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CN-122000609-A - Device and method for discriminating bus short-circuit fault of substation power utilization system

CN122000609ACN 122000609 ACN122000609 ACN 122000609ACN-122000609-A

Abstract

The invention discloses a device and a method for distinguishing short circuit faults of a bus of a substation power utilization system, which relate to the technical field of circuit fault diagnosis and comprise an interface protection device, a sensor, a battery pack and a battery cover plate, wherein a plurality of fixing buckles are fixedly arranged on the battery cover plate, the battery cover plate is characterized in that a sealing ring is fixedly arranged at the bottom of the battery cover plate, a round hole and a plurality of through holes are formed in the battery cover plate, a pressure relief pipe is fixedly arranged on the round hole, a plurality of air release pipes are fixedly arranged on the through holes, and a pressure relief mechanism is arranged in the pressure relief pipe. The automatic pressure relief device has the advantages that automatic pressure relief, automatic pressure control and automatic volatile gas purification can be performed, when the battery is in internal combustion, air in the battery can be evacuated, oxygen supply is blocked, the probability of explosion of the battery is reduced, the safety, the environment friendliness and the use universality are high, and the use safety coefficient is higher.

Inventors

  • LIU RUIBO
  • WANG ANZHEN
  • JI ZHAOLIANG
  • WU DAN

Assignees

  • 山东盛博莱电力工程有限公司

Dates

Publication Date
20260508
Application Date
20251222

Claims (10)

