring real-time information of the power system in real time, the fault current generated when the distribution system fails using the real-time information of the power system It is possible to provide a protective device operation information automatic setting method comprising the steps of calculating , calculating operation information of the protection device using the fault current, and providing the operation information to a plurality of protection devices.

In addition, the step of acquiring the real-time information of the power system is the voltage transformer impedance, primary bus impedance, distribution line impedance information from IPAS (Intergrated Protection Assistance System), NDIAS (new distribution information system), DAS (distribution automation system), etc. , It is possible to provide a method for automatically setting protection device operation information, including obtaining distribution line load information.

In addition, the step of calculating the fault current is a fault current including any one of a fault current when a 1-line ground fault occurs, a fault current when a 2-wire ground fault occurs, a fault current when a 2-phase short circuit occurs, and a fault current when a 3-phase short circuit occurs. It is possible to provide a method for automatically setting protection device operation information including the step of calculating.

In addition, the calculating of operation information may provide a method of automatically setting operation information of a protective device in which operation information is calculated according to a set period and the calculation result is provided to an operator.

In addition, providing the operation information to a plurality of protection devices can provide a method for automatically setting protection device operation information including transmitting the operation information to the plurality of protection devices through a communication method such as LTE or TRS. there is.

In addition, as a computer readable storage medium, it is possible to provide a computer readable storage medium containing instructions that, when executed by a processor, perform an operation according to any one of the methods of claims 9 to 13.

Even if a system change occurs in the distribution line, it can be reflected in real time to calculate accurate operation information of the protection device.

In addition, it is possible to prevent malfunction of the protective device due to calculation error due to operator's mistake.

In addition, it is possible to automatically set the operation information of the protection device without having a separate device.

In addition, power outages in distribution lines can be prevented and reduced.

In addition, it is possible to improve the image of the company by reducing power outages in distribution lines, prevent customer complaints, and reduce the workload of system operators.

In addition, it is possible to prevent a company's electricity sales loss and a customer's business loss due to the prevention of a power outage in a distribution line.

Effects obtainable in the present disclosure are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the description below. will be.

1 is a diagram illustrating a system for automatically setting protection device operation information proposed by the present invention according to an embodiment.
2 is a flowchart illustrating a method of automatically setting protection device operation information of an operation information setting device according to an embodiment.
3 and 4 are diagrams illustrating screens on which the operation information setting device calculates operation information for each protection device, according to an embodiment.
5 is a diagram illustrating a screen on which an operation information setting device collectively calculates operation information for a plurality of protection devices according to an embodiment.
In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar elements.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings.

Regardless of the reference numerals, the same or similar components are given the same reference numerals, and overlapping descriptions thereof can be omitted.

The suffix 'module' or 'unit' for the components used in the following description is given or used interchangeably in consideration of ease of writing the specification, and does not itself have a meaning or role distinct from each other. In addition, 'module' or 'unit' means software or a hardware component such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), but is not limited to software or hardware. A 'unit' or 'module' may be configured to reside in an addressable storage medium and may be configured to reproduce one or more processors. Thus, as an example, 'unit' or 'module' includes components such as software components, object-oriented software components, class components and task components, processes, functions, properties, may include procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. Functions provided within one component, 'unit' or 'module' may be combined into a smaller number of components and 'units' or 'modules', or may be combined with additional components and 'units' or 'modules'. can be further separated by

Steps of a method or algorithm described in connection with some embodiments of the present invention may be directly embodied in hardware executed by a processor, a software module, or a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of recording medium known in the art. An exemplary recording medium is coupled to the processor, and the processor can read information from and write information to the storage medium. Alternatively, the recording medium may be integral with the processor. The processor and recording medium may reside within an application specific integrated circuit (ASIC). An ASIC may reside within a user terminal.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when a component is referred to as being 'connected' or 'connected' to another component, it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as 'directly connected' or 'directly connected' to another component, it should be understood that no other component exists in the middle.

First, terms used in this specification will be briefly described.

DAS (Distribution Automation System) is a distribution automation system that provides on-site information (status information, current, voltage, failure, etc.) It is a system that can monitor and remotely control the distribution line in real time by providing it to the main unit.

NDIS (New Distribution Information System) is a new distribution information system, and it is a total business system that establishes a database of distribution facilities across the country and performs planning, design, construction, and facility management using a geographic information system (GIS).

