CN111999569A - Current transformer transformation ratio detection device and detection method thereof - Google Patents
Current transformer transformation ratio detection device and detection method thereof Download PDFInfo
- Publication number
- CN111999569A CN111999569A CN202010787626.7A CN202010787626A CN111999569A CN 111999569 A CN111999569 A CN 111999569A CN 202010787626 A CN202010787626 A CN 202010787626A CN 111999569 A CN111999569 A CN 111999569A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- current
- host
- terminal
- transformation ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009466 transformation Effects 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 238000004891 communication Methods 0.000 claims description 40
- 238000012545 processing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 238000004364 calculation method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a current transformer transformation ratio detection device and a detection method thereof, belonging to the technical field of power systems, wherein the current transformer transformation ratio detection device comprises a host, a slave and a terminal; the host is used for receiving a current transformer transformation ratio detection request issued by the terminal, collecting primary side current of the current transformer, collecting secondary side current of the current transformer at the same time through the slave, and calculating the transformation ratio of the current transformer according to the primary side current and the secondary side current of the current transformer; the slave computer is used for collecting the current of the secondary side of the current transformer according to the instruction issued by the host computer and reporting the current to the host computer; and the terminal is used for receiving the primary side current and the secondary side current of the current transformer and the transformation ratio of the current transformer reported by the host and outputting and displaying the current transformer and the secondary side current. The invention can rapidly, reliably and real-timely obtain and display the transformation ratio of the current transformer, and has the advantages of convenient carrying and flexible and simple operation.
Description
Technical Field
The invention relates to a current transformer transformation ratio detection device and a detection method thereof, and belongs to the technical field of power systems.
Background
With the rapid development of the power technology, it is very necessary to be able to quickly detect the accurate and reliable transformation ratio value of the current transformer in real time; in the prior art, the detection device mainly adopts manual measurement, current clamps are respectively used for measuring current values on two sides of the current transformer, and then calculation is carried out to obtain the actual variable ratio of the current transformer. In the actual detection process, the current flowing through the current transformer changes in real time, the current values on the two sides of the current transformer are read manually, and the measured current values have time delay, namely the current values at the same moment cannot be read, so that the current values on the two sides of the current transformer are not read at the same moment, and therefore misjudgment and inaccuracy of the transformation ratio of the current transformer are caused, extra calculation is needed, and the transformation ratio of the current transformer cannot be expressed visually; and the position is fixed when traditional detection device uses, and the measurement personnel often face different operational environment, and the operation is inconvenient when reading, acquireing data.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a current transformer transformation ratio detection device and a detection method thereof, which can quickly, reliably and real-timely acquire and display the transformation ratio of a current transformer.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a current transformer transformation ratio detection device, which comprises a host, a slave and a terminal;
the host is used for receiving a current transformer transformation ratio detection request issued by the terminal, collecting primary side current of the current transformer, collecting secondary side current of the current transformer at the same time through the slave, and calculating the transformation ratio of the current transformer according to the primary side current and the secondary side current of the current transformer;
the slave computer is used for collecting the current of the secondary side of the current transformer according to the instruction issued by the host computer and reporting the current to the host computer;
and the terminal is used for receiving the primary side current, the secondary side current and the transformation ratio of the current transformer reported by the host and outputting and displaying the current transformer.
Furthermore, the terminal comprises a terminal CPU, a data bus interface, a Bluetooth communication unit and an LCD display unit, wherein the data bus interface, the Bluetooth communication unit and the LCD display unit are connected with the terminal CPU, the terminal CPU is in communication connection with the host through the data bus interface, and the data bus interface comprises an image electronic LCD interface matched with the LCD display unit and a Bluetooth interface matched with the Bluetooth communication unit.
Furthermore, the terminal, the host and the slave are respectively provided with a JTAG interface, and the host is respectively in communication connection with the terminal and the slave through the JTAG interface and is used for internal communication testing.
Furthermore, the terminal, the host and the slave are respectively provided with respective power supply units, and each power supply unit comprises a battery, a battery capacity detection unit for detecting the residual capacity and a battery conversion unit for converting the battery and an external power supply.
