CN202424718U - Low voltage power line carrier isolator - Google Patents
Low voltage power line carrier isolator Download PDFInfo
- Publication number
- CN202424718U CN202424718U CN2012200654100U CN201220065410U CN202424718U CN 202424718 U CN202424718 U CN 202424718U CN 2012200654100 U CN2012200654100 U CN 2012200654100U CN 201220065410 U CN201220065410 U CN 201220065410U CN 202424718 U CN202424718 U CN 202424718U
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- China
- Prior art keywords
- voltage power
- power line
- branch road
- low voltage
- branch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a low voltage power line carrier isolator which comprises a branch 1 and a branch 2 which are connected with a bus or a zero line of a single phase low voltage power line in series. The branch 1 is composed of an inductance coil L1 and a capacitor C1 which are connected in parallel. The branch 2 is composed of an inductance coil L2 and a capacitor C2 which are connected in parallel. A filtering capacitor C3 is connected between a public connection point of the branch 1 and the branch 2 which are in series connection and the zero line or the bus of the single phase low voltage power line. The low voltage power line carrier isolator has the advantages of being simple in structure, low in cost, capable of effectively isolating signal interference between two carrier control networks and convenient to install.
Description
Technical field
The utility model relates to a kind of low voltage power line carrier isolator, belongs to the power-line carrier communication field.
Background technology
Utilize the low-voltage power line carrier transmission that various municipal systems have been realized automatic management; As in low-voltage power line by collector that has transceiver and user have that the kilowatt-hour meter of transceiver constitutes the carrier wave Automatic meter reading system; Can save a large amount of manpower and materials; Can also in time analyze failure conditions such as power transmission line loss and electric leakage, have huge economic benefit, generally receive publicity.
Present low-voltage power line carrier transmission system performance, weak effect, mainly be load too abominable, change big, during not electricity consumption of user, load is bordering on open circuit; One family just reaches several kilowatts during electricity consumption, suitable tens ohm resistance, and user's multi-load more is heavy more; Having various power consumption equipments to produce multiple stronger interference, its frequency spectrum is very wide, and power line carrier is many with the high-frequency work in tens kilo hertzs to the 200 kilo hertzs frequency ranges; The capacitive effect of electric equipment is serious, and carrier wave is difficult to transmission.Drawbacks such as prior art can only be eliminated general frequency interferences, still exists the signal error code serious, and transmission range is limited.And two mutual signals of the as easy as rolling off a log generation of carrier Control network disturb.
Summary of the invention
Be technical deficiency more than solving, the utility model provide a kind of reasonable in design, the knot hook is simple, the low voltage power line carrier isolator that can effectively isolate two carrier Control inter-network interference.
The utility model is realized through following measure:
A kind of low voltage power line carrier isolator of the utility model; Comprise the bus or the branch road on the zero line 1 and branch road 2 that are connected on single-phase low-voltage power line; Said branch road 1 is made up of inductance coil L1 that is in parallel and capacitor C1; Said branch road 2 is made up of inductance coil L2 that is in parallel and capacitor C2, is connected with filter capacitor C3 between the points of common connection of branch road 1 and branch road 2 series connection and the zero line of single-phase low-voltage power line or the bus.
Above-mentioned branch road 1 is connected on the zero line of three-phase low-voltage power line with branch road 2, and the points of common connection of branch road 1 and branch road 2 series connection is connected with filter capacitor C4, C5, C6 respectively mutually with each of three-phase low-voltage power line between the bus.
Above-mentioned filter capacitor adopts safety electric capacity.
The beneficial effect of the utility model is:
Simple in structure, cost is low, can effectively isolate signal mutual between two carrier Control networks and disturb, and is easy for installation.
Description of drawings
Fig. 1 is the circuit catenation principle figure in the single-phase low-voltage power line of the utility model.
Fig. 2 is the circuit catenation principle figure in the three-phase low-voltage power line of the utility model.
Embodiment
As shown in Figure 1; A kind of low voltage power line carrier isolator of the utility model; Comprise the bus or the branch road on the zero line 1 and branch road 2 that are connected on single-phase low-voltage power line; Branch road 1 is made up of inductance coil L1 that is in parallel and capacitor C1, and branch road 2 is made up of inductance coil L2 that is in parallel and capacitor C2, and branch road 1 is composed in series the high-frequency signal high impedance circuit with branch road 2.The high-frequency signal high impedance circuit can directly be connected in the power network line, has no influence for power frequency component.It mainly is to accomplish through connecing filter capacitor that high-frequency signal Low ESR filter circuit constitutes.Be connected filter capacitor C3 between the points of common connection of branch road 1 and branch road 2 series connection just and the zero line of single-phase low-voltage power line or the bus.
