CN219417705U - Intelligent transformer substation mutual inductance polarity detection system - Google Patents

Abstract

The utility model discloses a transformer substation mutual inductance polarity intelligent detection system which comprises a primary side excitation power supply and a secondary side hand-held terminal, wherein communication is realized between the primary side excitation power supply and the secondary side hand-held terminal through wireless communication. The utility model adopts the separation of the primary side excitation power supply and the secondary side hand-held terminal, overcomes the defect of long testing distance of the traditional manual direct current detection method in a wireless communication mode, greatly facilitates the application of the system, has no limit on the using position, improves the testing efficiency, reduces the participation of personnel, can not cause the conditions of missed detection and repeated detection, and has the advantages of direct display of the detection result on a screen and convenient viewing.

Description

Intelligent transformer substation mutual inductance polarity detection system

Technical Field

The utility model belongs to the field of transformer substation polarity detection, and particularly relates to an intelligent transformer substation mutual inductance polarity detection system.

Background

In a transformer substation, secondary current and voltage loops play important roles, so that the accurate diagnosis of the polarity of the transformer is realized, and the method has important significance for the safe operation of a power system. The method is characterized in that a primary side coil of the power transformer is connected with a dry battery, a secondary side of the power transformer is connected with a pointer ammeter, a primary measuring switch is closed after wiring is connected, deflection of an ammeter pointer is observed at the same time, and if the pointer is forward biased, the pointer is reverse biased after the switch is pulled open, the secondary side polarity is correct. If the direction of the pointer deflection is opposite to the above case, it is indicated that the connection method on the secondary side is wrong. The polarity discriminating method is used for detecting single-phase voltage or current transformers, and has the advantages of simple testing principle, simple equipment wiring method and the like. However, because the whole system has high requirements on testers in the application process, the testers must know electrical knowledge to detect, and meanwhile, the whole system is affected by the test environment in the application process, so that the whole system has the defects of inconvenient use, low detection efficiency and the like.

Disclosure of Invention

The utility model aims to provide an intelligent transformer substation mutual inductance polarity detection system which is convenient to use and high in detection efficiency by separating and connecting a primary side and a secondary side in a wireless communication mode.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the transformer substation mutual inductance polarity intelligent detection system comprises a primary side excitation power supply and a secondary side handheld terminal;

the primary side excitation power supply comprises a DSP module, a relay module, a wireless communication module A and an amplifying and filtering circuit, wherein the relay module, the wireless communication module A and the amplifying and filtering circuit are connected with the DSP module, the relay module comprises a relay, a booster and a current booster, the booster and the current booster are connected with the relay, the input end of the relay is connected with a 220V power supply, the booster and the current booster are both connected with the inlet wire end of a transformer substation, the output end of the booster is connected with a voltage transformer, the output end of the current booster is connected with a current transformer, and the voltage transformer and the current transformer are connected with the DSP module through the amplifying and filtering circuit;

the secondary side handheld terminal comprises a single chip microcomputer, a trigger key module, a display module, a storage module and a wireless communication module B, wherein the trigger key module, the display module, the storage module and the wireless communication module B are connected with the single chip microcomputer;

the wireless communication module A and the wireless communication module B both adopt an APC230 wireless data transmission module.

Further, the DSP module is also connected with a key module and a display.

Further, the singlechip adopts STM32 series microprocessors.

The utility model adopts the separation of the primary side excitation power supply and the secondary side hand-held terminal, overcomes the defect of long testing distance of the traditional manual direct current detection method in a wireless communication mode, greatly facilitates the application of the system, has no limit on the using position, improves the testing efficiency, reduces the participation of personnel, can not cause the conditions of missed detection and repeated detection, and has the advantages of direct display of the detection result on a screen and convenient viewing.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Detailed Description

As shown in fig. 1, the intelligent transformer substation mutual inductance polarity detection system provided by the embodiment includes a primary excitation power supply and a secondary handheld terminal, and communication is realized between the primary excitation power supply and the secondary handheld terminal through wireless communication.