Furthermore, the host and the slave are respectively provided with a signal acquisition unit, and the signal acquisition unit comprises a signal acquisition device, an open-loop coil and a signal acquisition processing chip; the signal collector can collect the primary side/secondary side current of the current transformer through the open-loop coil and transmit the collected current signal to the signal collecting and processing chip for signal processing.
In a second aspect, the present invention provides a method for detecting a transformation ratio of a current transformer, the method comprising the following steps:
the terminal and the host establish a communication link;
the terminal issues a current transformer transformation ratio detection request to the host, collects primary side current of the current transformer through the host, and obtains secondary side current of the current transformer from the slave at the same moment through the host;
the terminal receives the primary side current and the secondary side current of the current transformer and the transformation ratio of the current transformer reported by the host computer and outputs and displays the transformation ratio, wherein the transformation ratio of the current transformer is obtained by the host computer according to the primary side current and the secondary side current of the current transformer.
Further, the method for establishing the communication link between the terminal and the host comprises the following steps:
according to preset Bluetooth matching information, carrying out Bluetooth pairing on the terminal and the host: if the pairing is unsuccessful, erasing the current Bluetooth matching information, and performing Bluetooth pairing again according to the following steps:
(a) reconfiguring Bluetooth matching information of the terminal;
(b) the terminal issues a test instruction to the host machine, so that the host machine automatically issues the test instruction to the slave machine after receiving the test instruction;
(c) the terminal receives the Bluetooth matching state of the host and the slave fed back by the host, and if the Bluetooth matching state passes, the communication link is established; otherwise, returning to the step (a).
Further, the method further comprises:
and carrying out abnormal judgment on the transformation ratio of the current transformer according to the received transformation ratio of the current transformer, and acquiring the change of the transformation ratio of the current transformer in an abnormal state.
In a third aspect, the present invention provides a terminal, comprising a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method of any of the second aspects.
In a fourth aspect, the invention provides a computer-readable storage medium having a computer program stored thereon, wherein the program is adapted to carry out the steps of the method according to any one of the second aspect when executed by a processor.
Compared with the prior art, the invention has the following beneficial effects:
according to the current transformer transformation ratio detection device and the detection method thereof, the terminal receives the primary side current, the secondary side current and the current transformer transformation ratio of the current transformer reported by the host and outputs and displays the current transformer transformation ratio, so that the current transformer transformation ratio at the same time can be rapidly, reliably and timely displayed;
the terminal, the host and the slave of the detection device are convenient to carry, flexible and simple to operate, reliable and safe; the terminal realizes movable remote control, and the working environment is stronger in adaptability and more convenient to operate.
Drawings
Fig. 1 is a system block diagram of a current transformer transformation ratio detection apparatus according to an embodiment of the present invention;
fig. 2 is a block diagram of the structure of the terminal of fig. 1;
FIG. 3 is a block diagram of the master and slave of FIG. 1;
FIG. 4 is a flowchart of a current mutual inductance ratio detection method according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating operation of the terminal of FIG. 4;
FIG. 6 is a flowchart of the operation of the host computer of FIG. 4;
fig. 7 is a flow chart of the operation of the slave in fig. 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
fig. 1 is a system block diagram of a Current Transformer (CT) transformation ratio detection apparatus according to an embodiment of the present invention, in which the current transformer transformation ratio detection apparatus includes a terminal, a host, and a slave; the host and the slave transmit data and instructions through a Bluetooth V4.0 transmission protocol, and the terminal and the host transmit data and instructions through the Bluetooth V4.0 transmission protocol.
When the current transformer is used, the primary side coil and the secondary side coil of the current transformer are clamped by the acquisition circuits of the host and the slave respectively and are used for acquiring corresponding data of the primary side current and the secondary side current of the current transformer. The host of the current transformer transformation ratio detection device is used for receiving a current transformer transformation ratio detection request issued by a terminal, collecting primary side current data of the current transformer, collecting secondary side current data of the current transformer at the same time through a slave, and calculating the transformation ratio of the current transformer according to the primary side current data and the secondary side current data of the current transformer; the slave computer is used for acquiring current data of the secondary side of the current transformer according to the instruction issued by the host computer and reporting the current data to the host computer; and the terminal is used for receiving the primary side current data, the secondary side current data and the current transformer transformation ratio of the current transformer reported by the host and outputting and displaying the data.