Branch road 1 is connected on the zero line of three-phase low-voltage power line with branch road 2, and the points of common connection of branch road 1 and branch road 2 series connection is connected with filter capacitor C4, C5, C6 respectively mutually with each of three-phase low-voltage power line between the bus.
In order to reduce requirement, the magnetic medium that the utility model uses the built-in suitable carrier frequency of inductance coil to inductance value and coil dimension.Filter capacitor is connected across between zero line and the live wire, so the withstand voltage index Bi Xu ≧ 630V (interchange) of filter capacitor; For High frequency filter effect is preferably arranged, capacity type should be selected category noninductive or that inductance is very little for use, is preferably safety electric capacity.The isolator of the utility model is installed on the contact of two carrier networks and on the contact of carrier network and other power utilization network.
Its operation principle is: the high-frequency signal high impedance circuit utilizes LC resonance to produce the high impedance principle; High-frequency signal Low ESR filter circuit utilizes filter capacitor when high-frequency signal, to present the Low ESR principle; Make the isolator both sides present high impedance to carrier wave; Can the carrier wave of both sides not impacted, and inside has filter circuit that carrier wave is presented Low ESR (High frequency filter), thereby the carrier signal (perhaps interference signal) that has guaranteed the isolator both sides can not be transferred to an other side.Avoid of the interference of the outer homogenous frequency signal of phase mutual interference and power line carrier network of carrier wave to carrier network.
The foregoing description is said to be in order to specify this patent; Though describe through specific term in the literary composition; But can not limit the protection range of this patent with this; The personage who is familiar with this technical field can change or revise it after the spirit of understanding this patent and principle and reach equivalent purpose, and this equivalence change and modification all should be covered by the claim scope and define in the category.
Claims (3)
1. low voltage power line carrier isolator; It is characterized in that: comprise the bus or the branch road on the zero line 1 and branch road 2 that are connected on single-phase low-voltage power line; Said branch road 1 is made up of inductance coil L1 that is in parallel and capacitor C1; Said branch road 2 is made up of inductance coil L2 that is in parallel and capacitor C2, is connected with filter capacitor C3 between the points of common connection of branch road 1 and branch road 2 series connection and the zero line of single-phase low-voltage power line or the bus.
2. according to the said low voltage power line carrier isolator of claim 1; It is characterized in that: said branch road 1 is connected on the zero line of three-phase low-voltage power line with branch road 2, and the points of common connection of branch road 1 and branch road 2 series connection is connected with filter capacitor C4, C5, C6 respectively mutually with each of three-phase low-voltage power line between the bus.
3. according to the said low voltage power line carrier isolator of claim 1, it is characterized in that: said filter capacitor adopts safety electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200654100U CN202424718U (en) | 2012-02-27 | 2012-02-27 | Low voltage power line carrier isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200654100U CN202424718U (en) | 2012-02-27 | 2012-02-27 | Low voltage power line carrier isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424718U true CN202424718U (en) | 2012-09-05 |
Family
ID=46749440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200654100U Expired - Lifetime CN202424718U (en) | 2012-02-27 | 2012-02-27 | Low voltage power line carrier isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424718U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183684A (en) * | 2016-12-08 | 2018-06-19 | 丰郅(上海)新能源科技有限公司 | The photovoltaic module monitoring system of integrated communicaton function |
| CN108183683A (en) * | 2016-12-08 | 2018-06-19 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module monitoring system with failure turn-off function |
| CN112787689A (en) * | 2021-01-27 | 2021-05-11 | 广东电网有限责任公司 | Power line carrier same-frequency noise blocker and power system |
-
2012
- 2012-02-27 CN CN2012200654100U patent/CN202424718U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183684A (en) * | 2016-12-08 | 2018-06-19 | 丰郅(上海)新能源科技有限公司 | The photovoltaic module monitoring system of integrated communicaton function |
| CN108183683A (en) * | 2016-12-08 | 2018-06-19 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module monitoring system with failure turn-off function |
| CN108183683B (en) * | 2016-12-08 | 2020-09-08 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module monitoring system with fault turn-off function |
| CN108183684B (en) * | 2016-12-08 | 2020-10-09 | 丰郅(上海)新能源科技有限公司 | Photovoltaic module monitoring system integrating communication function |
| CN112787689A (en) * | 2021-01-27 | 2021-05-11 | 广东电网有限责任公司 | Power line carrier same-frequency noise blocker and power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-voltage power line wave-carried isolator Effective date of registration: 20141226 Granted publication date: 20120905 Pledgee: Qilu bank Limited by Share Ltd Ji'nan East Branch Pledgor: Shandong Lingbao Electric Co., Ltd. Registration number: 2014370000057 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |