WO2016209024A1 - Real-time load monitoring and insulation oil deterioration diagnosis method and smart transformer using same - Google Patents

Real-time load monitoring and insulation oil deterioration diagnosis method and smart transformer using same Download PDF

Info

Publication number
WO2016209024A1
WO2016209024A1 PCT/KR2016/006763 KR2016006763W WO2016209024A1 WO 2016209024 A1 WO2016209024 A1 WO 2016209024A1 KR 2016006763 W KR2016006763 W KR 2016006763W WO 2016209024 A1 WO2016209024 A1 WO 2016209024A1
Authority
WO
WIPO (PCT)
Prior art keywords
real
insulating oil
load monitoring
section
temperature
Prior art date
Application number
PCT/KR2016/006763
Other languages
French (fr)
Korean (ko)
Inventor
장태수
윤병주
조용선
Original Assignee
주식회사 비츠로씨앤씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 비츠로씨앤씨 filed Critical 주식회사 비츠로씨앤씨
Publication of WO2016209024A1 publication Critical patent/WO2016209024A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Definitions

  • the present invention relates to a real-time load monitoring and insulation oil degradation diagnosis method and a smart transformer using the same, in detail, by using the real-time load monitoring results and insulation oil degradation diagnosis results at the same time by generating an alarm for the inspection time of the insulation oil
  • the present invention relates to a real-time load monitoring and insulation oil degradation diagnosis method that can increase the accuracy and efficiently use the inspection manpower resources, and a smart transformer using the same.
  • a constant monitoring device In order to secure the reliability of the transformer and to supply the power stably, a constant monitoring device has been developed for measuring the abnormal symptoms that are the beginning of the accident at all times in the operating state of the transformer.
  • a transformer In the case of a transformer, it consists of a transverse coil consisting of a primary coil and a secondary coil, and a housing for accommodating the mutual induction of the transcoil and a housing accommodating the mutually coupled transcoil and the magnetic field core.
  • an insulating insulating coolant hereinafter referred to as 'insulating oil'
  • 'insulating oil' an insulating insulating coolant
  • insulation oil deterioration due to thermal deterioration due to high temperature operation, thermal deterioration due to external short circuit, mechanical damage and discharge deterioration due to partial discharge, combustible gas is generated in the insulating oil of the transformer over time, which is called insulation oil deterioration. If the insulating oil of the transformer deteriorates, a check for replacement is to be carried out. The timing of the inspection is closely related to the amount of flammable gas and the temperature of the insulating oil.
  • Korean Patent No. 10-1090143 discloses a prior art document relating to a transformer having an insulation oil degradation measurement sensor.
  • the present invention generates an alarm for the inspection time of the insulating oil by using the real-time load monitoring result and the insulation oil degradation diagnosis result at the same time to increase the accuracy of the prediction of the inspection time and to use the inspection manpower resources efficiently, the real-time load monitoring and insulation oil degradation diagnosis method And to provide a smart transformer using the same.
  • the present invention provides a real-time load monitoring that solves the problem of the implementation by having a database for storing the temperature characteristics according to the type of the flammable gas and the criteria for determining where the detection amount of the flammable gas falls among the safety section, attention section and abnormal section And to provide a smart transformer using the insulation oil degradation diagnostic method.
  • Smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method for achieving the above object is a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method, of the smart transformer
  • An insulation oil degradation diagnosis sensor configured to measure and output a detected amount of a combustible gas contained in the insulation oil and a temperature of the insulation oil
  • a load monitoring sensor measuring and outputting three-phase current / voltage from the load of the smart transformer
  • a database unit which stores a temperature characteristic according to a type of combustible gas and a criterion for determining where the detected amount of flammable gas corresponds to a safety section, a caution section or an abnormal section
  • a determination unit for inputting a detection amount of flammable gas measured by the insulation oil degradation diagnosis sensor, and determining whether the detection amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit;
  • the combustible gas for which the insulation oil degradation diagnostic sensor measures the detection amount is hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ) , Propane (C 3 H 8 ) It may be any one selected from.
  • the alarm unit may generate an alarm for checking the insulating oil based on a value obtained by averaging the temperature of the insulating oil and the three-phase current / voltage for a predetermined period when the determination of the determination unit is a caution period.
  • the smart transformer using the real-time load monitoring and insulation oil degradation diagnostic method is selected from among the Ethernet, mobile communication network, Wi-Fi, Bluetooth and radio wave recognition of the data on the three-phase current / voltage, the detection amount of the flammable gas and the insulation oil temperature It may further include a communication unit for transmitting to an external terminal using any one communication means.
  • the communication unit may have a function of converting data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature into a data format compatible with any one selected from Modbus, DNP, and IEC 61850.
  • Real-time load monitoring and insulation oil degradation diagnosis method for achieving the above object in the real-time load monitoring and insulation oil degradation diagnostic method for a smart transformer, a) the detected amount of the flammable gas Preparing a database of temperature characteristics according to types of combustible gases and criteria for determining which of the safety section, the attention section and the abnormal section; b) measuring the amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil; c) measuring three-phase current / voltage at the load of the smart transformer; d) determining whether the detected amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit; e) If the detection amount of flammable gas corresponds to an abnormal section, generate an alarm for checking the insulating oil; if the detection amount of flammable gas corresponds to an attention interval, the temperature of the insulating oil, the three-phase current / voltage and the
  • the combustible gas of step b) is hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ) may be any one selected from.
  • the detection amount of the flammable gas in the step e) corresponds to the caution interval, it is possible to generate an alarm for the insulating oil check based on the average of the temperature of the insulating oil and the three-phase current / voltage in a predetermined period. .
  • the real-time load monitoring and insulation oil degradation diagnosis method is followed by step e) f) the data of the three-phase current / voltage, the detection amount of the flammable gas and the insulation oil temperature Ethernet, mobile communication network, Wi-Fi, Bluetooth and radio waves
  • the method may further include transmitting to an external terminal using any one communication means selected from among the recognition.
  • the step f) converts the data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature into a data format suitable for any one data communication standard selected from Modbus, DNP and IEC 61850 Can be sent to the terminal.
  • the present invention can solve the problem of the implementation by having a database for storing the temperature characteristics according to the type of the combustible gas and the criteria for determining where the detection amount of the flammable gas falls among the safety section, attention section and abnormal section.
  • FIG. 1 is a conceptual diagram of a power grid to which a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention.
  • FIG. 2 is a block diagram illustrating a function of a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention.
  • FIG. 3 is a table illustrating criteria for determining which of a safety section, a caution section, and an abnormal section correspond to the detected amount of flammable gas.
  • FIG. 5 is a flowchart illustrating a real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention.
  • Applicant is concerned about how to determine whether an alarm is generated when the amount of flammable gas measured by the insulation oil deterioration diagnostic sensor is in the caution period, but if the current and voltage of the transformer load are high, the amount of flammable gas is near. It was found that this abnormal section was reached and deepened to complete the present invention.
  • the power grid to which the smart transformer using the real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention may include a smart transformer 100, a communication network 200, a terminal 300 and a monitoring center 400. .
  • the smart transformer 100 has an automation function by ICT (Information and Communications Technologies) added to a conventional transformer, and has a function of processing information on current and voltage of a load, temperature and gas composition of an insulating oil, and the like. It can perform remote condition monitoring diagnosis or remote meter reading function.
  • ICT Information and Communications Technologies