IPAS (Intergrated Protection Assistance System) is an integrated system protection support system that monitors and remotely controls power systems such as transmission lines.

Percent impedance is the ratio between the voltage drop inside the transformer and the rated voltage, which occurs when the rated current flows through the windings of the transformer.

D/L is an abbreviation of “distribution line” and means a distribution line.

R/C is an abbreviation of “recloser” and means a recloser included in protective equipment.

S/S stands for “Sub station” and means a substation.

OCR stands for “over current relay” and means an overcurrent relay.

OCGR stands for “over current ground relay” and means a ground overcurrent relay.

1 is a diagram illustrating a system for automatically setting protection device operation information proposed by the present invention according to an embodiment. The protection device operation information automatically setting system may include an information unit 100 , an operation information setting device 200 and a plurality of protection devices 300 .

The information unit 100 may collect power system information and provide it to the operation information setting device 200 . The information unit 100 includes a first information unit 110 that provides information on main voltage transformer impedance and primary bus impedance, a second information unit 120 that provides distribution line impedance information, and a third information unit 130 that provides distribution line load information. ) may be included. The first information unit 110 may be an Integrated Protection Assistance System (IPAS), the second information unit 120 may be a New Distribution Information System (NDIS), and the third information unit 130 may be a DAS ( Distribution Automation System, Distribution Intelligent System). The information unit 100 may reflect information of a power system that changes in real time and provide the operation information setting device 200 with the reflected information. Accordingly, even if a system change in the distribution line occurs, it is possible to accurately calculate the operation information of the protection device by reflecting it.

The operation information setting device 200 may include a fault current calculation unit 210 , an operation information calculation unit 220 and an operation information transmission unit 230 .

The fault current calculation unit 210 uses the information such as power source impedance, main voltage transformer impedance, and distribution line impedance obtained from the first information unit 110, the second information unit 120, and the third information unit 130 to determine the distribution system's The fault current that occurs when a fault occurs can be calculated. The fault current calculation unit 210 calculates a fault current including any one of a fault current when a 1-line ground fault occurs, a fault current when a 2-wire ground fault occurs, a fault current when a 2-phase short circuit occurs, and a fault current when a 3-phase short circuit occurs. can A single-line ground fault is a fault in which one of the three phases is grounded, and a two-wire ground fault is a fault in which two of the three phases are simultaneously grounded. A two-phase short-circuit fault is a fault in which two of the three phases are short-circuited, and a three-phase short-circuit fault is a fault in which all three phases are short-circuited.

According to an embodiment, the calculation formula of the three-phase short circuit current may be defined as Equation 1.

)는 기준전류와 고장회로의 정상 % 임피던스 (

)에 의하여 결정된다. 여기서 기준전류는,

이며, V는 선간전압인 22.9kV을 의미한다. 고장회로의 정상 % 임피던스는 100[MVA] 기준이며,

=

+

+

로 정의된다.According to Equation 1, the three-phase short circuit current (

) is the reference current and the normal % impedance of the fault circuit (

) is determined by Here, the reference current is

, and V means the line-to-line voltage of 22.9 kV. The normal % impedance of the fault circuit is based on 100 [MVA],

=

+

+

is defined as

은 1차측 모선 정상 %임피던스(100[MVA] 기준)이고,

은 주변압기 정상 %임피던스(100[MVA] 기준)이다. 따라서

+

는 계통 정상 % 임피던스(100[MVA] 기준)이고, 이는 2차측 모선 임피던스라고도 하며 송변전부서에서 제공하는 계통 임피던스는 1차측 모선임피던스와 주변압기 임피던스를 합한 값을 의미한다.

는 배전선로의 정상 %임피던스(100[MVA] 기준)를 나타낸다.

is the normal % impedance of the primary bus bar (based on 100 [MVA]),

is the normal % impedance of the main voltage (based on 100 [MVA]). thus

+

is the system normal % impedance (based on 100 [MVA]), which is also called the secondary side bus impedance, and the system impedance provided by the transmission and substation department means the sum of the primary side bus impedance and main transformer impedance.

represents the normal % impedance (based on 100 [MVA]) of the distribution line.

According to one embodiment, the 1-line ground fault current calculation formula may be defined as Equation 2.

=

)는 기준전류와 고장회로의 정상 % 임피던스 (

)에 의하여 결정된다. According to Equation 2, the 1-wire ground fault current (

) is the reference current and the normal % impedance of the fault circuit (

) is determined by

=

+

+

이고,

=

,

=

+

+

이다.here,

=

+

+

ego,

=

,

=

+

+

to be.

은 1차측 모선 정상 %임피던스(100[MVA] 기준)이고,

은 1차측 모선 영상 %임피던스(100[MVA] 기준)이고,

은 주변압기의 정상 %임피던스(100[MVA] 기준)이고,

은 주변압기의 영상 %임피던스(100[MVA] 기준)이고,

은 배전선로의 정상 %임피던스(100[MVA] 기준)이고,

은 배전선로의 영상 %임피던스(100[MVA] 기준)이다. 따라서

+

는 계통 영상 %임피던스(100[MVA] 기준)이고, 이는 2차측 모선 임피던스라고도 하며 송변전부서에서 제공하는 계통 임피던스는 1차측 모선 임피던스와 주변압기 임피던스를 합한 값을 의미한다.

is the normal % impedance of the primary bus bar (based on 100 [MVA]),

is the primary-side busbar image % impedance (based on 100 [MVA]),

is the normal % impedance of the main voltage (based on 100 [MVA]),

is the zero-phase impedance of the peripheral voltage (based on 100 [MVA]),

is the normal % impedance of the distribution line (based on 100 [MVA]),

is the % impedance of the distribution line (based on 100 [MVA]). thus

+

is the % impedance of the system image (based on 100 [MVA]), which is also called the secondary side bus impedance, and the system impedance provided by the transmission and substation department means the sum of the primary side bus impedance and the transformer impedance.

는 고장점 고장저항치로서 100[MVA] 기준으로 환산한 %임피던스로,

is the failure point failure resistance value, which is the % impedance converted to 100 [MVA] standard,

로 정의된다. 따라서 고장저항이 0Ω일 경우에는

이 되고, 고장저항이 30Ω일 경우에는

이 된다.

is defined as Therefore, when the fault resistance is 0Ω,

, and when the fault resistance is 30Ω,

becomes

The operation information calculator 220 may calculate operation information of the protection device using the value calculated by the fault current calculator 210 .

The motion information calculation unit 220 may calculate motion information item values according to the calculation formula in Table 1.

Operation information item formula multiple of X (Maximum load current × 10) ÷ (Minimum operating current) or more Minimum standard value maximum fault current Phase: Maximum 3-phase short-circuit current of R/C installation point
Ground: 1-wire ground fault current at the R/C installation point (based on 0Ω) minimum fault current Phase: minimum 2-phase short-circuit current of R/C protection section
Ground: minimum 1 wire ground fault current of R/C CB protection section (based on 30Ω) maximum load current Section kVA after R/C installation point) ÷ (D/L total kVA) × (D/L maximum load current) Max Rating Phase: D/L OCR minimum operating current
Ground: The smaller of [(R/C protection section minimum 1-wire ground fault current) × 0.5] and D/L OCGR minimum operating current Minimum Rating Phase: (R/C installation point maximum load current) × 2.8
Ground : (R/C installation point maximum load current) ÷ 3 Instantaneous operating time Phase: Instantaneous operation time of R/C phase at maximum 3-phase short-circuit current at R/C installation point
Ground: Ground instantaneous operating time of R/C in case of minimum 1 line ground fault current in R/C protection section delay operation time Phase: Phase delay operation time of R/C in case of maximum 3-phase short-circuit current at R/C installation point
Ground: Ground delay operation time of R/C when at least 1 line ground fault current in R/C protection section Pick-up device operation time Phase: Delay operation time of D/L OCR at maximum 3-phase short-circuit current at the R/C installation point
Ground: Time limit operation time of D/L OCGR at minimum 1 line ground fault current in R/C protection section cooperation time Minimum time difference that can be coordinated between D/L OCR and R/C Phase (10 Hz) remaining time D/L OCR total operation time - R/C total operation time

The operation information may include an operation current output using the values calculated in Table 1, a PU multiple, an instantaneous and delayed T-C curve, and the number of operations. According to an embodiment, the operation information calculation unit 220 distinguishes a phase and a ground, and operates current according to maximum rating and minimum rating value, PU multiple according to X multiple value, instantaneous operation time, and delay. Optimum protection device operation information can be calculated by reviewing operation information including operation time, backup device operation time, T-C curve according to cooperation time, backup device operation time, cooperation time, and number of operations according to remaining time. . The motion information calculation unit 220 may periodically calculate motion information by setting a predetermined period. The operation information calculation unit 220 may provide the calculation result to the operator through a screen. Accordingly, it is possible to prevent a malfunction of the protective device due to an error in calculation due to an operator's mistake.

