CN115728695A - Transformer comprehensive monitoring intelligent diagnostic instrument inspection device and method - Google Patents
Transformer comprehensive monitoring intelligent diagnostic instrument inspection device and method Download PDFInfo
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- CN115728695A CN115728695A CN202211437051.1A CN202211437051A CN115728695A CN 115728695 A CN115728695 A CN 115728695A CN 202211437051 A CN202211437051 A CN 202211437051A CN 115728695 A CN115728695 A CN 115728695A
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Abstract
The invention discloses a transformer comprehensive monitoring intelligent diagnostic instrument checking device and a method. The detection method comprises normal state sampling rate detection, alarm state fault signal interface sampling multiple detection, fault type identification and alarm. The invention simulates the simultaneous working state of a plurality of sensors on the site of the transformer multidimensional comprehensive monitoring intelligent diagnostic instrument, realizes the detection of the performance parameters of the host and the sensor signal receiving and processing module of the transformer multidimensional comprehensive monitoring intelligent diagnostic instrument system, and improves the reliability and the accuracy of the instrument and measuring instrument.
Description
Technical Field
The invention relates to the field of transformer online monitoring, in particular to a device and a method for testing a transformer multi-dimensional comprehensive monitoring intelligent diagnostic instrument.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
With the more mature construction of the intelligent transformer substation of the state network company, the inspection technology of the intelligent high-voltage equipment is widely applied, and the implementation system of the intelligent transformer substation is jointly formed by the multidimensional comprehensive monitoring intelligent diagnostic instrument of the transformer, the information technology, the sensor technology and the achievement of many other aspects. By means of the sensor and the information technology, the transformer multidimensional comprehensive monitoring intelligent diagnostic instrument can clearly know the real-time work and the running condition of equipment, the workload of operation and maintenance personnel is reduced, the real-time online monitoring of the equipment state is realized, the reliability of the equipment state monitoring is enhanced, and a reliable basis is provided for the current operation and maintenance.
The transformer multi-dimensional comprehensive monitoring intelligent diagnostic instrument mainly comprises three parts, namely various sensors, a sensor signal receiving and processing module and a system host. The sensors are responsible for acquiring various state parameters of the transformer on site, then converting the state parameters into electric signals and transmitting the electric signals to the sensor signal receiving and processing module, and finally, the sensor signal receiving and processing module transmits data processing results to the system host.
At present, the development of intelligent diagnostic instruments still belongs to the primary stage, the quality of instrument products is uneven, the development of related calibration technical standards of the intelligent diagnostic instruments is relatively lagged, related calibration devices and methods only aim at various sensors such as ultrahigh frequency partial discharge sensors, ultrasonic partial discharge sensors, high frequency partial discharge sensors and iron core grounding current sensors used in the intelligent diagnostic instruments, and relatively few researches are made on calibration devices and methods of key performance parameters such as data sampling rate, fault identification and alarm of a sensor signal receiving and processing module and a system host of the intelligent diagnostic instruments, so that the overall performance parameters of the intelligent diagnostic instruments are difficult to effectively evaluate.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a device and a method for testing a transformer multi-dimensional comprehensive monitoring intelligent diagnostic instrument, which are used for realizing data sampling rate, alarm state fault signal interface sampling multiple, fault type identification and alarm test of a sensor signal receiving and processing module and a system host of the intelligent diagnostic instrument.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: the utility model provides a transformer integrated monitoring intelligent diagnosis instrument verifying attachment, including standard signal emission module, simulation fault signal module and system main control module, standard signal emission module, simulation fault signal module all links to each other with system main control module, system main control module control standard signal emission module transmits the signal of telecommunication of simulation diagnosis instrument sensor, the signal of telecommunication that sends when system main control module control simulation fault signal module transmission simulation diagnosis instrument sensor received all kinds of trouble, standard signal emission module, the signal of telecommunication that simulation fault signal module sent transmits to diagnostic apparatus, thereby the performance of correction diagnostic apparatus.
Furthermore, the standard signal transmitting module comprises N ultrahigh frequency partial discharge signal transmitting units, N ultrasonic partial discharge signal transmitting units, N high frequency partial discharge signal transmitting units, N iron core grounding current signal transmitting units, N vibration signal transmitting units and N infrared signal transmitting units, wherein N is a natural number.
Furthermore, the analog fault signal module comprises an ultrahigh frequency partial discharge fault signal unit, an ultrasonic partial discharge fault signal unit, a high frequency partial discharge fault signal unit, an iron core grounding current fault signal unit, a vibration fault signal unit and an infrared temperature fault signal unit.