  • the communication network 200 is a set of resources constituting a communication path between terminal devices and may be any physical layer including a wired communication network and a wireless communication network, and a dedicated communication network using a protocol such as IEC 61850, DNP, Modbus, or the like. It may be a commercial communication network.
  • the terminal 300 is a device capable of transmitting and receiving information using the communication network 200, and may be a laptop, a smartphone, a personal computer, or the like.
  • the monitoring center 400 is installed in a substation, a management station of a smart grid network, etc., and is connected to the communication network 200 as a device or a set of devices for performing the state monitoring diagnosis and load monitoring of the smart transformer 100, IEC 61850, DNP,
  • the protocols defined in the standards for substation automation, such as Modbus, can be used.
  • Smart transformer 100 is a terminal 300 by using the communication network 200, such as Ethernet, mobile communication network, Wi-Fi, Bluetooth, radio wave recognition data of the three-phase current / voltage of the load, the detection amount of the flammable gas and the insulating oil temperature Can be transmitted directly or indirectly, and the monitoring center 400 uses a protocol according to the standards such as IEC 61850, DNP, Modbus, etc., and is connected to the communication network 200 using an inverter, etc. It is possible to collect data on the voltage / voltage, the detection amount of the flammable gas and the insulating oil temperature from the transformer (100).
  • the communication network 200 such as Ethernet, mobile communication network, Wi-Fi, Bluetooth, radio wave recognition data of the three-phase current / voltage of the load, the detection amount of the flammable gas and the insulating oil temperature Can be transmitted directly or indirectly, and the monitoring center 400 uses a protocol according to the standards such as IEC 61850, DNP, Modbus, etc., and is connected to the communication network 200 using an inverter,
  • Smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention is the insulation oil degradation diagnostic sensor 110, load monitoring sensor 120, database unit 140, determination unit 130, alarm unit 150, the communication unit 160 may be included.
  • the insulation oil degradation diagnosis sensor 110 may measure and output the detected amount of the combustible gas contained in the insulation oil of the smart transformer 100 and the temperature of the insulation oil.
  • the combustible gases generated from the insulating oil of the transformer hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane ( C 3 H 8 ) and so on, the insulating oil degradation diagnostic sensor 110 should be able to measure them.
  • the load monitoring sensor 120 may measure and output three-phase current / voltage from the load of the smart transformer.
  • the database unit 140 may store a criterion for determining where the measured amount of flammable gas corresponds to a safety section, a caution section, and an abnormal section and temperature characteristics according to the type of the flammable gas.
  • the safety section, caution section and abnormal section will be explained. If the detected amount of flammable gas corresponds to the normal section, there is no need to check the insulating oil. It may mean that there is a need. In the middle section, the caution section (Caution) does not determine the necessity of the inspection only by the detection amount of flammable gas. You can get off. In addition, since the degree of influence of the surrounding environment (for example, the temperature of the insulating oil) may vary depending on the type of flammable gas, information on this is necessary.
  • the temperature characteristic requires T abnormal , which is a temperature at which an abnormal section with respect to temperature starts, t move , which is a time required to start an insulating oil check, and a detailed description and application thereof will be described later. Therefore, since the temperature characteristic according to the type of combustible gas and the criterion for determining where the detected amount of flammable gas corresponds to a safety section, a caution section and an abnormal section are required for each combustible gas, it is necessary to make a database.
  • the determination unit 130 receives a detection amount of the flammable gas measured by the insulation oil degradation diagnostic sensor, and determines whether the detection amount of the flammable gas corresponds to a safety section, a warning section, or an abnormal section according to a reference stored in the database unit 140. You can print The determination unit must be electrically connected to access the database unit 140.
  • the temperature of the insulating oil, the three-phase current / voltage and the determination of the determination unit is input to the alarm unit 150, and if the determination of the determination unit 130 is an abnormal section, generates an alarm for the inspection of the insulating oil, the determination unit 130 If the judgment is a safety zone, no alarm is generated for the insulation oil check. If the judgment of the determination unit 130 is a caution section, the alarm may be generated based on the temperature of the insulating oil, the three-phase current / voltage, and the temperature characteristics according to the type of the combustible gas stored in the database unit 140. Describe it.
  • I is the effective value of the three-phase current measured at the load
  • r is the resistance of the field core and transcoil of the transformer
  • C is the heat capacity of the entire insulating oil
  • T abnormal is the temperature at which the abnormal section starts
  • T measure is the measured insulating oil.
  • the temperature, t move is the time required to start the oil check.
  • I 2 r may be replaced with V 2 / r, where V is the effective value of the voltage measured at the load.
  • the alarm unit 150 uses a value obtained by averaging the temperature of the insulating oil and the three-phase current / voltage for a predetermined period, which is the current or voltage.
  • the predetermined time is preferably 1 minute or more because the residual noise is very large in the case of 1 minute or less.
  • t move is the time it takes to start the inspection by sending manpower to the inspection site for oil, taking into consideration the distance between the atmospheric manpower and the voltage transformer, the time it takes to prepare for the replacement of oil, and the risks of temperature depending on the type of oil. Can be determined.
  • the left side of Equation 1 is the amount of heat required for the temperature of the transformer insulating oil to reach the abnormal section, and the right side is the amount of heat generated from the transformer. Therefore, the transformer can be evaluated as dangerous when the right side is larger than the left side.
  • T abnormal and t move may be values stored in the database unit 140 as values determined according to the type of combustible gas.
  • Equation 1 is summarized as Equation 2 with respect to the current value measured at the load.
  • Equation 2 using the T abnormal , t move , C and r stored in the database unit 140, it can be seen that the generation criteria of the alarm according to the current measured at the load is presented.
  • the communication unit 160 inputs data and alarms regarding three-phase current / voltage, flammable gas detection amount, and insulating oil temperature through one of a communication network or a communication channel selected from Ethernet, mobile communication network, Wi-Fi, Bluetooth, and radio wave recognition. Data can be transmitted to an external terminal.
  • the communication unit 160 may further have a function of converting the input data into a format satisfying a protocol defined in a standard for substation automation such as IEC 61850, DNP, Modbus, etc., for data exchange with the monitoring center 400. Can be.
  • FIG. 3 is a table illustrating criteria for determining which of a safety section, a caution section, and an abnormal section correspond to the detected amount of flammable gas.
  • hydrogen (H 2 ) acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ), and the like.
  • the detection amount of the same flammable gas it is possible to know whether it corresponds to a safety section, a warning section, or an abnormal section. In practical example, if 500 ppm of hydrogen (H 2 ) is measured, it corresponds to Caution.
  • FIG. 4 is a table showing the probability of transformer accident according to the measured temperature of the insulating oil. Depending on the type of combustible gas, the probability that a transformer malfunctions will vary because of temperature. Referring to FIG. 4, it can be seen that hydrogen (H 2 ) has a lower risk of malfunction when the temperature is higher than that of ethylene (C 2 H 4 ). Because these characteristics can be applied to move the t Equation (1), in the case of hydrogen (H 2), the t move relative to ethylene (C 2 H 4) can be set large.
  • the real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention a) the criterion and the flammable gas to determine whether the detected amount of flammable gas corresponds to the safety section, attention section and abnormal section Preparing a database for temperature characteristics according to the type (S10), b) measuring the amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil (S20), c) the smart transformer Measuring a three-phase current / voltage at a load of (S30), d) determining whether the detected amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit ( S40) and e) if the detection amount of the flammable gas corresponds to the abnormal section, generates an alarm for the insulating oil check, the detection amount of the insulating oil check, the detection amount of the insulating oil check, the detection amount of the insulating oil check, the detection amount of

