CN109580211B - Mechanical characteristic test system of high-voltage circuit breaker - Google Patents
Mechanical characteristic test system of high-voltage circuit breaker Download PDFInfo
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- CN109580211B CN109580211B CN201910074240.9A CN201910074240A CN109580211B CN 109580211 B CN109580211 B CN 109580211B CN 201910074240 A CN201910074240 A CN 201910074240A CN 109580211 B CN109580211 B CN 109580211B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
Abstract
The invention relates to a mechanical characteristic test system of a high-voltage circuit breaker, wherein a sub-channel of a tester in the system is connected with one end of a second normally open switch, the other end of the second normally open switch is connected with a first test wire joint, a combined channel of the tester is connected with one end of a fifth normally open switch, the other end of the fifth normally open switch is connected with a second test wire joint, and a common channel of the tester is connected with a third test wire joint through a test wire; the invention automatically switches the test channel during testing by arranging the control circuit, realizes one-key testing, enables an operator to start the test system by pressing the contact switch by one key, simultaneously controls each loop in a matched manner by the relay, and effectively ensures that the test instrument is effectively protected from being damaged when the first relay controls the on-channel to be disconnected and the second relay controls the off-channel to be disconnected during testing the on-channel when the first relay controls the on-channel and the second relay controls the off-channel to be disconnected during testing the on-channel.
Description
Technical Field
The invention relates to the field of power equipment testing devices, in particular to a mechanical characteristic testing system of a high-voltage circuit breaker.
Background
The mechanical characteristic test of the high-voltage circuit breaker comprises a time parameter test of the circuit breaker, an action voltage test of a switching-on and switching-off electromagnet, a speed characteristic test of the circuit breaker and the like, and is characterized in that wiring needs to be carried out on a control circuit of the circuit breaker, and the test wiring needs to be replaced for multiple times in the test process; because other secondary circuits exist on the terminal strip where the circuit breaker control circuit is located, special caution is needed in the wiring process to prevent the secondary circuit from short circuit or grounding caused by wrong terminals.
At present, a common practice is to set a change-over switch on a test wire, and after each test wire is connected, the gear of the change-over switch is changed to switch over test items, but the test still needs manual switching, and one-key operation cannot be realized.
Disclosure of Invention
The invention provides a mechanical characteristic test system of a high-voltage circuit breaker, aiming at overcoming the defect that the mechanical characteristic test of the high-voltage circuit breaker in the prior art can not realize one-key operation.
The system comprises a tester, a first relay, a second relay, a first time relay, a second time relay, a third time relay, a contact switch, a direct-current power supply, a first test wire connector, a second test wire connector and a third test wire connector;
the first relay comprises a first normally open switch, a second normally open switch, a first coil and a fourth normally closed switch;
the second relay comprises a fourth normally open switch, a fifth normally open switch, a second normally closed switch and a fourth coil;
the first time relay comprises a first normally closed switch and a first delayer;
the second time relay comprises a third normally open switch and a second delayer;
the third time relay comprises a third normally closed switch and a third delayer;
the tester comprises a branch channel, a combined channel and a public channel;
the branch channel of the tester is connected with one end of a second normally open switch through a test wire, the other end of the second normally open switch is connected with a first test wire joint through a test wire, the combined channel of the tester is connected with one end of a fifth normally open switch through a test wire, the other end of the fifth normally open switch is connected with a second test wire joint through a test wire, and the common channel of the tester is connected with a third test wire joint through a test wire;
one end of the contact switch is connected with the positive electrode of the direct-current power supply, the other end of the contact switch is connected with one end of a first normally closed switch, the other end of the first normally closed switch is connected with one end of a first coil, the other end of the first coil is connected with the negative electrode of the direct-current power supply, and the first normally open switch is connected with the contact switch in parallel;
one end of a second normally open switch is connected with the positive electrode of the direct current power supply, the other end of the second normally open switch is connected with one end of a second normally closed switch, the other end of the second normally closed switch is connected with one end of a first delayer, the other end of the first delayer is connected with the negative electrode of the direct current power supply, and the second delayer is connected with the first delayer in parallel;
one end of a third normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the third normally-open switch is connected with one end of a third normally-closed switch, the other end of the third normally-closed switch is connected with one end of a fourth coil, and the fourth normally-open switch is connected with the third normally-open switch in parallel;
one end of a fifth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the fifth normally-open switch is connected with one end of a fourth normally-closed switch, the other end of the fourth normally-closed switch is connected with one end of a third delayer, and the other end of the third delayer is connected with the negative electrode of the direct-current power supply;
the delay time of the first time relay is equal to the delay time of the third time relay and is less than the delay time of the second time relay; the channel closing test can be carried out after the branch channels are completely disconnected, and the tester can be prevented from being damaged.
