CN211905643U - Solar infrared remote control CT polarity detection device - Google Patents

Abstract

The utility model relates to a solar infrared remote control CT polarity detection device, which comprises a power supply circuit, a voltage regulator circuit, an infrared remote control circuit and an output circuit. Circuit and output circuit. The infrared remote control circuit includes a special infrared receiving chip CX20106. The 7-pin of the chip CX20106 is respectively connected with the input end of the resistor R2 and the NOR gate U1A, and the other end of the resistor R2 is connected with the output end of the sliding rheostat and VCC respectively. The other input terminal of the NOR gate U1A is connected to the low-power relay JR, the output terminal of the NOR gate U1A is connected to the input terminal of the diode D2, and the output terminal of the diode D2 is respectively connected with the resistor R3, the capacitor C4, and the input terminal of the NAND gate U2A. The other end of the resistor R3 is connected with the resistor R4 and the grounding end respectively, and the other end of the resistor R4 is connected with the other end of the capacitor C4; the utility model has the advantages of detecting the secondary circuit, checking the cable core, and correcting the polarity of the CT. .

Description

Solar infrared remote control CT polarity detection device

technical field

The utility model relates to the technical field of power system relay protection, in particular to a solar infrared remote control CT polarity detection device.

Background technique

The power grid has new and expanded substation projects every year. Among them, the correctness of the CT polarity and its secondary circuit calibration directly affects the correct action of the protection device, and the accurate operation of the measurement and metering devices. It has become an important and important part in the new and expanded power grid. It is an indispensable work. At the same time, the correct action of the protection device is directly related to the smooth operation of the new and expanded stations, the stable operation in the future, and the stable operation of the regional power grid. Therefore, it is necessary to ensure the CT polarity of the power system and its secondary circuit. Getting it right is very important.

The traditional current transformer and its loop polarity verification method use the secondary side DC current method to perform polarity verification. In practical engineering applications, in order to improve work efficiency, the verification of CT polarity and the connection of its corresponding secondary circuit are required. The disconnection test is carried out at the same time. The use of the multimeter in the secondary circuit inspection is prone to misjudgment, and the phase sequence and polarity of the circuit cannot be judged intuitively. At the same time, the DC power supply is composed of dry batteries temporarily packaged and fixed, and the connection between the batteries is unstable. , so that electricity cannot be reliably added to the circuit. However, the working mode of multi-person cooperation is easy to cause the input and output to be out of synchronization, which affects the CT polarity and the test of its secondary circuit; Corrected solar infrared remote control CT polarity detection device is very necessary.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a solar infrared remote control CT polarity detection device that can detect the secondary circuit, check the cable core, and correct the CT polarity.

The purpose of this utility model is achieved in this way: a solar infrared remote control CT polarity detection device, which includes a power supply circuit, a voltage regulator circuit, an infrared remote control circuit and an output circuit, the power supply circuit includes a solar panel and a battery pack, and the battery The positive lead wires of the group are respectively connected with a voltage regulator circuit and an output circuit. The output circuit includes a first negative terminal V0, a first positive terminal V1, a second positive terminal V2, a button switch K1, a button switch K2, an indicator Lamp A, indicator light B, loudspeaker A and loudspeaker B, the other end of the voltage stabilizing circuit is respectively connected with the negative lead wire of the battery and the first negative lead end V0, and the positive lead wire of the battery is respectively connected with the button of the output circuit One end of the switch K1 and the button switch K2 are connected. The button switch K1, the indicator light A and the speaker A are connected in series with the first positive terminal V1 respectively, and the button switch K2, the indicator light B and the speaker B are respectively connected in series in series. Then connect with the second positive terminal V2;

The infrared remote control circuit includes a dedicated infrared receiver chip CX20106, the 1 pin of the chip CX20106 is connected to the output end of the photodiode D1, the input end of the photodiode D1 is respectively connected to the capacitor C1, the 4th pin of the chip CX20106, the capacitor C2, the capacitor C3, the ground The other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the 2 pin of the chip CX20106, the other end of the capacitor C2 is connected to the 6 pin of the chip CX20106, and the other end of the capacitor C3 is connected to the 6 pin of the chip CX20106. One end is connected to the 3-pin of the chip CX20106, the 5-pin and 8-pin of the chip CX20106 are respectively connected with the input end and the sliding piece of the sliding rheostat RP, and the 7-pin of the chip CX20106 is respectively connected with the resistor R2 and the input of the NOR gate U1A The other end of the resistor R2 is connected to the output end and VCC of the sliding varistor, the other input end of the NOR gate U1A is connected to the low-power relay JR, and the output end of the NOR gate U1A is connected to the diode D2. The output end of the diode D2 is connected to the input end of the resistor R3, the capacitor C4 and the NAND gate U2A respectively, the other end of the resistor R3 is respectively connected to the resistor R4 and the ground end, and the other end of the resistor R4 Connect to the other end of capacitor C4.

