CN209784469U - multifunctional mutual inductor polarity tester based on embedded RTU - Google Patents
multifunctional mutual inductor polarity tester based on embedded RTU Download PDFInfo
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Abstract
The utility model provides a multi-functional mutual-inductor polarity test appearance based on embedded RTU, including polarity test controlling means and polarity test executive device. The polarity test control device comprises a first shell, a test control module and a first LORA wireless communication module, wherein the test control module and the first LORA wireless communication module are arranged in the first shell, and the test control module sends a test instruction to the polarity test execution device through the first LORA wireless communication module or a wireless antenna of ZIGBEE. The polarity test execution device comprises a second shell and a pulse signal generation module, a second LORA wireless communication module and an address coding switch which are arranged in the second shell, wherein the pulse signal generation module receives a test execution instruction of the polarity test control device and sends a test pulse to a primary end of the mutual inductor to be tested. The design mode of relay test signal output and instrument display is abandoned, and the control function of the RTU and the powerful wireless communication function of the RTU are utilized to be matched with the address encoder, so that various application functions of the mutual inductor polarity tester are realized.
Description
Technical Field
The utility model relates to a mutual-inductor polarity test technical field, in particular to multi-functional mutual-inductor polarity test appearance based on embedded RTU.
Background
the polarity test is one of important works in the field, and can be used for discovering possible problems in internal and external lines and loops of a primary winding coil and a secondary winding coil of a mutual inductor in advance through the polarity test, verifying the wiring correctness of the equipment and the loops, ensuring the safe operation of the electrical equipment, ensuring that the existing polarity test equipment cannot meet the requirement of high efficiency, and solving the problems of more field test personnel and low working efficiency only through continuous innovation.
The polarity test method usually uses a direct current method, namely a mode of short-time (instant) power-on and power-off of a direct current power supply to a tested transformer (primary side) by utilizing an electromagnetic induction principle, and simulates one-to-one corresponding relation between an electromagnetic sudden change of a primary coil (primary side) and an electromagnetic induction sudden change of a primary coil (secondary side) of the tested transformer, wherein the method is called as a heteropolarity method, namely a homonymy terminal in engineering technology.
The polarity test work of the relay protection professional needs a test electrifying point and a test observation point to work simultaneously, objects are isolated or far away from each other between the two working points, two groups of 7 persons are needed in the traditional work, order transmission (conversation) persons need to be added due to the fact that the distance is far away or the objects are shielded, a group of test power supplies are added to an outdoor mutual inductor (primary side), the other group of test power supplies are used for observing the needle deflection dynamic scales and directions of the fingers by using a pointer meter indoors (secondary side), and whether the polarity direction is correct or not and whether the deflection dynamics of each group of transformation ratio needles is correct is judged. The (once measurement) test power supply dosage adopts artificial control, the phenomena of irregular contact and disconnection time, asynchronous observation of outdoor test operation and indoor test and the like often occur, the test result is not clear and the test needs to be repeated, and if the once dosage repetition times are too many, the continuous discharge capacity of the power supply battery is reduced easily to influence the test work. The polarity test usually adopts phase-by-phase testing, a mutual inductor has three phases, each phase (secondary side) has a plurality of windings, and testers need to change the phase and frequently transfer and change the test site (different secondary acquisition terminal screens) for many times outdoors, so the polarity test work is passive, the efficiency is low, repeated work is sometimes caused by the reasons, even test conclusion errors occur, and hidden dangers are buried in the safe operation of equipment.
The problem can be solved by adopting a wireless control technology, and in the existing published patent technology, a case of a mutual inductor polarity testing device designed by adopting a wireless remote control technology exists: for example: the portable wireless electric arc mutual inductor polarity tester is characterized in that a portable wireless electric arc mutual inductor polarity testing device is disclosed in a Chinese patent CN 207301231U, and a portable mutual inductor polarity and metering connection judging wireless tester is disclosed in a Chinese patent CN 207742282U, wherein the portable mutual inductor polarity and metering connection judging wireless tester is designed in a wireless mode, a test result display part and a test output part are also adopted, but the designed functions are too simple, 1) an intelligent controller is not arranged inside the test result display part and the test output part, and a wireless module only has a wireless function and does not have other control functions. 2) The test output part is realized by the switching operation of a plurality of relays because no intelligent controller is arranged, and the test pulse simulated by the short-time switching of the relays has poor effect and influences the test result. 3) The display part also adopts the mode of a traditional universal meter or a pointer meter with simple functions, and in addition, an intelligent controller is not arranged in the display part, so that data interaction with the test output part cannot be realized, and only passive display can be realized.