The invention automatically switches the testing channel during testing by arranging the control circuit, realizes one-key testing, enables an operator to start the testing system by pressing the contact switch by one key, simultaneously controls each loop in a matched manner by the relay, ensures that the first relay controls the on-channel to be disconnected when the testing is divided into channels, and the second relay controls the off-channel to be disconnected when the testing is divided into channels, and effectively protects the tester from being damaged when the testing is divided into channels, can operate by one key, is convenient and efficient, and can effectively save manual operation,
preferably, the test system further comprises a first current sensor, a second current sensor, an alarm, a third relay, a fourth relay, a fifth relay and a sixth relay;
the first current sensor is used for measuring whether current exists between the sub-channel and the second normally-open switch;
the second current sensor is used for measuring whether current exists between the closed channel and the fifth normally-open switch or not;
the first relay further comprises a sixth normally open switch and a sixth normally closed switch;
the second relay further comprises a tenth normally open switch and a fifth normally closed switch;
the first current sensor comprises a first sensing switch and a fourth sensing switch;
the second current sensor comprises a second sensing switch and a third sensing switch;
the third relay comprises a seventh normally open switch, an eighth normally open switch and a sixth coil;
the fourth relay comprises a ninth normally open switch and a seventh coil;
the fifth relay comprises an eleventh normally open switch, a twelfth normally open switch and an eighth coil;
the sixth relay comprises a thirteenth normally open switch and a ninth coil;
one end of a sixth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the sixth normally-open switch is connected with one end of a fifth normally-closed switch, the other end of the fifth normally-closed switch is connected with one end of a sixth coil, the other end of the sixth coil is connected with the negative electrode of the direct-current power supply, and the seventh normally-open switch is connected with the sixth normally-open switch in parallel;
one end of the eighth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the eighth normally-open switch is connected with one end of the first current sensor, and the other end of the first current sensor is connected with the negative electrode of the direct-current power supply;
one end of the first sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the first sensing switch is connected with one end of the seventh coil, the other end of the seventh coil is connected with the negative electrode of the direct-current power supply, and the ninth normally-open switch is connected with the first sensing switch in parallel;
one end of a tenth normally open switch is connected with the positive electrode of the direct current power supply, the other end of the tenth normally open switch is connected with one end of a sixth normally closed switch, the other end of the sixth normally closed switch is connected with the negative electrode of the direct current power supply, and the eleventh normally open switch is connected with the tenth normally open switch in parallel;
one end of the twelfth normally open switch is connected with the positive electrode of the power supply, the other end of the twelfth normally open switch is connected with one end of the second current sensor, and the other end of the second current sensor is connected with the negative electrode of the direct-current power supply;
one end of the second sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the second sensing switch is connected with one end of the ninth coil, the other end of the ninth coil is connected with the negative electrode of the direct-current power supply, and the thirteenth normally-open switch is connected with the second sensing switch in parallel;
one end of the third sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the third sensing switch is connected with one end of the alarm, the other end of the alarm is connected with the negative electrode of the direct-current power supply, and the fourth sensing switch is connected with the third sensing switch in parallel.
According to the invention, the current sensor is additionally arranged to detect the channel which is not tested, if the channel which is not detected has current passing, the abnormal condition is caused, at the moment, the current sensor starts the current sensing switch, the alarm is turned on to give an alarm, and the worker is prompted to test abnormally.
