CN213780272U - High-voltage motor insulation automatic test system suitable for thermal power plant - Google Patents
High-voltage motor insulation automatic test system suitable for thermal power plant Download PDFInfo
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- CN213780272U CN213780272U CN202023259557.7U CN202023259557U CN213780272U CN 213780272 U CN213780272 U CN 213780272U CN 202023259557 U CN202023259557 U CN 202023259557U CN 213780272 U CN213780272 U CN 213780272U
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Abstract
The utility model discloses an automatic insulation test system of a high-voltage motor, which is suitable for a thermal power plant and comprises the high-voltage motor, a high-voltage circuit breaker, a high-voltage insulation resistance tester and three high-voltage resistors with the same resistance value; one ends of the three high-voltage resistors are respectively connected with three outgoing lines of the high-voltage circuit breaker; the other ends of the three high-voltage resistance rods are connected through one end of a high-voltage wire, and the other end of the high-voltage wire is connected with a high-voltage insulation resistance tester. The utility model discloses reduce personnel's complexity of operation, improved work efficiency, avoided because of frequently operating the trouble and the risk of electric shock that the high tension switchgear brought.
Description
Technical Field
The utility model relates to a high voltage motor's insulation test method, concretely relates to high voltage motor insulation automatic test system suitable for thermal power factory.
Background
When a current thermal power plant carries out insulation test of a high-voltage motor, an operator needs to carry out the following operations:
1. the high-voltage circuit breaker is withdrawn from the switch cabinet to the outside of the cabinet, the special insulation test trolley is pushed into the switch cabinet, the high-voltage test wire is connected to the high-voltage cable on the side of the motor by the handheld electric megger, and then the electric megger is started to carry out testing.
2. After the test is finished, the special insulation test trolley is retreated to the outside of the switch cabinet, and then the high-voltage circuit breaker is pushed into the switch cabinet.
The testing method has the advantages of high labor intensity of personnel, low testing efficiency and electric shock risk. The work load of insulation test of high-voltage motor in power plant is very big, the operation regulation rule needs the test once every half a month, power plant high-voltage motor quantity exceeds 50, the operation work load of operation personnel is very big, operation must two people go on simultaneously at every turn, consume about 24 hours of a large amount of time, simultaneously, the operation personnel frequently operates high tension switchgear, high-tension apparatus, the risk of electric shock is very big, high tension switchgear frequently operates, because of personnel's skill level difference, high tension switchgear also breaks down very easily.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the complexity of personnel's operation is reduced, improves work efficiency, avoids because of the trouble and the risk of electrocuting that frequently operate high tension switchgear and bring. The utility model provides a solve above-mentioned problem's an automatic test system of high-voltage motor insulation suitable for thermal power factory.
The utility model discloses a following technical scheme realizes:
a high-voltage motor insulation automatic test system suitable for a thermal power plant comprises a high-voltage motor, a high-voltage circuit breaker, a high-voltage insulation resistance tester and three high-voltage resistors with the same resistance value;
one ends of the three high-voltage resistors are respectively connected with three outgoing lines of the high-voltage circuit breaker; the other ends of the three high-voltage resistors are connected through one end of a high-voltage wire, and the other end of the high-voltage wire is connected with a high-voltage insulation resistance tester.
Preferably, a first interface of the high-voltage insulation resistance tester is connected with an alarm device; a second interface of the high-voltage insulation resistance tester is grounded; and a third interface of the high-voltage insulation resistance tester is connected with a power supply.
Preferably, the high-voltage insulation resistance tester uploads test data to a remote computer through an RS485 communication interface.
In order to protect the high-voltage wire, preferably, a protective hose is sleeved outside the high-voltage wire.
Specifically, the insulation value test range of the high-voltage insulation resistance tester is 0-2000M omega, and 9999 overflow is displayed when the insulation value test range exceeds 2000M omega.
The working principle of the system is as follows:
before testing, firstly, the equipment is powered off, and safety measures are made; installing three high-voltage resistors in a wire outlet chamber of the switch cabinet according to a construction scheme, and laying one high-voltage wire to be tested to a secondary wiring small chamber; and (4) installing an insulation testing device in the secondary wiring chamber, and fixing the bracket. The high-voltage circuit breaker comprises three high-voltage resistors with the same resistance, wherein one ends of the three high-voltage resistors are connected to three outgoing lines of the high-voltage circuit breaker respectively, the other ends of the three high-voltage resistors are connected through high-voltage wires, the three high-voltage resistors are connected with a high-voltage insulation resistance tester through the high-voltage wires, one end of the high-voltage insulation resistance tester is grounded, one end of the high-voltage insulation resistance tester is connected with a power supply, the other end of the high-voltage insulation resistance tester is connected with an alarm device, after the high-voltage insulation resistance tester is completed, the high-voltage insulation resistance tester is powered on, a starting button is pressed, the high-voltage insulation resistance tester automatically tests, the insulation value is read manually, and when the insulation value is lower than a set threshold value, the alarm device gives an alarm prompt.