As shown in fig. 2, the terminal of the current transformer transformation ratio detection apparatus provided by the present invention includes a terminal CPU, a data bus interface, a bluetooth communication unit, a power supply unit, a real-time clock unit, a key processing unit, an LCD display unit, and a JTAG. The power supply unit of the terminal comprises a battery, a battery capacity detection unit for detecting the residual electric quantity and a battery conversion unit for converting the battery and an external power supply; specifically, a battery of the terminal is connected with a terminal CPU through a battery capacity detection unit, and a power conversion unit is connected with the terminal CPU and provides two options of power supply and battery power supply. The data bus interface, the Bluetooth communication unit, the real-time clock unit and the key processing unit of the terminal are respectively connected with a terminal CPU; the data bus interface comprises an image electronic LCD interface matched with the LCD display unit, a FLASH interface and a Bluetooth interface matched with the Bluetooth communication unit; the terminal CPU is in communication connection with the host through a data bus interface to realize communication data interaction; and the terminal is also in communication connection with the host through a JTAG interface and can be used for communication test between the terminal and the host.
As shown in fig. 3, the master and the slave of the current transformer transformation ratio detection apparatus provided by the present invention include the same structure and hardware, and specifically include a master/slave CPU, a power supply unit, a data bus interface, a signal acquisition unit, a real-time clock unit, a key processing unit, an LED display unit, and a JTAG. The power supply unit of the master/slave machine comprises a battery, a battery capacity detection unit for detecting the residual electric quantity and a battery conversion unit for converting the battery and an external power supply.
The battery of the host/slave is connected with the CPU of the host/slave through the battery capacity detection unit, and the power conversion unit is connected with the CPU of the host/slave and provides two options of power supply and battery power supply. The data bus interface, the Bluetooth communication unit, the real-time clock unit, the key processing unit and the LED display unit of the host/slave are respectively connected with a CPU of the host/slave, wherein the data bus interface of the host/slave comprises a FLASH interface and a Bluetooth interface matched with the Bluetooth communication unit; the CPU of the host computer is respectively in communication connection with the Bluetooth interfaces of the terminal and the slave computers, which are adaptive to the Bluetooth communication unit, through the Bluetooth interfaces adaptive to the Bluetooth communication unit, so that mutual communication data interaction is realized.
The host and the slave are respectively provided with a signal acquisition unit, and the signal acquisition unit comprises a signal acquisition device, an open-loop coil and a signal acquisition processing chip; the signal collector can collect the primary side/secondary side current of the current transformer through the open-loop coil, transmit the collected current signal to the signal collecting and processing chip for signal processing, respectively obtain primary side current data and secondary side current data after the signal processing, and transmit the primary side current data and the secondary side current data to respective CPUs.
When the current transformer works, the host machine and the slave machine are used in a combined mode, and the collection circuits of the host machine and the slave machine are clamped on the leads on the two sides of the current transformer through the open-loop coils respectively. The terminal issues a request instruction for obtaining the transformation ratio of the current transformer to the host, the request instruction is issued to the slave through the host, and the host and the slave acquire current data on two sides of the current transformer according to the received request instruction. The master machine and the slave machine transmit data through the Bluetooth communication units thereof, specifically, the Bluetooth communication unit of the slave machine transmits the secondary side current data measured by the Bluetooth communication unit of the slave machine to a processor of the master machine through the Bluetooth communication unit of the master machine, and the data refers to a digital signal with a time parameter; and the processor of the host calls the data in the data archive, calculates and processes the secondary side current data detected by the slave and the primary side current data detected by the host and detected by the slave at the same time as the secondary side current data detected by the slave to obtain the transformation ratio values of the secondary side current data and the secondary side current data, and uploads the primary side current data, the secondary side current data and the obtained transformation ratio values to the terminal for display.