Preferably, the fourth relay further includes a seventh normally-closed switch and a ninth normally-closed switch, and the sixth relay further includes an eighth normally-closed switch and a tenth normally-closed switch;
the seventh normally closed switch and the eighth normally closed switch are connected in series and are connected between the second normally closed switch and the first delayer;
the ninth normally closed switch and the tenth normally closed switch are connected in series and are connected between the fourth normally closed switch and the third delayer.
By additionally arranging the normally closed switches, each channel switch is timely disconnected when the test is abnormal, so that the tester is free from damage.
Preferably, the testing system further comprises a processor, the processor is connected with the tester, and the testing result is output to the processor through the tester to be comprehensively processed, summarized and displayed, so that the intelligence of the system can be improved, and manual operation can be reduced.
Preferably, the delay time of the first time relay and the third time relay is three seconds, and the delay time of the second time relay is four seconds.
Preferably, the alarm is a buzzer.
Preferably, the direct current power supply is a 24V direct current power supply.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the invention can realize one-key operation, can reduce manual operation, and can ensure the safe operation of the test system by the mutual cooperation of the relays.
Drawings
FIG. 1 is a schematic diagram of the test system of example 1.
Fig. 2 is an electrical control schematic diagram of the test system described in example 1.
FIG. 3 is a schematic structural diagram of the experimental system described in example 2.
Fig. 4 is an electrical control schematic diagram of the test system described in example 2.
Wherein, K1 is a contact switch, KM1(1) is a first normally open switch, KM1(2) is a second normally open switch, KT2 is a third normally open switch, KM2(1) is a fourth normally open switch, KM2(2) is a fifth normally open switch, KM1(3) is a sixth normally open switch, KM3(1) is a seventh normally open switch, KM3(2) is an eighth normally open switch, TA1(1) is a first sensing switch, KM4 is a ninth normally open switch, KM2(3) is a tenth normally open switch, KM5(1) is an eleventh normally open switch, KM5(2) is a twelfth normally open switch, TA2(1) is a second sensing switch, KM6 is a thirteenth normally open switch, TA2 (KT 2) is a third sensing switch, TA1(2) is a fourth sensing switch, TA1(1) is a first normally open switch, KM1 (594) is a fourth normally closed switch, KM 594) is a fifth normally closed switch, KM 599 is a fifth normally closed switch, the KM1(5) is a sixth normally closed switch, the KM4(1) is a seventh normally closed switch, the KM6(1) is an eighth normally closed switch, the KM4(2) is a ninth normally closed switch, the KM6(2) is a tenth normally closed switch, the KM1 is a first coil, the KT1 is a first delayer, the KT2(1) is a second delayer, the KT3 is a third delayer, the KM3 is a sixth coil, the TA1 is a first current sensor, the KM4(3) is a seventh coil, the KM5 is an eighth coil, the TA2 is a second current sensor, and the KM6(3) is a ninth coil.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1:
the present embodiment provides a mechanical characteristic testing system of a high voltage circuit breaker, as shown in fig. 1-2, the system includes a tester, a first relay, a second relay, a first time relay, a second time relay, a third time relay, a contact switch K1, a 24V dc power supply, a first test line connector, a second test line connector, and a third test line connector;
the first relay comprises a first normally open switch KM1(1), a second normally open switch KM1(2), a first coil KM1 and a fourth normally closed switch KM1 (4);
the second relay comprises a fourth normally open switch KM2(1), a fifth normally open switch KM2(2), a second normally closed switch KM2(4) and a fourth coil KM 2;
the first time relay comprises a first normally closed switch KT1(1) and a first time delay KT 1;
the second time relay comprises a third normally open switch KT2 and a second delayer KT2 (1);
the third time relay comprises a third normally-closed switch KT3(1) and a third time delay KT 3;