  1. 1. The utility model provides a transformer substation uses electric system busbar short circuit fault discriminating device, includes interface protection device, sensor, group battery and battery apron (1), its characterized in that, fixedly mounted with a plurality of fixed knot (2) on battery apron (1), battery apron (1) bottom fixed mounting has sealing washer (4), set up a round hole and a plurality of through-hole on battery apron (1), fixedly mounted with pressure release pipe (13) on the round hole, a plurality of all fixed mounting has a bleeder (6) on the through-hole, install pressure release mechanism in pressure release pipe (13); An air release mechanism is arranged in each air release pipe (6), and the battery cover plate (1) is provided with an air purification mechanism matched with a plurality of air release pipes (6); the double-shaft motor (24) is fixedly mounted on the upper portion of the battery cover plate (1), the protective cover (3) matched with the pressure relief pipe (13), the air release pipe (6) and the double-shaft motor (24) is fixedly mounted on the battery cover plate (1), two storage grooves are formed in the protective cover (3), two cushion blocks are fixedly mounted in the storage grooves, and a pull handle (5) is mounted between the two cushion blocks in a co-rotating mode.
  2. 2. The device for judging the short circuit fault of the bus of the power utilization system of the transformer substation according to claim 1, wherein the pressure relief mechanism comprises a fixed circular ring (14), a sliding circular ring (15), a fixed support plate I (16), a reset spring I (17), a plugging plate I (18), a fixed support plate II (19), a reset spring II (20) and a plugging plate II (21); The pressure relief pipe (13) is fixedly provided with a fixed circular ring (14), the fixed circular ring (14) is fixedly provided with a fixed support plate II (19), the fixed support plate II (19) is fixedly provided with a plurality of return springs II (20), and the return springs II (20) are fixedly provided with a plugging plate II (21) matched with the fixed circular ring (14); The pressure relief pipe (13) is provided with a sliding circular ring (15) in a sliding mode, a first fixed support plate (16) is fixedly arranged on the sliding circular ring (15), a plurality of first reset springs (17) are fixedly arranged on the first fixed support plate (16), a plurality of first plugging plates (18) matched with the sliding circular ring (15) are fixedly arranged on the first reset springs (17) together, and a pushing structure is arranged between the double-shaft motor (24) and the sliding circular ring (15).
  3. 3. The device for judging the bus short-circuit fault of the power utilization system of the transformer substation according to claim 2, wherein the pushing structure comprises a reciprocating screw rod II (37), a bevel gear I (38), a ball nut II (39), a friction rod (40) and a bevel gear II; A bevel gear II is fixedly arranged at the first driving end of the double-shaft motor (24), a reciprocating screw rod II (37) is rotatably arranged on the battery cover plate (1), and a bevel gear I (38) meshed with the bevel gear II is fixedly arranged on the reciprocating screw rod II (37); The ball nut II (39) is matched and installed on the reciprocating screw rod II (37), the friction rod (40) is fixedly installed on the ball nut II (39), the friction rod (40) is fixedly connected with the sliding circular ring (15), and a weight loss component is installed between the friction rod (40) and the battery cover plate (1).
  4. 4. A device for discriminating a bus short-circuit fault of a power system for a transformer substation according to claim 3, wherein the weight loss component comprises a supporting rod (41) and a friction sleeve (42), the supporting rod (41) is fixedly installed on the battery cover plate (1), and the friction sleeve (42) matched with the friction rod (40) is fixedly installed on the supporting rod (41).
  5. 5. The device for judging the short circuit fault of the bus of the electrical system of the transformer substation according to claim 1, wherein the air leakage mechanism comprises a limit sleeve (29), a limit rod (30), an adjusting disc (31), a sealing disc (32), a pressing spring (33), a blocking ring (34) and a supporting plate (35); The utility model discloses a gas leakage pipe, including gas leakage pipe (6), fixed mounting has backup pad (35) and shutoff ring (34) on gas leakage pipe (6), fixed mounting has two stop collar (29) on backup pad (35), two equal slidable mounting has a gag lever post (30) on stop collar (29), two common fixed mounting has an adjustment disk (31) on gag lever post (30), fixed mounting has a plurality of pressure springs (33) on adjustment disk (31), a plurality of on pressure springs (33) common fixed mounting have one with shutoff ring (34) matched with sealing disk (32), install adjusting structure between gas leakage pipe (6) and adjustment disk (31).
  6. 6. The device for judging the short circuit fault of the bus of the power utilization system of the transformer substation according to claim 5, wherein the adjusting structure comprises a screw rod, a nut (22), a fixed disc (28) and a fixed sleeve (36), the fixed sleeve (36) is fixedly arranged on the supporting plate (35), the nut (22) is fixedly arranged on the fixed sleeve (36), the screw rod is rotatably arranged on the nut (22) in a threaded manner, the fixed disc (28) is rotatably arranged on the screw rod, the fixed disc (28) is in sliding connection with the air leakage pipe (6), and the lower end of the screw rod is propped against the adjusting disc (31); A driving structure is arranged between the second driving end of the double-shaft motor (24) and one of the screw rods, and a linkage structure is arranged among a plurality of screw rods.
  7. 7. The device for judging the bus short-circuit fault of the power utilization system of the transformer substation according to claim 6, wherein the driving structure comprises a gear (12), a first reciprocating screw (25), a first ball nut (26), a push rod (27) and a rack (23); The double-shaft motor is characterized in that a first reciprocating screw rod (25) is fixedly arranged at a second driving end of the double-shaft motor (24), a first ball nut (26) is cooperatively arranged on the first reciprocating screw rod (25), a push rod (27) is fixedly arranged on the first ball nut (26), a rack (23) is fixedly arranged on the push rod (27), and a gear (12) meshed with the rack (23) is fixedly arranged on one of the screw rods.
  8. 8. The device for judging the bus short-circuit fault of the power utilization system of the transformer substation according to claim 6, wherein the linkage structure comprises rotating rollers (11) and tracks (10), each rotating roller (11) is fixedly installed on each screw, and one track (10) is sleeved between the rotating rollers (11).
  9. 9. The device for judging the short circuit fault of the bus of the power utilization system of the transformer substation according to claim 1, wherein the purifying mechanism comprises an air outlet pipe (8), a purifier (7) and an exhaust pipe (9), the purifier (7) is fixedly installed on the battery cover plate (1), each air outlet pipe (6) is communicated with the purifier (7) through the air outlet pipe (8), and a plurality of exhaust pipes (9) are fixedly communicated with the purifier (7).
  10. 10. A method for discriminating a short-circuit fault of a bus of a substation electrical system, which is used for a discriminating device of a short-circuit fault of a bus of a substation electrical system according to any one of claims 1 to 9, and is characterized by comprising the following steps: S1, a comprehensive automation system of a transformer substation acquires electrical quantities such as bus current, bus voltage and the like, non-electrical quantities such as temperature, arc light and the like and environment temperature and humidity in real time through an interface protection device and a sensor, and ensures that fault related data are captured; S2, cleaning data to remove errors, and correlating electrical and non-electrical quantities to see whether the data accords with fault characteristics, comparing waveforms and calculation probabilities in a complex scene by using an AI model, and distinguishing normal, fault and interference signals; S3, once the bus is short-circuited, the temperature is rapidly increased, so that the internal temperature of the comprehensive automatic system of the transformer substation is increased, a battery pack in the comprehensive automatic system of the transformer substation needs to be protected, and the pressure in the battery is increased and the gas in the battery volatilizes and expands due to the increase of the temperature of the battery pack; And S4, pressure relief, namely increasing the pressure in the battery, releasing the pressure in the battery by using a pressure relief mechanism, and extracting air, wherein the chemical reaction in the battery is accelerated along with the increase of the temperature of the battery, the gas generation speed is higher than the gas consumption speed, the gas in the battery is required to be discharged by using a gas release mechanism, and harmful substances in the gas are removed by using a gas purification mechanism.