Furthermore, the system main control module controls all signal transmitting units of the standard signal transmitting module, and controls one or more transmitting units to transmit ultrahigh frequency partial discharge signals, ultrasonic partial discharge signals, high frequency partial discharge signals, iron core grounding current signals, vibration signals and infrared signals.
Furthermore, the system main control module controls the simulation fault signal module to transmit a single or a plurality of ultrahigh frequency partial discharge fault signals, ultrasonic partial discharge fault signals, high frequency partial discharge fault signals, iron core grounding current fault signals, vibration signal fault signals and infrared fault signals.
The invention also discloses a method for testing the transformer comprehensive monitoring intelligent diagnostic instrument, which is based on the testing device and realizes the normal state sampling rate testing, and the testing method comprises the following steps:
the system includes a standard signal emitting module, a super high frequency partial discharge signal emitting unit, an ultrasonic partial discharge signal emitting unit, a high frequency partial discharge signal emitting unit, an iron core grounding current signal emitting unit, a vibration signal emitting unit, an infrared signal emitting unit, a standard signal emitting module, a system main control module and a standard signal emitting moduleNumber m of received standard signals 1 、m 2 、m 3 ...m i And the sampling rate of each interface in the normal state is as follows:
the invention also discloses a transformer comprehensive monitoring intelligent diagnostic instrument checking method, which is based on the checking device to realize the sampling multiple checking of the fault signal interface in the alarm state, and the checking method comprises the following steps:
selecting a fault signal unit in the simulated fault signal module to be connected with a corresponding interface of the intelligent diagnostic instrument to be detected, and connecting other interfaces of the intelligent diagnostic instrument with the standard signal transmitting module; firstly, a system main control module controls a simulation fault signal module to send out a corresponding fault signal, so that an intelligent diagnostic instrument identifies the type of the fault signal and displays an alarm state; then, in a set time t, the fault signal unit emits continuous fault signals and reads the number m 'of the fault signals received by the interface corresponding to the intelligent diagnostic equipment host' error The sampling rate of the alarm state fault signal interface is as follows:
each connected signal transmitting unit of the standard signal transmitting module transmits continuous standard signals, and the number m 'of the standard signals received by each interface except the fault signal interface of the intelligent diagnostic instrument is read respectively' 1 、m′ 2 、m 3 ′...m′ j And the sampling rate of each interface in the alarm state is as follows:
taking the average value of the sampling rates of other interfaces except the fault signal interface:
then the interface alarm state sampling multiple may be obtained:
the invention also discloses a transformer comprehensive monitoring intelligent diagnostic instrument checking method, which is based on the checking device to realize fault type identification and alarm, and the checking process is as follows:
the simulation fault signal module is connected with the corresponding interface of the intelligent diagnostic instrument to be tested, the system main control module controls the simulation fault signal module to send out one or more fault signals, and observes whether the intelligent diagnostic instrument can identify one or more fault signal types and sends out correct alarm signals.
The invention has the beneficial effects that: the invention utilizes the transformer multidimensional comprehensive monitoring intelligent diagnostic instrument checking device to simulate the simultaneous working state of a plurality of sensors on the site of the transformer multidimensional comprehensive monitoring intelligent diagnostic instrument to the maximum extent, realizes the sampling rate of a sensor signal receiving and processing module of the intelligent diagnostic instrument and a system host, the sampling multiple of a fault signal interface in an alarm state, fault identification and alarm performance parameter checking, and improves the reliability and the accuracy of the measuring result of the instrument.
Drawings
FIG. 1 is a schematic block diagram of an inspection apparatus according to an embodiment.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1
The embodiment discloses a transformer integrated monitoring intelligent diagnostic instrument verifying attachment, as shown in figure 1, including standard signal transmitting module, simulation fault signal module and system main control module, standard signal transmitting module, simulation fault signal module all links to each other with system main control module, system main control module control standard signal transmitting module transmits the signal of telecommunication of simulation diagnostic instrument sensor, system main control module control simulation fault signal module transmits the signal of telecommunication that sends when simulation diagnostic instrument sensor receives all kinds of trouble, standard signal transmitting module, the signal of telecommunication that simulation fault signal module sent transmits to diagnostic instrument, thereby the performance of inspection diagnostic instrument.