the tester comprises a branch channel, a combined channel and a public channel;
as shown in fig. 1, the branch channel of the tester is connected with one end of a second normally open switch through a test line, the other end of the second normally open switch KM1(2) is connected with a first test line joint through a test line, the close channel of the tester is connected with one end of a fifth normally open switch KM2(2) through a test line, the other end of the fifth normally open switch KM2(2) is connected with a second test line joint through a test line, and the common channel of the tester is connected with a third test line joint through a test line;
as shown in fig. 2, the electrical wiring principle of the system is: one end of a contact switch K1 is connected with the positive electrode of a direct-current power supply, the other end of the contact switch K1 is connected with one end of a first normally-closed switch KT1(1), the other end of the first normally-closed switch KT1(1) is connected with one end of a first coil KM1, the other end of the first coil KM1 is connected with the negative electrode of the direct-current power supply, and a first normally-open switch KM1(1) is connected with the contact switch in parallel;
one end of a second normally-open switch KM1(2) is connected with the positive electrode of a direct-current power supply, the other end of the second normally-open switch KM1(2) is connected with one end of a second normally-closed switch KM2(4), the other end of the second normally-closed switch KM2(4) is connected with one end of a first delayer KT1, the other end of the first delayer KT1 is connected with the negative electrode of the direct-current power supply, and a second delayer KT2(1) is connected with a first delayer KT1 in parallel;
one end of a third normally-open switch KT2 is connected with the positive electrode of a direct-current power supply, the other end of the third normally-open switch KT2 is connected with one end of a third normally-closed switch KT3(1), the other end of the third normally-closed switch KT3(1) is connected with one end of a fourth coil KM2, and a fourth normally-open switch KM2(1) is connected with a third normally-open switch KT2 in parallel;
one end of a fifth normally-open switch KM2(2) is connected with the positive electrode of the direct-current power supply, the other end of the fifth normally-open switch KM2(2) is connected with one end of a fourth normally-closed switch KM1(4), the other end of the fourth normally-closed switch KM1(4) is connected with one end of a third time delay device KT3, and the other end of the third time delay device KT3 is connected with the negative electrode of the direct-current power supply.
In the specific implementation process, firstly, each test wire joint is connected into a terminal to be tested, then a worker touches a contact switch to start, a first coil is electrified to control a first normally-open switch KM1(1) to be closed for self-locking, and simultaneously, a second normally-open switch KM1(2) is closed, namely, a channel-dividing test is closed, a first delayer KT1 is started for time delay, after the time is up, the first normally-closed switch KT1(1) is started to disconnect a first relay, so that a second normally-open switch KM1(2) is disconnected, the channel-dividing test is finished, as the time limit set by the second delayer KT2(1) is longer than that of the first delayer KT1, the channel-dividing test is firstly disconnected, a third normally-open switch KT2 is started to electrify a fourth coil KM2, and a fourth coil KM2 is electrified to control a fourth normally-open switch KM2(1) to carry out self-locking, a fifth normally-open switch KM2(2), and meanwhile, the second normally-closed switch KM2(4) is controlled to be disconnected again, a loop where the second normally-open switch KM1(2) is located is ensured, the safe operation of the tester is ensured, the fifth normally-open switch KM2(2) is closed and the third time delayer KT3 is started to time, after the time is up, the third relay controls the third normally-closed switch KT3(1) to be disconnected with the fourth coil KM2, so that the fifth normally-open switch KM2(2) is disconnected, and the test is ended.
