Search

CN-224231921-U - Analog circuit breaker device

CN224231921UCN 224231921 UCN224231921 UCN 224231921UCN-224231921-U

Abstract

The utility model relates to the technical field of power system test equipment, and discloses an analog circuit breaker device. The device can accurately simulate the switching-on and switching-off action, the electrical characteristics and the state indication of the high-voltage circuit breaker through structures such as a switching-on control loop, a switching-off control loop, a switching-on state indication lamp circuit and the like. In addition, the device also comprises an analog spring energy storage circuit, an energy storage state change indicating circuit, an analog manual operation circuit and an air pressure state indicating circuit, and has rich functions. The simulated circuit breaker device has the advantages of small size, light weight, low cost, simplicity in operation and the like, can be widely applied to the fields of power system testing, teaching training and the like, and can effectively improve the testing efficiency and quality and reduce the testing cost and risk.

Inventors

  • LI LONG
  • WANG SHIQIU

Assignees

  • 南京林洋电气有限公司

Dates

Publication Date
20260512
Application Date
20250102

Claims (9)

  1. 1. An analog circuit breaker device is characterized by comprising a closing control loop, a separating state indicating lamp circuit and a closing state indicating lamp circuit; The switching-on control loop and the switching-off control loop comprise a first normally-open relay, a first normally-closed relay and a conversion relay; The split state indicator lamp circuit comprises a first current limiting resistor and a first light emitting diode; The on-position state indicator lamp circuit comprises a second current limiting resistor and a second light emitting diode; The switching relay static contact is respectively connected with the VCC and the first normally-open relay contact, the switching relay normally-closed contact is connected with the first current-limiting resistor, the connection point of the switching relay normally-closed contact and the first current-limiting resistor receives a split signal, the switching relay normally-open contact is connected with the second current-limiting resistor and the first normally-closed relay contact, the connection point of the switching relay normally-open contact and the second current-limiting resistor and the first normally-closed relay contact receives a split signal, the other end of the first normally-closed relay contact is connected with the first normally-open relay, the other end of the first current-limiting resistor is connected with the first light-emitting diode, the other end of the second current-limiting resistor is connected with the second light-emitting diode, the connection point of the first normally-open relay contact and the switching relay receives a switching signal, one end of the first normally-closed relay receives the split signal, and the other ends of the first normally-open relay, the first normally-open relay and the switching relay are grounded; The device also includes an analog spring tank circuit; The analog spring energy storage circuit comprises a first comparison circuit, a capacitor, a first resistor, a second resistor and a diode.
  2. 2. The analog circuit breaker device of claim 1, wherein the first comparison circuit comprises a first operational amplifier, a first voltage dividing resistor, a second voltage dividing resistor, a third resistor, a fourth resistor, and a first NPN transistor.
  3. 3. The analog circuit breaker apparatus of claim 2 further comprising a stored energy state change indicating circuit; The energy storage state change indicating circuit comprises a second comparison circuit, a magnetic latching relay, a second normally open relay, a third current limiting resistor and a third light emitting diode.
  4. 4. The analog circuit breaker apparatus of claim 3 wherein said second comparison circuit comprises a second operational amplifier, a third voltage dividing resistor, a fourth voltage dividing resistor, a fifth resistor, a sixth resistor, a second NPN transistor.
  5. 5. The analog circuit breaker device according to claim 4, wherein one end of the magnetic latching relay contact receives a closing signal, the other end of the magnetic latching relay contact is connected with the second resistor, the other end of the second resistor is connected with the diode, the other end of the diode is connected with the first operational amplifier in-phase input end, the second operational amplifier in-phase input end, the capacitor and the first resistor are grounded, the inverting input end of the first operational amplifier is connected with the first voltage dividing resistor and the second voltage dividing resistor, the other end of the first voltage dividing resistor is connected with VCC, the other end of the second voltage dividing resistor is grounded, the output end of the first operational amplifier is connected with the third resistor and the fourth resistor, the other end of the third resistor is connected with the base of the first NPN-type triode, the other end of the fourth resistor is grounded, the emitter of the first NPN-type triode is grounded, the collector of the first NPN-type triode is connected with the second normally open relay, the other end of the second normally open relay is connected with VCC, the second normally open relay contact is connected with the third current limiting resistor, the connecting point of the second normally open relay contact and the third current limiting resistor receives an unaddressed signal, the other end of the third current limiting resistor is connected with the third light emitting diode, and the other end of the third light emitting diode is grounded; The inverting input end of the second operational amplifier is connected with a third voltage dividing resistor and a fourth voltage dividing resistor, the other end of the third voltage dividing resistor is connected with VCC, the other end of the fourth voltage dividing resistor is grounded, the output end of the second operational amplifier is connected with a fifth resistor and a sixth resistor, the other end of the fifth resistor is connected with a base electrode of a second NPN triode, the other end of the sixth resistor is grounded, an emitter electrode of the second NPN triode is grounded, a collector electrode of the second NPN triode is connected with a reset coil of the second magnetic latching relay, the other end of the reset coil of the magnetic latching relay is connected with VCC, one end of an action coil of the magnetic latching relay is connected with a switching-off signal, and the other end of the action coil of the magnetic latching relay is grounded.
  6. 6. The analog circuit breaker apparatus of claim 1 further comprising an analog manual operating circuit; The analog manual operation loop comprises a first tact switch, a second tact switch, a fourth current-limiting resistor, a fourth light-emitting diode, a fifth current-limiting resistor and a fifth light-emitting diode.
  7. 7. The analog circuit breaker device according to claim 6, wherein the first tact switch and the second tact switch control the opening signal and the closing signal, respectively, one end of the fourth current limiting resistor receives the opening signal, the other end is connected to the fourth light emitting diode, and the other end of the fourth light emitting diode is grounded; one end of the fifth current limiting resistor receives the switching-on signal, the other end of the fifth current limiting resistor is connected with the fifth light emitting diode, and the other end of the fifth light emitting diode is grounded.
  8. 8. The analog circuit breaker apparatus of claim 1 further comprising a barometric pressure status indication circuit; the air pressure state indicating circuit comprises a toggle switch, a sixth current limiting resistor and a sixth light emitting diode.
  9. 9. The analog circuit breaker device of claim 8, wherein the toggle switch is connected to a sixth current limiting resistor, the other end of the sixth current limiting resistor is connected to a sixth light emitting diode, and the other end of the sixth light emitting diode is grounded.