The primary side excitation power supply comprises a DSP module, a relay module and a wireless communication module A, wherein the relay module is connected with the DSP module, the relay module comprises a relay, a booster, a current booster and a driving module, the input end of the relay is connected with a 220V input power supply, the output end of the relay is respectively connected with the booster and the current booster, the booster is used for boosting the voltage to 2000V and then delivering the voltage to the inlet wire end of the transformer substation, and the current booster is used for boosting the current to 200A and delivering the current to the inlet wire end of the transformer substation. The driving module is connected with the relay and used for driving whether the relay works or not, and the controller control instruction is derived from the DSP module, so that the DSP module is connected with the driving module.

The output end of the booster is connected with a voltage transformer, the output end of the current booster is connected with a current transformer, the voltage transformer and the current transformer are connected with a DSP module through an amplifying and filtering circuit, and the DSP module sends received signals acquired by the voltage transformer and the current transformer to the secondary side handheld terminal through a wireless communication module A.

The DSP is also connected with a key module for adjusting and controlling and a display for displaying.

The secondary side handheld terminal comprises a single chip microcomputer, a storage module, a wireless communication module B and a display module, wherein the storage module, the wireless communication module B and the display module are connected with the single chip microcomputer, the single chip microcomputer is realized by a microprocessor with data processing and data storage functions, the STM32 series single chip microcomputer is adopted in the embodiment, and signals connected with a current transformer and a voltage transformer are processed through a data processing method carried in the STM32 single chip microcomputer and the results are displayed through the display module.

The wireless communication module A and the wireless communication module B are paired to realize wireless data transmission, so that data transmission between the secondary side handheld terminal and the primary side excitation power supply is realized. The wireless communication module a and the wireless communication module B of the embodiment both adopt APC230 wireless data transmission modules, the APC230 wireless data transmission modules are highly integrated half-duplex micropower wireless data transmission modules, which are embedded into a high-speed single chip microcomputer and an ADI high-performance radio frequency chip ADF7020-1, and provide selection of a plurality of channels, various parameters such as serial port rate, transmitting power, radio frequency rate and the like can be modified on line or through a matched USB conversion plate, so that data of any size can be transmitted transparently, a user does not need to write complex setting and transmission programs, meanwhile, the device is operated in a small volume and wide voltage mode, the transmission distance is long, and the device is rich in convenient software programming setting functions.

Firstly, a primary side excitation power supply is arranged in a transformer substation according to requirements, a secondary side handheld terminal sends an instruction to the primary side excitation power supply to work through a wireless communication module, a voltage transformer and a current transformer collect signals and start the signals to the secondary side handheld terminal through the wireless communication module, and the secondary side handheld terminal processes the collected signals to judge the polarity of the transformer substation.

The foregoing is merely a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any modification and substitution based on the technical scheme and the inventive concept provided by the present utility model should be covered in the scope of the present utility model.

Claims (3)

1. The utility model provides a transformer substation's mutual inductance polarity intelligent detection system which characterized in that: the portable electronic device comprises a primary side excitation power supply and a secondary side handheld terminal;

the primary side excitation power supply comprises a DSP module, a relay module, a wireless communication module A and an amplifying and filtering circuit, wherein the relay module, the wireless communication module A and the amplifying and filtering circuit are connected with the DSP module, the relay module comprises a relay, a booster and a current booster, the booster and the current booster are connected with the relay, the input end of the relay is connected with a 220V power supply, the booster and the current booster are both connected with the inlet wire end of a transformer substation, the output end of the booster is connected with a voltage transformer, the output end of the current booster is connected with a current transformer, and the voltage transformer and the current transformer are connected with the DSP module through the amplifying and filtering circuit;

the secondary side handheld terminal comprises a single chip microcomputer, a trigger key module, a display module, a storage module and a wireless communication module B, wherein the trigger key module, the display module, the storage module and the wireless communication module B are connected with the single chip microcomputer;

the wireless communication module A and the wireless communication module B both adopt an APC230 wireless data transmission module.

2. The intelligent transformer substation mutual inductance polarity detection system according to claim 1, wherein: the DSP module is also connected with a key module and a display.

3. The intelligent transformer substation mutual inductance polarity detection system according to claim 1, wherein: the singlechip adopts STM32 series microprocessors.