Example 2:
the present embodiment provides a mechanical characteristic testing system for a high voltage circuit breaker, as shown in fig. 3 to 4, the system includes a tester, a first relay, a second relay, a first time relay, a second time relay, a third time relay, a contact switch K1, a dc power supply, a first test line connector, a second test line connector, and a third test line connector;
the first relay comprises a first normally open switch KM1(1), a second normally open switch KM1(2), a first coil KM1 and a fourth normally closed switch KM1 (4);
the second relay comprises a fourth normally open switch KM2(1), a fifth normally open switch KM2(2), a second normally closed switch KM2(4) and a fourth coil KM 2;
the first time relay comprises a first normally closed switch KT1(1) and a first time delay KT 1;
the second time relay comprises a third normally open switch KT2 and a second delayer KT2 (1);
the third time relay comprises a third normally-closed switch KT3(1) and a third time delay KT 3;
the tester comprises a branch channel, a combined channel and a public channel;
as shown in fig. 3, the branch channel of the tester is connected with one end of a second normally open switch through a test line, the other end of the second normally open switch KM1(2) is connected with a first test line joint through a test line, the close channel of the tester is connected with one end of a fifth normally open switch KM2(2) through a test line, the other end of the fifth normally open switch KM2(2) is connected with a second test line joint through a test line, and the common channel of the tester is connected with a third test line joint through a test line;
as shown in fig. 4, the electrical wiring principle of the system is: one end of a contact switch K1 is connected with the positive electrode of a direct-current power supply, the other end of the contact switch K1 is connected with one end of a first normally-closed switch KT1(1), the other end of the first normally-closed switch KT1(1) is connected with one end of a first coil KM1, the other end of the first coil KM1 is connected with the negative electrode of the direct-current power supply, and a first normally-open switch KM1(1) is connected with the contact switch in parallel;
one end of a second normally-open switch KM1(2) is connected with the positive electrode of a direct-current power supply, the other end of the second normally-open switch KM1(2) is connected with one end of a second normally-closed switch KM2(4), the other end of the second normally-closed switch KM2(4) is connected with one end of a first delayer KT1, the other end of the first delayer KT1 is connected with the negative electrode of the direct-current power supply, and a second delayer KT2(1) is connected with a first delayer KT1 in parallel;
one end of a third normally-open switch KT2 is connected with the positive electrode of a direct-current power supply, the other end of the third normally-open switch KT2 is connected with one end of a third normally-closed switch KT3(1), the other end of the third normally-closed switch KT3(1) is connected with one end of a fourth coil KM2, and a fourth normally-open switch KM2(1) is connected with a third normally-open switch KT2 in parallel;
one end of a fifth normally-open switch KM2(2) is connected with the positive electrode of the direct-current power supply, the other end of the fifth normally-open switch KM2(2) is connected with one end of a fourth normally-closed switch KM1(4), the other end of the fourth normally-closed switch KM1(4) is connected with one end of a third time delay device KT3, and the other end of the third time delay device KT3 is connected with the negative electrode of the direct-current power supply.
The delay time of the first time relay is equal to the delay time of the third time relay and is less than the delay time of the second time relay.
The test system also comprises a first current sensor, a second current sensor, an alarm, a third relay, a fourth relay, a fifth relay and a sixth relay;
the first current sensor TA1 is used for measuring whether current flows between the branch channel and the second normally open switch;
the second current sensor TA2 is used for measuring whether current flows between the closed channel and the fifth normally-open switch;
the first relay further comprises a sixth normally open switch KM1(3) and a sixth normally closed switch KM1 (5);
the second relay further comprises a tenth normally open switch KM2(3) and a fifth normally closed switch KM2 (5);
the first current sensor comprises a first sensing switch TA1(1), a fourth sensing switch TA1 (2);
the second current sensor comprises a second sensing switch TA2(1), a third sensing switch TA2 (2);
the third relay comprises a seventh normally open switch KM3(1), an eighth normally open switch KM3(2) and a sixth coil KM 3;
the fourth relay comprises a ninth normally open switch KM4 and a seventh coil KM4 (3);
the fifth relay comprises an eleventh normally open switch KM5(1), a twelfth normally open switch KM5(2) and an eighth coil KM 5;
the sixth relay includes a thirteenth normally open switch KM6, a ninth coil KM6 (3);
