CN212646846U - Transformer monitoring alarm system - Google Patents
Transformer monitoring alarm system Download PDFInfo
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- CN212646846U CN212646846U CN202021219887.0U CN202021219887U CN212646846U CN 212646846 U CN212646846 U CN 212646846U CN 202021219887 U CN202021219887 U CN 202021219887U CN 212646846 U CN212646846 U CN 212646846U
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- 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
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
- Testing Relating To Insulation (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a transformer monitoring alarm system, which comprises a monitoring sensor group, a data acquisition station and a monitoring analysis station; collecting safety parameter information of a transformer by adopting a monitoring sensor group and uploading the safety parameter information to the monitoring analysis station through the data collection station; the safety parameter information comprises thermal state distribution, corona discharge intensity, contents of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil, grounding leakage current, amplitude, polarity, phase and discharge frequency of a discharge signal, vibration amplitude of a transformer winding, an iron core, an oil pump and a fan, and temperatures of the transformer winding and an oil tank; and the monitoring and analyzing station monitors and alarms the transformer according to the safety parameter information. The utility model discloses a monitoring sensor group gathers the safety parameter information of transformer, makes the utility model discloses the transformer safety key element of monitoring is comprehensive to the precision to transformer fault detection has been improved.
Description
Technical Field
The utility model relates to a transformer monitoring technology field especially relates to a transformer monitoring alarm system.
Background
The transformer is a key device in the power system, and bears the roles of voltage transformation, electric energy distribution and transfer, and the normal operation of the transformer is the guarantee of the safe and reliable operation of the power system. Therefore, it is necessary to minimize or even prevent the occurrence of transformer faults, and it is necessary to introduce an online transformer monitoring system to minimize the occurrence of faults by correctly diagnosing and early predicting the faults.
The traditional transformer online monitoring system usually only monitors the iron core grounding condition of the transformer or the magnetic leakage quantity of the transformer to judge whether the transformer fails, but only adopts the single failure judgment mode, and the problems of transformer failure, missing judgment or erroneous judgment are easy to occur due to few monitored safety elements. Therefore, the traditional transformer online monitoring system has few monitoring safety elements, is easy to generate missing judgment or misjudgment on transformer faults, and has low detection precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transformer monitoring alarm system to the safe key element who solves traditional transformer on-line monitoring system monitoring is few, produces to transformer trouble easily and leaks judgement or misjudgement, detects the problem that the precision is low.
In order to achieve the above object, the utility model provides a following scheme:
a transformer monitoring alarm system comprises a monitoring sensor group, a data acquisition station and a monitoring analysis station;
the monitoring sensor group is used for acquiring safety parameter information of the transformer and uploading the safety parameter information to the data acquisition station; the security parameter information includes: thermal state distribution, corona discharge intensity, content of hydrogen dissolved in transformer oil, content of carbon monoxide dissolved in transformer oil, content of carbon dioxide dissolved in transformer oil, content of methane dissolved in transformer oil, content of acetylene dissolved in transformer oil, content of ethylene dissolved in transformer oil, content of ethane dissolved in transformer oil, grounding leakage current, amplitude of discharge signal, polarity of discharge signal, phase of discharge signal, discharge frequency, vibration amplitude of transformer winding, vibration amplitude of iron core, vibration amplitude of oil pump, vibration amplitude of fan, temperature of transformer winding and temperature of oil tank;
the data acquisition station is used for uploading the safety parameter information to the monitoring analysis station;
and the monitoring and analyzing station is used for sending an alarm to a mobile phone according to the safety parameter information.
Optionally, the monitoring sensor group specifically includes: the device comprises an infrared thermal imager, an ultraviolet imager, a gas-sensitive sensor group, a zero-flux iron core current sensor, an ultrahigh frequency sensor, a resistance type vibration sensor and an optical fiber temperature sensor;
the infrared thermal imager is used for collecting the thermal state distribution of the transformer; the ultraviolet imager is used for acquiring the corona discharge intensity of the transformer; the gas sensor group is used for collecting the content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil; the zero-magnetic-flux iron core current sensor is used for collecting the grounding leakage current of the transformer; the ultrahigh frequency sensor is used for acquiring the amplitude, polarity, phase and discharge frequency of a discharge signal of the transformer; the resistance type vibration sensor is used for acquiring vibration amplitudes of a transformer winding, an iron core, an oil pump and a fan; the optical fiber temperature sensor is used for collecting the temperature of the transformer winding and the temperature of the oil tank.