In this embodiment, the standard signal transmitting module includes N ultrahigh frequency partial discharge signal transmitting units, N ultrasonic partial discharge signal transmitting units, N high frequency partial discharge signal transmitting units, N iron core ground current signal transmitting units, N vibration signal transmitting units, and N infrared signal transmitting units, where N is a natural number. The system main control module controls all signal transmitting units of the standard signal transmitting module, and controls one or more transmitting units to transmit ultrahigh frequency partial discharge signals, ultrasonic partial discharge signals, high frequency partial discharge signals, iron core grounding current signals, vibration signals and infrared signals.
The simulation fault signal module comprises an ultrahigh frequency partial discharge fault signal unit, an ultrasonic partial discharge fault signal unit, a high frequency partial discharge fault signal unit, an iron core grounding current fault signal unit, a vibration fault signal unit and an infrared temperature fault signal unit. The system main control module controls the analog fault signal module to transmit a single or a plurality of ultrahigh frequency partial discharge fault signals, ultrasonic partial discharge fault signals, high frequency partial discharge fault signals, iron core grounding current fault signals, vibration signal fault signals and infrared fault signals.
In this embodiment, the signal transmitted by the standard signal transmitting module is a telecommunication signal transmitted by various sensors such as analog ultrahigh frequency partial discharge, ultrasonic partial discharge, high frequency partial discharge, iron core grounding current, and the likeThe signals, not the various types of real analog signals such as partial discharge, current, infrared, etc., should be distinguished. Let the transfer function of the UHF partial discharge sensor be H sens The ultrahigh frequency electric field signal is E i The electric field signal is converted into a voltage signal V by an ultrahigh frequency partial discharge sensor sens In which V is sens ＝E i ·H sens The ultrahigh frequency partial discharge signal transmitting unit simulates a voltage signal V emitted by an ultrahigh frequency partial discharge sensor sens . Similarly, other various signal transmitting units also simulate voltage signals sent by corresponding sensors.
The signals transmitted by the simulated fault signal module are electric signals transmitted by various sensors such as simulated ultrahigh frequency partial discharge, ultrasonic partial discharge, high frequency partial discharge and iron core grounding current when various faults are received, but are not real simulated fault signals such as various partial discharges, current, infrared and the like, and are to be distinguished. Let the transfer function of the UHF partial discharge sensor be H sens When the local discharge fault occurs to the on-site transformer, the sent ultrahigh frequency band electric field signal is E r The electric field signal is converted into a voltage signal V by an ultrahigh frequency partial discharge sensor error In which V is error ＝E r ·H sens Aiming at different fault types on site, different voltage signals V sent out through detection of the ultrahigh frequency sensor error1 、V error2 、V error3 For each unit, the ultrahigh-frequency partial discharge signal simulation signal unit simulates a voltage signal V emitted by the ultrahigh-frequency partial discharge sensor error1 、V error2 、V error3 . Similarly, other various fault signal units also simulate voltage signals sent by corresponding sensors when different faults occur on the site.
Example 2
The embodiment discloses a transformer comprehensive monitoring intelligent diagnostic instrument inspection method based on the inspection device of the embodiment, and the method realizes normal state sampling rate inspection. The intelligent diagnostic instrument to be tested comprises a system host, a sensor signal receiving and processing unit and n 1 An ultrahigh frequency partial discharge interface, n 2 An ultrasonic partial discharge interface, n 3 A high-frequency partial discharge interface, n 4 Individual iron core grounding current interface, n 5 Vibration signal interface, n 6 And each infrared signal interface is provided with a corresponding number of sensors. The process of realizing the normal state sampling rate inspection is as follows:
the ultrahigh frequency partial discharge signal transmitting unit is connected with an ultrahigh frequency partial discharge interface of the diagnostic instrument to be tested, the ultrasonic partial discharge signal transmitting unit is connected with an ultrasonic partial discharge interface of the diagnostic instrument to be tested, the high frequency partial discharge signal transmitting unit is connected with a high frequency partial discharge interface of the diagnostic instrument to be tested, the iron core grounding current signal transmitting unit is connected with an iron core grounding current interface of the diagnostic instrument to be tested, the vibration signal transmitting unit is connected with a vibration signal interface of the diagnostic instrument to be tested, and the infrared signal transmitting unit is connected with an infrared signal interface of the diagnostic instrument to be tested. Within the set time t, the system main control module controls the standard signal transmitting module, and each connected signal transmitting unit transmits a continuous standard voltage signal V 1 、V 2 、V 3 ...V i Respectively reading the number m of standard signals received by each interface of the intelligent diagnostic instrument 1 、m 2 、m 3 ...m i In a normal state, the sampling rate of each interface is as follows:
