CN114200271A - Voltage withstanding method for ports of high-voltage cabinet circuit breakers installed in rows - Google Patents
Voltage withstanding method for ports of high-voltage cabinet circuit breakers installed in rows Download PDFInfo
- Publication number
- CN114200271A CN114200271A CN202111548671.8A CN202111548671A CN114200271A CN 114200271 A CN114200271 A CN 114200271A CN 202111548671 A CN202111548671 A CN 202111548671A CN 114200271 A CN114200271 A CN 114200271A
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- Prior art keywords
- voltage
- circuit breaker
- cabinet
- ports
- withstand
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- 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 discloses a method for withstand voltage of high-voltage cabinet breaker ports installed in a row, which relates to the field of high-voltage electrical tests.A test method mainly comprises the steps of utilizing a feeder breaker in a running state as an auxiliary breaker to form an electrical loop under the hot standby state of a tested breaker, and measuring the insulation of the ports of other tested breakers with a common bus; and then the tested circuit breaker is used for testing the port insulation of the auxiliary circuit breaker in turn. The method for integrally withstand voltage of the port of the circuit breaker by using the primary loop is simple and easy to operate, the construction progress is effectively promoted, the labor cost is reduced, the circuit breaker is withstand voltage at the port in the cabinet body, and the safety risk is reduced.
Description
Technical Field
The invention relates to the field of high-voltage electrical tests, in particular to a method for resisting voltage of ports of circuit breakers of high-voltage cabinets installed in rows.
Background
In recent years, with the development of advanced manufacturing industry and the increase of the demand of industrial production for large-scale equipment, high-voltage switch cabinets are increasingly applied to construction projects. In order to ensure the safety of power transmission and reception, the high-voltage switch cabinet should be subjected to a high-voltage test before power transmission and reception according to the standard requirements, and in the high-voltage cabinet series test, the port insulation is directly related to the safety of power transmission and the safety of later use, so that the importance is self-evident. The port is withstand voltage and generally utilizes the dolly to take out the cubical switchboard with the circuit breaker, then directly tests the circuit breaker one by one outside the cabinet body. The test method has the advantages of low working efficiency, increased labor cost and high safety risk when the circuit breaker is drawn out back and forth.
Disclosure of Invention
In order to solve the problems of high labor cost, low efficiency, high safety risk and the like of high-voltage cabinet circuit breaker port voltage withstand test in the prior art, the invention provides a high-voltage cabinet circuit breaker port voltage withstand method which is installed in a row, and the one-time integral port voltage withstand of all circuit breakers can be quickly and efficiently carried out.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-voltage cabinet breaker port voltage withstanding method installed in a row sequentially comprises the following steps: a. putting the circuit breakers of the switch cabinets in a hot standby state; b. selecting a feeder circuit breaker as an auxiliary circuit breaker to be switched on and be in an operating state; c. grounding the lower port of the tested circuit breaker by using a thin fuse, and forming an electric loop by the auxiliary circuit breaker and the upper port of the tested circuit breaker; d. protecting and grounding the high-voltage live display; e. checking the insulation of the bus, and applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; f. checking the damage condition of the fuse to judge port insulation; g. opening the auxiliary circuit breaker, and selecting any one tested circuit breaker to be closed; h. applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; i. and (4) detecting the damage condition of the grounding fuse of the switched-on tested circuit breaker so as to judge the port insulation of the auxiliary circuit breaker.
In the method for withstand voltage of the ports of the circuit breakers of the high-voltage cabinet installed in the row, the row of switch cabinets already keep the busbar cabinet and the isolation cabinet in an operating state.
According to the voltage withstanding method for the ports of the high-voltage cabinet circuit breakers arranged in a row, the phase sequence of the high-voltage cabinet busbar is checked.
According to the voltage withstanding method for the ports of the circuit breakers of the high-voltage cabinet installed in the row, the high-voltage cabinet is subjected to voltage withstanding of the whole group of power frequency.
According to the withstand voltage method for the ports of the circuit breakers of the high-voltage cabinet installed in the row, the tested circuit breakers are in an opening state.
According to the voltage withstanding method for the ports of the high-voltage cabinet circuit breakers arranged in the row, when the split-phase power frequency is voltage withstanding, the non-test phase is grounded.
According to the method for withstand voltage of the ports of the circuit breakers of the high-voltage cabinet installed in the row, all the circuit breakers are tested in a hot standby state.
The method for testing the withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in a row is suitable for the circuit breakers with the voltage class of 3KV-35 KV.
The invention has the beneficial effects that the test method of the withstand voltage method of the high-voltage cabinet breaker port installed in a row mainly utilizes a feeder breaker in a running state as an auxiliary breaker to form an electric loop under the hot standby state of the breaker to be tested to measure the insulation of the port of each other breaker to be tested with a common bus; and then the tested circuit breaker is used for testing the port insulation of the auxiliary circuit breaker in turn. The method for integrally withstand voltage of the port of the circuit breaker by using the primary loop is simple and easy to operate, the construction progress is effectively promoted, the labor cost is reduced, the circuit breaker is withstand voltage at the port in the cabinet body, and the safety risk is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
fig. 2 is a schematic diagram of a circuit breaker hot standby;
fig. 3 is a schematic diagram of the circuit breaker operating state;
fig. 4 is a schematic diagram of feeder circuit breaker port withstand voltage;
fig. 5 is a schematic diagram of the auxiliary breaker port withstand voltage.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The present invention is not described in detail, but is known to those skilled in the art.