Optionally, the data acquisition station specifically includes: the device comprises an oil dissolved gas monitoring device, an iron core grounding current monitoring device, a partial discharge monitoring device, a vibration measuring device and a fiber grating temperature measuring device;
the monitoring device for the gas dissolved in the oil is connected with the gas-sensitive sensor group and used for transmitting the content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil to the monitoring and analyzing station; the iron core grounding current monitoring device is connected with the zero-flux iron core current sensor and is used for transmitting the grounding leakage current to the monitoring analysis station; the partial discharge monitoring device is connected with the ultrahigh frequency sensor and is used for sending the amplitude, the polarity, the phase and the discharge times of the discharge signal to the monitoring analysis station; the vibration measuring device is connected with the resistance type vibration sensor and used for sending vibration amplitudes of the transformer winding, the iron core, the oil pump and the fan to the monitoring and analyzing station; the fiber bragg grating temperature measuring device is connected with the fiber temperature sensor and used for sending the temperature of the transformer winding and the temperature of the oil tank to the monitoring and analyzing station.
Optionally, the data acquisition station uploads the security parameter information to the data acquisition station through a switch.
Optionally, the monitoring analysis station includes an edge computing gateway; the edge computing gateway comprises a 4G communication module and a large-capacity storage;
the large-capacity storage is used for storing the safety parameter information; and the edge computing gateway sends an alarm to a mobile phone through the 4G communication module according to the safety parameter information.
Optionally, when the corona discharge intensity exceeds a first threshold, the edge computing gateway sends an alarm to the mobile phone; when the content of carbon monoxide dissolved in the transformer oil exceeds a second threshold value, the edge computing gateway sends an alarm to a mobile phone; when the grounding leakage current exceeds a third threshold value, the edge computing gateway sends an alarm to a mobile phone; when the amplitude of the discharge signal exceeds a fourth threshold value, the edge computing gateway sends an alarm to the mobile phone; when the vibration amplitude of the transformer winding exceeds a fifth threshold value, the edge computing gateway sends an alarm to a mobile phone; and when the temperature of the transformer winding exceeds a sixth threshold value, the edge computing gateway sends an alarm to the mobile phone.
Optionally, the edge computing gateway is configured to send the security parameter information to a monitoring background for a maintenance worker to check in real time.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a transformer monitoring alarm system, which comprises a monitoring sensor group, a data acquisition station and a monitoring analysis station; collecting safety parameter information of a transformer by adopting a monitoring sensor group and uploading the safety parameter information to the monitoring analysis station through the data collection station; the safety parameter information comprises thermal state distribution, corona discharge intensity, contents of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil, grounding leakage current, amplitude, polarity, phase and discharge frequency of a discharge signal, vibration amplitude of a transformer winding, an iron core, an oil pump and a fan, and temperatures of the transformer winding and an oil tank; and the monitoring and analyzing station monitors and alarms the transformer according to the safety parameter information. The utility model discloses a monitoring sensor group gathers the safety parameter information of transformer, makes the utility model discloses the transformer safety key element of monitoring is comprehensive to the precision to transformer fault detection has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is the utility model provides a transformer monitoring alarm system.
Description of the symbols:
the system comprises a monitoring sensor group 1, an infrared thermal imager 1-1, an ultraviolet imager 1-2, a gas-sensitive sensor group 1-3, a zero-flux iron core current sensor 1-4, an ultrahigh frequency sensor 1-5, a resistance type vibration sensor 1-6, an optical fiber temperature sensor 1-7, a data acquisition station 2, an oil dissolved gas monitoring device 2-1, an iron core grounding current monitoring device 2-2, a partial discharge monitoring device 2-3, a vibration measuring device 2-4, an optical fiber grating temperature measuring device 2-5, a monitoring analysis station 3, a large-capacity storage 3-1, an edge computing gateway 3-2 and a 4G communication module 3-3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a transformer monitoring alarm system to the safe key element who solves traditional transformer on-line monitoring system monitoring is few, produces to transformer trouble easily and leaks judgement or misjudgement, detects the problem that the precision is low.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the utility model provides a transformer monitoring alarm system. As shown in fig. 1, a transformer monitoring alarm system includes a monitoring sensor group 1, a data acquisition station 2 and a monitoring analysis station 3;
the monitoring sensor group 1 is used for acquiring safety parameter information of a transformer and uploading the safety parameter information to the data acquisition station 2; the security parameter information includes: thermal state distribution, corona discharge intensity, content of hydrogen dissolved in transformer oil, content of carbon monoxide dissolved in transformer oil, content of carbon dioxide dissolved in transformer oil, content of methane dissolved in transformer oil, content of acetylene dissolved in transformer oil, content of ethylene dissolved in transformer oil, content of ethane dissolved in transformer oil, grounding leakage current, amplitude of discharge signal, polarity of discharge signal, phase of discharge signal, discharge frequency, vibration amplitude of transformer winding, vibration amplitude of iron core, vibration amplitude of oil pump, vibration amplitude of fan, temperature of transformer winding and temperature of oil tank;
the data acquisition station 2 is used for uploading the safety parameter information to the monitoring analysis station 3;
and the monitoring and analyzing station 3 is used for sending an alarm to a mobile phone according to the safety parameter information.
