KR102242985B1 - The Negative-phase Relay method and Negative-phase Relay - Google Patents

The Negative-phase Relay method and Negative-phase Relay Download PDF

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KR102242985B1
KR102242985B1 KR1020200137585A KR20200137585A KR102242985B1 KR 102242985 B1 KR102242985 B1 KR 102242985B1 KR 1020200137585 A KR1020200137585 A KR 1020200137585A KR 20200137585 A KR20200137585 A KR 20200137585A KR 102242985 B1 KR102242985 B1 KR 102242985B1
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phase
relay
mcu
normal
electrically connected
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KR1020200137585A
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Korean (ko)
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조병택
강덕하
채희명
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(주)케이.브이.에이
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The present invention provides a reverse-phase relay method in which internal and external noise and disturbance are prevented, which comprises: a starting step in which power is applied to three phases (R phase, S phase, T phase) electrically connected to a microcontroller (MCU) and a circuit; an initialization step in which the MCU performs function initialization; a three-phase conversion step of converting the signal detected by a three-phase detection unit so that the MCU is recognized; a determination step in which the MCU determines whether it is normal or abnormal (reverse phase, phase loss) based on the detected signal; a maintenance step of, after the determination step, when normal, indicating that it is normal on the LED display, and preventing the internal and external noise and the disturbance by turning off the relay (B contact maintenance) and the reverse phase relay; and a standby step of switching the MCU to a standby state by keeping the relay (contact A conversion) and the power switch to be turned on. After the determination step, a reset step of reconnecting after separation of the three phases (R phase, S phase, T phase) is further added.

Description

내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기.{The Negative-phase Relay method and Negative-phase Relay}The Negative-phase Relay method and Negative-phase Relay to prevent internal and external noise and disturbance. {The Negative-phase Relay method and Negative-phase Relay}

본 발명은 내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기에 관한 것으로 더욱 상세하게는 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기에 관한 것이다.The present invention relates to a reverse phase relay method and a reverse phase relay in which internal and external noise and disturbance are prevented, and more particularly, it is determined that it is normal or abnormal (reverse phase, phase loss) according to a three-phase detection signal, and when it is normal, the LED display is normal. Display and turn off the relay (holding B contact) and power switch to prevent the malfunction of the MCU because it is not affected by internal and external noise and disturbances that are originally introduced through the power and signal lines, and when abnormal, the LED display is abnormal (reverse phase). , Phase loss), and the relay (A contact conversion) and power switch to be turned ON to convert the MCU to the standby state, internal and external noise and disturbance is prevented, the reverse phase relay method and reverse phase relay.

일반적으로 역상계전기는 3상이 연결되어 상(相) 회전 방향의 역전으로 인한 전동기의 역전을 막고 또는 1상의 단선에 대하여 전동기의 과열을 예방하기 위한 보호용 계전기이다.In general, a reverse phase relay is a protective relay to prevent reversing of the motor due to reversal of the phase rotation direction by connecting three phases or to prevent overheating of the motor in case of disconnection of one phase.

이러한, 역상계전기는 3개의 상이 순서대로 연결된 경우 (R, S, T) 정상으로 모터가 회전되며, 3개의 상이 역순으로 연결된 경우 (R, T, S) 역상으로 모터가 역회전을 하고, 3개의 상 중 1개가 연결되지 않은 경우 (R, T or R, S or S, T)결상으로 모터가 과열되는 구조를 갖는다.In this case, when three phases are connected in order (R, S, T), the motor rotates normally, and when three phases are connected in reverse order (R, T, S), the motor rotates in reverse, and 3 If one of the two phases is not connected (R, T or R, S or S, T), the motor overheats due to phase loss.

한편, 통상의 역상계전기는 실행상태에서 내,외부노이즈 및 외란의 영향을 받아 오동작을 일으켜 많은 연구가 필요하다.On the other hand, a normal reverse phase relay causes a malfunction under the influence of internal and external noise and disturbance in the running state, and thus a lot of research is required.