example 3
The embodiment discloses a transformer comprehensive monitoring intelligent diagnostic instrument inspection method, which is based on the inspection device of the embodiment and realizes the sampling multiple inspection of an alarm state fault signal interface, and the inspection process comprises the following steps:
one fault signal unit (such as an ultrahigh frequency fault signal unit) in the analog fault signal module is selected to be connected with an ultrahigh frequency partial discharge interface corresponding to the intelligent diagnostic instrument to be detected, and other interfaces of the intelligent diagnostic instrument except the ultrahigh frequency partial discharge interface are connected with the standard signal transmitting module. Firstly, the system main control module controls the simulation fault signal module to send out an ultrahigh frequency partial discharge fault signal V error1 Intelligent diagnosisThe ultrahigh frequency partial discharge interface in the instrument receives a fault signal V error1 And the signal is transmitted to a sensor signal receiving and processing unit, and the unit analyzes and processes the data and transmits the data to the intelligent diagnostic instrument system host. When the host of the intelligent diagnostic instrument system can normally identify the ultrahigh frequency partial discharge fault signal and display the alarm state, the sampling multiple inspection of the alarm state is started. During a specified time t, the UHF fault signal unit emits a continuous fault signal V error1 Reading the number m 'of ultrahigh frequency fault signals received by the ultrahigh frequency partial discharge interface corresponding to the intelligent diagnostic instrument host' error1 The sampling rate of the alarm state interface is as follows:
the signal transmitting unit transmits continuous standard signal V 1 、V 2 、V 3 ...V i Respectively reading the number m 'of standard signals received by each interface of the intelligent diagnostic instrument host except the ultrahigh frequency partial discharge fault signal interface' 1 、m′ 2 、m′ 3 ...m′ j And the sampling rate of each interface in the alarm state is as follows:
taking the average value of the sampling rates of other interfaces except the ultrahigh frequency partial discharge fault signal interface:
then the sampling multiple of the alarm state ultrahigh frequency partial discharge fault signal interface can be obtained:
similarly, the same method is adopted for detecting the sampling multiple of the alarm state of other fault signal interfaces.
Example 4
The embodiment discloses a transformer comprehensive monitoring intelligent diagnostic instrument inspection method, which is based on the inspection device in embodiment 1, and realizes fault type identification and alarm, wherein the inspection process comprises the following steps:
the analog fault signal module is connected with the corresponding interface of the intelligent diagnostic instrument to be tested.
Firstly, single fault type identification and alarm are detected, the system main control module controls the simulation fault signal module to send out a fault signal (such as an ultrasonic partial discharge fault signal), whether the intelligent diagnostic instrument can identify the type of the ultrasonic partial discharge fault signal received by the corresponding interface sensor or not is observed, and a correct alarm signal is sent out.
Then, multiple fault types are detected and recognized and alarmed at the same time, the system main control module controls the simulation fault signal module to send out an ultrahigh frequency partial discharge fault signal, an ultrasonic partial discharge fault signal and a high frequency partial discharge fault signal at the same time, whether the intelligent diagnostic instrument can recognize the fault signal types received by the corresponding interface sensors at the same time or not is observed, and a correct alarm signal is sent out.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive faculty, based on the technical solutions of the present invention.
Claims (8)
1. The utility model provides a transformer integrated monitoring intelligent diagnosis instrument verifying attachment which characterized in that: the system comprises a standard signal transmitting module, a simulated fault signal module and a system main control module, wherein the standard signal transmitting module and the simulated fault signal module are connected with the system main control module, the system main control module controls the standard signal transmitting module to transmit electric signals for simulating normal work of a diagnostic instrument sensor, the system main control module controls the simulated fault signal module to transmit electric signals sent when the simulated diagnostic instrument sensor receives various faults, and the electric signals sent by the standard signal transmitting module and the simulated fault signal module are transmitted to a diagnostic instrument, so that the performance of the diagnostic instrument is tested.
2. The transformer integrated monitoring intelligent diagnostic instrument checking device according to claim 1, characterized in that: the standard signal transmitting module comprises N ultrahigh frequency partial discharge signal transmitting units, N ultrasonic partial discharge signal transmitting units, N high frequency partial discharge signal transmitting units, N iron core grounding current signal transmitting units, N vibration signal transmitting units and N infrared signal transmitting units, wherein N is a natural number.
