CN215340107U - Secondary equipment switching value intelligence thing allies oneself with testing arrangement - Google Patents
Secondary equipment switching value intelligence thing allies oneself with testing arrangement Download PDFInfo
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- CN215340107U CN215340107U CN202121137543.XU CN202121137543U CN215340107U CN 215340107 U CN215340107 U CN 215340107U CN 202121137543 U CN202121137543 U CN 202121137543U CN 215340107 U CN215340107 U CN 215340107U
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Abstract
The utility model discloses an intelligent thing connection testing device for switching value of secondary equipment, which comprises a shell, a touch display screen arranged on a panel of the shell, loudspeakers arranged at two sides of the touch display screen, a base arranged at the lower end of the shell, a pulley arranged at the lower end of the base, a controller arranged in the shell, a power supply module, a switching value triggering module, a switching value measuring module, an intelligent interaction module and a thing connection module, wherein the front surface of the panel is provided with an excitation signal terminal row, a test signal terminal row, a voltage input terminal row and a current input terminal row, the input end of the switching value measuring module is respectively inserted into corresponding terminals of the test signal terminal row, and the input end of the power supply module is respectively connected with the voltage input terminal row and the power supply input terminal row. The device can automatically check the remote signaling signals, can realize the automation of the protection trip logic verification work, and obviously improves the point aligning efficiency and the protection checking work efficiency of the remote signaling signals.
Description
Technical Field
The utility model relates to the technical field of automatic testing of an electric power system, in particular to an intelligent Internet of things testing device for switching value of secondary equipment.
Background
The relay protection of the power system is an important defense line for stable operation of a power grid, and relates to numerous input quantity signals such as switch on position, switch off position, high oil temperature and the like, output quantity signals such as tripping, reclosing and the like, which can be collectively called as switching quantity, and are important signals in the relay protection, and related debugging work of the input quantity signals is mainly remote signaling signal checking work of a traditional transformer substation. The remote signaling check can confirm the reliable receiving and management of the automatic master station to the remote signaling signals of the substation end of the transformer substation. At present, the work of checking the remote signaling of the transformer substation is usually carried out in a manual point-to-point mode, namely, a transformer substation end worker contacts with an automatic main station worker through a telephone, the transformer substation end worker acts on primary equipment or a measurement and control device manually to serve as input excitation, then the automatic main station receives output information corresponding to the input excitation, the action information of the primary equipment input by the transformer substation end and the information received by the automatic main station are manually checked, and finally the checking work is finished. The traditional checking method has low automation degree, and the remote signaling checking workload is heavy because the remote signaling signals are numerous and the remote motor configuration is wrong occasionally, and the remote signaling checking needs to be repeated for many times. Meanwhile, electric shock or direct-current grounding accidents are easy to happen due to manual input signal excitation, great safety risks are brought to maintainers, and great potential safety hazards are buried in a power grid.
The related debugging work of the export quantity signal is mainly the trip logic verification of the protection device. The main transformer protection device, the bus differential protection device, the spare power automatic switching protection device and the like have more outlet pressure plates, and different operation switches can be jumped by protection actions according to different logics, different time limits and different turns to form a complex tripping matrix. After the trip matrix in the protection device is set, in order to verify the correctness of the trip logic, a maintainer needs to test the correctness of the corresponding switch of the protection action outlet and the correctness of the trip time. Currently, the test method is to perform a protection function test, and a maintainer measures voltage pulses at each trip pressure plate one by one, confirms that the protection function corresponds to a switch for tripping/closing, and simultaneously measures trip time. Due to the lack of a proper testing instrument and complicated wiring, a maintainer usually needs to repeat the same protection function test for multiple times to measure the conditions of different pressing plates, so that the efficiency is low, and the phenomena of improper matching, poor contact, fatigue, error and the like are easy to occur.