The Bluetooth communication unit can adopt HC-08 of Guangzhou Hui information technology and a data transmission module based on Bluetooth Specification V4.0BLE Bluetooth protocol; the wireless working frequency band is 2.4GHz ISM, the modulation mode is GFSK, the maximum transmitting power of the module is 4dBm, the receiving sensitivity is-93 dBm, and 80-meter ultra-long distance communication can be realized in an open environment.
The host and the slave of the current transformer transformation ratio detection device provided by the embodiment of the invention also comprise shell components; the shell assembly comprises a left shell, a right shell handle, a handle and a middle shaft; the upper part of the right shell handle is a right shell part, and the lower part of the right shell handle is a handle part; the left shell and the right shell are both in arc hollow structures, and a left iron core and a right iron core of the open-loop coil and a lead thereof are respectively fixed in the cavities of the left shell and the right shell; the right end of the bottom of the left shell is overlapped with the left end of the middle part of the right shell handle in a superposition way, the middle shaft passes through the superposition part of the left shell and the right shell, and the right shell handle can rotate relative to the left shell to enable the right shell and the left shell to be closed into a ring or the top end to be separated; when the right shell and the left shell are closed into a ring, the open-loop coil is closed into a ring; when the right shell part is separated from the top end of the left shell part, the open-loop coil is opened; the upper end of the handle is provided with a U-shaped groove; the lower end of the left shell is fixed in the U-shaped groove, and the middle part of the right shell handle is positioned in the U-shaped groove; pressing the handle part, rotating the right shell part, and separating the top end of the right shell part from the top end of the left shell part; the handle part is lifted, the right shell part rotates, and the top end of the right shell part and the left shell part are closed into a ring.
The host and the slave of the current transformer transformation ratio detection device also comprise reset components; the reset assembly comprises a fixed rod and a torsion spring; the fixed rod is arranged in the right shell handle, is positioned in the middle of the right shell handle and is vertical to the front surface and the rear surface of the right shell handle; the torsion spring is sleeved on the fixed rod and is provided with a first support arm and a second support arm; the end part of the first support arm is propped against the outer wall of the middle shaft; a gear plate is arranged in the handle part, and the end part of the second support arm is abutted against the left side of the gear plate; pressing the handle part, compressing the second support arm to the first support arm, loosening the handle, resetting the second support arm, and driving the handle part to be lifted to the original position, wherein the middle part of the handle of the right shell is provided with a limiting hole; the pore channel of the limiting hole is vertical to the front surface of the right shell handle; the dead lever sets up in spacing hole, and first support arm and second support arm stretch into the inside of right casing handle from the fretwork part of spacing hole pore wall.
According to the current transformer transformation ratio detection device provided by the invention, the terminal, the host and the slave are all portable terminal equipment, the structural design is compact, the size is small and novel, and the planning is reasonable; in the application detection process in the field of electric power systems, the terminal is high in mobility, adaptable to different environments, safe, high in reliability and simple to operate, detects current data at the same moment, and can quickly acquire the transformation ratio values of two sides of the current transformer in real time.
It should be noted that, in the embodiment of the present invention, the terminal may be a mobile handheld terminal or other fixed remote terminals.
Example two:
as shown in fig. 4, 5, 6, and 7, an embodiment of the present invention further provides a method for detecting a transformation ratio of a current transformer, including the following steps:
the method comprises the following steps: establishing a communication link with a host specifically may include the steps of:
according to preset Bluetooth matching information, carrying out Bluetooth pairing on the terminal and the host: if the Bluetooth pairing is successful, indicating that a communication link is established; otherwise, erasing the current Bluetooth matching information, and performing Bluetooth pairing again according to the following steps:
(a) reconfiguring Bluetooth matching information of the terminal;
checking whether the Bluetooth matching information configuration item in the terminal menu is correct, and if not, reconfiguring the Bluetooth matching information through the key processing unit of the terminal.
(b) A test instruction for carrying out Bluetooth pairing is issued to the host computer, so that the same test instruction is automatically issued to the slave computer after the host computer receives the test instruction;
(c) receiving the matching state of the host and the slave fed back by the host, and if the matching is passed, indicating that a communication link is established; otherwise, returning to the step (a).