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Testing Relating To Insulation (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

The present invention relates to a real-time load monitoring and insulation oil deterioration diagnosis method and a smart transformer using the same and, more specifically, to a real-time load monitoring and insulation oil deterioration diagnosis method, which can generate an alarm for an insulation oil inspection time point simultaneously using a real-time load monitoring result and an insulation oil deterioration diagnosis result so as to increase accuracy for inspection time point prediction and effectively use inspection human resources, and a smart transformer using the same.

Description

실시간 부하감시 및 절연유 열화진단 방법과 이를 이용한 스마트 변압기Real time load monitoring and insulation oil degradation diagnosis method and smart transformer using the same
본 발명은 실시간 부하감시 및 절연유 열화진단 방법과 이를 이용한 스마트 변압기에 관한 것으로, 상세하게는 실시간 부하감시 결과와 절연유 열화진단 결과를 동시에 이용하여 절연유 점검시점에 대한 알람을 생성함으로써 점검시점 예측에 대한 정확도를 높이고 점검 인력 자원을 효율적으로 사용할 수 있는 실시간 부하감시 및 절연유 열화진단 방법과 이를 이용한 스마트 변압기에 관한 것이다.The present invention relates to a real-time load monitoring and insulation oil degradation diagnosis method and a smart transformer using the same, in detail, by using the real-time load monitoring results and insulation oil degradation diagnosis results at the same time by generating an alarm for the inspection time of the insulation oil The present invention relates to a real-time load monitoring and insulation oil degradation diagnosis method that can increase the accuracy and efficiently use the inspection manpower resources, and a smart transformer using the same.
변압기의 신뢰성을 확보하여 안정적으로 전력을 공급하기 위해, 사고의 발단이 되는 이상징후를 변압기의 운전상태에서 상시로 측정하기 위한 상시 감시장치가 개발되고 있다.In order to secure the reliability of the transformer and to supply the power stably, a constant monitoring device has been developed for measuring the abnormal symptoms that are the beginning of the accident at all times in the operating state of the transformer.
변압기의 경우에는 1차 코일과 2차 코일로 이루어진 트랜스코일과 트랜스코일의 상호유도 작용의 원활함을 위한 계자철심과, 상호 결합된 트랜스코일과 계자철심을 수납하는 하우징으로 구성되며, 하우징에는 변압과정에 발생하는 열을 냉각하기 위하여 절연성을 갖는 절연 냉각유(이하 '절연유' 라 칭함)가 채워져 있다. In the case of a transformer, it consists of a transverse coil consisting of a primary coil and a secondary coil, and a housing for accommodating the mutual induction of the transcoil and a housing accommodating the mutually coupled transcoil and the magnetic field core. In order to cool the heat generated in the process, an insulating insulating coolant (hereinafter referred to as 'insulating oil') is filled.
그런데, 고온운전에 따른 열적열화, 외부 단락에 따른 열적열화, 기계적 손상 및 부분 방전에 따른 방전열화에 의해서, 시간이 지남에 따라 변압기의 절연유에는 가연성가스가 발생하는데, 이것을 절연유 열화라고 한다. 변압기의 절연유가 열화되면 교체를 위한 점검이 실시되어야 하는데, 점검시기는 가연성가스의 양과 절연유의 온도와 밀접한 관련이 있다.However, due to thermal deterioration due to high temperature operation, thermal deterioration due to external short circuit, mechanical damage and discharge deterioration due to partial discharge, combustible gas is generated in the insulating oil of the transformer over time, which is called insulation oil deterioration. If the insulating oil of the transformer deteriorates, a check for replacement is to be carried out. The timing of the inspection is closely related to the amount of flammable gas and the temperature of the insulating oil.
이러한 절연유 열화 측정 센서를 구비한 변압기에 관한 선행문헌으로는 한국 등록특허 제10-1090143호가 있다.Korean Patent No. 10-1090143 discloses a prior art document relating to a transformer having an insulation oil degradation measurement sensor.
다만, 이러한 방법은 변압기 부하에 대한 정보를 고려하지 않기 때문에 절연유의 열화를 정밀하게 예측하지 못했다.However, since this method does not consider the information on the transformer load, it cannot accurately predict the deterioration of the insulating oil.
본 발명은 실시간 부하감시 결과와 절연유 열화진단 결과를 동시에 이용하여 절연유 점검시점에 대한 알람을 생성함으로써 점검시점 예측에 대한 정확도를 높이고 점검 인력 자원을 효율적으로 사용할 수 있는 실시간 부하감시 및 절연유 열화진단 방법과 이를 이용한 스마트 변압기를 제공하는 것을 목적으로 한다.The present invention generates an alarm for the inspection time of the insulating oil by using the real-time load monitoring result and the insulation oil degradation diagnosis result at the same time to increase the accuracy of the prediction of the inspection time and to use the inspection manpower resources efficiently, the real-time load monitoring and insulation oil degradation diagnosis method And to provide a smart transformer using the same.
또한, 본 발명은 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성이 저장된 데이터베이스부를 구비함으로써, 구현의 문제점을 해결한 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기를 제공하는 것을 목적으로 한다.In addition, the present invention provides a real-time load monitoring that solves the problem of the implementation by having a database for storing the temperature characteristics according to the type of the flammable gas and the criteria for determining where the detection amount of the flammable gas falls among the safety section, attention section and abnormal section And to provide a smart transformer using the insulation oil degradation diagnostic method.
본 발명의 다른 목적들은 이하의 실시 예에 대한 설명을 통해 쉽게 이해될 수 있을 것이다.Other objects of the present invention will be readily understood through the following description of the embodiments.
상기한 바와 같은 목적을 달성하기 위한 본 발명의 바람직한 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기에 있어서, 상기 스마트 변압기의 절연유에 포함된 가연성가스의 검출량과 상기 절연유의 온도를 측정하여 출력하는 절연유 열화진단 센서; 상기 스마트 변압기의 부하에서 3상 전류/전압을 측정하여 출력하는 부하감시 센서; 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성이 저장된 데이터베이스부; 상기 절연유 열화진단 센서가 측정한 가연성가스의 검출량이 입력되고, 상기 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 상기 데이터베이스부에 저장된 기준에 따라 판단하여 출력하는 판단부; 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 판단부의 판단이 입력되고, 상기 판단부의 판단이 비정상구간이면 절연유 점검에 대한 알람을 생성하고, 상기 판단부의 판단이 주의구간이면 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 데이터베이스부에 저장된 가연성가스의 종류에 따른 온도 특성에 근거하여 상기 알람을 생성하는 알람부;를 포함할 수 있다.Smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention for achieving the above object is a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method, of the smart transformer An insulation oil degradation diagnosis sensor configured to measure and output a detected amount of a combustible gas contained in the insulation oil and a temperature of the insulation oil; A load monitoring sensor measuring and outputting three-phase current / voltage from the load of the smart transformer; A database unit which stores a temperature characteristic according to a type of combustible gas and a criterion for determining where the detected amount of flammable gas corresponds to a safety section, a caution section or an abnormal section; A determination unit for inputting a detection amount of flammable gas measured by the insulation oil degradation diagnosis sensor, and determining whether the detection amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit; The temperature of the insulating oil, the three-phase current / voltage and the determination of the determination unit is input, if the determination of the determination unit is an abnormal section generates an alarm for the insulating oil check, if the determination of the determination unit is a caution section, the temperature of the insulating oil, And an alarm unit configured to generate the alarm based on the three-phase current / voltage and temperature characteristics according to the type of combustible gas stored in the database unit.
여기서, 상기 절연유 열화진단 센서가 검출량을 측정하는 가연성가스는 수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 가운데 선택된 어느 하나일 수 있다.The combustible gas for which the insulation oil degradation diagnostic sensor measures the detection amount is hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ) , Propane (C 3 H 8 ) It may be any one selected from.
또한, 상기 알람부는 상기 판단부의 판단이 주의구간이면, 상기 절연유의 온도와 상기 3상 전류/전압을 기설정된 기간동안 평균한 값에 근거하여 절연유 점검에 대한 알람을 생성할 수 있다.The alarm unit may generate an alarm for checking the insulating oil based on a value obtained by averaging the temperature of the insulating oil and the three-phase current / voltage for a predetermined period when the determination of the determination unit is a caution period.