The monitoring sensor group 1 specifically includes: the system comprises an infrared thermal imager 1-1, an ultraviolet imager 1-2, a gas-sensitive sensor group 1-3, a zero-flux iron core current sensor 1-4, an ultrahigh frequency sensor 1-5, a resistance type vibration sensor 1-6 and an optical fiber temperature sensor 1-7; the infrared thermal imager 1-1 is preferably an MR-9000 type, the ultraviolet imager 1-2 is preferably an UV100 solar blind ultraviolet imager, the gas sensor group 1-3 is preferably a TDC type gas sensor group, the zero-flux iron core current sensor 1-4 is preferably a CSA101-P030T01 type zero-flux iron core current sensor, the ultrahigh frequency sensor 1-5 is preferably a PDU-T1 type ultrahigh frequency sensor, and the resistive vibration sensor 1-6 is preferably a JZR-1-200 type resistive vibration sensor; the optical fiber temperature sensors 1-7 are preferably BGK-FBG4700S type optical fiber temperature sensors.
The infrared thermal imager 1-1 is used for collecting the thermal state distribution of the transformer; the ultraviolet imager 1-2 is used for collecting the corona discharge intensity of the transformer; the ultraviolet imager monitors the corona intensity of the high-voltage discharge of the transformer, generally, 1 infrared thermal imager and 1 ultraviolet imager are configured for each transformer, and 1 infrared thermal imager and 1 ultraviolet imager can be configured for a plurality of transformers under the condition of permission. The gas-sensitive sensor groups 1-3 are used for collecting the transformerThe content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the reactor oil; the gas sensor can also be used for rapidly sensing H dissolved in transformer oil2、CO、CO2、CH4、C2H2、C2H4、C2H6The composition and growth rate of (c). The zero-flux iron core current sensors 1-4 are used for collecting grounding leakage current of the transformer, an electric field exists around a winding when the transformer operates normally, metal components such as an iron core, a clamping piece and the like are located in the electric field, the field intensity is different, if the iron core is not reliably grounded, a charging and discharging phenomenon can be generated, and solid and oil insulation of the iron core is damaged. Generally, 1 transformer needs to be equipped. The ultrahigh frequency sensor 1-5 is used for acquiring the amplitude, polarity, phase and discharge frequency of a discharge signal of the transformer; the resistance type vibration sensors 1-6 are used for acquiring vibration amplitudes of a transformer winding, an iron core, an oil pump and a fan, and are mainly used for monitoring vibration conditions of the transformer, and the vibration of the transformer winding, the iron core and accessories such as the oil pump and the fan causes overall vibration, so that the overall vibration characteristics of the transformer are changed when the pressing force of the winding is reduced. The optical fiber temperature sensors 1-7 are used for collecting the temperature of the transformer winding and the temperature of the oil tank. A plurality of fiber optic temperature sensors are typically connected in series for temperature monitoring of a plurality of transformers.
The data acquisition station 2 is composed of various different measuring devices and is mainly responsible for acquiring data of the monitoring sensor group 1 and sending the acquired data to the monitoring analysis station 3; because the output signals of the sensors are different, the sensor signal acquisition circuits of the data acquisition device are also different in design. The frequency of signal acquisition of a dissolved gas monitoring device, an iron core grounding current monitoring device, a partial discharge monitoring device, a vibration measuring device, a fiber grating temperature measuring device and the like in oil is high, a high-performance microprocessor or a digital signal processor is required to be adopted for data acquisition, and an Ethernet interface is adopted as a data uploading interface. The data acquisition station 2 specifically includes: the system comprises an oil dissolved gas monitoring device 2-1, an iron core grounding current monitoring device 2-2, a partial discharge monitoring device 2-3, a vibration measuring device 2-4 and a fiber grating temperature measuring device 2-5; the oil dissolved gas monitoring device 2-1 is preferably an NPM801 oil dissolved gas monitoring device, the iron core grounding current monitoring device 2-2 is preferably an NPM821-TX iron core grounding current monitoring device, the partial discharge monitoring device 2-3 is preferably an NPM802-T partial discharge monitoring device, and the vibration measuring device 2-4 is preferably an NPM961-V vibration measuring device; the fiber bragg grating temperature measuring device 2-5 is preferably an NPM842-FT fiber bragg grating temperature measuring device.
