CN111697790A - Power supply control system of pole-mounted circuit breaker - Google Patents
Power supply control system of pole-mounted circuit breaker Download PDFInfo
- Publication number
- CN111697790A CN111697790A CN202010541757.7A CN202010541757A CN111697790A CN 111697790 A CN111697790 A CN 111697790A CN 202010541757 A CN202010541757 A CN 202010541757A CN 111697790 A CN111697790 A CN 111697790A
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- CN
- China
- Prior art keywords
- pole
- circuit breaker
- dry
- controller
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a power supply control system of a pole-mounted circuit breaker, which belongs to the technical field of electrical equipment and comprises a pole-mounted circuit breaker, a dry-type transformer, a capacitance-resistance voltage sensor, a mounting bracket, a controller, a hoop and a cement pole, wherein the wire inlet end of the pole-mounted circuit breaker is electrically connected with the primary side of the dry-type transformer, the primary side of the dry-type transformer is electrically connected with the primary side of the capacitance-resistance voltage sensor, the secondary side of the dry-type transformer is electrically connected with the controller, the secondary side of the capacitance-resistance voltage sensor is electrically connected with the controller, the pole-mounted circuit breaker is electrically connected with the controller, and the pole-mounted circuit breaker, the dry-type transformer, the capacitance-resistance voltage sensor, the mounting bracket, the controller and the. The power supply control system can directly get electricity on the high-voltage busbar, supplies power to a secondary circuit of the system, realizes intelligent opening and closing of the circuit breaker, can replace the functions realized by the conventional voltage transformer in the prior art, enlarges the capacity of secondary power supply, and has stable performance and high reliability.
Description
Technical Field
The invention relates to a pole-mounted circuit breaker, in particular to a power supply control system of the pole-mounted circuit breaker, and belongs to the technical field of electrical equipment.
Background
In order to improve the power supply reliability, the pole-mounted circuit breakers are generally used for connecting, segmenting and branching lines in a power grid, and the pole-mounted circuit breakers on each line are distributed in a step-by-step mode. The power supply mode avoids override tripping caused by the fault of the tail end of the line. In an alternating current distribution system such as a rural power grid, an industrial and mining enterprise, a residential district and the like, a high-voltage loop of the alternating current distribution system is usually controlled by a pole-mounted circuit breaker. PT, namely a voltage transformer, is added into the system, and is generally directly arranged on a bus to provide a power supply for a system control loop and detect the voltage of the bus to realize a protection function. With traditional PT, the line is prone to find resonance, causing pollution to the power supply, and resonance overvoltage is prone to cause explosion.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide a power supply control system of a pole-mounted circuit breaker, which uses a dry-type transformer and a resistance-capacitance voltage sensor. The secondary power supply capacity can be enlarged, the occurrence of resonance is reduced, and the problems in the background art can be effectively solved.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses a power supply control system of a pole-mounted circuit breaker, which comprises the pole-mounted circuit breaker, a dry-type transformer, a resistance-capacitance voltage sensor, a mounting bracket, a controller, a hoop and a cement pole, wherein the wire inlet end of the pole-mounted circuit breaker is electrically connected with the primary side of the dry-type transformer, the primary side of the dry-type transformer is electrically connected with the primary side of the resistance-capacitance voltage sensor, the secondary side of the dry-type transformer is electrically connected with the controller, the secondary side of the resistance-capacitance voltage sensor is electrically connected with the controller, the pole-mounted circuit breaker is electrically connected with the controller, and the pole-mounted circuit breaker, the dry-type transformer, the resistance-capacitance voltage sensor, the mounting bracket, the controller and the hoop.
As a preferred technical solution of the present invention, the dry-type transformer provides a working power supply for the controller.
As a preferred technical solution of the present invention, the rc voltage sensor is mounted on the dry-type transformer and electrically connected to the dry-type transformer, so as to provide a voltage measurement function for the system.
The invention has the following beneficial effects:
the power supply system can directly get electricity on the high-voltage busbar, provides a working power supply for the secondary circuit, monitors the electric quantity, can replace the function realized by the conventional PT, reduces the generation of harmonic waves, reduces the overall production cost of equipment, is also favorable for installation and maintenance, and has stable performance, simple structure and high reliability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic diagram of a power supply system for a pole break according to an embodiment of the present invention;
reference numeral 1 in the figure, a circuit breaker; 2. a dry-type transformer; 3. a resistive-capacitive voltage sensor; 4, mounting a bracket; 5. a controller; 6. hooping; 7. a cement pole.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1, the power supply system of the pole-mounted circuit breaker of the present invention includes a pole-mounted circuit breaker 1, a dry-type transformer 2, a capacitance-resistance voltage sensor 3, a mounting bracket 4, a controller 5, a hoop 6 and a cement pole 7, wherein a wire inlet end of the pole-mounted circuit breaker 1 is electrically connected to a primary side of the dry-type transformer 2, a primary side of the dry-type transformer 2 is electrically connected to a primary side of the capacitance-resistance voltage sensor 3, a secondary side of the dry-type transformer 2 is electrically connected to a control chamber 5, a secondary side of the capacitance-resistance voltage sensor 3 is electrically connected to the controller 5, a lower terminal socket of the pole-mounted circuit breaker 1 is electrically connected to the controller 5, and the pole-mounted circuit breaker 1, the dry-type transformer 2, the capacitance-resistance voltage sensor 3, the mounting bracket 4, the controller 5 and the hoop 6 are.
For maintenance convenience and stability enhancement, the dry transformer of the device 2 provides operating power for the controller 5.