또한, 상기 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기는 상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 이더넷, 이동통신망, 와이파이, 블루투스 및 무선전파인식 가운데 선택된 어느 하나의 통신수단을 이용하여 외부의 단말기에 전송하는 통신부를 더 포함할 수 있다.In addition, the smart transformer using the real-time load monitoring and insulation oil degradation diagnostic method is selected from among the Ethernet, mobile communication network, Wi-Fi, Bluetooth and radio wave recognition of the data on the three-phase current / voltage, the detection amount of the flammable gas and the insulation oil temperature It may further include a communication unit for transmitting to an external terminal using any one communication means.
또한, 상기 통신부는 상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 Modbus, DNP 및 IEC 61850 가운데 선택된 어느 하나와 호환되는 데이터 형식으로 변환하는 기능을 가질 수 있다.In addition, the communication unit may have a function of converting data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature into a data format compatible with any one selected from Modbus, DNP, and IEC 61850.
상기한 바와 같은 목적을 달성하기 위한 본 발명의 바람직한 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법은 스마트 변압기에 대한 실시간 부하감시 및 절연유 열화진단 방법에 있어서, a) 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성에 대한 데이터 베이스를 준비하는 단계; b) 상기 스마트 변압기의 절연유에 포함된 가연성가스의 검출량과 상기 절연유의 온도를 측정하는 단계; c) 상기 스마트 변압기의 부하에서 3상 전류/전압을 측정하는 단계; d) 상기 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 상기 데이터베이스부에 저장된 기준에 따라 판단하는 단계; e) 가연성가스의 검출량이 비정상구간에 해당하면 절연유 점검에 대한 알람을 생성하고, 가연성가스의 검출량이 주의구간에 해당하면 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 데이터베이스부에 저장된 가연성가스의 종류에 따른 온도 특성에 근거하여 알람을 생성하는 단계;를 포함할 수 있다.Real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention for achieving the above object in the real-time load monitoring and insulation oil degradation diagnostic method for a smart transformer, a) the detected amount of the flammable gas Preparing a database of temperature characteristics according to types of combustible gases and criteria for determining which of the safety section, the attention section and the abnormal section; b) measuring the amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil; c) measuring three-phase current / voltage at the load of the smart transformer; d) determining whether the detected amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit; e) If the detection amount of flammable gas corresponds to an abnormal section, generate an alarm for checking the insulating oil; if the detection amount of flammable gas corresponds to an attention interval, the temperature of the insulating oil, the three-phase current / voltage and the combustible gas stored in the database unit And generating an alarm based on the temperature characteristic according to the type of the.
여기서, 상기 b) 단계의 가연성가스는 수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 가운데 선택된 어느 하나일 수 있다.Here, the combustible gas of step b) is hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ) may be any one selected from.
또한, 상기 e)단계에서 가연성가스의 검출량이 주의구간에 해당하면, 상기 절연유의 온도와 상기 3상 전류/전압을 기설정된 기간에 평균한 값에 근거하여 절연유 점검에 대한 알람을 생성할 수 있다.In addition, when the detection amount of the flammable gas in the step e) corresponds to the caution interval, it is possible to generate an alarm for the insulating oil check based on the average of the temperature of the insulating oil and the three-phase current / voltage in a predetermined period. .
또한, 상기 실시간 부하감시 및 절연유 열화진단 방법은 e) 단계 다음으로 f) 상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 이더넷, 이동통신망, 와이파이, 블루투스 및 무선전파인식 가운데 선택된 어느 하나의 통신수단을 이용하여 외부의 단말기에 전송하는 단계를 더 포함할 수 있다.In addition, the real-time load monitoring and insulation oil degradation diagnosis method is followed by step e) f) the data of the three-phase current / voltage, the detection amount of the flammable gas and the insulation oil temperature Ethernet, mobile communication network, Wi-Fi, Bluetooth and radio waves The method may further include transmitting to an external terminal using any one communication means selected from among the recognition.
또한, 상기 f)단계는 상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 Modbus, DNP 및 IEC 61850 가운데 선택된 어느 하나의 데이터 통신규격에 적합한 데이터 포맷으로 변환하여 외부의 단말기에 전송할 수 있다.In addition, the step f) converts the data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature into a data format suitable for any one data communication standard selected from Modbus, DNP and IEC 61850 Can be sent to the terminal.
이상에서 살펴본 바와 같이, 실시간 부하감시 결과와 절연유 열화진단 결과를 동시에 이용하여 절연유 점검시점에 대한 알람을 생성함으로써 점검시점 예측에 대한 정확도를 높이고 점검 인력 자원을 효율적으로 사용할 수 있는 실시간 부하감시 및 절연유 열화진단 방법과 이를 이용한 스마트 변압기를 제공할 수 있다.As discussed above, by using the real-time load monitoring result and the insulation oil degradation diagnosis result at the same time to generate an alarm for the inspection time of the insulating oil, real-time load monitoring and insulating oil that can improve the accuracy of the inspection time prediction and efficiently use the inspection manpower resources The degradation diagnosis method and smart transformer using the same can be provided.
또한, 본 발명은 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성이 저장된 데이터베이스부를 구비함으로써, 구현의 문제점을 해결할 수 있다.In addition, the present invention can solve the problem of the implementation by having a database for storing the temperature characteristics according to the type of the combustible gas and the criteria for determining where the detection amount of the flammable gas falls among the safety section, attention section and abnormal section.
도 1은 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기가 적용된 전력망의 개념도이다.1 is a conceptual diagram of a power grid to which a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기의 기능을 설명하기 위한 블럭도이다.2 is a block diagram illustrating a function of a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention.
도 3은 측정된 가연성가스의 검출량으로부터 안전구간, 주의구간 및 비정상구간 가운데 어디 해당하는지 판단하기 위한 기준을 나타낸 표이다.FIG. 3 is a table illustrating criteria for determining which of a safety section, a caution section, and an abnormal section correspond to the detected amount of flammable gas.
도 4는 측정된 절연유의 온도에 따른 변압기 사고 발생 가능성을 나타낸 표이다.4 is a table showing the probability of transformer accident according to the measured temperature of the insulating oil.
도 5는 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법에 대한 순서도이다.5 is a flowchart illustrating a real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention.
본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 상세한 설명에 상세하게 설명하고자 한다. 그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.
각 도면을 설명하면서 유사한 참조부호를 유사한 구성요소에 대해 사용하였다. 본 발명을 설명함에 있어서 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.In describing the drawings, similar reference numerals are used for similar elements. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.
본 출원인은 절연유 열화진단 센서에서 측정된 가연성가스의 양이 주의구간에 있을 때 알람의 생성 여부를 판단하는 방법에 대해서 고민하다가, 변압기 부하의 전류와 전압이 높은 경우에는 가까운 시점에 가연성가스의 양이 비정상구간에 도달하는 것을 발견하고 이를 심화하여 본 발명을 완성하였다.Applicant is concerned about how to determine whether an alarm is generated when the amount of flammable gas measured by the insulation oil deterioration diagnostic sensor is in the caution period, but if the current and voltage of the transformer load are high, the amount of flammable gas is near. It was found that this abnormal section was reached and deepened to complete the present invention.
도 1은 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기가 적용된 전력망의 개념도이다. 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기가 적용된 전력망은 스마트 변압기(100), 통신망(200), 단말기(300) 및 감시센터(400)를 포함할 수 있다.1 is a conceptual diagram of a power grid to which a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention. The power grid to which the smart transformer using the real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention may include a smart transformer 100, a communication network 200, a terminal 300 and a monitoring center 400. .
스마트 변압기(100)는 종래의 변압기에 ICT(Information and Communications Technologies)에 의한 자동화 기능이 추가된 것으로, 부하의 전류와 전압, 절연유의 온도 및 가스성분 등에 대한 정보를 처리하는 기능을 구비하고 있으며, 원거리 상태 감시 진단이나 원격검침 기능을 수행할 수 있다. The smart transformer 100 has an automation function by ICT (Information and Communications Technologies) added to a conventional transformer, and has a function of processing information on current and voltage of a load, temperature and gas composition of an insulating oil, and the like. It can perform remote condition monitoring diagnosis or remote meter reading function.