The monitoring device 2-1 for the gas dissolved in the oil is connected with the gas sensor group 1-3, and the monitoring device 2-1 for the gas dissolved in the oil is used for transmitting the content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil to the monitoring and analyzing station 3; the iron core grounding current monitoring device 2-2 is connected with the zero-flux iron core current sensor 1-4, and the iron core grounding current monitoring device 2-2 is used for transmitting the grounding leakage current to the monitoring analysis station 3; the partial discharge monitoring device 2-3 is connected with the ultrahigh frequency sensor 1-5, and the partial discharge monitoring device 2-3 is used for sending the amplitude, the polarity, the phase and the discharge times of the discharge signal to the monitoring analysis station 3; the vibration measuring device 2-4 is connected with the resistance type vibration sensor 1-6, and the vibration measuring device 2-4 is used for sending vibration amplitudes of the transformer winding, the iron core, the oil pump and the fan to the monitoring and analyzing station 3; the fiber bragg grating temperature measuring device 2-5 is connected with the fiber temperature sensor 1-7, and the fiber bragg grating temperature measuring device 2-5 is used for sending the temperature of the transformer winding and the temperature of the oil tank to the monitoring analysis station 3.
And the data acquisition station 2 uploads the safety parameter information to the data acquisition station 2 through a switch.
The monitoring analysis station 3 comprises an edge computing gateway 3-2; the edge computing gateway 3-2 comprises a 4G communication module 3-3 and a large-capacity storage 3-1; the edge computing gateway 3-2 adopts an edge computing gateway with the model of AIR-300. At the core of the monitoring and analyzing station 3 is an edge computing gateway, which needs to have the following functions:
1) rich communication interfaces: at least 2 paths of 100M Ethernet ports, wherein 1 path is used for system configuration and communication with a standby background, and the other path is communicated with a measuring device of the Ethernet port; at least 1 way 4G communication module is used for propelling movement alarm information.
2) The rich protocol library supports: modbus TCP is adopted by default to communicate with the measuring device, and Modbus TCP or IEC61850 protocol is adopted to communicate with the background.
3) Powerful computing power: the data acquisition device is used for calculating and analyzing the data sent by each data acquisition device;
certain storage capacity: the edge computing gateway needs to store the collected data for at least 1 month so that the historical data can be exported and analyzed after a fault occurs. The edge computing gateway communicates with the mobile phone through the 4G communication module 3-3. By deploying the edge computing gateway in the field, a user can manage the monitoring system through a mobile phone without an additional server, and the alarm information pushed by the system can be obtained at the first time. The edge computing gateway has rich communication interfaces, can be connected with various sensor measuring devices supporting standard protocols, and realizes the modularization of data acquisition. The monitoring system can be matched with various types of monitoring sensors according to the type of the motor and the actual field requirements, and various monitoring elements can be accessed into the system as required.
The large-capacity storage 3-1 is used for storing the safety parameter information; and the edge computing gateway 3-2 sends an alarm to a mobile phone through the 4G communication module 3-3 according to the security parameter information. The edge computing gateway 3-2 is also connected with the controlled equipment through an isolation DO; the controlled equipment is an audible and visual alarm; and the edge computing gateway 3-2 controls the controlled equipment to send out an alarm according to the safety parameter information.
When the corona discharge intensity exceeds a first threshold value, the edge computing gateway 3-2 sends an alarm to a mobile phone; when the content of carbon monoxide dissolved in the transformer oil exceeds a second threshold value, the edge computing gateway 3-2 sends an alarm to a mobile phone; when the grounding leakage current exceeds a third threshold value, the edge computing gateway 3-2 sends an alarm to a mobile phone; when the amplitude of the discharge signal exceeds a fourth threshold, the edge computing gateway 3-2 sends an alarm to the mobile phone; when the vibration amplitude of the transformer winding exceeds a fifth threshold value, the edge computing gateway 3-2 sends an alarm to a mobile phone; and when the temperature of the transformer winding exceeds a sixth threshold value, the edge computing gateway 3-2 sends an alarm to the mobile phone.