In view of the above, there is also a need for a multifunctional transformer polarity tester with an intelligent controller therein.
Embedded RTUs (wireless remote terminals), for example: the NA-RTU series has a programmable secondary development function, can set different functions according to different application requirements, has a powerful wireless communication function, can realize wireless communication by self, and can be easily matched with other wireless modules to realize multiple communication functions.
disclosure of Invention
In order to solve the background art problem, the utility model provides a multi-functional mutual-inductor polarity tester based on embedded RTU has abandoned the design of relay test signal output and instrument demonstration, increases inside intelligent control ware-embedded RTU on prior art's wireless mutual-inductor polarity tester basis to, utilize RTU's control function and self powerful wireless communication function, cooperation address encoder realizes the multiple application function of mutual-inductor polarity tester.
in order to achieve the above purpose, the utility model adopts the following technical scheme:
a multifunctional mutual inductor polarity tester based on an embedded RTU comprises a polarity test control device and a polarity test execution device.
The polarity test control device comprises a first shell, a test control module and a first LORA wireless communication module, wherein the test control module and the first LORA wireless communication module are arranged in the first shell, the test control module is an embedded RTU, is provided with a wireless antenna with a ZIGBEE function and is connected with a plurality of secondary wiring ends of a mutual inductor to be tested through a plurality of AI ports; the first LORA wireless communication module is connected through an RS232 port; the test control module sends a test instruction to the polarity test execution device through the first LORA wireless communication module or the ZIGBEE wireless antenna.
polarity test execution device include the pulse signal generation module in second casing and the second casing, second LORA wireless communication module and address code switch, pulse signal generation module be embedded RTU, dispose the wireless antenna of ZIGBEE function, its one-time wiring end through a plurality of DO ports connection mutual-inductor that awaits measuring, connect address code switch through a plurality of DI ports, connect second LORA wireless communication module through the RS232 port, pulse signal generation device receives polarity test controlling means's test execution instruction through second LORA wireless communication module or ZIGBEE's wireless antenna, send test pulse to the one-time end of mutual-inductor that awaits measuring.
The polarity test control device further comprises a touch screen, wherein the touch screen is arranged outside the first shell, is connected with the test control module in an RS485 communication mode and is used for operating and displaying a test result.
in the polarity test control device, a plurality of polarity test channel jacks are arranged on the first shell, a plurality of AI ports of the test control module are connected with the plurality of polarity test channel jacks on the first shell, and the polarity test control module is connected with a plurality of secondary ends of a single mutual inductor to be tested through the plurality of polarity test channel jacks or connected with a plurality of secondary ends of a plurality of mutual inductors to be tested.
The polarity test control device further comprises a first storage battery in the first shell, and the first storage battery supplies power to the test control module and the first LORA wireless communication module.
The polarity test execution device further comprises a second storage battery in the second shell, and the second storage battery supplies power to the pulse signal generation device and the second LORA wireless communication module.
And the embedded RTU selects a NA-RTU series.
The address encoder is a multi-channel dial switch.