Step two: issuing a current transformer transformation ratio detection request to a host, collecting current data of a primary side of the current transformer through the host, and obtaining current data of a secondary side of the current transformer at the same moment from a slave through the host;
the slave computer collects a secondary side current signal through the signal collector, performs numerical processing to obtain secondary side current data and reports the processed data to the host computer through a Bluetooth communication unit of the slave computer; the host machine acquires a primary side current signal with the same time as secondary side current data acquired by the slave machine through the signal acquisition unit, performs numerical processing to obtain primary side current data and processed data and secondary side current data reported by the slave machine, then performs current transformer transformation ratio calculation according to the primary side current data and the secondary side current data to obtain a current transformer transformation ratio, and reports the primary side current data, the secondary side current data and the current transformer transformation ratio to the terminal through a Bluetooth communication unit of the host machine.
Step three: receiving primary side current data, secondary side current data and current transformer transformation ratio of the current transformer reported by the host computer, and outputting and displaying; therefore, the terminal can simultaneously display the primary side current data, the secondary side current data and the transformation ratio of the current transformer; and the current transformer transformation ratio is obtained by the host computer according to the primary side current of the current transformer and the secondary side current of the current transformer.
In the method, the abnormal ratio judgment of the current transformer can be further performed according to the received current transformer ratio, so that the change of the ratio in the abnormal state of the current transformer can be obtained. If the CT is normal, the terminal does not send an instruction for acquiring current data, and the host and the slave acquire data by self and report the data; when the CT is abnormal, the terminal can issue a current transformer transformation ratio abnormal instruction to the host computer, issue an instruction to the slave computer through the host computer, the host computer obtains primary side current data according to the abnormal instruction and receives secondary side current data collected by the slave computer according to the abnormal instruction, then the host computer performs current transformer transformation ratio calculation according to the primary side current data and the secondary side current data and reports the primary side current data, the secondary side current data and the current transformer transformation ratio to the terminal, and therefore the terminal can effectively detect the change of the current transformer transformation ratio in real time.
It should be noted that the current transformer transformation ratio detection method provided by the present embodiment may be executed by a mobile handheld terminal, and may also be executed by a fixed remote terminal.
Example three:
the embodiment of the invention also provides a terminal, which comprises a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate according to stored instructions to perform the steps of the current transformer ratio detection method in the second embodiment.
Example four:
the invention provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of the current transformer ratio detection method of embodiment two.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A current transformer transformation ratio detection device is characterized by comprising a host, a slave and a terminal;
the host is used for receiving a current transformer transformation ratio detection request issued by the terminal, collecting primary side current of the current transformer, collecting secondary side current of the current transformer at the same time through the slave, and calculating the transformation ratio of the current transformer according to the primary side current and the secondary side current of the current transformer;
the slave computer is used for collecting the current of the secondary side of the current transformer according to the instruction issued by the host computer and reporting the current to the host computer;
and the terminal is used for receiving the primary side current, the secondary side current and the transformation ratio of the current transformer reported by the host and outputting and displaying the current transformer.
2. The current transformer transformation ratio detection device according to claim 1, wherein the terminal comprises a terminal CPU, and a data bus interface, a Bluetooth communication unit and an LCD display unit which are connected with the terminal CPU, the terminal CPU is in communication connection with the host through the data bus interface, and the data bus interface comprises an image electronic LCD interface matched with the LCD display unit and a Bluetooth interface matched with the Bluetooth communication unit.
3. The apparatus according to claim 1, wherein the terminal, the master and the slave are respectively configured with a JTAG interface, and the master is communicatively connected to the terminal and the slave through the JTAG interface for performing an internal communication test.
4. The apparatus according to claim 1, wherein the terminal, the master and the slave are respectively provided with a power supply unit, and the power supply unit comprises a battery, a battery capacity detection unit for detecting a remaining power, and a battery conversion unit for converting the battery and an external power supply.
5. The current transformer transformation ratio detection device according to claim 1, wherein the host and the slave are respectively configured with respective signal acquisition units, and the signal acquisition units comprise a signal collector, an open-loop coil and a signal acquisition processing chip; the signal collector can collect the primary side/secondary side current of the current transformer through the open-loop coil and transmit the collected current signal to the signal collecting and processing chip for signal processing.
