CN206710560U - Voltage-time type logic tester - Google Patents

Abstract

The utility model discloses a voltage-time type logic tester, which comprises that a power distribution terminal logic test module includes a control loop, a contactor in the control loop is connected with a main output loop of the contactor, and the main output loop of the contactor is connected with an output end of a power supply; The section switch opening time test module includes an accumulator, and the accumulator automatically records the switch opening time; the closing peak current test module includes a current transformer connected in series with the output port of the power distribution terminal, and the closing peak current is measured by the ammeter The remote signaling and telemetry auxiliary test module includes an adjustable voltage and current output module and an analog switch. The adjustable voltage and current output module outputs adjustable voltage and current, and cooperates with the analog switch to complete the telemetry and remote signaling function test. It can realize voltage time type power distribution terminal logic verification, section switch closing peak current test, section switch opening time test, and remote measurement and remote signaling auxiliary function test.

Description

Voltage time logic tester

technical field

The utility model relates to the technical field of intelligent switch logic test, in particular to a voltage-time logic tester.

Background technique

The application time of the distribution automation system is still short, the relevant technical specifications and standards are not perfect, and the reliability of the equipment cannot meet the requirements. In many hilly areas, the voltage-time feeder in local mode is widely used, accounting for 92%, which brings conditions for the application of equipment.

Taking the distribution network of a certain city as an example, in 2014, there were many times in 2014, the expansion of the fault range caused by the logic action error of the voltage-time distribution terminal, the inaccurate judgment of the fault area, the reclosing failure caused by the slow opening speed of the switch, and the closing current of the switch. Largely lead to accidents such as burning of power distribution terminals. For a long time, there have been no testing instruments for smart distribution network equipment, which has exposed equipment defects that should have been eliminated before commissioning, bringing great hidden dangers to the operation of the distribution network.

Utility model content

The purpose of this utility model is to solve the above problems, to provide a voltage time type logic tester, which can realize the voltage time type power distribution terminal logic verification, the peak current test of the closing switch of the section switch, the opening time test of the section switch, Telemetry and telematics auxiliary function test.

In order to achieve the above object, the utility model adopts the following technical solutions:

Voltage time logic tester, including power distribution terminal logic test module, section switch opening time test module, closing peak current test module and remote signaling and telemetry auxiliary test module;

The power distribution terminal logic test module includes a control loop, the contactor in the control loop is connected to the main output loop of the contactor, and the main output loop of the contactor is connected to the output end of the power supply;

The section switch opening time test module includes a timer, and the timer automatically records the switch opening time;

The closing peak current test module includes a current transformer connected in series on the output port of the power distribution terminal, and the closing peak current is measured by an ammeter;

The remote signaling and telemetry auxiliary test module includes an adjustable voltage and current output module and an analog switch. The adjustable voltage and current output module outputs adjustable voltage and current, and cooperates with the analog switch to complete the telemetry and remote signaling function test.

The power distribution terminal logic test module, the section switch opening time test module, the closing peak current test module and the remote signaling and telemetry auxiliary test module are integrated in the same portable box; the power distribution terminal logic test module, the section The switch opening time test module and the switch peak current test module share a power supply interface.

The control loop includes a power supply side control loop and a load side control loop connected in series on the main line, two main air switches G1 and G2 are connected in series on the main line, and an indicator light T0 is connected to the main line; the main line includes a live line and a neutral line; By setting the time relay, the precise output of voltage pulses on the power supply side and the load side of the power distribution terminal can be realized, thereby simulating the voltage change of the power distribution terminal under various fault conditions of the line, and realizing the logic test of the power distribution terminal

The control loop on the power supply side includes nine branches connected in parallel on the live wire and the neutral wire, one branch is connected in series with the power supply side start button QA1 and the time relay SJ4; one branch is connected in series with the power supply side start button QA1 and the time relay SJ4 The normally closed contact of the trip button TA1 and the contactor K1; the normally open contact of the intermediate relay SJ1Z, the normally closed contact of the intermediate relay SJ2Z and the contactor K1 are connected in series on one branch; The normally closed contact of the time relay SJ3 and the contactor K1 are connected in series on the road; the normally open contact of the trip button TA1 and the time relay SJ1 are connected in series on one branch; the normally open contact of the intermediate relay SJ1Z and the contactor K1 are connected in series on one branch. Time relay SJ2; a normally open contact of intermediate relay SJ2Z and time relay SJ3 connected in series on one branch; normally open contact of time relay SJ1 and intermediate relay SJ1Z connected in series on one branch; normally open contact of time relay SJ2 connected in series on one branch Open contacts and intermediate relay SJ2Z.