예컨대, 한국 공개특허공보 제10-2008-0035540호에는 전기적 신호를 입력받아 마이크로 프로세서가 처리할 수 있고 디지털 값으로 변환 시키는 변환기(ADC)를 거처 처리된 출력 값을 가지고 R,S,T의 3상중 가장 큰 값을 찾아 R상이 최대인 경우 0을 출력하고, S상이 최대인 경우에는 ＋1을 출력하고 T상이 최대인 경우 -1을 출력하는 1차 비교기(10)를 거치도록 하고, 상기 1차 비교기(10)의 출력신호는 1차 적분기(20)를 통해 양의 삼각파 또는 음의 삼각파를 출력토록 한 다음 다시 2차 적분기(30)를 통해 양의 누적 곡선또는 음의 누적 곡선 값을 출력토록 하여 2차 비교기(40)로 하여금 0과 같거나 크면 정상, 0보다 작으면 역상으로 판정토록 하는 방법에 의한 역상 보호 계전기를 제공함으로서 판별의 안정성과 가변 주파수의 환경 하에서도적용이 가능하고 구현의 편리성을 얻을 수가 있는 2중 적분에 의한 역상검출 알고리즘 및 역상보호계전기가 공개되어 있다.For example, Korean Patent Laid-Open Publication No. 10-2008-0035540 has an output value processed through a converter (ADC) that receives electrical signals and processes them by a microprocessor and converts them to digital values. Find the largest value among the phases, output 0 when the R phase is the maximum, output +1 when the S phase is the maximum, and pass through a primary comparator 10 that outputs -1 when the T phase is the maximum. The output signal of the comparator 10 outputs a positive or negative triangle wave through the first integrator 20 and then outputs a positive or negative accumulated curve value through the second integrator 30 again. Therefore, it is possible to apply the secondary comparator 40 in the environment of discrimination stability and variable frequency by providing a reverse-phase protection relay by a method that makes the secondary comparator 40 judge as normal if it is equal to or greater than 0, and as reverse phase if it is less than 0. A reverse phase detection algorithm and a reverse phase protection relay by double integration that can obtain convenience have been disclosed.

그러나, 상기의 기술은 역상검출 신속도만 높을뿐, 역상계전기의 근본적인 내,외부노이즈 및 외란을 방지하지 못하는 문제가 있다.However, the above technology has a problem in that the reverse phase detection speed is only high, and the fundamental internal and external noise and disturbance of the reverse phase relay cannot be prevented.

한국 공개특허공보 제10-2008-0035540호, '2중 적분에 의한 역상검출 알고리즘 및 역상보호계전기'Korean Patent Laid-Open Publication No. 10-2008-0035540,'Reverse phase detection algorithm and reverse phase protection relay by double integration'

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기를 제공하는 데 있다.The present invention is to solve such a problem, and when it is normal, it is determined that it is normal or abnormal (reverse phase, phase loss) according to the three-phase detection signal, and when it is normal, the LED display unit is indicated that it is normal, and the relay (holding the B contact) and the power switch are turned off. Therefore, it prevents the malfunction of the MCU because it is not affected by internal and external noise and disturbances that are originally introduced through the power and signal lines, and when abnormal, the LED display indicates abnormal (reverse phase, phase loss) and relays (A contact conversion) and It is to provide a reverse phase relay method and a reverse phase relay that prevent internal and external noise and disturbances that converts the MCU to the standby state by keeping the power switch ON.