6. A current transformer transformation ratio detection method is characterized by comprising the following steps:
the terminal and the host establish a communication link;
the terminal issues a current transformer transformation ratio detection request to the host, collects primary side current of the current transformer through the host, and obtains secondary side current of the current transformer from the slave at the same moment through the host;
the terminal receives the primary side current and the secondary side current of the current transformer and the transformation ratio of the current transformer reported by the host computer and outputs and displays the transformation ratio, wherein the transformation ratio of the current transformer is obtained by the host computer according to the primary side current and the secondary side current of the current transformer.
7. The method for detecting the transformation ratio of the current transformer according to claim 6, wherein the method for the terminal to establish the communication link with the host comprises the following steps:
according to preset Bluetooth matching information, carrying out Bluetooth pairing on the terminal and the host: if the pairing is unsuccessful, erasing the current Bluetooth matching information, and performing Bluetooth pairing again according to the following steps:
(a) reconfiguring Bluetooth matching information of the terminal;
(b) the terminal issues a test instruction for carrying out Bluetooth pairing to the host machine, so that the host machine automatically issues the test instruction to the slave machine after receiving the test instruction;
(c) the terminal receives the Bluetooth matching state of the host and the slave fed back by the host, and if the Bluetooth matching state passes, the communication link is established; otherwise, returning to the step (a).
8. The method for detecting the transformation ratio of the current transformer according to claim 6, further comprising:
and carrying out abnormal judgment on the transformation ratio of the current transformer according to the received transformation ratio of the current transformer, and acquiring the change of the transformation ratio of the current transformer in an abnormal state.
9. A terminal comprising a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of claims 6 to 8.
10. Computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010787626.7A CN111999569A (en) | 2020-08-07 | 2020-08-07 | Current transformer transformation ratio detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010787626.7A CN111999569A (en) | 2020-08-07 | 2020-08-07 | Current transformer transformation ratio detection device and detection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111999569A true CN111999569A (en) | 2020-11-27 |
Family
ID=73463742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010787626.7A Pending CN111999569A (en) | 2020-08-07 | 2020-08-07 | Current transformer transformation ratio detection device and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111999569A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062996A (en) * | 2021-11-18 | 2022-02-18 | 国网四川省电力公司营销服务中心 | Method, device, equipment and medium for checking transformation ratio of current transformer of power distribution network |
| CN115835051A (en) * | 2022-10-31 | 2023-03-21 | 武汉慧联无限科技有限公司 | Method, device, processing equipment and storage medium for executing predetermined operation |
| CN115980654A (en) * | 2023-02-03 | 2023-04-18 | 广州市德珑电子器件有限公司 | Current transformer detection method and system |
| CN118584169A (en) * | 2024-08-02 | 2024-09-03 | 国网天津市电力公司滨海供电分公司 | Non-opening cabinet door type current transformer transformation ratio acquisition and reading device and method |
| CN118731519A (en) * | 2024-09-04 | 2024-10-01 | 成都昶鑫电子科技有限公司 | High-low voltage side electrorheological ratio on-line monitoring system and monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319049Y (en) * | 2008-12-09 | 2009-09-30 | 保定新云达电力设备有限责任公司 | High-tension current mutual-inductor transformation ratio tester |
| CN103698730A (en) * | 2013-12-12 | 2014-04-02 | 国网上海市电力公司 | Current transformer checking system of alternating current-direct current double power supplies |
| CN105652133A (en) * | 2016-03-26 | 2016-06-08 | 国家电网公司 | CT wireless tester based on cell phone platform and synchronous testing method |
| CN209372946U (en) * | 2018-12-29 | 2019-09-10 | 江苏益邦电力科技有限公司 | Electric current coiling no-load voltage ratio detection device |
| CN111398696A (en) * | 2019-12-27 | 2020-07-10 | 国网浙江省电力有限公司金华供电公司 | On-spot quick tester of current transformer transformation ratio |
