CN106405409B - Intelligent test system and test method for insulation resistance and leakage current of high-voltage circuit breaker - Google Patents
Intelligent test system and test method for insulation resistance and leakage current of high-voltage circuit breaker Download PDFInfo
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- CN106405409B CN106405409B CN201611038736.3A CN201611038736A CN106405409B CN 106405409 B CN106405409 B CN 106405409B CN 201611038736 A CN201611038736 A CN 201611038736A CN 106405409 B CN106405409 B CN 106405409B
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- 238000012360 testing method Methods 0.000 title claims abstract description 78
- 238000009413 insulation Methods 0.000 title claims abstract description 40
- 238000010998 test method Methods 0.000 title description 2
- 239000003990 capacitor Substances 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
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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
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Abstract
The intelligent test system and method for the insulation resistance and leakage current of the high-voltage circuit breaker are characterized in that: the system comprises a power supply (1), a self-coupling voltage regulator (3), a test transformer (4), a first protection resistor (5), a high-voltage rectifying silicon stack (6), a first filter capacitor (7), a voltage dividing resistor (8), a pressure measuring resistor (9), a voltage transformer (10), a high-voltage circuit breaker (11), a battery (12), a second filter capacitor (13), a second protection resistor (14), a current transformer (15), a signal processing circuit (16), a DSP (17), a signal amplifying circuit (18), a display screen (19), an indicator lamp (20), a buzzer (21), an operation panel (22), a printer module (23), a grounding terminal (24), a step-up transformer (25), a control switch (26), a switch driver (27), a signal processing circuit (28) and a signal conversion circuit (29), and the system has the advantages of being simple in structure, convenient to operate, short in response time, high in test precision and the like, and provides a data base for evaluating the insulation state and fault diagnosis of the high-voltage circuit breaker.
Description
Technical Field
The invention belongs to the technical field of insulation characteristic test, and particularly relates to an intelligent test system for insulation resistance and leakage current of a high-voltage circuit breaker.
Background
Insulation testing refers to testing the insulation characteristics of a high voltage circuit breaker by using special instruments and methods, wherein insulation resistance and leakage current testing are important items for testing the insulation characteristics of the high voltage circuit breaker. The insulation state of the high-voltage circuit breaker can be reflected by testing insulation resistance and leakage current, faults such as insulation integral and inertia wetting, insulation breakdown and overheat aging, insulation pull rod and insulation oil wetting, explosion chamber wetting and degradation, porcelain bushing cracking and appearance dirt and the like can be effectively found, the change trend of the insulation characteristic along with time is comprehensively analyzed through data accumulated through past tests, and the judgment level of the insulation state of the high-voltage circuit breaker is further improved. At present, equipment such as a megameter, an ammeter and the like is adopted for insulation resistance and leakage electricity test of the high-voltage circuit breaker, data are manually read and recorded, the testing process is complex, the reliability is poor, and the intelligent level is low.
Disclosure of Invention
The invention aims to: the invention provides an intelligent testing system and an intelligent testing method for insulation resistance and leakage current of a high-voltage circuit breaker, and aims to solve the problems existing in the past.