At present, two methods are generally used for detecting the correctness of an outlet matrix in a field test, namely, the method of measuring the voltage to ground of an outlet pressure plate by using a universal meter is used for detecting the correctness of the outlet matrix one by one; the other is to use a relay protection tester to directly measure the closing condition of the outlet contact; neither method can change the complexity of the check work of the trip matrix. Taking 220kV main transformer protection trip matrix verification as an example, the number of trip outlet pressure plates is close to 20, and each time of protection verification, 2 sets of main transformer protection with trip logic of up to 200 are faced, and at least 3 persons are needed. If the 200 logics are completely verified, a plurality of professionals are required to complete matching, 1 person adds fault analog quantity, 2 to 3 persons measure outlet pressure plate pulse or record outlet contact closing conditions, the outlet needs to be measured for more than 500 times, and the universal meter cannot verify outlet time; in the face of such verification with large workload, the traditional old method of classifying by sides, segmenting and time-limiting, and sequentially verifying one by pressing plates logically is only used at the present stage. And since the trip pulse is a millisecond instantaneous voltage pulse, the exit time of the trip matrix cannot be checked using a multimeter. Even if the relay protection tester is used completely, the time measurement problem is solved, but the quantity of the switch input quantity of the common relay protection tester cannot meet the requirement. The frequent repeated operation not only consumes a great deal of manpower time, but also is easy to cause the phenomena of poor contact, fatigue, error and the like due to the poor cooperation of multiple people, and the overhauling efficiency and the overhauling progress are seriously influenced. How to use intelligent device to improve relay protection switching value signal debugging efficiency and debugging quality, improve the reliability and the security of transformer substation's operation, be a new technical attempt, the problem that needs to solve is promoted to the mode that overhauls at present more.
In the aspect of intelligentization of remote signaling signal checking work, a method for achieving point alignment of a remote control device SCD model and an associated protection measurement and control device ICD model and a method for triggering point alignment of an internal simulation point alignment internal process of relay protection equipment in a station by using a point setting process of IEC61850 communication are respectively provided in a patent CN201710107316 of Nanjing Nanrui and a relay protection information automatic point alignment method applicable to an intelligent substation in a patent CN201711390848 of Beijing tetragonal corporation, but the two methods are mainly applied to the intelligent station, need to be achieved through a software system, cannot be applied to a conventional substation, and the application range is limited.
In the aspect of protection trip logic verification, the device proposed in the document [ strategic research for improving the periodic inspection efficiency of transformer protection ], master scholars' paper, zaita gao ] can illuminate an indicator lamp through a voltage pulse of an outlet pressure plate, visually display a loop of action, and simultaneously detect 10 loops. However, the device cannot measure the protection action time, and meanwhile, the device also needs to manually judge whether the protection action time acts correctly, so that the overall automation degree is still not high.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical defects mentioned in the background technology, the intelligent thing networking testing device for the switching value of the secondary equipment is designed, the device can automatically carry out remote signaling signal checking work, can realize the automation of protection tripping logic verification work, has the functions of thing networking and man-machine interaction, and obviously improves the point aligning efficiency and the protection checking work efficiency of remote signaling signals.
In order to achieve the technical purpose, the utility model provides a technical scheme that the intelligent thing connection testing device for the switching value of the secondary equipment comprises a shell, a touch display screen arranged on a panel of the shell, loudspeakers arranged on two sides of the touch display screen, a base arranged at the lower end of the shell, a pulley arranged at the lower end of the base, a controller arranged in the shell, a power supply module, a switching value triggering module, a switching value measuring module, an intelligent interaction module and a thing connection module, wherein the front surface of the panel is provided with an excitation signal terminal row, a test signal terminal row, a voltage input terminal row and a current input terminal row, the controller is respectively and electrically connected with the power supply module, the switching value triggering module, the switching value measuring module, the intelligent interaction module and the thing connection module, the output end of the switching value triggering module is respectively plugged with a corresponding terminal of the excitation signal terminal row, the input end of the switching value measuring module is respectively plugged with the corresponding terminal of the test signal terminal row, the input end of the power supply module is respectively connected with the voltage input terminal row and the power supply input terminal row, the signal input end of the touch display screen is electrically connected with the display signal output end of the controller, and the signal input end of the loudspeaker is electrically connected with the signal output end of the intelligent interaction module.
In the scheme, a pulley is mounted at the lower end of the intelligent Internet of things testing device for the switching value of the secondary equipment and can move randomly, a voice recognition unit, a voice playing unit and a relay library are arranged in an intelligent interaction module, the relay library has a wake-up function, the voice recognition unit recognizes external voice information and extracts keywords to trigger corresponding function controls, the voice playing unit feeds back the information of the function controls and further confirms the information, and parameter values corresponding to the functions can be set through voice; the secondary equipment switching value intelligent Internet of things testing device can be conveniently connected with the measurement and control device through the testing signal terminal strip and the excitation signal terminal strip.