통신망(200)은 단말 장치간의 통신경로를 구성하는 자원의 집합으로서 유선통신망, 무선통신망을 포함한 모든 물리계층이 될 수 있으며, IEC 61850, DNP, Modbus 등의 프로토콜을 사용하는 전용통신망 또는 이와 연결되는 상용통신망일 수 있다.The communication network 200 is a set of resources constituting a communication path between terminal devices and may be any physical layer including a wired communication network and a wireless communication network, and a dedicated communication network using a protocol such as IEC 61850, DNP, Modbus, or the like. It may be a commercial communication network.
단말기(300)는 상기 통신망(200)을 이용하여 정보를 송수신할 수 있는 장치로서, 노트북, 스마트폰, 개인용 컴퓨터 등이 될 수 있다.The terminal 300 is a device capable of transmitting and receiving information using the communication network 200, and may be a laptop, a smartphone, a personal computer, or the like.
감시센터(400)는 변전소, 스마트그리드망의 관리소 등에 설치되어 스마트 변압기(100)의 상태감시진단과 부하감시를 수행하는 장치 또는 장치들의 집합으로서 통신망(200)과 연결되고, IEC 61850, DNP, Modbus 등과 같이 변전소 자동화를 위한 표준에 정의된 프로토콜을 사용할 수 있다. The monitoring center 400 is installed in a substation, a management station of a smart grid network, etc., and is connected to the communication network 200 as a device or a set of devices for performing the state monitoring diagnosis and load monitoring of the smart transformer 100, IEC 61850, DNP, The protocols defined in the standards for substation automation, such as Modbus, can be used.
스마트 변압기(100)는 부하의 3상 전류/전압, 가연성가스의 검출량 및 절연유 온도에 대한 데이터를 이더넷, 이동통신망, 와이파이, 블루투스, 무선전파인식 등의 통신망(200)을 이용하여 단말기(300)에 직접 또는 간접적으로 전송할 수 있으며, 감시센터(400)는 IEC 61850, DNP, Modbus 등의 표준에 따른 프로토콜을 사용하며, 통신망(200)에 변환장치 등을 이용하여 접속하여 스마트 부하의 3상 전류/전압, 가연성가스의 검출량 및 절연유 온도에 대한 데이터를 변압기(100)로부터 수집할 수 있다.Smart transformer 100 is a terminal 300 by using the communication network 200, such as Ethernet, mobile communication network, Wi-Fi, Bluetooth, radio wave recognition data of the three-phase current / voltage of the load, the detection amount of the flammable gas and the insulating oil temperature Can be transmitted directly or indirectly, and the monitoring center 400 uses a protocol according to the standards such as IEC 61850, DNP, Modbus, etc., and is connected to the communication network 200 using an inverter, etc. It is possible to collect data on the voltage / voltage, the detection amount of the flammable gas and the insulating oil temperature from the transformer (100).
도 2는 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기의 기능을 설명하기 위한 블럭도이다. 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기는 절연유 열화진단 센서(110), 부하감시 센서(120), 데이터베이스부(140), 판단부(130), 알람부(150), 통신부(160)을 포함할 수 있다. 2 is a block diagram illustrating a function of a smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention. Smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention is the insulation oil degradation diagnostic sensor 110, load monitoring sensor 120, database unit 140, determination unit 130, alarm unit 150, the communication unit 160 may be included.
절연유 열화진단 센서(110)는 스마트 변압기(100)의 절연유에 포함된 가연성가스의 검출량과 절연유의 온도를 측정하여 출력할 수 있다. 특히 변압기의 절연유에서 발생하는 가연성가스 가운데 중요한 것은 수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 등 이므로 절연유 열화진단 센서(110)는 이들을 측정할 수 있어야 한다.The insulation oil degradation diagnosis sensor 110 may measure and output the detected amount of the combustible gas contained in the insulation oil of the smart transformer 100 and the temperature of the insulation oil. In particular, among the combustible gases generated from the insulating oil of the transformer, hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane ( C 3 H 8 ) and so on, the insulating oil degradation diagnostic sensor 110 should be able to measure them.
부하감시 센서(120)는 스마트 변압기의 부하에서 3상 전류/전압을 측정하여 출력할 수 있다.The load monitoring sensor 120 may measure and output three-phase current / voltage from the load of the smart transformer.
데이터베이스부(140)에는 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성이 저장될 수 있다. 안전구간, 주의구간 및 비정상구간에 대해서 설명하면, 측정된 가연성가스의 검출량이 안전구간(Normal)에 해당하는 경우에는 절연유 점검의 필요성이 없고, 비정상구간(Abnormal)에 해당하는 경우에는 절연유 점검의 필요성이 있는 경우를 의미할 수 있다. 가운데 구간인 주의구간(Caution)에서는 가연성가스의 검출량만으로는 점검의 필요성을 단정하지 못하는 경우인데, 절연유의 온도나 가연성가스의 양이 주의구간에 있은 기간 등을 고려하여 절연유 점검의 필요성에 대해 판단을 내릴 수 있다. 또한, 가연성가스의 종류에 따라서 주변환경의 영향(예를 들면 절연유의 온도)을 받는 정도가 다를 수 있으므로 이에 대한 정보가 필요하다. 온도 특성에는 온도에 대한 비정상구간이 시작하는 온도인 Tabnormal, 절연유 점검을 시작하는데 필요한 시간인 tmove 등이 필요한데, 이에 대한 자세한 설명과 적용은 후술한다. 따라서, 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성은 가연성가스마다 필요하므로, 데이터베이스화 될 필요가 있다. The database unit 140 may store a criterion for determining where the measured amount of flammable gas corresponds to a safety section, a caution section, and an abnormal section and temperature characteristics according to the type of the flammable gas. The safety section, caution section and abnormal section will be explained. If the detected amount of flammable gas corresponds to the normal section, there is no need to check the insulating oil. It may mean that there is a need. In the middle section, the caution section (Caution) does not determine the necessity of the inspection only by the detection amount of flammable gas. You can get off. In addition, since the degree of influence of the surrounding environment (for example, the temperature of the insulating oil) may vary depending on the type of flammable gas, information on this is necessary. The temperature characteristic requires T abnormal , which is a temperature at which an abnormal section with respect to temperature starts, t move , which is a time required to start an insulating oil check, and a detailed description and application thereof will be described later. Therefore, since the temperature characteristic according to the type of combustible gas and the criterion for determining where the detected amount of flammable gas corresponds to a safety section, a caution section and an abnormal section are required for each combustible gas, it is necessary to make a database.
판단부(130)는 절연유 열화진단 센서가 측정한 가연성가스의 검출량이 입력받고, 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 데이터베이스부(140)에 저장된 기준에 따라 판단하여 출력할 수 있다. 판단부는 데이터베이스부(140)에 액세스할 수 있도록 전기적으로 연결되어 있어야 한다.The determination unit 130 receives a detection amount of the flammable gas measured by the insulation oil degradation diagnostic sensor, and determines whether the detection amount of the flammable gas corresponds to a safety section, a warning section, or an abnormal section according to a reference stored in the database unit 140. You can print The determination unit must be electrically connected to access the database unit 140.
알람부(150)에는 절연유의 온도, 상기 3상 전류/전압 및 상기 판단부의 판단이 입력되고, 판단부(130)의 판단이 비정상구간이면 절연유 점검에 대한 알람을 생성하고, 판단부(130)의 판단이 안전구간이면 절연유 점검에 대한 알람을 생성하지 않는다. 판단부(130)의 판단이 주의구간이면 절연유의 온도, 3상 전류/전압 및 데이터베이스부(140)에 저장된 가연성가스의 종류에 따른 온도 특성에 근거하여 상기 알람을 생성할 수 있는데, 이하에서 상세히 기술하도록 한다. The temperature of the insulating oil, the three-phase current / voltage and the determination of the determination unit is input to the alarm unit 150, and if the determination of the determination unit 130 is an abnormal section, generates an alarm for the inspection of the insulating oil, the determination unit 130 If the judgment is a safety zone, no alarm is generated for the insulation oil check. If the judgment of the determination unit 130 is a caution section, the alarm may be generated based on the temperature of the insulating oil, the three-phase current / voltage, and the temperature characteristics according to the type of the combustible gas stored in the database unit 140. Describe it.
판단부(130)의 판단이 주의구간일 때, 알람부(150)에서 절연유 점검에 대한 알람을 생성하는 경우는 수학식 1을 만족하는 경우일 수 있다.When the determination of the determination unit 130 is a caution section, when the alarm unit 150 generates the alarm for the insulating oil check, it may be a case where Equation 1 is satisfied.
[수학식 1][Equation 1]
Figure PCTKR2016006763-appb-I000001
Figure PCTKR2016006763-appb-I000001