The technical scheme is as follows: the invention is realized by the following technical scheme:
the system comprises a power supply, a low-voltage contactor, a self-coupling voltage regulator, a test transformer, a first protection resistor, a high-voltage rectifying silicon stack, a first filter capacitor, a voltage dividing resistor, a pressure measuring resistor, a voltage transformer, a high-voltage circuit breaker, a battery, a second filter capacitor, a second protection resistor, a current transformer, a signal processing circuit, a DSP, a signal amplifying circuit, a display screen, an indicator lamp, a buzzer, an operation panel, a printer module, a grounding terminal, a step-up transformer, a control switch, a switch driver, a signal processing circuit and a signal conversion circuit, wherein the positive end and the negative end of the power supply are connected with the power supply input side of the self-coupling voltage regulator through the low-voltage contactor, the output end of the self-coupling voltage regulator is connected with the primary side of the test transformer, one end of the secondary side of the test transformer is connected with the primary side of the first protection resistor, the other end of the secondary side of the test transformer is connected with the grounding terminal, the other secondary side of the first protection resistor is connected with one end of the high-voltage rectifying silicon stack, the other end of the high-voltage rectifying silicon stack is respectively connected with one end of the voltage dividing resistor, the other end of the voltage transformer is connected with the voltage-dividing resistor and the voltage-circuit breaker through the voltage-converting terminal of the first voltage-dividing resistor, the other end of the voltage-transformer is connected with the signal-converting terminal of the voltage-converting circuit, the other end of the voltage-transformer is connected with the voltage-converting circuit of the voltage-transforming terminal of the test transformer through the voltage-transformer, the other end of the voltage-circuit is connected with the voltage-converting terminal of the voltage-stage, the output end of the step-up transformer is respectively connected with one end of the second filter capacitor and one end of the control switch, the other end of the control switch is connected with one side of the test port of the high-voltage circuit breaker through the second protection resistor, the other end of the second filter capacitor is connected with the grounding terminal, the signal output end of the current transformer is connected with the analog signal input end of the DSP through the signal processing circuit, the digital signal output end of the DSP is connected with the control port of the low-voltage contact device after passing through the signal amplifying circuit, the signal input unit of the display screen and the indicating lamp is connected with the signal output unit of the DSP, the digital signal output port of the DSP is connected with the signal input port of the buzzer after passing through the signal converting circuit, the output end of the operation panel is connected with the digital signal output port of the DSP, the signal input end of the printer module is connected with the data communication end of the DSP, and the digital signal output port of the DSP is connected with the control end of the control switch after passing through the switch driver.
The display screen is temporarily fixed through a transverse temporary fixing frame, and the fixing frame comprises a supporting box, an upper V-shaped supporting clamp, a lower V-shaped supporting clamp and an adjusting screw; limiting slide ways are arranged at two ends of the supporting box and are strip-shaped slide ways arranged along the length direction of the supporting box;
the upper V-shaped supporting clamp comprises an upper clamping arm and an upper follower arm, and the upper clamping arm is connected with the upper follower arm through a torsion spring to form a V-shaped structure; the lower V-shaped supporting clamp comprises a lower clamping arm and a lower follower arm, and the lower clamping arm is connected with the lower follower arm through another torsion spring to form a V-shaped structure; the two torsion springs are sleeved on the movable roller, a rolling shaft is arranged in the center of the movable roller, and two ends of the rolling shaft extend into the limit slideway and move along the limit slideway when in use;
the upper follower arm is movably connected with the lower follower arm through a movable shaft, the movable shaft is connected with a pulling rod with threads, and the pulling rod penetrates through the supporting box along the direction perpendicular to the limiting slideway and is in threaded fit with the supporting box through threads;
a transverse fixing pressing sheet for pressing the lower edge of the display screen in the horizontal direction is arranged at the front part of the upper clamping arm;
a plurality of limit grooves for transverse rod insertion of the transverse fixing pressing sheet are sequentially formed in the upper clamping arm along the length direction of the upper clamping arm.
The intelligent testing method for the insulation resistance and the leakage current of the high-voltage circuit breaker, which is implemented by the intelligent testing system for the insulation resistance and the leakage current of the high-voltage circuit breaker, is characterized by comprising the following steps of: the method utilizes the high-speed data processing and computing capacity of the DSP to realize the accurate test of the insulation resistance and leakage current of the high-voltage circuit breaker, meanwhile, the DSP can judge the insulation state of equipment by calling internal data, and the equipment can carry out grading early warning when in fault, and the indicator lamp is normally on and green when the high-voltage circuit breaker operates normally, and the buzzer does not alarm; when the high-voltage circuit breaker is in a sub-health state, the indicator light turns red and flashes, and the buzzer does not alarm; when the high-voltage circuit breaker fails, the indicator light turns red and flashes, the buzzer alarms, and the display screen and the printer module respectively realize the display and printing functions of the test result, and the specific process is as follows:
(1) Powering up the system, performing self-checking by the DSP, and waiting for a control instruction of the operation panel;
(2) Setting test parameters and test types, sending control instructions, and sending driving instructions to a signal amplifying circuit or a switch driver by a DSP;
(3) The voltage is regulated, limited and filtered and then is applied to the high-voltage circuit breaker;
(4) The DSP acquires system voltage and current information, tests and times, and utilizes an internal software program to operate so as to obtain an insulation resistance or leakage current value;
(5) Judging whether the test result is reasonable or not according to the test part and the voltage grade of the high-voltage circuit breaker, and performing grading early warning when the high-voltage circuit breaker fails;
(6) The DSP sends signals to the display screen and the printer module to display and print the test result;
(7) And after the test is finished, the high-voltage circuit breaker is restored, and test instrument equipment is arranged.