The load-side control loop includes nine branches connected in parallel on the live wire and the neutral wire, one branch is connected in series with the load-side start button QA2 and the contactor K2; one branch is connected in series with the normally open contact of the contactor K2 and the trip button The normally closed contact of TA2 and the contactor K2; the normally open contact of the intermediate relay SJ5Z, the normally closed contact of the intermediate relay SJ6Z and the contactor K2 are connected in series on one branch; the time relay SJ7 is connected in series on one branch The normally open contact and the contactor K2; a normally open contact with a trip button TA2 in series and a time relay SJ5 on one branch; a normally open contact with an intermediate relay SJ5Z and a time relay SJ6 connected in series on one branch; There are normally open contacts of the intermediate relay SJ6Z and the time relay SJ7 in series on the road; a normally open contact of the time relay SJ5 and the intermediate relay SJ5Z are connected in series on one road; a normally open contact of the time relay SJ6 and the intermediate relay are connected in series on one road SJ6Z.

The section switch opening time test module includes an accumulator, the input end of the accumulator is connected to the normally open contact of the relay J1 and simultaneously connected to the normally closed contact of the relay J2, and the two ends of the relay J1 are directly connected to the 220V power supply , Relay J2 is connected to 220V power supply after being connected in series with the normally closed contact of the subsection switch auxiliary contact.

The adjustable voltage and current output module includes a voltage regulator, the output end of the voltage regulator is connected in series with a switch K, a sliding wire rheostat R1, a sliding wire rheostat R2 and an ammeter;

The analog switch includes six terminals, the six terminals are externally integrated into an analog switch interface, the normally open contact of the relay J is connected between the 1 and 2 terminals, the 3 and 4 terminals are suspended, and the 5 and 6 terminals are connected in parallel with an indication Light T3 and relay J.

The beneficial effects of the utility model:

The utility model can realize the logic verification of the voltage-time type power distribution terminal, the test of the closing peak current of the section switch, the test of the opening time of the section switch, and the test of the auxiliary function of remote measurement and remote communication.

Description of drawings

Fig. 1 is the circuit diagram of the control loop;

Figure 2 is the main circuit diagram of the contactor;

Fig. 3 is a diagram of the output end of the power supply;

Fig. 4 is a timing diagram of delayed closing;

Fig. 5 is the timing diagram of X time limit locking;

Figure 6 is a timing diagram of voltage blocking on both sides;

Fig. 7 is the timing diagram of Y time limit locking;

Fig. 8 is a test circuit diagram of the section switch opening time;

Figure 9 is a test diagram of the closing peak current;

Fig. 10 is a circuit diagram of remote signal telemetry test;

Figure 11 is a circuit diagram of an analog switch;

Figure 12 is a diagram of the analog switch interface.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Voltage time logic tester, including power distribution terminal logic test module, section switch opening time test module, closing peak current test module and remote signaling and telemetry auxiliary test module;

The power distribution terminal logic test module includes a control loop, the contactor in the control loop is connected to the main output loop of the contactor, and the main output loop of the contactor is connected to the output end of the power supply;

The section switch opening time test module includes a timer, and the timer automatically records the switch opening time;

As shown in Figure 9, the closing peak current test module includes a current transformer connected in series on the output port of the power distribution terminal, and the closing peak current is measured by an ammeter;

The remote signaling and telemetry auxiliary test module includes an adjustable voltage and current output module and an analog switch. The adjustable voltage and current output module outputs adjustable voltage and current, and cooperates with the analog switch to complete the telemetry and remote signaling function test.

The power distribution terminal logic test module, the section switch opening time test module, the closing peak current test module and the remote signaling and telemetry auxiliary test module are integrated in the same portable box; the power distribution terminal logic test module, the section The switch opening time test module and the switch peak current test module share a power supply interface.