Preferably, the switching value triggering module is composed of a plurality of switching value triggering sub-modules, each switching value triggering sub-module comprises an optical coupling relay, the power output end of each optical coupling relay is connected with one jack of the excitation signal terminal row, the power input end of each optical coupling relay is connected with the power module through a relay switch, the power module provides a 5V power supply for the optical coupling relays, and the control end of each relay switch is electrically connected with the control end of the controller.
In the scheme, a main component of the switching value triggering module is an optocoupler relay, a 5V direct current power supply is used for triggering the relay to be conducted, a signal power supply and a remote signaling signal terminal of a measurement and control device are conducted through external wiring, and a remote signaling signal is input for excitation, the optocoupler relay is a common solid-state relay, a non-mechanical component is used inside the optocoupler relay, the optocoupler relay can stably run in an impact environment, the service life is long, the switching speed is high, electromagnetic interference is not generated, and the electromagnetic compatibility is good; the structure mostly adopts encapsulation airtightness, and the device has strong vibration resistance and high reliability. Simultaneously, in order to solve the loaded down with trivial details consuming time problem of cable junction between traditional tester and the measurement and control device, the fixed terminal is inserted to customization integrated form terminal row, and direct plug can be fixed fast through simple fastening screw, has improved the wiring speed between secondary equipment switching value intelligence thing allies oneself with testing arrangement and the measurement and control device.
Preferably, the switching value measuring module consists of a plurality of switching value measuring sub-modules, each switching value measuring sub-module comprises an optical coupler isolator QP1, a first electric pin of the optical coupler isolator QP1 is connected with the power supply module through a resistor R3, a 12V power supply is provided, a second electric pin of the optical coupler isolator QP1 serves as a collector of the triode Q1, and a third electric pin of the optical coupler isolator QP1 is connected with a signal acquisition end of the controller; the fourth pin of the optocoupler isolator QP1 is electrically connected with a 5V power supply through a resistor R4, the emitter of the triode Q1 is grounded, the base of the triode Q1 is plugged with the corresponding terminal of the test signal terminal row through a resistor R1, and a resistor R2, a capacitor C1 and a diode D1 for protection and filtering are connected in parallel between the base and the emitter of the triode Q1.
In this scheme, switching value measurement return circuit adopts resistance to carry out the partial pressure to switching value direct current pulse voltage, recycles opto-coupler isolator QP1 and keeps apart the forceful electric power return circuit, and the control light current return circuit is with switching value signal input controller. The outlet of the test terminal is an outlet pressure plate lower end b and a grounding endaThe control power supply KM is closed during testing; the resistors R1 and R2 mainly function as voltage division, the diode D1 functions to prevent the input terminal from being damaged due to excessive reverse bias voltage, and the parallel capacitor C1 functions to reduce signal interference. The transistor Q1 is used as a switch element, and the QP1 is a high-speed optocoupler isolator. When the outlet contact is closed, a direct current pulse voltage of +110V (or +220V) is generated between IN and COM, the driving circuit is conducted, and a weak current loop IN the red frame is conducted through voltage division and strong current isolation to input a signal into the controller.
The controller is an Atmega 2560 singlechip.
The Internet of things module is an HF-A11-SMT-0WiFi module.
The utility model has the beneficial effects that: the device can automatically check the remote signaling signals, can realize the automation of the protection trip logic verification work, has the functions of device internet of things and man-machine interaction, and obviously improves the point aligning efficiency and the protection checking work efficiency of the remote signaling signals.
Drawings
Fig. 1 is a structural diagram of an intelligent instrumentation unit for secondary device switching value according to the present invention.
Fig. 2 is a circuit diagram of the switching value triggering submodule according to the present invention.
Fig. 3 is a circuit configuration diagram of the switching value measuring sub-module of the present invention.
The notation in the figure is: 1-shell, 2-base, 3-touch display screen, 4-loudspeaker, 5-pulley, 6-excitation signal terminal row, 7-test signal terminal row, 8-current input terminal row and 9-voltage input terminal row.
Detailed Description
For the purpose of better understanding the objects, technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and examples should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and not for limiting the scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the scope of the present invention.
