CN208596896U - Automatic Switching on a kind of distribution net post using electronic sensor - Google Patents
Automatic Switching on a kind of distribution net post using electronic sensor Download PDFInfo
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- CN208596896U CN208596896U CN201821044602.7U CN201821044602U CN208596896U CN 208596896 U CN208596896 U CN 208596896U CN 201821044602 U CN201821044602 U CN 201821044602U CN 208596896 U CN208596896 U CN 208596896U
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- 229910018503 SF6 Inorganic materials 0.000 claims description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The utility model discloses automatic Switchings on a kind of distribution net post using electronic sensor, including switching device, line feed terminals and the supply voltage mutual inductor connected by cable mutually, switching device includes Switch main body, electronic voltage transducer and electronic type current sensor, the voltage and current status information of electronic voltage transducer and electronic type current sensor acquisition Switch main body.The utility model has technical effect that the power distribution network on-pole switch design for having both measurement, protection and metering can effectively improve the O&M quality and efficiency of on-pole switch equipment, and site installation test is convenient, greatly reduces power off time；Electric current, voltage sample precision are increased to metering rank using electronic sensor, are able to satisfy the requirement such as fault detection, measurement, metering；Increase matching net wire loss management and feeder automation function, helps to promote controller switching equipment operation level；One secondary device is connected using aviation connector, improves interface compatibility and leakproofness.
Description
Technical field
The utility model relates to automatic Switchings on a kind of distribution net post using electronic sensor.
Background technique
With the development of computer and digital technology, electric system has begun steering automation, and digitlization is intelligent,
The demand of switching devices also gradually to modularization, miniaturization, it is multi-functional, non-maintaining in terms of change.It is opened on current power distribution net post
Closing the Automation Design and transformation mainly has following problems: first and second equipment interface mismatches, compatibility, scalability, interchangeability
Difference；First and second equipment manufacturer's responsibility dispute is indefinite；Lack line loss function of measuring；There are equipment dew condensation phenomenons；Traditional electromagnetism
Formula electric current, voltage sensor measurement dynamic range is small, frequency band is narrow, needs additional signal to turn when connecting with digitlization secondary device
Exchange device.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides on a kind of distribution net post using electronic sensor
Automatic Switching realizes integrated, standard of the related power distribution network on-pole switch equipment in structure, function and operation and maintenance
Change, while meeting metering, the function that the line loss of protection is measured.
In order to achieve the above technical purposes, the technical solution of the utility model is:
Automatic Switching on a kind of distribution net post using electronic sensor, the switch connected including passing through cable mutually
Device, Feeder Terminal Unit and supply voltage mutual inductor, the switching device include Switch main body, electronic voltage transducer
And electronic type current sensor, the voltage of the electronic voltage transducer and electronic type current sensor acquisition Switch main body
With current state information and be sent to Feeder Terminal Unit, the Feeder Terminal Unit includes line loss acquisition module, acquisition control
Molding block and fault processing module, the line loss acquisition module receive the voltage and current status information of acquisition Switch main body simultaneously
It is sent to acquisition control module, acquisition control module is sent to troubleshooting mould after receiving the information of line loss acquisition module and processing
Block, the supply voltage mutual inductor connection switch ontology simultaneously provide driving power for Feeder Terminal Unit.
Automatic Switching on a kind of distribution net post using electronic sensor, the electronic type voltage sensing
Device includes high-voltage arm resistance R1, low-voltage arm resistance R2, bucking electrode Pb, overvoltage protection Pov and voltage sensor output electricity
Then road, the high-voltage arm resistance R1 connection switch ontology are connected with obtaining the voltage of Switch main body with low-voltage arm resistance R2
After be grounded, voltage output lines it is in parallel with low-voltage arm resistance R2 with export by low-voltage arm resistance R2 partial pressure after voltage signal, institute
The overvoltage protection Pov stated is parallel in voltage output lines, and the bucking electrode Pb is set to voltage output lines
Output end.
Automatic Switching on a kind of distribution net post using electronic sensor, electronic type current sensor include
The less first winding of the number of turns, iron core, the number of turns more secondary winding and shunt resistance, the first winding and Switch main body
It connects and is wound in iron core side, the secondary winding is wound in the iron core side other side, and is in series in secondary winding point
Leakage resistance.
Automatic Switching on a kind of distribution net post using electronic sensor further includes closing gas tank, described
Switch main body, electronic type voltage transformer and electronic current mutual inductor be all set in closing gas tank in, close gas tank in fill
Sulfur hexafluoride gas gas.
Automatic Switching on a kind of distribution net post using electronic sensor, the Switch main body, electronics
End between formula voltage sensor and electronic type current sensor for the cable of connection is to connect equipped with the protection of insulated enclosure cover
The aviation socket of mouth.
Automatic Switching on a kind of distribution net post using electronic sensor, cable are double layer screen multiple twin
Line.