The operation information transmission unit 230 may transmit the operation information calculated by the operation information calculation unit 220 to each of the plurality of protection devices 300 . According to an embodiment, the operation information transmitter 230 may transmit operation information through a communication method such as Long-Term Evolution (LTE) or Trunked Radio System (TRS).

The operation information setting device 200 may be included in an application program of a distribution automation system. According to an embodiment, the operation information setting device 200 may be included in a distribution automation system (DAS). Accordingly, it is possible to automatically set the operation information of the protection device without having a separate device.

The plurality of protective devices 300 may be devices used to cut off and open/close power of extra-high voltage distribution lines in a power system, such as circuit breakers and reclosers. The plurality of protection devices 300 are opened by themselves when a failure occurs on the magnetic load side, and serve to reduce damage due to failure by separating a healthy section from a failure section. The plurality of protection devices 300 may operate according to the operation information obtained from the operation information transmission unit 230 .

2 is a flowchart illustrating a method of automatically setting protection device operation information of an operation information setting device 200 according to an embodiment.

The operation information setting device 200 may obtain real-time information of the power system from the information unit 100 (S100). The operation information setting device 200 obtains primary side bus line normal, video % impedance information, main transformer normal, and video % impedance information from the first information unit 110, and obtains distribution line normal, video % information from the second information unit 120. Impedance information may be obtained, and maximum load information of the distribution line may be obtained from the third information unit 130 .

Operation information setting device 200 may calculate the fault current using the information obtained in operation S100 (S200). The operation information setting device 200 can calculate a fault current including any one of a fault current when a 1-line ground fault occurs, a fault current when a 2-wire ground fault occurs, a fault current when a 2-phase short circuit occurs, and a fault current when a 3-phase short circuit occurs. can According to an embodiment, the calculation formula of the three-phase short circuit current may be defined as Equation 1, and the one-line ground fault current calculation formula may be defined as Equation 2.

The operation information setting device 200 may calculate operation information using the fault current value calculated in operation S200 (S300). The motion information setting device 200 may calculate motion information item values according to the calculation formula of Table 1. The operation information may include an operation current output using the values calculated in Table 1, a PU multiple, an instantaneous and delayed T-C curve, and the number of operations. According to an embodiment, the operation information calculation unit 220 distinguishes a phase and a ground, and operates current according to maximum rating and minimum rating value, PU multiple according to X multiple value, instantaneous operation time, and delay. Optimum protection device operation information can be calculated by reviewing operation information including operation time, backup device operation time, T-C curve according to cooperation time, backup device operation time, cooperation time, and number of operations according to remaining time. .

The operation information setting device 200 may periodically calculate operation information by setting a predetermined period. The operation information setting device 200 may provide the calculation result to the operator through a screen.

The operation information setting device 200 may transmit the operation information calculated in operation S300 to each of the plurality of protection devices 300 (S400). According to an embodiment, the operation information setting device 200 may transmit operation information through a communication method such as LTE or TRS.

Based on the above-described method, the operation information setting device 200 may accurately calculate operation information of the protection device by reflecting it even when a system change occurs in the distribution line.

Operations S100 to S400 are performed by instructions, and the instructions may be stored in a computer readable storage medium that is executed by a processor.

3 and 4 are diagrams illustrating screens on which the operation information setting device 200 calculates operation information for each protection device, according to an embodiment.

In an embodiment according to FIG. 3 , when a desired protection device is selected within the application program of the distribution automation system and “operation information calculation” is executed, the operation information setting device 200 performs operations S100 to S300 of the corresponding protection device. Operation information can be calculated. After the operation information setting device 200 completes the operation of calculating the operation information of the protection device, the calculation result may be provided to the operator through a screen as shown in FIG. 4 . According to FIG. 4, the operation information for substation A, M.TR (Main Transformer) a#2, and D/L (Distribution line) Industrial No. 50 R/A selected by the user was calculated, and as a result, the operation current A is Phase 320, ground 50, PU multiplier is 4 for both phase and ground, instantaneous T-C curve is N1 for both phase and ground, delay T-C curve is N3 for both phase and ground, and the number of operations is 2F1D for both phase and ground. The operation information setting device 200 may transmit the operation information value as described above to substation A, M.TR (Main Transformer) a# 2, and D/L (Distribution line) Industrial No. 50 R/A according to S400.