As shown in Figure 1, the control loop includes a power supply side control loop and a load side control loop connected in series on the main line, two main air switches G1 and G2 are connected in series on the main line, and an indicator light T0 is connected to the main line; Including the live wire and the neutral wire; by setting the time relay, the precise output of voltage pulses on the power supply side and the load side of the power distribution terminal can be realized, thereby simulating the voltage change of the power distribution terminal under various fault conditions of the line, and realizing the logic test of the power distribution terminal

The control loop on the power supply side includes nine branches connected in parallel on the live wire and the neutral wire, one branch is connected in series with the power supply side start button QA1 and the time relay SJ4; one branch is connected in series with the power supply side start button QA1 and the time relay SJ4 The normally closed contact of the trip button TA1 and the contactor K1; the normally open contact of the intermediate relay SJ1Z, the normally closed contact of the intermediate relay SJ2Z and the contactor K1 are connected in series on one branch; The normally closed contact of the time relay SJ3 and the contactor K1 are connected in series on the road; the normally open contact of the trip button TA1 and the time relay SJ1 are connected in series on one branch; the normally open contact of the intermediate relay SJ1Z and the contactor K1 are connected in series on one branch. Time relay SJ2; a normally open contact of intermediate relay SJ2Z and time relay SJ3 connected in series on one branch; normally open contact of time relay SJ1 and intermediate relay SJ1Z connected in series on one branch; normally open contact of time relay SJ2 connected in series on one branch Open contacts and intermediate relay SJ2Z.

The load-side control loop includes nine branches connected in parallel on the live wire and the neutral wire, one branch is connected in series with the load-side start button QA2 and the contactor K2; one branch is connected in series with the normally open contact of the contactor K2 and the trip button The normally closed contact of TA2 and the contactor K2; the normally open contact of the intermediate relay SJ5Z, the normally closed contact of the intermediate relay SJ6Z and the contactor K2 are connected in series on one branch; the time relay SJ7 is connected in series on one branch The normally open contact and the contactor K2; a normally open contact with a trip button TA2 in series and a time relay SJ5 on one branch; a normally open contact with an intermediate relay SJ5Z and a time relay SJ6 connected in series on one branch; There are normally open contacts of the intermediate relay SJ6Z and the time relay SJ7 in series on the road; a normally open contact of the time relay SJ5 and the intermediate relay SJ5Z are connected in series on one road; a normally open contact of the time relay SJ6 and the intermediate relay are connected in series on one road SJ6Z.

As shown in Figure 2-3, the main output circuit of the contactor includes the circuit where the contactors K1 and K2 are located. The contactor K1 is connected to ports 1 and 3 of the output end of the power supply. The main output circuit of the contactor where the contactor K1 is located is 1 and 3. An indicator light T1 is also connected between the ports, the contactor K2 is connected to ports 2 and 3 of the output end of the power supply, and an indicator light T2 is also connected between ports 2 and 3 of the main output circuit of the contactor where the contactor K2 is located.

As shown in Figure 8, the sub-section switch opening time test module includes an accumulator, the input end of the accumulator is connected to the normally open contact of the relay J1 and simultaneously connected to the normally closed contact of the relay J2, and the input of the accumulator is connected to the normally closed contact of the relay J2. Both ends are directly connected to the 220V power supply, and the relay J2 is connected to the 220V power supply after being connected in series with the normally closed contact of the auxiliary contact of the section switch.

As shown in Figure 10, the adjustable voltage and current output module includes a voltage regulator, the output end of the voltage regulator is connected in series with a switch K, a sliding wire rheostat R1, a sliding wire rheostat R2 and an ammeter;

As shown in Figure 11-12, the analog switch includes six terminals, and the six terminals are externally integrated into an analog switch interface, the normally open contact of the relay J is connected between the 1 and 2 terminals, the 3 and 4 terminals are suspended, and the 5 An indicator light T3 and a relay J are connected in parallel between terminals 6 and 6. The six terminals of the analog switch correspond to the six terminals of the analog switch interface respectively.

Voltage time type logic tester test methods including,

Conduct power distribution terminal logic test, including delay closing logic test, X time limit blocking test, voltage blocking test on both sides, and Y time limit blocking test;

Carry out the section switch opening time test, automatically record the section switch opening time value, if the section switch opening time value is greater than the substation switch reclosing time, the section switch opening time is normal;

The section switch opening time test is used to test the section switch opening time to ensure that the opening time is greater than the reclosing time of the substation switch. In order to avoid that the section switch has not been disconnected when the line recloses successfully, it directly recloses at the fault point. Use a special test cable to connect the device with the section switch and the terminal. After the switch is opened, the time displayed on the accumulator is the switch opening time.