The advantages and effects are that: the invention provides an intelligent testing system and an intelligent testing method for insulation resistance and leakage current of a high-voltage circuit breaker, which aim to solve the problems existing in the past.
Drawings
FIG. 1 is a block diagram of an intelligent test system for insulation resistance and leakage current of a high voltage circuit breaker;
FIG. 2 is a schematic diagram of a mechanism of the fixing frame;
fig. 3 is an enlarged view of the portion a in fig. 2.
1. A power supply; 2. a low voltage contactor; 3. a self-coupling voltage regulator; 4. a test transformer; 5. a first protection resistor; 6. a high voltage rectifying silicon stack; 7. a first filter capacitor; 8. a voltage dividing resistor; 9. a piezoresistor; 10. a voltage transformer; 11. a high voltage circuit breaker; 12. a battery; 13. a second filter capacitor; 14. a second protection resistor; 15. a current transformer; 16. a signal processing circuit; 17. a DSP; 18. a signal amplifying circuit; 19. a display screen; 20. an indicator light; 21. a buzzer; 22. an operation panel; 23. a printer module; 24. a ground terminal; 25. a step-up transformer; 26. a control switch; 26. a switch driver; 27. a signal conversion circuit; 28. a signal processing circuit.
Detailed Description
As shown in fig. 1, the present invention provides a high voltage circuit breaker insulation resistance and leakage current intelligent test system, the system comprises a power supply 1, a low voltage contact 2, a self-coupling voltage regulator 3, a test transformer 4, a first protection resistor 5, a high voltage rectifying silicon stack 6, a first filter capacitor 7, a voltage dividing resistor 8, a pressure measuring resistor 9, a voltage transformer 10, a high voltage circuit breaker 11, a battery 12, a second filter capacitor 13, a second protection resistor 14, a current transformer 15, a signal processing circuit 16, a DSP17, a signal amplifying circuit 18, a display screen 19, an indicator lamp 20, a buzzer 21, an operation panel 22, a printer module 23, a grounding terminal 24, a step-up transformer 25, a control switch 26, a switch driver 27, a signal processing circuit 28 and a signal conversion circuit 29, wherein the positive and negative ends of the power supply 1 are connected with the power supply input side of the self-coupling voltage regulator 3 through the low voltage contact 2, the output end of the autotransformer 3 is connected with the primary side of the test transformer 4, one end of the secondary side of the test transformer 4 is connected with the primary side of the first protection resistor 5, the other end of the secondary side of the test transformer 4 is connected with the grounding terminal 24, the other secondary side of the first protection resistor 5 is connected with one end of the high-voltage rectifying silicon stack 6, the other end of the high-voltage rectifying silicon stack 6 is respectively connected with one end of the voltage dividing resistor 8, one end of the first filter capacitor 7 and one side of the test port of the high-voltage circuit breaker 11, the other side of the test port of the high-voltage circuit breaker 11 is connected with the grounding terminal 24 after passing through the current transformer 15, the other end of the first filter capacitor 7 is connected with the grounding terminal 24, the other end of the voltage dividing resistor 8 is connected with one end of the pressure measuring resistor 9, the other end of the pressure measuring resistor 9 is connected with the grounding terminal 24, the both ends of voltage transformer 10 are connected with the both ends of piezoresistor 9, the signal output part of voltage transformer 10 is connected with the signal input part of DSP17 through signal processing circuit 28, the output part of battery 12 is connected with the input part of step-up transformer 25, the output part of step-up transformer 25 is connected with one end of second filter capacitor 13 and one end of control switch 26 respectively, the other end of control switch 25 is connected with one side of the test port of high-voltage circuit breaker 11 through second protection resistor 14, the other end of second filter capacitor 13 is connected with ground terminal 24, the signal output part of current transformer 15 is connected with the analog signal input part of DSP17 through signal processing circuit 16, the digital signal output part of DSP17 is connected with the control port of DSP17 after passing through signal amplifying circuit 18, the signal input part of display 19, pilot lamp 20 is connected with the signal output part of DSP17, the digital signal output part of DSP17 is connected with the signal input part of buzzer 21 after passing through signal converting circuit 29, the output part of operation panel 22 is connected with the digital signal output part of DSP17, the signal output part of printer module 23 is connected with the control switch 17 through the data input part of DSP17 after passing through signal converting circuit 29, the digital signal output part of control switch 27 is connected with the digital signal output part of DSP 17.