5 is a diagram showing a screen in which the motion information setting device 200 calculates motion information for a plurality of protective devices collectively according to an embodiment.

The operation information setting device 200 may collectively calculate the operation information of a plurality of protection devices according to operations S100 to S300, and after completing the operation, the calculation result may be provided to the operator through a screen as shown in FIG. 5. The operation information setting device 200 may transmit the operation information values calculated for the protection devices A to E to A to E respectively according to S400.

100: Ministry of Information
110: 1st Intelligence Division
120: Second Intelligence Division
130: 3rd Intelligence Division
200: operation information setting device
210: fault current calculation unit
220: operation information calculation unit
230: operation information transmission unit
300: protective device

Claims (14)

an information unit that collects real-time information of the power system and provides it in real time;
an operation information setting device for determining operation information of a protection device based on the real-time information of the power system provided from the information unit; and
Includes a plurality of protection devices that operate according to the operation information determined by the operation information setting device;
The operation information setting device,
a fault current calculation unit that calculates a fault current generated when a distribution system fails by using the real-time information of the power system provided by the information unit;
an operation information calculation unit that calculates operation information of the protection device using the fault current; and
And an operation information transmission unit for transmitting the operation information to the plurality of protection devices,
The operation information calculation unit divides the phase and ground of the protection device, and the operation current according to the maximum rating and minimum rating value, the PU multiple according to the X multiple value, the instantaneous TC curve, the delay TC curve and operating information according to the remaining time according to a set cycle and providing the calculated result to an operator.
According to claim 1,
the information department
a first information unit providing main voltage impedance and primary bus impedance information;
a second information unit providing distribution line impedance information; and
A third information unit providing distribution line load information;
Protection device operation information automatic setting system.
According to claim 2,
The first information unit includes an Integrated Protection Assistance System (IPAS),
The second information unit includes a new distribution information system (NDIAS),
The third information unit includes a DAS (distribution automation system)
Protection device operation information automatic setting system.
delete According to claim 1,
The fault current calculator
Fault current including fault current in case of 1-line ground fault, fault current in case of 2-wire ground fault, fault current in case of 2-phase short circuit, and fault current in case of 3-phase short-circuit
Protection device operation information automatic setting system.
delete According to claim 1,
The operation information transmission unit transmits operation information to the plurality of protection devices by a communication method such as LTE or TRS.
Protection device operation information automatic setting system.
According to claim 1,
The operation information setting device is included in the application program of the distribution automation system,
Protection device operation information automatic setting system.
In the method for the operation information setting device to automatically set the operation information of the protection device,
Acquiring real-time information of the power system in real time;
Calculating a fault current generated when a distribution system fails using real-time information of the power system;
Calculating operation information of the protection device using the fault current; and
Transmitting the operation information to a plurality of protection devices,
The step of calculating the operation information,
By dividing the phase and ground of the protection device, the operation current according to the maximum rating and minimum rating value, the PU multiple according to the X multiple value, the instantaneous TC curve, the delay TC curve, and the number of operations according to the remaining time Calculating operation information including a according to a set cycle, and providing the calculated result to an operator.
How to automatically set protection device operation information.
According to claim 9,
Acquiring real-time information of the power system
Acquiring ambient voltage impedance, primary bus impedance, distribution line impedance information, and distribution line load information from IPAS (Intergrated Protection Assistance System), NDIAS (new distribution information system), DAS (distribution automation system), etc.
How to automatically set protection device operation information.
According to claim 9,
The step of calculating the fault current is
Calculating a fault current including any one of a fault current when a 1-wire ground fault occurs, a fault current when a 2-wire ground fault occurs, a fault current when a 2-phase short circuit occurs, and a fault current when a 3-phase short circuit occurs
How to automatically set protection device operation information.
delete According to claim 9,
The step of providing the operation information to a plurality of protection devices
Transmitting the operation information to the plurality of protection devices by a communication method such as LTE or TRS
How to automatically set protection device operation information.
As a computer readable storage medium,
When executed by a processor, including instructions for performing an operation according to any one of the methods of claims 9 to 11 and 13,
A computer readable storage medium.

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