The solar panel provides 12V and above DC power, and the battery pack can store the electrical energy generated by the solar panel and output power for the subsequent circuits.

The voltage regulator circuit is a common voltage regulator circuit in the power system, which ensures that the input voltage of the circuit is stable at a voltage level of 12V and above, and meets the requirements of reliable signals.

The beneficial effects of the utility model: the principle, structure and operation of the utility model are simple, and the outstanding feature is that the power supply adopts solar panels, which is green and environmentally friendly and can be recycled, which reduces the manufacturing cost. Reliable requirements, the introduction of infrared technology directly liberates the CT polarity and its loop test staff, so as to realize single-person operation, achieve synchronous testing, and enhance the test accuracy. At the same time, the output circuit is accompanied by light and sound, which is convenient and effective. Observation improves work efficiency. The solar remote control CT polarity detection device fully complies with the "three defenses" requirements of the State Grid Corporation of China, especially reduces the harm caused by accidental touches and ensures the personal safety of electric personnel; the utility model has a secondary circuit that can detect , Check the advantages of cable core and CT polarity correction.

Description of drawings

Fig. 1 is the general circuit principle diagram of the present utility model.

Figure 2 is a schematic diagram of the infrared remote control circuit of the present invention.

Fig. 3 is the principle diagram of the voltage stabilizing circuit of the present invention.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1-3, the solar infrared remote control CT polarity detection device includes a power supply circuit, a voltage regulator circuit, an infrared remote control circuit and an output circuit. The power supply circuit includes a solar panel and a battery pack. The positive lead wires are respectively connected with a voltage regulator circuit and an output circuit. The output circuit includes a first negative terminal V0, a first positive terminal V1, a second positive terminal V2, a button switch K1, a button switch K2, and an indicator light A. , indicator B, speaker A and speaker B, the other end of the voltage regulator circuit is respectively connected with the negative lead wire of the battery and the first negative lead terminal V0, and the positive lead wire of the battery is respectively connected with the button switch K1 of the output circuit , one end of the button switch K2 is connected, the button switch K1, the indicator light A, and the speaker A are connected in series with the first positive terminal V1 respectively, and the button switch K2, the indicator light B, and the speaker B are respectively connected in series in series. The second positive terminal V2 is connected;

The infrared remote control circuit includes a dedicated infrared receiver chip CX20106, the 1 pin of the chip CX20106 is connected to the output end of the photodiode D1, the input end of the photodiode D1 is respectively connected to the capacitor C1, the 4th pin of the chip CX20106, the capacitor C2, the capacitor C3, the ground The other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the 2 pin of the chip CX20106, the other end of the capacitor C2 is connected to the 6 pin of the chip CX20106, and the other end of the capacitor C3 is connected to the 6 pin of the chip CX20106. One end is connected with the 3-pin of the chip CX20106, the 5-pin and 8-pin of the chip CX20106 are respectively connected with the input end and the sliding piece of the sliding rheostat RP, and the 7-pin of the chip CX20106 is respectively connected with the resistor R2 and the input of the NOR gate U1A The other end of the resistor R2 is connected to the output end and VCC of the sliding varistor respectively, the other input end of the NOR gate U1A is connected to the low-power relay JR, and the output end of the NOR gate U1A is connected to the diode D2 The output end of the diode D2 is connected to the input end of the resistor R3, the capacitor C4 and the NAND gate U2A respectively, the other end of the resistor R3 is connected to the resistor R4 and the ground end respectively, and the other end of the resistor R4 Connect to the other end of capacitor C4.

The solar panel provides 12V and above DC power supply, and the battery pack can store the electric energy generated by the solar panel. At the same time, it outputs power for the subsequent circuits. The voltage regulator circuit ensures that the circuit input voltage is stable at 12V and above, meeting the requirements of reliable signals. , In addition, the solar panel can charge and recycle the battery to enhance the battery performance and the portability of the instrument. The infrared remote control circuit includes a transmitting and receiving device, and its working range can reach 300 meters, which meets the needs of the substation CT polarity test work. At the same time, after the CT primary side connection line is completed, one person can operate in the control room, that is, the polarity test at the end of the CT secondary circuit can be realized. The output circuit includes the first negative terminal V0, the first positive terminal V1, the first Two positive terminal V2, button switches K1, K2, indicator lights and speakers, among which, in addition to the infrared remote control, the conduction of the output circuit can also be controlled by the button switch K2, and the indicator lights and speakers emit light and sound respectively to facilitate the observation of the circuit. on.