The edge computing gateway 3-2 is used for sending the safety parameter information to the monitoring background for being checked by maintenance personnel in real time, and the maintenance personnel can check the state of the transformer according to the safety parameter information displayed by the monitoring background for realizing the judgment of the fault reason of the transformer.
The utility model discloses a transformer monitoring alarm system, including monitoring sensor group, data acquisition station and monitoring analysis station. The system mainly comprises various monitoring sensors, a data monitoring device, a switch, a monitoring analysis station, a monitoring background and a monitoring mobile phone; the monitoring sensor group mainly converts the monitored quantity on the transformer into a measurable electric signal and mainly comprises a gas-sensitive sensor group, a zero-flux iron wire current sensor, an ultrahigh frequency sensor, a resistance type vibration sensor and an optical fiber temperature sensor. The data acquisition station is composed of various data measurement devices with different measurement principles to form an electrical cabinet, and is mainly responsible for acquiring electrical signals of various monitoring sensors in a digitalized manner, and sending the electrical signals to the monitoring analysis station through the Ethernet, and under the condition that the number of network ports of the monitoring station is not enough, a switch is required to be adopted for data forwarding. The data measuring device comprises a device for monitoring dissolved gas in oil, a device for monitoring iron core grounding current, a device for monitoring partial discharge, a vibration measuring device and a fiber grating measuring device. The monitoring sensor is connected with the measuring device by a special sensor cable. The monitoring and analyzing station is used for summarizing data of each data acquisition device in the data acquisition station and sending an alarm to the mobile phone through the built-in edge computing gateway according to the acquired data. And when monitoring information exists in the monitoring and analyzing station, the safety parameter information is sent to the monitoring background through the network port in situ. The utility model discloses a monitoring sensor group gathers the safety parameter information of transformer, makes the utility model discloses the transformer safety key element of monitoring is comprehensive to the precision to transformer fault detection has been improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A transformer monitoring alarm system is characterized by comprising a monitoring sensor group, a data acquisition station and a monitoring analysis station;
the monitoring sensor group is used for acquiring safety parameter information of the transformer and uploading the safety parameter information to the data acquisition station; the security parameter information includes: thermal state distribution, corona discharge intensity, content of hydrogen dissolved in transformer oil, content of carbon monoxide dissolved in transformer oil, content of carbon dioxide dissolved in transformer oil, content of methane dissolved in transformer oil, content of acetylene dissolved in transformer oil, content of ethylene dissolved in transformer oil, content of ethane dissolved in transformer oil, grounding leakage current, amplitude of discharge signal, polarity of discharge signal, phase of discharge signal, discharge frequency, vibration amplitude of transformer winding, vibration amplitude of iron core, vibration amplitude of oil pump, vibration amplitude of fan, temperature of transformer winding and temperature of oil tank;
the data acquisition station is used for uploading the safety parameter information to the monitoring analysis station;
and the monitoring and analyzing station is used for sending an alarm to a mobile phone according to the safety parameter information.
2. The transformer monitoring alarm system of claim 1, wherein the monitoring sensor group specifically comprises: the device comprises an infrared thermal imager, an ultraviolet imager, a gas-sensitive sensor group, a zero-flux iron core current sensor, an ultrahigh frequency sensor, a resistance type vibration sensor and an optical fiber temperature sensor;
the infrared thermal imager is used for collecting the thermal state distribution of the transformer; the ultraviolet imager is used for acquiring the corona discharge intensity of the transformer; the gas sensor group is used for collecting the content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil; the zero-magnetic-flux iron core current sensor is used for collecting the grounding leakage current of the transformer; the ultrahigh frequency sensor is used for acquiring the amplitude, polarity, phase and discharge frequency of a discharge signal of the transformer; the resistance type vibration sensor is used for acquiring vibration amplitudes of a transformer winding, an iron core, an oil pump and a fan; the optical fiber temperature sensor is used for collecting the temperature of the transformer winding and the temperature of the oil tank.