Compared with the prior art, the beneficial effects of the utility model are that:
1. The polarity test execution device has a pulse output test function and adopts an embedded RTU with a programmable control function; the test signal output in a pulse mode is realized, the reliability of the output functional signal is higher than that of the traditional relay test, and the satisfaction degree of the test result is high;
2. And the polarity test control device has a data interaction function with the polarity test execution device, adopts multiple communication functions of the embedded RTU, and interacts with the polarity test execution device, so that a test instruction can be sent to the polarity test execution device to enable the polarity test execution device to execute under a controlled condition, and various data in the polarity test execution device can be displayed on the touch screen, for example: pulse parameters, pulse time and the like, and solves the technical problem that the prior art (a comparison file introduced in the background art) only has a display function of a universal meter or a pointer meter and lacks a data interaction function;
3. The third function, the polarity test control device has multiple communication functions, the ZIGBEE function of the embedded RTU and an LORA wireless module matched with the embedded RTU are adopted, the two wireless modes are mutually standby, and when one communication mode fails, the work of the device is not influenced;
The ZIGBEE communication mode of the embedded RTU is short in wireless transmission distance and suitable for short-distance use, the matched LORA wireless mode is a narrow-band Internet of things communication mode, the transmission distance is long and suitable for long-distance use, and the LORA wireless mode can realize data interaction with other common LORA wireless equipment in a power system;
4. Function four, the utility model discloses can also realize that a polarity test controlling means corresponds the function of a plurality of polarity test execution devices, is connected with a plurality of secondary of single mutual-inductor through a plurality of polarity passageway jacks, or is connected with a plurality of secondary of a plurality of mutual-inductors, through the different address code that different address encoder in the polarity test execution device on a plurality of mutual-inductors primary side set up, distinguish a plurality of polarity test execution devices;
5. And the embedded RTU can be conveniently connected with the touch screen, and the touch screen has the functions of displaying, operating and recording data, and is much stronger than the display function of a universal meter or a pointer instrument used in the prior art.
Drawings
FIG. 1 is a general block diagram of the present invention;
Fig. 2 is an electrical layout diagram of the polarity test control apparatus of the present invention;
Fig. 3 is a structural diagram of a housing of the polarity test control device of the present invention;
Fig. 4 is an electrical layout diagram of the polarity test execution device of the present invention;
Fig. 5 is a structural diagram of a casing of the polarity test executing apparatus of the present invention;
fig. 6 is a diagram of an embodiment of the present invention showing a polarity test control device corresponding to a plurality of polarity test execution devices.
wherein: 1-housing of the polarity test control device 2-housing of the polarity test execution device.
Detailed Description
The following describes in detail embodiments of the present invention.
As shown in fig. 1, the polarity tester for the multifunctional transformer based on the embedded RTU includes a polarity test control device and a polarity test execution device.
As shown in fig. 2 and 4, the polarity test control device includes a first housing 1, a test control module and a first LORA wireless communication module in the first housing 1, wherein the test control module is an embedded RTU and is configured with a ZIGBEE-function wireless antenna, and is connected to a plurality of secondary terminals of a to-be-tested transformer through a plurality of AI ports; the first LORA wireless communication module is connected through an RS232 port; the test control module sends a test instruction to the polarity test execution device through the first LORA wireless communication module or the ZIGBEE wireless antenna.
The polarity test control device further comprises a touch screen, wherein the touch screen is installed outside the first shell 1, is connected with the test control module in an RS485 communication mode and is used for operating and displaying a test result.
The polarity test control device further comprises a first storage battery in the first shell 1, and the first storage battery supplies power to the test control module and the first LORA wireless communication module.
As shown in fig. 2 and 4, in the polarity test control device, a plurality of polarity test channel jacks are disposed on the first housing 1, and a plurality of AI ports of the test control module are connected to the plurality of polarity test channel jacks on the first housing 1, and are connected to a plurality of secondary terminals of a single transformer to be tested or connected to a plurality of secondary terminals of a plurality of transformers to be tested through the plurality of polarity test channel jacks.
as shown in fig. 3 and 5, the polarity test execution device includes a second housing 2 and a pulse signal generation module, a second LORA wireless communication module and an address coding switch in the second housing 2, wherein the pulse signal generation module is an embedded RTU, and is configured with a wireless antenna with a ZIGBEE function, and is connected to a primary terminal of the transformer to be tested through a plurality of DO ports, and is connected to the address coding switch through a plurality of DI ports, and is connected to the second LORA wireless communication module through an RS232 port, and the pulse signal generation device receives a test execution instruction of the polarity test control device through the second LORA wireless communication module or the wireless antenna of the ZIGBEE, and sends a test pulse to the primary terminal of the transformer to be tested.