In order to achieve low power consumption and free installation, the device 3 is a resistance-capacitance voltage sensor which measures secondary voltage accurately.
The dry-type transformer 2 of the present invention converts a high voltage (10kV) into a standard low voltage (220V) for protection and provides an operation power source of the controller 5. The resistance-capacitance voltage sensor 3 converts a high voltage (10kV) into a low voltage (100V) for measurement and metering. The primary side 10kV voltage of the pole-mounted circuit breaker 1 is stepped down by the dry-type transformer 2 and the resistance-capacitance type voltage sensor 3, and converted into a voltage required by the controller. The controller 5 is butted with the pole-mounted circuit breaker 1, so that the control of the pole-mounted circuit breaker 1 is realized. Compared with the traditional PT power supply and measurement mode, the power supply of the dry type transformer is adopted, the resistance-capacitance voltage sensor is used for providing measurement signals, the resonance can be reduced, the pollution to a power supply is reduced, and meanwhile, the power consumption is also reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The power supply control system of the pole-mounted circuit breaker comprises a pole-mounted circuit breaker (1), a dry-type transformer (2), a resistance-capacitance voltage sensor (3), a mounting bracket (4), a controller (5), a hoop (6) and a cement rod (7), and is characterized in that the wire inlet end of the pole-mounted circuit breaker (1) is electrically connected with the primary side of the dry-type transformer (2), the primary side of the dry-type transformer (2) is electrically connected with the primary side of the resistance-capacitance voltage sensor (3), the secondary side of the dry-type transformer (3) is electrically connected with the controller (5), the secondary side of the resistance-capacitance voltage sensor (3) is electrically connected with the controller (5), the pole-mounted circuit breaker (1) is electrically connected with the controller (5), and the pole-mounted circuit breaker (1), the dry-type transformer (2), the resistance-capacitance voltage sensor (3), the mounting bracket (4), The controller (5) and the anchor ear (6) are both arranged on the cement pole (7).
2. A pole break power supply control system according to claim 1 characterized in that the dry transformer (3) provides the controller (5) with working power.
3. A pole break power supply control system according to claim 1 or 2 characterized in that the said rc voltage sensor (3) is mounted on the dry transformer (2) and electrically connected to it to provide the voltage measurement function for the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541757.7A CN111697790A (en) | 2020-06-15 | 2020-06-15 | Power supply control system of pole-mounted circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541757.7A CN111697790A (en) | 2020-06-15 | 2020-06-15 | Power supply control system of pole-mounted circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111697790A true CN111697790A (en) | 2020-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010541757.7A Pending CN111697790A (en) | 2020-06-15 | 2020-06-15 | Power supply control system of pole-mounted circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN111697790A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204256059U (en) * | 2014-06-12 | 2015-04-08 | 国网重庆市电力公司检修分公司 | A kind of 10kV shunt reactor switching service test system |
| CN104901342A (en) * | 2015-04-30 | 2015-09-09 | 大连理工大学 | Capacitor voltage division-based high-voltage electricity taking device |
| CN106526284A (en) * | 2016-10-27 | 2017-03-22 | 国网四川省电力公司甘孜供电公司 | Electronic type voltage sensor |
| CN108320988A (en) * | 2018-01-08 | 2018-07-24 | 珠海许继电气有限公司 | A kind of 10kV pole-mounted circuit breakers |
| CN108357395A (en) * | 2018-03-07 | 2018-08-03 | 常州安凯特电缆有限公司 | Railway power system and outdoor parallel modular device for railway power system |
| CN110136940A (en) * | 2019-05-20 | 2019-08-16 | 国网陕西省电力公司西安供电公司 | One kind is based on capacitor series connection constant-current source high pressure energy taking device |
| CN110473739A (en) * | 2019-08-19 | 2019-11-19 | 陕西省地方电力(集团)有限公司延安供电分公司 | A kind of novel one or two fusions vacuum circuit breaker polar |
-
2020
- 2020-06-15 CN CN202010541757.7A patent/CN111697790A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204256059U (en) * | 2014-06-12 | 2015-04-08 | 国网重庆市电力公司检修分公司 | A kind of 10kV shunt reactor switching service test system |
| CN104901342A (en) * | 2015-04-30 | 2015-09-09 | 大连理工大学 | Capacitor voltage division-based high-voltage electricity taking device |
| CN106526284A (en) * | 2016-10-27 | 2017-03-22 | 国网四川省电力公司甘孜供电公司 | Electronic type voltage sensor |
| CN108320988A (en) * | 2018-01-08 | 2018-07-24 | 珠海许继电气有限公司 | A kind of 10kV pole-mounted circuit breakers |
| CN108357395A (en) * | 2018-03-07 | 2018-08-03 | 常州安凯特电缆有限公司 | Railway power system and outdoor parallel modular device for railway power system |
| CN110136940A (en) * | 2019-05-20 | 2019-08-16 | 国网陕西省电力公司西安供电公司 | One kind is based on capacitor series connection constant-current source high pressure energy taking device |
| CN110473739A (en) * | 2019-08-19 | 2019-11-19 | 陕西省地方电力(集团)有限公司延安供电分公司 | A kind of novel one or two fusions vacuum circuit breaker polar |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 214000 No.23 Changjiang South Road, Xinwu District, Wuxi City, Jiangsu Province Applicant after: Wuxi Guangying Group Co.,Ltd. electrical manufacturing branch Address before: 214000 No.23 Changjiang South Road, Xinwu District, Wuxi City, Jiangsu Province Applicant before: Electrical Appliance Manufacturing Branch of Wuxi Xineng Electric Power Industry Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
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| RJ01 | Rejection of invention patent application after publication |