Description

Analog circuit breaker device Technical Field The utility model relates to the technical field of power system test equipment, and discloses an analog circuit breaker device. Background In the process of equipment research and development, equipment operation and detection of a power system, accurate testing of a relay protection device, a transformer substation automation system and the like is a key link for ensuring safe and stable operation of the power system. Conventional testing methods often rely on real high voltage circuit breakers, however, real circuit breakers suffer from a number of inconveniences. Firstly, the real circuit breaker is large in size and heavy in weight, so that high requirements are put on a test site, and the test cost and time are greatly increased. Secondly, the frequent operation of the real circuit breaker can cause the abrasion of mechanical parts of the real circuit breaker to be aggravated, and the electrical performance of the real circuit breaker is gradually reduced, so that the service life of the real circuit breaker is shortened, and meanwhile, the frequent operation can also generate certain interference and influence on the normal operation of a power grid. In addition, in some special test requirement scenes, such as preliminary verification of a novel relay protection algorithm, demonstration experiments in electric power teaching training and the like, all complex functions and high cost investment of a real circuit breaker are not needed, and the traditional real circuit breaker is difficult to meet the flexible and changeable test requirements. Therefore, it is of great importance to develop a circuit breaker simulating device which can simulate the control loop and signal state of a real high-voltage circuit breaker, has small volume, light weight and low cost, and is convenient to use and maintain. Disclosure of utility model Aiming at the technical defects, the utility model aims to provide an analog circuit breaker device, which solves the problem of insufficient flexibility of the traditional testing method in the prior art. In order to solve the technical problems, the utility model adopts the following technical scheme: In a first aspect, the present utility model provides an analog circuit breaker apparatus, the apparatus comprising a closing control loop, a breaking control loop, a split status indicator light circuit, and a split status indicator light circuit; The switching-on control loop and the switching-off control loop comprise a first normally-open relay, a first normally-closed relay and a conversion relay; The split state indicator lamp circuit comprises a first current limiting resistor and a first light emitting diode; The on-position state indicator lamp circuit comprises a second current limiting resistor and a second light emitting diode; The switching relay static contact is respectively connected with the VCC and the first normally open relay contact, the switching relay normally closed contact is connected with the first current limiting resistor, the connection point receives a split signal, the switching relay normally open contact is connected with the second current limiting resistor and the first normally closed relay contact, the connection point receives a split signal, the other end of the first normally closed relay contact is connected with the first normally open relay, the other end of the first current limiting resistor is connected with the first light emitting diode, the other end of the second current limiting resistor is connected with the second light emitting diode, the other end of the first normally open relay contact is connected with the switching relay, the connection point receives a switching-on signal, the one end of the first normally closed relay receives a split signal, and the other ends of the first light emitting diode, the second light emitting diode, the first normally open relay, the first normally closed relay and the switching relay are grounded. Preferably, in a possible implementation manner of the first aspect, the apparatus further comprises an analog spring tank circuit; The analog spring energy storage circuit comprises a first comparison circuit, a capacitor, a first resistor, a second resistor and a diode. In a possible implementation manner of the first aspect, the first comparing circuit includes a first operational amplifier, a first voltage dividing resistor, a second voltage dividing resistor, a third resistor, a fourth resistor, and a first NPN transistor. Preferably, in a possible implementation manner of the first aspect, the apparatus further comprises a stored energy state change indicating circuit; The energy storage state change indicating circuit comprises a second comparison circuit, a magnetic latching relay, a second normally open relay, a third current limiting resistor and a third light emitting diode. Preferably, in a possible implementation manner of the first aspec