one end of a sixth normally-open switch KM1(3) is connected with the positive electrode of the direct-current power supply, the other end of the sixth normally-open switch KM1(3) is connected with one end of a fifth normally-closed switch KM2(5), the other end of the fifth normally-closed switch KM2(5) is connected with one end of a sixth coil KM3, the other end of the sixth coil KM3 is connected with the negative electrode of the direct-current power supply, and a seventh normally-open switch KM3(1) is connected with a sixth normally-open switch KM1(3) in;
one end of an eighth normally-open switch KM3(2) is connected with the positive electrode of the direct-current power supply, the other end of the eighth normally-open switch KM3 is connected with one end of a first current sensor TA1, and the other end of the first current sensor TA1 is connected with the negative electrode of the direct-current power supply;
one end of a first sensing switch TA1(1) is connected with the positive electrode of the direct-current power supply, the other end of the first sensing switch TA1(1) is connected with one end of a seventh coil KM4(3), the other end of the seventh coil KM4(3) is connected with the negative electrode of the direct-current power supply, and a ninth normally open switch KM4 is connected with the first sensing switch TA1(1) in parallel;
one end of a tenth normally open switch KM2(3) is connected with the positive electrode of the direct-current power supply, the other end of the tenth normally open switch KM2(3) is connected with one end of a sixth normally closed switch KM1(5), the other end of the sixth normally closed switch KM1(5) is connected with the negative electrode of the direct-current power supply, and an eleventh normally open switch KM5(1) is connected with a tenth normally open switch KM2(3) in parallel;
one end of a twelfth normally open switch KM5(2) is connected with the positive electrode of the power supply, the other end of the twelfth normally open switch KM5 is connected with one end of a second current sensor TA2, and the other end of the second current sensor TA2 is connected with the negative electrode of the direct-current power supply;
one end of a second sensing switch TA2(1) is connected with the positive electrode of the direct-current power supply, the other end of the second sensing switch TA2(1) is connected with one end of a ninth coil KM6(3), the other end of the ninth coil KM6(3) is connected with the negative electrode of the direct-current power supply, and a thirteenth normally open switch KM6 is connected with the second sensing switch TA2(1) in parallel;
one end of the third sensing switch TA2(2) is connected with the positive pole of the direct-current power supply, the other end of the third sensing switch TA2(2) is connected with one end of the alarm, the other end of the alarm is connected with the negative pole of the direct-current power supply, and the fourth sensing switch TA1(2) is connected with the third sensing switch TA2(2) in parallel.
The alarm is a buzzer.
The direct current power supply is a 24V direct current power supply.
The fourth relay further includes a seventh normally-closed switch KM4(1) and a ninth normally-closed switch KM4(2), and the sixth relay further includes an eighth normally-closed switch KM6(1) and a tenth normally-closed switch KM6 (2);
the seventh normally closed switch KM4(1) and the eighth normally closed switch KM6(1) are connected in series and are connected between the second normally closed switch KM2(4) and the first delayer KT 1;
the ninth normally closed switch KM4(2) and the tenth normally closed switch KM6(2) are connected in series and are connected between the fourth normally closed switch KM1(4) and the third time delay unit KT 3;
the testing system also comprises a processor, and the processor is connected with the tester.
The time delay of the first time relay and the third time relay is three seconds, and the time delay of the second time relay is four seconds.
In the specific implementation process, firstly, each test wire connector is connected into a terminal to be tested, then a worker touches a contact switch to start a test system, a first coil KM1 is powered on, a second normally-open switch KM1(2) is controlled to be closed to perform a channel division test, meanwhile, a first time delay KT1 and a second time delay KT2(1) are timed, when the test time reaches three seconds, a first time relay disconnects a first coil KM1 to disconnect a second normally-open switch KM1(2), when the second time delay KT2(1) times to four seconds, a second time relay controls a third normally-open switch KT2 to be closed to enable a fourth coil KM2 to be powered on, a fifth normally-open switch KM2(2) is controlled to be closed, meanwhile, the third time delay KT3 is timed, when the time reaches three seconds, the third time relay controls a third normally-closed switch 3(1) to be disconnected to disconnect, the fifth normally-open switch KM2(2) is switched off, the test is ended, after the test is finished, the tester transmits the data to the processor for summary processing and outputs a test result;