여기서 I는 부하에서 측정된 3상 전류의 실효값, r은 변압기의 계자철심과 트랜스코일의 저항값, C는 전체 절연유의 열용량, Tabnormal은 비정상구간이 시작하는 온도, Tmeasure는 측정된 절연유의 온도, tmove는 절연유 점검을 시작하는데 필요한 시간이다. 수학식 1에서 I2r 은 V2/r으로 대체될 수도 있는데, 여기서 V는 부하에서 측정된 전압의 실효값을 의미한다. 그런데, 판단부(130)의 판단이 주의구간이면, 상기 절연유의 온도와 상기 3상 전류/전압을 기설정된 기간동안 평균한 값을 알람부(150)가 이용하는 것이 바람직한데, 그것은 전류 또는 전압의 측정에서 발생하는 잔류 노이즈에 의한 편차를 제거하기 위함이다. 상기 기설정된 시간은 1분 이상이 되는 것이 바람직한데 1분 이하의 경우에는 잔류 노이즈가 매우 크기 때문이다. tmove는 절연유 점검 장소에 인력을 파견하여 점검을 시작하는데 걸리는 시간이라고 할 수 있는데, 대기인력과 전압기 간의 거리, 절연유 교체를 준비하는데 걸리는 시간, 절연유 종류에 따른 온도에 대한 위험성 등을 고려하여 결정될 수 있다. 수학식1의 좌변은 변압기 절연유의 온도가 비정상구간에 도달하는 데 필요한 열량이고, 우변은 변압기에서 발생하는 열량이다. 따라서, 좌변보다 우변이 클 때 변압기가 위험한 것으로 평가될 수 있다.Where I is the effective value of the three-phase current measured at the load, r is the resistance of the field core and transcoil of the transformer, C is the heat capacity of the entire insulating oil, T abnormal is the temperature at which the abnormal section starts, and T measure is the measured insulating oil. The temperature, t move , is the time required to start the oil check. In Equation 1, I 2 r may be replaced with V 2 / r, where V is the effective value of the voltage measured at the load. However, if the judgment of the determination unit 130 is a caution period, it is preferable that the alarm unit 150 uses a value obtained by averaging the temperature of the insulating oil and the three-phase current / voltage for a predetermined period, which is the current or voltage. This is to remove the deviation caused by residual noise in the measurement. The predetermined time is preferably 1 minute or more because the residual noise is very large in the case of 1 minute or less. t move is the time it takes to start the inspection by sending manpower to the inspection site for oil, taking into consideration the distance between the atmospheric manpower and the voltage transformer, the time it takes to prepare for the replacement of oil, and the risks of temperature depending on the type of oil. Can be determined. The left side of Equation 1 is the amount of heat required for the temperature of the transformer insulating oil to reach the abnormal section, and the right side is the amount of heat generated from the transformer. Therefore, the transformer can be evaluated as dangerous when the right side is larger than the left side.
C와 r은 변압기에 결정된 고유의 값이며, Tabnormal과 tmove는 가연성 가스의 종류에 따라 정해지는 값으로서 데이터베이스부(140)에 저장된 값이 될 수 있다.C and r are intrinsic values determined in the transformer, and T abnormal and t move may be values stored in the database unit 140 as values determined according to the type of combustible gas.
수학식 1을 부하에서 측정된 전류값에 관하여 정리하면 수학식2와 같다.Equation 1 is summarized as Equation 2 with respect to the current value measured at the load.
[수학식 2][Equation 2]
Figure PCTKR2016006763-appb-I000002
Figure PCTKR2016006763-appb-I000002
수학식2에 따르면, 데이터베이스부(140)에 저장된 Tabnormal, tmove, C 및 r을 이용하여, 부하에서 측정된 전류에 따른 알람의 생성기준이 제시된 것을 알 수 있다.According to Equation 2, using the T abnormal , t move , C and r stored in the database unit 140, it can be seen that the generation criteria of the alarm according to the current measured at the load is presented.
통신부(160)는 3상 전류/전압, 가연성가스의 검출량 및 절연유 온도에 대한 데이터와 알람을 이더넷, 이동통신망, 와이파이, 블루투스 및 무선전파인식 가운데 선택된 어느 하나의 통신망 또는 통신채널을 통하여 상기 입력된 데이터를 외부의 단말기에 전송할 수 있다. 그리고, 통신부(160)는 감시센터(400)와의 데이터 교환을 위해서 IEC 61850, DNP, Modbus 등과 같이 변전소 자동화를 위한 표준에 정의된 프로토콜을 만족하는 형식으로 상기 입력된 데이터를 변환하는 기능을 추가적으로 가질 수 있다.The communication unit 160 inputs data and alarms regarding three-phase current / voltage, flammable gas detection amount, and insulating oil temperature through one of a communication network or a communication channel selected from Ethernet, mobile communication network, Wi-Fi, Bluetooth, and radio wave recognition. Data can be transmitted to an external terminal. In addition, the communication unit 160 may further have a function of converting the input data into a format satisfying a protocol defined in a standard for substation automation such as IEC 61850, DNP, Modbus, etc., for data exchange with the monitoring center 400. Can be.
도 3은 측정된 가연성가스의 검출량으로부터 안전구간, 주의구간 및 비정상구간 가운데 어디 해당하는지 판단하기 위한 기준을 나타낸 표이다. 도 3을 참조하면, 수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 등과 같은 가연성가스의 검출량이 측정되면 안전구간(Normal), 주의구간(Caution), 비정상구간(Abnormal) 중 어디에 해당하는지를 알 수 있다. 실제 예를 들어보면, 500ppm 정도의 수소(H2)가 측정된다면 주의구간(Caution)에 해당한다.FIG. 3 is a table illustrating criteria for determining which of a safety section, a caution section, and an abnormal section correspond to the detected amount of flammable gas. Referring to FIG. 3, hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ), and the like. When the detection amount of the same flammable gas is measured, it is possible to know whether it corresponds to a safety section, a warning section, or an abnormal section. In practical example, if 500 ppm of hydrogen (H 2 ) is measured, it corresponds to Caution.
도 4는 측정된 절연유의 온도에 따른 변압기 사고 발생 가능성을 나타낸 표이다. 가연성가스의 종류에 따라 온도 때문에, 변압기가 오동작하는 확률이 달라진다. 도 4를 참조하면, 수소(H2)의 경우에는 에틸렌(C2H4)에 비해서 온도가 높아졌을 때 오동작의 위험성이 낮은 것을 알 수 있다. 이러한 특성을 수학식1의 tmove에 적용할 수 있으므로, 수소(H2)의 경우에는 에틸렌(C2H4)에 비해서 tmove가 크게 설정될 수 있다.4 is a table showing the probability of transformer accident according to the measured temperature of the insulating oil. Depending on the type of combustible gas, the probability that a transformer malfunctions will vary because of temperature. Referring to FIG. 4, it can be seen that hydrogen (H 2 ) has a lower risk of malfunction when the temperature is higher than that of ethylene (C 2 H 4 ). Because these characteristics can be applied to move the t Equation (1), in the case of hydrogen (H 2), the t move relative to ethylene (C 2 H 4) can be set large.
도 5는 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법에 대한 순서도이다. 도 5를 참조하면, 본 발명의 일 실시예에 따른 실시간 부하감시 및 절연유 열화진단 방법은 a) 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성에 대한 데이터 베이스를 준비하는 단계(S10), b) 상기 스마트 변압기의 절연유에 포함된 가연성가스의 검출량과 상기 절연유의 온도를 측정하는 단계(S20), c) 상기 스마트 변압기의 부하에서 3상 전류/전압을 측정하는 단계(S30), d) 상기 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 상기 데이터베이스부에 저장된 기준에 따라 판단하는 단계(S40) 및 e) 가연성가스의 검출량이 비정상구간에 해당하면 절연유 점검에 대한 알람을 생성하고, 가연성가스의 검출량이 주의구간에 해당하면 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 데이터베이스부에 저장된 가연성가스의 종류에 따른 온도 특성에 근거하여 알람을 생성하는 단계(S50)을 포함할 수 있다. 5 is a flowchart illustrating a real-time load monitoring and insulation oil degradation diagnosis method according to an embodiment of the present invention. 5, the real-time load monitoring and insulation oil degradation diagnostic method according to an embodiment of the present invention a) the criterion and the flammable gas to determine whether the detected amount of flammable gas corresponds to the safety section, attention section and abnormal section Preparing a database for temperature characteristics according to the type (S10), b) measuring the amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil (S20), c) the smart transformer Measuring a three-phase current / voltage at a load of (S30), d) determining whether the detected amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit ( S40) and e) if the detection amount of the flammable gas corresponds to the abnormal section, generates an alarm for the insulating oil check, the detection amount of the flammable gas If the may include a step (S50) of generating an alarm based on the temperature of the insulating oil, the temperature characteristics according to the type of the three-phase current / voltage, and the combustible gas stored in the database unit.
이상은 본 발명의 바람직한 실시 예에 대한 설명이나, 본 발명의 청구범위는 본 명세서에 도시되고 설명된 특정 실시 예에만 한정되지 아니하고, 첨부된 특허 청구의 범위에 기재된 요지를 벗어나지 아니하는 범위 내에서 당해 발명이 속하는 기술분야의 통상적인 지식을 가진 자에 의하여 실시될 수 있는 다양한 변형실시들 까지도 본 청구의 기재에서 고려하고 있는 범위 내에 속한다 할 것이다.The foregoing is a description of preferred embodiments of the present invention, but the claims of the present invention are not limited to the specific embodiments shown and described herein, but do not depart from the spirit of the appended claims. Various modifications that can be carried out by those of ordinary skill in the art will also fall within the scope contemplated by the description of the present invention.
(부호의 설명)(Explanation of the sign)
100: 스마트 변압기100: smart transformer
110: 절연유 열화진단 센서110: insulation oil degradation diagnostic sensor
120: 부하감시 센서120: load monitoring sensor
130: 판단부130: judgment
140: 데이터베이스부140: database unit
150: 알람부150: alarm unit
160: 통신부160: communication unit
200: 통신망200: network
300: 단말기300: terminal
400: 감시센터400: monitoring center