When using the segmented terminal logic test device for logic testing, the cumulative timer will automatically record the switch opening time value (the working principle of the cumulative timer, there are two groups of electric shocks on it, the start contact and the pause contact, when the start contact When the two points are connected, the accumulator will automatically enter the timing state. When the pause contact is connected, the accumulator will automatically enter the pause state and display the value. It will be automatically cleared and restarted when it is restarted next time) (segmentation The switch auxiliary contact is the internal indication contact of the switch, the auxiliary contact is also connected when the switch is closed, and the contact is opened when the switch is closed). The time is accurate to 0.01S, which is the time from line voltage loss to switch auxiliary contact opening.

Perform the closing peak current test. During the closing process of the section switch, the maximum current value in this process is automatically recorded. If the maximum current value meets the capacity requirements of the closing relay and insurance, the closing peak current test is normal; the switch During the closing process, the peak current meter will automatically record the maximum current during this process.

Carry out remote signaling and telemetry auxiliary test, by changing the state of the analog switch, observing the closing situation of the section switch, and judging the correctness of the remote signaling and telemetry function.

When performing the delay closing logic test, as shown in Figure 1, Figure 4 and Figure 11, there is voltage on the power supply side of the segment terminal (voltage time type power distribution terminal), and the terminal delays closing (the specific time can be set by yourself, this Explanation Take the X time limit of 7s as an example), set the time of the "X time limit test" time relay SJ4 to 5 minutes, close the "total power" circuit breaker G1, G2, press the "power side start" button QA1, and observe the section switch indication Light T3, if the section switch closes with delay, the terminal lock light (included with the terminal equipment) is off, indicating that the terminal delay close logic is normal.

When performing the X-time limit locking test, as shown in Figure 1, Figure 5 and Figure 11, the power supply side of the terminal loses power within the X time limit, and the terminal is locked at this time, and the power-side incoming call terminal is closed with a delay; the load-side incoming call terminal remains blocked. The switch is not closed.

Set the time of "X time limit test" time relay SJ4 to 5 minutes, the time of "first reclosing" time relay SJ1 to 2s, the time of "output time after reclosing" time relay SJ2 to 5s, and the time of "second reclosing" time relay The time of SJ3 is 2s, turn on the power, press the "power side start" button QA1, the tester "power side voltage" indicator T1 (in Figure 2) lights up, wait for the section switch to close for 5s and then press the "fault occurrence" button TA1, the section switch indicator T3 (in Figure 11) is off, after about 16s the section switch indicator light turns on, observe the terminal lock light from off to always on and then off again, then the X lock logic is normal.

When carrying out the voltage blocking test on both sides, as shown in Figure 1 and Figure 6, in order to prevent misoperation, both sides of the segment switch are pressed at the same time, and the terminal is designed with a voltage blocking function on both sides. The switch is not closed to ensure the safe operation of the distribution network.

Start the "total power supply" circuit breaker G1, G2, start the equipment, press the "power side start" button QA1, and quickly press the "load side start" button QA2, observe that the blocking light of the segment terminal becomes constant, and the segment switch If the indicator light is off, the locking logic of the pressure on both sides of the terminal is normal.

When performing the Y time limit lock test, as shown in Figure 1 and Figure 7, after the switch is closed to determine whether there is an accident, the terminal will count the Y time limit. The incoming call switch will not be closed, and the incoming call switch on the load side will be closed with a delay.

Set the time of "X time limit test" time relay SJ4 to 5 minutes, the time of "one-time reclosing" time relay SJ1 to 2s, the time of "output time after reclosing" time relay SJ2 to 8s, the time of "second reclosing" time relay SJ3 2s, turn on the power, press the "power side start" button QA1, the tester "power side voltage" indicator T1 (in Figure 2) lights up, wait for the section switch to close for 5s and then press the "fault occurrence" button TA1, Observe the indicator light of the section switch and the terminal. If the indicator light of the section switch has gone through the action process of opening, closing, and opening, and the terminal locking light changes from off to always on, it proves that the terminal Y time limit locking logic is normal.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (7)

