CN113124922A - Method for monitoring running state of non-electric-quantity multi-physical-quantity synchronous measurement electrical equipment - Google Patents
Method for monitoring running state of non-electric-quantity multi-physical-quantity synchronous measurement electrical equipment Download PDFInfo
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- CN113124922A CN113124922A CN201911392679.2A CN201911392679A CN113124922A CN 113124922 A CN113124922 A CN 113124922A CN 201911392679 A CN201911392679 A CN 201911392679A CN 113124922 A CN113124922 A CN 113124922A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 title claims description 4
- 230000001360 synchronised effect Effects 0.000 title claims description 3
- 230000007935 neutral effect Effects 0.000 claims abstract description 22
- 238000012805 post-processing Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- General Physics & Mathematics (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention provides a method for monitoring the running state of electrical equipment for synchronously measuring non-electric quantity and multiple physical quantities, which is used for detecting the running state of the electrical equipment and comprises the following steps: step 1, collecting vibration data, temperature data, noise data and neutral point current data or load current data of electrical equipment, and converting the vibration data, the temperature data, the noise data and the neutral point current data or the load current data into current signals or voltage signals; and 2, synchronously acquiring vibration data, temperature data, noise data and neutral point current data or current signals or voltage signals obtained after load current data conversion through a signal acquisition instrument, uploading the acquired data to a computer for data post-processing, performing real-time coupling on non-electric quantity and multiple physical quantities, and finishing detection and judgment on the running state of the electrical equipment.
Description
Technical Field
The invention relates to a method for monitoring the running state of electrical equipment, in particular to a method for monitoring the running state of electrical equipment by synchronously measuring non-electric quantity and multiple physical quantities.
Background
At present, electrical equipment is widely applied to a power grid system, for example, a motor and a transformer play roles in power production and transmission, but no practical and effective method exists for detecting the live running state and diagnosing faults of the electrical equipment, each parameter of each electrical equipment has a measurement standard according to national standards, but the parameters are single parameter non-coupling, and the real-time synchronism cannot be met in subsequent analysis, so that the accuracy of analyzing the running state of the electrical equipment cannot be guaranteed.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for monitoring an operating state of an electrical device, which is capable of synchronously measuring a plurality of non-electrical quantities and physical quantities.
The invention provides a method for monitoring the running state of electrical equipment by synchronously measuring non-electric quantity and multiple physical quantities, which is used for detecting the running state of the electrical equipment and is characterized by comprising the following steps: step 1, collecting vibration data of electrical equipment and converting the vibration data into a first current signal or a first voltage signal, collecting temperature data of the electrical equipment and converting the temperature data into a second current signal or a second voltage signal, collecting noise data of the electrical equipment and converting the noise data into a third current signal or a third voltage signal, collecting neutral point current data or load current data of the electrical equipment and converting the neutral point current data or the load current data into a fourth current signal or a fourth voltage signal;
and 2, synchronously acquiring a first current signal or a first voltage signal, a second current signal or a second voltage signal, a third current signal or a third voltage signal and a fourth current signal or a fourth voltage signal through a signal acquisition instrument, uploading the acquired data to a computer for data post-processing, performing real-time coupling on the non-electricity-quantity multi-physical quantity, and completing detection and judgment of the operation state of the electrical equipment.
The method for monitoring the running state of the electrical equipment for synchronously measuring the non-electric quantity and the multiple physical quantities, provided by the invention, can also have the following characteristics: the vibration data are collected by a vibration sensor, and the vibration data are converted into a first current signal or a first voltage signal through the vibration sensor.
The method for monitoring the running state of the electrical equipment for synchronously measuring the non-electric quantity and the multiple physical quantities, provided by the invention, can also have the following characteristics: and the temperature data is collected by adopting a thermocouple, and the vibration data is converted into a second current signal or a second voltage signal through the thermocouple.
The method for monitoring the running state of the electrical equipment for synchronously measuring the non-electric quantity and the multiple physical quantities, provided by the invention, can also have the following characteristics: the noise data is collected by a noise detector, and is converted into a third current signal or a third voltage signal by the noise detector.
The method for monitoring the running state of the electrical equipment for synchronously measuring the non-electric quantity and the multiple physical quantities, provided by the invention, can also have the following characteristics: and collecting the neutral point current data or the load current data by adopting an alternating current and direct current coil, and converting the current data into a fourth current signal or a fourth voltage signal.
Action and Effect of the invention
According to the method for monitoring the running state of the electric equipment for synchronously measuring the non-electric quantity and the multiple physical quantities, because the vibration data, the noise data, the temperature data and the neutral point current data or the load current data are collected and uniformly converted into the current signals or the voltage signals, and the converted current signals or the converted voltage signals are synchronously collected by the signal collector, meanwhile, the current data of the neutral point or the current data of the load are used as reference to ensure real-time synchronism, therefore, the real-time synchronism of the multiple physical measurement parameters can be ensured, the real-time coupling of the non-electric quantity and the multiple physical quantities is realized, the real-time synchronism among vibration data, noise data and temperature data which are obtained by correspondingly converting current signals or voltage signals during data post-processing is ensured, and the operating state or faults of the electrical equipment can be judged and analyzed more accurately and rapidly.