-
2020
- 2020-08-07 CN CN202010787626.7A patent/CN111999569A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319049Y (en) * | 2008-12-09 | 2009-09-30 | 保定新云达电力设备有限责任公司 | High-tension current mutual-inductor transformation ratio tester |
| CN103698730A (en) * | 2013-12-12 | 2014-04-02 | 国网上海市电力公司 | Current transformer checking system of alternating current-direct current double power supplies |
| CN105652133A (en) * | 2016-03-26 | 2016-06-08 | 国家电网公司 | CT wireless tester based on cell phone platform and synchronous testing method |
| CN209372946U (en) * | 2018-12-29 | 2019-09-10 | 江苏益邦电力科技有限公司 | Electric current coiling no-load voltage ratio detection device |
| CN111398696A (en) * | 2019-12-27 | 2020-07-10 | 国网浙江省电力有限公司金华供电公司 | On-spot quick tester of current transformer transformation ratio |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062996A (en) * | 2021-11-18 | 2022-02-18 | 国网四川省电力公司营销服务中心 | Method, device, equipment and medium for checking transformation ratio of current transformer of power distribution network |
| CN115835051A (en) * | 2022-10-31 | 2023-03-21 | 武汉慧联无限科技有限公司 | Method, device, processing equipment and storage medium for executing predetermined operation |
| CN115835051B (en) * | 2022-10-31 | 2023-09-29 | 武汉慧联无限科技有限公司 | Method, apparatus, processing device and storage medium for performing predetermined operation |
| CN115980654A (en) * | 2023-02-03 | 2023-04-18 | 广州市德珑电子器件有限公司 | Current transformer detection method and system |
| CN115980654B (en) * | 2023-02-03 | 2023-10-31 | 广州市德珑电子器件有限公司 | Current transformer detection method and system |
| CN118584169A (en) * | 2024-08-02 | 2024-09-03 | 国网天津市电力公司滨海供电分公司 | Non-opening cabinet door type current transformer transformation ratio acquisition and reading device and method |
| CN118731519A (en) * | 2024-09-04 | 2024-10-01 | 成都昶鑫电子科技有限公司 | High-low voltage side electrorheological ratio on-line monitoring system and monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111999569A (en) | Current transformer transformation ratio detection device and detection method thereof | |
| CN202066623U (en) | Pantograph static pressure detection terminal, controller and detection system | |
| CN102375136A (en) | System and method for verifying electric energy meter on site | |
| CN211402669U (en) | Low-voltage distribution network leakage current monitoring device | |
| CN116736073A (en) | Method and device for diagnosing faults of secondary direct current loop of transformer substation | |
| CN104914296A (en) | Multifunctional clamp meter | |
| CN204989451U (en) | On --spot check -up communication tester of electric energy meter | |
| CN201319049Y (en) | High-tension current mutual-inductor transformation ratio tester | |
| CN210181206U (en) | Remote verification data acquisition and transmission system for electric energy meter calibration device | |
| CN210469738U (en) | Power consumption detection device for Bluetooth headset | |
| CN201364131Y (en) | Electronic digital display indicator with data processing and wireless transmission functions | |
| CN204028339U (en) | A kind of power information acquisition terminal multifunctional detecting device | |
| CN205068742U (en) | Appearance is examined to intelligence point based on wireless sensing unit | |
| CN202904298U (en) | Remote measurement and control apparatus for oil pumping unit | |
| CN214067331U (en) | Sf6 density relay checking device with image recognition function | |
| CN115656690A (en) | Main transformer high-voltage debugging equipment based on Internet of things and detection method thereof | |
| CN204758690U (en) | Multipurpose plier table that appears | |
| CN203224569U (en) | Resistance tester based on wireless transmission | |
| CN210134914U (en) | Efficiency monitoring equipment of oil pumping unit | |
| CN114415100A (en) | Electric energy metering device on-site detection equipment and data transmission method thereof | |
| CN208636381U (en) | A kind of portable electromechanical equipment fault diagnosis instrument | |
| CN220224339U (en) | Site data rapid acquisition equipment adopting cathode protection gas pipeline | |
| CN103207370A (en) | Method for automatically detecting touch key state and display device | |
| CN204129202U (en) | Resistor intelligent display module | |
| CN110555289B (en) | Motor stator winding multi-physical field coupling computing platform and computing method based on cloud computing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |
|
| RJ01 | Rejection of invention patent application after publication |