when the branch channel is tested, the first coil KM1 controls the sixth normally-open switch KM1(3) to be closed, the first current sensor TA1 on the branch channel is started, if the TA1 current sensor detects current, the fourth current sensor TA1(2) is closed to control the alarm to give an alarm, meanwhile, the first sensor switch TA1(1) is closed, the seventh coil KM4(3) is electrified, the seventh normally-closed switch KM4(1) and the ninth normally-closed switch KM4(2) are controlled to be disconnected, and when the branch channel is tested to be closed, the second current sensor TA2 is started, and the eighth normally-closed switch KM6(1) and the tenth normally-closed switch KM6(2) are controlled to be alarmed and disconnected in the same manner.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (5)
1. A mechanical characteristic test system of a high-voltage circuit breaker is characterized by comprising a tester, a first relay, a second relay, a first time relay, a second time relay, a third time relay, a contact switch, a direct-current power supply, a first test wire connector, a second test wire connector and a third test wire connector;
the first relay comprises a first normally open switch, a second normally open switch, a first coil and a fourth normally closed switch;
the second relay comprises a fourth normally open switch, a fifth normally open switch, a second normally closed switch and a fourth coil;
the first time relay comprises a first normally closed switch and a first delayer;
the second time relay comprises a third normally open switch and a second delayer;
the third time relay comprises a third normally closed switch and a third delayer;
the tester comprises a branch channel, a combined channel and a public channel;
the branch channel of the tester is connected with one end of a second normally open switch through a test wire, the other end of the second normally open switch is connected with a first test wire joint through a test wire, the combined channel of the tester is connected with one end of a fifth normally open switch through a test wire, the other end of the fifth normally open switch is connected with a second test wire joint through a test wire, and the common channel of the tester is connected with a third test wire joint through a test wire;
one end of the contact switch is connected with the positive electrode of the direct-current power supply, the other end of the contact switch is connected with one end of a first normally closed switch, the other end of the first normally closed switch is connected with one end of a first coil, the other end of the first coil is connected with the negative electrode of the direct-current power supply, and the first normally open switch is connected with the contact switch in parallel;
one end of a second normally open switch is connected with the positive electrode of the direct current power supply, the other end of the second normally open switch is connected with one end of a second normally closed switch, the other end of the second normally closed switch is connected with one end of a first delayer, the other end of the first delayer is connected with the negative electrode of the direct current power supply, and the second delayer is connected with the first delayer in parallel;
one end of a third normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the third normally-open switch is connected with one end of a third normally-closed switch, the other end of the third normally-closed switch is connected with one end of a fourth coil, and the fourth normally-open switch is connected with the third normally-open switch in parallel;
one end of a fifth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the fifth normally-open switch is connected with one end of a fourth normally-closed switch, the other end of the fourth normally-closed switch is connected with one end of a third delayer, and the other end of the third delayer is connected with the negative electrode of the direct-current power supply;
the delay time of the first time relay is equal to the delay time of the third time relay and is less than the delay time of the second time relay;
the test system also comprises a first current sensor, a second current sensor, an alarm, a third relay, a fourth relay, a fifth relay and a sixth relay;
the first current sensor is used for measuring whether current exists between the sub-channel and the second normally-open switch;
the second current sensor is used for measuring whether current exists between the closed channel and the fifth normally-open switch or not;
the first relay further comprises a sixth normally open switch and a sixth normally closed switch;
the second relay further comprises a tenth normally open switch and a fifth normally closed switch;
the first current sensor comprises a first sensing switch and a fourth sensing switch;
the second current sensor comprises a second sensing switch and a third sensing switch;
the third relay comprises a seventh normally open switch, an eighth normally open switch and a sixth coil;
the fourth relay comprises a ninth normally open switch and a seventh coil;
the fifth relay comprises an eleventh normally open switch, a twelfth normally open switch and an eighth coil;
the sixth relay comprises a thirteenth normally open switch and a ninth coil;