The utility model discloses have following advantage and beneficial effect:
the utility model relates to an insulating automatic test system of high-voltage motor suitable for thermal power factory through utilizing high-voltage insulation resistance tester, realizes carrying out automatic test to the high-voltage motor insulation of thermal power factory, reduces operation personnel intensity of labour, reduces the damage probability that high-voltage switch frequent operation brought, improve equipment automation operation level, the operation personnel need not complicated operation, the operation only needs 1 minute at every turn, has improved work efficiency, there is not any risk of electrocution, high-voltage equipment also can not frequent damage.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is the utility model relates to a high-voltage motor insulation automatic test system's test schematic diagram suitable for thermal power factory.
Reference numbers and corresponding part names in the drawings:
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
When a thermal power plant carries out insulation test on a high-voltage motor at present, operators need to withdraw a high-voltage circuit breaker from a switch cabinet to the outside of the cabinet and then push a special insulation test trolley into the switch cabinet; testing by using a handheld electric megger, connecting a high-voltage test line of the handheld electric megger to a high-voltage cable on the side of a high-voltage motor, and starting the electric megger to perform testing; after the test is finished, the special insulation test trolley is retreated to the outside of the switch cabinet, and then the high-voltage circuit breaker is pushed into the switch cabinet. The testing method has the advantages of high labor intensity of workers, low testing efficiency, high electric shock risk and possible switch cabinet outlet line fault due to frequent operation of the switch cabinet. The embodiment provides an automatic insulation test system for a high-voltage motor, which is applicable to a thermal power plant, and the test principle of the automatic insulation test system is shown in fig. 1, and specifically comprises the high-voltage motor, a high-voltage circuit breaker, a high-voltage insulation resistance tester and three high-voltage resistors with the same resistance value; one end of each of the three high-voltage resistors is connected with three outgoing lines of the high-voltage circuit breaker respectively; the other ends of the three high-voltage resistors are connected through one end of a high-voltage wire, and the other end of the high-voltage wire is connected with a No. 9 wiring port of the high-voltage insulation resistance tester.
The 1, 2 and 3 wiring ports of the high-voltage insulation resistance tester can realize the transmission of test data to a remote computer through an RS485 communication interface; the 11 and 12 wiring ports of the high-voltage insulation resistance tester are connected with a power supply; 17 wiring ports of the high-voltage insulation resistance tester are grounded; and the wiring ports 13 and 14 of the high-voltage insulation resistance tester are connected with an alarm device.
The working process of the embodiment:
before testing, firstly, the equipment is powered off, and safety measures are made; installing three high-voltage resistors in a wire outlet chamber of the switch cabinet according to a construction scheme, and laying one high-voltage wire to be tested to a secondary wiring small chamber; and (4) installing an insulation testing device in the secondary wiring chamber, and fixing the bracket. After the test is finished, the high-voltage insulation resistance tester is powered on, a start button is pressed, the high-voltage insulation resistance tester automatically tests, the insulation value is manually read, and when the insulation value is lower than a set threshold value, the alarm device gives an alarm.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The high-voltage motor insulation automatic test system suitable for the thermal power plant comprises a high-voltage motor and a high-voltage circuit breaker, and is characterized by further comprising a high-voltage insulation resistance tester and three high-voltage resistors with the same resistance;
one ends of the three high-voltage resistors are respectively connected with three outgoing lines of the high-voltage circuit breaker; the other ends of the three high-voltage resistors are connected through one end of a high-voltage wire, and the other end of the high-voltage wire is connected with a high-voltage insulation resistance tester.
2. The system for automatically testing the insulation of the high-voltage motor applicable to the thermal power plant is characterized in that the first interface of the high-voltage insulation resistance tester is connected with an alarm device; a second interface of the high-voltage insulation resistance tester is grounded; and a third interface of the high-voltage insulation resistance tester is connected with a power supply.
3. The system of claim 1, wherein the high voltage insulation resistance tester uploads test data to a remote computer through an RS485 communication interface.
4. The system of claim 1, wherein the high voltage conductor is externally sleeved with a protective hose.
5. The automatic insulation testing system for the high-voltage motor of the thermal power plant as claimed in claim 1, wherein the insulation value of the high-voltage insulation resistance tester ranges from 0 to 2000M Ω, and 9999 overflow is indicated when the insulation value exceeds 2000M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023259557.7U CN213780272U (en) | 2020-12-29 | 2020-12-29 | High-voltage motor insulation automatic test system suitable for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023259557.7U CN213780272U (en) | 2020-12-29 | 2020-12-29 | High-voltage motor insulation automatic test system suitable for thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213780272U true CN213780272U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023259557.7U Active CN213780272U (en) | 2020-12-29 | 2020-12-29 | High-voltage motor insulation automatic test system suitable for thermal power plant |
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| Country | Link |
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| CN (1) | CN213780272U (en) |
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2020
- 2020-12-29 CN CN202023259557.7U patent/CN213780272U/en active Active
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