As shown in fig. 1, an intelligent thing networking testing device for the switching value of a secondary device comprises a housing 1, a touch display screen 3 arranged on a panel of the housing, speakers 4 arranged at two sides of the touch display screen, a base 2 arranged at the lower end of the housing, a pulley 5 arranged at the lower end of the base, a controller (not shown) arranged in the housing, a power module not shown, a switching value triggering module not shown, a switching value measuring module not shown, an intelligent interaction module not shown, and a thing networking module not shown, wherein the front surface of the panel is provided with a driving signal terminal row 6, a test signal terminal row 7, a voltage input terminal row 9, and a current input terminal row 8, the controller is respectively and electrically connected with the power module, the switching value triggering module, the switching value measuring module, the intelligent interaction module, and the thing networking module, output ends of the switching value triggering module are respectively plugged with corresponding terminals of the driving signal terminal row, the input end of the switching value measuring module is respectively plugged with the corresponding terminal of the test signal terminal row, the input end of the power supply module is respectively connected with the voltage input terminal row and the power supply input terminal row, the signal input end of the touch display screen is electrically connected with the display signal output end of the controller, and the signal input end of the loudspeaker is electrically connected with the signal output end of the intelligent interaction module.
In the embodiment, the pulley is mounted at the lower end of the intelligent Internet of things testing device for the switching value of the secondary equipment and can move randomly, the voice recognition unit, the voice playing unit and the relay library are arranged in the intelligent interaction module, the relay library has a wake-up function, the voice recognition unit recognizes external voice information and extracts keywords to trigger corresponding function controls, the voice playing unit feeds back the information of the function controls and further confirms the information, and parameter values corresponding to the functions can be set through voice; the secondary equipment switching value intelligent Internet of things testing device can be conveniently connected with the measuring and controlling device through the testing signal terminal strip and the exciting signal terminal strip, wherein the controller is an Atmega 2560 single chip microcomputer, and the Internet of things module is an HF-A11-SMT-0WiFi module.
As shown in fig. 2, the switching value triggering module is composed of a plurality of switching value triggering sub-modules, each switching value triggering sub-module comprises an optocoupler relay, a power output end of the optocoupler relay is connected with one jack of the excitation signal terminal row, a power input end of the optocoupler relay is connected with the power module through a relay switch, the power module provides a 5V power supply for the optocoupler relay, and a control end of the relay switch is electrically connected with a control end of the controller.
In the embodiment, a main component of the switching value triggering module is an optocoupler relay, a 5V direct current power supply is used for triggering the relay to be conducted, a signal power supply and a remote signaling signal terminal of the measurement and control device are conducted through external wiring, and a remote signaling signal is input for excitation, the optocoupler relay is a common solid-state relay, a non-mechanical component is used inside the optocoupler relay, the optocoupler relay can stably run in an impact environment, the service life is long, the switching speed is high, electromagnetic interference is not generated, and the electromagnetic compatibility is good; the structure mostly adopts encapsulation airtightness, and the device has strong vibration resistance and high reliability. Simultaneously, in order to solve the loaded down with trivial details consuming time problem of cable junction between traditional tester and the measurement and control device, the fixed terminal is inserted to customization integrated form terminal row, and direct plug can be fixed fast through simple fastening screw, has improved the wiring speed between secondary equipment switching value intelligence thing allies oneself with testing arrangement and the measurement and control device.
As shown in fig. 3, the switching value measuring module is composed of a plurality of switching value measuring sub-modules, each switching value measuring sub-module includes an optical coupler isolator QP1, a first electrical pin of the optical coupler isolator QP1 is connected to the power supply module through a resistor R3, a 12V power supply is provided, a second electrical pin of the optical coupler isolator QP1 is used as a collector of a triode Q1, and a third electrical pin of the optical coupler isolator QP1 is connected to a signal acquisition end of the controller; the fourth pin of the optocoupler isolator QP1 is electrically connected with a 5V power supply through a resistor R4, the emitter of the triode Q1 is grounded, the base of the triode Q1 is plugged with the corresponding terminal of the test signal terminal row through a resistor R1, and a resistor R2, a capacitor C1 and a diode D1 for protection and filtering are connected in parallel between the base and the emitter of the triode Q1.