The display screen 19 is temporarily fixed by a transverse temporary fixing frame, and the fixing frame comprises a supporting box 111, an upper V-shaped supporting clamp, a lower V-shaped supporting clamp and an adjusting screw 888; the two ends of the supporting box 111 are provided with limiting slide ways 666, and the limiting slide ways 666 are strip-shaped slide ways arranged along the length direction of the supporting box 111;
the upper V-shaped supporting clamp comprises an upper clamping arm 333 and an upper follower arm 333-1, and the upper clamping arm 333 and the upper follower arm 333-1 are connected through a torsion spring to form a V-shaped structure; the lower V-shaped supporting clamp comprises a lower clamping arm 222 and a lower follower arm 222-1, and the lower clamping arm 222 and the lower follower arm 222-1 are connected through another torsion spring 444 to form a V-shaped structure; the two torsion springs are sleeved on the movable roller, a rolling shaft 555 is arranged in the center of the movable roller, and two ends of the rolling shaft 555 extend into the limit slide 666 and move along the limit slide 666 when in use;
the upper follower arm 333-1 is movably connected with the lower follower arm 222-1 through a movable shaft 777, the movable shaft 777 is connected with a pulling rod 888 with threads 999, and the pulling rod 888 passes through the support box 111 along the direction perpendicular to the limit slideway 666 and is in threaded fit with the support box 111 through the threads 999;
a lateral fixing presser 000 for pressing the lower edge of the display screen in the horizontal direction is provided at the front of the upper clamp arm 333.
A plurality of limit grooves 001 for the cross bar of the transverse fixing press piece 000 to be inserted are sequentially arranged on the upper clamping arm 333 along the length direction of the upper clamping arm.
When the fixing frame is used, the pulling rod 888 is screwed inwards (i.e. in the upper right direction in the figure), so that the upper clamping arm 333 and the lower clamping arm 222 are outwards opened, then the upper clamping arm 333 and the lower clamping arm 222 are respectively arranged on the side surface and the lower surface of the clamped position, a display is arranged on the inner side of the vertical fixing pressing piece 000, then the pulling rod 888 is screwed reversely, so that the upper clamping arm 333 and the lower clamping arm 222 are inwards folded and gradually clamp the display screen, the display screen is tightly contacted with the clamped position to finish the operation, and the action of screwing the pulling rod 888 is repeated when the display screen is dismounted or replaced. The fixing frame can be used for fixing the display screen at various positions, so that the display screen is suitable for different use environments.
The plurality of limit grooves 001 are arranged, so that the positions of the transverse fixing press pieces 000 can be adjusted, the transverse fixing press pieces have better adaptability, and the position can be adjusted according to different conditions.
The system utilizes the high-speed data processing and operation capability of the DSP to accurately test the insulation resistance and leakage current of the high-voltage circuit breaker, meanwhile, the DSP can judge the insulation state of equipment by calling internal data, and performs grading early warning when the equipment is in fault (when the high-voltage circuit breaker operates normally, an indicator light is normally bright green, a buzzer does not alarm, when the high-voltage circuit breaker is in a sub-health state, the indicator light turns red and flashes, the buzzer does not alarm, when the high-voltage circuit breaker is in fault, the indicator light turns red and flashes, the buzzer alarms), and a display screen and a printer module respectively realize the display and printing functions of test results. Intelligent test process description of insulation resistance and leakage current of high-voltage circuit breaker:
(1) Powering up the system, performing self-checking by the DSP, and waiting for a control instruction of the operation panel;
(2) Setting test parameters and test types, sending control instructions, and sending driving instructions to a signal amplifying circuit or a switch driver by a DSP;
(3) The voltage is regulated, limited and filtered and then is applied to the high-voltage circuit breaker;
(4) The DSP acquires system voltage and current information, tests and times, and utilizes an internal software program to operate so as to obtain an insulation resistance or leakage current value;
(5) Judging whether the test result is reasonable or not according to the test part and the voltage grade of the high-voltage circuit breaker, and performing grading early warning when the high-voltage circuit breaker fails;
(6) The DSP sends signals to the display screen and the printer module to display and print the test result;
(7) And after the test is finished, the high-voltage circuit breaker is restored, and test instrument equipment is arranged.