3. The transformer monitoring alarm system of claim 2, wherein the data acquisition station specifically comprises: the device comprises an oil dissolved gas monitoring device, an iron core grounding current monitoring device, a partial discharge monitoring device, a vibration measuring device and a fiber grating temperature measuring device;
the monitoring device for the gas dissolved in the oil is connected with the gas-sensitive sensor group and used for transmitting the content of hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane dissolved in the transformer oil to the monitoring and analyzing station; the iron core grounding current monitoring device is connected with the zero-flux iron core current sensor and is used for transmitting the grounding leakage current to the monitoring analysis station; the partial discharge monitoring device is connected with the ultrahigh frequency sensor and is used for sending the amplitude, the polarity, the phase and the discharge times of the discharge signal to the monitoring analysis station; the vibration measuring device is connected with the resistance type vibration sensor and used for sending vibration amplitudes of the transformer winding, the iron core, the oil pump and the fan to the monitoring and analyzing station; the fiber bragg grating temperature measuring device is connected with the fiber temperature sensor and used for sending the temperature of the transformer winding and the temperature of the oil tank to the monitoring and analyzing station.
4. The transformer monitoring alarm system of claim 1, wherein the data collection station uploads the safety parameter information to the data collection station via a switch.
5. The transformer monitoring alarm system of claim 1, wherein the monitoring analysis station comprises an edge computing gateway; the edge computing gateway comprises a 4G communication module and a large-capacity storage;
the large-capacity storage is used for storing the safety parameter information; and the edge computing gateway sends an alarm to a mobile phone through the 4G communication module according to the safety parameter information.
6. The transformer monitoring alarm system of claim 5, wherein the edge computing gateway sends an alert to a cell phone when the corona discharge intensity exceeds a first threshold; when the content of carbon monoxide dissolved in the transformer oil exceeds a second threshold value, the edge computing gateway sends an alarm to a mobile phone; when the grounding leakage current exceeds a third threshold value, the edge computing gateway sends an alarm to a mobile phone; when the amplitude of the discharge signal exceeds a fourth threshold value, the edge computing gateway sends an alarm to the mobile phone; when the vibration amplitude of the transformer winding exceeds a fifth threshold value, the edge computing gateway sends an alarm to a mobile phone; and when the temperature of the transformer winding exceeds a sixth threshold value, the edge computing gateway sends an alarm to the mobile phone.
7. The transformer monitoring alarm system of claim 5, wherein the edge computing gateway is configured to send the security parameter information to a monitoring backend for real-time viewing by a maintenance person.
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| CN202021219887.0U CN212646846U (en) | 2020-06-28 | 2020-06-28 | Transformer monitoring alarm system |
| PCT/CN2020/104064 WO2022000640A1 (en) | 2020-06-28 | 2020-07-24 | Monitoring and alarm system for transformer |
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| CN202021219887.0U CN212646846U (en) | 2020-06-28 | 2020-06-28 | Transformer monitoring alarm system |
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Cited By (3)
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| CN113390461A (en) * | 2021-06-04 | 2021-09-14 | 广西电网有限责任公司北海供电局 | Transformer dynamic capacity increasing system based on transformer monitoring |
| CN113945838A (en) * | 2021-10-21 | 2022-01-18 | 国电青山热电有限公司 | Online transformer and booster station intelligent monitoring method and system |
| CN114492636A (en) * | 2022-01-26 | 2022-05-13 | 上海交通大学 | Transformer winding state signal acquisition system |
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| CN114609267A (en) * | 2022-01-26 | 2022-06-10 | 国网江苏省电力有限公司电力科学研究院 | Analysis device and method for dissolved gas in oil for effectively reducing environmental errors |
| CN114531619A (en) * | 2022-02-15 | 2022-05-24 | 广州伏羲智能科技有限公司 | Construction site monitoring method and system based on edge calculation |
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| EP1786083A1 (en) * | 2005-11-15 | 2007-05-16 | Union Fenosa Distribucion, S.A. | Method and system for monitoring power transformers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390461A (en) * | 2021-06-04 | 2021-09-14 | 广西电网有限责任公司北海供电局 | Transformer dynamic capacity increasing system based on transformer monitoring |
| CN113945838A (en) * | 2021-10-21 | 2022-01-18 | 国电青山热电有限公司 | Online transformer and booster station intelligent monitoring method and system |
| CN114492636A (en) * | 2022-01-26 | 2022-05-13 | 上海交通大学 | Transformer winding state signal acquisition system |
| CN114492636B (en) * | 2022-01-26 | 2023-11-24 | 上海交通大学 | Transformer winding state signal acquisition system |
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| WO2022000640A1 (en) | 2022-01-06 |
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