Claims (10)

  1. 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기에 있어서,Smart transformer using real-time load monitoring and insulation oil degradation diagnosis method,
    상기 스마트 변압기의 절연유에 포함된 가연성가스의 검출량과 상기 절연유의 온도를 측정하여 출력하는 절연유 열화진단 센서;Insulating oil degradation diagnostic sensor for measuring and outputting the detection amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil;
    상기 스마트 변압기의 부하에서 3상 전류/전압을 측정하여 출력하는 부하감시 센서;A load monitoring sensor measuring and outputting three-phase current / voltage from the load of the smart transformer;
    측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 온도 특성이 저장된 데이터베이스부;A database unit for storing the temperature characteristics of the combustible gas and a criterion for determining where the detected amount of the combustible gas corresponds to a safety section, a warning section and an abnormal section;
    상기 절연유 열화진단 센서가 측정한 가연성가스의 검출량이 입력되고, 상기 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 상기 데이터베이스부에 저장된 기준에 따라 판단하여 출력하는 판단부; 및The determination unit for inputting the detection amount of the flammable gas measured by the insulation oil degradation diagnostic sensor, and determining whether the measured amount of the flammable gas corresponds to the safety section, attention section and abnormal section according to the criteria stored in the database unit ; And
    상기 절연유의 온도, 상기 3상 전류/전압 및 상기 판단부의 판단이 입력되고, 상기 판단부의 판단이 비정상구간이면 절연유 점검에 대한 알람을 생성하고, 상기 판단부의 판단이 주의구간이면 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 데이터베이스부에 따른 상기 측정된 가연성가스의 온도 특성에 근거하여 상기 알람을 생성하는 알람부;를 포함하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기.The temperature of the insulating oil, the three-phase current / voltage and the determination of the determination unit is input, if the determination of the determination unit is an abnormal section generates an alarm for the insulating oil check, if the determination of the determination unit is a caution section, the temperature of the insulating oil, And an alarm unit generating the alarm based on the three-phase current / voltage and the measured temperature characteristics of the combustible gas according to the database unit. .
  2. 제1 항에 있어서,According to claim 1,
    상기 절연유 열화진단 센서가 검출량을 측정하는 가연성가스는The flammable gas in which the insulation oil degradation diagnostic sensor measures the detected amount is
    수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 가운데 선택된 어느 하나인 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기.It is any one selected from hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ) Smart transformer using real-time load monitoring and insulation oil degradation diagnostic method.
  3. 제1 항에 있어서,According to claim 1,
    상기 알람부는The alarm unit
    상기 판단부의 판단이 주의구간이면, 상기 절연유의 온도와 상기 3상 전류/전압을 기설정된 기간동안 평균한 값에 근거하여 절연유 점검에 대한 알람을 생성하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기.If the judgment of the determination unit is a caution interval, real-time load monitoring and insulation oil degradation diagnosis, characterized in that for generating an alarm for the insulating oil check based on the average value of the insulating oil temperature and the three-phase current / voltage for a predetermined period of time. Smart transformer using the method.
  4. 제1 항에 있어서,According to claim 1,
    상기 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기는The smart transformer using the real-time load monitoring and insulation oil degradation diagnostic method
    상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 이더넷, 이동통신망, 와이파이, 블루투스 및 무선전파인식 가운데 선택된 어느 하나의 통신망 또는 통신채널을 이용하여 외부의 단말기에 전송하는 통신부를 더 포함하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기.Transmitting data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature to an external terminal using any one communication network or communication channel selected from Ethernet, mobile communication network, Wi-Fi, Bluetooth and radio wave recognition Smart transformer using a real-time load monitoring and insulation oil degradation diagnostic method characterized in that it further comprises a communication unit.
  5. 제4 항에 있어서,The method of claim 4, wherein
    상기 통신부는The communication unit
    상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 Modbus, DNP 및 IEC 61850 가운데 선택된 어느 하나와 호환되는 데이터 형식으로 변환하는 기능을 가진 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법을 이용한 스마트 변압기.Real-time load monitoring and insulating oil, characterized in that for converting the data on the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature to a data format compatible with any one selected from Modbus, DNP and IEC 61850 Smart transformer using degradation diagnostic method.
  6. 스마트 변압기에 대한 실시간 부하감시 및 절연유 열화진단 방법에 있어서,In the real-time load monitoring and insulation oil degradation diagnostic method for smart transformer,
    a) 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 가운데 어디에 해당하는지 판단하는 기준과 가연성가스의 종류에 따른 온도 특성에 대한 데이터 베이스를 준비하는 단계;a) preparing a database of temperature characteristics according to the type of combustible gas and a criterion for determining whether the detected amount of flammable gas corresponds to a safety section, a warning section or an abnormal section;
    b) 상기 스마트 변압기의 절연유에 포함된 가연성가스의 검출량과 상기 절연유의 온도를 측정하는 단계;b) measuring the amount of the flammable gas contained in the insulating oil of the smart transformer and the temperature of the insulating oil;
    c) 상기 스마트 변압기의 부하에서 3상 전류/전압을 측정하는 단계;c) measuring three-phase current / voltage at the load of the smart transformer;
    d) 상기 측정된 가연성가스의 검출량이 안전구간, 주의구간 및 비정상구간 중 어디에 해당하는지를 상기 데이터베이스부에 저장된 기준에 따라 판단하는 단계; 및d) determining whether the detected amount of the flammable gas corresponds to a safety section, a warning section or an abnormal section according to a reference stored in the database unit; And
    e) 상기 측정된 가연성가스의 검출량이 비정상구간에 해당하면 절연유 점검에 대한 알람을 생성하고, 주의구간에 해당하면 상기 절연유의 온도, 상기 3상 전류/전압 및 상기 데이터베이스부에 따른 상기 측정된 가연성가스의 온도 특성에 근거하여 알람을 생성하는 단계;를 포함하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법.e) if the measured amount of flammable gas corresponds to an abnormal section, generate an alarm for the insulating oil check; if the measured section corresponds to a caution section, the measured flammability according to the temperature of the insulating oil, the three-phase current / voltage and the database unit Generating an alarm based on the temperature characteristics of the gas; Real-time load monitoring and insulation oil degradation diagnostic method comprising a.
  7. 제6 항에 있어서,The method of claim 6,
    상기 b) 단계의 가연성가스는The combustible gas of step b)
    수소(H2), 아세틸렌(C2H2), 에틸렌(C2H4), 메탄(CH4), 에테인(C2H6), 프로판(C3H8) 가운데 선택된 어느 하나인 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법.It is any one selected from hydrogen (H 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), methane (CH 4 ), ethane (C 2 H 6 ), propane (C 3 H 8 ) Real-time load monitoring and insulation oil degradation diagnostic method.
  8. 제6 항에 있어서,The method of claim 6,
    상기 e)단계에서 가연성가스의 검출량이 주의구간에 해당하면, 상기 절연유의 온도와 상기 3상 전류/전압을 기설정된 기간동안 평균한 값에 근거하여 절연유 점검에 대한 알람을 생성하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법.If the detection amount of the flammable gas in the step e) corresponds to the caution period, generating an alarm for the insulating oil check based on the average value of the temperature and the three-phase current / voltage of the insulating oil for a predetermined period of time Real time load monitoring and insulation oil degradation diagnosis method.
  9. 제6 항에 있어서,The method of claim 6,
    상기 실시간 부하감시 및 절연유 열화진단 방법은The real-time load monitoring and insulation oil degradation diagnosis method
    e) 단계 다음으로e) after step
    f) 상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 이더넷, 이동통신망, 와이파이, 블루투스 및 무선전파인식 가운데 선택된 어느 하나의 통신망 또는 통신채널을 이용하여 외부의 단말기에 전송하는 단계를 더 포함하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법.f) Data of the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature is transmitted to an external terminal using any one communication network or communication channel selected from Ethernet, mobile communication network, Wi-Fi, Bluetooth, and radio wave recognition. Real-time load monitoring and insulation oil degradation diagnostic method further comprising the step of transmitting.
  10. 제9 항에 있어서,The method of claim 9,
    상기 f)단계는Step f)
    상기 3상 전류/전압, 상기 가연성가스의 검출량 및 상기 절연유 온도에 대한 데이터를 Modbus, DNP 및 IEC 61850 가운데 선택된 어느 하나의 데이터 형식으로 변환하여 외부의 단말기에 전송하는 것을 특징으로 하는 실시간 부하감시 및 절연유 열화진단 방법.Real-time load monitoring, characterized in that for converting the data of the three-phase current / voltage, the detection amount of the flammable gas and the insulating oil temperature to any one data format selected from Modbus, DNP and IEC 61850 and transmits to an external terminal; Insulation oil degradation diagnosis method.
PCT/KR2016/006763 2015-06-25 2016-06-24 Real-time load monitoring and insulation oil deterioration diagnosis method and smart transformer using same WO2016209024A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150090281A KR101565554B1 (en) 2015-06-25 2015-06-25 Method for real-time load monitoring and Insulating oil deterioration diagnosis and smart transformer using the same
KR10-2015-0090281 2015-06-25