one end of a sixth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the sixth normally-open switch is connected with one end of a fifth normally-closed switch, the other end of the fifth normally-closed switch is connected with one end of a sixth coil, the other end of the sixth coil is connected with the negative electrode of the direct-current power supply, and the seventh normally-open switch is connected with the sixth normally-open switch in parallel;
one end of the eighth normally-open switch is connected with the positive electrode of the direct-current power supply, the other end of the eighth normally-open switch is connected with one end of the first current sensor, and the other end of the first current sensor is connected with the negative electrode of the direct-current power supply;
one end of the first sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the first sensing switch is connected with one end of the seventh coil, the other end of the seventh coil is connected with the negative electrode of the direct-current power supply, and the ninth normally-open switch is connected with the first sensing switch in parallel;
one end of a tenth normally open switch is connected with the positive electrode of the direct current power supply, the other end of the tenth normally open switch is connected with one end of a sixth normally closed switch, the other end of the sixth normally closed switch is connected with the negative electrode of the direct current power supply, and the eleventh normally open switch is connected with the tenth normally open switch in parallel;
one end of the twelfth normally open switch is connected with the positive electrode of the power supply, the other end of the twelfth normally open switch is connected with one end of the second current sensor, and the other end of the second current sensor is connected with the negative electrode of the direct-current power supply;
one end of the second sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the second sensing switch is connected with one end of the ninth coil, the other end of the ninth coil is connected with the negative electrode of the direct-current power supply, and the thirteenth normally-open switch is connected with the second sensing switch in parallel;
one end of the third sensing switch is connected with the positive electrode of the direct-current power supply, the other end of the third sensing switch is connected with one end of the alarm, the other end of the alarm is connected with the negative electrode of the direct-current power supply, and the fourth sensing switch is connected with the third sensing switch in parallel;
the fourth relay further comprises a seventh normally-closed switch and a ninth normally-closed switch, and the sixth relay further comprises an eighth normally-closed switch and a tenth normally-closed switch;
the seventh normally closed switch and the eighth normally closed switch are connected in series and are connected between the second normally closed switch and the first delayer;
the ninth normally closed switch and the tenth normally closed switch are connected in series and are connected between the fourth normally closed switch and the third delayer.
2. The mechanical property testing system of the high-voltage circuit breaker according to claim 1, wherein the alarm is a buzzer.
3. The mechanical testing system of claim 1, further comprising a processor, wherein the processor is connected to the tester.
4. The mechanical characteristic test system of a high voltage circuit breaker according to claim 1, wherein the delay time of the first time relay and the third time relay is three seconds, and the delay time of the second time relay is four seconds.
5. The mechanical property testing system of the high voltage circuit breaker according to claim 1, wherein the dc power supply is a 24V dc power supply.
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| CN201910074240.9A CN109580211B (en) | 2019-01-25 | 2019-01-25 | Mechanical characteristic test system of high-voltage circuit breaker |
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| CN201910074240.9A CN109580211B (en) | 2019-01-25 | 2019-01-25 | Mechanical characteristic test system of high-voltage circuit breaker |
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| CN109991011B (en) * | 2019-05-06 | 2023-12-19 | 广西玉柴机器股份有限公司 | Sampling channel switching system of partial flow dilution sampling system |
| CN112379205A (en) * | 2020-11-18 | 2021-02-19 | 东风汽车集团有限公司 | Electrical matching performance test system and test method thereof |
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| CN101344574B (en) * | 2008-08-18 | 2010-09-08 | 天津市电力公司 | Mechanical endurance test instrument for high voltage switch |
| CN201909972U (en) * | 2010-11-10 | 2011-07-27 | 南京因泰莱配电自动化设备有限公司 | Long-term online monitoring device for mechanical properties of high-voltage circuit breaker |
| CN202548291U (en) * | 2012-04-24 | 2012-11-21 | 天津市电力公司 | Special controller for testing mechanical behavior of pole-mounted vacuum automatic distribution switch |
| CN204557894U (en) * | 2015-04-17 | 2015-08-12 | 广东电网有限责任公司阳江供电局 | Mimic-disconnecting switch |
| CN105277880B (en) * | 2015-11-19 | 2018-01-12 | 七星电气股份有限公司 | A kind of switchgear life test control system |
| CN207439671U (en) * | 2017-12-07 | 2018-06-01 | 河北工业大学 | A kind of frame-type circuit breaker mechanical fault diagnosis device based on industrial personal computer |
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