상기 목적을 달성하기 위한 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전방법은 MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상) 에 전원이 인가되는 시작단계; 상기 시작단계후, 전원을 감지한 MCU가 기능초기화를 진행하는 초기화단계; 상기 초기화단계후, 3상검출부를 통해 검출된 신호를 MCU가 인식되도록 변환하는 3상변환단계; 상기 3상변환단계후, MCU가 검출된 신호를 토대로 정상 또는 비정상(역상,결상)을 판단하는 판정단계; 및 상기 판정단계후, 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 역상계전기 OFF하여 내,외부노이즈 및 외란이 방지되는 유지단계; 상기 판정단계후, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 대기단계;를 포함하여 구성되며, 상기 판정단계후, 3상(R상,S상,T상) 분리후, 재연결하는 리셋단계가 더 추가되는 것이 바람직하다.In the reverse phase relay method of the present invention that prevents internal and external noise and disturbance to achieve the above object, power is applied to the MCU (microcontroller) and the three phases (R phase, S phase, T phase) electrically connected to the circuit. The starting stage of being; After the starting step, an initialization step in which the MCU, which has detected power, performs a function initialization; After the initialization step, a three-phase conversion step of converting the signal detected through the three-phase detection unit so that the MCU is recognized; After the three-phase conversion step, a determination step of determining a normal or abnormal (reverse phase, phase loss) based on the detected signal by the MCU; And a maintenance step in which internal and external noise and disturbance are prevented by indicating that the LED display is normal after the determination step and turning off the relay (maintaining the B contact) and the reverse phase relay. And a standby step of switching the MCU to a standby state by displaying abnormal (reverse phase, phase loss) on the LED display unit and maintaining the relay (A contact conversion) and power switch ON when abnormal, after the determination step, and the After the determination step, after the separation of the three phases (R-phase, S-phase, T-phase), it is preferable that a reset step of reconnecting is further added.

본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전기는 AC8V 및 AC110V를 생성하도록 한 변압기; 상기 변압기와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC110V를 A접점으로 변환하거나 B접점이 유지되도록 한 릴레이; 상기 변압기와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC8V를 DC5V로 변압하도록 한 LDO(LOW-DROPOUT); 상기 LDO와 전기적으로 연결되게 설치되어 LDO로부터 변압된 전류를 MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상)에 공급하도록 한 파워스위치; 상기 3상(R상,S상,T상)과 전기적으로 연결되게 설치되어 3상(R상,S상,T상)의 신호를 MCU(마이크로 컨트롤러)가 인식되게 변환하도록 한 3상검출부; 상기 3상검출부와 전기적으로 연결되게 설치되어 검출된 신호를 토대로 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 내,외부노이즈 및 외란을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 대기상태로 전환하여 릴레이를 제어하도록 한 MCU(마이크로 컨트롤러); 및 상기 MCU(마이크로 컨트롤러)와 전기적으로 연결되게 설치되어 MCU(마이크로 컨트롤러)의 지시에따라 정상,비정상(역상,결상)을 표시하도록 한 LED표시부를 포함하여 구성된다.Inverse phase relay to prevent internal and external noise and disturbance of the present invention is a transformer to generate AC8V and AC110V; A relay installed to be electrically connected to the transformer to convert AC110V generated from the transformer into an A contact or to maintain a B contact; An LDO (LOW-DROPOUT) installed to be electrically connected to the transformer to convert AC8V generated from the transformer into DC5V; A power switch installed to be electrically connected to the LDO to supply the transformed current from the LDO to the MCU (microcontroller) and the three phases (R phase, S phase, T phase) electrically connected to the circuit; A three-phase detection unit installed to be electrically connected to the three-phase (R-phase, S-phase, T-phase) to convert a three-phase (R-phase, S-phase, T-phase) signal to be recognized by a microcontroller (MCU); It is installed to be electrically connected to the three-phase detection unit and judges that it is normal or abnormal (reverse phase, phase loss) based on the detected signal, and when it is normal, indicates that it is normal on the LED display, and turns off the relay (maintaining contact B) and the power switch. ,External noise and disturbance are prevented, and when abnormal, the LED display indicates abnormal (reverse phase, phase loss), and the relay (A contact conversion) and power switch are turned ON to switch to the standby state to control the relay. controller); And an LED display unit installed to be electrically connected to the MCU (microcontroller) to display normal and abnormal (reverse phase, phase loss) according to the instruction of the MCU (microcontroller).

상기의 역상계전기는 MOV(Motor Operated Valve Actuator)와 전기적으로 연결되게 설치되는 것이 바람직하다.The reverse phase relay is preferably installed to be electrically connected to a MOV (Motor Operated Valve Actuator).

상기 해결수단에 의한, 본 발명은 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하여 내,외부노이즈 및 외란이 방지되는 효과가 있다.According to the above solution, the present invention determines that it is normal or abnormal (reverse phase, phase loss) according to the three-phase detection signal, indicates that it is normal on the LED display unit, and turns off the relay (maintaining contact B) and the power switch. Prevents malfunction of MCU because it is not affected by internal and external noise and disturbances flowing through the power supply and signal lines. In case of abnormality, LED display indicates abnormal (reverse phase, phase loss) and relay (A contact conversion) and power switch ON It has the effect of preventing internal and external noise and disturbance by switching the MCU to the standby state by maintaining it.