Description

Device and method for discriminating bus short-circuit fault of substation power utilization system Technical Field The invention relates to the technical field of circuit fault diagnosis, in particular to a device and a method for judging a short circuit fault of a bus of a power utilization system of a transformer substation. Background With the continuous increase of the social electricity demand and the deep promotion of smart grid construction, the structure of a substation electricity system is increasingly complex, the borne power load is continuously increased, a bus is used as a key component for connecting all levels of distribution equipment in the substation and realizing electric energy collection and distribution, the operation state is more important, once the bus has a short circuit fault, the voltage dip and the current surge of a local power grid can be instantaneously caused, the overload damage of core power equipment such as a transformer, a circuit breaker and the like is caused, the fault range is more likely to be rapidly expanded, and therefore, the short circuit fault judgment on the bus is needed. The existing discrimination adopts a transformer substation integrated automation system, bus short circuit faults can cause bus conductor resistance to generate a large amount of Joule heat due to current surge, so that bus temperature is rapidly increased, at the moment, the temperature of an electric element in the transformer substation integrated automation system can be rapidly increased, and particularly, the temperature of a battery used for supplying power in the transformer substation integrated automation system can influence the normal power supply efficiency of the battery. When a severe chemical reaction occurs in the battery, the pressure in the battery is increased severely at the moment, so that the pressure in the battery cannot be released in time, the battery is burst, and a large potential safety hazard exists; the battery is in the high temperature state, and the inside can volatilize gas (lead acid battery) of battery contains sulfuric acid, can damage human respiratory system's cell, and is harmful to the health, and this apron can't carry out effective processing to volatilized gas, and volatilized gas can cause the increase of battery internal pressure simultaneously, seriously can cause the battery swell. Therefore, the novel device and the method for distinguishing the short circuit faults of the bus of the power utilization system of the transformer substation can be adopted to solve the defects in the prior art. Disclosure of Invention The invention aims to solve the problems that automatic pressure relief is impossible and volatile gas leakage exists in the prior art, and provides a device and a method for judging a bus short circuit fault of a power utilization system of a transformer substation. In order to achieve the above purpose, the present invention adopts the following technical scheme: The utility model provides a transformer substation power consumption system busbar short circuit fault distinguishing device and identification method thereof, includes interface protection device, sensor, group battery and battery cover plate, fixedly mounted with a plurality of fixed knot on the battery cover plate, fixedly mounted with the sealing washer in the bottom of the battery cover plate, set up a round hole and a plurality of through-holes on the battery cover plate, fixedly mounted with the pressure release pipe on the round hole, a plurality of all fixedly mounted with a bleeder on the through-hole, install pressure release mechanism in the pressure release pipe; an air release mechanism is arranged in each air release pipe, and the battery cover plate is provided with an air purification mechanism matched with a plurality of air release pipes; The double-shaft motor is fixedly arranged on the upper portion of the battery cover plate, the protective cover matched with the pressure relief pipe, the air release pipe and the double-shaft motor is fixedly arranged on the battery cover plate, two storage grooves are formed in the protective cover, two cushion blocks are fixedly arranged in the storage grooves, and a pull handle is jointly rotatably arranged between the two cushion blocks. In the device for judging the short circuit fault of the bus of the power utilization system of the transformer substation and the identification method thereof, the pressure relief mechanism comprises a fixed circular ring, a sliding circular ring, a fixed support plate I, a reset spring I, a blocking plate I, a fixed support plate II, a reset spring II and a blocking plate II; the pressure relief pipe is fixedly provided with a fixed ring, the fixed ring is fixedly provided with a fixed support plate II, the fixed support plate II is fixedly provided with a plurality of reset springs II, and the reset springs II are fixedly provided with a plugging plate II matched with