CN201853795U - Panel antenna for passive and wireless temperature measurement of bus compartment of high-voltage switchgear - Google Patents
Panel antenna for passive and wireless temperature measurement of bus compartment of high-voltage switchgear Download PDFInfo
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- CN201853795U CN201853795U CN2010205800994U CN201020580099U CN201853795U CN 201853795 U CN201853795 U CN 201853795U CN 2010205800994 U CN2010205800994 U CN 2010205800994U CN 201020580099 U CN201020580099 U CN 201020580099U CN 201853795 U CN201853795 U CN 201853795U
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- metal base
- voltage switchgear
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Abstract
The utility model belongs to the technical field of high-voltage switchgear monitoring, and relates to a panel antenna for passive and wireless temperature measurement of a bus compartment of a high-voltage switchgear. The panel antenna comprises an antenna and a base, wherein the antenna is used for transmitting signals of a surface acoustic wave temperature sensor arranged on the surface of a trunk; the base is a metal base; the antenna and the base are rectangular; the area of the metal base is larger than that of the antenna; the rectangular antenna is insulated from the metal base; one end of the antenna is fixed on the metal base, and the other end of the antenna is supported on the metal base through a bracket; and the antenna can be kept to stably operate in the desired resonance frequency while keeping an enough small space between the rectangular antenna and the metal base. The panel antenna has good directionality, is easy to satisfy the requirement for electric safety distance, and can greatly reduce the installation height.
Description
Technical field
The utility model belongs to the high voltage switchgear monitoring technical field, is specifically related to a kind of bus-bar room temperature measuring equipment.
Background technology
That intelligent grid is based upon is integrated, at a high speed, on the basis of bidirectional communication network, sensing by the advanced person and measuring technique, advanced equipment and technology and advanced control method etc. realize safety, the reliability service of electrical network.
In transformer station, the thermal effect that the conductor joule loss of power equipment, ferromagnetic loss, dielectric loss, harmonic loss etc. cause can cause the conductor material deterioration, increase anomaly and catastrophic failures such as electric energy loss even initiation fire, causes enormous economic loss and security incident.Therefore, the real time temperature of power equipment being carried out close on-line monitoring, is the indispensable means that ensure electric power system and equipment reliability service.The development of modern technologies such as sensor technology, Antenna Design technology, signal processing technology, feasible real time temperature to each device node of transformer station carries out on-line monitoring becomes possibility, and the safe operation that guarantees substation equipment, reliability and the automaticity that improves electrical network are had great importance.
Wireless temperature measurement sensing technology major function is that the temperature of target device is implemented online monitoring and warning, but the temperature of on-the-spot each the high-low pressure key node of real time automatic detection, early warning high and low voltage electric distribution station and user engineering such as capacitor, reactor etc., unusual condition is carried out early warning in advance, and by background computer realization unattended operation and remote monitoring, reduce the workload of field apparatus inspection significantly, guarantee personal security, improved reliability, the fail safe of electric equipment operation.
In general wireless temperature measurement scheme, what the signal transmitting and receiving antenna of signal read-write end generally adopted is both arms spiral dipole antenna, and this antenna belongs to omni-directional antenna.In high voltage switchgear, if will carry out online monitoring temperature to different cabinets chambers such as bus-bar room, cable vaults simultaneously, when using this both arms spiral dipole antenna thermometric, will certainly there be signal cross-talk in different cabinets between the chamber.In addition, because this both arms spiral dipole antenna oneself height is than higher, the requirement that this antenna can not satisfy the electrical safety distance is installed in the narrow and small bus-bar room in space under the hyperbaric environment, will certainly causes a series of problems because radial distance between antenna and SAW (surface acoustic wave) temperature sensor is too little.To sum up to the consideration of antenna directivity and self size, the both arms spiral dipole antenna that adopts in the existing wireless temperature measurement system has not been suitable for the passive and wireless thermometric scene of high voltage switchgear bus-bar room.
The utility model content
The utility model is at above-mentioned the deficiencies in the prior art, provide a kind of directionality better, self size is less, especially can reduce the antenna of setting height(from bottom) greatly.The technical solution of the utility model is as follows:
A kind of high voltage switchgear bus-bar room passive and wireless thermometric plate aerial that is used for, comprise antenna and base, antenna is used to transmit the signal of the surface acoustic wave temperature sensor that is arranged on the busbar surface, base is a metab, described antenna and metab are strip, and the area of metab is greater than the area of antenna; Strip antenna and metab insulation, the one end is fixed on the metab, on metab, the interval between strip antenna and the metab is operated in desired resonance frequency place to the other end with can also guaranteeing antenna stabilization in enough little by stent support.
The signal that plate aerial is used for signal read-write end receives and sends.This plate aerial and temp measuring system utility model that is used for high voltage switchgear bus-bar room passive and wireless thermometric has following advantage:
1. adopt a kind of signal transmitting and receiving antenna with direction-sense preferably plate aerial as signal read-write end, replaced isotropic both arms spiral dipole antenna in the past, solved in the high voltage switchgear, bus-bar room and cable vault etc. are closely adjacent, simultaneously the problem that exists signal to disturb each other during on-line temperature monitoring;
2. in actual applications, this plate aerial is encapsulated in the special plastic casing, and this plastic casing does not influence even strengthen the service behaviour of antenna.Place, the slit of plastic casing can adopt silica gel etc. to carry out water-proofing treatment.