도 1은 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전방법의 흐름도.
도 2는 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전기의 블럭도.1 is a flow chart of a reverse phase relay method in which internal and external noise and disturbance are prevented according to the present invention.
2 is a block diagram of a reverse phase relay in which internal and external noise and disturbances are prevented according to the present invention.

본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기는 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 내,외부노이즈 및 외란이 방지되게 구성하였다.The reverse phase relay method and the reverse phase relay that prevent internal and external noise and disturbance of the present invention determine that it is normal or abnormal (reverse phase, phase loss) according to the three-phase detection signal, and when it is normal, indicate that it is normal on the LED display and relay (B contact Maintenance) and power switch OFF to prevent the malfunction of MCU because it is not affected by internal and external noise and disturbances that are originally introduced through the power and signal lines.In case of abnormality, the LED display indicates abnormal (reverse phase, phase loss). It is configured to prevent internal and external noise and disturbance that converts the MCU to standby by maintaining the relay (A contact conversion) and power switch ON.

본 출원에서, ~포함하다~ 또는 ~이루어진다~ 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.In the present application, terms such as ~comprise~ or ~consist~ are intended to designate the existence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of the presence or addition.

다르게 정의되지 않는 한, 기술적이거나 과학적인 용어를 포함해서 여기서 사용되는 모든 용어들은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 일반적으로 이해되는 것과 동일한 의미를 가지고 있다.Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

일반적으로 사용되는 사전에 정의되어 있는 것과 같은 용어들은 관련 기술의 문맥 상 가지는 의미와 일치하는 의미를 가지는 것으로 해석되어야 하며, 본 출원에서 명백하게 정의하지 않는 한, 이상적이거나 과도하게 형식적인 의미로 해석되지 않는다.Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전방법의 흐름도, 도 2는 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전기의 블럭도를 나타낸 도면이다.1 is a flowchart of a reverse phase relay method in which internal and external noise and disturbance are prevented according to the present invention, and FIG. 2 is a block diagram showing a block diagram of a reverse phase relay in which internal and external noise and disturbance are prevented according to the present invention.

도 1에 나타낸 바와 같이, 본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전방법은 시작단계(S10), 초기화단계(S20), 3상변환단계(S30), 판정단계(S40), 유지단계(S50), 대기단계(S60)를 포함하여 구성된다.As shown in Fig. 1, the reverse phase relay method in which internal and external noise and disturbances of the present invention are prevented is a starting step (S10), an initialization step (S20), a three-phase conversion step (S30), a determination step (S40), and maintenance. It consists of a step (S50), including a standby step (S60).

상기 시작단계(S10)은 MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상) 에 전원이 인가되는 단계이다.The starting step (S10) is a step in which power is applied to the three phases (R phase, S phase, T phase) electrically connected to the MCU (microcontroller) and the circuit.

즉, 시작단계(S10)는 변압기에서 AC8V 및 AC110V를 생성후, AC8V는 LDO(전원회로)를 통해 DC5V로 변압되어 파워스위치를 통해 MCU(마이크로 컨트롤러) 및 회로에 전원이 인가되는 단계이다.That is, in the starting step (S10), after generating AC8V and AC110V in a transformer, AC8V is transformed to DC5V through an LDO (power circuit), and power is applied to the MCU (microcontroller) and circuit through the power switch.

상기 초기화단계(S20)는 시작단계후, 전원을 감지한 MCU가 올바른 상(R, S, T)의 점검을 위해 기능초기화를 진행하는 단계이다.The initialization step (S20) is a step in which, after the start step, the MCU, which has detected the power, performs a function initialization to check the correct phases (R, S, T).

상기 3상변환단계(S30)은 초기화단계후, 3상검출부를 통해 검출된 신호를 MCU가 인식되도록 변환하는 단계이다.The three-phase conversion step (S30) is a step of converting the signal detected through the three-phase detector so that the MCU is recognized after the initializing step.