Drawings
Fig. 1 is a flowchart of an operating state monitoring method for an electrical device for synchronously measuring a plurality of non-electric quantities and physical quantities in an embodiment of the present invention;
fig. 2 is a schematic diagram of the acquisition results of neutral point current data and vibration data in an embodiment of the present invention.
Detailed Description
In order to make the technical means and functions of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the accompanying drawings.
Fig. 1 is a flowchart of an electrical device operation state monitoring method for synchronously measuring a plurality of non-electrical quantities and physical quantities in an embodiment of the present invention.
As shown in fig. 1, the present embodiment provides an electrical device operating state monitoring method for synchronously measuring a plurality of non-electric quantities and physical quantities, which is used for detecting an operating state of an electrical device, and includes the following steps:
step 1, collecting vibration data of the electrical equipment and converting the vibration data into a first current signal or a first voltage signal, collecting temperature data of the electrical equipment and converting the temperature data into a second current signal or a second voltage signal, collecting noise data of the electrical equipment and converting the noise data into a third current signal or a third voltage signal, collecting neutral point current data or load current data of the electrical equipment and converting the neutral point current data or the load current data into a fourth current signal or a fourth voltage signal.
The vibration data is collected by a vibration sensor, and the vibration data is converted into a first current signal or a first voltage signal through the vibration sensor.
In this embodiment, the vibration sensor is a piezoelectric vibration sensor.
And collecting temperature data by using a thermocouple, and converting the vibration data into a second current signal or a second voltage signal through the thermocouple.
The noise data is collected by a noise detector, and the noise data is converted into a third current signal or a third voltage signal by the noise detector.
And collecting neutral point current data or load current data by adopting an alternating current-direct current coil, and converting the current data into a fourth current signal or a fourth voltage signal.
And 2, synchronously acquiring the first current signal or the first voltage signal, the second current signal or the second voltage signal, the third current signal or the third voltage signal and the fourth current signal or the fourth voltage signal through a signal acquisition instrument, uploading acquired data to a computer for data post-processing, performing real-time coupling on non-electric quantity and multiple physical quantities, and finishing detection and judgment on the running state of the electrical equipment.
When the computer processes the data post-processing, the first current signal or the first voltage signal is converted into vibration data, the second current signal or the second voltage signal is converted into temperature data, the third current signal or the third voltage signal is converted into noise data, namely the signal unit is correspondingly converted into m/s from mV or mA2DEG C or dB.
The neutral point current data or the load current data are used as reference standards for synchronously acquiring vibration data, temperature data and noise data, so that the real-time synchronism of the vibration data, the temperature data and the noise data acquisition is ensured.
The embodiment collects the current data and the vibration data of the neutral point through the AC/DC coil and the vibration sensor and converts the current data and the vibration data into voltage signals, synchronously collects the voltage signals through the signal collector, processes the collected data in the computer,
fig. 2 is a schematic diagram of the acquisition results of neutral point current data and vibration data in an embodiment of the present invention.
As shown in FIG. 2, the voltage signal corresponding to the vibration data has converted the unit from mV to m/s2On the other hand, the voltage signal corresponding to the neutral point current data serving as the reference is still in mV units, and it is necessary to perform the scaling by the data post-processing.
Effects and effects of the embodiments
According to the method for monitoring the operating state of the electrical equipment for synchronously measuring the non-electric quantity and the physical quantity in the embodiment, because the vibration data, the noise data, the temperature data and the neutral point current data or the load current data are collected and uniformly converted into the current signals or the voltage signals, and the converted current signals or the converted voltage signals are synchronously collected by the signal collector, meanwhile, the current data of the neutral point or the current data of the load are used as reference to ensure real-time synchronism, therefore, the real-time synchronism of the multiple physical measurement parameters can be ensured, the real-time coupling of the non-electric quantity and the multiple physical quantities is realized, the real-time synchronism among vibration data, noise data and temperature data which are obtained by correspondingly converting current signals or voltage signals during data post-processing is ensured, and the operating state or faults of the electrical equipment can be judged and analyzed more accurately and rapidly.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (5)
1. A non-electric quantity multi-physical quantity synchronous measurement electrical equipment operation state monitoring method is used for detecting the operation state of electrical equipment, and is characterized by comprising the following steps:
step 1, collecting vibration data of the electrical equipment and converting the vibration data into a first current signal or a first voltage signal, collecting temperature data of the electrical equipment and converting the temperature data into a second current signal or a second voltage signal, collecting noise data of the electrical equipment and converting the noise data into a third current signal or a third voltage signal, collecting neutral point current data or load current data of the electrical equipment and converting the neutral point current data or the load current data into a fourth current signal or a fourth voltage signal;
step 2, synchronously acquiring the first current signal or the first voltage signal, the second current signal or the second voltage signal, the third current signal or the third voltage signal and the fourth current signal or the fourth voltage signal through a signal acquisition instrument, uploading the acquired data to a computer for data post-processing, performing real-time coupling on non-electric quantity and multiple physical quantities, and completing detection and judgment on the running state of the electrical equipment,
wherein, when the computer processes data post-processing, the first current signal or the first voltage signal is converted into the vibration data, the second current signal or the second voltage signal is converted into the temperature data, and the third current signal or the third voltage signal is converted into noise data,
the neutral point current data or the load current data are reference standards for synchronously acquiring the vibration data, the temperature data and the noise data.
2. The method for monitoring the operating state of the electrical equipment for synchronously measuring the non-electric quantity and the physical quantity according to claim 1, wherein the method comprises the following steps:
the vibration data are collected by a vibration sensor, and are converted into a first current signal or a first voltage signal through the vibration sensor.
3. The method for monitoring the operating state of the electrical equipment for synchronously measuring the non-electric quantity and the physical quantity according to claim 1, wherein the method comprises the following steps:
and collecting the temperature data by adopting a thermocouple, and converting the vibration data into a second current signal or a second voltage signal through the thermocouple.
4. The method for monitoring the operating state of the electrical equipment for synchronously measuring the non-electric quantity and the physical quantity according to claim 1, wherein the method comprises the following steps:
the noise data are collected by a noise detector, and are converted into a third current signal or a third voltage signal by the noise detector.
5. The method for monitoring the operating state of the electrical equipment for synchronously measuring the non-electric quantity and the physical quantity according to claim 1, wherein the method comprises the following steps:
and collecting the neutral point current data or the load current data by adopting an alternating current and direct current coil, and converting the current data into a fourth current signal or a fourth voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392679.2A CN113124922A (en) | 2019-12-30 | 2019-12-30 | Method for monitoring running state of non-electric-quantity multi-physical-quantity synchronous measurement electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392679.2A CN113124922A (en) | 2019-12-30 | 2019-12-30 | Method for monitoring running state of non-electric-quantity multi-physical-quantity synchronous measurement electrical equipment |
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| CN113124922A true CN113124922A (en) | 2021-07-16 |
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| CN201911392679.2A Pending CN113124922A (en) | 2019-12-30 | 2019-12-30 | Method for monitoring running state of non-electric-quantity multi-physical-quantity synchronous measurement electrical equipment |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520240A (en) * | 2012-01-05 | 2012-06-27 | 山东电力研究院 | Magnetic bias current monitoring and early-warning system for large-scale transformer |
| CN103713210A (en) * | 2013-11-01 | 2014-04-09 | 天津工业大学 | Dry power transformer monitoring and diagnosis system |
| CN103925983A (en) * | 2014-05-05 | 2014-07-16 | 重庆大学 | Multi-channel weak vibration signal synchronous acquisition device and analysis method |
| CN205027836U (en) * | 2015-10-08 | 2016-02-10 | 国家电网公司 | Dc magnetic biasing synchronous detection system |
| CN105353200A (en) * | 2015-12-10 | 2016-02-24 | 国网四川省电力公司电力科学研究院 | On-line monitoring system for DC magnetic bias current of transformer |
| CN105606933A (en) * | 2016-01-13 | 2016-05-25 | 中国南方电网有限责任公司超高压输电公司 | Vibration-noise-based on-line monitoring system of converter transformer |
| CN206594237U (en) * | 2017-03-21 | 2017-10-27 | 国网上海市电力公司 | Transformer DC magnetic bias monitoring system based on vibration, noise and neutral point current |
| CN110261665A (en) * | 2019-07-31 | 2019-09-20 | 国网信息通信产业集团有限公司 | Transformer DC magnetic bias on-line monitoring system |
-
2019
- 2019-12-30 CN CN201911392679.2A patent/CN113124922A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520240A (en) * | 2012-01-05 | 2012-06-27 | 山东电力研究院 | Magnetic bias current monitoring and early-warning system for large-scale transformer |
| CN103713210A (en) * | 2013-11-01 | 2014-04-09 | 天津工业大学 | Dry power transformer monitoring and diagnosis system |
| CN103925983A (en) * | 2014-05-05 | 2014-07-16 | 重庆大学 | Multi-channel weak vibration signal synchronous acquisition device and analysis method |
| CN205027836U (en) * | 2015-10-08 | 2016-02-10 | 国家电网公司 | Dc magnetic biasing synchronous detection system |
| CN105353200A (en) * | 2015-12-10 | 2016-02-24 | 国网四川省电力公司电力科学研究院 | On-line monitoring system for DC magnetic bias current of transformer |
| CN105606933A (en) * | 2016-01-13 | 2016-05-25 | 中国南方电网有限责任公司超高压输电公司 | Vibration-noise-based on-line monitoring system of converter transformer |
| CN206594237U (en) * | 2017-03-21 | 2017-10-27 | 国网上海市电力公司 | Transformer DC magnetic bias monitoring system based on vibration, noise and neutral point current |
| CN110261665A (en) * | 2019-07-31 | 2019-09-20 | 国网信息通信产业集团有限公司 | Transformer DC magnetic bias on-line monitoring system |
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Application publication date: 20210716 |