As shown in fig. 1 to 5, the method for withstand voltage of the ports of the circuit breakers of the high-voltage cabinet, which is installed in a row, of the invention sequentially comprises the following steps: a. putting the circuit breakers of the switch cabinets in a hot standby state; b. selecting a feeder circuit breaker as an auxiliary circuit breaker to be switched on and be in an operating state; c. grounding the lower port of the tested circuit breaker by using a thin fuse, and forming an electric loop by the auxiliary circuit breaker and the upper port of the tested circuit breaker; d. protecting and grounding the high-voltage live display; e. checking the insulation of the bus, and applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; f. checking the damage condition of the fuse to judge port insulation; g. opening the auxiliary circuit breaker, and selecting any one tested circuit breaker to be closed; h. applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; i. and (4) detecting the damage condition of the grounding fuse of the switched-on tested circuit breaker so as to judge the port insulation of the auxiliary circuit breaker.
In this embodiment, the in-line switch cabinet has already put the bus coupler cabinet and the isolation cabinet in an operating state, the phase sequence of the busbar of the high-voltage cabinet has been checked before the withstand voltage test, and the high-voltage cabinet has already carried out the entire group of power frequency withstand voltages.
In this embodiment, the tested circuit breaker is in an open state; when the split-phase power frequency is voltage-resistant, the non-test phase is grounded; the circuit breakers are all tested in a hot standby state.
In the embodiment, the test method is suitable for a 3KV-35KV voltage level circuit breaker.
When the testing method is applied, all the tested circuit breakers are in a hot standby state, one feeder circuit breaker in an operating state is used as an auxiliary circuit breaker to form an electric loop, and the insulation between the port of each tested circuit breaker and the port of the other tested circuit breakers with the common bus is measured; and then the tested circuit breaker is used for testing the port insulation of the auxiliary circuit breaker in turn. According to the high-voltage switch cabinet circuit breaker, the whole port voltage withstand test is carried out in the cabinet body, the circuit breaker does not need to be drawn out, the whole voltage withstand method is carried out on the circuit breaker port by using the primary loop, the construction method is simple and easy to operate, the construction progress is effectively promoted, the labor cost is reduced, the voltage withstand of the circuit breaker at the inner port of the cabinet body is realized, and the safety risk is reduced.
Claims (8)
1. A method for withstand voltage of high-voltage cabinet breaker ports installed in rows is characterized by comprising the following steps: the high-voltage cabinet breaker port voltage withstand method sequentially comprises the following steps: a. putting the circuit breakers of the switch cabinets in a hot standby state; b. selecting a feeder circuit breaker as an auxiliary circuit breaker to be switched on and be in an operating state; c. grounding the lower port of the tested circuit breaker by using a thin fuse, and forming an electric loop by the auxiliary circuit breaker and the upper port of the tested circuit breaker; d. protecting and grounding the high-voltage live display; e. checking the insulation of the bus, and applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; f. checking the damage condition of the fuse to judge port insulation; g. opening the auxiliary circuit breaker, and selecting any one tested circuit breaker to be closed; h. applying alternating voltage in a split-phase manner to carry out power frequency voltage withstand; i. and (4) detecting the damage condition of the grounding fuse of the switched-on tested circuit breaker so as to judge the port insulation of the auxiliary circuit breaker.
2. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 1, wherein: the in-line switch cabinet puts the main joint cabinet and the isolation cabinet in an operating state.
3. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 1 or 2, wherein: the phase sequence of the high-voltage cabinet busbar is checked.
4. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 3, wherein: the high-voltage board is subjected to whole group power frequency voltage resistance.
5. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 4, wherein: the tested circuit breaker is in an opening state.
6. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 4 or 5, wherein: when the split-phase power frequency is voltage-resistant, the non-test phase is grounded.
7. The method for withstand voltage of the ports of the high-voltage cabinet circuit breakers arranged in the row as claimed in claim 6, wherein: the circuit breakers are all tested in a hot standby state.
8. The method for withstanding voltage at the ports of the high-voltage cabinet breakers arranged in a row according to any one of claim 7, wherein: the test method is suitable for the circuit breaker with 3KV-35KV voltage level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548671.8A CN114200271A (en) | 2021-12-17 | 2021-12-17 | Voltage withstanding method for ports of high-voltage cabinet circuit breakers installed in rows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548671.8A CN114200271A (en) | 2021-12-17 | 2021-12-17 | Voltage withstanding method for ports of high-voltage cabinet circuit breakers installed in rows |
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| Publication Number | Publication Date |
|---|---|
| CN114200271A true CN114200271A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111548671.8A Pending CN114200271A (en) | 2021-12-17 | 2021-12-17 | Voltage withstanding method for ports of high-voltage cabinet circuit breakers installed in rows |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780234A (en) * | 2012-08-08 | 2012-11-14 | 中国二十二冶集团有限公司 | High-voltage electric debugging method for power generation project |
| CN104062578A (en) * | 2014-05-27 | 2014-09-24 | 中冶天工上海十三冶建设有限公司 | Actuation time measuring method for circuit breakers arranged in columns |
| CN108931699A (en) * | 2018-04-28 | 2018-12-04 | 孝感华工高理电子有限公司 | DC break down voltage test device |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
-
2021
- 2021-12-17 CN CN202111548671.8A patent/CN114200271A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780234A (en) * | 2012-08-08 | 2012-11-14 | 中国二十二冶集团有限公司 | High-voltage electric debugging method for power generation project |
| CN104062578A (en) * | 2014-05-27 | 2014-09-24 | 中冶天工上海十三冶建设有限公司 | Actuation time measuring method for circuit breakers arranged in columns |
| CN108931699A (en) * | 2018-04-28 | 2018-12-04 | 孝感华工高理电子有限公司 | DC break down voltage test device |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
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