이때, 3상검출부는 MCU와 전기적으로 연결되게 설치되어 3상검출부에 입력된 3상의 정보가 MCU에 입력되는 것이 바람직하다.At this time, it is preferable that the three-phase detection unit is installed to be electrically connected to the MCU so that the three-phase information input to the three-phase detection unit is input to the MCU.

상기 판정단계(S40)는 3상변환단계후, MCU가 검출된 3상검출부로부터 전달받은 상의 신호를 토대로 정상 또는 비정상(역상,결상)을 판단하는 단계이다.The determination step (S40) is a step in which the MCU determines normal or abnormal (reverse phase, phase loss) based on the phase signal transmitted from the detected three phase detection unit after the three phase conversion step.

상기 유지단계(S50)는 판정단계후, 정상시, MCU의 제어에 의해 LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 역상계전기 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란이 방지되는 단계이다.In the maintenance step (S50), after the determination step, when it is normal, it is indicated that it is normal on the LED display by the control of the MCU, and the relay (maintaining the B contact) and the reverse phase relay are turned off. And disturbance is prevented.

즉, 정상시, MCU는 릴레이를 제어하지 않아 B접점을 유지시켜 외부장치와 연결상태로 두며 역상계전기 전력을 OFF하여 내,외부노이즈 및 외란이 전원과 신호선을 통해 유입되는 것을 막아 MCU의 오동작을 방지하는 구조이다.In other words, when normal, the MCU does not control the relay and maintains the B contact to keep it connected to the external device, and turns off the reverse phase relay power to prevent internal and external noise and disturbances from flowing through the power and signal lines, thereby preventing the malfunction of the MCU. It is a structure to prevent.

상기 대기단계(S60)는 판정단계후, 비정상시, MCU의 제어에 의해 LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 단계이다.In the standby step (S60), after the determination step, when abnormal, the LED display unit displays abnormality (reverse phase, phase loss) by the control of the MCU, and switches the MCU to the standby state by maintaining the relay (contact A conversion) and power switch ON. It is a step to do.

즉, 비정상시, MCU는 릴레이를 A접점으로 변환하여 외부장치와 연결을 끊고 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 구조이다.In other words, when abnormal, the MCU converts the relay to contact A, disconnects the external device, and maintains the power switch to switch the MCU to the standby state.

한편, 판정단계후, 지속적으로 비정상시, 3상(R상,S상,T상) 분리후, 재연결하는 리셋단계(S70)가 더 추가되는 것이 바람직하다.On the other hand, it is preferable to further add a reset step (S70) of reconnecting after the determination step, after the determination step is continuously abnormal, the three phases (R phase, S phase, T phase) are separated.

본 발명의 내,외부노이즈 및 외란이 방지되는 역상계전기는 도 2에 나타낸 바와 같이, 변압기(10), 릴레이(20), LDO(LOW-DROPOUT)(30), 파워스위치(40), 3상검출부(50), MCU(마이크로 컨트롤러)(60), LED표시부(70)을 포함하여 구성된다.The reverse phase relay in which internal and external noise and disturbances of the present invention are prevented is a transformer 10, a relay 20, an LDO (LOW-DROPOUT) 30, a power switch 40, and a three-phase, as shown in FIG. It includes a detection unit 50, a microcontroller (MCU) 60, and an LED display unit 70.

상기 변압기(10)는 AC8V 및 AC110V를 생성하도록 이루어지며 AC8V는 MCU(60)에 공급되며, AC110V는 릴레이(20)를 거쳐 제어부(미도시)에 공급되게 이루어진다.The transformer 10 is configured to generate AC8V and AC110V, and AC8V is supplied to the MCU 60, and AC110V is supplied to a control unit (not shown) through the relay 20.

상기 릴레이(20)는 변압기(10)와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC110V를 MCU(마이크로 컨트롤러)의 제어에 따라 A접점으로 변환하거나 B접점이 유지되게 이루어진다.The relay 20 is installed to be electrically connected to the transformer 10 to convert AC110V generated from the transformer into a contact A or maintain a contact B according to the control of a microcontroller (MCU).