1. The voltage-time logic tester is characterized in that it includes a power distribution terminal logic test module, a section switch opening time test module, a closing peak current test module, and a remote signaling and telemetry auxiliary test module; The power distribution terminal logic test module includes a control loop, the contactor in the control loop is connected to the main output loop of the contactor, and the main output loop of the contactor is connected to the output end of the power supply; The section switch opening time test module includes a timer, and the timer automatically records the switch opening time; The closing peak current test module includes a current transformer connected in series on the output port of the power distribution terminal, and the closing peak current is measured by an ammeter; The remote signaling and telemetry auxiliary test module includes an adjustable voltage and current output module and an analog switch. The adjustable voltage and current output module outputs adjustable voltage and current, and cooperates with the analog switch to complete the telemetry and remote signaling function test. 2. voltage time type logic tester as claimed in claim 1, is characterized in that, described power distribution terminal logic test module, section switch opening time test module, closing peak current test module and remote signal telemetry auxiliary test module Integrated in the same portable box; the power distribution terminal logic test module, the section switch opening time test module and the closing peak current test module share a power supply interface. 3. voltage-time type logic tester as claimed in claim 1, is characterized in that, described control loop comprises the power supply side control loop and the load side control loop that are connected in series on the main line, and two main air switches G1 and G1 are connected in series on the main line. G2, the indicator light T0 is connected to the main line; the main line includes the live line and the neutral line; the precise output of voltage pulses on the power supply side and the load side of the power distribution terminal is realized by setting the time relay, thereby simulating the power distribution terminal of the line under various fault states Realize the logic test of the power distribution terminal. 4. voltage time type logic tester as claimed in claim 3, it is characterized in that, described power supply side control circuit comprises nine branch circuits connected in parallel on live wire and neutral wire, and on one branch, there are power supply side start button QA1 and time Relay SJ4; one branch is connected in series with the start button QA1 on the power supply side, the normally closed contact of the time relay SJ4, the normally closed contact of the trip button TA1 and the contactor K1; one branch is connected in series with the normally open contact of the intermediate relay SJ1Z point, the normally closed contact of the intermediate relay SJ2Z and the contactor K1; the normally closed contact of the time relay SJ3 and the contactor K1 are connected in series on one branch; the normally open contact of the trip button TA1 is connected in series on one branch and time relay SJ1; one circuit has the normally open contact of the intermediate relay SJ1Z and the time relay SJ2 in series; one circuit has the normally open contact of the intermediate relay SJ2Z and the time relay SJ3 in series; one circuit has the time relay SJ1 in series The normally open contact and the intermediate relay SJ1Z; the normally open contact of the time relay SJ2 and the intermediate relay SJ2Z are connected in series on one branch. 5. Voltage time type logic tester as claimed in claim 3, it is characterized in that, said load side control circuit comprises nine branch circuits connected in parallel on live wire and neutral wire, and a load side start button QA2 and contactor are connected in series on one branch. The normally open contact of the contactor K2, the normally closed contact of the trip button TA2 and the contactor K2 are connected in series on one branch; the normally open contact of the intermediate relay SJ5Z and the contact of the intermediate relay SJ6Z are connected in series on one branch. A normally closed contact and the contactor K2; a normally open contact with a time relay SJ7 and the contactor K2 connected in series on one branch; a normally open contact and a time relay SJ5 connected in series with a trip button TA2 on one branch; The normally open contacts of the intermediate relay SJ5Z and the time relay SJ6 are connected in series on one branch; the normally open contacts of the intermediate relay SJ6Z and the time relay SJ7 are connected in series on one branch; the normally open contacts of the time relay SJ5 and the intermediate Relay SJ5Z; a normally open contact of time relay SJ6 and intermediate relay SJ6Z are connected in series on one branch. 6. The voltage-time logic tester as claimed in claim 1, wherein the subsection switch opening time test module comprises a time accumulator, and the input end of the accumulator is connected to the normally open contact of the relay J1 Connect the normally closed contact of the relay J2 at the same time, the two ends of the relay J1 are directly connected to the 220V power supply, and the relay J2 is connected in series with the normally closed contact of the auxiliary contact of the section switch and then connected to the 220V power supply. 7. voltage-time type logic tester as claimed in claim 1, is characterized in that, adjustable voltage and current output module comprises voltage regulator, and the output terminal of described voltage regulator is connected in series switch K, slide wire rheostat R1, slide wire rheostat R2 and ammeter; The analog switch includes six terminals, the six terminals are externally integrated into an analog switch interface, the normally open contact of the relay J is connected between the 1 and 2 terminals, the 3 and 4 terminals are suspended, and the 5 and 6 terminals are connected in parallel with an indication Light T3 and relay J.