Publications (1)

Publication Number Publication Date
WO2016209024A1 true WO2016209024A1 (en) 2016-12-29

Family

ID=54599374

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/006763 WO2016209024A1 (en) 2015-06-25 2016-06-24 Real-time load monitoring and insulation oil deterioration diagnosis method and smart transformer using same

Country Status (3)

Country Link
KR (1) KR101565554B1 (en)
CN (1) CN106291158A (en)
WO (1) WO2016209024A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579757A (en) * 2020-05-13 2020-08-25 云南电网有限责任公司电力科学研究院 Cooling device for photoelectric conversion module of online monitoring equipment for dissolved gas in insulating oil
CN114034844B (en) * 2021-11-09 2023-06-02 广东电网有限责任公司 Tracing detection method, medium, electronic equipment and device for insulating oil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100326450B1 (en) * 1999-11-19 2002-02-28 이영우 Auto alarm apparatus by wireless detected current and temperature of transformer
KR100945142B1 (en) * 2009-03-13 2010-03-02 대보전력기술 주식회사 Pad mounted transformer
KR100974860B1 (en) * 2010-05-10 2010-08-11 이명수 Apparatus and method for measuring insulating oil of transformer
KR20110122238A (en) * 2010-05-04 2011-11-10 남창현 Fault diagnosis method and apparatus using headspace gases for transformer
KR20130061524A (en) * 2011-12-01 2013-06-11 한국전력공사 Apparatus for diagnosing state of insulating oil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1484034A (en) * 2002-09-18 2004-03-24 新疆特变电工股份有限公司 On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof
CN101777798A (en) * 2010-02-10 2010-07-14 山东泰开变压器有限公司 Wireless transmission-based transformer online monitoring and manufacturer remote monitoring system
CN202141769U (en) * 2011-07-20 2012-02-08 唐江 On-line monitoring and fault diagnosis system for transformer state
CN103457357B (en) * 2013-09-16 2016-05-04 国家电网公司 A kind of transformer online information management system
CN103513139A (en) * 2013-10-16 2014-01-15 王丽华 Power transformer fault intelligent diagnosis technology, method and device
CN104362736B (en) * 2014-09-17 2017-03-15 特变电工衡阳变压器有限公司 A kind of Intelligent component cabinet and its monitoring method for intelligent transformer
CN104716741B (en) * 2015-02-13 2016-10-26 华东理工大学 Transformer station's remote supervision system and remote monitoring method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100326450B1 (en) * 1999-11-19 2002-02-28 이영우 Auto alarm apparatus by wireless detected current and temperature of transformer
KR100945142B1 (en) * 2009-03-13 2010-03-02 대보전력기술 주식회사 Pad mounted transformer
KR20110122238A (en) * 2010-05-04 2011-11-10 남창현 Fault diagnosis method and apparatus using headspace gases for transformer
KR100974860B1 (en) * 2010-05-10 2010-08-11 이명수 Apparatus and method for measuring insulating oil of transformer
KR20130061524A (en) * 2011-12-01 2013-06-11 한국전력공사 Apparatus for diagnosing state of insulating oil

Also Published As

Publication number Publication date
KR101565554B1 (en) 2015-11-03
CN106291158A (en) 2017-01-04

Similar Documents

Publication Publication Date Title
CN1316714C (en) Transformer substation system
Saponara et al. Predictive diagnosis of high-power transformer faults by networking vibration measuring nodes with integrated signal processing
KR102503525B1 (en) Switch boared monitoring system
KR20200097196A (en) Smart grid distribution transformer
RU2649322C2 (en) Local control system of battery
KR101604110B1 (en) Busbar of switchgear integrated management system by using non contackt type integrated temperature and humidity sensor
EP3030913A1 (en) Monitoring high voltage bushings safely
CN108885234B (en) Adapter for testing electrical devices
KR101213091B1 (en) Distributing board and motor control center, cabinet panel for diagnosing bad connection and disconnection by detection of electromagnetic waves
US20220223020A1 (en) Electric fire prediction monitoring system and the method including the same
US20130335061A1 (en) Systems and Methods for Monitoring Underground Power Lines
WO2016209024A1 (en) Real-time load monitoring and insulation oil deterioration diagnosis method and smart transformer using same
CN211452424U (en) Electrified detecting system based on multiple wireless sensors
WO2020138977A1 (en) Apparatus and method for monitoring performance of network device in wireless communication system
CN104481608B (en) Temperature measuring equipment, whirlpool oar aero-engine and thermometry
KR102219806B1 (en) Method for monitoring a smart switchgear and control panel and the smart switchgear and control panel thereof
CN205231860U (en) Power grid monitoring apparatus
CN205647589U (en) Data on -line measuring network architecture is put in office based on ethernet and cloud
CN202720281U (en) On-line monitoring device for capacitive equipment of transformer substation
CN109085470B (en) Arc light sensing device and equipment health condition judgment method
CN201035732Y (en) Transforming plant power electrical equipment temperature wireless monitoring device
CN211263622U (en) Insulation resistance detection device and system
CN215416884U (en) Power transformer state identification and safety prevention and control system
JP7086034B2 (en) Communication systems and communication devices
CN109000800A (en) The two dimensional code identifier detecting system and method for GIS device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16814737

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16814737

Country of ref document: EP

Kind code of ref document: A1