상기 LDO(LOW-DROPOUT)(30)는 변압기와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC8V를 DC5V로 변압하도록 이루어진다.The LOW-DROPOUT (LDO) 30 is installed to be electrically connected to a transformer to convert AC8V generated from the transformer into DC5V.

상기 파워스위치(40)는 LDO와 전기적으로 연결되게 설치되어 LDO로부터 변압된 전류를 MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상)에 공급하게 이루어진다.The power switch 40 is installed to be electrically connected to the LDO to supply the transformed current from the LDO to the MCU (microcontroller) and three phases (R phase, S phase, T phase) electrically connected to the circuit.

상기 3상검출부(50)는 3상(R상,S상,T상)과 전기적으로 연결되게 설치되어 3상(R상,S상,T상)의 신호를 MCU(마이크로 컨트롤러)가 인식되게 변환하게 이루어진다.The three-phase detection unit 50 is installed to be electrically connected to three phases (R phase, S phase, T phase) so that the signals of the three phases (R phase, S phase, T phase) are recognized by the MCU (microcontroller). It is made to convert.

상기 MCU(마이크로 컨트롤러)(60)는 3상검출부와 전기적으로 연결되게 설치되어 검출된 신호를 토대로 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 내,외부노이즈 및 외란을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 대기상태로 전환하여 릴레이를 제어가능하게 이루어진다.The MCU (microcontroller) 60 is installed to be electrically connected to the three-phase detection unit and determines that it is normal or abnormal (reverse phase, phase loss) based on the detected signal. Maintenance) and power switch OFF to prevent internal and external noise and disturbance.In case of abnormality, the LED display indicates abnormal (reverse phase, phase loss), and the relay (A contact conversion) and power switch are kept ON to convert to standby state. Thus, the relay can be controlled.

상기 LED표시부(70)는 MCU(마이크로 컨트롤러)와 전기적으로 연결되게 설치되어 MCU(마이크로 컨트롤러)의 지시에따라 정상,비정상(역상,결상)을 표시 가능하게 이루어진다. The LED display unit 70 is installed to be electrically connected to a microcontroller (MCU) to display normal and abnormal (reverse phase, phase loss) according to the instruction of the microcontroller (MCU).

상기의 구조들로 이루어진 역상계전기는 MOV(Motor Operated Valve Actuator)(미도시)와 전기적으로 연결되게 설치되는 것이 바람직하다.It is preferable that the reverse phase relay consisting of the above structures is installed to be electrically connected to a Motor Operated Valve Actuator (MOV) (not shown).

한편, MOV(Motor Operated Valve Actuator)(80)는 주로 3상모터를 이용하여 산업용 Valve의 개/폐에 사용되는 장치로 전기 모터(Motor)에 의해 구동된다.On the other hand, MOV (Motor Operated Valve Actuator) 80 is a device mainly used for opening/closing industrial valves using a three-phase motor, and is driven by an electric motor.

본 발명은 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하여 내,외부노이즈 및 외란이 방지되는 효과가 있다.The present invention determines that it is normal or abnormal (reverse phase, phase loss) according to the three-phase detection signal, indicates that it is normal on the LED display unit, and turns off the relay (maintaining the B contact) and the power switch. It is not affected by internal and external noise and external disturbances to prevent malfunction of the MCU. In case of abnormality, the LED display indicates abnormal (reverse phase, phase loss), and the relay (A contact conversion) and power switch are kept ON to wait for the MCU. It has the effect of preventing internal and external noise and disturbance by switching to the state.

본 발명에 의해, 3상검출 신호에 따라 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 원천적으로 전원과 신호선을 통해 유입되는 내,외부노이즈 및 외란에 영향을 받지않아 MCU의 오동작을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 내,외부노이즈 및 외란이 방지되는 역상계전방법 및 역상계전기를 제공한다.According to the present invention, it is determined that it is normal or abnormal (reverse phase, phase loss) according to the three-phase detection signal, and when it is normal, the LED display unit indicates that it is normal, and the relay (maintaining the B contact) and the power switch are turned off. It prevents the malfunction of the MCU because it is not affected by internal and external noise and external disturbances flowing through it. In case of abnormality, the LED display indicates abnormal (reverse phase, phase loss), and the relay (A contact conversion) and power switch are kept ON. It provides a reverse phase relay method and a reverse phase relay in which internal and external noise and disturbances are prevented to convert to the standby state.

S10: 시작단계
S20: 초기화단계
S30: 3상변환단계
S40: 판정단계
S50: 유지단계
S60: 대기단계
S70: 리셋단계
10: 변압기
20: 릴레이
30: LDO(LOW-DROPOUT)
40: 파워스위치
50: 3상검출부
60: MCU(마이크로 컨트롤러)
70: LED표시부S10: starting stage
S20: Initialization step
S30: 3-phase conversion step
S40: judgment step
S50: maintenance phase
S60: waiting phase
S70: reset step
10: transformer
20: relay
30: LDO (LOW-DROPOUT)
40: power switch
50: 3-phase detection unit
60: MCU (microcontroller)
70: LED display

Claims (3)

MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상) 에 전원이 인가되는 시작단계(S10);
상기 시작단계후, 전원을 감지한 MCU가 기능초기화를 진행하는 초기화단계(S20);
상기 초기화단계후, 3상검출부를 통해 검출된 신호를 MCU가 인식되도록 변환하는 3상변환단계(S30);
상기 3상변환단계후, MCU가 검출된 신호를 토대로 정상 또는 비정상(역상,결상)을 판단하는 판정단계(S40); 및
상기 판정단계후, 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 역상계전기 OFF하여 내,외부노이즈 및 외란이 방지되는 유지단계(S50);
상기 판정단계후, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 MCU를 대기상태로 전환하는 대기단계(S60);를 포함하여 구성되며,
상기 판정단계후, 3상(R상,S상,T상) 분리후, 재연결하는 리셋단계(S70)가 더 추가되는 것을 특징으로 하는 내,외부노이즈 및 외란이 방지되는 역상계전방법.A starting step (S10) of applying power to the MCU (microcontroller) and the three phases (R phase, S phase, T phase) electrically connected to the circuit;
After the starting step, an initialization step (S20) in which the MCU, which has detected power, performs a function initialization;
After the initialization step, a three-phase conversion step (S30) of converting the signal detected through the three-phase detection unit so that the MCU is recognized;
After the three-phase conversion step, a determination step (S40) in which the MCU determines normal or abnormal (reverse phase, phase loss) based on the detected signal; And
After the determination step, when normal, a maintenance step (S50) in which internal and external noise and disturbance are prevented by indicating that the LED display is normal and turning off the relay (maintaining the B contact) and the reverse phase relay;
After the determination step, when abnormal, a standby step (S60) of switching the MCU to the standby state by displaying the abnormality (reverse phase, phase loss) on the LED display unit and maintaining the relay (A contact conversion) and the power switch ON (S60); And
After the determination step, after the separation of the three phases (R phase, S phase, T phase), a reset step (S70) of reconnecting is further added to prevent internal and external noise and disturbance reverse phase relay method. AC8V 및 AC110V를 생성하도록 한 변압기(10);
상기 변압기(10)와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC110V를 A접점으로 변환하거나 B접점이 유지되도록 한 릴레이(20);
상기 변압기와 전기적으로 연결되게 설치되어 변압기로부터 생성된 AC8V를 DC5V로 변압하도록 한 LDO(LOW-DROPOUT)(30);
상기 LDO와 전기적으로 연결되게 설치되어 LDO로부터 변압된 전류를 MCU(마이크로 컨트롤러) 및 회로에 전기적으로 연결되는 3상(R상,S상,T상)에 공급하도록 한 파워스위치(40);
상기 3상(R상,S상,T상)과 전기적으로 연결되게 설치되어 3상(R상,S상,T상)의 신호를 MCU(마이크로 컨트롤러)가 인식되게 변환하도록 한 3상검출부(50);
상기 3상검출부와 전기적으로 연결되게 설치되어 검출된 신호를 토대로 정상,비정상(역상,결상)임을 판단하여 정상시, LED표시부에 정상임을 표시하고 릴레이(B접점유지) 및 파워스위치를 OFF하여 내,외부노이즈 및 외란을 방지하고, 비정상시, LED표시부에 비정상(역상,결상)임을 표시하고 릴레이(A접점변환) 및 파워스위치 ON을 유지하여 대기상태로 전환하여 릴레이를 제어하도록 한 MCU(마이크로 컨트롤러)(60); 및
상기 MCU(마이크로 컨트롤러)와 전기적으로 연결되게 설치되어 MCU(마이크로 컨트롤러)의 지시에따라 정상,비정상(역상,결상)을 표시하도록 한 LED표시부(70)를 포함하여 구성된, 내,외부노이즈 및 외란이 방지되는 역상계전기.A transformer 10 to generate AC8V and AC110V;
A relay 20 installed to be electrically connected to the transformer 10 to convert AC110V generated from the transformer into an A contact or maintain a B contact;