Example 2

As shown in Figure 1-3, the infrared remote control circuit includes a dedicated infrared receiver chip CX20106. Pin 1 of the chip CX20106 is connected to the output end of the photodiode D1, and the input end of the photodiode D1 is respectively connected to the capacitor C1 and the 4th pin of the chip CX20106. , Capacitor C2, Capacitor C3, connected to the ground terminal, the other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the 2 pin of the chip CX20106, the other end of the capacitor C2 is connected to the 6 pin of the chip CX20106 connection, the other end of the capacitor C3 is connected to the 3-pin of the chip CX20106, the 5-pin and 8-pin of the chip CX20106 are respectively connected with the input end of the sliding rheostat RP and the sliding piece, and the 7-pin of the chip CX20106 is respectively connected with the resistor R2 is connected to the input end of the NOR gate U1A, the other end of the resistor R2 is connected to the output end and VCC of the sliding varistor respectively, the other input end of the NOR gate U1A is connected to the low-power relay JR, and the NOR gate U1A is connected to the low-power relay JR. The output end of the gate U1A is connected to the input end of the diode D2, the output end of the diode D2 is respectively connected to the input end of the resistor R3, the capacitor C4, and the input end of the NAND gate U2A, and the other end of the resistor R3 is respectively connected to the resistor R4, grounding The other end of the resistor R4 is connected to the other end of the capacitor C4.

The solar panel provides 12V and above DC power supply, the battery pack can store the electric energy generated by the solar panel, and output power for the subsequent circuits. The voltage stabilizer circuit is a common voltage stabilizer circuit in the power system, which ensures that the circuit input voltage is stable at 12V and above. level to meet the requirements of reliable signals.

The principle, structure and operation of the utility model are simple, and the outstanding features are that the power supply adopts solar panels, which is green and environmentally friendly and can be recycled, which reduces the manufacturing cost. The introduction directly liberates the CT polarity and its loop test staff, so as to realize single-person operation, achieve synchronous testing, and enhance the test accuracy. At the same time, the output circuit is accompanied by light and sound, which is convenient for effective observation and improves work efficiency. The solar remote control CT polarity detection device fully complies with the "three defenses" requirements of the State Grid Corporation of China, especially reduces the harm caused by accidental touches and ensures the personal safety of electric personnel; the utility model has a secondary circuit that can detect , Check the advantages of cable core and CT polarity correction.

Claims (3)

1. The solar infrared remote control CT polarity detection device is characterized in that: it comprises a power supply circuit, a voltage regulator circuit, an infrared remote control circuit and an output circuit, and the power supply circuit comprises a solar panel and a battery pack, and the positive pole of the battery pack leads out The lines are respectively connected with a voltage stabilizing circuit and an output circuit. The output circuit includes a first negative terminal V0, a first positive terminal V1, a second positive terminal V2, a button switch K1, a button switch K2, an indicator light A, an indication Lamp B, loudspeaker A and loudspeaker B, the other end of the voltage regulator circuit is respectively connected with the negative lead wire of the battery and the first negative lead end V0, the positive lead wire of the battery is respectively connected with the button switch K1, button of the output circuit One end of the switch K2 is connected, the button switch K1, the indicator light A, and the speaker A are connected in series with the first positive outlet V1 respectively, and the button switch K2, the indicator light B, and the speaker B are connected in series with the second positive terminal V1 respectively. Positive terminal V2 connection; The infrared remote control circuit includes a dedicated infrared receiver chip CX20106, the 1 pin of the chip CX20106 is connected to the output end of the photodiode D1, the input end of the photodiode D1 is respectively connected to the capacitor C1, the 4th pin of the chip CX20106, the capacitor C2, the capacitor C3, the ground The other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the 2 pin of the chip CX20106, the other end of the capacitor C2 is connected to the 6 pin of the chip CX20106, and the other end of the capacitor C3 is connected to the 6 pin of the chip CX20106. One end is connected to the 3-pin of the chip CX20106, the 5-pin and 8-pin of the chip CX20106 are respectively connected with the input end and the sliding piece of the sliding rheostat RP, and the 7-pin of the chip CX20106 is respectively connected with the resistor R2 and the input of the NOR gate U1A The other end of the resistor R2 is connected to the output end and VCC of the sliding varistor, the other input end of the NOR gate U1A is connected to the low-power relay JR, and the output end of the NOR gate U1A is connected to the diode D2. The output end of the diode D2 is connected to the input end of the resistor R3, the capacitor C4 and the NAND gate U2A respectively, the other end of the resistor R3 is respectively connected to the resistor R4 and the ground end, and the other end of the resistor R4 Connect to the other end of capacitor C4. 2. The solar infrared remote control CT polarity detection device according to claim 1, characterized in that: the solar panel provides 12V and above DC power supply, and the battery pack can store the electric energy generated by the solar panel, which is output for the following circuit power supply. 3. The solar infrared remote control CT polarity detection device as claimed in claim 1, characterized in that: the voltage-stabilizing circuit is a voltage-stabilizing circuit of a power system, which ensures that the circuit input voltage is stabilized at a voltage level of 12V and above, and satisfies reliable signals. requirements.

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