Claims (4)
1. High voltage circuit breaker insulation resistance and leakage current intelligent test system, its characterized in that: the system comprises a power supply (1), a low-voltage transformer (2), a self-coupling voltage regulator (3), a test transformer (4), a first protection resistor (5), a high-voltage rectifying silicon stack (6), a first filter capacitor (7), a voltage dividing resistor (8), a pressure measuring resistor (9), a voltage transformer (10), a high-voltage circuit breaker (11), a battery (12), a second filter capacitor (13), a second protection resistor (14), a current transformer (15), a signal processing circuit (16), a DSP (17), a signal amplifying circuit (18), a display screen (19), an indicator lamp (20), a buzzer (21), an operation panel (22), a printer module (23), a grounding terminal (24), a step-up transformer (25), a control switch (26), a switch driver (27), a signal processing circuit (28) and a signal conversion circuit (29), wherein the positive end and the negative end of the power supply (1) are connected with the power supply input side of the self-coupling voltage regulator (3) through the low-voltage contactor (2), the output end of the self-coupling voltage regulator (3) is connected with the primary side of the test transformer (4), the secondary side of the secondary transformer (4) is connected with the primary protection resistor (5), the other end of the secondary side of the test transformer (4) is connected with a grounding terminal (24), the other side of the first protection resistor (5) is connected with one end of the high-voltage rectification silicon stack (6), the other end of the high-voltage rectification silicon stack (6) is respectively connected with one end of the voltage dividing resistor (8), one end of the first filter capacitor (7) and one side of a test port of the high-voltage circuit breaker (11), the other side of the test port of the high-voltage circuit breaker (11) is connected with the grounding terminal (24) after passing through the current transformer (15), the other end of the first filter capacitor (7) is connected with the grounding terminal (24), the other end of the voltage dividing resistor (8) is connected with one end of the voltage measuring resistor (9), the other end of the voltage dividing resistor (9) is connected with the grounding terminal (24), the two ends of the voltage transformer (10) are connected with the two ends of the voltage measuring resistor (9), the signal output end of the voltage transformer (10) is connected with the signal input end of the DSP (17) through the signal processing circuit (28), the output end of the battery (12) is connected with the signal input end of the boosting circuit (25) of the DSP (17) through the signal processing circuit (25), the output end of the voltage transformer (25) is connected with the second end of the voltage transformer (25) and the control end of the voltage transformer (13) is connected with the one side of the high-voltage transformer (13) through the second end of the voltage transformer (14) respectively, the other end of the second filter capacitor (13) is connected with a grounding terminal (24), the signal output end of the current transformer (15) is connected with the analog signal input end of the DSP (17) through a signal processing circuit (16), the digital signal output end of the DSP (17) is connected with the control port of the low-voltage contact device (2) after passing through a signal amplifying circuit (18), the signal input unit of the display screen (19) and the indicator lamp (20) is connected with the signal output unit of the DSP (17), the digital signal output end of the DSP (17) is connected with the signal input end of the buzzer (21) after passing through a signal conversion circuit (29), the output end of the operation panel (22) is connected with the digital signal output end of the DSP (17), the signal input end of the printer module (23) is connected with the data communication end of the DSP (17), and the digital signal output end of the DSP (17) is connected with the control end of the control switch (26) after passing through a switch driver (27);
the plurality of limit grooves (001) are arranged to adjust the position of the transverse fixing pressing piece 000.