An LDO (LOW-DROPOUT) 30 installed to be electrically connected to the transformer to convert AC8V generated from the transformer into DC5V;
A power switch 40 installed to be electrically connected to the LDO to supply the transformed current from the LDO to the MCU (microcontroller) and the three phases (R phase, S phase, T phase) electrically connected to the circuit;
A three-phase detection unit that is installed to be electrically connected to the three phases (R phase, S phase, T phase) and converts the signals of the three phases (R phase, S phase, T phase) so that the microcontroller (MCU) can recognize them ( 50);
It is installed to be electrically connected to the three-phase detection unit and judges that it is normal or abnormal (reverse phase, phase loss) based on the detected signal, and when it is normal, indicates that it is normal on the LED display, and turns off the relay (maintain B contact) and the power switch. ,External noise and disturbance are prevented, and when abnormal, the LED display indicates abnormal (reverse phase, phase loss), and the relay (A contact conversion) and power switch are turned ON to switch to the standby state to control the relay. Controller) 60; And
It is installed to be electrically connected to the MCU (microcontroller) and configured to display normal and abnormal (reverse phase, phase loss) according to the instructions of the MCU (microcontroller), internal and external noise and disturbance The reverse phase relay is prevented. 제 2항에 있어서, 상기의 역상계전기는 MOV(Motor Operated Valve Actuator)(미도시)와 전기적으로 연결되게 설치되는 것을 특징으로 하는 내,외부노이즈 및 외란이 방지되는 역상계전기.
The reverse phase relay according to claim 2, wherein the reverse phase relay is installed to be electrically connected to a Motor Operated Valve Actuator (MOV) (not shown).
KR1020200137585A 2020-10-22 2020-10-22 The Negative-phase Relay method and Negative-phase Relay KR102242985B1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100230362B1 (en) * 1996-06-25 1999-11-15 윤종용 Initial device of micro controller using power voltage control
KR100262743B1 (en) * 1998-05-25 2000-08-01 이진수 Digital ground fault detecting relay
KR20080035540A (en) 2008-03-20 2008-04-23 삼화이오씨알 주식회사 Protective device detecting reverse phase by double intergration
KR100883771B1 (en) * 2007-08-13 2009-02-18 삼화디에스피주식회사 Electronic relay for open phase and reverse voltage protection
KR20110014302A (en) * 2009-08-05 2011-02-11 서재성 An electric actuator controller for valve control using i2c bus
KR101291767B1 (en) * 2013-04-18 2013-08-01 세종전기공업 주식회사 Switchboards with standby power cut off functions
CN110221113A (en) * 2018-03-02 2019-09-10 西门子公司 Device and method for fault current

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100230362B1 (en) * 1996-06-25 1999-11-15 윤종용 Initial device of micro controller using power voltage control
KR100262743B1 (en) * 1998-05-25 2000-08-01 이진수 Digital ground fault detecting relay
KR100883771B1 (en) * 2007-08-13 2009-02-18 삼화디에스피주식회사 Electronic relay for open phase and reverse voltage protection
KR20080035540A (en) 2008-03-20 2008-04-23 삼화이오씨알 주식회사 Protective device detecting reverse phase by double intergration
KR20110014302A (en) * 2009-08-05 2011-02-11 서재성 An electric actuator controller for valve control using i2c bus
KR101291767B1 (en) * 2013-04-18 2013-08-01 세종전기공업 주식회사 Switchboards with standby power cut off functions
CN110221113A (en) * 2018-03-02 2019-09-10 西门子公司 Device and method for fault current

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