In this embodiment, the switching value measurement circuit divides the switching value dc pulse voltage by using a resistor, isolates the strong current circuit by using the optocoupler isolator QP1, and controls the weak current circuit to input the switching value signal to the controller. The outlet of the test terminal is an outlet pressure plate lower end b and a grounding endaThe control power supply KM is closed during testing; the resistors R1 and R2 mainly function as voltage division, the diode D1 functions to prevent the input terminal from being damaged due to excessive reverse bias voltage, and the parallel capacitor C1 functions to reduce signal interference. The transistor Q1 is used as a switch element, and the QP1 is a high-speed optocoupler isolator. When the outlet contact is closed, a direct current pulse voltage of +110V (or +220V) is generated between IN and COM, the driving circuit is conducted, and a weak current loop IN the red frame is conducted through voltage division and strong current isolation to input a signal into the controller.
The above-mentioned embodiments are preferred embodiments of the intelligent instrumentation unit for testing switching values of secondary devices according to the present invention, and the scope of the present invention is not limited thereto, and all equivalent changes in shape and structure according to the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a secondary equipment switching value intelligence thing allies oneself with testing arrangement which characterized in that: the intelligent testing device comprises a shell, a touch display screen arranged on a panel of the shell, loudspeakers arranged on two sides of the touch display screen, a base arranged at the lower end of the shell, pulleys arranged at the lower end of the base, a controller arranged in the shell, a power supply module, a switching quantity triggering module, a switching quantity measuring module, an intelligent interaction module and an Internet of things module, wherein the front surface of the panel is provided with an excitation signal terminal row, a testing signal terminal row, a voltage input terminal row and a current input terminal row, the controller is respectively and electrically connected with the power supply module, the switching quantity triggering module, the switching quantity measuring module, the intelligent interaction module and the Internet of things module, the output end of the switching quantity triggering module is respectively inserted with a corresponding terminal of the excitation signal terminal row, the input end of the switching quantity measuring module is respectively inserted with a corresponding terminal of the testing signal terminal row, and the input end of the power supply module is respectively connected with the voltage input terminal row and the power supply input terminal row, the signal input end of the touch display screen is electrically connected with the display signal output end of the controller, and the signal input end of the loudspeaker is electrically connected with the signal output end of the intelligent interaction module.
2. The intelligent Internet of things testing device for the switching value of the secondary equipment according to claim 1, characterized in that:
the switching value triggering module is composed of a plurality of groups of switching value triggering sub-modules, each switching value triggering sub-module comprises an optical coupling relay, the power output end of each optical coupling relay is connected with one jack of an excitation signal terminal row, the power input end of each optical coupling relay is connected with the power module through a relay switch, the power module provides a 5V power supply for the optical coupling relays, and the control end of each relay switch is electrically connected with the control end of a controller.
3. The intelligent Internet of things testing device for the switching value of the secondary equipment as claimed in claim 1 or 2, wherein:
the switching value measuring module consists of a plurality of switching value measuring sub-modules, each switching value measuring sub-module comprises a light coupling isolator QP1, a first electric pin of the light coupling isolator QP1 is connected with a power supply module through a resistor R3, a 12V power supply is provided, a second electric pin of the light coupling isolator QP1 serves as a collector of a triode Q1, and a third electric pin of the light coupling isolator QP1 is connected with a signal acquisition end of the controller; the fourth pin of the optocoupler isolator QP1 is electrically connected with a 5V power supply through a resistor R4, the emitter of the triode Q1 is grounded, the base of the triode Q1 is plugged with the corresponding terminal of the test signal terminal row through a resistor R1, and a resistor R2, a capacitor C1 and a diode D1 for protection and filtering are connected in parallel between the base and the emitter of the triode Q1.
4. The intelligent Internet of things testing device for the switching value of the secondary equipment as claimed in claim 1 or 2, wherein: the controller is an Atmega 2560 singlechip.
5. The intelligent Internet of things testing device for the switching value of the secondary equipment according to claim 1, characterized in that: the Internet of things module is an HF-A11-SMT-0WiFi module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121137543.XU CN215340107U (en) | 2021-05-26 | 2021-05-26 | Secondary equipment switching value intelligence thing allies oneself with testing arrangement |
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| CN202121137543.XU CN215340107U (en) | 2021-05-26 | 2021-05-26 | Secondary equipment switching value intelligence thing allies oneself with testing arrangement |
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| CN215340107U true CN215340107U (en) | 2021-12-28 |
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