3. The transformer integrated monitoring intelligent diagnostic instrument checking device according to claim 1, characterized in that: the simulation fault signal module comprises an ultrahigh frequency partial discharge fault signal unit, an ultrasonic partial discharge fault signal unit, a high frequency partial discharge fault signal unit, an iron core grounding current fault signal unit, a vibration fault signal unit and an infrared temperature fault signal unit.
4. The transformer integrated monitoring intelligent diagnostic instrument inspection device of claim 2, characterized in that: the system main control module controls all signal transmitting units of the standard signal transmitting module, and controls one or more transmitting units to transmit ultrahigh frequency partial discharge signals, ultrasonic partial discharge signals, high frequency partial discharge signals, iron core grounding current signals, vibration signals and infrared signals.
5. The transformer integrated monitoring intelligent diagnostic instrument checking device according to claim 3, characterized in that: the system main control module controls the analog fault signal module to transmit a single or a plurality of ultrahigh frequency partial discharge fault signals, ultrasonic partial discharge fault signals, high frequency partial discharge fault signals, iron core grounding current fault signals, vibration signal fault signals and infrared fault signals.
6. A transformer comprehensive monitoring intelligent diagnostic instrument inspection method is characterized in that: the method is based on the inspection device of claim 2, and realizes the inspection of the sampling rate in the normal state, and the inspection method comprises the following steps:
the ultrahigh frequency partial discharge signal transmitting unit is connected with the ultrahigh frequency partial discharge interface of the diagnostic instrument to be tested, and ultrasonic partial discharge is performedThe signal transmitting unit is connected with the ultrasonic partial discharge interface of the diagnostic instrument to be tested, the high-frequency partial discharge signal transmitting unit is connected with the high-frequency partial discharge interface of the diagnostic instrument to be tested, the iron core grounding current signal transmitting unit is connected with the iron core grounding current interface of the diagnostic instrument to be tested, the vibration signal transmitting unit is connected with the vibration signal interface of the diagnostic instrument to be tested, the infrared signal transmitting unit is connected with the infrared signal interface of the diagnostic instrument to be tested, the system main control module controls the standard signal transmitting module to transmit continuous standard signals within a specified time t, and each connected signal transmitting unit respectively reads the number m of the standard signals received by each interface of the intelligent diagnostic instrument 1 、m 2 、m 3 ...m i In a normal state, the sampling rate of each interface is as follows:
7. a transformer comprehensive monitoring intelligent diagnostic instrument inspection method is characterized in that: the method is based on the detection device of claim 3, realizes the detection of sampling multiples of the alarm state fault signal interface, and comprises the following steps: selecting one fault signal unit in the simulation fault signal module to be connected with a corresponding interface of the intelligent diagnostic instrument to be tested, and connecting other interfaces of the intelligent diagnostic instrument with the standard signal transmitting module; firstly, a system main control module controls a simulation fault signal module to send out a corresponding fault signal, so that an intelligent diagnostic instrument identifies the type of the fault signal and displays an alarm state; then, in a set time t, the fault signal unit emits continuous fault signals and reads the number m 'of the fault signals received by the interface corresponding to the intelligent diagnostic equipment host' error The sampling rate of the alarm state fault signal interface is as follows:
each signal transmitting unit connected with the standard signal transmitting module transmits continuous standard signals and respectively reads the marks received by other interfaces of the intelligent diagnostic instrument except for the fault signal interfaceQuasi signal number m' 1 、m′ 2 、m′ 3 ...m′ j And the sampling rate of each interface in the alarm state is as follows:
taking the average value of the sampling rates of other interfaces except the fault signal interface:
then the interface alarm state sampling multiple may be obtained:
8. a transformer comprehensive monitoring intelligent diagnostic instrument inspection method is characterized in that: the method is based on the checking device of claim 3, realizes fault type identification and alarm, and comprises the following checking processes:
the simulation fault signal module is connected with the corresponding interface of the intelligent diagnostic instrument to be tested, the system main control module controls the simulation fault signal module to send out one or more fault signals, and observes whether the intelligent diagnostic instrument can identify one or more fault signal types and sends out correct alarm signals.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116184102A (en) * | 2023-04-27 | 2023-05-30 | 华北电力科学研究院有限责任公司 | Inspection system and method for transformer protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116184102A (en) * | 2023-04-27 | 2023-05-30 | 华北电力科学研究院有限责任公司 | Inspection system and method for transformer protection system |
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