The polarity test execution device further comprises a second storage battery in the second shell 2, and the second storage battery supplies power to the pulse signal generation device and the second LORA wireless communication module.
and the embedded RTU selects a NA-RTU series. The NA-RTU series is an RTU of the proud development in south, has an Ethernet interface, an RS232 interface, an RS485 interface, a digital input interface (DI), a digital output interface (DO), an analog input interface (AI) and the like, is provided with a ZigBee wireless communication function, and can conveniently realize various control and communication functions. In addition, the NA-RTU series are RTUs with programmable functions, and users can set different functions according to different requirements of the users.
The address encoder is a multi-channel dial switch.
The utility model discloses can realize that a polarity test controlling means corresponds a plurality of polarity test execution device's function, be connected with a plurality of secondary ends of single mutual-inductor through a plurality of polarity passageway jacks, or be connected with a plurality of secondary ends of a plurality of mutual-inductors, through the different address codes that different address encoder in the polarity test execution device that a plurality of mutual-inductors incline different set up, distinguish a plurality of polarity test execution device. As shown in fig. 6, it is an exemplary diagram of the connection relationship of the polarity test control device corresponding to a plurality of polarity test execution devices according to the present invention.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (6)
1. A polarity tester of a multifunctional mutual inductor based on an embedded RTU comprises a polarity test control device and a polarity test execution device;
The polarity test control device is characterized by comprising a first shell, a test control module and a first LORA wireless communication module, wherein the test control module and the first LORA wireless communication module are arranged in the first shell, the test control module is an embedded RTU (remote terminal unit) and is provided with a ZIGBEE function, and the test control module is connected with a plurality of secondary wiring ends of a mutual inductor to be tested through a plurality of AI ports; the first LORA wireless communication module is connected through an RS232 port; the test control module sends a test instruction to the polarity test execution device through the first LORA wireless communication module or the wireless antenna with the ZIGBEE function;
Polarity test execution device include the pulse signal generation module in second casing and the second casing, second LORA wireless communication module and address code switch, pulse signal generation module be embedded RTU, dispose the ZIGBEE function, its one time wiring end through a plurality of DO ports connection mutual-inductor that awaits measuring, connect address code switch through a plurality of DI ports, connect second LORA wireless communication module through the RS232 port, pulse signal generation device receives polarity test control device's test execution instruction through the wireless antenna of second LORA wireless communication module or ZIGBEE function, sends test pulse to the one time end of mutual-inductor that awaits measuring.
2. The polarity tester of the embedded RTU-based multifunctional transformer of claim 1, wherein the polarity test control device further comprises a touch screen, the touch screen is mounted outside the first housing and connected with the test control module in an RS485 communication manner, and the touch screen is used for operating and displaying test results.
3. The polarity tester of embedded RTU-based multifunctional transformer of claim 1, wherein the polarity test control device has a plurality of polarity test channel jacks on the first housing, and a plurality of AI ports of the test control module are connected to the plurality of polarity test channel jacks on the first housing, and are connected to a plurality of secondary terminals of a single transformer under test or to a plurality of secondary terminals of a plurality of transformers under test through the plurality of polarity test channel jacks.
4. The embedded RTU-based multifunctional transformer polarity tester of claim 1, wherein the polarity test control device further comprises a first battery in the first housing, the first battery supplying power to the test control module and the first LORA wireless communication module.
5. the polarity tester of the embedded RTU-based multifunctional transformer of claim 1, wherein the polarity test execution device further comprises a second battery in the second housing, the second battery supplying power to the pulse signal generation device and the second LORA wireless communication module.
6. The embedded RTU-based multifunctional transformer polarity tester of claim 1, wherein the embedded RTU selects the NA-RTU series.
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| CN201920067685.XU CN209784469U (en) | 2019-01-15 | 2019-01-15 | multifunctional mutual inductor polarity tester based on embedded RTU |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
| CN109752628B (en) * | 2019-01-15 | 2024-03-19 | 国网辽宁省电力有限公司鞍山供电公司 | Multifunctional mutual inductor polarity tester based on embedded RTU |
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