It on-pole switch ontology, Feeder Terminal Unit in the utility model and is connect between supply voltage mutual inductor using aviation
Plug-in unit connection, the aerial aviation socket of exposure is sealed metallic conductor using sealing material, to improve its anti-dewing
Performance；Traditional electromagnetic potential, current transformer are replaced with into electronic voltage transducer and electronic current sensing respectively
Device, and be built in on-pole switch ontology, it solves the problems, such as that conventional current mutual inductor anti-saturation degree is low, reduces distribution net post
The in-site installation complexity of upper switch, improves device integration；The built-in line loss acquisition module in line feed terminals, and configure rich
Rich electricity computing function；The built-in fault processing module in line feed terminals, and adjustable control logic is configured, thus not
It relies on main website and completes the route selection on the spot of singlephase earth fault, section positioning under conditions of communicating and be isolated；Equipment is by producer one
The bodyization supply of material, batch production integrated debugging.
Therefore, the utility model has the advantage that
The power distribution network on-pole switch design for having both measurement, protection and metering can effectively improve the O&M matter of on-pole switch equipment
Amount and efficiency, site installation test is convenient, greatly reduces power off time；It is using electronic sensor that electric current, voltage sample is smart
Degree is increased to metering rank, is able to satisfy the requirement such as fault detection, measurement, metering；Increase matching net wire loss management and feeder automation
Function helps to promote controller switching equipment operation level；One secondary device is connected using aviation connector, improves the compatibility of interface
Property and leakproofness.
Detailed description of the invention
Fig. 1 be the utility model proposes the power distribution network on-pole switch design frame chart for having both measurement, protection and metering；
Fig. 2 is the electronic type voltage transformer schematic diagram that the utility model uses；
Fig. 3 is the electronic current mutual inductor schematic diagram that the utility model uses；
Aviation connector signal of the Fig. 4 between the utility model line feed terminals used and power distribution network on-pole switch ontology
Figure.
Specific embodiment
Below with reference to example and attached drawing, the utility model is described in further detail.
The overall structure of the utility model is as shown in Figure 1, by power distribution network on-pole switch ontology, Feeder Terminal Unit, power supply
Voltage transformer, aviation connector etc. are constituted.
Power distribution network on-pole switch body design: Threephase common-box structure, SF6 gas-insulated, vacuum extinction, external insulation are used
Using compound inslation；Using operating mechanism and the integrated structure of ontology, and it is built in closing gas tank；Using army's grade aviation
Socket, aviation socket are configured with insulated enclosure cover protection interface；Shell degree of protection is IP67；On-pole switch in-built electrical minor electricity
Pressure sensor and electronic type current sensor, for acquiring three-phase voltage, three-phase current, residual voltage and zero-sequence current.
Electronic type voltage transformer design: its schematic diagram is as shown in Figure 2.Mutual inductor is by high-voltage arm resistance R1, low-voltage arm electricity
Hinder R2, bucking electrode Pb, overvoltage protection Pov composition.Primary voltage is converted into and primary voltage by voltage divider principle
The small voltage signal proportional with phase, as shown in formula (1).
The influence for improving field distribution situation and stray capacitance using the method for bucking electrode, in secondary output end parallel connection one
A overvoltage protection prevents from improving secondary side voltage when secondary output end is opened a way.Electronic type voltage transformer is specific
Parameter is as follows:
Structure: three-phase integrated plus independent zero sequence sampling
Phase voltage no-load voltage ratio:
Phase voltage class of accuracy: 0.5 grade
Residual voltage no-load voltage ratio:
Residual voltage class of accuracy: 1 grade
Electronic current mutual inductor design: its schematic diagram is as shown in figure 3, by once winding N1, small iron core and loss it is minimum
The secondary winding N of change2Composition.Shunt resistance R is connected in secondary winding2, secondary current I2In shunt resistance R2The voltage at both ends
U drops2With primary current I1It is proportional, as shown in formula (2).
Electronic current mutual inductor design parameter is as follows:
In order to guarantee the accuracy and safety of omicronff signal transmission, the signal of electronic current, voltage transformer is avoided
It is interfered by external signal, cable is all made of double layer screen twisted pair to carry out the transmission of signal, point of switch-side cable
Layer shielded layer and total shielded layer and total shielded layer all reliable grounds of terminal side guarantee signal transmission.
Line feed terminals design: board hardware realization chip-level encryption；Built-in line loss acquisition module, acquisition control module and event
Hinder processing module；It configures 10 core aviation sockets and is used for transmission energy storage, divide-shut brake control and Switch main body status signal, 14 core aviations
Socket is used for transmission the small signal of weak voltage analog of electronic voltage transducer and electronic type current sensor acquisition.Line feed terminals
Aviation connector structure between Switch main body is as shown in Figure 4.
Fault processing module design: having Adaptive synthesis type feeder automation function on the spot, do not depend on main website and communication,
By short circuit/Earth Fault Detection technology, without pressure separating brake, failure path adaptive delay incoming call close a floodgate etc. control logics, it is adaptive
The multi-joint network Distribution Network Frame of multiple-limb is answered, realizes that the route selection on the spot of singlephase earth fault, section position and be isolated.