3. by improving design, plate aerial self size is little, and is especially highly little, be card-like, control electrical safety distance when being convenient under hyperbaric environment, install, it is narrow and small to have overcome high voltage switchgear bus-bar room space, is not suitable for the difficulty of the higher both arms spiral dipole antenna of setting height(from bottom);
4. the plate aerial gain that improves and adopt higher (〉=3dB), standing-wave ratio less (≤2), cost is low, manufacture craft is simple, good stability.
Description of drawings
Accompanying drawing 1 is the utility model flat plate antenna structure front view;
The novel flat-plate antenna structure vertical view that the improvement that accompanying drawing 2 is introduced for the utility model designs.
Description of drawings is as follows:
1 antenna, 2 bases, 3 signal read write line joints, 4 coaxial shielding cables
Embodiment
The utility model is plate aerial and the thermometric network thereof that is used for high voltage switchgear bus-bar room temp measuring system, adopted a kind of directionality preferably plate aerial replaced isotropic both arms spiral dipole antenna, its internal structure is faced as shown in Figure 1, overlooks as shown in Figure 2.Plate aerial of the present utility model comprises an antenna 1 and a metab 2, and is all elongated.One end of strip antenna is bent into a 90, and bending part length becomes the pin shape to link to each other with metab 2 by the height decision of antenna 1 apart from metab 2; The other end links to each other with metal base plate 2 with an insulating support, support strip antenna 1, and the spatiality of maintenance antenna 1 reaches the distance with metal base plate 2, to guarantee the resonance frequency place of plate aerial energy steady operation at engine request; The size of metab 2 is a bit larger tham the size of strip antenna 1, plays the effect of reflecting wall.
Above-mentioned plate aerial is installed in the bus-bar room on the locular wall with busbar and SAW temperature sensor apart from each other, when for example being installed in the bottom, the radiation areas of plate aerial are in antenna top and cover all and be close to SAW temperature sensor on the busbar, simultaneously because plate aerial has certain directivity, can avoid receiving signal that cable vault's SAW temperature sensor of bus-bar room below returns and cause and crosstalk; The SAW temperature sensor is close to the busbar joint.Carry out radio communication between plate aerial and SAW temperature sensor, obtain radiofrequency signal.Signal transmitting and receiving is held the plate antenna level with both hands and by the coaxial radio-frequency shielded type cable radiofrequency signal is sent to the outer signal read write line of bus-bar room, signal read write line received RF signal is also handled signal, obtain temperature signal, by data output interface temperature signal is sent to background monitoring system then, realizes the situation of change of remote monitoring high voltage switchgear bus-bar room scene temperature by background monitoring system.
The utility model can have many group signal read-write equipments, the corresponding at least wireless and passive temp probe of the plate aerial of each read write line end.Background monitoring system, signal read write line, transmitting-receiving plate aerial, SAW temperature sensor are formed high voltage switchgear bus-bar room passive and wireless thermometric network jointly.Signal read write line emitting radio frequency signal is given the SAW temperature sensor, the SAW temp probe will have the radio frequency signal feedback of temperature information and give the signal read write line, after the signal read write line is handled signal, be sent to described background monitoring system by certain communication mode, easily realize unattended operation and remote monitoring by background computer.
Claims (1)
1. one kind is used for high voltage switchgear bus-bar room passive and wireless thermometric plate aerial, comprise antenna and base, described antenna is used to transmit the signal of the surface acoustic wave temperature sensor that is arranged on the busbar surface, it is characterized in that, described base is a metab, described antenna and metab are strip, and the area of metab is greater than the area of antenna; Strip antenna and metab insulation, the one end is fixed on the metab, on metab, the interval between strip antenna and the metab is operated in desired resonance frequency place to the other end with can also guaranteeing antenna stabilization in enough little by stent support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205800994U CN201853795U (en) | 2010-10-27 | 2010-10-27 | Panel antenna for passive and wireless temperature measurement of bus compartment of high-voltage switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205800994U CN201853795U (en) | 2010-10-27 | 2010-10-27 | Panel antenna for passive and wireless temperature measurement of bus compartment of high-voltage switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201853795U true CN201853795U (en) | 2011-06-01 |
Family
ID=44096178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205800994U Expired - Fee Related CN201853795U (en) | 2010-10-27 | 2010-10-27 | Panel antenna for passive and wireless temperature measurement of bus compartment of high-voltage switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201853795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886353A (en) * | 2016-04-11 | 2018-11-23 | 株式会社村田制作所 | Elastic wave device and acoustic wave device |
-
2010
- 2010-10-27 CN CN2010205800994U patent/CN201853795U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886353A (en) * | 2016-04-11 | 2018-11-23 | 株式会社村田制作所 | Elastic wave device and acoustic wave device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20181027 |