2. The intelligent testing system for insulation resistance and leakage current of high-voltage circuit breaker according to claim 1, wherein: the display screen (19) is temporarily fixed through a transverse temporary fixing frame, and the fixing frame comprises a supporting box (111), an upper V-shaped supporting card, a lower V-shaped supporting card and a pulling rod (888); limiting slide ways (666) are arranged at two ends of the supporting box (111), and the limiting slide ways (666) are strip-shaped slide ways arranged along the length direction of the supporting box (111);
the upper V-shaped supporting clamp comprises an upper clamping arm (333) and an upper follower arm (333-1), and the upper clamping arm (333) and the upper follower arm (333-1) are connected through a torsion spring to form a V-shaped structure; the lower V-shaped supporting clamp comprises a lower clamping arm (222) and a lower follower arm (222-1), and the lower clamping arm (222) and the lower follower arm (222-1) are connected through another torsion spring (444) to form a V-shaped structure; the two torsion springs are sleeved on the movable roller, a rolling shaft (555) is arranged in the center of the movable roller, and two ends of the rolling shaft (555) extend into the limit slide way (666) and move along the limit slide way (666) when in use;
the upper follower arm (333-1) is movably connected with the lower follower arm (222-1) through a movable shaft (777), the movable shaft (777) is connected with a pulling rod (888) with threads (999), and the pulling rod (888) penetrates through the supporting box (111) along the direction perpendicular to the limiting slide way (666) and is in threaded fit with the supporting box (111) through the threads (999);
a transverse fixing pressing piece (000) for pressing the lower edge of the display screen in the horizontal direction is arranged at the front part of the upper clamping arm (333).
3. The intelligent testing system for insulation resistance and leakage current of high-voltage circuit breaker according to claim 2, wherein: a plurality of limit grooves (001) for the transverse rod of the transverse fixing pressing piece (000) to be inserted are sequentially arranged on the upper clamping arm (333) along the length direction of the upper clamping arm.
4. The intelligent testing method for the insulation resistance and the leakage current of the high-voltage circuit breaker, which is implemented by using the intelligent testing system for the insulation resistance and the leakage current of the high-voltage circuit breaker, is characterized by comprising the following steps of: according to the method, the high-speed data processing and computing capacity of the DSP is utilized to accurately test the insulation resistance and leakage current of the high-voltage circuit breaker, meanwhile, the DSP can judge the insulation state of equipment by calling internal data, grading early warning is carried out when the equipment fails, when the high-voltage circuit breaker operates normally, the indicator lamp is normally on green, and the buzzer does not alarm; when the high-voltage circuit breaker is in a sub-health state, the indicator light turns red and flashes, and the buzzer does not alarm; when the high-voltage circuit breaker fails, the indicator light turns red and flashes, the buzzer alarms, and the display screen and the printer module respectively realize the display and printing functions of the test result, and the specific process is as follows:
(1) Powering up the system, performing self-checking by the DSP, and waiting for a control instruction of the operation panel;
(2) Setting test parameters and test types, sending control instructions, and sending driving instructions to a signal amplifying circuit or a switch driver by a DSP;
(3) The voltage is regulated, limited and filtered and then is applied to the high-voltage circuit breaker;
(4) The DSP acquires system voltage and current information, tests and times, and utilizes an internal software program to operate so as to obtain an insulation resistance or leakage current value;
(5) Judging whether the test result is reasonable or not according to the test part and the voltage grade of the high-voltage circuit breaker, and performing grading early warning when the high-voltage circuit breaker fails;
(6) The DSP sends signals to the display screen and the printer module to display and print the test result;
(7) And after the test is finished, the high-voltage circuit breaker is restored, and test instrument equipment is arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611038736.3A CN106405409B (en) | 2016-11-23 | 2016-11-23 | Intelligent test system and test method for insulation resistance and leakage current of high-voltage circuit breaker |
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| CN201611038736.3A CN106405409B (en) | 2016-11-23 | 2016-11-23 | Intelligent test system and test method for insulation resistance and leakage current of high-voltage circuit breaker |
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| CN106405409A CN106405409A (en) | 2017-02-15 |
| CN106405409B true CN106405409B (en) | 2023-11-24 |
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| CN107462833A (en) * | 2017-08-22 | 2017-12-12 | 姚静洁 | A kind of breaker automatic testing equipment |
| CN107561402A (en) * | 2017-10-13 | 2018-01-09 | 国网新疆电力公司阿勒泰供电公司 | Power failure detection means |
| CN109471056B (en) * | 2018-12-29 | 2023-09-22 | 国网辽宁省电力有限公司电力科学研究院 | GIS lightning impulse withstand voltage and partial discharge test inspection system and inspection method |
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| JP2005304148A (en) * | 2004-04-09 | 2005-10-27 | Hitachi Industrial Equipment Systems Co Ltd | Insulation monitoring system |
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