The design of line loss acquisition module: supporting hot plug, can individually be measured, be verified, and meets metering evidence obtaining and pattern is real
The requirement tested；It is communicated using RS232 and line feed terminals, power supply is powered using DC24V；The electric flux for having and being measured
(active/idle) directly proportional light pulse output and electric pulse output, wherein light pulse output use superbright, long-life LED device
Part, electric pulse output has electrical isolation, and can acquire from front；Have three-phase voltage, three-phase current, frequency, zero-sequence current
With
Residual voltage measures function；Has the calculating of four-quadrant active energy, capacity of idle power calculates, power factor calculates function
Energy；Four-quadrant active energy, capacity of idle power are calculated as 0.5S class precision, power factor resolution ratio 0.01；Has continuous data jelly
Tie function, including day, the moon freezing data, freezing data when power direction changes；It is able to achieve segmentation line loss metering；Have and passes through
101, continuous data is uploaded to the ability of distribution main website by 104 specification modes by line feed terminals.
Claims (6)
1. automatic Switching on a kind of distribution net post using electronic sensor, which is characterized in that including passing through cable mutually
Switching device, Feeder Terminal Unit and the supply voltage mutual inductor of connection, the switching device include Switch main body, electronic type
Voltage sensor and electronic type current sensor, the electronic voltage transducer and electronic type current sensor acquisition switch
The voltage and current status information of ontology is simultaneously sent to Feeder Terminal Unit, and the Feeder Terminal Unit includes line loss acquisition mould
Block, acquisition control module and fault processing module, the line loss acquisition module receive the voltage and current of acquisition Switch main body
Status information is simultaneously sent to acquisition control module, and acquisition control module is sent to after receiving the information of line loss acquisition module and processing
Fault processing module, the supply voltage mutual inductor connection switch ontology simultaneously provide driving power for Feeder Terminal Unit.
2. automatic Switching on a kind of distribution net post using electronic sensor according to claim 1, feature exist
In the electronic voltage transducer includes high-voltage arm resistance R1, low-voltage arm resistance R2, bucking electrode Pb, overvoltage protection
Device Pov and voltage sensor output circuit, the high-voltage arm resistance R1 connection switch ontology to obtain the voltage of Switch main body,
Then it is grounded with after low-voltage arm resistance R2 series connection, voltage output lines are in parallel with low-voltage arm resistance R2 to export by low-voltage arm resistance
Voltage signal after R2 partial pressure, the overvoltage protection Pov are parallel in voltage output lines, the bucking electrode
Pb is set to the output end of voltage output lines.
3. automatic Switching on a kind of distribution net post using electronic sensor according to claim 1, feature exist
In, electronic type current sensor include the more secondary winding and shunt resistance of the less first winding of the number of turns, iron core, the number of turns,
The first winding connects with Switch main body and is wound in iron core side, and it is another that the secondary winding is wound in iron core side
Side, and shunt resistance is in series in secondary winding.
4. automatic Switching on a kind of distribution net post using electronic sensor according to claim 1, feature exist
In, further include closing gas tank, the Switch main body, electronic type voltage transformer and electronic current mutual inductor are all set in envelope
It holds one's breath in case, closes in gas tank and fill sulfur hexafluoride gas gas.
5. automatic Switching on a kind of distribution net post using electronic sensor according to claim 1, feature exist
In the end of the cable between the Switch main body, electronic voltage transducer and electronic type current sensor for connecting
For the aviation socket equipped with insulated enclosure cover protection interface.
6. automatic Switching on a kind of distribution net post using electronic sensor according to claim 1, feature exist
In cable is double layer screen twisted pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044602.7U CN208596896U (en) | 2018-07-03 | 2018-07-03 | Automatic Switching on a kind of distribution net post using electronic sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044602.7U CN208596896U (en) | 2018-07-03 | 2018-07-03 | Automatic Switching on a kind of distribution net post using electronic sensor |
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| Publication Number | Publication Date |
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| CN208596896U true CN208596896U (en) | 2019-03-12 |
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| CN201821044602.7U Active CN208596896U (en) | 2018-07-03 | 2018-07-03 | Automatic Switching on a kind of distribution net post using electronic sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493821A (en) * | 2018-07-03 | 2018-09-04 | 国网湖南省电力有限公司 | Automatic Switching on a kind of distribution net post using electronic sensor |
| CN110213540A (en) * | 2019-06-04 | 2019-09-06 | 北京合锐赛尔电力科技股份有限公司 | Line feed terminals control method based on image recognition on-pole switch state acquisition |
| CN112924732A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Metering device external member and metering system |
-
2018
- 2018-07-03 CN CN201821044602.7U patent/CN208596896U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493821A (en) * | 2018-07-03 | 2018-09-04 | 国网湖南省电力有限公司 | Automatic Switching on a kind of distribution net post using electronic sensor |
| CN110213540A (en) * | 2019-06-04 | 2019-09-06 | 北京合锐赛尔电力科技股份有限公司 | Line feed terminals control method based on image recognition on-pole switch state acquisition |
| CN112924732A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Metering device external member and metering system |
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